diff options
Diffstat (limited to 'conf/m4/plptools/PLP_CHECK_COMPILERS.m4')
| -rw-r--r-- | conf/m4/plptools/PLP_CHECK_COMPILERS.m4 | 299 |
1 files changed, 136 insertions, 163 deletions
diff --git a/conf/m4/plptools/PLP_CHECK_COMPILERS.m4 b/conf/m4/plptools/PLP_CHECK_COMPILERS.m4 index 40eb216..b665a32 100644 --- a/conf/m4/plptools/PLP_CHECK_COMPILERS.m4 +++ b/conf/m4/plptools/PLP_CHECK_COMPILERS.m4 @@ -1,192 +1,165 @@ -dnl -dnl Check for various compiler options -dnl AC_DEFUN(PLP_CHECK_COMPILERS, [ - dnl this is somehow a fat lie, but prevents other macros from double checking - AC_PROVIDE([AC_PROG_CC]) - AC_PROVIDE([AC_PROG_CPP]) - AC_REQUIRE([PLP_HELP_MSG]) - PLP_HELP_MSG([Generic build options:]) - AC_ARG_ENABLE(debug,[ --enable-debug creates debugging code [default=no]], - [ - if test $enableval = "no"; dnl - then ac_use_debug_code="no" - else ac_use_debug_code="yes" + AC_ARG_ENABLE(debug,[ --enable-debug enables debug symbols [default=no]], + [ + if test $enableval = "no"; dnl + then + plp_use_debug_code="no" + plp_use_debug_define=yes + else + plp_use_debug_code="yes" + plp_use_debug_define=no fi - ], [ac_use_debug_code="no"]) + ], + [plp_use_debug_code="no" + plp_use_debug_define=no + ]) + + dnl Just for configure --help + AC_ARG_ENABLE(dummyoption,[ --disable-debug disables debug output and debug symbols [default=no]],[],[]) AC_ARG_ENABLE(strict,[ --enable-strict compiles with strict compiler options (may not work!)], - [ - if test $enableval = "no"; then - ac_use_strict_options="no" - else - ac_use_strict_options="yes" + [ + if test $enableval = "no"; then + plp_use_strict_options="no" + else + plp_use_strict_options="yes" fi - ], [ac_use_strict_options="no"]) - -dnl this was AC_PROG_CC. I had to include it manualy, since I had to patch it - AC_MSG_CHECKING(for a C-Compiler) - dnl if there is one, print out. if not, don't matter - AC_MSG_RESULT($CC) - - if test -z "$CC"; then AC_CHECK_PROG(CC, gcc, gcc) fi - if test -z "$CC"; then AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) fi - if test -z "$CC"; then AC_CHECK_PROG(CC, xlc, xlc) fi - test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) - - AC_PROG_CC_WORKS - AC_PROG_CC_GNU - - if test $ac_cv_prog_gcc = yes; then - GCC=yes - else - GCC= - fi - - if test -z "$CFLAGS"; then - if test "$ac_use_debug_code" = "yes"; then - AC_PROG_CC_G - if test $ac_cv_prog_cc_g = yes; then - CFLAGS="-g" - fi + ], [plp_use_strict_options="no"]) + + AC_ARG_ENABLE(profile,[ --enable-profile creates profiling infos [default=no]], + [plp_use_profiling=$enableval], + [plp_use_profiling="no"] + ) + + dnl this prevents stupid AC_PROG_CC to add "-g" to the default CFLAGS + CFLAGS=" $CFLAGS" + + AC_PROG_CC + + if test "$GCC" = "yes"; then + if test "$plp_use_debug_code" = "yes"; then + CFLAGS="-g -O2 $CFLAGS" + case $host in + *-*-linux-gnu) + CFLAGS="-Wpointer-arith $CFLAGS" + ;; + esac else - if test "$GCC" = "yes"; then - CFLAGS="-O2" - else - CFLAGS="" - fi + CFLAGS="-O2 $CFLAGS" fi - - if test "$GCC" = "yes"; then - CFLAGS="$CFLAGS -Wall" - - if test "$ac_use_strict_options" = "yes"; then - CFLAGS="$CFLAGS -W -ansi -pedantic" - fi + if