| Reid Spencer | 491f681 | 2004-09-07 06:56:14 +0000 | [diff] [blame^] | 1 | # |
| 2 | # Determine if the system can handle the -R option being passed to the linker. |
| 3 | # |
| 4 | # This macro is specific to LLVM. |
| 5 | # |
| 6 | AC_DEFUN([AC_LINK_USE_R], |
| 7 | [ |
| 8 | AC_MSG_CHECKING([for compiler -Wl,-R<path> option]) |
| 9 | AC_LANG_SAVE |
| 10 | AC_LANG_C |
| 11 | oldcflags="$CFLAGS" |
| 12 | CFLAGS="$CFLAGS -Wl,-R." |
| 13 | AC_LINK_IFELSE([int main() { return 0; }],[ac_cv_link_use_r=yes],[ac_cv_link_use_r=no]) |
| 14 | CFLAGS="$oldcflags" |
| 15 | AC_LANG_RESTORE |
| 16 | AC_MSG_RESULT($ac_cv_link_use_r) |
| 17 | if test "$ac_cv_link_use_r" = yes |
| 18 | then |
| 19 | 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.]) |
| 20 | fi |
| 21 | ]) |
| 22 | |
| 23 | |