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-rw-r--r--Makefile.in4
-rw-r--r--README8
-rwxr-xr-xconfigure29
3 files changed, 21 insertions, 20 deletions
diff --git a/Makefile.in b/Makefile.in
index 70732b1ba..b9914e584 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -24,7 +24,7 @@ backend=@backend@
libdirsuffix=@libdirsuffix@
libdirreverse=@libdirreverse@
gcc_src_dir=@gcc_src_dir@
-llvm_prefix=@llvm_prefix@
+LLVM_CONFIG=@llvm_config@
LDFLAGS=@LDFLAGS@
LIBBACKTRACE=@backtrace_lib@
@@ -183,8 +183,6 @@ oread-gcc: force
#################### For llvm backend ##############################
-LLVM_CONFIG=$(llvm_prefix)/bin/llvm-config
-
GHDL_LLVM_INCFLAGS=$(GHDL_COMMON_INCFLAGS) -aI$(srcdir)/src/ghdldrv -aI$(srcdir)/src/grt -aI$(srcdir)/src/ortho -aI$(srcdir)/src/ortho/llvm
all.llvm: ghdl1-llvm ghdl_llvm grt-all libs.vhdl.llvm
diff --git a/README b/README
index ab8b5eea5..65c29fc76 100644
--- a/README
+++ b/README
@@ -131,9 +131,11 @@ Building with the llvm backend
You need to build and install
llvm version 3.5 [do not modify this line as this is read by scripts].
-First configure ghdl and specify where llvm is installed
-$ ./configure --with-llvm=PREFIX
- where PREFIX/bin/llvm-config is present
+First configure ghdl with '--with-llvm-config'
+$ ./configure --with-llvm-config
+
+If llvm-config is not in your path, you can specify it:
+$ ./configure --with-llvm-config=LLVM_INSTALL/bin/llvm-config
If you want to have stack backtraces on errors (like assert failure or
index of out bounds), you need to configure and build libbacktrace from gcc
diff --git a/configure b/configure
index af0ea2978..a935b2dfc 100755
--- a/configure
+++ b/configure
@@ -13,14 +13,14 @@ libdirsuffix=lib/ghdl
libdirreverse=../..
gcc_src_dir=
gcc_version=unknown
-llvm_prefix=
+llvm_config=
backtrace_lib=
build=
show_help=no
progname=$0
-subst_vars="CC GNATMAKE CFLAGS LDFLAGS build srcdir prefix backend libdirsuffix libdirreverse gcc_src_dir llvm_prefix backtrace_lib"
+subst_vars="CC GNATMAKE CFLAGS LDFLAGS build srcdir prefix backend libdirsuffix libdirreverse gcc_src_dir llvm_config backtrace_lib"
# Find srcdir
srcdir=`dirname $progname`
@@ -68,7 +68,10 @@ for opt do
--prefix=*) prefix="$optarg";;
--srcdir=*) srcdir="$optarg";;
--with-gcc=*) gcc_src_dir="$optarg"; backend=gcc;;
- --with-llvm=*) llvm_prefix="$optarg"; backend=llvm;;
+ --with-llvm=*) echo "--with-llvm is deprecated, use --with-llvm-config";
+ llvm_config="$optarg/bin/llvm-config"; backend=llvm;;
+ --with-llvm-config) llvm_config="llvm-config"; backend=llvm;;
+ --with-llvm-config=*) llvm_config="$optarg"; backend=llvm;;
--with-backtrace-lib=*) backtrace_lib="$optarg";;
-h|-help|--help) show_help=yes;;
*) echo "$0: unknown option $opt; try $0 --help"
@@ -83,13 +86,12 @@ cat <<EOF
Usage: configure [options]
Options [defaults in brackets]:
- --prefix=PREFIX install in PREFIX [$prefix]
- --srcdir=SRCDIR source code path [$srcdir]
- --with-gcc=DIR use gcc backend from DIR (needs gcc $gcc_version)
- --with-llvm=DIR use llvm installed in DIR (needs llvm $llvm_version)
- --with-backtrace-lib=LIB.a
- link with libbacktrace LIB.a to display a backtrace on
- errors (only for llvm).
+ --prefix=PREFIX install in PREFIX [$prefix]
+ --srcdir=SRCDIR source code path [$srcdir]
+ --with-gcc=DIR use gcc backend from DIR (needs gcc $gcc_version)
+ --with-llvm-config=PATH use llvm from PATH (needs llvm $llvm_version)
+ --with-backtrace-lib=LIB.a link with libbacktrace LIB.a to display a
+ backtrace on errors (only for llvm).
EOF
exit 0
fi
@@ -142,14 +144,13 @@ fi
# For llvm backend, check llvm-config
if test $backend = llvm; then
- llvm_cmd="$llvm_prefix/bin/llvm-config --version"
- llvm_ver=`$llvm_cmd 2>/dev/null`
+ llvm_ver=`"$llvm_config" --version 2>/dev/null`
if [ $? != 0 ]; then
- echo "cannot run $llvm_cmd"
+ echo "cannot run $llvm_config"
exit 1
fi
if ! check_version $llvm_version $llvm_ver; then
- echo "Mismatch llvm version $llvm_ver from $llvm_prefix"
+ echo "Mismatch llvm version $llvm_ver from $llvm_config"
echo "Need llvm version $llvm_version"
exit 1
fi