| # |
| # 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 |
| ]) |
