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[PATCH 13/16] Prohibit stack-protection if the compiler is not capable.
- From: Nix <nix at esperi dot org dot uk>
- To: libc-alpha at sourceware dot org
- Date: Sun, 28 Feb 2016 16:41:32 +0000
- Subject: [PATCH 13/16] Prohibit stack-protection if the compiler is not capable.
- Authentication-results: sourceware.org; auth=none
- References: <1456677695-29778-1-git-send-email-nix at esperi dot org dot uk>
From: Nick Alcock <nick.alcock@oracle.com>
We need support for __attribute__ ((__optimize__ ("-fno-stack-protector")))
if -fno-stack-protector is to work reliably.
v4: New.
---
configure.ac | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/configure.ac b/configure.ac
index 55bfe89..97ac691 100644
--- a/configure.ac
+++ b/configure.ac
@@ -665,6 +665,11 @@ AC_SUBST(stack_protector)
AC_SUBST(no_stack_protector)
if test -n "$stack_protector"; then
+ dnl We cannot work without the ability to disable -fstack-protector for
+ dnl specific functions.
+ if test $libc_cv_cc_no_stack_protector = no; then
+ AC_MSG_ERROR([--enable-stack-protector not supported without __attribute__ ((__optimize__ ("-fno-stack-protector"))).])
+ fi
dnl Don't run configure tests with stack-protection on, to avoid problems with
dnl bootstrapping.
no_ssp=-fno-stack-protector
--
2.7.0.198.g6dd47b6