aboutsummaryrefslogtreecommitdiff
path: root/package/boost/boost.mk
diff options
context:
space:
mode:
authorGravatar Fabrice Fontaine <fontaine.fabrice@gmail.com>2018-10-13 00:15:02 +0200
committerGravatar Peter Korsgaard <peter@korsgaard.com>2018-10-26 17:09:51 +0200
commit288b51719314eba2f7eb6101f1a4ed17b433ddad (patch)
tree3ced4c15420b2d7b648542e730d677b1ac346ac6 /package/boost/boost.mk
parent070b183d0cf5da9ec886b0cdd282246e97b6ba40 (diff)
downloadbuildroot-288b51719314eba2f7eb6101f1a4ed17b433ddad.tar.gz
buildroot-288b51719314eba2f7eb6101f1a4ed17b433ddad.tar.bz2
boost: context needs thread if gcc < 6
Commit f3a483a81be43b0ff674400e11900605969f8f1c added -std=c++11 to boost build if context is selected and gcc is at least 4.7 however it has the side effect that cc-tool fails to find boost_system with the following error if context and system is enabled with a gcc greater than 6: configure:16312: /home/dawncrow/buildroot-test/scripts/instance-0/output/host/bin/x86_64-linux-g++ -o conftest -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/home/dawncrow/buildroot-test/scripts/instance-0/output/host/x86_64-buildroot-linux-musl/sysroot/usr/include -L/home/dawncrow/buildroot-test/scripts/instance-0/output/host/x86_64-buildroot-linux-musl/sysroot/usr/lib conftest.o -lboost_system -latomic >&5 conftest.o: In function `boost::system::error_category::std_category::equivalent(int, std::error_condition const&) const': conftest.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition[_ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition]+0x37): undefined reference to `boost::system::detail::generic_category_instance' This error is related to the fact that since boost 1.68 and commit https://github.com/boostorg/system/commit/7b6dcf6ac668e24f11ec5dbc68d1fa0248d964df, boost system headers are now C++14 "by default" with gcc above 6: - https://github.com/boostorg/system/issues/24 - https://github.com/boostorg/system/issues/26 - https://lists.boost.org/Archives/boost/2018/08/242770.php So when building with gcc > 6, cc-tool thinks that boost has generic_category_instance but because boost was compiled with std=c++11, this function will not be in the library causing a link error Instead of "hacking" even more boost, just remove -std=c++11 from boost.mk and select BOOST_THREAD with gcc lower than 6 Fixes: - http://autobuild.buildroot.org/results/fc8f8a64751c751b2b66301967cc008509bbaa70 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Tested-by: Matt Weber <matthew.weber@rockwellcollins.com> Reviewed-by: Ferdinand van Aartsen <ferdinand@ombud.nl> Tested-by: Ferdinand van Aartsen <ferdinand@ombud.nl> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'package/boost/boost.mk')
-rw-r--r--package/boost/boost.mk5
1 files changed, 0 insertions, 5 deletions
diff --git a/package/boost/boost.mk b/package/boost/boost.mk
index 2ce6bbb75f..0adad89297 100644
--- a/package/boost/boost.mk
+++ b/package/boost/boost.mk
@@ -61,11 +61,6 @@ else
BOOST_FLAGS += --without-icu
endif
-# boost-context needs C++11
-ifeq ($(BR2_PACKAGE_BOOST_CONTEXT)$(BR2_TOOLCHAIN_GCC_AT_LEAST_4_7),yy)
-BOOST_TARGET_CXXFLAGS += -std=c++11
-endif
-
ifeq ($(BR2_PACKAGE_BOOST_IOSTREAMS),y)
BOOST_DEPENDENCIES += bzip2 zlib
endif