bitkeeper revision 1.1665.1.5 (42a1a779yqLZDCutMj_vFNQlo3q3zw)

Rationalise debugger stuff in the tree.

Within Xen itself, remove PDB references and fold into domu_debug.
When domu_debug hits a breakpoint, it pauses all vcpus of the domain
and raises VIRQ_DEBUGGER (not VIRQ_PDB). The debugger in domain0 can
either poll pause status or bind to VIRQ_DEBUGGER. Before debugging
a breakpointed domain the debugger should issue PAUSEDOMAIN itself, or
it is not guaranteed to see paused state of the domain!

Outside Xen there's a new dir tools/debugger, containing gdb, pdb and
a new library libxendebug (used by pdb). I also think the ptrace
functions in libxc also ought to be moved out: either to libxendebug
or to a new library libxenptrace.

Signed-off-by: Keir Fraser <keir@xensource.com>

27 files changed, 10596 insertions, 0 deletions

diff --git a/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/Makefile.in b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/Makefile.in
new file mode 100644
index 0000000000..e470217934
--- /dev/null
+++ b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/Makefile.in
@@ -0,0 +1,308 @@
+# Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+# 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+# This file is part of GDB.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+host_alias = @host_alias@
+target_alias = @target_alias@
+program_transform_name = @program_transform_name@
+bindir = @bindir@
+libdir = @libdir@
+tooldir = $(libdir)/$(target_alias)
+
+datadir = @datadir@
+mandir = @mandir@
+man1dir = $(mandir)/man1
+man2dir = $(mandir)/man2
+man3dir = $(mandir)/man3
+man4dir = $(mandir)/man4
+man5dir = $(mandir)/man5
+man6dir = $(mandir)/man6
+man7dir = $(mandir)/man7
+man8dir = $(mandir)/man8
+man9dir = $(mandir)/man9
+infodir = @infodir@
+htmldir = $(prefix)/html
+includedir = @includedir@
+
+SHELL = /bin/sh
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+
+CC = @CC@
+
+# Directory containing source files.  Don't clean up the spacing,
+# this exact string is matched for by the "configure" script.
+srcdir = @srcdir@
+VPATH = @srcdir@
+
+# It is also possible that you will need to add -I/usr/include/sys to the
+# CFLAGS section if your system doesn't have fcntl.h in /usr/include (which 
+# is where it should be according to Posix).
+
+# Set this up with gcc if you have gnu ld and the loader will print out
+# line numbers for undefinded refs.
+#CC-LD=gcc -static
+CC-LD=${CC}
+
+# Where is the "include" directory?  Traditionally ../include or ./include
+INCLUDE_DIR =  ${srcdir}/../../include
+INCLUDE_DEP = $$(INCLUDE_DIR)
+
+# Where are the BFD library?
+BFD_DIR = ../../bfd
+BFD = $(BFD_DIR)/libbfd.a
+BFD_SRC = $(srcdir)/$(BFD_DIR)
+BFD_CFLAGS = -I$(BFD_DIR) -I$(BFD_SRC)
+
+# Where is the source dir for the READLINE library?  Traditionally in .. or .
+# (For the binary library built from it, we use ${READLINE_DIR}${subdir}.)
+READLINE_DIR = ${srcdir}/../readline
+READLINE_DEP = $$(READLINE_DIR)
+
+# All the includes used for CFLAGS and for lint.
+# -I. for config files.
+# -I${srcdir} for our headers.
+# -I$(srcdir)/../regformats for regdef.h.
+INCLUDE_CFLAGS = -I. -I${srcdir} -I$(srcdir)/../regformats -I$(INCLUDE_DIR)  -I../../../../../libxc/
+
+# M{H,T}_CFLAGS, if defined, has host- and target-dependent CFLAGS
+# from the config/ directory.
+GLOBAL_CFLAGS = ${MT_CFLAGS} ${MH_CFLAGS}
+#PROFILE_CFLAGS = -pg
+
+WARN_CFLAGS = -Wall
+
+# CFLAGS is specifically reserved for setting from the command line
+# when running make.  I.E.  "make CFLAGS=-Wmissing-prototypes".
+CFLAGS = @CFLAGS@
+
+# INTERNAL_CFLAGS is the aggregate of all other *CFLAGS macros.
+INTERNAL_CFLAGS =  $(WARN_CFLAGS) ${CFLAGS} ${GLOBAL_CFLAGS} \
+	${PROFILE_CFLAGS} ${INCLUDE_CFLAGS} ${BFD_CFLAGS}
+
+# LDFLAGS is specifically reserved for setting from the command line
+# when running make.
+LDFLAGS = @LDFLAGS@
+
+# Perhaps should come from parent Makefile
+VERSION = gdbserver-4.12.3
+DIST=gdb
+
+LINT=/usr/5bin/lint
+LINTFLAGS= $(BFD_CFLAGS)
+
+# All source files that go into linking GDB remote server.
+
+SFILES=	$(srcdir)/gdbreplay.c $(srcdir)/inferiors.c \
+	$(srcdir)/mem-break.c $(srcdir)/proc-service.c $(srcdir)/regcache.c \
+	$(srcdir)/remote-utils.c $(srcdir)/server.c $(srcdir)/target.c \
+	$(srcdir)/thread-db.c $(srcdir)/utils.c \
+	$(srcdir)/linux-arm-low.c $(srcdir)/linux-i386-low.c \
+	$(srcdir)/i387-fp.c \
+	$(srcdir)/linux-ia64-low.c $(srcdir)/linux-low.c \
+	$(srcdir)/linux-m68k-low.c $(srcdir)/linux-mips-low.c \
+	$(srcdir)/linux-ppc-low.c $(srcdir)/linux-s390-low.c \
+	$(srcdir)/linux-sh-low.c $(srcdir)/linux-x86-64-low.c
+
+DEPFILES = @GDBSERVER_DEPFILES@
+
+SOURCES = $(SFILES)
+TAGFILES = $(SOURCES) ${HFILES} ${ALLPARAM} ${POSSLIBS} 
+
+OBS = inferiors.o regcache.o remote-utils.o server.o signals.o target.o \
+	utils.o \
+	mem-break.o \
+	$(DEPFILES)
+GDBSERVER_LIBS = @GDBSERVER_LIBS@
+
+# Prevent Sun make from putting in the machine type.  Setting
+# TARGET_ARCH to nothing works for SunOS 3, 4.0, but not for 4.1.
+.c.o:
+	${CC} -c ${INTERNAL_CFLAGS} $<
+
+all: gdbserver-xen gdbreplay
+
+# Traditionally "install" depends on "all".  But it may be useful
+# not to; for example, if the user has made some trivial change to a 
+# source file and doesn't care about rebuilding or just wants to save the
+# time it takes for make to check that all is up to date.
+# install-only is intended to address that need.
+install: all install-only
+install-only: 
+	n=`echo gdbserver-xen | sed '$(program_transform_name)'`; \
+	if [ x$$n = x ]; then n=gdbserver-xen; else true; fi; \
+	$(SHELL) $(srcdir)/../../mkinstalldirs $(DESTDIR)$(bindir); \
+	$(INSTALL_PROGRAM) gdbserver-xen $(DESTDIR)$(bindir)/$$n; \
+	$(SHELL) $(srcdir)/../../mkinstalldirs $(DESTDIR)$(man1dir); \
+	$(INSTALL_DATA) $(srcdir)/gdbserver.1 $(DESTDIR)$(man1dir)/$$n.1
+
+uninstall: force
+	n=`echo gdbserver-xen | sed '$(program_transform_name)'`; \
+	if [ x$$n = x ]; then n=gdbserver-xen; else true; fi; \
+	rm -f $(bindir)/$$n $(DESTDIR)$(man1dir)/$$n.1
+
+installcheck:
+check:
+info dvi:
+install-info:
+html:
+install-html:
+clean-info:
+
+gdbserver-xen: $(OBS) ${ADD_DEPS} ${CDEPS}
+	rm -f gdbserver-xen
+	${CC-LD} $(GLOBAL_CFLAGS) $(LDFLAGS) -o gdbserver-xen $(OBS) \
+	  $(GDBSERVER_LIBS) $(XM_CLIBS)
+
+gdbreplay: gdbreplay.o
+	rm -f gdbreplay
+	${CC-LD} $(GLOBAL_CFLAGS) $(LDFLAGS) -o gdbreplay gdbreplay.o \
+	  $(XM_CLIBS)
+
+# Put the proper machine-specific files first, so M-. on a machine
+# specific routine gets the one for the correct machine.
+# The xyzzy stuff below deals with empty DEPFILES
+TAGS:	${TAGFILES}
+	etags `find ${srcdir}/../config -name $(TM_FILE) -print` \
+	  `find ${srcdir}/../config -name ${XM_FILE} -print` \
+	  `find ${srcdir}/../config -name ${NAT_FILE} -print` \
+	  `for i in yzzy ${DEPFILES}; do \
+	     if [ x$$i != xyzzy ]; then \
+	       echo ${srcdir}/$$i | sed -e 's/\.o$$/\.c/' ; \
+	     fi; \
+	   done` \
+	  ${TAGFILES}
+tags: TAGS
+
+clean:
+	rm -f *.o ${ADD_FILES} *~
+	rm -f gdbserver gdbreplay core make.log
+	rm -f reg-arm.c reg-i386.c reg-ia64.c reg-m68k.c reg-mips.c
+	rm -f reg-ppc.c reg-sh.c reg-x86-64.c reg-i386-linux.c
+
+maintainer-clean realclean distclean: clean
+	rm -f nm.h tm.h xm.h config.status config.h stamp-h config.log
+	rm -f Makefile
+
+STAGESTUFF=${OBS} ${TSOBS} ${NTSOBS} ${ADD_FILES} init.c init.o version.c gdb
+
+config.h: stamp-h ; @true
+stamp-h: config.in config.status
+	CONFIG_FILES="" $(SHELL) ./config.status
+
+Makefile: Makefile.in config.status
+	CONFIG_HEADERS="" $(SHELL) ./config.status
+
+config.status: configure configure.srv
+	$(SHELL) ./config.status --recheck
+
+force:
+
+version.c: Makefile
+	echo 'char *version = "$(VERSION)";' >version.c
+
+# GNU Make has an annoying habit of putting *all* the Makefile variables
+# into the environment, unless you include this target as a circumvention.
+# Rumor is that this will be fixed (and this target can be removed)
+# in GNU Make 4.0.
+.NOEXPORT:
+
+# GNU Make 3.63 has a different problem: it keeps tacking command line
+# overrides onto the definition of $(MAKE).  This variable setting
+# will remove them.
+MAKEOVERRIDES=
+
+gdb_proc_service_h = $(srcdir)/../gdb_proc_service.h $(srcdir)/../gregset.h
+regdat_sh = $(srcdir)/../regformats/regdat.sh
+regdef_h = $(srcdir)/../regformats/regdef.h
+regcache_h = $(srcdir)/regcache.h
+server_h = $(srcdir)/server.h $(regcache_h) config.h $(srcdir)/target.h \
+		$(srcdir)/mem-break.h
+
+inferiors.o: inferiors.c $(server_h)
+mem-break.o: mem-break.c $(server_h)
+proc-service.o: proc-service.c $(server_h) $(gdb_proc_service_h)
+regcache.o: regcache.c $(server_h) $(regdef_h)
+remote-utils.o: remote-utils.c terminal.h $(server_h)
+server.o: server.c $(server_h)
+target.o: target.c $(server_h)
+thread-db.o: thread-db.c $(server_h) $(gdb_proc_service_h)
+utils.o: utils.c $(server_h)
+
+signals.o: ../signals/signals.c $(server_h)
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< -DGDBSERVER
+
+i387-fp.o: i387-fp.c $(server_h)
+
+linux_low_h = $(srcdir)/linux-low.h
+
+linux-low.o: linux-low.c $(linux_low_h) $(server_h)
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< @USE_THREAD_DB@
+
+linux-xen-low.o: linux-xen-low.c $(linux_low_h) $(server_h)
+	$(CC) -c $(CPPFLAGS) $(INTERNAL_CFLAGS) $< @USE_THREAD_DB@
+
+linux-arm-low.o: linux-arm-low.c $(linux_low_h) $(server_h)
+linux-i386-low.o: linux-i386-low.c $(linux_low_h) $(server_h)
+linux-ia64-low.o: linux-ia64-low.c $(linux_low_h) $(server_h)
+linux-mips-low.o: linux-mips-low.c $(linux_low_h) $(server_h)
+linux-ppc-low.o: linux-ppc-low.c $(linux_low_h) $(server_h)
+linux-s390-low.o: linux-s390-low.c $(linux_low_h) $(server_h)
+linux-sh-low.o: linux-sh-low.c $(linux_low_h) $(server_h)
+linux-x86-64-low.o: linux-x86-64-low.c $(linux_low_h) $(server_h)
+
+reg-arm.o : reg-arm.c $(regdef_h)
+reg-arm.c : $(srcdir)/../regformats/reg-arm.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-arm.dat reg-arm.c
+reg-i386.o : reg-i386.c $(regdef_h)
+reg-i386.c : $(srcdir)/../regformats/reg-i386.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-i386.dat reg-i386.c
+reg-i386-linux.o : reg-i386-linux.c $(regdef_h)
+reg-i386-linux.c : $(srcdir)/../regformats/reg-i386-linux.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-i386-linux.dat reg-i386-linux.c
+reg-ia64.o : reg-ia64.c $(regdef_h)
+reg-ia64.c : $(srcdir)/../regformats/reg-ia64.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-ia64.dat reg-ia64.c
+reg-m68k.o : reg-m68k.c $(regdef_h)
+reg-m68k.c : $(srcdir)/../regformats/reg-m68k.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-m68k.dat reg-m68k.c
+reg-mips.o : reg-mips.c $(regdef_h)
+reg-mips.c : $(srcdir)/../regformats/reg-mips.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-mips.dat reg-mips.c
+reg-ppc.o : reg-ppc.c $(regdef_h)
+reg-ppc.c : $(srcdir)/../regformats/reg-ppc.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-ppc.dat reg-ppc.c
+reg-s390.o : reg-s390.c $(regdef_h)
+reg-s390.c : $(srcdir)/../regformats/reg-s390.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-s390.dat reg-s390.c
+reg-s390x.o : reg-s390x.c $(regdef_h)
+reg-s390x.c : $(srcdir)/../regformats/reg-s390x.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-s390x.dat reg-s390x.c
+reg-sh.o : reg-sh.c $(regdef_h)
+reg-sh.c : $(srcdir)/../regformats/reg-sh.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-sh.dat reg-sh.c
+reg-x86-64.o : reg-x86-64.c $(regdef_h)
+reg-x86-64.c : $(srcdir)/../regformats/reg-x86-64.dat $(regdat_sh)
+	sh $(regdat_sh) $(srcdir)/../regformats/reg-x86-64.dat reg-x86-64.c
+
+# This is the end of "Makefile.in".
diff --git a/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure
new file mode 100755
index 0000000000..3cb8c841bd
--- /dev/null
+++ b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure
@@ -0,0 +1,4650 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.57.
+#
+# Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
+# Free Software Foundation, Inc.
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+
+# Support unset when possible.
+if (FOO=FOO; unset FOO) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -n "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="sed y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="sed y%*+%pp%;s%[^_$as_cr_alnum]%_%g"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+
+# Name of the host.
+# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+exec 6>&1
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_config_libobj_dir=.
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+# Maximum number of lines to put in a shell here document.
+# This variable seems obsolete.  It should probably be removed, and
+# only ac_max_sed_lines should be used.
+: ${ac_max_here_lines=38}
+
+# Identity of this package.
+PACKAGE_NAME=
+PACKAGE_TARNAME=
+PACKAGE_VERSION=
+PACKAGE_STRING=
+PACKAGE_BUGREPORT=
+
+ac_unique_file="server.c"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# if HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#if HAVE_STRING_H
+# if !STDC_HEADERS && HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#if HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#else
+# if HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CPP EGREP GDBSERVER_DEPFILES GDBSERVER_LIBS USE_THREAD_DB LIBOBJS LTLIBOBJS'
+ac_subst_files=''
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+ac_prev=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval "$ac_prev=\$ac_option"
+    ac_prev=
+    continue
+  fi
+
+  ac_optarg=`expr "x$ac_option" : 'x[^=]*=\(.*\)'`
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_option in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    eval "enable_$ac_feature=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_$ac_feature='$ac_optarg'" ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_package=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_$ac_package='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package | sed 's/-/_/g'`
+    eval "with_$ac_package=no" ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) { echo "$as_me: error: unrecognized option: $ac_option
+Try \`$0 --help' for more information." >&2
+   { (exit 1); exit 1; }; }
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid variable name: $ac_envvar" >&2
+   { (exit 1); exit 1; }; }
+    ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`
+    eval "$ac_envvar='$ac_optarg'"
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  { echo "$as_me: error: missing argument to $ac_option" >&2
+   { (exit 1); exit 1; }; }
+fi
+
+# Be sure to have absolute paths.
+for ac_var in exec_prefix prefix
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* | NONE | '' ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# Be sure to have absolute paths.
+for ac_var in bindir sbindir libexecdir datadir sysconfdir sharedstatedir \
+              localstatedir libdir includedir oldincludedir infodir mandir
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+    echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used." >&2
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_confdir=`(dirname "$0") 2>/dev/null ||
+$as_expr X"$0" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+         X"$0" : 'X\(//\)[^/]' \| \
+         X"$0" : 'X\(//\)$' \| \
+         X"$0" : 'X\(/\)' \| \
+         .     : '\(.\)' 2>/dev/null ||
+echo X"$0" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r $srcdir/$ac_unique_file; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+  if test "$ac_srcdir_defaulted" = yes; then
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $ac_confdir or .." >&2
+   { (exit 1); exit 1; }; }
+  else
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $srcdir" >&2
+   { (exit 1); exit 1; }; }
+  fi
+fi
+(cd $srcdir && test -r ./$ac_unique_file) 2>/dev/null ||
+  { echo "$as_me: error: sources are in $srcdir, but \`cd $srcdir' does not work" >&2
+   { (exit 1); exit 1; }; }
+srcdir=`echo "$srcdir" | sed 's%\([^\\/]\)[\\/]*$%\1%'`
+ac_env_build_alias_set=${build_alias+set}
+ac_env_build_alias_value=$build_alias
+ac_cv_env_build_alias_set=${build_alias+set}
+ac_cv_env_build_alias_value=$build_alias
+ac_env_host_alias_set=${host_alias+set}
+ac_env_host_alias_value=$host_alias
+ac_cv_env_host_alias_set=${host_alias+set}
+ac_cv_env_host_alias_value=$host_alias
+ac_env_target_alias_set=${target_alias+set}
+ac_env_target_alias_value=$target_alias
+ac_cv_env_target_alias_set=${target_alias+set}
+ac_cv_env_target_alias_value=$target_alias
+ac_env_CC_set=${CC+set}
+ac_env_CC_value=$CC
+ac_cv_env_CC_set=${CC+set}
+ac_cv_env_CC_value=$CC
+ac_env_CFLAGS_set=${CFLAGS+set}
+ac_env_CFLAGS_value=$CFLAGS
+ac_cv_env_CFLAGS_set=${CFLAGS+set}
+ac_cv_env_CFLAGS_value=$CFLAGS
+ac_env_LDFLAGS_set=${LDFLAGS+set}
+ac_env_LDFLAGS_value=$LDFLAGS
+ac_cv_env_LDFLAGS_set=${LDFLAGS+set}
+ac_cv_env_LDFLAGS_value=$LDFLAGS
+ac_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_env_CPPFLAGS_value=$CPPFLAGS
+ac_cv_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_cv_env_CPPFLAGS_value=$CPPFLAGS
+ac_env_CPP_set=${CPP+set}
+ac_env_CPP_value=$CPP
+ac_cv_env_CPP_set=${CPP+set}
+ac_cv_env_CPP_value=$CPP
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures this package to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+_ACEOF
+
+  cat <<_ACEOF
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR           user executables [EPREFIX/bin]
+  --sbindir=DIR          system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR       program executables [EPREFIX/libexec]
+  --datadir=DIR          read-only architecture-independent data [PREFIX/share]
+  --sysconfdir=DIR       read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR   modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR    modifiable single-machine data [PREFIX/var]
+  --libdir=DIR           object code libraries [EPREFIX/lib]
+  --includedir=DIR       C header files [PREFIX/include]
+  --oldincludedir=DIR    C header files for non-gcc [/usr/include]
+  --infodir=DIR          info documentation [PREFIX/info]
+  --mandir=DIR           man documentation [PREFIX/man]
+_ACEOF
+
+  cat <<\_ACEOF
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+  --target=TARGET   configure for building compilers for TARGET [HOST]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+
+  cat <<\_ACEOF
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
+              headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+_ACEOF
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  ac_popdir=`pwd`
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d $ac_dir || continue
+    ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
+# absolute.
+ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
+ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
+ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
+
+    cd $ac_dir
+    # Check for guested configure; otherwise get Cygnus style configure.
+    if test -f $ac_srcdir/configure.gnu; then
+      echo
+      $SHELL $ac_srcdir/configure.gnu  --help=recursive
+    elif test -f $ac_srcdir/configure; then
+      echo
+      $SHELL $ac_srcdir/configure  --help=recursive
+    elif test -f $ac_srcdir/configure.ac ||
+           test -f $ac_srcdir/configure.in; then
+      echo
+      $ac_configure --help
+    else
+      echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi
+    cd $ac_popdir
+  done
+fi
+
+test -n "$ac_init_help" && exit 0
+if $ac_init_version; then
+  cat <<\_ACEOF
+
+Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
+Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit 0
+fi
+exec 5>config.log
+cat >&5 <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by $as_me, which was
+generated by GNU Autoconf 2.57.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+hostinfo               = `(hostinfo) 2>/dev/null               || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  echo "PATH: $as_dir"
+done
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_sep=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) ac_configure_args0="$ac_configure_args0 '$ac_arg'" ;;
+    2)
+      ac_configure_args1="$ac_configure_args1 '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+        ac_must_keep_next=false # Got value, back to normal.
+      else
+        case $ac_arg in
+          *=* | --config-cache | -C | -disable-* | --disable-* \
+          | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+          | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+          | -with-* | --with-* | -without-* | --without-* | --x)
+            case "$ac_configure_args0 " in
+              "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+            esac
+            ;;
+          -* ) ac_must_keep_next=true ;;
+        esac
+      fi
+      ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
+      # Get rid of the leading space.
+      ac_sep=" "
+      ;;
+    esac
+  done
+done
+$as_unset ac_configure_args0 || test "${ac_configure_args0+set}" != set || { ac_configure_args0=; export ac_configure_args0; }
+$as_unset ac_configure_args1 || test "${ac_configure_args1+set}" != set || { ac_configure_args1=; export ac_configure_args1; }
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Be sure not to use single quotes in there, as some shells,
+# such as our DU 5.0 friend, will then `close' the trap.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+{
+  (set) 2>&1 |
+    case `(ac_space='"'"' '"'"'; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      sed -n \
+        "s/'"'"'/'"'"'\\\\'"'"''"'"'/g;
+    	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='"'"'\\2'"'"'/p"
+      ;;
+    *)
+      sed -n \
+        "s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+}
+    echo
+
+    cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=$`echo $ac_var`
+      echo "$ac_var='"'"'$ac_val'"'"'"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      cat <<\_ASBOX
+## ------------- ##
+## Output files. ##
+## ------------- ##
+_ASBOX
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=$`echo $ac_var`
+        echo "$ac_var='"'"'$ac_val'"'"'"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+      echo
+      sed "/^$/d" confdefs.h | sort
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      echo "$as_me: caught signal $ac_signal"
+    echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core core.* *.core &&
+  rm -rf conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+     ' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; { (exit 1); exit 1; }' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo >confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    { echo "$as_me:$LINENO: loading site script $ac_site_file" >&5
+echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special
+  # files actually), so we avoid doing that.
+  if test -f "$cache_file"; then
+    { echo "$as_me:$LINENO: loading cache $cache_file" >&5
+echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . $cache_file;;
+      *)                      . ./$cache_file;;
+    esac
+  fi
+else
+  { echo "$as_me:$LINENO: creating cache $cache_file" >&5
+echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in `(set) 2>&1 |
+               sed -n 's/^ac_env_\([a-zA-Z_0-9]*\)_set=.*/\1/p'`; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val="\$ac_cv_env_${ac_var}_value"
+  eval ac_new_val="\$ac_env_${ac_var}_value"
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was not set in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+        { echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5
+echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+        { echo "$as_me:$LINENO:   former value:  $ac_old_val" >&5
+echo "$as_me:   former value:  $ac_old_val" >&2;}
+        { echo "$as_me:$LINENO:   current value: $ac_new_val" >&5
+echo "$as_me:   current value: $ac_new_val" >&2;}
+        ac_cache_corrupted=:
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { echo "$as_me:$LINENO: error: changes in the environment can compromise the build" >&5
+echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5
+echo "$as_me: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+          ac_config_headers="$ac_config_headers config.h:config.in"
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$ac_ct_CC" && break
+done
+
+  CC=$ac_ct_CC
+fi
+
+fi
+
+
+test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&5
+echo "$as_me: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+
+# Provide some information about the compiler.
+echo "$as_me:$LINENO:" \
+     "checking for C compiler version" >&5
+ac_compiler=`set X $ac_compile; echo $2`
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
+  (eval $ac_compiler --version </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -v </dev/null >&5\"") >&5
+  (eval $ac_compiler -v </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -V </dev/null >&5\"") >&5
+  (eval $ac_compiler -V </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+echo "$as_me:$LINENO: checking for C compiler default output" >&5
+echo $ECHO_N "checking for C compiler default output... $ECHO_C" >&6
+ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5
+  (eval $ac_link_default) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # Find the output, starting from the most likely.  This scheme is
+# not robust to junk in `.', hence go to wildcards (a.*) only as a last
+# resort.
+
+# Be careful to initialize this variable, since it used to be cached.
+# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile.
+ac_cv_exeext=
+# b.out is created by i960 compilers.
+for ac_file in a_out.exe a.exe conftest.exe a.out conftest a.* conftest.* b.out
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj )
+        ;;
+    conftest.$ac_ext )
+        # This is the source file.
+        ;;
+    [ab].out )
+        # We found the default executable, but exeext='' is most
+        # certainly right.
+        break;;
+    *.* )
+        ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+        # FIXME: I believe we export ac_cv_exeext for Libtool,
+        # but it would be cool to find out if it's true.  Does anybody
+        # maintain Libtool? --akim.
+        export ac_cv_exeext
+        break;;
+    * )
+        break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: C compiler cannot create executables
+See \`config.log' for more details." >&5
+echo "$as_me: error: C compiler cannot create executables
+See \`config.log' for more details." >&2;}
+   { (exit 77); exit 77; }; }
+fi
+
+ac_exeext=$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_file" >&5
+echo "${ECHO_T}$ac_file" >&6
+
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether the C compiler works" >&5
+echo $ECHO_N "checking whether the C compiler works... $ECHO_C" >&6
+# FIXME: These cross compiler hacks should be removed for Autoconf 3.0
+# If not cross compiling, check that we can run a simple program.
+if test "$cross_compiling" != yes; then
+  if { ac_try='./$ac_file'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { echo "$as_me:$LINENO: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+    fi
+  fi
+fi
+echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+
+rm -f a.out a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether we are cross compiling" >&5
+echo $ECHO_N "checking whether we are cross compiling... $ECHO_C" >&6
+echo "$as_me:$LINENO: result: $cross_compiling" >&5
+echo "${ECHO_T}$cross_compiling" >&6
+
+echo "$as_me:$LINENO: checking for suffix of executables" >&5
+echo $ECHO_N "checking for suffix of executables... $ECHO_C" >&6
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+          export ac_cv_exeext
+          break;;
+    * ) break;;
+  esac
+done
+else
+  { { echo "$as_me:$LINENO: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_cv_exeext" >&5
+echo "${ECHO_T}$ac_cv_exeext" >&6
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+echo "$as_me:$LINENO: checking for suffix of object files" >&5
+echo $ECHO_N "checking for suffix of object files... $ECHO_C" >&6
+if test "${ac_cv_objext+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  for ac_file in `(ls conftest.o conftest.obj; ls conftest.*) 2>/dev/null`; do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_objext" >&5
+echo "${ECHO_T}$ac_cv_objext" >&6
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
+echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6
+if test "${ac_cv_c_compiler_gnu+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_compiler_gnu=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_compiler_gnu=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5
+echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6
+GCC=`test $ac_compiler_gnu = yes && echo yes`
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+CFLAGS="-g"
+echo "$as_me:$LINENO: checking whether $CC accepts -g" >&5
+echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_g+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_g=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_prog_cc_g=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_cc_g" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_g" >&6
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+echo "$as_me:$LINENO: checking for $CC option to accept ANSI C" >&5
+echo $ECHO_N "checking for $CC option to accept ANSI C... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_prog_cc_stdc=no
+ac_save_CC=$CC
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+# Don't try gcc -ansi; that turns off useful extensions and
+# breaks some systems' header files.
+# AIX			-qlanglvl=ansi
+# Ultrix and OSF/1	-std1
+# HP-UX 10.20 and later	-Ae
+# HP-UX older versions	-Aa -D_HPUX_SOURCE
+# SVR4			-Xc -D__EXTENSIONS__
+for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_stdc=$ac_arg
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext
+done
+rm -f conftest.$ac_ext conftest.$ac_objext
+CC=$ac_save_CC
+
+fi
+
+case "x$ac_cv_prog_cc_stdc" in
+  x|xno)
+    echo "$as_me:$LINENO: result: none needed" >&5
+echo "${ECHO_T}none needed" >&6 ;;
+  *)
+    echo "$as_me:$LINENO: result: $ac_cv_prog_cc_stdc" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_stdc" >&6
+    CC="$CC $ac_cv_prog_cc_stdc" ;;
+esac
+
+# Some people use a C++ compiler to compile C.  Since we use `exit',
+# in C++ we need to declare it.  In case someone uses the same compiler
+# for both compiling C and C++ we need to have the C++ compiler decide
+# the declaration of exit, since it's the most demanding environment.
