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#!/usr/bin/m4
dnl Check whether ld supports -O1
AC_DEFUN([PAM_LD_O1], [dnl
AC_CACHE_CHECK([whether ld supports -O1],
[pam_cv_ld_O1],
[saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,-O1"
AC_LINK_IFELSE([AC_LANG_PROGRAM(,)],
[pam_cv_ld_O1=yes],
[pam_cv_ld_O1=no])
LDFLAGS="$saved_LDFLAGS"])
AS_IF([test $pam_cv_ld_O1 = yes],
[LDFLAGS="$LDFLAGS -Wl,-O1"])
])
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