diff options
Diffstat (limited to 'llvm/autoconf/m4/link_options.m4')
| -rw-r--r-- | llvm/autoconf/m4/link_options.m4 | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/llvm/autoconf/m4/link_options.m4 b/llvm/autoconf/m4/link_options.m4 new file mode 100644 index 00000000000..66036de433d --- /dev/null +++ b/llvm/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 +]) + |