+cat >conftest.$ac_ext <<_ACEOF
+#ifndef __cplusplus
+  choke me
+#endif
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  for ac_declaration in \
+   ''\
+   '#include <stdlib.h>' \
+   'extern "C" void std::exit (int) throw (); using std::exit;' \
+   'extern "C" void std::exit (int); using std::exit;' \
+   'extern "C" void exit (int) throw ();' \
+   'extern "C" void exit (int);' \
+   'void exit (int);'
+do
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+$ac_declaration
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+continue
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+done
+rm -f conftest*
+if test -n "$ac_declaration"; then
+  echo '#ifdef __cplusplus' >>confdefs.h
+  echo $ac_declaration      >>confdefs.h
+  echo '#endif'             >>confdefs.h
+fi
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_aux_dir=
+for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do
+  if test -f $ac_dir/install-sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f $ac_dir/install.sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  elif test -f $ac_dir/shtool; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/shtool install -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  { { echo "$as_me:$LINENO: error: cannot find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." >&5
+echo "$as_me: error: cannot find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"
+ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure.
+
+# Make sure we can run config.sub.
+$ac_config_sub sun4 >/dev/null 2>&1 ||
+  { { echo "$as_me:$LINENO: error: cannot run $ac_config_sub" >&5
+echo "$as_me: error: cannot run $ac_config_sub" >&2;}
+   { (exit 1); exit 1; }; }
+
+echo "$as_me:$LINENO: checking build system type" >&5
+echo $ECHO_N "checking build system type... $ECHO_C" >&6
+if test "${ac_cv_build+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_build_alias=$build_alias
+test -z "$ac_cv_build_alias" &&
+  ac_cv_build_alias=`$ac_config_guess`
+test -z "$ac_cv_build_alias" &&
+  { { echo "$as_me:$LINENO: error: cannot guess build type; you must specify one" >&5
+echo "$as_me: error: cannot guess build type; you must specify one" >&2;}
+   { (exit 1); exit 1; }; }
+ac_cv_build=`$ac_config_sub $ac_cv_build_alias` ||
+  { { echo "$as_me:$LINENO: error: $ac_config_sub $ac_cv_build_alias failed" >&5
+echo "$as_me: error: $ac_config_sub $ac_cv_build_alias failed" >&2;}
+   { (exit 1); exit 1; }; }
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_build" >&5
+echo "${ECHO_T}$ac_cv_build" >&6
+build=$ac_cv_build
+build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+
+echo "$as_me:$LINENO: checking host system type" >&5
+echo $ECHO_N "checking host system type... $ECHO_C" >&6
+if test "${ac_cv_host+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_host_alias=$host_alias
+test -z "$ac_cv_host_alias" &&
+  ac_cv_host_alias=$ac_cv_build_alias
+ac_cv_host=`$ac_config_sub $ac_cv_host_alias` ||
+  { { echo "$as_me:$LINENO: error: $ac_config_sub $ac_cv_host_alias failed" >&5
+echo "$as_me: error: $ac_config_sub $ac_cv_host_alias failed" >&2;}
+   { (exit 1); exit 1; }; }
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_host" >&5
+echo "${ECHO_T}$ac_cv_host" >&6
+host=$ac_cv_host
+host_cpu=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+
+echo "$as_me:$LINENO: checking target system type" >&5
+echo $ECHO_N "checking target system type... $ECHO_C" >&6
+if test "${ac_cv_target+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_target_alias=$target_alias
+test "x$ac_cv_target_alias" = "x" &&
+  ac_cv_target_alias=$ac_cv_host_alias
+ac_cv_target=`$ac_config_sub $ac_cv_target_alias` ||
+  { { echo "$as_me:$LINENO: error: $ac_config_sub $ac_cv_target_alias failed" >&5
+echo "$as_me: error: $ac_config_sub $ac_cv_target_alias failed" >&2;}
+   { (exit 1); exit 1; }; }
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_target" >&5
+echo "${ECHO_T}$ac_cv_target" >&6
+target=$ac_cv_target
+target_cpu=`echo $ac_cv_target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+target_vendor=`echo $ac_cv_target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+target_os=`echo $ac_cv_target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+
+# The aliases save the names the user supplied, while $host etc.
+# will get canonicalized.
+test -n "$target_alias" &&
+  test "$program_prefix$program_suffix$program_transform_name" = \
+    NONENONEs,x,x, &&
+  program_prefix=${target_alias}-
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# ./install, which can be erroneously created by make from ./install.sh.
+echo "$as_me:$LINENO: checking for a BSD-compatible install" >&5
+echo $ECHO_N "checking for a BSD-compatible install... $ECHO_C" >&6
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in
+  ./ | .// | /cC/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        if $as_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+          if test $ac_prog = install &&
+            grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+            # AIX install.  It has an incompatible calling convention.
+            :
+          elif test $ac_prog = install &&
+            grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+            # program-specific install script used by HP pwplus--don't use.
+            :
+          else
+            ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+            break 3
+          fi
+        fi
+      done
+    done
+    ;;
+esac
+done
+
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  We don't cache a
+    # path for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the path is relative.
+    INSTALL=$ac_install_sh
+  fi
+fi
+echo "$as_me:$LINENO: result: $INSTALL" >&5
+echo "${ECHO_T}$INSTALL" >&6
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
+echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&6
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test "${ac_cv_prog_CPP+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+                     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+echo "$as_me:$LINENO: result: $CPP" >&5
+echo "${ECHO_T}$CPP" >&6
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+                     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  :
+else
+  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&5
+echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+echo "$as_me:$LINENO: checking for egrep" >&5
+echo $ECHO_N "checking for egrep... $ECHO_C" >&6
+if test "${ac_cv_prog_egrep+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if echo a | (grep -E '(a|b)') >/dev/null 2>&1
+    then ac_cv_prog_egrep='grep -E'
+    else ac_cv_prog_egrep='egrep'
+    fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_egrep" >&5
+echo "${ECHO_T}$ac_cv_prog_egrep" >&6
+ EGREP=$ac_cv_prog_egrep
+
+
+echo "$as_me:$LINENO: checking for ANSI C header files" >&5
+echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6
+if test "${ac_cv_header_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_header_stdc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_stdc=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then
+  :
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+                   (('a' <= (c) && (c) <= 'i') \
+                     || ('j' <= (c) && (c) <= 'r') \
+                     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+        || toupper (i) != TOUPPER (i))
+      exit(2);
+  exit (0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_header_stdc=no
+fi
+rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdc" >&5
+echo "${ECHO_T}$ac_cv_header_stdc" >&6
+if test $ac_cv_header_stdc = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define STDC_HEADERS 1
+_ACEOF
+
+fi
+
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+
+
+
+
+
+
+
+
+
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+                  inttypes.h stdint.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Header=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Header=no"
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in sgtty.h termio.h termios.h sys/reg.h string.h 		 proc_service.h sys/procfs.h thread_db.h linux/elf.h 		 stdlib.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc in
+  yes:no )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------ ##
+## Report this to bug-autoconf@gnu.org. ##
+## ------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+  no:yes )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header: check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------ ##
+## Report this to bug-autoconf@gnu.org. ##
+## ------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+echo "$as_me:$LINENO: checking whether strerror must be declared" >&5
+echo $ECHO_N "checking whether strerror must be declared... $ECHO_C" >&6
+if test "${bfd_cv_decl_needed_strerror+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+int
+main ()
+{
+char *(*pfn) = (char *(*)) strerror
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  bfd_cv_decl_needed_strerror=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+bfd_cv_decl_needed_strerror=yes
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+echo "$as_me:$LINENO: result: $bfd_cv_decl_needed_strerror" >&5
+echo "${ECHO_T}$bfd_cv_decl_needed_strerror" >&6
+if test $bfd_cv_decl_needed_strerror = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NEED_DECLARATION_STRERROR 1
+_ACEOF
+
+fi
+
+
+. ${srcdir}/configure.srv
+
+if test "${srv_linux_usrregs}" = "yes"; then
+  cat >>confdefs.h <<\_ACEOF
+#define HAVE_LINUX_USRREGS 1
+_ACEOF
+
+fi
+
+if test "${srv_linux_regsets}" = "yes"; then
+  echo "$as_me:$LINENO: checking for PTRACE_GETREGS" >&5
+echo $ECHO_N "checking for PTRACE_GETREGS... $ECHO_C" >&6
+  if test "${gdbsrv_cv_have_ptrace_getregs+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/ptrace.h>
+int
+main ()
+{
+PTRACE_GETREGS;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gdbsrv_cv_have_ptrace_getregs=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+gdbsrv_cv_have_ptrace_getregs=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+  echo "$as_me:$LINENO: result: $gdbsrv_cv_have_ptrace_getregs" >&5
+echo "${ECHO_T}$gdbsrv_cv_have_ptrace_getregs" >&6
+  if test "${gdbsrv_cv_have_ptrace_getregs}" = "yes"; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LINUX_REGSETS 1
+_ACEOF
+
+  fi
+
+  echo "$as_me:$LINENO: checking for PTRACE_GETFPXREGS" >&5
+echo $ECHO_N "checking for PTRACE_GETFPXREGS... $ECHO_C" >&6
+  if test "${gdbsrv_cv_have_ptrace_getfpxregs+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/ptrace.h>
+int
+main ()
+{
+PTRACE_GETFPXREGS;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gdbsrv_cv_have_ptrace_getfpxregs=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+gdbsrv_cv_have_ptrace_getfpxregs=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+  echo "$as_me:$LINENO: result: $gdbsrv_cv_have_ptrace_getfpxregs" >&5
+echo "${ECHO_T}$gdbsrv_cv_have_ptrace_getfpxregs" >&6
+  if test "${gdbsrv_cv_have_ptrace_getfpxregs}" = "yes"; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_PTRACE_GETFPXREGS 1
+_ACEOF
+
+  fi
+fi
+
+if test "$ac_cv_header_sys_procfs_h" = yes; then
+  echo "$as_me:$LINENO: checking for lwpid_t in sys/procfs.h" >&5
+echo $ECHO_N "checking for lwpid_t in sys/procfs.h... $ECHO_C" >&6
+ if test "${bfd_cv_have_sys_procfs_type_lwpid_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#define _SYSCALL32
+#include <sys/procfs.h>
+int
+main ()
+{
+lwpid_t avar
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  bfd_cv_have_sys_procfs_type_lwpid_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+bfd_cv_have_sys_procfs_type_lwpid_t=no
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+ if test $bfd_cv_have_sys_procfs_type_lwpid_t = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_LWPID_T 1
+_ACEOF
+
+ fi
+ echo "$as_me:$LINENO: result: $bfd_cv_have_sys_procfs_type_lwpid_t" >&5
+echo "${ECHO_T}$bfd_cv_have_sys_procfs_type_lwpid_t" >&6
+
+  echo "$as_me:$LINENO: checking for psaddr_t in sys/procfs.h" >&5
+echo $ECHO_N "checking for psaddr_t in sys/procfs.h... $ECHO_C" >&6
+ if test "${bfd_cv_have_sys_procfs_type_psaddr_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#define _SYSCALL32
+#include <sys/procfs.h>
+int
+main ()
+{
+psaddr_t avar
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  bfd_cv_have_sys_procfs_type_psaddr_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+bfd_cv_have_sys_procfs_type_psaddr_t=no
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+ if test $bfd_cv_have_sys_procfs_type_psaddr_t = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_PSADDR_T 1
+_ACEOF
+
+ fi
+ echo "$as_me:$LINENO: result: $bfd_cv_have_sys_procfs_type_psaddr_t" >&5
+echo "${ECHO_T}$bfd_cv_have_sys_procfs_type_psaddr_t" >&6
+
+  echo "$as_me:$LINENO: checking for prgregset_t in sys/procfs.h" >&5
+echo $ECHO_N "checking for prgregset_t in sys/procfs.h... $ECHO_C" >&6
+ if test "${bfd_cv_have_sys_procfs_type_prgregset_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#define _SYSCALL32
+#include <sys/procfs.h>
+int
+main ()
+{
+prgregset_t avar
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  bfd_cv_have_sys_procfs_type_prgregset_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+bfd_cv_have_sys_procfs_type_prgregset_t=no
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+ if test $bfd_cv_have_sys_procfs_type_prgregset_t = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_PRGREGSET_T 1
+_ACEOF
+
+ fi
+ echo "$as_me:$LINENO: result: $bfd_cv_have_sys_procfs_type_prgregset_t" >&5
+echo "${ECHO_T}$bfd_cv_have_sys_procfs_type_prgregset_t" >&6
+
+  echo "$as_me:$LINENO: checking for prfpregset_t in sys/procfs.h" >&5
+echo $ECHO_N "checking for prfpregset_t in sys/procfs.h... $ECHO_C" >&6
+ if test "${bfd_cv_have_sys_procfs_type_prfpregset_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#define _SYSCALL32
+#include <sys/procfs.h>
+int
+main ()
+{
+prfpregset_t avar
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  bfd_cv_have_sys_procfs_type_prfpregset_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+bfd_cv_have_sys_procfs_type_prfpregset_t=no
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+ if test $bfd_cv_have_sys_procfs_type_prfpregset_t = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_PRFPREGSET_T 1
+_ACEOF
+
+ fi
+ echo "$as_me:$LINENO: result: $bfd_cv_have_sys_procfs_type_prfpregset_t" >&5
+echo "${ECHO_T}$bfd_cv_have_sys_procfs_type_prfpregset_t" >&6
+
+
+
+
+  if test $bfd_cv_have_sys_procfs_type_prfpregset_t = yes; then
+    echo "$as_me:$LINENO: checking whether prfpregset_t type is broken" >&5
+echo $ECHO_N "checking whether prfpregset_t type is broken... $ECHO_C" >&6
+    if test "${gdb_cv_prfpregset_t_broken+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test "$cross_compiling" = yes; then
+  gdb_cv_prfpregset_t_broken=yes
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/procfs.h>
+       int main ()
+       {
+         if (sizeof (prfpregset_t) == sizeof (void *))
+           return 1;
+         return 0;
+       }
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gdb_cv_prfpregset_t_broken=no
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+gdb_cv_prfpregset_t_broken=yes
+fi
+rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+
+    echo "$as_me:$LINENO: result: $gdb_cv_prfpregset_t_broken" >&5
+echo "${ECHO_T}$gdb_cv_prfpregset_t_broken" >&6
+    if test $gdb_cv_prfpregset_t_broken = yes; then
+      cat >>confdefs.h <<\_ACEOF
+#define PRFPREGSET_T_BROKEN 1
+_ACEOF
+
+    fi
+  fi
+
+  echo "$as_me:$LINENO: checking for elf_fpregset_t in sys/procfs.h" >&5
+echo $ECHO_N "checking for elf_fpregset_t in sys/procfs.h... $ECHO_C" >&6
+ if test "${bfd_cv_have_sys_procfs_type_elf_fpregset_t+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#define _SYSCALL32
+#include <sys/procfs.h>
+int
+main ()
+{
+elf_fpregset_t avar
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  bfd_cv_have_sys_procfs_type_elf_fpregset_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+bfd_cv_have_sys_procfs_type_elf_fpregset_t=no
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+ if test $bfd_cv_have_sys_procfs_type_elf_fpregset_t = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_ELF_FPREGSET_T 1
+_ACEOF
+
+ fi
+ echo "$as_me:$LINENO: result: $bfd_cv_have_sys_procfs_type_elf_fpregset_t" >&5
+echo "${ECHO_T}$bfd_cv_have_sys_procfs_type_elf_fpregset_t" >&6
+
+fi
+
+srv_thread_depfiles=
+srv_libs=
+USE_THREAD_DB=
+
+
+GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_thread_depfiles"
+GDBSERVER_LIBS="$srv_libs -L../../../../../libxc/ -lxc"
+
+
+
+
+
+          ac_config_files="$ac_config_files Makefile"
+          ac_config_commands="$ac_config_commands default"
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+{
+  (set) 2>&1 |
+    case `(ac_space=' '; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      # `set' does not quote correctly, so add quotes (double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \).
+      sed -n \
+        "s/'/'\\\\''/g;
+    	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;;
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n \
+        "s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+} |
+  sed '
+     t clear
+     : clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     /^ac_cv_env/!s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     : end' >>confcache
+if diff $cache_file confcache >/dev/null 2>&1; then :; else
+  if test -w $cache_file; then
+    test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
+    cat confcache >$cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[ 	]*VPATH[ 	]*=/{
+s/:*\$(srcdir):*/:/;
+s/:*\${srcdir}:*/:/;
+s/:*@srcdir@:*/:/;
+s/^\([^=]*=[ 	]*\):*/\1/;
+s/:*$//;
+s/^[^=]*=[ 	]*$//;
+}'
+fi
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_i=`echo "$ac_i" |
+         sed 's/\$U\././;s/\.o$//;s/\.obj$//'`
+  # 2. Add them.
+  ac_libobjs="$ac_libobjs $ac_i\$U.$ac_objext"
+  ac_ltlibobjs="$ac_ltlibobjs $ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+
+: ${CONFIG_STATUS=./config.status}
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ echo "$as_me:$LINENO: creating $CONFIG_STATUS" >&5
+echo "$as_me: creating $CONFIG_STATUS" >&6;}
+cat >$CONFIG_STATUS <<_ACEOF
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+SHELL=\${CONFIG_SHELL-$SHELL}
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+
+# Support unset when possible.
+if (FOO=FOO; unset FOO) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -n "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { { echo "$as_me:$LINENO: error: cannot find myself; rerun with an absolute path" >&5
+echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2;}
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { { echo "$as_me:$LINENO: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&5
+echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2;}
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="sed y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="sed y%*+%pp%;s%[^_$as_cr_alnum]%_%g"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+exec 6>&1
+
+# Open the log real soon, to keep \$[0] and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.  Logging --version etc. is OK.
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+} >&5
+cat >&5 <<_CSEOF
+
+This file was extended by $as_me, which was
+generated by GNU Autoconf 2.57.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+_CSEOF
+echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&5
+echo >&5
+_ACEOF
+
+# Files that config.status was made for.
+if test -n "$ac_config_files"; then
+  echo "config_files=\"$ac_config_files\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_headers"; then
+  echo "config_headers=\"$ac_config_headers\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_links"; then
+  echo "config_links=\"$ac_config_links\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_commands"; then
+  echo "config_commands=\"$ac_config_commands\"" >>$CONFIG_STATUS
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+ac_cs_usage="\
+\`$as_me' instantiates files from templates according to the
+current configuration.
+
+Usage: $0 [OPTIONS] [FILE]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number, then exit
+  -q, --quiet      do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+  --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+  --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to <bug-autoconf@gnu.org>."
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+ac_cs_version="\\
+config.status
+configured by $0, generated by GNU Autoconf 2.57,
+  with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
+
+Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
+Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+srcdir=$srcdir
+INSTALL="$INSTALL"
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+# If no file are specified by the user, then we need to provide default
+# value.  By we need to know if files were specified by the user.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=*)
+    ac_option=`expr "x$1" : 'x\([^=]*\)='`
+    ac_optarg=`expr "x$1" : 'x[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  -*)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  *) # This is not an option, so the user has probably given explicit
+     # arguments.
+     ac_option=$1
+     ac_need_defaults=false;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --vers* | -V )
+    echo "$ac_cs_version"; exit 0 ;;
+  --he | --h)
+    # Conflict between --help and --header
+    { { echo "$as_me:$LINENO: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; };;
+  --help | --hel | -h )
+    echo "$ac_cs_usage"; exit 0 ;;
+  --debug | --d* | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    CONFIG_FILES="$CONFIG_FILES $ac_optarg"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
+    ac_need_defaults=false;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) { { echo "$as_me:$LINENO: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; } ;;
+
+  *) ac_config_targets="$ac_config_targets $1" ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+if \$ac_cs_recheck; then
+  echo "running $SHELL $0 " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&6
+  exec $SHELL $0 $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+fi
+
+_ACEOF
+
+
+
+
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_config_target in $ac_config_targets
+do
+  case "$ac_config_target" in
+  # Handling of arguments.
+  "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+  "default" ) CONFIG_COMMANDS="$CONFIG_COMMANDS default" ;;
+  "config.h" ) CONFIG_HEADERS="$CONFIG_HEADERS config.h:config.in" ;;
+  *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
+echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason to put it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Create a temporary directory, and hook for its removal unless debugging.
+$debug ||
+{
+  trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
+  trap '{ (exit 1); exit 1; }' 1 2 13 15
+}
+
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./confstat$$-$RANDOM
+  (umask 077 && mkdir $tmp)
+} ||
+{
+   echo "$me: cannot create a temporary directory in ." >&2
+   { (exit 1); exit 1; }
+}
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+
+#
+# CONFIG_FILES section.
+#
+
+# No need to generate the scripts if there are no CONFIG_FILES.
+# This happens for instance when ./config.status config.h
+if test -n "\$CONFIG_FILES"; then
+  # Protect against being on the right side of a sed subst in config.status.
+  sed 's/,@/@@/; s/@,/@@/; s/,;t t\$/@;t t/; /@;t t\$/s/[\\\\&,]/\\\\&/g;
+   s/@@/,@/; s/@@/@,/; s/@;t t\$/,;t t/' >\$tmp/subs.sed <<\\CEOF
+s,@SHELL@,$SHELL,;t t
+s,@PATH_SEPARATOR@,$PATH_SEPARATOR,;t t
+s,@PACKAGE_NAME@,$PACKAGE_NAME,;t t
+s,@PACKAGE_TARNAME@,$PACKAGE_TARNAME,;t t
+s,@PACKAGE_VERSION@,$PACKAGE_VERSION,;t t
+s,@PACKAGE_STRING@,$PACKAGE_STRING,;t t
+s,@PACKAGE_BUGREPORT@,$PACKAGE_BUGREPORT,;t t
+s,@exec_prefix@,$exec_prefix,;t t
+s,@prefix@,$prefix,;t t
+s,@program_transform_name@,$program_transform_name,;t t
+s,@bindir@,$bindir,;t t
+s,@sbindir@,$sbindir,;t t
+s,@libexecdir@,$libexecdir,;t t
+s,@datadir@,$datadir,;t t
+s,@sysconfdir@,$sysconfdir,;t t
+s,@sharedstatedir@,$sharedstatedir,;t t
+s,@localstatedir@,$localstatedir,;t t
+s,@libdir@,$libdir,;t t
+s,@includedir@,$includedir,;t t
+s,@oldincludedir@,$oldincludedir,;t t
+s,@infodir@,$infodir,;t t
+s,@mandir@,$mandir,;t t
+s,@build_alias@,$build_alias,;t t
+s,@host_alias@,$host_alias,;t t
+s,@target_alias@,$target_alias,;t t
+s,@DEFS@,$DEFS,;t t
+s,@ECHO_C@,$ECHO_C,;t t
+s,@ECHO_N@,$ECHO_N,;t t
+s,@ECHO_T@,$ECHO_T,;t t
+s,@LIBS@,$LIBS,;t t
+s,@CC@,$CC,;t t
+s,@CFLAGS@,$CFLAGS,;t t
+s,@LDFLAGS@,$LDFLAGS,;t t
+s,@CPPFLAGS@,$CPPFLAGS,;t t
+s,@ac_ct_CC@,$ac_ct_CC,;t t
+s,@EXEEXT@,$EXEEXT,;t t
+s,@OBJEXT@,$OBJEXT,;t t
+s,@build@,$build,;t t
+s,@build_cpu@,$build_cpu,;t t
+s,@build_vendor@,$build_vendor,;t t
+s,@build_os@,$build_os,;t t
+s,@host@,$host,;t t
+s,@host_cpu@,$host_cpu,;t t
+s,@host_vendor@,$host_vendor,;t t
+s,@host_os@,$host_os,;t t
+s,@target@,$target,;t t
+s,@target_cpu@,$target_cpu,;t t
+s,@target_vendor@,$target_vendor,;t t
+s,@target_os@,$target_os,;t t
+s,@INSTALL_PROGRAM@,$INSTALL_PROGRAM,;t t
+s,@INSTALL_SCRIPT@,$INSTALL_SCRIPT,;t t
+s,@INSTALL_DATA@,$INSTALL_DATA,;t t
+s,@CPP@,$CPP,;t t
+s,@EGREP@,$EGREP,;t t
+s,@GDBSERVER_DEPFILES@,$GDBSERVER_DEPFILES,;t t
+s,@GDBSERVER_LIBS@,$GDBSERVER_LIBS,;t t
+s,@USE_THREAD_DB@,$USE_THREAD_DB,;t t
+s,@LIBOBJS@,$LIBOBJS,;t t
+s,@LTLIBOBJS@,$LTLIBOBJS,;t t
+CEOF
+
+_ACEOF
+
+  cat >>$CONFIG_STATUS <<\_ACEOF
+  # Split the substitutions into bite-sized pieces for seds with
+  # small command number limits, like on Digital OSF/1 and HP-UX.
+  ac_max_sed_lines=48
+  ac_sed_frag=1 # Number of current file.
+  ac_beg=1 # First line for current file.
+  ac_end=$ac_max_sed_lines # Line after last line for current file.
+  ac_more_lines=:
+  ac_sed_cmds=
+  while $ac_more_lines; do
+    if test $ac_beg -gt 1; then
+      sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    else
+      sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    fi
+    if test ! -s $tmp/subs.frag; then
+      ac_more_lines=false
+    else
+      # The purpose of the label and of the branching condition is to
+      # speed up the sed processing (if there are no `@' at all, there
+      # is no need to browse any of the substitutions).
+      # These are the two extra sed commands mentioned above.
+      (echo ':t
+  /@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed
+      if test -z "$ac_sed_cmds"; then
+  	ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed"
+      else
+  	ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed"
+      fi
+      ac_sed_frag=`expr $ac_sed_frag + 1`
+      ac_beg=$ac_end
+      ac_end=`expr $ac_end + $ac_max_sed_lines`
+    fi
+  done
+  if test -z "$ac_sed_cmds"; then
+    ac_sed_cmds=cat
+  fi
+fi # test -n "$CONFIG_FILES"
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+        cat >$tmp/stdin
+        ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories.
+  ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+         X"$ac_file" : 'X\(//\)[^/]' \| \
+         X"$ac_file" : 'X\(//\)$' \| \
+         X"$ac_file" : 'X\(/\)' \| \
+         .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+         X"$as_dir" : 'X\(//\)[^/]' \| \
+         X"$as_dir" : 'X\(//\)$' \| \
+         X"$as_dir" : 'X\(/\)' \| \
+         .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
+# absolute.
+ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
+ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
+ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
+
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_builddir$INSTALL ;;
+  esac
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    configure_input=
+  else
+    configure_input="$ac_file.  "
+  fi
+  configure_input=$configure_input"Generated from `echo $ac_file_in |
+                                     sed 's,.*/,,'` by configure."
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+         # Absolute (can't be DOS-style, as IFS=:)
+         test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+         echo $f;;
+      *) # Relative
+         if test -f "$f"; then
+           # Build tree
+           echo $f
+         elif test -f "$srcdir/$f"; then
+           # Source tree
+           echo $srcdir/$f
+         else
+           # /dev/null tree
+           { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+         fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+  sed "$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s,@configure_input@,$configure_input,;t t
+s,@srcdir@,$ac_srcdir,;t t
+s,@abs_srcdir@,$ac_abs_srcdir,;t t
+s,@top_srcdir@,$ac_top_srcdir,;t t
+s,@abs_top_srcdir@,$ac_abs_top_srcdir,;t t
+s,@builddir@,$ac_builddir,;t t
+s,@abs_builddir@,$ac_abs_builddir,;t t
+s,@top_builddir@,$ac_top_builddir,;t t
+s,@abs_top_builddir@,$ac_abs_top_builddir,;t t
+s,@INSTALL@,$ac_INSTALL,;t t
+" $ac_file_inputs | (eval "$ac_sed_cmds") >$tmp/out
+  rm -f $tmp/stdin
+  if test x"$ac_file" != x-; then
+    mv $tmp/out $ac_file
+  else
+    cat $tmp/out
+    rm -f $tmp/out
+  fi
+
+done
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+#
+# CONFIG_HEADER section.
+#
+
+# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
+# NAME is the cpp macro being defined and VALUE is the value it is being given.
+#
+# ac_d sets the value in "#define NAME VALUE" lines.
+ac_dA='s,^\([ 	]*\)#\([ 	]*define[ 	][ 	]*\)'
+ac_dB='[ 	].*$,\1#\2'
+ac_dC=' '
+ac_dD=',;t'
+# ac_u turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+ac_uA='s,^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+ac_uB='$,\1#\2define\3'
+ac_uC=' '
+ac_uD=',;t'
+
+for ac_file in : $CONFIG_HEADERS; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+        cat >$tmp/stdin
+        ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  test x"$ac_file" != x- && { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+         # Absolute (can't be DOS-style, as IFS=:)
+         test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+         echo $f;;
+      *) # Relative
+         if test -f "$f"; then
+           # Build tree
+           echo $f
+         elif test -f "$srcdir/$f"; then
+           # Source tree
+           echo $srcdir/$f
+         else
+           # /dev/null tree
+           { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+         fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+  # Remove the trailing spaces.
+  sed 's/[ 	]*$//' $ac_file_inputs >$tmp/in
+
+_ACEOF
+
+# Transform confdefs.h into two sed scripts, `conftest.defines' and
+# `conftest.undefs', that substitutes the proper values into
+# config.h.in to produce config.h.  The first handles `#define'
+# templates, and the second `#undef' templates.
+# And first: Protect against being on the right side of a sed subst in
+# config.status.  Protect against being in an unquoted here document
+# in config.status.
+rm -f conftest.defines conftest.undefs
+# Using a here document instead of a string reduces the quoting nightmare.
+# Putting comments in sed scripts is not portable.
+#
+# `end' is used to avoid that the second main sed command (meant for
+# 0-ary CPP macros) applies to n-ary macro definitions.
+# See the Autoconf documentation for `clear'.
+cat >confdef2sed.sed <<\_ACEOF
+s/[\\&,]/\\&/g
+s,[\\$`],\\&,g
+t clear
+: clear
+s,^[ 	]*#[ 	]*define[ 	][ 	]*\([^ 	(][^ 	(]*\)\(([^)]*)\)[ 	]*\(.*\)$,${ac_dA}\1${ac_dB}\1\2${ac_dC}\3${ac_dD},gp
+t end
+s,^[ 	]*#[ 	]*define[ 	][ 	]*\([^ 	][^ 	]*\)[ 	]*\(.*\)$,${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD},gp
+: end
+_ACEOF
+# If some macros were called several times there might be several times
+# the same #defines, which is useless.  Nevertheless, we may not want to
+# sort them, since we want the *last* AC-DEFINE to be honored.
+uniq confdefs.h | sed -n -f confdef2sed.sed >conftest.defines
+sed 's/ac_d/ac_u/g' conftest.defines >conftest.undefs
+rm -f confdef2sed.sed
+
+# This sed command replaces #undef with comments.  This is necessary, for
+# example, in the case of _POSIX_SOURCE, which is predefined and required
+# on some systems where configure will not decide to define it.
