package/rpm/0001-configure-ac-use-link-instead-of-compile-for-gcc-flags-test.patch

From b5f1895aae096836d6e8e155ee289e1b10fcabcb Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sat, 10 Oct 2015 23:17:44 +0200
Subject: [PATCH] configure.ac: use link instead of compile for gcc flags test

The logic that tests whether gcc supports or not certain flags uses
AC_COMPILE_IFELSE(). However, when checking for stack smashing
protection support, an AC_LINK_IFELSE() test is needed, since the
build might work but not the link stage if certain libraries are
missing for proper stack smashing protection support.

Therefore, this commit switches to use AC_LINK_IFELSE().

[Upstream commit: https://github.com/rpm-software-management/rpm/commit/b5f1895aae096836d6e8e155ee289e1b10fcabcb]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: James Knight <james.d.knight@live.com>
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 6ece8c9fd..822294c3f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,7 +43,7 @@ if test "$GCC" = yes; then
     echo
     for flag in $cflags_to_try; do
         CFLAGS="$CFLAGS $flag -Werror"
-        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[return 0;]])],[
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[return 0;]])],[
                 echo "   $flag"
                 RPMCFLAGS="$RPMCFLAGS $flag"
         ],[])