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| author | Nick Lewycky <nicholas@mxc.ca> | 2009-03-05 08:20:21 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2009-03-05 08:20:21 +0000 |
| commit | 18f99072a61429cc6aec9bd3dc611867819d962b (patch) | |
| tree | 6dcfde0fba6f2f8201c13ee1a9307f963d3aee88 /autoconf/m4 | |
| parent | 323c58d862cca19e45d07996a5abacd0667f264d (diff) | |
| download | external_llvm-18f99072a61429cc6aec9bd3dc611867819d962b.zip external_llvm-18f99072a61429cc6aec9bd3dc611867819d962b.tar.gz external_llvm-18f99072a61429cc6aec9bd3dc611867819d962b.tar.bz2 | |
Autodetect the availability of -export-dynamic in the linker.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66156 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf/m4')
| -rw-r--r-- | autoconf/m4/link_options.m4 | 41 | ||||
| -rw-r--r-- | autoconf/m4/link_use_r.m4 | 19 |
2 files changed, 41 insertions, 19 deletions
diff --git a/autoconf/m4/link_options.m4 b/autoconf/m4/link_options.m4 new file mode 100644 index 0000000..66036de --- /dev/null +++ b/autoconf/m4/link_options.m4 @@ -0,0 +1,41 @@ +# +# Determine if the system can handle the -R option being passed to the linker. +# +# This macro is specific to LLVM. +# +AC_DEFUN([AC_LINK_USE_R], +[AC_CACHE_CHECK([for compiler -Wl,-R<path> option],[llvm_cv_link_use_r], +[ AC_LANG_PUSH([C]) + oldcflags="$CFLAGS" + CFLAGS="$CFLAGS -Wl,-R." + AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])], + [llvm_cv_link_use_r=yes],[llvm_cv_link_use_r=no]) + CFLAGS="$oldcflags" + AC_LANG_POP([C]) +]) +if test "$llvm_cv_link_use_r" = yes ; then + AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.]) + fi +]) + +# +# Determine if the system can handle the -R option being passed to the linker. +# +# This macro is specific to LLVM. +# +AC_DEFUN([AC_LINK_EXPORT_DYNAMIC], +[AC_CACHE_CHECK([for compiler -Wl,-export-dynamic option], + [llvm_cv_link_use_export_dynamic], +[ AC_LANG_PUSH([C]) + oldcflags="$CFLAGS" + CFLAGS="$CFLAGS -Wl,-export-dynamic" + AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])], + [llvm_cv_link_use_export_dynamic=yes],[llvm_cv_link_use_export_dynamic=no]) + CFLAGS="$oldcflags" + AC_LANG_POP([C]) +]) +if test "$llvm_cv_link_use_export_dynamic" = yes ; then + AC_DEFINE([HAVE_LINK_EXPORT_DYNAMIC],[1],[Define if you can use -Wl,-export-dynamic.]) + fi +]) + diff --git a/autoconf/m4/link_use_r.m4 b/autoconf/m4/link_use_r.m4 deleted file mode 100644 index 30c964e..0000000 --- a/autoconf/m4/link_use_r.m4 +++ /dev/null @@ -1,19 +0,0 @@ -# -# Determine if the system can handle the -R option being passed to the linker. -# -# This macro is specific to LLVM. -# -AC_DEFUN([AC_LINK_USE_R], -[AC_CACHE_CHECK([for compiler -Wl,-R<path> option],[llvm_cv_link_use_r], -[ AC_LANG_PUSH([C]) - oldcflags="$CFLAGS" - CFLAGS="$CFLAGS -Wl,-R." - AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])], - [llvm_cv_link_use_r=yes],[llvm_cv_link_use_r=no]) - CFLAGS="$oldcflags" - AC_LANG_POP([C]) -]) -if test "$llvm_cv_link_use_r" = yes ; then - AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.]) - fi -]) |