+cat >>conftest.undefs <<\_ACEOF
+s,^[ 	]*#[ 	]*undef[ 	][ 	]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
+_ACEOF
+
+# Break up conftest.defines because some shells have a limit on the size
+# of here documents, and old seds have small limits too (100 cmds).
+echo '  # Handle all the #define templates only if necessary.' >>$CONFIG_STATUS
+echo '  if grep "^[ 	]*#[ 	]*define" $tmp/in >/dev/null; then' >>$CONFIG_STATUS
+echo '  # If there are no defines, we may have an empty if/fi' >>$CONFIG_STATUS
+echo '  :' >>$CONFIG_STATUS
+rm -f conftest.tail
+while grep . conftest.defines >/dev/null
+do
+  # Write a limited-size here document to $tmp/defines.sed.
+  echo '  cat >$tmp/defines.sed <<CEOF' >>$CONFIG_STATUS
+  # Speed up: don't consider the non `#define' lines.
+  echo '/^[ 	]*#[ 	]*define/!b' >>$CONFIG_STATUS
+  # Work around the forget-to-reset-the-flag bug.
+  echo 't clr' >>$CONFIG_STATUS
+  echo ': clr' >>$CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.defines >>$CONFIG_STATUS
+  echo 'CEOF
+  sed -f $tmp/defines.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+' >>$CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.defines >conftest.tail
+  rm -f conftest.defines
+  mv conftest.tail conftest.defines
+done
+rm -f conftest.defines
+echo '  fi # grep' >>$CONFIG_STATUS
+echo >>$CONFIG_STATUS
+
+# Break up conftest.undefs because some shells have a limit on the size
+# of here documents, and old seds have small limits too (100 cmds).
+echo '  # Handle all the #undef templates' >>$CONFIG_STATUS
+rm -f conftest.tail
+while grep . conftest.undefs >/dev/null
+do
+  # Write a limited-size here document to $tmp/undefs.sed.
+  echo '  cat >$tmp/undefs.sed <<CEOF' >>$CONFIG_STATUS
+  # Speed up: don't consider the non `#undef'
+  echo '/^[ 	]*#[ 	]*undef/!b' >>$CONFIG_STATUS
+  # Work around the forget-to-reset-the-flag bug.
+  echo 't clr' >>$CONFIG_STATUS
+  echo ': clr' >>$CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.undefs >>$CONFIG_STATUS
+  echo 'CEOF
+  sed -f $tmp/undefs.sed $tmp/in >$tmp/out
+  rm -f $tmp/in
+  mv $tmp/out $tmp/in
+' >>$CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.undefs >conftest.tail
+  rm -f conftest.undefs
+  mv conftest.tail conftest.undefs
+done
+rm -f conftest.undefs
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    echo "/* Generated by configure.  */" >$tmp/config.h
+  else
+    echo "/* $ac_file.  Generated by configure.  */" >$tmp/config.h
+  fi
+  cat $tmp/in >>$tmp/config.h
+  rm -f $tmp/in
+  if test x"$ac_file" != x-; then
+    if diff $ac_file $tmp/config.h >/dev/null 2>&1; then
+      { echo "$as_me:$LINENO: $ac_file is unchanged" >&5
+echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+         X"$ac_file" : 'X\(//\)[^/]' \| \
+         X"$ac_file" : 'X\(//\)$' \| \
+         X"$ac_file" : 'X\(/\)' \| \
+         .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+      { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+         X"$as_dir" : 'X\(//\)[^/]' \| \
+         X"$as_dir" : 'X\(//\)$' \| \
+         X"$as_dir" : 'X\(/\)' \| \
+         .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+      rm -f $ac_file
+      mv $tmp/config.h $ac_file
+    fi
+  else
+    cat $tmp/config.h
+    rm -f $tmp/config.h
+  fi
+done
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+#
+# CONFIG_COMMANDS section.
+#
+for ac_file in : $CONFIG_COMMANDS; do test "x$ac_file" = x: && continue
+  ac_dest=`echo "$ac_file" | sed 's,:.*,,'`
+  ac_source=`echo "$ac_file" | sed 's,[^:]*:,,'`
+  ac_dir=`(dirname "$ac_dest") 2>/dev/null ||
+$as_expr X"$ac_dest" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+         X"$ac_dest" : 'X\(//\)[^/]' \| \
+         X"$ac_dest" : 'X\(//\)$' \| \
+         X"$ac_dest" : 'X\(/\)' \| \
+         .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_dest" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
+# absolute.
+ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
+ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
+ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
+
+
+  { echo "$as_me:$LINENO: executing $ac_dest commands" >&5
+echo "$as_me: executing $ac_dest commands" >&6;}
+  case $ac_dest in
+    default ) case x$CONFIG_HEADERS in
+xconfig.h:config.in)
+echo > stamp-h ;;
+esac
+ ;;
+  esac
+done
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+{ (exit 0); exit 0; }
+_ACEOF
+chmod +x $CONFIG_STATUS
+ac_clean_files=$ac_clean_files_save
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || { (exit 1); exit 1; }
+fi
+
diff --git a/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure.in b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure.in
new file mode 100644
index 0000000000..bf88ae6dcd
--- /dev/null
+++ b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure.in
@@ -0,0 +1,121 @@
+dnl Autoconf configure script for GDB server.
+dnl Copyright 2000, 2002 Free Software Foundation, Inc.
+dnl
+dnl This file is part of GDB.
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+dnl Process this file with autoconf to produce a configure script.
+
+AC_INIT(server.c)
+AC_CONFIG_HEADER(config.h:config.in)
+
+AC_PROG_CC
+
+AC_CANONICAL_SYSTEM
+
+AC_PROG_INSTALL
+
+AC_HEADER_STDC
+
+AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
+		 proc_service.h sys/procfs.h thread_db.h linux/elf.h dnl
+		 stdlib.h unistd.h)
+
+BFD_NEED_DECLARATION(strerror)
+
+. ${srcdir}/configure.srv
+
+if test "${srv_linux_usrregs}" = "yes"; then
+  AC_DEFINE(HAVE_LINUX_USRREGS)
+fi
+
+if test "${srv_linux_regsets}" = "yes"; then
+  AC_MSG_CHECKING(for PTRACE_GETREGS)
+  AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getregs,
+  [AC_TRY_COMPILE([#include <sys/ptrace.h>],
+		  [PTRACE_GETREGS;],
+		  [gdbsrv_cv_have_ptrace_getregs=yes],
+		  [gdbsrv_cv_have_ptrace_getregs=no])])
+  AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getregs)
+  if test "${gdbsrv_cv_have_ptrace_getregs}" = "yes"; then
+    AC_DEFINE(HAVE_LINUX_REGSETS)
+  fi
+
+  AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
+  AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getfpxregs,
+  [AC_TRY_COMPILE([#include <sys/ptrace.h>],
+		  [PTRACE_GETFPXREGS;],
+		  [gdbsrv_cv_have_ptrace_getfpxregs=yes],
+		  [gdbsrv_cv_have_ptrace_getfpxregs=no])])
+  AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getfpxregs)
+  if test "${gdbsrv_cv_have_ptrace_getfpxregs}" = "yes"; then
+    AC_DEFINE(HAVE_PTRACE_GETFPXREGS)
+  fi
+fi
+
+if test "$ac_cv_header_sys_procfs_h" = yes; then
+  BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
+  BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
+  BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
+  BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t)
+
+  dnl Check for broken prfpregset_t type
+
+  dnl For Linux/i386, glibc 2.1.3 was released with a bogus
+  dnl prfpregset_t type (it's a typedef for the pointer to a struct
+  dnl instead of the struct itself).  We detect this here, and work
+  dnl around it in gdb_proc_service.h.
+
+  if test $bfd_cv_have_sys_procfs_type_prfpregset_t = yes; then
+    AC_MSG_CHECKING(whether prfpregset_t type is broken)
+    AC_CACHE_VAL(gdb_cv_prfpregset_t_broken,
+      [AC_TRY_RUN([#include <sys/procfs.h>
+       int main ()
+       {
+         if (sizeof (prfpregset_t) == sizeof (void *))
+           return 1;
+         return 0;
+       }],
+       gdb_cv_prfpregset_t_broken=no,
+       gdb_cv_prfpregset_t_broken=yes,
+       gdb_cv_prfpregset_t_broken=yes)])
+    AC_MSG_RESULT($gdb_cv_prfpregset_t_broken)
+    if test $gdb_cv_prfpregset_t_broken = yes; then
+      AC_DEFINE(PRFPREGSET_T_BROKEN)
+    fi
+  fi
+
+  BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
+fi
+
+srv_thread_depfiles=
+srv_libs=
+USE_THREAD_DB=
+
+
+GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_thread_depfiles"
+GDBSERVER_LIBS="$srv_libs -L../../../../../libxc/ -lxc"
+
+AC_SUBST(GDBSERVER_DEPFILES)
+AC_SUBST(GDBSERVER_LIBS)
+AC_SUBST(USE_THREAD_DB)
+
+AC_OUTPUT(Makefile,
+[case x$CONFIG_HEADERS in
+xconfig.h:config.in)
+echo > stamp-h ;;
+esac
+])
diff --git a/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure.srv b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure.srv
new file mode 100644
index 0000000000..a586a51db9
--- /dev/null
+++ b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/configure.srv
@@ -0,0 +1,75 @@
+# Mappings from configuration triplets to gdbserver build options.
+# This is invoked from the autoconf-generated configure script, to
+# produce the appropriate Makefile substitutions.
+
+# This file sets the following shell variables:
+#   srv_regobj		The register protocol appropriate for this target.
+#   srv_tgtobj		Any other target-specific modules appropriate
+#			for this target.
+#
+# In addition, on GNU/Linux the following shell variables will be set:
+#   srv_linux_regsets	Set to "yes" if ptrace(PTRACE_GETREGS) and friends
+#			may be available on this platform;  unset otherwise.
+#			They will only be used if <sys/ptrace.h> defines
+#			PTRACE_GETREGS.
+#   srv_linux_usrregs	Set to "yes" if we can get at registers via
+#			PTRACE_PEEKUSR / PTRACE_POKEUSR.
+
+# Input is taken from the "${target}" variable.
+
+case "${target}" in
+  arm*-*-linux*)	srv_regobj=reg-arm.o
+			srv_tgtobj="linux-xen-low.o linux-arm-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  i[34567]86-*-linux*)	srv_regobj=reg-i386-linux.o
+			srv_tgtobj="linux-xen-low.o linux-i386-low.o i387-fp.o"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  ia64-*-linux*)	srv_regobj=reg-ia64.o
+			srv_tgtobj="linux-low.o linux-ia64-low.o"
+			srv_linux_usrregs=yes
+			;;
+  m68*-*-linux*)	srv_regobj=reg-m68k.o
+			srv_tgtobj="linux-low.o linux-m68k-low.o"
+			srv_linux_usrregs=yes
+			;;
+  mips*-*-linux*)	srv_regobj=reg-mips.o
+			srv_tgtobj="linux-low.o linux-mips-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  powerpc*-*-linux*)	srv_regobj=reg-ppc.o
+			srv_tgtobj="linux-low.o linux-ppc-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  s390-*-linux*)	srv_regobj=reg-s390.o
+			srv_tgtobj="linux-low.o linux-s390-low.o"
+			srv_linux_usrregs=yes
+			;;
+  s390x-*-linux*)	srv_regobj=reg-s390x.o
+			srv_tgtobj="linux-low.o linux-s390-low.o"
+			srv_linux_usrregs=yes
+			;;
+  sh*-*-linux*)		srv_regobj=reg-sh.o
+			srv_tgtobj="linux-low.o linux-sh-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  x86_64-*-linux*)	srv_regobj=reg-x86-64.o
+			srv_tgtobj="linux-low.o linux-x86-64-low.o i387-fp.o"
+			srv_linux_regsets=yes
+			;;
+  xscale*-*-linux*)	srv_regobj=reg-arm.o
+			srv_tgtobj="linux-low.o linux-arm-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  *)			echo "Error: target not supported by gdbserver."
+			exit 1
+			;;
+esac
diff --git a/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/linux-xen-low.c b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/linux-xen-low.c
new file mode 100644
index 0000000000..015c4f1938
--- /dev/null
+++ b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/linux-xen-low.c
@@ -0,0 +1,556 @@
+/* Low level interface to ptrace, for the remote server for GDB.
+   Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "server.h"
+#include "linux-low.h"
+
+#include <sys/wait.h>
+#include <stdio.h>
+#include <sys/param.h>
+#include <sys/dir.h>
+#include <sys/ptrace.h>
+#include <sys/user.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <xc.h>
+#define TRACE_ENTER /* printf("enter %s\n", __FUNCTION__) */
+long (*myptrace)(enum __ptrace_request, pid_t, long, long);
+int (*myxcwait)(int domain, int *status, int options) ;
+
+
+#define DOMFLAGS_DYING     (1<<0) /* Domain is scheduled to die.             */
+#define DOMFLAGS_SHUTDOWN  (1<<2) /* The guest OS has shut down.             */
+#define DOMFLAGS_PAUSED    (1<<3) /* Currently paused by control software.   */
+#define DOMFLAGS_BLOCKED   (1<<4) /* Currently blocked pending an event.     */
+#define DOMFLAGS_RUNNING   (1<<5) /* Domain is currently running.            */
+
+
+
+struct inferior_list all_processes;
+
+
+static int current_domain;
+static int expect_signal = 0;
+static int signal_to_send = 0; 
+static void linux_resume (struct thread_resume *resume_info);
+
+int debug_threads;
+int using_threads;
+extern int isfile;
+
+struct pending_signals
+{
+  int signal;
+  struct pending_signals *prev;
+};
+
+#define PTRACE_ARG3_TYPE long
+#define PTRACE_XFER_TYPE long
+
+static int use_regsets_p = 1;
+
+
+#define pid_of(proc) ((proc)->head.id)
+
+/* FIXME: Delete eventually.  */
+#define inferior_pid (pid_of (get_thread_process (current_inferior)))
+
+/* This function should only be called if the process got a SIGTRAP.
+   The SIGTRAP could mean several things.
+
+   On i386, where decr_pc_after_break is non-zero:
+   If we were single-stepping this process using PTRACE_SINGLESTEP,
+   we will get only the one SIGTRAP (even if the instruction we
+   stepped over was a breakpoint).  The value of $eip will be the
+   next instruction.
+   If we continue the process using PTRACE_CONT, we will get a
+   SIGTRAP when we hit a breakpoint.  The value of $eip will be
+   the instruction after the breakpoint (i.e. needs to be
+   decremented).  If we report the SIGTRAP to GDB, we must also
+   report the undecremented PC.  If we cancel the SIGTRAP, we
+   must resume at the decremented PC.
+
+   (Presumably, not yet tested) On a non-decr_pc_after_break machine
+   with hardware or kernel single-step:
+   If we single-step over a breakpoint instruction, our PC will
+   point at the following instruction.  If we continue and hit a
+   breakpoint instruction, our PC will point at the breakpoint
+   instruction.  */
+#if 0
+static CORE_ADDR
+get_stop_pc (void)
+{
+  CORE_ADDR stop_pc = (*the_low_target.get_pc) ();
+
+  if (get_thread_process (current_inferior)->stepping)
+    return stop_pc;
+  else
+    return stop_pc - the_low_target.decr_pc_after_break;
+}
+#endif
+static void *
+add_process (int pid)
+{
+  struct process_info *process;
+
+  process = (struct process_info *) malloc (sizeof (*process));
+  memset (process, 0, sizeof (*process));
+
+  process->head.id = pid;
+
+  /* Default to tid == lwpid == pid.  */
+  process->tid = pid;
+  process->lwpid = pid;
+
+  add_inferior_to_list (&all_processes, &process->head);
+
+  return process;
+}
+
+/* Start an inferior process and returns its pid.
+   ALLARGS is a vector of program-name and args. */
+
+static int
+linux_create_inferior (char *program, char **allargs)
+{
+
+  fprintf (stderr, "Cannot exec %s: %s.\n", program,
+	   strerror (errno));
+  fflush (stderr);
+  _exit (0177);
+  /* NOT REACHED */
+  return -1;
+}
+
+int
+linux_attach (int domain)
+{
+    struct process_info *new_process;
+    current_domain = domain;
+    if (myptrace (PTRACE_ATTACH, domain, 0, 0) != 0) {
+	fprintf (stderr, "Cannot attach to domain %d: %s (%d)\n", domain,
+		 strerror (errno), errno);
+	fflush (stderr);
+	_exit (0177);
+    }
+    
+    new_process = (struct process_info *) add_process (domain);
+    add_thread (domain, new_process);
+
+    /* Don't ignore the initial SIGSTOP if we just attached to this process.  */
+    new_process->stop_expected = 0;
+    
+    return 0;
+}
+
+/* Kill the inferior process.  Make us have no inferior.  */
+
+static void
+linux_kill_one_process (struct inferior_list_entry *entry)
+{
+  struct thread_info *thread = (struct thread_info *) entry;
+  struct process_info *process = get_thread_process (thread);
+  myptrace (PTRACE_KILL, pid_of (process), 0, 0);
+
+}
+
+static void
+linux_kill (void)
+{
+  for_each_inferior (&all_threads, linux_kill_one_process);
+}
+
+
+static void
+linux_detach_one_process (struct inferior_list_entry *entry)
+{
+  struct thread_info *thread = (struct thread_info *) entry;
+  struct process_info *process = get_thread_process (thread);
+
+  myptrace (PTRACE_DETACH, pid_of (process), 0, 0);
+}
+
+
+static void
+linux_detach (void)
+{
+  for_each_inferior (&all_threads, linux_detach_one_process);
+}
+
+/* Return nonzero if the given thread is still alive.  */
+static int
+linux_thread_alive (int tid)
+{
+    if (find_inferior_id (&all_threads, tid) != NULL)
+	return 1;
+    else
+	return 0;
+}
+
+/* Wait for process, returns status.  */
+
+static unsigned char
+linux_wait (char *status)
+{
+  int w;
+  if (myxcwait(current_domain, &w, 0))
+      return -1;
+  
+  if (w & (DOMFLAGS_SHUTDOWN|DOMFLAGS_DYING)) {
+      *status = 'W';
+      return 0;
+  }
+
+
+  *status = 'T';
+  if (expect_signal)
+      return expect_signal;
+  else
+      return SIGTRAP;
+
+}
+
+static void
+linux_resume (struct thread_resume *resume_info)
+{
+  int step = resume_info->step;
+  TRACE_ENTER;
+  expect_signal = resume_info->sig;
+  for_each_inferior(&all_threads, regcache_invalidate_one);
+
+  myptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, current_domain, 0, 0);
+
+}
+
+
+static int
+regsets_fetch_inferior_registers ()
+{
+  struct regset_info *regset;
+  TRACE_ENTER;
+  regset = target_regsets;
+
+  while (regset->size >= 0)
+    {
+      void *buf;
+      int res;
+
+      if (regset->size == 0)
+	{
+	  regset ++;
+	  continue;
+	}
+
+      buf = malloc (regset->size);
+      res = myptrace (regset->get_request, inferior_pid, 0, (PTRACE_XFER_TYPE)buf);
+      if (res < 0)
+	{
+	  if (errno == EIO)
+	    {
+	      /* If we get EIO on the first regset, do not try regsets again.
+		 If we get EIO on a later regset, disable that regset.  */
+	      if (regset == target_regsets)
+		{
+		  use_regsets_p = 0;
+		  return -1;
+		}
+	      else
+		{
+		  regset->size = 0;
+		  continue;
+		}
+	    }
+	  else
+	    {
+	      char s[256];
+	      sprintf (s, "ptrace(regsets_fetch_inferior_registers) PID=%d",
+		       inferior_pid);
+	      perror (s);
+	    }
+	}
+      regset->store_function (buf);
+      regset ++;
+    }
+  return 0;
+}
+
+static int
+regsets_store_inferior_registers ()
+{
+  struct regset_info *regset;
+  TRACE_ENTER;
+  regset = target_regsets;
+
+  while (regset->size >= 0)
+    {
+      void *buf;
+      int res;
+
+      if (regset->size == 0)
+	{
+	  regset ++;
+	  continue;
+	}
+
+      buf = malloc (regset->size);
+      regset->fill_function (buf);
+      res = myptrace (regset->set_request, inferior_pid, 0, (PTRACE_XFER_TYPE)buf);
+      if (res < 0)
+	{
+	  if (errno == EIO)
+	    {
+	      /* If we get EIO on the first regset, do not try regsets again.
+		 If we get EIO on a later regset, disable that regset.  */
+	      if (regset == target_regsets)
+		{
+		  use_regsets_p = 0;
+		  return -1;
+		}
+	      else
+		{
+		  regset->size = 0;
+		  continue;
+		}
+	    }
+	  else
+	    {
+#ifdef DEBUG
+	      perror ("Warning: ptrace(regsets_store_inferior_registers)");
+#endif
+	    }
+	}
+      regset ++;
+      free (buf);
+    }
+  return 0;
+}
+
+
+
+
+void
+linux_fetch_registers (int regno)
+{
+  if (use_regsets_p)
+    {
+      if (regsets_fetch_inferior_registers () == 0)
+	return;
+    }
+
+}
+
+void
+linux_store_registers (int regno)
+{
+  if (use_regsets_p)
+    {
+      if (regsets_store_inferior_registers () == 0)
+	return;
+    }
+}
+
+
+/* Copy LEN bytes from inferior's memory starting at MEMADDR
+   to debugger memory starting at MYADDR.  */
+
+static int
+linux_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
+{
+  register int i;
+  /* Round starting address down to longword boundary.  */
+  register CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_XFER_TYPE);
+  /* Round ending address up; get number of longwords that makes.  */
+  register int count
+    = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1)
+      / sizeof (PTRACE_XFER_TYPE);
+  /* Allocate buffer of that many longwords.  */
+  register PTRACE_XFER_TYPE *buffer
+    = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE));
+
+  TRACE_ENTER;
+  /* Read all the longwords */
+  for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
+    {
+      errno = 0;
+      buffer[i] = myptrace (PTRACE_PEEKTEXT, inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
+      if (errno)
+	return errno;
+    }
+
+  /* Copy appropriate bytes out of the buffer.  */
+  memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), len);
+
+  return 0;
+}
+
+/* Copy LEN bytes of data from debugger memory at MYADDR
+   to inferior's memory at MEMADDR.
+   On failure (cannot write the inferior)
+   returns the value of errno.  */
+
+static int
+linux_write_memory (CORE_ADDR memaddr, const char *myaddr, int len)
+{
+  register int i;
+  /* Round starting address down to longword boundary.  */
+  register CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_XFER_TYPE);
+  /* Round ending address up; get number of longwords that makes.  */
+  register int count
+  = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1) / sizeof (PTRACE_XFER_TYPE);
+  /* Allocate buffer of that many longwords.  */
+  register PTRACE_XFER_TYPE *buffer = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE));
+  extern int errno;
+
+  TRACE_ENTER;
+
+  /* Fill start and end extra bytes of buffer with existing memory data.  */
+
+  buffer[0] = myptrace (PTRACE_PEEKTEXT, inferior_pid,
+		      (PTRACE_ARG3_TYPE) addr, 0);
+
+  if (count > 1)
+    {
+      buffer[count - 1]
+	= myptrace (PTRACE_PEEKTEXT, inferior_pid,
+		  (PTRACE_ARG3_TYPE) (addr + (count - 1)
+				      * sizeof (PTRACE_XFER_TYPE)),
+		  0);
+    }
+
+  /* Copy data to be written over corresponding part of buffer */
+
+  memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), myaddr, len);
+
+  /* Write the entire buffer.  */
+  for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
+    {
+      errno = 0;
+      myptrace (PTRACE_POKETEXT, inferior_pid, (PTRACE_ARG3_TYPE) addr, buffer[i]);
+      if (errno)
+	return errno;
+    }
+
+  return 0;
+}
+
+static void
+linux_look_up_symbols (void)
+{
+#if 0
+  using_threads = thread_db_init ();
+#endif
+}
+
+static void
+linux_send_signal (int signum)
+{
+  extern int signal_pid;
+
+  TRACE_ENTER;
+  signal_to_send = signum;
+  psignal(signum, "need to send ");
+  if (cont_thread > 0)
+    {
+      struct process_info *process;
+
+      process = get_thread_process (current_inferior);
+      kill (process->lwpid, signum);
+    }
+  else
+    kill (signal_pid, signum);
+}
+
+/* Copy LEN bytes from inferior's auxiliary vector starting at OFFSET
+   to debugger memory starting at MYADDR.  */
+
+static int
+linux_read_auxv (CORE_ADDR offset, char *myaddr, unsigned int len)
+{
+  char filename[PATH_MAX];
+  int fd, n;
+
+  TRACE_ENTER;
+  snprintf (filename, sizeof filename, "/proc/%d/auxv", inferior_pid);
+
+  fd = open (filename, O_RDONLY);
+  if (fd < 0)
+    return -1;
+
+  if (offset != (CORE_ADDR) 0
+      && lseek (fd, (off_t) offset, SEEK_SET) != (off_t) offset)
+    n = -1;
+  else
+    n = read (fd, myaddr, len);
+
+  close (fd);
+
+  return n;
+}
+
+
+static struct target_ops linux_xen_target_ops = {
+  linux_create_inferior,
+  linux_attach,
+  linux_kill,
+  linux_detach,
+  linux_thread_alive,
+  linux_resume,
+  linux_wait,
+  linux_fetch_registers,
+  linux_store_registers,
+  linux_read_memory,
+  linux_write_memory,
+  linux_look_up_symbols,
+  linux_send_signal,
+  linux_read_auxv,
+};
+
+static void
+linux_init_signals ()
+{
+  /* FIXME drow/2002-06-09: As above, we should check with LinuxThreads
+     to find what the cancel signal actually is.  */
+  signal (__SIGRTMIN+1, SIG_IGN);
+}
+
+void
+initialize_low (void)
+{
+
+  set_target_ops (&linux_xen_target_ops);
+  set_breakpoint_data (the_low_target.breakpoint,
+		       the_low_target.breakpoint_len);
+  init_registers ();
+  linux_init_signals ();
+  if (isfile) {
+      myptrace = xc_ptrace_core;
+      myxcwait = xc_waitdomain_core;
+  } else {
+      myptrace = xc_ptrace;
+      myxcwait = xc_waitdomain;
+  }
+
+}
diff --git a/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/server.c b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/server.c
new file mode 100644
index 0000000000..54f508a186
--- /dev/null
+++ b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/gdb/gdbserver/server.c
@@ -0,0 +1,639 @@
+/* Main code for remote server for GDB.
