From b5f1895aae096836d6e8e155ee289e1b10fcabcb Mon Sep 17 00:00:00 2001
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From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Date: Sat, 10 Oct 2015 23:17:44 +0200
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Subject: [PATCH] configure.ac: use link instead of compile for gcc flags test
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The logic that tests whether gcc supports or not certain flags uses
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AC_COMPILE_IFELSE(). However, when checking for stack smashing
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protection support, an AC_LINK_IFELSE() test is needed, since the
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build might work but not the link stage if certain libraries are
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missing for proper stack smashing protection support.
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Therefore, this commit switches to use AC_LINK_IFELSE().
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[Upstream commit: https://github.com/rpm-software-management/rpm/commit/b5f1895aae096836d6e8e155ee289e1b10fcabcb]
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Signed-off-by: James Knight <james.d.knight@live.com>
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---
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configure.ac | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/configure.ac b/configure.ac
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index 6ece8c9fd..822294c3f 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -43,7 +43,7 @@ if test "$GCC" = yes; then
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echo
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for flag in $cflags_to_try; do
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CFLAGS="$CFLAGS $flag -Werror"
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- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[return 0;]])],[
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+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[return 0;]])],[
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echo " $flag"
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RPMCFLAGS="$RPMCFLAGS $flag"
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],[])
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