test "$plp_use_strict_options" = "yes"; then + CFLAGS="-ansi -Wall -W -pedantic -Wshadow -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS" fi - else - AC_MSG_RESULT(Using predefined CFLAGS $CFLAGS) fi - case "$host" in - *-*-sysv4.2uw*) CFLAGS="$CFLAGS -D_UNIXWARE";; - esac - - # - # If debugging is off, strip all programs - # - if test "$ac_use_debug_code" = "no"; then - if test -z "$LDFLAGS" && test "$GCC" = "yes"; then - LDFLAGS="-s" - LIBDEBUG="" - fi - else - AC_DEFINE_UNQUOTED(DEBUG) - LIBDEBUG="--debug" + if test "$plp_use_debug_define" = "yes"; then + CFLAGS="-DNDEBUG $CFLAGS" fi - AC_SUBST(LIB_DEBUG) -dnl this is AC_PROG_CPP. I had to include it here, since autoconf checks -dnl dependecies between AC_PROG_CPP and AC_PROG_CC (or is it automake?) + case "$host" in + *-*-sysv4.2uw*) CFLAGS="-D_UNIXWARE $CFLAGS";; + *-*-sysv5uw7*) CFLAGS="-D_UNIXWARE7 $CFLAGS";; + esac - AC_MSG_CHECKING(how to run the C preprocessor) - # On Suns, sometimes $CPP names a directory. - if test -n "$CPP" && test -d "$CPP"; then - CPP= - fi - if test -z "$CPP"; then - AC_CACHE_VAL(ac_cv_prog_CPP, - [ # This must be in double quotes, not single quotes, because CPP may get - # substituted into the Makefile and "${CC-cc}" will confuse make. - CPP="${CC-cc} -E" - # On the NeXT, cc -E runs the code through the compiler's parser, - # not just through cpp. - dnl Use a header file that comes with gcc, so configuring glibc - dnl with a fresh cross-compiler works. - AC_TRY_CPP([#include <assert.h> - Syntax Error], , - CPP="${CC-cc} -E -traditional-cpp" - AC_TRY_CPP([#include <assert.h> - Syntax Error], , CPP=/lib/cpp)) - ac_cv_prog_CPP="$CPP"])dnl - CPP="$ac_cv_prog_CPP" + if test "$plp_use_debug_code" = "no"; then + if test -z "$LDFLAGS" && test "$GCC" = "yes"; then + LDFLAGS="-s" + fi + AC_DEFINE_UNQUOTED(NDEBUG,1,[Define this to disable assert macro]) + LIBDEBUG="" else - ac_cv_prog_CPP="$CPP" + AC_DEFINE_UNQUOTED(DEBUG,1,[Define this to enable debugging code]) + LIBDEBUG="--debug" fi - AC_MSG_RESULT($CPP) - AC_SUBST(CPP)dnl + AC_SUBST(LIBDEBUG) + CXXFLAGS=" $CXXFLAGS" - AC_MSG_CHECKING(for a C++-Compiler) - dnl if there is one, print out. if not, don't matter - AC_MSG_RESULT($CXX) - - if test -z "$CXX"; then AC_CHECK_PROG(CXX, g++, g++) fi - if test -z "$CXX"; then AC_CHECK_PROG(CXX, CC, CC) fi - if test -z "$CXX"; then AC_CHECK_PROG(CXX, xlC, xlC) fi - if test -z "$CXX"; then AC_CHECK_PROG(CXX, DCC, DCC) fi - test -z "$CXX" && AC_MSG_ERROR([no acceptable C++-compiler found in \$PATH]) + AC_PROG_CXX - AC_PROG_CXX_WORKS - AC_PROG_CXX_GNU + if test "$GXX" = "yes"; then + if test "$plp_use_debug_code" = "yes"; then + CXXFLAGS="-g -O2 -Wpointer-arith -Wmissing-prototypes $CXXFLAGS" - if test $ac_cv_prog_gxx = yes; then - GXX=yes - else - AC_MSG_CHECKING(whether we are using SPARC CC) - GXX= - cat > conftest.C << EOF -#ifdef __SUNPRO_CC - yes; -#endif -EOF - - ac_try="$CXX -E conftest.C" - if { (eval echo configure:__online__: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } | egrep yes >/dev/null 2>&1; then - ac_cv_prog_CC=yes - else - ac_cv_prog_CC=no - fi - AC_MSG_RESULT($ac_cv_prog_CC) - fi + PLP_CHECK_COMPILER_FLAG(Wno-long-long,[CXXFLAGS="-Wno-long-long $CXXFLAGS"]) + PLP_CHECK_COMPILER_FLAG(Wnon-virtual-dtor,[CXXFLAGS="-Wnon-virtual-dtor $CXXFLAGS"]) + PLP_CHECK_COMPILER_FLAG(fno-builtin,[CXXFLAGS="-fno-builtin $CXXFLAGS"]) - if test -z "$CXXFLAGS"; then - if test "$ac_use_debug_code" = "yes"; then - AC_PROG_CXX_G - if test $ac_cv_prog_cxx_g = yes; then - CXXFLAGS="-g" - fi - if test "$ac_cv_prog_CC" = "yes"; then - CXXFLAGS="$CXXFLAGS -pto" + case $host in dnl + *-*-linux-gnu) + CXXFLAGS="-D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wbad-function-cast -Wcast-align -Wundef $CXXFLAGS" + ;; + esac + + if test "$plp_use_strict_options" = "yes"; then + CXXFLAGS="-ansi -pedantic -W -Wconversion -Wcast-qual -Wwrite-strings -Wbad-function-cast -Wshadow -Wcast-align $CXXFLAGS" fi else - if test "$GXX" = "yes"; then - CXXFLAGS="-O2" - else - if test "$ac_cv_prog_CC" = "yes"; then - CXXFLAGS="-pto -O2" - else - CXXFLAGS="" - fi - fi + CXXFLAGS="-O2 $CXXFLAGS" fi + fi - if test "$GXX" = "yes"; then - CXXFLAGS="$CXXFLAGS -Wall" - - if test "$ac_use_strict_options" = "yes"; then - CXXFLAGS="$CXXFLAGS -W -ansi -Wtraditional -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings -Woverloaded-virtual -Wbad-function-cast -Wsynth" - fi - - if test "$ac_very_strict" = "yes"; then - CXXFLAGS="$CXXFLAGS -Wold-style-cast -Wshadow -Wredundant-decls -Wconversion" - fi - fi + if test "$plp_use_debug_define" = "yes"; then + CXXFLAGS="-DNDEBUG $CXXFLAGS" fi - case "$host" in - *-*-sysv4.2uw*) CXXFLAGS="$CXXFLAGS -D_UNIXWARE";; - esac + if test "$plp_use_profiling" = "yes"; then + PLP_CHECK_COMPILER_FLAG(pg, + [ + CFLAGS="-pg $CFLAGS" + CXXFLAGS="-pg $CXXFLAGS" + ]) + fi + + PLP_CHECK_COMPILER_FLAG(fno-exceptions,[CXXFLAGS="$CXXFLAGS -fno-exceptions"]) + PLP_CHECK_COMPILER_FLAG(fno-check-new, [CXXFLAGS="$CXXFLAGS -fno-check-new"]) + PLP_CHECK_COMPILER_FLAG(fexceptions, [USE_EXCEPTIONS="-fexceptions"], USE_EXCEPTIONS= ) + AC_SUBST(USE_EXCEPTIONS) + dnl obsolete macro - provided to keep things going + USE_RTTI= + AC_SUBST(USE_RTTI) + + case "$host" in + *-*-irix*) test "$GXX" = yes && CXXFLAGS="-D_LANGUAGE_C_PLUS_PLUS -D__LANGUAGE_C_PLUS_PLUS $CXXFLAGS" ;; + *-*-sysv4.2uw*) CXXFLAGS="-D_UNIXWARE $CXXFLAGS";; + *-*-sysv5uw7*) CXXFLAGS="-D_UNIXWARE7 $CXXFLAGS";; + *-*-solaris*) + if test "$GXX" = yes; then + libstdcpp=`$CXX -print-file-name=libstdc++.so` + if test ! -f $libstdcpp; then + AC_MSG_ERROR([You've compiled gcc without --enable-shared. This doesn't work with plptools. Please recompile gcc with --enable-shared to receive a libstdc++.so]) + fi + fi + ;; + esac + AC_VALIDIFY_CXXFLAGS + + AC_PROG_CXXCPP + + # the following is to allow programs, that are known to + # have problems when compiled with -O2 + if test -n "$CXXFLAGS"; then + plp_safe_IFS=$IFS + IFS=" " + NOOPT_CXXFLAGS="" + for i in $CXXFLAGS; do + case $i in + -O*) + ;; + *) + NOOPT_CXXFLAGS="$NOOPT_CXXFLAGS $i" + ;; + esac + done + IFS=$plp_safe_IFS + fi + + AC_SUBST(NOOPT_CXXFLAGS) + THREADED_CFLAGS="-D_REENTRANT $CFLAGS" + THREADED_CXXFLAGS="-D_REENTRANT $CFLAGS" + AC_SUBST(THREADED_CFLAGS) + AC_SUBST(THREADED_CXXFLAGS) ]) + |