+   Copyright 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, 2004
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "server.h"
+
+#include <unistd.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int cont_thread;
+int general_thread;
+int step_thread;
+int thread_from_wait;
+int old_thread_from_wait;
+int extended_protocol;
+int server_waiting;
+int isfile = 0;
+
+jmp_buf toplevel;
+
+/* The PID of the originally created or attached inferior.  Used to
+   send signals to the process when GDB sends us an asynchronous interrupt
+   (user hitting Control-C in the client), and to wait for the child to exit
+   when no longer debugging it.  */
+
+int signal_pid;
+
+static unsigned char
+start_inferior (char *argv[], char *statusptr)
+{
+  signal (SIGTTOU, SIG_DFL);
+  signal (SIGTTIN, SIG_DFL);
+
+  signal_pid = create_inferior (argv[0], argv);
+
+  fprintf (stderr, "Process %s created; pid = %d\n", argv[0],
+	   signal_pid);
+
+  signal (SIGTTOU, SIG_IGN);
+  signal (SIGTTIN, SIG_IGN);
+  tcsetpgrp (fileno (stderr), signal_pid);
+
+  /* Wait till we are at 1st instruction in program, return signal number.  */
+  return mywait (statusptr, 0);
+}
+
+static int
+attach_inferior (int pid, char *statusptr, unsigned char *sigptr)
+{
+  /* myattach should return -1 if attaching is unsupported,
+     0 if it succeeded, and call error() otherwise.  */
+
+  if (myattach (pid) != 0)
+    return -1;
+
+  fprintf (stderr, "Attached; pid = %d\n", pid);
+
+  /* FIXME - It may be that we should get the SIGNAL_PID from the
+     attach function, so that it can be the main thread instead of
+     whichever we were told to attach to.  */
+  signal_pid = pid;
+
+  *sigptr = mywait (statusptr, 0);
+
+  return 0;
+}
+
+extern int remote_debug;
+
+/* Handle all of the extended 'q' packets.  */
+void
+handle_query (char *own_buf)
+{
+  static struct inferior_list_entry *thread_ptr;
+
+  if (strcmp ("qSymbol::", own_buf) == 0)
+    {
+      if (the_target->look_up_symbols != NULL)
+	(*the_target->look_up_symbols) ();
+
+      strcpy (own_buf, "OK");
+      return;
+    }
+
+  if (strcmp ("qfThreadInfo", own_buf) == 0)
+    {
+      thread_ptr = all_threads.head;
+      sprintf (own_buf, "m%x", thread_ptr->id);
+      thread_ptr = thread_ptr->next;
+      return;
+    }
+
+  if (strcmp ("qsThreadInfo", own_buf) == 0)
+    {
+      if (thread_ptr != NULL)
+	{
+	  sprintf (own_buf, "m%x", thread_ptr->id);
+	  thread_ptr = thread_ptr->next;
+	  return;
+	}
+      else
+	{
+	  sprintf (own_buf, "l");
+	  return;
+	}
+    }
+
+  if (the_target->read_auxv != NULL
+      && strncmp ("qPart:auxv:read::", own_buf, 17) == 0)
+    {
+      char data[(PBUFSIZ - 1) / 2];
+      CORE_ADDR ofs;
+      unsigned int len;
+      int n;
+      decode_m_packet (&own_buf[17], &ofs, &len); /* "OFS,LEN" */
+      if (len > sizeof data)
+	len = sizeof data;
+      n = (*the_target->read_auxv) (ofs, data, len);
+      if (n == 0)
+	write_ok (own_buf);
+      else if (n < 0)
+	write_enn (own_buf);
+      else
+	convert_int_to_ascii (data, own_buf, n);
+      return;
+    }
+
+  /* Otherwise we didn't know what packet it was.  Say we didn't
+     understand it.  */
+  own_buf[0] = 0;
+}
+
+/* Parse vCont packets.  */
+void
+handle_v_cont (char *own_buf, char *status, unsigned char *signal)
+{
+  char *p, *q;
+  int n = 0, i = 0;
+  struct thread_resume *resume_info, default_action;
+
+  /* Count the number of semicolons in the packet.  There should be one
+     for every action.  */
+  p = &own_buf[5];
+  while (p)
+    {
+      n++;
+      p++;
+      p = strchr (p, ';');
+    }
+  /* Allocate room for one extra action, for the default remain-stopped
+     behavior; if no default action is in the list, we'll need the extra
+     slot.  */
+  resume_info = malloc ((n + 1) * sizeof (resume_info[0]));
+
+  default_action.thread = -1;
+  default_action.leave_stopped = 1;
+  default_action.step = 0;
+  default_action.sig = 0;
+
+  p = &own_buf[5];
+  i = 0;
+  while (*p)
+    {
+      p++;
+
+      resume_info[i].leave_stopped = 0;
+
+      if (p[0] == 's' || p[0] == 'S')
+	resume_info[i].step = 1;
+      else if (p[0] == 'c' || p[0] == 'C')
+	resume_info[i].step = 0;
+      else
+	goto err;
+
+      if (p[0] == 'S' || p[0] == 'C')
+	{
+	  int sig;
+	  sig = strtol (p + 1, &q, 16);
+	  if (p == q)
+	    goto err;
+	  p = q;
+
+	  if (!target_signal_to_host_p (sig))
+	    goto err;
+	  resume_info[i].sig = target_signal_to_host (sig);
+	}
+      else
+	{
+	  resume_info[i].sig = 0;
+	  p = p + 1;
+	}
+
+      if (p[0] == 0)
+	{
+	  resume_info[i].thread = -1;
+	  default_action = resume_info[i];
+
+	  /* Note: we don't increment i here, we'll overwrite this entry
+	     the next time through.  */
+	}
+      else if (p[0] == ':')
+	{
+	  resume_info[i].thread = strtol (p + 1, &q, 16);
+	  if (p == q)
+	    goto err;
+	  p = q;
+	  if (p[0] != ';' && p[0] != 0)
+	    goto err;
+
+	  i++;
+	}
+    }
+
+  resume_info[i] = default_action;
+
+  /* Still used in occasional places in the backend.  */
+  if (n == 1 && resume_info[0].thread != -1)
+    cont_thread = resume_info[0].thread;
+  else
+    cont_thread = -1;
+  set_desired_inferior (0);
+
+  (*the_target->resume) (resume_info);
+
+  free (resume_info);
+
+  *signal = mywait (status, 1);
+  prepare_resume_reply (own_buf, *status, *signal);
+  return;
+
+err:
+  /* No other way to report an error... */
+  strcpy (own_buf, "");
+  free (resume_info);
+  return;
+}
+
+/* Handle all of the extended 'v' packets.  */
+void
+handle_v_requests (char *own_buf, char *status, unsigned char *signal)
+{
+  if (strncmp (own_buf, "vCont;", 6) == 0)
+    {
+      handle_v_cont (own_buf, status, signal);
+      return;
+    }
+
+  if (strncmp (own_buf, "vCont?", 6) == 0)
+    {
+      strcpy (own_buf, "vCont;c;C;s;S");
+      return;
+    }
+
+  /* Otherwise we didn't know what packet it was.  Say we didn't
+     understand it.  */
+  own_buf[0] = 0;
+  return;
+}
+
+void
+myresume (int step, int sig)
+{
+  struct thread_resume resume_info[2];
+  int n = 0;
+
+  if (step || sig || cont_thread > 0)
+    {
+      resume_info[0].thread
+	= ((struct inferior_list_entry *) current_inferior)->id;
+      resume_info[0].step = step;
+      resume_info[0].sig = sig;
+      resume_info[0].leave_stopped = 0;
+      n++;
+    }
+  resume_info[n].thread = -1;
+  resume_info[n].step = 0;
+  resume_info[n].sig = 0;
+  resume_info[n].leave_stopped = (cont_thread > 0);
+
+  (*the_target->resume) (resume_info);
+}
+
+static int attached;
+
+static void
+gdbserver_usage (void)
+{
+  error ("Usage:\tgdbserver COMM PROG [ARGS ...]\n"
+	 "\tgdbserver COMM --attach PID\n"
+	 "\tgdbserver COMM --file COREFILE\n"
+	 "\n"
+	 "COMM may either be a tty device (for serial debugging), or \n"
+	 "HOST:PORT to listen for a TCP connection.\n");
+}
+
+int
+main (int argc, char *argv[])
+{
+  char ch, status, *own_buf, mem_buf[2000];
+  int i = 0;
+  unsigned char signal;
+  unsigned int len;
+  CORE_ADDR mem_addr;
+  int bad_attach;
+  int pid;
+  char *arg_end;
+
+  if (setjmp (toplevel))
+    {
+      fprintf (stderr, "Exiting\n");
+      exit (1);
+    }
+
+  bad_attach = 0;
+  pid = 0;
+  attached = 0;
+  if (argc >= 3 && strcmp (argv[2], "--attach") == 0)
+    {
+      if (argc == 4
+	  && argv[3] != '\0'
+	  && (pid = strtoul (argv[3], &arg_end, 10)) != 0
+	  && *arg_end == '\0')
+	{
+	  ;
+	}
+      else
+	bad_attach = 1;
+    }
+  else if (argc >= 3 && strcmp (argv[2], "--file") == 0)
+    {
+      if (argc == 4
+	  && argv[3] != '\0')
+	{
+	  if ((pid = open(argv[3], O_RDONLY)) <= 0) 
+	    bad_attach = 1;
+	  else 
+	    isfile = 1;
+	}
+      else
+	bad_attach = 1;
+    }
+
+  if (argc < 3 || bad_attach)
+    gdbserver_usage();
+
+  initialize_low ();
+
+  own_buf = malloc (PBUFSIZ);
+
+  if (pid == 0)
+    {
+      /* Wait till we are at first instruction in program.  */
+      signal = start_inferior (&argv[2], &status);
+
+      /* We are now stopped at the first instruction of the target process */
+    }
+  else
+    {
+      switch (attach_inferior (pid, &status, &signal))
+	{
+	case -1:
+	  error ("Attaching not supported on this target");
+	  break;
+	default:
+	  attached = 1;
+	  break;
+	}
+    }
+
+  while (1)
+    {
+      remote_open (argv[1]);
+
+    restart:
+      setjmp (toplevel);
+      while (getpkt (own_buf) > 0)
+	{
+	  unsigned char sig;
+	  i = 0;
+	  ch = own_buf[i++];
+	  switch (ch)
+	    {
+	    case 'q':
+	      handle_query (own_buf);
+	      break;
+	    case 'd':
+	      remote_debug = !remote_debug;
+	      break;
+	    case 'D':
+	      fprintf (stderr, "Detaching from inferior\n");
+	      detach_inferior ();
+	      write_ok (own_buf);
+	      putpkt (own_buf);
+	      remote_close ();
+
+	      /* If we are attached, then we can exit.  Otherwise, we need to
+		 hang around doing nothing, until the child is gone.  */
+	      if (!attached)
+		{
+		  int status, ret;
+
+		  do {
+		    ret = waitpid (signal_pid, &status, 0);
+		    if (WIFEXITED (status) || WIFSIGNALED (status))
+		      break;
+		  } while (ret != -1 || errno != ECHILD);
+		}
+
+	      exit (0);
+
+	    case '!':
+	      if (attached == 0)
+		{
+		  extended_protocol = 1;
+		  prepare_resume_reply (own_buf, status, signal);
+		}
+	      else
+		{
+		  /* We can not use the extended protocol if we are
+		     attached, because we can not restart the running
+		     program.  So return unrecognized.  */
+		  own_buf[0] = '\0';
+		}
+	      break;
+	    case '?':
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 'H':
+	      switch (own_buf[1])
+		{
+		case 'g':
+		  general_thread = strtol (&own_buf[2], NULL, 16);
+		  write_ok (own_buf);
+		  set_desired_inferior (1);
+		  break;
+		case 'c':
+		  cont_thread = strtol (&own_buf[2], NULL, 16);
+		  write_ok (own_buf);
+		  break;
+		case 's':
+		  step_thread = strtol (&own_buf[2], NULL, 16);
+		  write_ok (own_buf);
+		  break;
+		default:
+		  /* Silently ignore it so that gdb can extend the protocol
+		     without compatibility headaches.  */
+		  own_buf[0] = '\0';
+		  break;
+		}
+	      break;
+	    case 'g':
+	      set_desired_inferior (1);
+	      registers_to_string (own_buf);
+	      break;
+	    case 'G':
+	      set_desired_inferior (1);
+	      registers_from_string (&own_buf[1]);
+	      write_ok (own_buf);
+	      break;
+	    case 'm':
+	      decode_m_packet (&own_buf[1], &mem_addr, &len);
+	      if (read_inferior_memory (mem_addr, mem_buf, len) == 0)
+		convert_int_to_ascii (mem_buf, own_buf, len);
+	      else
+		write_enn (own_buf);
+	      break;
+	    case 'M':
+	      decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf);
+	      if (write_inferior_memory (mem_addr, mem_buf, len) == 0)
+		write_ok (own_buf);
+	      else
+		write_enn (own_buf);
+	      break;
+	    case 'C':
+	      convert_ascii_to_int (own_buf + 1, &sig, 1);
+	      if (target_signal_to_host_p (sig))
+		signal = target_signal_to_host (sig);
+	      else
+		signal = 0;
+	      set_desired_inferior (0);
+	      myresume (0, signal);
+	      signal = mywait (&status, 1);
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 'S':
+	      convert_ascii_to_int (own_buf + 1, &sig, 1);
+	      if (target_signal_to_host_p (sig))
+		signal = target_signal_to_host (sig);
+	      else
+		signal = 0;
+	      set_desired_inferior (0);
+	      myresume (1, signal);
+	      signal = mywait (&status, 1);
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 'c':
+	      set_desired_inferior (0);
+	      myresume (0, 0);
+	      signal = mywait (&status, 1);
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 's':
+	      set_desired_inferior (0);
+	      myresume (1, 0);
+	      signal = mywait (&status, 1);
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 'k':
+	      fprintf (stderr, "Killing inferior\n");
+	      kill_inferior ();
+	      /* When using the extended protocol, we start up a new
+	         debugging session.   The traditional protocol will
+	         exit instead.  */
+	      if (extended_protocol)
+		{
+		  write_ok (own_buf);
+		  fprintf (stderr, "GDBserver restarting\n");
+
+		  /* Wait till we are at 1st instruction in prog.  */
+		  signal = start_inferior (&argv[2], &status);
+		  goto restart;
+		  break;
+		}
+	      else
+		{
+		  exit (0);
+		  break;
+		}
+	    case 'T':
+	      if (mythread_alive (strtol (&own_buf[1], NULL, 16)))
+		write_ok (own_buf);
+	      else
+		write_enn (own_buf);
+	      break;
+	    case 'R':
+	      /* Restarting the inferior is only supported in the
+	         extended protocol.  */
+	      if (extended_protocol)
+		{
+		  kill_inferior ();
+		  write_ok (own_buf);
+		  fprintf (stderr, "GDBserver restarting\n");
+
+		  /* Wait till we are at 1st instruction in prog.  */
+		  signal = start_inferior (&argv[2], &status);
+		  goto restart;
+		  break;
+		}
+	      else
+		{
+		  /* It is a request we don't understand.  Respond with an
+		     empty packet so that gdb knows that we don't support this
+		     request.  */
+		  own_buf[0] = '\0';
+		  break;
+		}
+	    case 'v':
+	      /* Extended (long) request.  */
+	      handle_v_requests (own_buf, &status, &signal);
+	      break;
+	    default:
+	      /* It is a request we don't understand.  Respond with an
+	         empty packet so that gdb knows that we don't support this
+	         request.  */
+	      own_buf[0] = '\0';
+	      break;
+	    }
+
+	  putpkt (own_buf);
+
+	  if (status == 'W')
+	    fprintf (stderr,
+		     "\nChild exited with status %d\n", signal);
+	  if (status == 'X')
+	    fprintf (stderr, "\nChild terminated with signal = 0x%x\n",
+		     signal);
+	  if (status == 'W' || status == 'X')
+	    {
+	      if (extended_protocol)
+		{
+		  fprintf (stderr, "Killing inferior\n");
+		  kill_inferior ();
+		  write_ok (own_buf);
+		  fprintf (stderr, "GDBserver restarting\n");
+
+		  /* Wait till we are at 1st instruction in prog.  */
+		  signal = start_inferior (&argv[2], &status);
+		  goto restart;
+		  break;
+		}
+	      else
+		{
+		  fprintf (stderr, "GDBserver exiting\n");
+		  exit (0);
+		}
+	    }
+	}
+
+      /* We come here when getpkt fails.
+
+         For the extended remote protocol we exit (and this is the only
+         way we gracefully exit!).
+
+         For the traditional remote protocol close the connection,
+         and re-open it at the top of the loop.  */
+      if (extended_protocol)
+	{
+	  remote_close ();
+	  exit (0);
+	}
+      else
+	{
+	  fprintf (stderr, "Remote side has terminated connection.  "
+			   "GDBserver will reopen the connection.\n");
+	  remote_close ();
+	}
+    }
+}
diff --git a/tools/debugger/gdb/gdb-6.2.1-xen-sparse/mkbuildtree b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/mkbuildtree
new file mode 100755
index 0000000000..6be1df1753
--- /dev/null
+++ b/tools/debugger/gdb/gdb-6.2.1-xen-sparse/mkbuildtree
@@ -0,0 +1,115 @@
+#!/bin/bash
+
+# mkbuildtree <build tree>
+#
+# Creates symbolic links in <build tree> for the sparse tree
+# in the current directory.
+
+# Script to determine the relative path between two directories.
+# Copyright (c) D. J. Hawkey Jr. 2002
+# Fixed for Xen project by K. Fraser in 2003.  
+abs_to_rel ()
+{
+	local CWD SRCPATH
+                
+	if [ "$1" != "/" -a "${1##*[^/]}" = "/" ]; then
+		SRCPATH=${1%?}
+	else
+		SRCPATH=$1
+	fi
+	if [ "$2" != "/" -a "${2##*[^/]}" = "/" ]; then
+		DESTPATH=${2%?}
+	else
+		DESTPATH=$2
+	fi
+
+	CWD=$PWD
+	[ "${1%%[^/]*}" != "/" ] && cd $1 && SRCPATH=$PWD
+	[ "${2%%[^/]*}" != "/" ] && cd $2 && DESTPATH=$PWD
+	[ "$CWD" != "$PWD" ] && cd $CWD
+
+	BASEPATH=$SRCPATH
+
+	[ "$SRCPATH" = "$DESTPATH" ] && DESTPATH="." && return
+	[ "$SRCPATH" = "/" ] && DESTPATH=${DESTPATH#?} && return
+
+	while [ "$BASEPATH/" != "${DESTPATH%${DESTPATH#$BASEPATH/}}" ]; do
+          BASEPATH=${BASEPATH%/*}
+	done
+
+	SRCPATH=${SRCPATH#$BASEPATH}
+        DESTPATH=${DESTPATH#$BASEPATH}
+        DESTPATH=${DESTPATH#?}
+	while [ -n "$SRCPATH" ]; do
+		SRCPATH=${SRCPATH%/*}
+		DESTPATH="../$DESTPATH"
+	done
+
+	[ -z "$BASEPATH" ] && BASEPATH="/"
+	[ "${DESTPATH##*[^/]}" = "/" ] && DESTPATH=${DESTPATH%?}
+}
+
+# relative_lndir <target_dir>
+# Creates a tree of symlinks in the current working directory that mirror
+# real files in <target_dir>. <target_dir> should be relative to the current
+# working directory. Symlinks in <target_dir> are ignored. Source-control files
+# are ignored.
+relative_lndir ()
+{
+  local SYMLINK_DIR REAL_DIR pref i j
+  SYMLINK_DIR=$PWD
+  REAL_DIR=$1
+  (
+  cd $REAL_DIR
+  for i in `find . -type d | grep -v SCCS`; do
+    [ -d $SYMLINK_DIR/$i ] || mkdir -p $SYMLINK_DIR/$i
+    (
+    cd $i
+    pref=`echo $i | sed -e 's#/[^/]*#../#g' -e 's#^\.##'`
+    for j in `find . -type f -o -type l -maxdepth 1`; do
+      ln -sf ${pref}${REAL_DIR}/$i/$j ${SYMLINK_DIR}/$i/$j
+    done
+    )
+  done
+  )
+}
+
+[ "$1" == "" ] && { echo "Syntax: $0 <linux tree to xenify>"; exit 1; }
+
+# Get absolute path to the destination directory
+pushd . >/dev/null
+cd ${1}
+AD=$PWD
+popd >/dev/null
+  
+# Get absolute path to the source directory
+AS=`pwd`
+
+# Get name of sparse directory
+SDN=$(basename $AS)
+
+# Get path to source, relative to destination
+abs_to_rel ${AD} ${AS}
+RS=$DESTPATH
+
+# We now work from the destination directory
+cd ${AD}
+
+# Remove old symlinks
+find sys -type l | while read f
+do
+  case $(readlink $f) in
+  */$SDN/*)
+    rm -f $f
+    ;;
+  esac
+done
+
+if [ -f ${AD}/BUILDING ]; then
+  # Create symlinks of files and directories which exist in the sparse source
+  (cd sys && relative_lndir ../${RS}/sys)
+else
+  # Create symlinks of files and directories which exist in the sparse source
+  relative_lndir ${RS}
+  rm -f mkbuildtree
+fi
diff --git a/tools/debugger/gdb/gdbbuild b/tools/debugger/gdb/gdbbuild
new file mode 100755
index 0000000000..1c1c9a0242
--- /dev/null
+++ b/tools/debugger/gdb/gdbbuild
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+XENROOT=`bk root`
+export XENROOT
+
+cd $XENROOT/tools/debugger/gdb
+rm -rf gdb-6.2.1  gdb-6.2.1-linux-i386-xen
+# FIXME:cw this should be smarter
+wget -c ftp://ftp.gnu.org/gnu/gdb/gdb-6.2.1.tar.bz2
+tar xjf gdb-6.2.1.tar.bz2
+
+cd $XENROOT/tools/debugger/gdb/gdb-6.2.1-xen-sparse
+./mkbuildtree ../gdb-6.2.1
+
+mkdir $XENROOT/tools/debugger/gdb/gdb-6.2.1-linux-i386-xen
+cd $XENROOT/tools/debugger/gdb/gdb-6.2.1-linux-i386-xen
+../gdb-6.2.1/configure
+# some people don't have gmake
+if which gmake ; then
+    gmake -j4
+else
+    make -j4
+fi
diff --git a/tools/debugger/libxendebug/Makefile b/tools/debugger/libxendebug/Makefile
new file mode 100644
index 0000000000..ed478658a4
--- /dev/null
+++ b/tools/debugger/libxendebug/Makefile
@@ -0,0 +1,72 @@
+
+INSTALL		= install
+INSTALL_PROG	= $(INSTALL) -m0755
+INSTALL_DATA	= $(INSTALL) -m0644
+INSTALL_DIR	= $(INSTALL) -d -m0755
+
+MAJOR    = 3.0
+MINOR    = 0
+
+CC       = gcc
+
+XEN_ROOT = ../../..
+include $(XEN_ROOT)/tools/Rules.mk
+
+SRCS     := xendebug.c
+
+CFLAGS   += -Wall -Werror -O3 -fno-strict-aliasing
+CFLAGS   += $(INCLUDES) -I. -I$(XEN_ROOT)/tools/libxc
+# Get gcc to generate the dependencies for us.
+CFLAGS   += -Wp,-MD,.$(@F).d
+DEPS     = .*.d
+
+LDFLAGS  += -L$(XEN_ROOT)/tools/libxc -lxc
+
+LIB_OBJS := $(patsubst %.c,%.o,$(SRCS))
+PIC_OBJS := $(patsubst %.c,%.opic,$(SRCS))
+
+LIB      := libxendebug.a libxendebug.so
+LIB      += libxendebug.so.$(MAJOR) libxendebug.so.$(MAJOR).$(MINOR)
+
+all: build
+build:
+	$(MAKE) $(LIB)
+
+install: build
+	[ -d $(DESTDIR)/usr/$(LIBDIR) ] || $(INSTALL_DIR) $(DESTDIR)/usr/$(LIBDIR)
+	[ -d $(DESTDIR)/usr/include ] || $(INSTALL_DIR) $(DESTDIR)/usr/include
+	$(INSTALL_PROG) libxendebug.so.$(MAJOR).$(MINOR) $(DESTDIR)/usr/$(LIBDIR)
+	$(INSTALL_DATA) libxendebug.a $(DESTDIR)/usr/$(LIBDIR)
+	ln -sf libxendebug.so.$(MAJOR).$(MINOR) $(DESTDIR)/usr/$(LIBDIR)/libxendebug.so.$(MAJOR)
+	ln -sf libxendebug.so.$(MAJOR) $(DESTDIR)/usr/$(LIBDIR)/libxendebug.so
+	$(INSTALL_DATA) xendebug.h $(DESTDIR)/usr/include
+
+.PHONY: TAGS clean rpm install all
+
+TAGS:
+	etags -t $(SRCS) *.h
+
+clean:
+	rm -rf *.a *.so* *.o *.opic *.rpm $(LIB) *~ $(DEPS) xen
+
+rpm: build
+	rm -rf staging
+	mkdir staging
+	mkdir staging/i386
+	rpmbuild --define "staging$$PWD/staging" --define '_builddir.' \
+		--define "_rpmdir$$PWD/staging" -bb rpm.spec
+	mv staging/i386/*.rpm .
+	rm -rf staging
+
+libxendebug.a: $(LIB_OBJS)
+	$(AR) rc $@ $^
+
+libxendebug.so: libxendebug.so.$(MAJOR)
+	ln -sf $< $@
+libxendebug.so.$(MAJOR): libxendebug.so.$(MAJOR).$(MINOR)
+	ln -sf $< $@
+
+libxendebug.so.$(MAJOR).$(MINOR): $(PIC_OBJS)
+	$(CC) $(CFLAGS) $(LDFLAGS) -Wl,-soname -Wl,libxendebug.so.$(MAJOR) -shared -o $@ $^
+
+-include $(DEPS)
diff --git a/tools/debugger/libxendebug/list.h b/tools/debugger/libxendebug/list.h
new file mode 100644
index 0000000000..d2ee720f34
--- /dev/null
+++ b/tools/debugger/libxendebug/list.h
@@ -0,0 +1,186 @@
+#ifndef _LINUX_LIST_H
+#define _LINUX_LIST_H
+
+/*
+ * Simple doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+	struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+	struct list_head name = LIST_HEAD_INIT(name)
+
+#define INIT_LIST_HEAD(ptr) do { \
+	(ptr)->next = (ptr); (ptr)->prev = (ptr); \
+} while (0)
+
+/*
+ * Insert a new entry between two known consecutive entries. 
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static __inline__ void __list_add(struct list_head * new,
+	struct list_head * prev,
+	struct list_head * next)
+{
+	next->prev = new;
+	new->next = next;
+	new->prev = prev;
+	prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static __inline__ void list_add(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head, head->next);
+}
+
+/**
+ * list_add_tail - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static __inline__ void list_add_tail(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head->prev, head);
+}
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static __inline__ void __list_del(struct list_head * prev,
+				  struct list_head * next)
+{
+	next->prev = prev;
+	prev->next = next;
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty on entry does not return true after this, the entry is in an undefined state.
+ */
+static __inline__ void list_del(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+}
+
+/**
+ * list_del_init - deletes entry from list and reinitialize it.
+ * @entry: the element to delete from the list.
+ */
+static __inline__ void list_del_init(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	INIT_LIST_HEAD(entry); 
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+static __inline__ int list_empty(struct list_head *head)
+{
+	return head->next == head;
+}
+
+/**
+ * list_splice - join two lists
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ */
+static __inline__ void list_splice(struct list_head *list, struct list_head *head)
+{
+	struct list_head *first = list->next;
+
+	if (first != list) {
+		struct list_head *last = list->prev;
+		struct list_head *at = head->next;
+
+		first->prev = head;
+		head->next = first;
+
+		last->next = at;
+		at->prev = last;
+	}
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr:	the &struct list_head pointer.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+	((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+
+/**
+ * list_for_each	-	iterate over a list
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @head:	the head for your list.
+ */
+#define list_for_each(pos, head) \
+	for (pos = (head)->next; pos != (head); pos = pos->next)
+        	
+/**
+ * list_for_each_safe	-	iterate over a list safe against removal of list entry
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_safe(pos, n, head) \
+	for (pos = (head)->next, n = pos->next; pos != (head); \
+		pos = n, n = pos->next)
+
+/**
+ * list_for_each_entry	-	iterate over list of given type
+ * @pos:	the type * to use as a loop counter.
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_for_each_entry(pos, head, member)				\
+	for (pos = list_entry((head)->next, typeof(*pos), member),	\
+		     prefetch(pos->member.next);			\
+	     &pos->member != (head); 					\
+	     pos = list_entry(pos->member.next, typeof(*pos), member),	\
+		     prefetch(pos->member.next))
+
+/**
+ * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @pos:	the type * to use as a loop counter.
