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Diffstat (limited to 'm4/ld-no-undefined.m4')
| -rw-r--r-- | m4/ld-no-undefined.m4 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/m4/ld-no-undefined.m4 b/m4/ld-no-undefined.m4 new file mode 100644 index 0000000..6f342d0 --- /dev/null +++ b/m4/ld-no-undefined.m4 @@ -0,0 +1,15 @@ +#!/usr/bin/m4 +dnl Check whether ld supports --no-undefined + +AC_DEFUN([PAM_LD_NO_UNDEFINED], [dnl + AC_CACHE_CHECK([whether ld supports --no-undefined], + [pam_cv_ld_no_undefined], + [saved_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -Wl,--no-undefined" + AC_LINK_IFELSE([AC_LANG_PROGRAM(,)], + [pam_cv_ld_no_undefined=yes], + [pam_cv_ld_no_undefined=no]) + LDFLAGS="$saved_LDFLAGS"]) + AS_IF([test $pam_cv_ld_no_undefined = yes], + [LDFLAGS="$LDFLAGS -Wl,--no-undefined"]) +]) |