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@gmail.com>

diff --git a/configure.ac b/configure.ac
index 3e1b062e6be7b65e8e85b5c6221c2536275d5a15..a31292f7fb4515217465f67ce2571feafc336967 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -705,8 +705,8 @@ 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])