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Use IMP_LIB_EXT when checking for LLVM shared libraries

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When checking for LLVM shared libraries, use IMP_LIB_EXT for the extension for
shared libraries appropriate to the target, rather than hardcoding '.so'

Also add some comments to explain why we have this circus of pain.

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
This commit is contained in:
Jon TURNEY 2015-09-04 14:00:19 +01:00 • committed by Emil Velikov
parent 2c3007652d
commit adeba943e1
1 changed files with 27 additions and 6 deletions
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33
configure.ac
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@ -533,15 +533,32 @@ AM_CONDITIONAL(HAVE_COMPAT_SYMLINKS, test "x$HAVE_COMPAT_SYMLINKS" = xyes)
dnl
dnl library names
dnl
dnl Unfortunately we need to do a few things that libtool can't help us with,
dnl so we need some knowledge of shared library filenames:
dnl
dnl LIB_EXT is the extension used when creating symlinks for alternate
dnl filenames for a shared library which will be dynamically loaded
dnl
dnl IMP_LIB_EXT is the extension used when checking for the presence of a
dnl the file for a shared library we wish to link with
dnl
case "$host_os" in
darwin* )
LIB_EXT='dylib' ;;
LIB_EXT='dylib'
IMP_LIB_EXT=$LIB_EXT
;;
cygwin* )
LIB_EXT='dll' ;;
LIB_EXT='dll'
IMP_LIB_EXT='dll.a'
;;
aix* )
LIB_EXT='a' ;;
LIB_EXT='a'
IMP_LIB_EXT=$LIB_EXT
;;
* )
LIB_EXT='so' ;;
LIB_EXT='so'
IMP_LIB_EXT=$LIB_EXT
;;
esac
AC_SUBST([LIB_EXT])
@ -2168,10 +2185,14 @@ if test "x$MESA_LLVM" != x0; then
LLVM_LIBS="`$LLVM_CONFIG --libs ${LLVM_COMPONENTS}`"
dnl llvm-config may not give the right answer when llvm is a built as a
dnl single shared library, so we must work the library name out for
dnl ourselves.
dnl (See https://llvm.org/bugs/show_bug.cgi?id=6823)
if test "x$enable_llvm_shared_libs" = xyes; then
dnl We can't use $LLVM_VERSION because it has 'svn' stripped out,
LLVM_SO_NAME=LLVM-`$LLVM_CONFIG --version`
AS_IF([test -f "$LLVM_LIBDIR/lib$LLVM_SO_NAME.so"], [llvm_have_one_so=yes])
AS_IF([test -f "$LLVM_LIBDIR/lib$LLVM_SO_NAME.$IMP_LIB_EXT"], [llvm_have_one_so=yes])
if test "x$llvm_have_one_so" = xyes; then
dnl LLVM was built using auto*, so there is only one shared object.
@ -2179,7 +2200,7 @@ if test "x$MESA_LLVM" != x0; then
else
dnl If LLVM was built with CMake, there will be one shared object per
dnl component.
AS_IF([test ! -f "$LLVM_LIBDIR/libLLVMTarget.so"],
AS_IF([test ! -f "$LLVM_LIBDIR/libLLVMTarget.$IMP_LIB_EXT"],
[AC_MSG_ERROR([Could not find llvm shared libraries:
Please make sure you have built llvm with the --enable-shared option
and that your llvm libraries are installed in $LLVM_LIBDIR