+ * @n:		another type * to use as temporary storage
+ * @head:	the head for your list.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_safe(pos, n, head, member)			\
+	for (pos = list_entry((head)->next, typeof(*pos), member),	\
+		n = list_entry(pos->member.next, typeof(*pos), member);	\
+	     &pos->member != (head); 					\
+	     pos = n, n = list_entry(n->member.next, typeof(*n), member))
+#endif /* _LINUX_LIST_H */
+
diff --git a/tools/debugger/libxendebug/xendebug.c b/tools/debugger/libxendebug/xendebug.c
new file mode 100644
index 0000000000..844cdf0e03
--- /dev/null
+++ b/tools/debugger/libxendebug/xendebug.c
@@ -0,0 +1,599 @@
+/*
+ * xendebug.c
+ *
+ * alex ho
+ * http://www.cl.cam.ac.uk/netos/pdb
+ *
+ * xendebug_memory_page adapted from xc_ptrace.c
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <xc.h>
+#include "list.h"
+
+#if defined(__i386__)
+#define L1_PAGETABLE_SHIFT       12
+#define L2_PAGETABLE_SHIFT       22
+#elif defined(__x86_64__)
+#define L1_PAGETABLE_SHIFT      12
+#define L2_PAGETABLE_SHIFT      21
+#define L3_PAGETABLE_SHIFT      30
+#define L4_PAGETABLE_SHIFT      39
+#endif
+
+#define PAGE_SHIFT L1_PAGETABLE_SHIFT
+#define PAGE_SIZE  (1UL<<PAGE_SHIFT)
+#define PAGE_MASK  (~(PAGE_SIZE - 1))
+
+/* from xen/include/asm-x86/processor.h */
+#define X86_EFLAGS_TF	0x00000100 /* Trap Flag */
+
+typedef int boolean;
+#define true 1
+#define false 0
+
+
+typedef struct bwcpoint                           /* break/watch/catch point */
+{
+    struct list_head list;
+    memory_t address;
+    u32 domain;
+    u16 vcpu;
+    u8 old_value;                             /* old value for software bkpt */
+} bwcpoint_t, *bwcpoint_p;
+
+static bwcpoint_t bwcpoint_list;
+
+
+
+typedef struct domain_context                 /* local cache of domain state */
+{
+    struct list_head     list;
+    u32                  domid;
+    boolean              valid[MAX_VIRT_CPUS];
+    vcpu_guest_context_t context[MAX_VIRT_CPUS];
+
+    long            total_pages;
+    unsigned long  *page_array;
+
+    unsigned long   cr3_phys[MAX_VIRT_CPUS];
+    unsigned long  *cr3_virt[MAX_VIRT_CPUS];
+    unsigned long   pde_phys[MAX_VIRT_CPUS];     
+    unsigned long  *pde_virt[MAX_VIRT_CPUS];
+    unsigned long   page_phys[MAX_VIRT_CPUS];     
+    unsigned long  *page_virt[MAX_VIRT_CPUS];
+    int             page_perm[MAX_VIRT_CPUS];
+} domain_context_t, *domain_context_p;
+
+static domain_context_t domain_context_list;
+
+/* initialization */
+
+static boolean xendebug_initialized = false;
+
+static __inline__ void
+xendebug_initialize()
+{
+    if ( !xendebug_initialized )
+    {
+        memset((void *) &domain_context_list, 0, sizeof(domain_context_t));
+        INIT_LIST_HEAD(&domain_context_list.list);
+
+        memset((void *) &bwcpoint_list, 0, sizeof(bwcpoint_t));
+        INIT_LIST_HEAD(&bwcpoint_list.list);
+
+        xendebug_initialized = true;
+    }
+}
+
+/**************/
+
+static domain_context_p
+xendebug_domain_context_search (u32 domid)
+{
+    struct list_head *entry;
+    domain_context_p  ctxt;
+
+    list_for_each(entry, &domain_context_list.list)
+    {
+        ctxt = list_entry(entry, domain_context_t, list);
+        if ( domid == ctxt->domid )
+            return ctxt;
+    }
+    return (domain_context_p)NULL;
+}
+
+static __inline__ domain_context_p
+xendebug_get_context (int xc_handle, u32 domid, u32 vcpu)
+{
+    int rc;
+    domain_context_p ctxt;
+
+    xendebug_initialize();
+
+    if ( (ctxt = xendebug_domain_context_search(domid)) == NULL)
+        return NULL;
+
+    if ( !ctxt->valid[vcpu] )
+    {
+        if ( (rc = xc_domain_get_vcpu_context(xc_handle, domid, vcpu, 
+                                              &ctxt->context[vcpu])) )
+            return NULL;
+
+        ctxt->valid[vcpu] = true;
+    }
+
+    return ctxt;
+}
+
+static __inline__ int
+xendebug_set_context (int xc_handle, domain_context_p ctxt, u32 vcpu)
+{
+    dom0_op_t op;
+    int rc;
+
+    if ( !ctxt->valid[vcpu] )
+        return -EINVAL;
+
+    op.interface_version = DOM0_INTERFACE_VERSION;
+    op.cmd = DOM0_SETDOMAININFO;
+    op.u.setdomaininfo.domain = ctxt->domid;
+    op.u.setdomaininfo.vcpu = vcpu;
+    op.u.setdomaininfo.ctxt = &ctxt->context[vcpu];
+
+    if ( (rc = mlock(&ctxt->context[vcpu], sizeof(vcpu_guest_context_t))) )
+        return rc;
+
+    rc = xc_dom0_op(xc_handle, &op);
+    (void) munlock(&ctxt->context[vcpu], sizeof(vcpu_guest_context_t));
+
+    return rc;
+}
+
+/**************/
+
+int
+xendebug_attach(int xc_handle,
+                u32 domid,
+                u32 vcpu)
+{
+    domain_context_p ctxt;
+
+    xendebug_initialize();
+
+    if ( (ctxt = malloc(sizeof(domain_context_t))) == NULL )
+        return -1;
+    memset(ctxt, 0, sizeof(domain_context_t));
+    
+    ctxt->domid = domid;
+    list_add(&ctxt->list, &domain_context_list.list);
+
+    return xc_domain_pause(xc_handle, domid);
+}
+
+int
+xendebug_detach(int xc_handle,
+                u32 domid,
+                u32 vcpu)
+{
+    domain_context_p ctxt;
+    
+    xendebug_initialize();
+
+    if ( (ctxt = xendebug_domain_context_search (domid)) == NULL)
+        return -EINVAL;
+
+    list_del(&ctxt->list);
+
+    if ( ctxt->page_array ) free(ctxt->page_array);
+
+    free(ctxt);
+
+    return xc_domain_unpause(xc_handle, domid);
+}
+
+int
+xendebug_read_registers(int xc_handle,
+                        u32 domid,
+                        u32 vcpu,
+                        cpu_user_regs_t **regs)
+{
+    domain_context_p ctxt;
+    int rc = -1;
+
+    xendebug_initialize();
+
+    ctxt = xendebug_get_context(xc_handle, domid, vcpu);
+    if (ctxt)
+    {
+        *regs = &ctxt->context[vcpu].user_regs;
+        rc = 0;
+    }
+
+    return rc;
+}
+
+int
+xendebug_read_fpregisters (int xc_handle,
+                           u32 domid,
+                           u32 vcpu,
+                           char **regs)
+{
+    domain_context_p ctxt;
+    int rc = -1;
+
+    xendebug_initialize();
+
+    ctxt = xendebug_get_context(xc_handle, domid, vcpu);
+    if (ctxt)
+    {
+        *regs = ctxt->context[vcpu].fpu_ctxt.x;
+        rc = 0;
+    }
+
+    return rc;
+}
+
+int
+xendebug_write_registers(int xc_handle,
+                         u32 domid,
+                         u32 vcpu,
+                         cpu_user_regs_t *regs)
+{
+    domain_context_p ctxt;
+    int rc = -1;
+
+    xendebug_initialize();
+
+    ctxt = xendebug_get_context(xc_handle, domid, vcpu);
+    if (ctxt)
+    {
+        memcpy(&ctxt->context[vcpu].user_regs, regs, sizeof(cpu_user_regs_t));
+        rc = xendebug_set_context(xc_handle, ctxt, vcpu);
+    }
+    
+    return rc;
+}
+
+int
+xendebug_step(int xc_handle,
+              u32 domid,
+              u32 vcpu)
+{
+    domain_context_p ctxt;
+    int rc;
+
+    xendebug_initialize();
+
+    ctxt = xendebug_get_context(xc_handle, domid, vcpu);
+    if (!ctxt) return -EINVAL;
+
+    ctxt->context[vcpu].user_regs.eflags |= X86_EFLAGS_TF;
+
+    if ( (rc = xendebug_set_context(xc_handle, ctxt, vcpu)) )
+        return rc;
+
+    ctxt->valid[vcpu] = false;
+    return xc_domain_unpause(xc_handle, domid);
+}
+
+int
+xendebug_continue(int xc_handle,
+                  u32 domid,
+                  u32 vcpu)
+{
+    domain_context_p ctxt;
+    int rc;
+
+    xendebug_initialize();
+
+    ctxt = xendebug_get_context(xc_handle, domid, vcpu);
+    if (!ctxt) return -EINVAL;
+
+    if ( ctxt->context[vcpu].user_regs.eflags & X86_EFLAGS_TF )
+    {
+        ctxt->context[vcpu].user_regs.eflags &= ~X86_EFLAGS_TF;
+        if ( (rc = xendebug_set_context(xc_handle, ctxt, vcpu)) )
+            return rc;
+    }
+    ctxt->valid[vcpu] = false;
+    return xc_domain_unpause(xc_handle, domid);
+}
+
+/*************************************************/
+
+#define vtopdi(va) ((va) >> L2_PAGETABLE_SHIFT)
+#define vtopti(va) (((va) >> PAGE_SHIFT) & 0x3ff)
+
+/* access to one page */
+static int
+xendebug_memory_page (domain_context_p ctxt, int xc_handle, u32 vcpu,
+                      int protection, memory_t address, int length, u8 *buffer)
+{
+    vcpu_guest_context_t *vcpu_ctxt = &ctxt->context[vcpu];
+    unsigned long pde, page;
+    unsigned long va = (unsigned long)address;
+    void *ptr;
+    long pages;
+
+    pages = xc_get_tot_pages(xc_handle, ctxt->domid);
+
+    if ( ctxt->total_pages != pages )
+    {
+        if ( ctxt->total_pages > 0 ) free( ctxt->page_array );
+        ctxt->total_pages = pages;
+
+        ctxt->page_array = malloc(pages * sizeof(unsigned long));
+        if ( ctxt->page_array == NULL )
+        {
+            printf("Could not allocate memory\n");
+            return 0;
+        }
+
+        if ( xc_get_pfn_list(xc_handle, ctxt->domid, ctxt->page_array,pages) !=
+                pages )
+        {
+            printf("Could not get the page frame list\n");
+            return 0;
+        }
+    }
+
+    if ( vcpu_ctxt->pt_base != ctxt->cr3_phys[vcpu]) 
+    {
+        ctxt->cr3_phys[vcpu] = vcpu_ctxt->pt_base;
+        if ( ctxt->cr3_virt[vcpu] )
+            munmap(ctxt->cr3_virt[vcpu], PAGE_SIZE);
+        ctxt->cr3_virt[vcpu] = xc_map_foreign_range(xc_handle, ctxt->domid,
+                    PAGE_SIZE, PROT_READ, ctxt->cr3_phys[vcpu] >> PAGE_SHIFT);
+        if ( ctxt->cr3_virt[vcpu] == NULL )
+            return 0;
+    } 
+
+
+    if ( (pde = ctxt->cr3_virt[vcpu][vtopdi(va)]) == 0) /* logical address */
+        return 0;
+    if (ctxt->context[vcpu].flags & VGCF_VMX_GUEST)
+        pde = ctxt->page_array[pde >> PAGE_SHIFT] << PAGE_SHIFT;
+    if (pde != ctxt->pde_phys[vcpu]) 
+    {
+        ctxt->pde_phys[vcpu] = pde;
+        if ( ctxt->pde_virt[vcpu])
+            munmap(ctxt->pde_virt[vcpu], PAGE_SIZE);
+        ctxt->pde_virt[vcpu] = xc_map_foreign_range(xc_handle, ctxt->domid,
+                    PAGE_SIZE, PROT_READ, ctxt->pde_phys[vcpu] >> PAGE_SHIFT);
+        if ( ctxt->pde_virt[vcpu] == NULL )
+            return 0;
+    }
+
+    if ((page = ctxt->pde_virt[vcpu][vtopti(va)]) == 0) /* logical address */
+        return 0;
+    if (ctxt->context[vcpu].flags & VGCF_VMX_GUEST)
+        page = ctxt->page_array[page >> PAGE_SHIFT] << PAGE_SHIFT;
+    if (page != ctxt->page_phys[vcpu] || protection != ctxt->page_perm[vcpu]) 
+    {
+        ctxt->page_phys[vcpu] = page;
+        if (ctxt->page_virt[vcpu])
+            munmap(ctxt->page_virt[vcpu], PAGE_SIZE);
+        ctxt->page_virt[vcpu] = xc_map_foreign_range(xc_handle, ctxt->domid, 
+                  PAGE_SIZE, protection, ctxt->page_phys[vcpu] >> PAGE_SHIFT);
+        if ( ctxt->page_virt[vcpu] == NULL )
+        {
+            printf("cr3 %lx pde %lx page %lx pti %lx\n", 
+                   vcpu_ctxt->pt_base, pde, page, vtopti(va));
+            ctxt->page_phys[vcpu] = 0;
+            return 0;
+        }
+        ctxt->page_perm[vcpu] = protection;
+    }	
+
+    ptr = (void *)( (unsigned long)ctxt->page_virt[vcpu] |
+                    (va & ~PAGE_MASK) );
+
+    if ( protection & PROT_WRITE )
+    {
+        memcpy(ptr, buffer, length);
+    }
+    else
+    {
+        memcpy(buffer, ptr, length);
+    }
+
+    return length;
+}
+
+/* divide a memory operation into accesses to individual pages */
+static int
+xendebug_memory_op (domain_context_p ctxt, int xc_handle, u32 vcpu,
+                    int protection, memory_t address, int length, u8 *buffer)
+{
+    int      remain;              /* number of bytes to touch past this page */
+    int      bytes   = 0;
+
+    while ( (remain = (address + length - 1) - (address | (PAGE_SIZE-1))) > 0)
+    {
+        bytes += xendebug_memory_page(ctxt, xc_handle, vcpu, protection,
+                                      address, length - remain, buffer);
+        buffer += (length - remain);
+        length = remain;
+        address = (address | (PAGE_SIZE - 1)) + 1;
+    }
+
+    bytes += xendebug_memory_page(ctxt, xc_handle, vcpu, protection,
+                                  address, length, buffer);
+
+    return bytes;
+}
+
+int
+xendebug_read_memory(int xc_handle,
+                     u32 domid,
+                     u32 vcpu,
+                     memory_t address,
+                     u32 length,
+                     u8 *data)
+{
+    domain_context_p ctxt;
+
+    xendebug_initialize();
+
+    ctxt = xendebug_get_context(xc_handle, domid, vcpu);
+
+    xendebug_memory_op(ctxt, xc_handle, vcpu, PROT_READ, 
+                       address, length, data);
+
+    return 0;
+}
+
+int
+xendebug_write_memory(int xc_handle,
+                      u32 domid,
+                      u32 vcpu,
+                      memory_t address,
+                      u32 length,
+                      u8 *data)
+{
+    domain_context_p ctxt;
+
+    xendebug_initialize();
+
+    ctxt = xendebug_get_context(xc_handle, domid, vcpu);
+    xendebug_memory_op(ctxt, xc_handle, vcpu, PROT_READ | PROT_WRITE,
+
+                       address, length, data);
+
+    return 0;
+}
+
+int
+xendebug_insert_memory_breakpoint(int xc_handle,
+                                  u32 domid,
+                                  u32 vcpu,
+                                  memory_t address,
+                                  u32 length)
+{
+    bwcpoint_p bkpt;
+    u8 breakpoint_opcode = 0xcc;
+
+    printf("insert breakpoint %d:%lx %d\n",
+            domid, address, length);
+
+    xendebug_initialize();
+
+    bkpt = malloc(sizeof(bwcpoint_t));
+    if ( bkpt == NULL )
+    {
+        printf("error: breakpoint length should be 1\n");
+        return -1;
+    }
+
+    if ( length != 1 )
+    {
+        printf("error: breakpoint length should be 1\n");
+        free(bkpt);
+        return -1;
+    }
+
+    bkpt->address = address;
+    bkpt->domain  = domid;
+
+    xendebug_read_memory(xc_handle, domid, vcpu, address, 1,
+                         &bkpt->old_value);
+
+    xendebug_write_memory(xc_handle, domid, vcpu, address, 1, 
+                          &breakpoint_opcode);
+    
+    list_add(&bkpt->list, &bwcpoint_list.list);
+
+    printf("breakpoint_set %d:%lx 0x%x\n",
+           domid, address, bkpt->old_value);
+
+    return 0;
+}
+
+int
+xendebug_remove_memory_breakpoint(int xc_handle,
+                                  u32 domid,
+                                  u32 vcpu,
+                                  memory_t address,
+                                  u32 length)
+{
+    bwcpoint_p bkpt = NULL;
+
+    printf ("remove breakpoint %d:%lx\n",
+            domid, address);
+
+    struct list_head *entry;
+    list_for_each(entry, &bwcpoint_list.list)
+    {
+        bkpt = list_entry(entry, bwcpoint_t, list);
+        if ( domid == bkpt->domain && address == bkpt->address )
+            break;
+    }
+    
+    if (bkpt == &bwcpoint_list || bkpt == NULL)
+    {
+        printf ("error: no breakpoint found\n");
+        return -1;
+    }
+
+    list_del(&bkpt->list);
+
+    xendebug_write_memory(xc_handle, domid, vcpu, address, 1, 
+                          &bkpt->old_value);
+
+    free(bkpt);
+    return 0;
+}
+
+int
+xendebug_query_domain_stop(int xc_handle, int *dom_list, int dom_list_size)
+{
+    xc_dominfo_t *info;
+    u32 first_dom = 0;
+    int max_doms = 1024;
+    int nr_doms, loop;
+    int count = 0;
+
+    if ( (info = malloc(max_doms * sizeof(xc_dominfo_t))) == NULL )
+        return -ENOMEM;
+
+    nr_doms = xc_domain_getinfo(xc_handle, first_dom, max_doms, info);
+
+    for (loop = 0; loop < nr_doms; loop++)
+    {
+        printf ("domid: %d", info[loop].domid);
+        printf (" %c%c%c%c%c%c",
+                info[loop].dying ? 'D' : '-',
+                info[loop].crashed ? 'C' : '-',
+                info[loop].shutdown ? 'S' : '-',
+                info[loop].paused ? 'P' : '-',
+                info[loop].blocked ? 'B' : '-',
+                info[loop].running ? 'R' : '-');
+        printf (" pages: %ld, vcpus %d", 
+                info[loop].nr_pages, info[loop].vcpus);
+        printf ("\n");
+
+        if ( info[loop].paused && count < dom_list_size)
+        {
+            dom_list[count++] = info[loop].domid;
+        }
+    }
+
+    free(info);
+
+    return count;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/debugger/libxendebug/xendebug.h b/tools/debugger/libxendebug/xendebug.h
new file mode 100644
index 0000000000..66a45104ba
--- /dev/null
+++ b/tools/debugger/libxendebug/xendebug.h
@@ -0,0 +1,78 @@
+/*
+ * xendebug.h
+ *
+ * alex ho
+ * http://www.cl.cam.ac.uk/netos/pdb
+ *
+ */
+
+#ifndef _XENDEBUG_H_DEFINED
+#define _XENDEBUG_H_DEFINED
+
+#include <xc.h>
+
+int xendebug_attach(int xc_handle,
+		    u32 domid,
+		    u32 vcpu);
+
+int xendebug_detach(int xc_handle,
+		    u32 domid,
+		    u32 vcpu);
+
+int xendebug_read_registers(int xc_handle,
+			    u32 domid,
+			    u32 vcpu,
+			    cpu_user_regs_t **regs);
+
+int xendebug_read_fpregisters (int xc_handle,
+			       u32 domid,
+			       u32 vcpu,
+			       char **regs);
+
+int xendebug_write_registers(int xc_handle,
+			     u32 domid,
+			     u32 vcpu,
+			     cpu_user_regs_t *regs);
+
+int xendebug_step(int xc_handle,
+		  u32 domid,
+		  u32 vcpu);
+
+int xendebug_continue(int xc_handle,
+		      u32 domid,
+		      u32 vcpu);
+
+int xendebug_read_memory(int xc_handle,
+			 u32 domid,
+			 u32 vcpu,
+			 memory_t address,
+			 u32 length,
+			 u8 *data);
+
+
+int xendebug_write_memory(int xc_handle,
+			  u32 domid,
+			  u32 vcpu,
+			  memory_t address,
+			  u32 length,
+			  u8 *data);
+
+
+int xendebug_insert_memory_breakpoint(int xc_handle,
+				      u32 domid,
+				      u32 vcpu,
+				      memory_t address,
+				      u32 length);
+
+int xendebug_remove_memory_breakpoint(int xc_handle,
+				      u32 domid,
+				      u32 vcpu,
+				      memory_t address,
+				      u32 length);
+
+int xendebug_query_domain_stop(int xc_handle,
+			       int *dom_list, 
+			       int dom_list_size);
+
+
+#endif /* _XENDEBUG_H_DEFINED */
diff --git a/tools/debugger/pdb/Domain.ml b/tools/debugger/pdb/Domain.ml
new file mode 100644
index 0000000000..700699a958
--- /dev/null
+++ b/tools/debugger/pdb/Domain.ml
@@ -0,0 +1,63 @@
+(** Domain.ml
+ *
+ *  domain context implementation
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+open Int32
+open Intel
+
+type context_t =
+{
+  mutable domain : int;
+  mutable execution_domain : int
+}
+
+let default_context = { domain = 0; execution_domain = 0 }
+
+let new_context dom exec_dom = {domain = dom; execution_domain = exec_dom}
+
+let set_domain ctx value =
+  ctx.domain <- value;
+  print_endline (Printf.sprintf "ctx.domain <- %d" ctx.domain)
+
+let set_execution_domain ctx value =
+  ctx.execution_domain <- value;
+  print_endline (Printf.sprintf "ctx.execution_domain <- %d"
+		 ctx.execution_domain)
+
+let get_domain ctx =
+  ctx.domain
+
+let get_execution_domain ctx =
+  ctx.execution_domain
+
+let string_of_context ctx =
+      Printf.sprintf "{domain} domain: %d, execution_domain: %d"
+                      ctx.domain  ctx.execution_domain
+
+external read_registers : context_t -> registers = "read_registers"
+external write_register : context_t -> register -> int32 -> unit =
+  "write_register"
+external read_memory : context_t -> int32 -> int -> int list = 
+  "read_memory"
+external write_memory : context_t -> int32 -> int list -> unit = 
+  "write_memory"
+	
+external continue : context_t -> unit = "continue_target"
+external step : context_t -> unit = "step_target"
+
+external insert_memory_breakpoint : context_t -> int32 -> int -> unit = 
+  "insert_memory_breakpoint"
+external remove_memory_breakpoint : context_t -> int32 -> int -> unit = 
+  "remove_memory_breakpoint"
+
+external attach_debugger : int -> int -> unit = "attach_debugger"
+external detach_debugger : int -> int -> unit = "detach_debugger"
+external pause_target : int -> unit = "pause_target"
+
+let pause ctx =
+  pause_target ctx.domain
diff --git a/tools/debugger/pdb/Domain.mli b/tools/debugger/pdb/Domain.mli
new file mode 100644
index 0000000000..456d19489d
--- /dev/null
+++ b/tools/debugger/pdb/Domain.mli
@@ -0,0 +1,38 @@
+(** Domain.mli
+ *
+ *  domain context interface
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+open Int32
+open Intel
+
+type context_t
+
+val default_context : context_t
+val new_context : int -> int -> context_t 
+
+val set_domain : context_t -> int -> unit
+val get_domain : context_t -> int
+val set_execution_domain : context_t -> int -> unit
+val get_execution_domain : context_t -> int
+
+val string_of_context : context_t -> string
+
+val read_registers : context_t -> registers
+val write_register : context_t -> register -> int32 -> unit
+val read_memory : context_t -> int32 -> int -> int list
+val write_memory : context_t -> int32 -> int list -> unit
+	
+val continue : context_t -> unit
+val step : context_t -> unit
+
+val insert_memory_breakpoint : context_t -> int32 -> int -> unit
+val remove_memory_breakpoint : context_t -> int32 -> int -> unit
+
+val attach_debugger : int -> int -> unit
+val detach_debugger : int -> int -> unit
+val pause : context_t -> unit
diff --git a/tools/debugger/pdb/Intel.ml b/tools/debugger/pdb/Intel.ml
new file mode 100644
index 0000000000..d82ef8b527
--- /dev/null
+++ b/tools/debugger/pdb/Intel.ml
@@ -0,0 +1,71 @@
+(** Intel.ml
+ *
+ *  various sundry Intel x86 definitions
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+
+type register =
+  | EBX
+  | ECX
+  | EDX
+  | ESI
+  | EDI
+  | EBP
+  | EAX
+  | Error_code
+  | Entry_vector
+  | EIP
+  | CS
+  | EFLAGS
+  | ESP
+  | SS
+  | ES
+  | DS
+  | FS
+  | GS
+
+type registers =
+    { ebx : int32;
+      ecx : int32;
+      edx : int32;
+      esi : int32;
+      edi : int32;
+      ebp : int32;
+      eax : int32;
+      error_code : int32;
+      entry_vector : int32;
+      eip : int32;
+      cs : int32;
+      eflags : int32;
+      esp : int32;
+      ss : int32;
+      es : int32;
+      ds : int32;
+      fs : int32;
+      gs : int32
+    }
+
+let null_registers =
+  { ebx = 0l;
+    ecx = 0l;
+    edx = 0l;
+    esi = 0l;
+    edi = 0l;
+    ebp = 0l;
+    eax = 0l;
+    error_code = 0l;
+    entry_vector = 0l;
+    eip = 0l;
+    cs = 0l;
+    eflags = 0l;
+    esp = 0l;
+    ss = 0l;
+    es = 0l;
+    ds = 0l;
+    fs = 0l;
+    gs = 0l
+  }
diff --git a/tools/debugger/pdb/Makefile b/tools/debugger/pdb/Makefile
new file mode 100644
index 0000000000..579c7da12c
--- /dev/null
+++ b/tools/debugger/pdb/Makefile
@@ -0,0 +1,56 @@
+OCAMLMAKEFILE = OCamlMakefile
+
+XEN_ROOT    = ../../..
+include $(XEN_ROOT)/tools/Rules.mk
+
+# overwrite LDFLAGS from xen/tool/Rules.mk
+# otherwise, ocamlmktop gets confused.
+LDFLAGS     =
+
+OCAML_ROOT=/usr/local
+# force ocaml 3.08
+# OCAML_ROOT  = /anfs/nos1/ach61/ocaml
+
+OCAMLC      = $(OCAML_ROOT)/bin/ocamlc
+OCAMLMKTOP  = $(OCAML_ROOT)/bin/ocamlmktop
+OCAMLLIBPATH= $(OCAML_ROOT)/lib/ocaml
+
+INCLUDES   += -I $(XEN_XC)
+INCLUDES   += -I $(XEN_LIBXC)
+INCLUDES   += -I ../libxendebug
+INCLUDES   += -I $(OCAML_ROOT)/lib/ocaml
+
+CFLAGS     += $(INCLUDES)
+CFLAGS     += -Wall
+CFLAGS     += -Werror
+CFLAGS     += -g
+
+CLIBS      += xc
+CLIBS      += xendebug
+CLIBS      += pdb
+
+LIBDIRS    += $(XEN_LIBXC)
+LIBDIRS    += $(XEN_LIBXUTIL)
+LIBDIRS    += ../libxendebug
+LIBDIRS    += .
+
+LIBS       += unix str
+
+PRE_TARGETS = libpdb.a
+
+all : bc
+
+libpdb.a : pdb_xen.o
+	ar rc $@ $^
+	ranlib $@
+
+SOURCES    += pdb_caml_xc.c pdb_xen.c
+SOURCES    += Util.ml Intel.ml 
+SOURCES    += evtchn.ml evtchn.mli
+SOURCES    += Domain.ml  Process.ml
+SOURCES    += Domain.mli Process.mli
+SOURCES    += PDB.ml debugger.ml server.ml
+RESULT      = pdb
+
+include $(OCAMLMAKEFILE)
+
diff --git a/tools/debugger/pdb/OCamlMakefile b/tools/debugger/pdb/OCamlMakefile
new file mode 100644
index 0000000000..0c6d23ab00
--- /dev/null
+++ b/tools/debugger/pdb/OCamlMakefile
@@ -0,0 +1,1149 @@
+###########################################################################
+#                              OCamlMakefile
+#                  Copyright (C) 1999-2004  Markus Mottl
+#
+#                             For updates see:
+#                http://www.oefai.at/~markus/ocaml_sources
+#
+#        $Id: OCamlMakefile,v 1.1 2005/05/19 09:30:48 root Exp $
+#
+###########################################################################
+
+# Modified by damien for .glade.ml compilation
+
+# Set these variables to the names of the sources to be processed and
+# the result variable. Order matters during linkage!
+
+ifndef SOURCES
+  SOURCES := foo.ml
+endif
+export SOURCES
+
+ifndef RES_CLIB_SUF
+  RES_CLIB_SUF := _stubs
+endif
+export RES_CLIB_SUF
+
+ifndef RESULT
+  RESULT := foo
+endif
+export RESULT
+
+export LIB_PACK_NAME
+
+ifndef DOC_FILES
+  DOC_FILES := $(filter %.mli, $(SOURCES))
+endif
+export DOC_FILES
+
+export BCSUFFIX
+export NCSUFFIX
+
+ifndef TOPSUFFIX
+  TOPSUFFIX := .top
+endif
+export TOPSUFFIX
+
+# Eventually set include- and library-paths, libraries to link,
+# additional compilation-, link- and ocamlyacc-flags
+# Path- and library information needs not be written with "-I" and such...
+# Define THREADS if you need it, otherwise leave it unset (same for
+# USE_CAMLP4)!
+
+export THREADS
+export VMTHREADS
+export ANNOTATE
+export USE_CAMLP4
+
+export INCDIRS
+export LIBDIRS
+export EXTLIBDIRS
+export RESULTDEPS
+export OCAML_DEFAULT_DIRS
+
+export LIBS
+export CLIBS
+
+export OCAMLFLAGS
+export OCAMLNCFLAGS
+export OCAMLBCFLAGS
+
+export OCAMLLDFLAGS
+export OCAMLNLDFLAGS
+export OCAMLBLDFLAGS
+
+ifndef OCAMLCPFLAGS
+  OCAMLCPFLAGS := a
+endif
+
+export OCAMLCPFLAGS
+
+export PPFLAGS
+
+export YFLAGS
+export IDLFLAGS
+
+export OCAMLDOCFLAGS
+
+export OCAMLFIND_INSTFLAGS
+
+export DVIPSFLAGS
+
+export STATIC
+
+# Add a list of optional trash files that should be deleted by "make clean"
+export TRASH
+
+####################  variables depending on your OCaml-installation
+
+ifdef MINGW
+  export MINGW
+  WIN32   := 1
+  CFLAGS_WIN32 := -mno-cygwin
+endif
+ifdef MSVC
+  export MSVC
+  WIN32   := 1
+  ifndef STATIC
+    CPPFLAGS_WIN32 := -DCAML_DLL
+  endif
+  CFLAGS_WIN32 += -nologo
+  EXT_OBJ := obj
+  EXT_LIB := lib
+  ifeq ($(CC),gcc)
+    # work around GNU Make default value
+    ifdef THREADS
+      CC := cl -MT
+    else
+      CC := cl
+    endif
+  endif
+  ifeq ($(CXX),g++)
+    # work around GNU Make default value
+    CXX := $(CC)
+  endif
+  CFLAG_O := -Fo
+endif
+ifdef WIN32
+  EXT_CXX := cpp
+  EXE     := .exe
+endif
+
+ifndef EXT_OBJ
+  EXT_OBJ := o
+endif
+ifndef EXT_LIB
+  EXT_LIB := a
+endif
+ifndef EXT_CXX
+  EXT_CXX := cc
+endif
+ifndef EXE
+  EXE := # empty
+endif
+ifndef CFLAG_O
+  CFLAG_O := -o # do not delete this comment (preserves trailing whitespace)!
+endif
+
+export CC
+export CXX
+export CFLAGS
+export CXXFLAGS
+export LDFLAGS
+export CPPFLAGS
+
+ifndef RPATH_FLAG
+  RPATH_FLAG := -R
+endif
+export RPATH_FLAG
+
+ifndef MSVC
+ifndef PIC_CFLAGS
+  PIC_CFLAGS := -fPIC
+endif
+ifndef PIC_CPPFLAGS
+  PIC_CPPFLAGS := -DPIC
+endif
+endif
+
+export PIC_CFLAGS
+export PIC_CPPFLAGS
+
+BCRESULT  := $(addsuffix $(BCSUFFIX), $(RESULT))
+NCRESULT  := $(addsuffix $(NCSUFFIX), $(RESULT))
+TOPRESULT := $(addsuffix $(TOPSUFFIX), $(RESULT))
+
+ifndef OCAMLFIND
+  OCAMLFIND := ocamlfind
+endif
+export OCAMLFIND
+
+ifndef OCAMLC
+  OCAMLC := ocamlc
+endif
+export OCAMLC
+
+ifndef OCAMLOPT
+  OCAMLOPT := ocamlopt
+endif
+export OCAMLOPT
+
+ifndef OCAMLMKTOP
+  OCAMLMKTOP := ocamlmktop
+endif
+export OCAMLMKTOP
+
+ifndef OCAMLCP
+  OCAMLCP := ocamlcp
+endif
+export OCAMLCP
+
+ifndef OCAMLDEP
+  OCAMLDEP := ocamldep
+endif
+export OCAMLDEP
+
+ifndef OCAMLLEX
+  OCAMLLEX := ocamllex
+endif
+export OCAMLLEX
+
+ifndef OCAMLYACC
+  OCAMLYACC := ocamlyacc
+endif
+export OCAMLYACC
+
+ifndef OCAMLMKLIB
+  OCAMLMKLIB := ocamlmklib
+endif
+export OCAMLMKLIB
+
+ifndef OCAML_GLADECC
+  OCAML_GLADECC := lablgladecc2
+endif
+export OCAML_GLADECC
+
+ifndef OCAML_GLADECC_FLAGS
+  OCAML_GLADECC_FLAGS :=
+endif
+export OCAML_GLADECC_FLAGS
+
+ifndef CAMELEON_REPORT
+  CAMELEON_REPORT := report
+endif
+export CAMELEON_REPORT
+
+ifndef CAMELEON_REPORT_FLAGS
+  CAMELEON_REPORT_FLAGS :=
+endif
+export CAMELEON_REPORT_FLAGS
+
+ifndef CAMELEON_ZOGGY
+  CAMELEON_ZOGGY := camlp4o pa_zog.cma pr_o.cmo
+endif
+export CAMELEON_ZOGGY
+
+ifndef CAMELEON_ZOGGY_FLAGS
+  CAMELEON_ZOGGY_FLAGS :=
+endif
+export CAMELEON_ZOGGY_FLAGS
+
+ifndef OXRIDL
+  OXRIDL := oxridl
+endif
+export OXRIDL
+
+ifndef CAMLIDL
+  CAMLIDL := camlidl
+endif
+export CAMLIDL
+
+ifndef CAMLIDLDLL
+  CAMLIDLDLL := camlidldll
+endif
+export CAMLIDLDLL
+
+ifndef NOIDLHEADER
+  MAYBE_IDL_HEADER := -header
+endif
+export NOIDLHEADER
+
+export NO_CUSTOM
+
+ifndef CAMLP4
+  CAMLP4 := camlp4
+endif
+export CAMLP4
+
+ifndef REAL_OCAMLFIND
+  ifdef PACKS
+    ifndef CREATE_LIB
+      ifdef THREADS
+	PACKS += threads
+      endif
+    endif
+    empty :=
+    space := $(empty) $(empty)
+    comma := ,
+    ifdef PREDS
+      PRE_OCAML_FIND_PREDICATES := $(subst $(space),$(comma),$(PREDS))
+      PRE_OCAML_FIND_PACKAGES := $(subst $(space),$(comma),$(PACKS))
+      OCAML_FIND_PREDICATES := -predicates $(PRE_OCAML_FIND_PREDICATES)
+  #    OCAML_DEP_PREDICATES := -syntax $(PRE_OCAML_FIND_PREDICATES)
+      OCAML_FIND_PACKAGES := $(OCAML_FIND_PREDICATES) -package $(PRE_OCAML_FIND_PACKAGES)
+      OCAML_DEP_PACKAGES := $(OCAML_DEP_PREDICATES) -package $(PRE_OCAML_FIND_PACKAGES)
+    else
+      OCAML_FIND_PACKAGES := -package $(subst $(space),$(comma),$(PACKS))
+      OCAML_DEP_PACKAGES :=
+    endif
+    OCAML_FIND_LINKPKG := -linkpkg
+    REAL_OCAMLFIND := $(OCAMLFIND)
+  endif
+endif
+
+export OCAML_FIND_PACKAGES
+export OCAML_DEP_PACKAGES
+export OCAML_FIND_LINKPKG
+export REAL_OCAMLFIND
+
+ifndef OCAMLDOC
+  OCAMLDOC := ocamldoc
+endif
+export OCAMLDOC
+
+ifndef LATEX
+  LATEX := latex
+endif
+export LATEX
+
+ifndef DVIPS
+  DVIPS := dvips
+endif
+export DVIPS
+
+ifndef PS2PDF
+  PS2PDF := ps2pdf
+endif
+export PS2PDF
+
+ifndef OCAMLMAKEFILE
+  OCAMLMAKEFILE := OCamlMakefile
+endif
+export OCAMLMAKEFILE
+
+ifndef OCAMLLIBPATH
+  OCAMLLIBPATH := \
+    $(shell $(OCAMLC) 2>/dev/null -where || echo /usr/local/lib/ocaml)
+endif
+export OCAMLLIBPATH
+
+ifndef OCAML_LIB_INSTALL
+  OCAML_LIB_INSTALL := $(OCAMLLIBPATH)/contrib
+endif
+export OCAML_LIB_INSTALL
+
+###########################################################################
+
+####################  change following sections only if
+####################    you know what you are doing!
