+ AC_DEFUN([AX_HARDEN_LINKER_FLAGS], [
+ AC_REQUIRE([AX_CHECK_LINK_FLAG])
+ AC_REQUIRE([AX_VCS_CHECKOUT])
+ AC_REQUIRE([AX_DEBUG])
+
+ AS_IF([test "$ac_cv_vcs_checkout" = yes], [
+ AX_CHECK_LINK_FLAG([-Werror])
+ ])
+ AX_CHECK_LINK_FLAG([-z relro -z now])
+ ])