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#!/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"])
])
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