+
+# delete target files when a build command fails
+.PHONY: .DELETE_ON_ERROR
+.DELETE_ON_ERROR:
+
+# for pedants using "--warn-undefined-variables"
+export MAYBE_IDL
+export REAL_RESULT
+export CAMLIDLFLAGS
+export THREAD_FLAG
+export RES_CLIB
+export MAKEDLL
+export ANNOT_FLAG
+export C_OXRIDL
+export SUBPROJS
+export CFLAGS_WIN32
+export CPPFLAGS_WIN32
+
+INCFLAGS :=
+
+SHELL := /bin/sh
+
+MLDEPDIR := ._d
+BCDIDIR  := ._bcdi
+NCDIDIR  := ._ncdi
+
+FILTER_EXTNS := %.mli %.ml %.mll %.mly %.idl %.oxridl %.c %.$(EXT_CXX) %.rep %.zog %.glade
+
+FILTERED     := $(filter $(FILTER_EXTNS), $(SOURCES))
+SOURCE_DIRS  := $(filter-out ./, $(sort $(dir $(FILTERED))))
+
+FILTERED_REP := $(filter %.rep, $(FILTERED))
+DEP_REP      := $(FILTERED_REP:%.rep=$(MLDEPDIR)/%.d)
+AUTO_REP     := $(FILTERED_REP:.rep=.ml)
+
+FILTERED_ZOG := $(filter %.zog, $(FILTERED))
+DEP_ZOG      := $(FILTERED_ZOG:%.zog=$(MLDEPDIR)/%.d)
+AUTO_ZOG     := $(FILTERED_ZOG:.zog=.ml)
+
+FILTERED_GLADE := $(filter %.glade, $(FILTERED))
+DEP_GLADE      := $(FILTERED_GLADE:%.glade=$(MLDEPDIR)/%.d)
+AUTO_GLADE     := $(FILTERED_GLADE:.glade=.ml)
+
+FILTERED_ML  := $(filter %.ml, $(FILTERED))
+DEP_ML       := $(FILTERED_ML:%.ml=$(MLDEPDIR)/%.d)
+
+FILTERED_MLI := $(filter %.mli, $(FILTERED))
+DEP_MLI      := $(FILTERED_MLI:.mli=.di)
+
+FILTERED_MLL := $(filter %.mll, $(FILTERED))
+DEP_MLL      := $(FILTERED_MLL:%.mll=$(MLDEPDIR)/%.d)
+AUTO_MLL     := $(FILTERED_MLL:.mll=.ml)
+
+FILTERED_MLY := $(filter %.mly, $(FILTERED))
+DEP_MLY      := $(FILTERED_MLY:%.mly=$(MLDEPDIR)/%.d) $(FILTERED_MLY:.mly=.di)
+AUTO_MLY     := $(FILTERED_MLY:.mly=.mli) $(FILTERED_MLY:.mly=.ml)
+
+FILTERED_IDL := $(filter %.idl, $(FILTERED))
+DEP_IDL      := $(FILTERED_IDL:%.idl=$(MLDEPDIR)/%.d) $(FILTERED_IDL:.idl=.di)
+C_IDL        := $(FILTERED_IDL:%.idl=%_stubs.c)
+ifndef NOIDLHEADER
+ C_IDL += $(FILTERED_IDL:.idl=.h)
+endif
+OBJ_C_IDL    := $(FILTERED_IDL:%.idl=%_stubs.$(EXT_OBJ))
+AUTO_IDL     := $(FILTERED_IDL:.idl=.mli) $(FILTERED_IDL:.idl=.ml) $(C_IDL)
+
+FILTERED_OXRIDL := $(filter %.oxridl, $(FILTERED))
+DEP_OXRIDL      := $(FILTERED_OXRIDL:%.oxridl=$(MLDEPDIR)/%.d) $(FILTERED_OXRIDL:.oxridl=.di)
+AUTO_OXRIDL     := $(FILTERED_OXRIDL:.oxridl=.mli) $(FILTERED_OXRIDL:.oxridl=.ml) $(C_OXRIDL)
+
+FILTERED_C_CXX := $(filter %.c %.$(EXT_CXX), $(FILTERED))
+OBJ_C_CXX      := $(FILTERED_C_CXX:.c=.$(EXT_OBJ))
+OBJ_C_CXX      := $(OBJ_C_CXX:.$(EXT_CXX)=.$(EXT_OBJ))
+
+PRE_TARGETS  += $(AUTO_MLL) $(AUTO_MLY) $(AUTO_IDL) $(AUTO_OXRIDL) $(AUTO_ZOG) $(AUTO_REP) $(AUTO_GLADE)
+
+ALL_DEPS     := $(DEP_ML) $(DEP_MLI) $(DEP_MLL) $(DEP_MLY) $(DEP_IDL) $(DEP_OXRIDL) $(DEP_ZOG) $(DEP_REP) $(DEP_GLADE)
+
+MLDEPS       := $(filter %.d, $(ALL_DEPS))
+MLIDEPS      := $(filter %.di, $(ALL_DEPS))
+BCDEPIS      := $(MLIDEPS:%.di=$(BCDIDIR)/%.di)
+NCDEPIS      := $(MLIDEPS:%.di=$(NCDIDIR)/%.di)
+
+ALLML        := $(filter %.mli %.ml %.mll %.mly %.idl %.oxridl %.rep %.zog %.glade, $(FILTERED))
+
+IMPLO_INTF   := $(ALLML:%.mli=%.mli.__)
+IMPLO_INTF   := $(foreach file, $(IMPLO_INTF), \
+                  $(basename $(file)).cmi $(basename $(file)).cmo)
+IMPLO_INTF   := $(filter-out %.mli.cmo, $(IMPLO_INTF))
+IMPLO_INTF   := $(IMPLO_INTF:%.mli.cmi=%.cmi)
+
+IMPLX_INTF   := $(IMPLO_INTF:.cmo=.cmx)
+
+INTF         := $(filter %.cmi, $(IMPLO_INTF))
+IMPL_CMO     := $(filter %.cmo, $(IMPLO_INTF))
+IMPL_CMX     := $(IMPL_CMO:.cmo=.cmx)
+IMPL_ASM     := $(IMPL_CMO:.cmo=.asm)
+IMPL_S       := $(IMPL_CMO:.cmo=.s)
+
+OBJ_LINK     := $(OBJ_C_IDL) $(OBJ_C_CXX)
+OBJ_FILES    := $(IMPL_CMO:.cmo=.$(EXT_OBJ)) $(OBJ_LINK)
+
+EXECS        := $(addsuffix $(EXE), \
+                            $(sort $(TOPRESULT) $(BCRESULT) $(NCRESULT)))
+ifdef WIN32
+  EXECS      += $(BCRESULT).dll $(NCRESULT).dll
+endif
+
+CLIB_BASE    := $(RESULT)$(RES_CLIB_SUF)
+ifneq ($(strip $(OBJ_LINK)),)
+  RES_CLIB     := lib$(CLIB_BASE).$(EXT_LIB)
+endif
+
+ifdef WIN32
+DLLSONAME := $(CLIB_BASE).dll
+else
+DLLSONAME := dll$(CLIB_BASE).so
+endif
+
+NONEXECS     := $(INTF) $(IMPL_CMO) $(IMPL_CMX) $(IMPL_ASM) $(IMPL_S) \
+		$(OBJ_FILES) $(PRE_TARGETS) $(BCRESULT).cma $(NCRESULT).cmxa \
+		$(NCRESULT).$(EXT_LIB) $(BCRESULT).cmi $(BCRESULT).cmo \
+		$(NCRESULT).cmi $(NCRESULT).cmx $(NCRESULT).o \
+		$(RES_CLIB) $(IMPL_CMO:.cmo=.annot) \
+		$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmo $(LIB_PACK_NAME).cmx $(LIB_PACK_NAME).o
+
+ifndef STATIC
+  NONEXECS += $(DLLSONAME)
+endif
+
+ifndef LIBINSTALL_FILES
+  LIBINSTALL_FILES := $(RESULT).mli $(RESULT).cmi $(RESULT).cma \
+		      $(RESULT).cmxa $(RESULT).$(EXT_LIB) $(RES_CLIB)
+  ifndef STATIC
+    ifneq ($(strip $(OBJ_LINK)),)
+      LIBINSTALL_FILES += $(DLLSONAME)
+    endif
+  endif
+endif
+
+export LIBINSTALL_FILES
+
+ifdef WIN32
+  # some extra stuff is created while linking DLLs
+  NONEXECS   += $(BCRESULT).$(EXT_LIB) $(BCRESULT).exp $(NCRESULT).exp $(CLIB_BASE).exp $(CLIB_BASE).lib
+endif
+
+TARGETS      := $(EXECS) $(NONEXECS)
+
+# If there are IDL-files
+ifneq ($(strip $(FILTERED_IDL)),)
+  MAYBE_IDL := -cclib -lcamlidl
+endif
+
+ifdef USE_CAMLP4
+  CAMLP4PATH := \
+    $(shell $(CAMLP4) -where 2>/dev/null || echo /usr/local/lib/camlp4)
+  INCFLAGS := -I $(CAMLP4PATH)
+  CINCFLAGS := -I$(CAMLP4PATH)
+endif
+
+DINCFLAGS := $(INCFLAGS) $(SOURCE_DIRS:%=-I %) $(OCAML_DEFAULT_DIRS:%=-I %)
+INCFLAGS := $(DINCFLAGS) $(INCDIRS:%=-I %)
+CINCFLAGS += $(SOURCE_DIRS:%=-I%) $(INCDIRS:%=-I%) $(OCAML_DEFAULT_DIRS:%=-I%)
+
+ifndef MSVC
+CLIBFLAGS += $(SOURCE_DIRS:%=-L%) $(LIBDIRS:%=-L%) \
+             $(EXTLIBDIRS:%=-L%) $(EXTLIBDIRS:%=-Wl,$(RPATH_FLAG)%) \
+             $(OCAML_DEFAULT_DIRS:%=-L%)
+endif
+
+ifndef PROFILING
+  INTF_OCAMLC := $(OCAMLC)
+else
+  ifndef THREADS
+    INTF_OCAMLC := $(OCAMLCP) -p $(OCAMLCPFLAGS)
+  else
+    # OCaml does not support profiling byte code
+    # with threads (yet), therefore we force an error.
+    ifndef REAL_OCAMLC
+      $(error Profiling of multithreaded byte code not yet supported by OCaml)
+    endif
+    INTF_OCAMLC := $(OCAMLC)
+  endif
+endif
+
+ifndef MSVC
+COMMON_LDFLAGS := $(LDFLAGS:%=-ccopt %) $(SOURCE_DIRS:%=-ccopt -L%) \
+		  $(LIBDIRS:%=-ccopt -L%) $(EXTLIBDIRS:%=-ccopt -L%) \
+		  $(EXTLIBDIRS:%=-ccopt -Wl,$(RPATH_FLAG)%) \
+		  $(OCAML_DEFAULT_DIRS:%=-ccopt -L%)
+else
+COMMON_LDFLAGS := -ccopt "/link -NODEFAULTLIB:LIBC $(LDFLAGS:%=%) $(SOURCE_DIRS:%=-LIBPATH:%) \
+		  $(LIBDIRS:%=-LIBPATH:%) $(EXTLIBDIRS:%=-LIBPATH:%) \
+		  $(OCAML_DEFAULT_DIRS:%=-LIBPATH:%) "
+endif
+
+CLIBS_OPTS := $(CLIBS:%=-cclib -l%)
+ifdef MSVC
+  ifndef STATIC
+  # MSVC libraries do not have 'lib' prefix
+  CLIBS_OPTS := $(CLIBS:%=-cclib %.lib)
+  endif
+endif
+
+ifneq ($(strip $(OBJ_LINK)),)
+  ifdef CREATE_LIB
+    OBJS_LIBS := -cclib -l$(CLIB_BASE) $(CLIBS_OPTS) $(MAYBE_IDL)
+  else
+    OBJS_LIBS := $(OBJ_LINK) $(CLIBS_OPTS) $(MAYBE_IDL)
+  endif
+else
+  OBJS_LIBS := $(CLIBS_OPTS) $(MAYBE_IDL)
+endif
+
+# If we have to make byte-code
+ifndef REAL_OCAMLC
+  BYTE_OCAML := y
+
+  # EXTRADEPS is added dependencies we have to insert for all
+  # executable files we generate.  Ideally it should be all of the
+  # libraries we use, but it's hard to find the ones that get searched on
+  # the path since I don't know the paths built into the compiler, so
+  # just include the ones with slashes in their names.
+  EXTRADEPS := $(addsuffix .cma,$(foreach i,$(LIBS),$(if $(findstring /,$(i)),$(i))))
+  SPECIAL_OCAMLFLAGS := $(OCAMLBCFLAGS)
+
+  REAL_OCAMLC := $(INTF_OCAMLC)
+
+  REAL_IMPL := $(IMPL_CMO)
+  REAL_IMPL_INTF := $(IMPLO_INTF)
+  IMPL_SUF := .cmo
+
+  DEPFLAGS  :=
+  MAKE_DEPS := $(MLDEPS) $(BCDEPIS)
+
+  ifdef CREATE_LIB
+    CFLAGS := $(PIC_CFLAGS) $(CFLAGS)
+    CPPFLAGS := $(PIC_CPPFLAGS) $(CPPFLAGS)
+    ifndef STATIC
+      ifneq ($(strip $(OBJ_LINK)),)
+	MAKEDLL := $(DLLSONAME)
+	ALL_LDFLAGS := -dllib $(DLLSONAME)
+      endif
+    endif
+  endif
+
+  ifndef NO_CUSTOM
+    ifneq "$(strip $(OBJ_LINK) $(THREADS) $(MAYBE_IDL) $(CLIBS))" ""
+      ALL_LDFLAGS += -custom
+    endif
+  endif
+
+  ALL_LDFLAGS += $(INCFLAGS) $(OCAMLLDFLAGS) $(OCAMLBLDFLAGS) \
+                 $(COMMON_LDFLAGS) $(LIBS:%=%.cma)
+  CAMLIDLDLLFLAGS :=
+
+  ifdef THREADS
+    ifdef VMTHREADS
+      THREAD_FLAG := -vmthread
+    else
+      THREAD_FLAG := -thread
+    endif
+    ALL_LDFLAGS := $(THREAD_FLAG) $(ALL_LDFLAGS)
+    ifndef CREATE_LIB
+      ifndef REAL_OCAMLFIND
+        ALL_LDFLAGS := unix.cma threads.cma $(ALL_LDFLAGS)
+      endif
+    endif
+  endif
+
+# we have to make native-code
+else
+  EXTRADEPS := $(addsuffix .cmxa,$(foreach i,$(LIBS),$(if $(findstring /,$(i)),$(i))))
+  ifndef PROFILING
+    SPECIAL_OCAMLFLAGS := $(OCAMLNCFLAGS)
+    PLDFLAGS :=
+  else
+    SPECIAL_OCAMLFLAGS := -p $(OCAMLNCFLAGS)
+    PLDFLAGS := -p
+  endif
+
+  REAL_IMPL := $(IMPL_CMX)
+  REAL_IMPL_INTF := $(IMPLX_INTF)
+  IMPL_SUF := .cmx
+
+  CPPFLAGS := -DNATIVE_CODE $(CPPFLAGS)
+
+  DEPFLAGS  := -native
+  MAKE_DEPS := $(MLDEPS) $(NCDEPIS)
+
+  ALL_LDFLAGS := $(PLDFLAGS) $(INCFLAGS) $(OCAMLLDFLAGS) \
+                 $(OCAMLNLDFLAGS) $(COMMON_LDFLAGS)
+  CAMLIDLDLLFLAGS := -opt
+
+  ifndef CREATE_LIB
+    ALL_LDFLAGS += $(LIBS:%=%.cmxa)
+  else
+    CFLAGS := $(PIC_CFLAGS) $(CFLAGS)
+    CPPFLAGS := $(PIC_CPPFLAGS) $(CPPFLAGS)
+  endif
+
+  ifdef THREADS
+    THREAD_FLAG := -thread
+    ALL_LDFLAGS := $(THREAD_FLAG) $(ALL_LDFLAGS)
+    ifndef CREATE_LIB
+      ifndef REAL_OCAMLFIND
+        ALL_LDFLAGS := unix.cmxa threads.cmxa $(ALL_LDFLAGS)
+      endif
+    endif
+  endif
+endif
+
+export MAKE_DEPS
+
+ifdef ANNOTATE
+  ANNOT_FLAG := -dtypes
+else
+endif
+
+ALL_OCAMLCFLAGS := $(THREAD_FLAG) $(ANNOT_FLAG) $(OCAMLFLAGS) \
+                   $(INCFLAGS) $(SPECIAL_OCAMLFLAGS)
+
+ifdef make_deps
+  -include $(MAKE_DEPS)
+  PRE_TARGETS :=
+endif
+
+###########################################################################
+# USER RULES
+
+# Call "OCamlMakefile QUIET=" to get rid of all of the @'s.
+QUIET=@
+
+# generates byte-code (default)
+byte-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT) \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes
+bc:	byte-code
+
+byte-code-nolink:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) nolink \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes
+bcnl:	byte-code-nolink
+
+top:			$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(TOPRESULT) \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes
+
+# generates native-code
+
+native-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(NCRESULT) \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				make_deps=yes
+nc:	native-code
+
+native-code-nolink:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) nolink \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				make_deps=yes
+ncnl:	native-code-nolink
+
+# generates byte-code libraries
+byte-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).cma \
+				REAL_RESULT="$(BCRESULT)" \
+				CREATE_LIB=yes \
+				make_deps=yes
+bcl:	byte-code-library
+
+# generates native-code libraries
+native-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(NCRESULT).cmxa \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				CREATE_LIB=yes \
+				make_deps=yes
+ncl:	native-code-library
+
+ifdef WIN32
+# generates byte-code dll
+byte-code-dll:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).dll \
+				REAL_RESULT="$(BCRESULT)" \
+				make_deps=yes
+bcd:	byte-code-dll
+
+# generates native-code dll
+native-code-dll:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(NCRESULT).dll \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				make_deps=yes
+ncd:	native-code-dll
+endif
+
+# generates byte-code with debugging information
+debug-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT) \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes \
+				OCAMLFLAGS="-g $(OCAMLFLAGS)" \
+				OCAMLLDFLAGS="-g $(OCAMLLDFLAGS)"
+dc:	debug-code
+
+debug-code-nolink:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) nolink \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes \
+				OCAMLFLAGS="-g $(OCAMLFLAGS)" \
+				OCAMLLDFLAGS="-g $(OCAMLLDFLAGS)"
+dcnl:	debug-code-nolink
+
+# generates byte-code libraries with debugging information
+debug-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).cma \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes \
+				CREATE_LIB=yes \
+				OCAMLFLAGS="-g $(OCAMLFLAGS)" \
+				OCAMLLDFLAGS="-g $(OCAMLLDFLAGS)"
+dcl:	debug-code-library
+
+# generates byte-code for profiling
+profiling-byte-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT) \
+				REAL_RESULT="$(BCRESULT)" PROFILING="y" \
+				make_deps=yes
+pbc:	profiling-byte-code
+
+# generates native-code
+
+profiling-native-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(NCRESULT) \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				PROFILING="y" \
+				make_deps=yes
+pnc:	profiling-native-code
+
+# generates byte-code libraries
+profiling-byte-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).cma \
+				REAL_RESULT="$(BCRESULT)" PROFILING="y" \
+				CREATE_LIB=yes \
+				make_deps=yes
+pbcl:	profiling-byte-code-library
+
+# generates native-code libraries
+profiling-native-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(NCRESULT).cmxa \
+				REAL_RESULT="$(NCRESULT)" PROFILING="y" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				CREATE_LIB=yes \
+				make_deps=yes
+pncl:	profiling-native-code-library
+
+# packs byte-code objects
+pack-byte-code:			$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT).cmo \
+				REAL_RESULT="$(BCRESULT)" \
+				PACK_LIB=yes make_deps=yes
+pabc:	pack-byte-code
+
+# packs native-code objects
+pack-native-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(NCRESULT).cmx $(NCRESULT).o \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				PACK_LIB=yes make_deps=yes
+panc:	pack-native-code
+
+# generates HTML-documentation
+htdoc:	doc/$(RESULT)/html
+
+# generates Latex-documentation
+ladoc:	doc/$(RESULT)/latex
+
+# generates PostScript-documentation
+psdoc:	doc/$(RESULT)/latex/doc.ps
+
+# generates PDF-documentation
+pdfdoc:	doc/$(RESULT)/latex/doc.pdf
+
+# generates all supported forms of documentation
+doc: htdoc ladoc psdoc pdfdoc
+
+###########################################################################
+# LOW LEVEL RULES
+
+$(REAL_RESULT):		$(REAL_IMPL_INTF) $(OBJ_LINK) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) \
+				$(OCAML_FIND_PACKAGES) $(OCAML_FIND_LINKPKG) \
+				$(ALL_LDFLAGS) $(OBJS_LIBS) -o $@$(EXE) \
+				$(REAL_IMPL)
+
+nolink:			$(REAL_IMPL_INTF) $(OBJ_LINK)
+
+ifdef WIN32
+$(REAL_RESULT).dll:	$(REAL_IMPL_INTF) $(OBJ_LINK)
+			$(CAMLIDLDLL) $(CAMLIDLDLLFLAGS) $(OBJ_LINK) $(CLIBS) \
+				-o $@ $(REAL_IMPL)
+endif
+
+%$(TOPSUFFIX):		$(REAL_IMPL_INTF) $(OBJ_LINK) $(EXTRADEPS)
+			$(REAL_OCAMLFIND) $(OCAMLMKTOP) \
+				$(OCAML_FIND_PACKAGES) $(OCAML_FIND_LINKPKG) \
+				$(ALL_LDFLAGS) $(OBJS_LIBS) -o $@$(EXE) \
+				$(REAL_IMPL)
+
+.SUFFIXES:		.mli .ml .cmi .cmo .cmx .cma .cmxa .$(EXT_OBJ) \
+                        .mly .di .d .$(EXT_LIB) .idl %.oxridl .c .$(EXT_CXX) .h .so \
+                        .rep .zog .glade
+
+ifndef STATIC
+ifdef MINGW
+$(DLLSONAME):		$(OBJ_LINK)
+			$(CC) $(CFLAGS) $(CFLAGS_WIN32) $(OBJ_LINK) -shared -o $@ \
+			-Wl,--whole-archive $(wildcard $(foreach dir,$(LIBDIRS),$(CLIBS:%=$(dir)/lib%.a))) \
+			 $(OCAMLLIBPATH)/ocamlrun.a \
+			-Wl,--export-all-symbols \
+			-Wl,--no-whole-archive
+else
+ifdef MSVC
+$(DLLSONAME):		$(OBJ_LINK)
+			link /NOLOGO /DLL /OUT:$@ $(OBJ_LINK) \
+			 $(wildcard $(foreach dir,$(LIBDIRS),$(CLIBS:%=$(dir)/%.lib))) \
+			 $(OCAMLLIBPATH)/ocamlrun.lib
+
+else
+$(DLLSONAME):		$(OBJ_LINK)
+			$(OCAMLMKLIB) $(INCFLAGS) $(CLIBFLAGS) \
+				-o $(CLIB_BASE) $(OBJ_LINK) $(CLIBS:%=-l%) \
+				$(OCAMLMKLIB_FLAGS)
+endif
+endif
+endif
+
+ifndef LIB_PACK_NAME
+$(RESULT).cma:		$(REAL_IMPL_INTF) $(MAKEDLL) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -a $(ALL_LDFLAGS) \
+				$(OBJS_LIBS) -o $@ $(OCAMLBLDFLAGS) $(REAL_IMPL)
+
+$(RESULT).cmxa $(RESULT).$(EXT_LIB):	$(REAL_IMPL_INTF) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(OCAMLOPT) -a $(ALL_LDFLAGS) $(OBJS_LIBS) \
+				$(OCAMLNLDFLAGS) -o $@ $(REAL_IMPL)
+else
+ifdef BYTE_OCAML
+$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmo: $(REAL_IMPL_INTF)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -pack -o $(LIB_PACK_NAME).cmo $(REAL_IMPL)
+else
+$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmx: $(REAL_IMPL_INTF)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -pack -o $(LIB_PACK_NAME).cmx $(REAL_IMPL)
+endif
+
+$(RESULT).cma:		$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmo $(MAKEDLL) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -a $(ALL_LDFLAGS) \
+				$(OBJS_LIBS) -o $@ $(OCAMLBLDFLAGS) $(LIB_PACK_NAME).cmo
+
+$(RESULT).cmxa $(RESULT).$(EXT_LIB):	$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmx $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(OCAMLOPT) -a $(ALL_LDFLAGS) $(OBJS_LIBS) \
+				$(OCAMLNLDFLAGS) -o $@ $(LIB_PACK_NAME).cmx
+endif
+
+$(RES_CLIB): 		$(OBJ_LINK)
+ifndef MSVC
+  ifneq ($(strip $(OBJ_LINK)),)
+		      $(AR) rcs $@ $(OBJ_LINK)
+  endif
+else
+  ifneq ($(strip $(OBJ_LINK)),)
+			lib -nologo -debugtype:cv -out:$(RES_CLIB) $(OBJ_LINK)
+  endif
+endif
+
+.mli.cmi: $(EXTRADEPS)
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  echo $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			  $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			else \
+			    echo $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp \"$$pp $(PPFLAGS)\" $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			    $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp "$$pp $(PPFLAGS)" $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			fi
+
+.ml.cmi .ml.$(EXT_OBJ) .ml.cmx .ml.cmo: $(EXTRADEPS)
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  echo $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(ALL_OCAMLCFLAGS) $<; \
+			  $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(ALL_OCAMLCFLAGS) $<; \
+			else \
+			  echo $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp \"$$pp $(PPFLAGS)\" $(ALL_OCAMLCFLAGS) $<; \
+			  $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp "$$pp $(PPFLAGS)" $(ALL_OCAMLCFLAGS) $<; \
+			fi
+
+ifdef PACK_LIB
+$(REAL_RESULT).cmo $(REAL_RESULT).cmx $(REAL_RESULT).o: $(REAL_IMPL_INTF) $(OBJ_LINK) $(EXTRADEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -pack $(ALL_LDFLAGS) \
+				$(OBJS_LIBS) -o $@ $(REAL_IMPL)
+endif
+
+.PRECIOUS:		%.ml
+%.ml:			%.mll
+			$(OCAMLLEX) $<
+
+.PRECIOUS:              %.ml %.mli
+%.ml %.mli:             %.mly
+			$(OCAMLYACC) $(YFLAGS) $<
+			$(QUIET)pp=`sed -n -e 's/.*(\*pp \([^*]*\) \*).*/\1/p;q' $<`; \
+			if [ ! -z "$$pp" ]; then \
+			  mv $*.ml $*.ml.temporary; \
+			  echo "(*pp $$pp $(PPFLAGS)*)" > $*.ml; \
+			  cat $*.ml.temporary >> $*.ml; \
+			  rm $*.ml.temporary; \
+			  mv $*.mli $*.mli.temporary; \
+			  echo "(*pp $$pp $(PPFLAGS)*)" > $*.mli; \
+			  cat $*.mli.temporary >> $*.mli; \
+			  rm $*.mli.temporary; \
+			fi
+
+
+.PRECIOUS:		%.ml
+%.ml:			%.rep
+			$(CAMELEON_REPORT) $(CAMELEON_REPORT_FLAGS) -gen $<
+
+.PRECIOUS:		%.ml
+%.ml:			%.zog
+			$(CAMELEON_ZOGGY)  $(CAMELEON_ZOGGY_FLAGS) -impl $< > $@
+
+.PRECIOUS:		%.ml
+%.ml:			%.glade
+			$(OCAML_GLADECC)  $(OCAML_GLADECC_FLAGS) $< > $@
+
+.PRECIOUS:		%.ml %.mli
+%.ml %.mli:		%.oxridl
+			$(OXRIDL) $<
+
+.PRECIOUS:		%.ml %.mli %_stubs.c %.h
+%.ml %.mli %_stubs.c %.h:		%.idl
+			$(CAMLIDL) $(MAYBE_IDL_HEADER) $(IDLFLAGS) \
+				$(CAMLIDLFLAGS) $<
+			$(QUIET)if [ $(NOIDLHEADER) ]; then touch $*.h; fi
+
+.c.$(EXT_OBJ):
+			$(OCAMLC) -c -cc "$(CC)" -ccopt "$(CFLAGS) \
+				$(CPPFLAGS) $(CPPFLAGS_WIN32) \
+				$(CFLAGS_WIN32) $(CINCFLAGS) $(CFLAG_O)$@ " $< 
+
+.$(EXT_CXX).$(EXT_OBJ):
+			$(CXX) -c $(CXXFLAGS) $(CINCFLAGS) $(CPPFLAGS) \
+				-I'$(OCAMLLIBPATH)' \
+				$< $(CFLAG_O)$@
+
+$(MLDEPDIR)/%.d:	%.ml
+			$(QUIET)echo making $@ from $<
+			$(QUIET)if [ ! -d $(@D) ]; then mkdir -p $(@D); fi
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(OCAML_DEP_PACKAGES) \
+				$(DINCFLAGS) $< > $@; \
+			else \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(OCAML_DEP_PACKAGES) \
+				-pp "$$pp $(PPFLAGS)" $(DINCFLAGS) $< > $@; \
+			fi
+
+$(BCDIDIR)/%.di $(NCDIDIR)/%.di:	%.mli
+			$(QUIET)echo making $@ from $<
+			$(QUIET)if [ ! -d $(@D) ]; then mkdir -p $(@D); fi
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(DEPFLAGS) $(DINCFLAGS) $< > $@; \
+			else \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(DEPFLAGS) \
+			    -pp "$$pp $(PPFLAGS)" $(DINCFLAGS) $< > $@; \
+			fi
+
+doc/$(RESULT)/html: $(DOC_FILES)
+	rm -rf $@
+	mkdir -p $@
+	$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+	if [ -z "$$pp" ]; then \
+	  echo $(OCAMLDOC) -html -d $@ $(OCAMLDOCFLAGS) $(INCFLAGS) $(DOC_FILES); \
+	  $(OCAMLDOC) -html -d $@ $(OCAMLDOCFLAGS) $(INCFLAGS) $(DOC_FILES); \
+	else \
+	  echo $(OCAMLDOC) -pp \"$$pp $(PPFLAGS)\" -html -d $@ $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES); \
+	  $(OCAMLDOC) -pp "$$pp $(PPFLAGS)" -html -d $@ $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES); \
+	fi
+
+doc/$(RESULT)/latex: $(DOC_FILES)
+	rm -rf $@
+	mkdir -p $@
+	$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+	if [ -z "$$pp" ]; then \
+	  echo $(OCAMLDOC) -latex $(OCAMLDOCFLAGS) $(INCFLAGS) \
+	  	$(DOC_FILES) -o $@/doc.tex; \
+	  $(OCAMLDOC) -latex $(OCAMLDOCFLAGS) $(INCFLAGS) $(DOC_FILES) \
+	  	-o $@/doc.tex; \
+	else \
