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toolchain: fix detection of SSP support

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GCC issues a warning message if -fstack-protector is passed but SSP is
not available, so in order to force the compilation to fail we must also
pass -Werror.

All external toolchains were verified. The only one whose configuration
incorrectly selected BR2_TOOLCHAIN_HAS_SSP was CodeSourcery NIOSII.

Fixes:
  http://autobuild.buildroot.net/results/ce8fe8ac9cf0db01ae15d476ea714ff176965cfb
  http://autobuild.buildroot.net/results/09ce8f05e28c0219f499ce55130e896cae0c8b45

Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Carlos Santos 2018-03-25 00:59:52 -03:00 committed by Thomas Petazzoni
parent 05dc106db4
commit c868095681
2 changed files with 1 additions and 2 deletions
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2
toolchain/helpers.mk
View File

@ -421,7 +421,7 @@ check_unusable_toolchain = \
#
check_toolchain_ssp = \
__CROSS_CC=$(strip $1) ; \
__HAS_SSP=`echo 'void main(){}' | $${__CROSS_CC} -fstack-protector -x c - -o $(BUILD_DIR)/.br-toolchain-test.tmp >/dev/null 2>&1 && echo y` ; \
__HAS_SSP=`echo 'void main(){}' | $${__CROSS_CC} -Werror -fstack-protector -x c - -o $(BUILD_DIR)/.br-toolchain-test.tmp >/dev/null 2>&1 && echo y` ; \
if [ "$(BR2_TOOLCHAIN_HAS_SSP)" != "y" -a "$${__HAS_SSP}" = "y" ] ; then \
echo "SSP support available in this toolchain, please enable BR2_TOOLCHAIN_EXTERNAL_HAS_SSP" ; \
exit 1 ; \

1
toolchain/toolchain-external/toolchain-external-codesourcery-niosII/Config.in
View File

@ -5,7 +5,6 @@ config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII
depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
depends on !BR2_STATIC_LIBS
select BR2_TOOLCHAIN_EXTERNAL_GLIBC
select BR2_TOOLCHAIN_HAS_SSP
select BR2_TOOLCHAIN_HAS_NATIVE_RPC
select BR2_INSTALL_LIBSTDCPP
select BR2_HOSTARCH_NEEDS_IA32_LIBS