[lxc-devel] [lxc/master] configure.ac: fix build on toolchain without SSP

[ffontaine on Github]

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From 226205f0c5e3ef6f5757ffdfddd5b815b217e4ff Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice at gmail.com>
Date: Mon, 11 Nov 2019 22:55:36 +0100
Subject: [PATCH] configure.ac: fix build on toolchain without SSP

Commit 3b5a0eebd4d2efdaa03c6fb11950abfcf081fab8 reverted
3aa7271157d3c815a4426c1f8eaea2f3b6dafa6a resulting in lxc being unable
to be built on toolchain without SSP support

Fixes:
 - http://autobuild.buildroot.org/results/57945f54ffbc5c8764b6891a4516c4907e56ab97

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 645a2166db..4c1a10b3d7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -713,8 +713,8 @@ AX_CHECK_COMPILE_FLAG([-Wcast-align], [CFLAGS="$CFLAGS -Wcast-align"],,[-Werror]
 AX_CHECK_COMPILE_FLAG([-Wstrict-prototypes], [CFLAGS="$CFLAGS -Wstrict-prototypes"],,[-Werror])
 AX_CHECK_COMPILE_FLAG([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-strict-aliasing"],,[-Werror])
 AX_CHECK_COMPILE_FLAG([-fstack-clash-protection], [CFLAGS="$CFLAGS -fstack-clash-protection"],,[-Werror])
-AX_CHECK_COMPILE_FLAG([-fstack-protector-strong], [CFLAGS="$CFLAGS -fstack-protector-strong"],,[-Werror])
-AX_CHECK_COMPILE_FLAG([--param=ssp-buffer-size=4], [CFLAGS="$CFLAGS --param=ssp-buffer-size=4"],,[-Werror])
+AX_CHECK_LINK_FLAG([-fstack-protector-strong], [CFLAGS="$CFLAGS -fstack-protector-strong"],,[-Werror])
+AX_CHECK_LINK_FLAG([--param=ssp-buffer-size=4], [CFLAGS="$CFLAGS --param=ssp-buffer-size=4"],,[-Werror])
 AX_CHECK_COMPILE_FLAG([-g], [CFLAGS="$CFLAGS -g"],,[-Werror])
 AX_CHECK_COMPILE_FLAG([--mcet -fcf-protection], [CFLAGS="$CFLAGS --mcet -fcf-protection"],,[-Werror])
 AX_CHECK_COMPILE_FLAG([-Werror=implicit-function-declaration], [CFLAGS="$CFLAGS -Werror=implicit-function-declaration"],,[-Werror])