+	  echo $(OCAMLDOC) -pp \"$$pp $(PPFLAGS)\" -latex $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES) -o $@/doc.tex; \
+	  $(OCAMLDOC) -pp "$$pp $(PPFLAGS)" -latex $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES) -o $@/doc.tex; \
+	fi
+
+doc/$(RESULT)/latex/doc.ps: doc/$(RESULT)/latex
+	cd doc/$(RESULT)/latex && \
+	  $(LATEX) doc.tex && \
+	  $(LATEX) doc.tex && \
+	  $(DVIPS) $(DVIPSFLAGS) doc.dvi -o $(@F)
+
+doc/$(RESULT)/latex/doc.pdf: doc/$(RESULT)/latex/doc.ps
+	cd doc/$(RESULT)/latex && $(PS2PDF) $(<F)
+
+define make_subproj
+.PHONY:
+subproj_$(1):
+	$$(eval $$(call PROJ_$(1)))
+	$(QUIET)if [ "$(SUBTARGET)" != "all" ]; then \
+	  $(MAKE) -f $(OCAMLMAKEFILE) $(SUBTARGET); \
+	fi
+endef
+
+$(foreach subproj,$(SUBPROJS),$(eval $(call make_subproj,$(subproj))))
+
+.PHONY:
+subprojs: $(SUBPROJS:%=subproj_%)
+
+###########################################################################
+# (UN)INSTALL RULES FOR LIBRARIES
+
+.PHONY: libinstall
+libinstall:	all
+	$(QUIET)printf "\nInstalling library with ocamlfind\n"
+	$(OCAMLFIND) install $(OCAMLFIND_INSTFLAGS) $(RESULT) META $(LIBINSTALL_FILES)
+	$(QUIET)printf "\nInstallation successful.\n"
+
+.PHONY: libuninstall
+libuninstall:
+	$(QUIET)printf "\nUninstalling library with ocamlfind\n"
+	$(OCAMLFIND) remove $(OCAMLFIND_INSTFLAGS) $(RESULT)
+	$(QUIET)printf "\nUninstallation successful.\n"
+
+.PHONY: rawinstall
+rawinstall:	all
+	$(QUIET)printf "\nInstalling library to: $(OCAML_LIB_INSTALL)\n"
+	-install -d $(OCAML_LIB_INSTALL)
+	for i in $(LIBINSTALL_FILES); do \
+	  if [ -f $$i ]; then \
+	    install -c -m 0644 $$i $(OCAML_LIB_INSTALL); \
+	  fi; \
+	done
+	$(QUIET)printf "\nInstallation successful.\n"
+
+.PHONY: rawuninstall
+rawuninstall:
+	$(QUIET)printf "\nUninstalling library from: $(OCAML_LIB_INSTALL)\n"
+	cd $(OCAML_LIB_INSTALL) && rm $(notdir $(LIBINSTALL_FILES))
+	$(QUIET)printf "\nUninstallation successful.\n"
+
+###########################################################################
+# MAINTAINANCE RULES
+
+.PHONY:	clean
+clean::
+	rm -f $(TARGETS) $(TRASH)
+	rm -rf $(BCDIDIR) $(NCDIDIR) $(MLDEPDIR)
+
+.PHONY:	cleanup
+cleanup::
+	rm -f $(NONEXECS) $(TRASH)
+	rm -rf $(BCDIDIR) $(NCDIDIR) $(MLDEPDIR)
+
+.PHONY: clean-doc
+clean-doc::
+	rm -rf doc
+
+.PHONY: nobackup
+nobackup:
+	rm -f *.bak *~ *.dup
diff --git a/tools/debugger/pdb/PDB.ml b/tools/debugger/pdb/PDB.ml
new file mode 100644
index 0000000000..0ed121b7aa
--- /dev/null
+++ b/tools/debugger/pdb/PDB.ml
@@ -0,0 +1,180 @@
+(** PDB.ml
+ *
+ *  Dispatch debugger commands to the appropriate context
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+exception Unimplemented of string
+exception Unknown_context of string
+exception Unknown_domain
+
+type context_t =
+  | Void
+  | Event_channel
+  | Domain of Domain.context_t
+  | Process of Process.context_t
+
+let string_of_context ctx =
+  match ctx with
+  | Void -> "{void}"
+  | Event_channel -> "{event channel}"
+  | Domain d  -> Domain.string_of_context d
+  | Process p -> Process.string_of_context p
+
+
+
+let read_registers ctx =
+  match ctx with
+  | Domain d  -> Domain.read_registers d 
+  | _ -> Intel.null_registers
+
+let write_register ctx register value =
+  match ctx with
+  | Domain d  -> Domain.write_register d register value
+  | _ -> raise (Unimplemented "write register")
+
+
+let read_memory ctx addr len =
+  match ctx with
+  | Domain d  -> Domain.read_memory d addr len
+  | _ -> raise (Unimplemented "read memory")
+
+let write_memory ctx addr values =
+  match ctx with
+  | Domain d  -> Domain.write_memory d addr values
+  | _ -> raise (Unimplemented "write memory")
+
+
+let continue ctx =
+  match ctx with
+  | Domain d  -> Domain.continue d
+  | _ -> raise (Unimplemented "continue")
+
+let step ctx =
+  match ctx with
+  | Domain d  -> Domain.step d
+  | _ -> raise (Unimplemented "step")
+
+
+let insert_memory_breakpoint ctx addr len =
+  match ctx with
+  | Domain d  -> Domain.insert_memory_breakpoint d addr len
+  | _ -> raise (Unimplemented "insert memory breakpoint")
+
+let remove_memory_breakpoint ctx addr len =
+  match ctx with
+  | Domain d  -> Domain.remove_memory_breakpoint d addr len
+  | _ -> raise (Unimplemented "remove memory breakpoint")
+
+
+let pause ctx =
+  match ctx with
+  | Domain d  -> Domain.pause d
+  | _ -> raise (Unimplemented "pause target")
+
+
+let attach_debugger ctx =
+  match ctx with
+  | Domain d  -> Domain.attach_debugger (Domain.get_domain d) 
+	                                (Domain.get_execution_domain d)
+  | _ -> raise (Unimplemented "attach debugger")
+
+let detach_debugger ctx =
+  match ctx with
+  | Domain d  -> Domain.detach_debugger (Domain.get_domain d) 
+	                                (Domain.get_execution_domain d)
+  | _ -> raise (Unimplemented "detach debugger")
+
+external open_debugger : unit -> unit = "open_context"
+external close_debugger : unit -> unit = "close_context"
+
+(* this is just the domains right now... expand to other contexts later *)
+external debugger_status : unit -> unit = "debugger_status"
+
+
+(***********************************************************)
+
+
+let hash = Hashtbl.create 10
+
+let debug_contexts () =
+  print_endline "context list:";
+  let print_context key ctx = 
+    match ctx with
+    | Void -> print_endline (Printf.sprintf "  [%s] {void}" 
+			       (Util.get_connection_info key))
+    | Event_channel -> print_endline (Printf.sprintf "  [%s] {event_channel}" 
+			       (Util.get_connection_info key))
+    | Process p -> print_endline (Printf.sprintf "  [%s] %s" 
+				    (Util.get_connection_info key)
+				    (Process.string_of_context p))
+    | Domain d -> print_endline (Printf.sprintf "  [%s] %s" 
+				   (Util.get_connection_info key)
+				   (Domain.string_of_context d))
+  in
+  Hashtbl.iter print_context hash
+
+(** add_context : add a new context to the hash table.
+ *  if there is an existing context for the same key then it 
+ *  is first removed implictly by the hash table replace function.
+ *)
+let add_context (key:Unix.file_descr) context params =
+  match context with
+  | "void" -> Hashtbl.replace hash key Void
+  | "event channel" -> Hashtbl.replace hash key Event_channel
+  | "domain" -> 
+      begin
+	match params with
+	| dom::exec_dom::_ ->
+            let d = Domain(Domain.new_context dom exec_dom) in
+	    attach_debugger d;
+            Hashtbl.replace hash key d
+	| _ -> failwith "bogus parameters to domain context"
+      end
+  | "process" -> 
+      begin
+	match params with
+	| dom::pid::_ ->
+	    let p = Process.new_context dom pid in
+	    Hashtbl.replace hash key (Process(p))
+	| _ -> failwith "bogus parameters to process context"
+      end
+  | _ -> raise (Unknown_context context)
+
+let add_default_context sock =
+  add_context sock "void" []
+
+let find_context key =
+  try
+    Hashtbl.find hash key
+  with
+    Not_found ->
+      print_endline "error: (find_context) PDB context not found";
+      raise Not_found
+
+let delete_context key =
+  Hashtbl.remove hash key
+
+(** find_domain : Locate the context(s) matching a particular domain 
+ *  and execution_domain pair.
+ *)
+
+let find_domain dom exec_dom =
+    let find key ctx list =
+      match ctx with
+      |	Domain d ->
+	  if (((Domain.get_domain d) = dom) &&
+	      ((Domain.get_execution_domain d) = exec_dom))
+	  then
+	    key :: list
+	  else
+	    list
+      | _ -> list
+    in
+    let sock_list = Hashtbl.fold find hash [] in
+    match sock_list with
+    | hd::tl -> hd
+    | [] -> raise Unknown_domain
diff --git a/tools/debugger/pdb/Process.ml b/tools/debugger/pdb/Process.ml
new file mode 100644
index 0000000000..79632b3298
--- /dev/null
+++ b/tools/debugger/pdb/Process.ml
@@ -0,0 +1,39 @@
+(** Process.ml
+ *
+ *  process context implementation
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+open Int32
+open Intel
+
+type context_t =
+{
+  mutable domain : int;
+  mutable process : int;
+}
+
+let default_context = { domain = 0; process = 0 }
+
+let new_context dom proc = { domain = dom; process = proc }
+
+let string_of_context ctx =
+  Printf.sprintf "{process} domain: %d, process: %d"
+                 ctx.domain  ctx.process
+
+let set_domain ctx value =
+  ctx.domain <- value;
+  print_endline (Printf.sprintf "ctx.domain <- %d" ctx.domain)
+
+let set_process ctx value =
+  ctx.process <- value;
+  print_endline (Printf.sprintf "ctx.process <- %d" ctx.process)
+
+let get_domain ctx =
+  ctx.domain
+
+let get_process ctx =
+  ctx.process
diff --git a/tools/debugger/pdb/Process.mli b/tools/debugger/pdb/Process.mli
new file mode 100644
index 0000000000..39b6221892
--- /dev/null
+++ b/tools/debugger/pdb/Process.mli
@@ -0,0 +1,20 @@
+(** Process.mli
+ *
+ *  process context interface
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+type context_t
+
+val default_context : context_t
+val new_context : int -> int -> context_t
+
+val set_domain : context_t -> int -> unit
+val get_domain : context_t -> int
+val set_process : context_t -> int -> unit
+val get_process : context_t -> int
+
+val string_of_context : context_t -> string
diff --git a/tools/debugger/pdb/Util.ml b/tools/debugger/pdb/Util.ml
new file mode 100644
index 0000000000..a5722242db
--- /dev/null
+++ b/tools/debugger/pdb/Util.ml
@@ -0,0 +1,153 @@
+(** Util.ml
+ *
+ *  various utility functions
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+let int_of_hexchar h = 
+  let i = int_of_char h in
+  match h with
+  | '0' .. '9' -> i - (int_of_char '0')
+  | 'a' .. 'f' -> i - (int_of_char 'a') + 10
+  | 'A' .. 'F' -> i - (int_of_char 'A') + 10
+  | _ -> raise (Invalid_argument "unknown hex character")
+
+let hexchar_of_int i = 
+  let hexchars = [| '0'; '1'; '2'; '3'; '4'; '5'; '6'; '7';
+		    '8'; '9'; 'a'; 'b'; 'c'; 'd'; 'e'; 'f' |]
+  in
+  hexchars.(i)
+
+
+(** flip the bytes of a four byte int 
+ *)
+
+let flip_int num =
+  let a = num mod 256
+  and b = (num / 256) mod 256
+  and c = (num / (256 * 256)) mod 256
+  and d = (num / (256 * 256 * 256)) in
+  (a * 256 * 256 * 256) + (b * 256 * 256) + (c * 256) + d
+
+    
+let flip_int32 num =
+  let a = Int32.logand num 0xffl
+  and b = Int32.logand (Int32.shift_right_logical num 8)  0xffl
+  and c = Int32.logand (Int32.shift_right_logical num 16) 0xffl
+  and d =              (Int32.shift_right_logical num 24)       in
+  (Int32.logor
+     (Int32.logor (Int32.shift_left a 24) (Int32.shift_left b 16))
+     (Int32.logor (Int32.shift_left c 8)  d))
+
+
+let int_list_of_string_list list =
+  List.map (fun x -> int_of_string x) list
+    
+let int_list_of_string str len =
+  let array_of_string s =
+    let int_array = Array.make len 0 in
+    for loop = 0 to len - 1 do
+      int_array.(loop) <- (Char.code s.[loop]);
+    done;
+    int_array
+  in
+  Array.to_list (array_of_string str)
+
+
+(* remove leading and trailing whitespace from a string *)
+
+let chomp str =
+  let head = Str.regexp "^[ \t\r\n]+" in
+  let tail = Str.regexp "[ \t\r\n]+$" in
+  let str = Str.global_replace head "" str in
+  Str.global_replace tail "" str
+
+(* Stupid little parser for    "<key>=<value>[,<key>=<value>]*"
+   It first chops the entire command at each ',', so no ',' in key or value!
+   Mucked to return a list of words for "value"
+ *)
+
+let list_of_string str =
+  let delim c = Str.regexp ("[ \t]*" ^ c ^ "[ \t]*") in
+  let str_list = Str.split (delim " ") str in
+  List.map (fun x -> chomp(x)) str_list
+
+let little_parser fn str =
+  let delim c = Str.regexp ("[ \t]*" ^ c ^ "[ \t]*") in
+  let str_list = Str.split (delim ",") str in
+  let pair s =
+    match Str.split (delim "=") s with
+    | [key;value] -> fn (chomp key) (list_of_string value)
+    | [key] -> fn (chomp key) []
+    | _ -> failwith (Printf.sprintf "error: (little_parser) parse error [%s]" str)
+  in
+  List.iter pair str_list
+
+(* boolean list membership test *)
+let not_list_member the_list element =
+  try 
+    List.find (fun x -> x = element) the_list;
+    false
+  with
+    Not_found -> true
+
+(* a very inefficient way to remove the elements of one list from another *)
+let list_remove the_list remove_list =
+  List.filter (not_list_member remove_list) the_list
+
+(* get a description of a file descriptor *)
+let get_connection_info fd =
+  let get_local_info fd =
+    let sockname = Unix.getsockname fd in
+    match sockname with
+    | Unix.ADDR_UNIX(s) -> s
+    | Unix.ADDR_INET(a,p) -> ((Unix.string_of_inet_addr a) ^ ":" ^
+			      (string_of_int p))
+  and get_remote_info fd =
+    let sockname = Unix.getpeername fd in 
+    match sockname with
+    | Unix.ADDR_UNIX(s) -> s
+    | Unix.ADDR_INET(a,p) -> ((Unix.string_of_inet_addr a) ^ ":" ^
+			      (string_of_int p))
+  in
+  try
+    get_remote_info fd
+  with
+  | Unix.Unix_error (Unix.ENOTSOCK, s1, s2) -> 
+      let s = Unix.fstat fd in
+      Printf.sprintf "dev: %d, inode: %d" s.Unix.st_dev s.Unix.st_ino
+  | _ -> get_local_info fd
+
+
+(* really write a string *)
+let really_write fd str =
+  let strlen = String.length str in
+  let sent = ref 0 in
+  while (!sent < strlen) do
+    sent := !sent + (Unix.write fd str !sent (strlen - !sent))
+  done
+
+let write_character fd ch =
+  let str = String.create 1 in
+  str.[0] <- ch;
+  really_write fd str
+
+
+
+let send_reply fd reply =
+  let checksum = ref 0 in
+  write_character fd '$';
+  for loop = 0 to (String.length reply) - 1 do
+    write_character fd reply.[loop];
+    checksum := !checksum + int_of_char reply.[loop]
+  done;
+  write_character fd '#';
+  write_character fd (hexchar_of_int ((!checksum mod 256) / 16));
+  write_character fd (hexchar_of_int ((!checksum mod 256) mod 16))
+  (*
+   * BUG NEED TO LISTEN FOR REPLY +/- AND POSSIBLY RE-TRANSMIT
+   *)
+
diff --git a/tools/debugger/pdb/debugger.ml b/tools/debugger/pdb/debugger.ml
new file mode 100644
index 0000000000..5a3002470b
--- /dev/null
+++ b/tools/debugger/pdb/debugger.ml
@@ -0,0 +1,315 @@
+(** debugger.ml
+ *
+ *  main debug functionality
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+open Intel
+open PDB
+open Util
+open Str
+
+(** a few debugger commands such as step 's' and continue 'c' do 
+ *  not immediately return a response to the debugger.  in these 
+ *  cases we raise No_reply instead. 
+ *)
+exception No_reply
+
+let initialize_debugger () =
+  ()
+
+let exit_debugger () =
+  ()
+
+
+(**
+   Detach Command
+   Note: response is ignored by gdb.  We leave the context in the
+   hash.  It will be cleaned up with the socket is closed.
+ *)
+let gdb_detach ctx =
+  PDB.detach_debugger ctx;
+  raise No_reply
+
+(**
+   Kill Command
+   Note: response is ignored by gdb.  We leave the context in the
+   hash.  It will be cleaned up with the socket is closed.
+ *)
+let gdb_kill () =
+  ""
+
+
+
+(**
+   Continue Command.
+   resume the target
+ *)
+let gdb_continue ctx =
+  PDB.continue ctx;
+  raise No_reply
+
+(**
+   Step Command.
+   single step the target
+ *)
+let gdb_step ctx =
+  PDB.step ctx;
+  raise No_reply
+
+
+(**
+   Read Registers Command.
+   returns 16 4-byte registers in a particular defined by gdb.
+ *)
+let gdb_read_registers ctx =
+  let regs = PDB.read_registers ctx in
+  let str = 
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.eax)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.ecx)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.edx)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.ebx)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.esp)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.ebp)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.esi)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.edi)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.eip)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.eflags)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.cs)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.ss)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.ds)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.es)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.fs)) ^
+    (Printf.sprintf "%08lx" (Util.flip_int32 regs.gs)) in
+  str
+      
+(**
+   Set Thread Command
+ *)
+let gdb_set_thread command =
+  "OK"
+
+
+(**
+   Read Memory Packets
+ *)
+let gdb_read_memory ctx command =
+  let int_list_to_string i str =
+    (Printf.sprintf "%02x" i) ^ str
+  in
+  let read_mem addr len =
+    try
+      let mem = PDB.read_memory ctx addr len  in
+      List.fold_right int_list_to_string mem ""
+    with
+      Failure s -> "E02"
+  in
+  Scanf.sscanf command "m%lx,%d" read_mem
+
+
+
+(**
+   Write Memory Packets
+ *)
+let gdb_write_memory ctx command =
+  let write_mem addr len =
+    print_endline (Printf.sprintf "  gdb_write_memory %lx %x\n" addr len);
+    print_endline (Printf.sprintf "  [[ unimplemented ]]\n")
+  in
+  Scanf.sscanf command "M%lx,%d" write_mem;
+  "OK"
+
+
+
+(**
+   Write Register Packets
+ *)
+let gdb_write_register ctx command =
+  let write_reg reg goofy_val =
+    let new_val = Util.flip_int32 goofy_val in
+    match reg with
+    |  0 -> PDB.write_register ctx EAX new_val
+    |  1 -> PDB.write_register ctx ECX new_val
+    |  2 -> PDB.write_register ctx EDX new_val
+    |  3 -> PDB.write_register ctx EBX new_val
+    |  4 -> PDB.write_register ctx ESP new_val
+    |  5 -> PDB.write_register ctx EBP new_val
+    |  6 -> PDB.write_register ctx ESI new_val
+    |  7 -> PDB.write_register ctx EDI new_val
+    |  8 -> PDB.write_register ctx EIP new_val
+    |  9 -> PDB.write_register ctx EFLAGS new_val
+    | 10 -> PDB.write_register ctx CS new_val
+    | 11 -> PDB.write_register ctx SS new_val
+    | 12 -> PDB.write_register ctx DS new_val
+    | 13 -> PDB.write_register ctx ES new_val
+    | 14 -> PDB.write_register ctx FS new_val
+    | 15 -> PDB.write_register ctx GS new_val
+    | _  -> print_endline (Printf.sprintf "write unknown register [%d]" reg)
+  in
+  Scanf.sscanf command "P%x=%lx" write_reg;
+  "OK"
+
+
+(**
+   General Query Packets
+ *)
+let gdb_query command =
+  match command with
+  | "qC" -> ""
+  | "qOffsets" -> ""
+  | "qSymbol::" -> ""
+  | _ -> 
+      print_endline (Printf.sprintf "unknown gdb query packet [%s]" command);
+      "E01"
+
+
+(**
+   Write Memory Binary Packets
+ *)
+let gdb_write_memory_binary ctx command =
+  let write_mem addr len =
+    let pos = Str.search_forward (Str.regexp ":") command 0 in
+    let txt = Str.string_after command (pos + 1) in
+    PDB.write_memory ctx addr (int_list_of_string txt len)
+  in
+  Scanf.sscanf command "X%lx,%d" write_mem;
+  "OK"
+
+
+
+(**
+   Last Signal Command
+ *)
+let gdb_last_signal =
+  "S00"
+
+
+
+
+(**
+   Process PDB extensions to the GDB serial protocol.
+   Changes the mutable context state.
+ *)
+let pdb_extensions command sock =
+  let process_extension key value =
+    (* since this command can change the context, we need to grab it each time *)
+    let ctx = PDB.find_context sock in
+    match key with
+    | "status" ->
+	print_endline (string_of_context ctx);
+	PDB.debug_contexts ();
+	debugger_status ()
+    | "context" ->
+        PDB.add_context sock (List.hd value) 
+                             (int_list_of_string_list (List.tl value))
+    | _ -> failwith (Printf.sprintf "unknown pdb extension command [%s:%s]" 
+		                    key (List.hd value))
+  in
+  try
+    Util.little_parser process_extension 
+                       (String.sub command 1 ((String.length command) - 1));
+    "OK"
+  with
+  | Unknown_context s -> 
+      print_endline (Printf.sprintf "unknown context [%s]" s);
+      "E01"
+  | Failure s -> "E01"
+
+
+(**
+   Insert Breakpoint or Watchpoint Packet
+ *)
+let gdb_insert_bwcpoint ctx command =
+  let insert cmd addr length =
+    try
+      match cmd with
+      | 0 -> PDB.insert_memory_breakpoint ctx addr length; "OK"
+      | _ -> ""
+    with
+      Failure s -> "E03"
+  in
+  Scanf.sscanf command "Z%d,%lx,%d" insert
+
+(**
+   Remove Breakpoint or Watchpoint Packet
+ *)
+let gdb_remove_bwcpoint ctx command =
+  let insert cmd addr length =
+    try
+      match cmd with
+      | 0 -> PDB.remove_memory_breakpoint ctx addr length; "OK"
+      | _ -> ""
+    with
+      Failure s -> "E04"
+  in
+  Scanf.sscanf command "z%d,%lx,%d" insert
+
+(**
+   Do Work!
+
+   @param command  char list
+ *)
+
+let process_command command sock =
+  let ctx = PDB.find_context sock in
+  try
+    match command.[0] with
+    | 'c' -> gdb_continue ctx
+    | 'D' -> gdb_detach ctx
+    | 'g' -> gdb_read_registers ctx
+    | 'H' -> gdb_set_thread command
+    | 'k' -> gdb_kill ()
+    | 'm' -> gdb_read_memory ctx command
+    | 'M' -> gdb_write_memory ctx command
+    | 'P' -> gdb_write_register ctx command
+    | 'q' -> gdb_query command
+    | 's' -> gdb_step ctx
+    | 'x' -> pdb_extensions command sock
+    | 'X' -> gdb_write_memory_binary ctx command
+    | '?' -> gdb_last_signal
+    | 'z' -> gdb_remove_bwcpoint ctx command
+    | 'Z' -> gdb_insert_bwcpoint ctx command
+    | _ -> 
+	print_endline (Printf.sprintf "unknown gdb command [%s]" command);
+	""
+  with
+    Unimplemented s ->
+      print_endline (Printf.sprintf "loser. unimplemented command [%s][%s]" 
+		                    command s);
+      ""
+
+
+(**
+   process_evtchn  
+
+   This is called each time a virq_pdb is sent from xen to dom 0.
+   It is sent by Xen when a domain hits a breakpoint. 
+
+   Think of this as the continuation function for a "c" or "s" command.
+*)
+
+external query_domain_stop : unit -> (int * int) list = "query_domain_stop"
+(* returns a list of paused domains : () -> (domain, vcpu) list *)
+
+let process_evtchn fd =
+  let channel = Evtchn.read fd in
+  let find_pair (dom, vcpu) =
+    print_endline (Printf.sprintf "checking %d.%d" dom vcpu);
+    try
+      let sock = PDB.find_domain dom vcpu in
+      true
+    with
+      Unknown_domain -> false
+  in
+  let dom_list = query_domain_stop () in
+  let (dom, vcpu) = List.find find_pair dom_list in
+  let vec = 3 in
+  let sock = PDB.find_domain dom vcpu in
+  print_endline (Printf.sprintf "handle bkpt d:%d ed:%d v:%d  %s" 
+		   dom vcpu vec (Util.get_connection_info sock));
+  Util.send_reply sock "S05";
+  Evtchn.unmask fd channel                                (* allow next virq *)
+  
diff --git a/tools/debugger/pdb/evtchn.ml b/tools/debugger/pdb/evtchn.ml
new file mode 100644
index 0000000000..5443accd9b
--- /dev/null
+++ b/tools/debugger/pdb/evtchn.ml
@@ -0,0 +1,32 @@
+(** evtchn.ml
+ *
+ *  event channel interface
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+let dev_name = "/dev/xen/evtchn"                          (* EVTCHN_DEV_NAME *)
+let dev_major = 10                                       (* EVTCHN_DEV_MAJOR *)
+let dev_minor = 201                                      (* EVTCHN_DEV_MINOR *)
+
+let virq_pdb = 6                                      (* as defined VIRQ_PDB *)
+
+external bind_virq : int -> int = "evtchn_bind_virq"
+external bind : Unix.file_descr -> int -> unit = "evtchn_bind"
+external unbind : Unix.file_descr -> int -> unit = "evtchn_unbind"
+external ec_open : string -> int -> int -> Unix.file_descr = "evtchn_open"
+external read : Unix.file_descr -> int = "evtchn_read"
+external ec_close : Unix.file_descr -> unit = "evtchn_close"
+external unmask : Unix.file_descr -> int -> unit = "evtchn_unmask"
+
+let setup () =
+  let port = bind_virq virq_pdb in
+  let fd = ec_open dev_name dev_major dev_minor in
+  bind fd port;
+  fd
+
+let teardown fd =
+  unbind fd virq_pdb;
+  ec_close fd
diff --git a/tools/debugger/pdb/evtchn.mli b/tools/debugger/pdb/evtchn.mli
new file mode 100644
index 0000000000..18b3ed667b
--- /dev/null
+++ b/tools/debugger/pdb/evtchn.mli
@@ -0,0 +1,14 @@
+(** evtchn.mli
+ *
+ *  event channel interface
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+
+val setup : unit -> Unix.file_descr
+val read : Unix.file_descr -> int
+val teardown : Unix.file_descr -> unit
+val unmask : Unix.file_descr -> int -> unit
diff --git a/tools/debugger/pdb/pdb_caml_xc.c b/tools/debugger/pdb/pdb_caml_xc.c
new file mode 100644
index 0000000000..6ba82a92c2
--- /dev/null
+++ b/tools/debugger/pdb/pdb_caml_xc.c
@@ -0,0 +1,732 @@
+/*
+ * pdb_caml_xc.c
+ *
+ * http://www.cl.cam.ac.uk/netos/pdb
+ *
+ * OCaml to libxc interface library for PDB
+ */
+
+#include <xc.h>
+#include <xendebug.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <caml/alloc.h>
+#include <caml/fail.h>
+#include <caml/memory.h>
+#include <caml/mlvalues.h>
+
+int pdb_evtchn_bind_virq (int xc_handle, int virq, int *port);
+int xen_evtchn_bind (int evtchn_fd, int idx);
+int xen_evtchn_unbind (int evtchn_fd, int idx);
+
+/* this order comes from xen/include/public/arch-x86_32.h */
+enum x86_registers { PDB_EBX, PDB_ECX, PDB_EDX, PDB_ESI, PDB_EDI,
+                     PDB_EBP, PDB_EAX, PDB_Error_code, PDB_Entry_vector, 
+                     PDB_EIP, PDB_CS, PDB_EFLAGS, PDB_ESP, PDB_SS,
+                     PDB_ES, PDB_DS, PDB_FS, PDB_GS };
+
+static void dump_regs (cpu_user_regs_t *ctx);
+
+static int xc_handle = -1;
+
+typedef struct
+{
+    int domain;
+    int vcpu;
+} context_t;
+
+#define decode_context(_ctx, _ocaml)   \
+{  \
+    (_ctx)->domain = Int_val(Field((_ocaml),0));  \
+    (_ctx)->vcpu = Int_val(Field((_ocaml),1));  \
+}
+
+#define encode_context(_ctx, _ocaml)  \
+{  \
+    (_ocaml) = caml_alloc_tuple(2);  \
+    Store_field((_ocaml), 0, Val_int((_ctx)->domain));  \
+    Store_field((_ocaml), 1, Val_int((_ctx)->vcpu));  \
+}
+
+
+/****************************************************************************/
+
+/*
+ * open_context : unit -> unit
+ */
+value
+open_context (value unit)
+{
+    CAMLparam1(unit);
+
+    xc_handle = xc_interface_open();
+
+    if ( xc_handle < 0 )
+    {
+        fprintf(stderr, "(pdb) error opening xc interface: %d (%s)\n",
+                errno, strerror(errno));
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * close_context : unit -> unit
+ */
+value
+close_context (value unit)
+{
+    CAMLparam1(unit);
+    int rc;
+    
+    if ( (rc = xc_interface_close(xc_handle)) < 0 )
+    {
+        fprintf(stderr, "(pdb) error closing xc interface: %d (%s)\n",
+                errno, strerror(errno));
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * read_registers : context_t -> int32
+ */
+value
+read_registers (value context)
+{
+    CAMLparam1(context);
+    CAMLlocal1(result);
+
+    cpu_user_regs_t *regs;
+    context_t ctx;
+
+    decode_context(&ctx, context);
+
+    if ( xendebug_read_registers(xc_handle, ctx.domain, ctx.vcpu, &regs) )
+    {
+        printf("(pdb) read registers error!\n");  fflush(stdout);
+        failwith("read registers error");
+    }
+
+    dump_regs(regs);
+
+    result = caml_alloc_tuple(18);                                  /* FIXME */
+
+    Store_field(result,  0, caml_copy_int32(regs->ebx));
+    Store_field(result,  1, caml_copy_int32(regs->ecx));
+    Store_field(result,  2, caml_copy_int32(regs->edx));
+    Store_field(result,  3, caml_copy_int32(regs->esi));
+    Store_field(result,  4, caml_copy_int32(regs->edi));
+    Store_field(result,  5, caml_copy_int32(regs->ebp));
+    Store_field(result,  6, caml_copy_int32(regs->eax));
+    Store_field(result,  7, caml_copy_int32(regs->error_code));        /* 16 */
+    Store_field(result,  8, caml_copy_int32(regs->entry_vector));      /* 16 */
+    Store_field(result,  9, caml_copy_int32(regs->eip));
+    Store_field(result, 10, caml_copy_int32(regs->cs));                /* 16 */
+    Store_field(result, 11, caml_copy_int32(regs->eflags));
+    Store_field(result, 12, caml_copy_int32(regs->esp));
+    Store_field(result, 13, caml_copy_int32(regs->ss));                /* 16 */
+    Store_field(result, 14, caml_copy_int32(regs->es));                /* 16 */
+    Store_field(result, 15, caml_copy_int32(regs->ds));                /* 16 */
+    Store_field(result, 16, caml_copy_int32(regs->fs));                /* 16 */
+    Store_field(result, 17, caml_copy_int32(regs->gs));                /* 16 */
+
+    CAMLreturn(result);
+}
+
+
+/*
+ * write_register : context_t -> register -> int32 -> unit
+ */
+value
+write_register (value context, value reg, value newval)
+{
+    CAMLparam3(context, reg, newval);
+
+    int my_reg = Int_val(reg);
+    int val = Int32_val(newval);
+
+    context_t ctx;
+    cpu_user_regs_t *regs;
+
+    printf("(pdb) write register\n");
+
+    decode_context(&ctx, context);
+
+    if ( xendebug_read_registers(xc_handle, ctx.domain, ctx.vcpu, &regs) )
+    {
+        printf("(pdb) write register (get) error!\n");  fflush(stdout);
+        failwith("write register error");
+    }
+
+    switch (my_reg)
+    {
+    case PDB_EBX: regs->ebx = val; break;
+    case PDB_ECX: regs->ecx = val; break;
+    case PDB_EDX: regs->edx = val; break;
+    case PDB_ESI: regs->esi = val; break;
+    case PDB_EDI: regs->edi = val; break;
+
+    case PDB_EBP: regs->ebp = val; break;
+    case PDB_EAX: regs->eax = val; break;
+    case PDB_Error_code: regs->error_code = val; break;
+    case PDB_Entry_vector: regs->entry_vector = val; break;
+ 
+    case PDB_EIP: regs->eip = val; break;
+    case PDB_CS:  regs->cs  = val; break;
+    case PDB_EFLAGS: regs->eflags = val; break;
+    case PDB_ESP: regs->esp = val; break;
+    case PDB_SS:  regs->ss  = val; break;
+    case PDB_ES:  regs->es  = val; break;
+    case PDB_DS:  regs->ds  = val; break;
+    case PDB_FS:  regs->fs  = val; break;
+    case PDB_GS:  regs->gs  = val; break;
+    }
+
+    if ( xendebug_write_registers(xc_handle, ctx.domain, ctx.vcpu, regs) )
+    {
+        printf("(pdb) write register (set) error!\n");  fflush(stdout);
+        failwith("write register error");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * read_memory : context_t -> int32 -> int -> int
+ */
+value
+read_memory (value context, value address, value length)
+{
+    CAMLparam3(context, address, length);
+    CAMLlocal2(result, temp);
+
+    context_t ctx;
+    int loop;
+    char *buffer;
+    memory_t my_address = Int32_val(address);
+    u32 my_length = Int_val(length);
+
+    printf ("(pdb) read memory\n");
+
+    decode_context(&ctx, context);
+
+    buffer = malloc(my_length);
+    if (buffer == NULL)
+    {
+        printf("(pdb) read memory: malloc failed.\n");  fflush(stdout);
+        failwith("read memory error");
+    }
+
+    if ( xendebug_read_memory(xc_handle, ctx.domain, ctx.vcpu, 
+                              my_address, my_length, buffer) )
+    {
+        printf("(pdb) read memory error!\n");  fflush(stdout);
+        failwith("read memory error");
+    }
+
+    result = caml_alloc(2,0);
+    if ( my_length > 0 )                                              /* car */
+    {
+        Store_field(result, 0, Val_int(buffer[my_length - 1] & 0xff));
+    }
+    else
+
+    {
+        Store_field(result, 0, Val_int(0));                    
+    }
+    Store_field(result, 1, Val_int(0));                               /* cdr */
+
+    for (loop = 1; loop < my_length; loop++)
+    {
+        temp = result;
+        result = caml_alloc(2,0);
+        Store_field(result, 0, Val_int(buffer[my_length - loop - 1] & 0xff));
+        Store_field(result, 1, temp);
+    }
+
+    CAMLreturn(result);
+}
+
+/*
+ * write_memory : context_t -> int32 -> int list -> unit
+ */
+value
+write_memory (value context, value address, value val_list)
+{
+    CAMLparam3(context, address, val_list);
+    CAMLlocal1(node);
+
+    context_t ctx;
+
+    char buffer[4096];  /* a big buffer */
+    memory_t  my_address;
+    u32 length = 0;
+
+    printf ("(pdb) write memory\n");
+
+    decode_context(&ctx, context);
+
+    node = val_list;
+    if ( Int_val(node) == 0 )       /* gdb functionalty test uses empty list */
+    {
+        CAMLreturn(Val_unit);
+    }
+
+    while ( Int_val(Field(node,1)) != 0 )
+    {
+        buffer[length++] = Int_val(Field(node, 0));
+        node = Field(node,1);
+    }
+    buffer[length++] = Int_val(Field(node, 0));
+
+    my_address = (memory_t) Int32_val(address);
+
+    if ( xendebug_write_memory(xc_handle, ctx.domain, ctx.vcpu,
+                               my_address, length, buffer) )
+    {
+        printf("(pdb) write memory error!\n");  fflush(stdout);
+        failwith("write memory error");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+
+/*********************************************************************/
+
+void
+dump_regs (cpu_user_regs_t *regs)
+{
+    printf ("   eax: %x\n", regs->eax);
+    printf ("   ecx: %x\n", regs->ecx);
+    printf ("   edx: %x\n", regs->edx);
+    printf ("   ebx: %x\n", regs->ebx);
+    printf ("   esp: %x\n", regs->esp);
+    printf ("   ebp: %x\n", regs->ebp);
+    printf ("   esi: %x\n", regs->esi);
+    printf ("   edi: %x\n", regs->edi);
+    printf ("   eip: %x\n", regs->eip);
+    printf (" flags: %x\n", regs->eflags);
+    printf ("    cs: %x\n", regs->cs);
+    printf ("    ss: %x\n", regs->ss);
+    printf ("    es: %x\n", regs->es);
+    printf ("    ds: %x\n", regs->ds);
+    printf ("    fs: %x\n", regs->fs);
+    printf ("    gs: %x\n", regs->gs);
+
+    return;
+}
+
+/*
+ * continue_target : context_t -> unit
+ */
+value
+continue_target (value context)
+{
+    CAMLparam1(context);
+
+    context_t ctx;
+
+    decode_context(&ctx, context);
+
+    if ( xendebug_continue(xc_handle, ctx.domain, ctx.vcpu) )
+    {
+        printf("(pdb) continue\n");  fflush(stdout);
+        failwith("continue");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * step_target : context_t -> unit
+ */
+value
+step_target (value context)
+{
+    CAMLparam1(context);
+
+    context_t ctx;
+
+    decode_context(&ctx, context);
+
+    if ( xendebug_step(xc_handle, ctx.domain, ctx.vcpu) )
+    {
+        printf("(pdb) step\n");  fflush(stdout);
+        failwith("step");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+
+
+/*
+ * insert_memory_breakpoint : context_t -> int32 -> int list -> unit
+ */
+value
+insert_memory_breakpoint (value context, value address, value length)
+{
+    CAMLparam3(context, address, length);
+
+    context_t ctx;
+    memory_t my_address = (memory_t) Int32_val(address);
+    int my_length = Int_val(length);
+
+    decode_context(&ctx, context);
+
+    printf ("(pdb) insert memory breakpoint 0x%lx %d\n",
+            my_address, my_length);
+
+    if ( xendebug_insert_memory_breakpoint(xc_handle, ctx.domain, ctx.vcpu,
+                                           my_address, my_length) )
+    {
+        printf("(pdb) error: insert memory breakpoint\n");  fflush(stdout);
+        failwith("insert memory breakpoint");
+    }
+
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * remove_memory_breakpoint : context_t -> int32 -> int list -> unit
+ */
+value
+remove_memory_breakpoint (value context, value address, value length)
+{
+    CAMLparam3(context, address, length);
+
+    context_t ctx;
+
+    memory_t my_address = (memory_t) Int32_val(address);
+    int my_length = Int_val(length);
+
+    printf ("(pdb) remove memory breakpoint 0x%lx %d\n",
+            my_address, my_length);
+
+    decode_context(&ctx, context);
+
+    if ( xendebug_remove_memory_breakpoint(xc_handle, 
+                                           ctx.domain, ctx.vcpu,
+                                           my_address, my_length) )
+    {
+        printf("(pdb) error: remove memory breakpoint\n");  fflush(stdout);
+        failwith("remove memory breakpoint");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * attach_debugger : int -> int -> unit
+ */
+value
+attach_debugger (value domain, value vcpu)
+{
+    CAMLparam2(domain, vcpu);
+
+    int my_domain = Int_val(domain);
+    int my_vcpu = Int_val(vcpu);
+
+    printf ("(pdb) attach domain [%d.%d]\n", my_domain, my_vcpu);
+
+    if ( xendebug_attach(xc_handle, my_domain, my_vcpu) )
+    {
+        printf("(pdb) attach error!\n");  fflush(stdout);
+        failwith("attach error");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+
+/*
+ * detach_debugger : int -> int -> unit
+ */
+value
+detach_debugger (value domain, value vcpu)
+{
+    CAMLparam2(domain, vcpu);
+
+    int my_domain = Int_val(domain);
+    int my_vcpu = Int_val(vcpu);
+
+    printf ("(pdb) detach domain [%d.%d]\n", my_domain, my_vcpu);
+
+    if ( xendebug_detach(xc_handle, my_domain, my_vcpu) )
+    {
+        printf("(pdb) detach error!\n");  fflush(stdout);
+        failwith("detach error");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+
+/*
+ * debugger_status : unit -> unit
+ */
+value
+debugger_status (value unit)
+{
+    CAMLparam1(unit);
+
+    printf ("(pdb) debugger status\n");
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * pause_target : int -> unit
+ */
+value
+pause_target (value domid)
+{
+    CAMLparam1(domid);
+
+    int my_domid = Int_val(domid);
+
+    printf ("(pdb) pause target %d\n", my_domid);
+
+    xc_domain_pause(xc_handle, my_domid);
+
+    CAMLreturn(Val_unit);
+}
+
+/****************************************************************************/
+/****************************************************************************/
+
+/*
+ * query_domain_stop : unit -> (int * int) list
+ */
+value
+query_domain_stop (value unit)
+{
+    CAMLparam1(unit);
+    CAMLlocal3(result, temp, node);
+
+    int max_domains = 20;
+    int dom_list[max_domains];
+    int loop, count;
+
+    count = xendebug_query_domain_stop(xc_handle, dom_list, max_domains);
+    if ( count < 0 )
+    {
+        printf("(pdb) query domain stop!\n");  fflush(stdout);
+        failwith("query domain stop");
+    }
+
+    printf ("QDS: %d\n", count);
+    for (loop = 0; loop < count; loop ++)
+        printf ("  %d %d\n", loop, dom_list[loop]);
+
+    result = caml_alloc(2,0);
+    if ( count > 0 )                                                  /* car */
+    {
+        node = caml_alloc(2,0);
+        Store_field(node, 0, Val_int(dom_list[0]));             /* domain id */
+        Store_field(node, 1, Val_int(0));                            /* vcpu */
+        Store_field(result, 0, node);
+    }
+    else
+    {
+        Store_field(result, 0, Val_int(0));                    
+    }
+    Store_field(result, 1, Val_int(0));                               /* cdr */
+
+    for ( loop = 1; loop < count; loop++ )
+    {
+        temp = result;
+        result = caml_alloc(2,0);
+        node = caml_alloc(2,0);
+        Store_field(node, 0, Val_int(dom_list[loop]));          /* domain id */
+        Store_field(node, 1, Val_int(0));                            /* vcpu */
+        Store_field(result, 0, node);
+        Store_field(result, 1, temp);
+    }
+
+    CAMLreturn(result);
+}
+
+/****************************************************************************/
+/****************************************************************************/
+
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/*
+ * evtchn_open : string -> int -> int -> Unix.file_descr
+ *
+ * OCaml's Unix library doesn't have mknod, so it makes more sense just write
+ * this in C.  This code is from Keir/Andy.
+ */
+value
+evtchn_open (value filename, value major, value minor)
+{
+    CAMLparam3(filename, major, minor);
+
+    char *myfilename = String_val(filename);
+    int   mymajor = Int_val(major);
+    int   myminor = Int_val(minor);
+    int   evtchn_fd;
+    struct stat st;
+    
+    /* Make sure any existing device file links to correct device. */
+    if ( (lstat(myfilename, &st) != 0) ||
+         !S_ISCHR(st.st_mode) ||
+         (st.st_rdev != makedev(mymajor, myminor)) )
+    {
+        (void)unlink(myfilename);
+    }
+
+ reopen:
+    evtchn_fd = open(myfilename, O_RDWR); 
+    if ( evtchn_fd == -1 )
+    {
+        if ( (errno == ENOENT) &&
+             ((mkdir("/dev/xen", 0755) == 0) || (errno == EEXIST)) &&
+             (mknod(myfilename, S_IFCHR|0600, makedev(mymajor,myminor)) == 0) )
+        {
+            goto reopen;
+        }
+        return -errno;
+    }
+
+    CAMLreturn(Val_int(evtchn_fd));
+}
+
+/*
+ * evtchn_bind_virq : int -> int
+ */
+value
+evtchn_bind_virq (value virq)
+{
+    CAMLparam1(virq);
+
+    int port;
+
+    if ( pdb_evtchn_bind_virq(xc_handle, Int_val(virq), &port) < 0 )
+    {
+        printf("(pdb) evtchn_bind_virq error!\n");  fflush(stdout);
+        failwith("evtchn_bind_virq error");
+    }
+
+    CAMLreturn(Val_int(port));
+}
+
+/*
+ * evtchn_bind : Unix.file_descr -> int -> unit
+ */
+value
+evtchn_bind (value fd, value idx)
+{
+    CAMLparam2(fd, idx);
+
+    int myfd = Int_val(fd);
+    int myidx = Int_val(idx);
+
+    if ( xen_evtchn_bind(myfd, myidx) < 0 )
+    {
+        printf("(pdb) evtchn_bind error!\n");  fflush(stdout);
+        failwith("evtchn_bind error");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * evtchn_unbind : Unix.file_descr -> int -> unit
+ */
+value
+evtchn_unbind (value fd, value idx)
+{
+    CAMLparam2(fd, idx);
+
+    int myfd = Int_val(fd);
+    int myidx = Int_val(idx);
+
+    if ( xen_evtchn_unbind(myfd, myidx) < 0 )
+    {
+        printf("(pdb) evtchn_unbind error!\n");  fflush(stdout);
+        failwith("evtchn_unbind error");
+    }
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * evtchn_read : Unix.file_descr -> int
+ */
+value
+evtchn_read (value fd)
+{
+    CAMLparam1(fd);
+
+    u16 v;
+    int bytes;
+    int rc = -1;
+    int myfd = Int_val(fd);
+
+    while ( (bytes = read(myfd, &v, sizeof(v))) == -1 )
+    {
+        if ( errno == EINTR )  continue;
+        rc = -errno;
+        goto exit;
+    }
+    
+    if ( bytes == sizeof(v) )
+        rc = v;
+    
+ exit:
+    CAMLreturn(Val_int(rc));
+}
+
+
+/*
+ * evtchn_close : Unix.file_descr -> unit
+ */
+value
+evtchn_close (value fd)
+{
+    CAMLparam1(fd);
+    int myfd = Int_val(fd);
+
+    (void)close(myfd);
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * evtchn_unmask : Unix.file_descr -> int -> unit
+ */
+value
+evtchn_unmask (value fd, value idx)
+{
+    CAMLparam1(fd);
+
+    int myfd = Int_val(fd);
+    u16 myidx = Int_val(idx);
+
+    (void)write(myfd, &myidx, sizeof(myidx));
+
+    CAMLreturn(Val_unit);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
+
diff --git a/tools/debugger/pdb/pdb_xen.c b/tools/debugger/pdb/pdb_xen.c
new file mode 100644
index 0000000000..36671dacc0
--- /dev/null
+++ b/tools/debugger/pdb/pdb_xen.c
@@ -0,0 +1,93 @@
+/*
+ * pdb_xen.c
+ *
+ * alex ho
+ * http://www.cl.cam.ac.uk/netos/pdb
+ *
+ * PDB interface library for accessing Xen
+ */
+
+#include <xc.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/mman.h>
+
+int
+pdb_open ()
+{
+    int xc_handle = xc_interface_open();
+
+    if ( xc_handle < 0 )
+    {
+        fprintf(stderr, "(pdb) error opening xc interface: %d (%s)\n",
+                errno, strerror(errno));
+    }
+    return xc_handle;
+}
+
+int 
+pdb_close (int xc_handle)
+{
+    int rc;
+
+    
+    if ( (rc = xc_interface_close(xc_handle)) < 0 )
+    {
+        fprintf(stderr, "(pdb) error closing xc interface: %d (%s)\n",
+                errno, strerror(errno));
+    }
+    return rc;
+}
+
+
+int 
+pdb_evtchn_bind_virq (int xc_handle, int virq, int *port)
+{
+    int rc;
+    
+    if ( (rc = xc_evtchn_bind_virq(xc_handle, virq, port) < 0 ) )
+    {
+        fprintf(stderr, "(pdb) error binding virq to event channel: %d (%s)\n",
+                errno, strerror(errno));
+    }
+    return rc;
+}
+
+
+#include <sys/ioctl.h>
+
+/* /dev/xen/evtchn ioctls */
+#define EVTCHN_RESET  _IO('E', 1)                   /* clear & reinit buffer */
+#define EVTCHN_BIND   _IO('E', 2)                   /* bind to event channel */
+#define EVTCHN_UNBIND _IO('E', 3)               /* unbind from event channel */
+
+int
+xen_evtchn_bind (int evtchn_fd, int idx)
+{
+    if ( ioctl(evtchn_fd, EVTCHN_BIND, idx) != 0 )
+        return -errno;
+    
+    return 0;
+}
+
+int 
+xen_evtchn_unbind (int evtchn_fd, int idx)
+{
+    if ( ioctl(evtchn_fd, EVTCHN_UNBIND, idx) != 0 )
+        return -errno;
+
+    return 0;
+}
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/debugger/pdb/server.ml b/tools/debugger/pdb/server.ml
new file mode 100644
index 0000000000..2d3a3c7c86
--- /dev/null
+++ b/tools/debugger/pdb/server.ml
@@ -0,0 +1,219 @@
+(** server.ml
+ *
+ *  PDB server main loop
+ *
+ *  @author copyright (c) 2005 alex ho
+ *  @see <www.cl.cam.ac.uk/netos/pdb> pervasive debugger
+ *  @version 1
+ *)
+
+open Unix
+open Buffer
+
+
+(**
+ * connection_t: The state for each connection.
+ * buffer & length contains bytes that have been read from the sock
+ * but not yet parsed / processed.
+ *)
+type connection_t =
+{ 
+          fd : file_descr;
+  mutable buffer : string;
+  mutable length : int;
+}
+
+
+(**
+ * validate_checksum:  Compute and compare the checksum of a string
+ * against the provided checksum using the gdb serial protocol algorithm.
+ *
+ *)
+let validate_checksum command checksum =
+  let c0 = ref 0 in
+  for loop = 0 to (String.length command - 1) do
+    c0 := !c0 + int_of_char(command.[loop]);
+  done;
+  if (String.length checksum) = 2 
+  then
+    let c1 = Util.int_of_hexchar(checksum.[1]) +
+	     Util.int_of_hexchar(checksum.[0]) * 16 in
+    (!c0 mod 256) = (c1 mod 256)
+  else
+    false
+  
+
+(**
+ * process_input: Oh, joy!  Someone sent us a message.  Let's open the
+ * envelope and see what they have to say.
+ *
+ * This function is a paradigm of inefficiency; it performs as many 
+ * string copies as possible.
+ *)
+let process_input conn sock = 
+  let max_buffer_size = 1024 in
+  let in_string = String.create max_buffer_size in
+
+  let length = read sock in_string 0 max_buffer_size in
+  conn.buffer <- conn.buffer ^ (String.sub in_string 0 length);
+  conn.length <- conn.length + length;
+  let re = Str.regexp "[^\\$]*\\$\\([^#]*\\)#\\(..\\)" in
+
+  begin
+    try
+      let break = String.index conn.buffer '\003' + 1 in
+      print_endline (Printf.sprintf "{{%s}}" (String.escaped conn.buffer));
+
+      (* discard everything seen before the ctrl-c *)
+      conn.buffer <- String.sub conn.buffer break (conn.length - break);
+      conn.length <- conn.length - break;
+
+      (* pause the target *)
+      PDB.pause (PDB.find_context sock);
+
+      (* send a code back to the debugger *)
+      Util.send_reply sock "S05"
+
+    with
+      Not_found -> ()
+  end;
+
+  (* with gdb this is unlikely to loop since you ack each packet *)
+  while ( Str.string_match re conn.buffer 0 ) do
+    let command = Str.matched_group 1 conn.buffer in
+    let checksum = Str.matched_group 2 conn.buffer in
+    let match_end = Str.group_end 2 in
+
+    begin
+      match validate_checksum command checksum with
+      | true -> 
+	  begin
+	    Util.write_character sock '+';
+	    try
+	      let reply = Debugger.process_command command sock in
+	      print_endline (Printf.sprintf "[%s] %s -> \"%s\"" 
+			       (Util.get_connection_info sock)
+			       (String.escaped command) 
+			       (String.escaped reply));
+	      Util.send_reply sock reply
+	    with
+	      Debugger.No_reply ->
+		print_endline (Printf.sprintf "[%s] %s -> null" 
+				 (Util.get_connection_info sock)
+				 (String.escaped command))
+	  end
+      | false ->
+	  Util.write_character sock '-';
+    end;
+
+    conn.buffer <- String.sub conn.buffer match_end (conn.length - match_end);
+    conn.length <- conn.length - match_end;
+  done;
+  if length = 0 then raise End_of_file
+
+
+
+(** main_server_loop.
+ *
+ *  connection_hash is a hash (duh!) with one connection_t for each
+ *  open connection.
+ * 
+ *  in_list is a list of active sockets.  it also contains two 
+ *  magic entries: server_sock for accepting new entries and 
+ *  event_sock for Xen event channel asynchronous notifications.
+ *)
+let main_server_loop sockaddr =
+  let connection_hash = Hashtbl.create 10
+  in
+  let process_socket svr_sock sockets sock =
+    let (new_list, closed_list) = sockets in
+    if sock == svr_sock
+    then
+      begin
+	let (new_sock, caller) = accept sock in
+	print_endline (Printf.sprintf "[%s] new connection from %s"
+			              (Util.get_connection_info sock)
+			              (Util.get_connection_info new_sock));
+	Hashtbl.add connection_hash new_sock 
+	            {fd=new_sock; buffer=""; length = 0};
+	PDB.add_default_context new_sock;
+	(new_sock :: new_list, closed_list)
+      end
+    else
+      begin
+	try
+	  match PDB.find_context sock with
+	  | PDB.Event_channel ->
+	      print_endline (Printf.sprintf "[%s] event channel"
+			                    (Util.get_connection_info sock));
+	      Debugger.process_evtchn sock;
+	      (new_list, closed_list)
+	  | _ ->
+	      let conn = Hashtbl.find connection_hash sock in
+	      process_input conn sock;
+	      (new_list, closed_list)
+	with
+	| Not_found -> 
+	    print_endline "error: (main_svr_loop) context not found";
+	    PDB.debug_contexts ();
+	    raise Not_found
+	| End_of_file -> 
+	    print_endline (Printf.sprintf "[%s] close connection from %s"
+  			                   (Util.get_connection_info sock)
+			                   (Util.get_connection_info sock));
+	    PDB.delete_context sock;
+	    Hashtbl.remove connection_hash sock;
+	    close sock;
+	    (new_list, sock :: closed_list)
+      end
+  in
+  let rec helper in_list server_sock =
+  (*
+   * List.iter (fun x->Printf.printf "{%s} " 
+   *                                (Util.get_connection_info x)) in_list;   
+   * Printf.printf "\n";
+   *)
+    let (rd_list, _, _) = select in_list [] [] (-1.0) in 
+    let (new_list, closed_list) = List.fold_left (process_socket server_sock)
+	                                         ([],[]) rd_list  in
+    let merge_list = Util.list_remove (new_list @ in_list) closed_list  in
+    helper merge_list server_sock
+  in
+  try
+    let server_sock = socket (domain_of_sockaddr sockaddr) SOCK_STREAM 0 in
+    setsockopt server_sock SO_REUSEADDR true;
+    bind server_sock sockaddr;
+    listen server_sock 2;
+
+    PDB.open_debugger ();
+    let event_sock = Evtchn.setup () in
+    PDB.add_context event_sock "event channel" [];
+    helper [server_sock; event_sock] server_sock
+  with
+  | Sys.Break ->
+      print_endline "break: cleaning up";
+      PDB.close_debugger ();
+      Hashtbl.iter (fun sock conn -> close sock) connection_hash
+  | Unix_error(e,err,param) -> 
+      Printf.printf "unix error: [%s][%s][%s]\n" (error_message e) err param
+  | Sys_error s -> Printf.printf "sys error: [%s]\n" s
+  | Failure s -> Printf.printf "failure: [%s]\n" s
+  | End_of_file -> Printf.printf "end of file\n"
+
+
+let get_port () =
+  if (Array.length Sys.argv) = 2 
+  then
+    int_of_string Sys.argv.(1)
+  else
+    begin
+      print_endline (Printf.sprintf "syntax error: %s <port>" Sys.argv.(0));
+      exit 1
+    end
+
+
+let main =
+  let address = inet_addr_any in
+  let port = get_port () in
+  main_server_loop (ADDR_INET(address, port))
+