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| author |  Fabrice Fontaine <fontaine.fabrice@gmail.com> | 2018-08-21 23:25:47 +0200 |
|---|---|---|
| committer |  Thomas Petazzoni <thomas.petazzoni@bootlin.com> | 2018-10-10 21:50:09 +0200 |
| commit | f3a483a81be43b0ff674400e11900605969f8f1c (patch) | |
| tree | 9aed8d0c6e24e4324c9bfc2c825c3700f70f4185 /package | |
| parent | 1554db330d1c8dda9926762a666a3a059d51c1b7 (diff) | |
| download | buildroot-f3a483a81be43b0ff674400e11900605969f8f1c.tar.gz buildroot-f3a483a81be43b0ff674400e11900605969f8f1c.tar.bz2 | |
boost: context needs C++11
Without std=c++11, mutex is not always correctly detected with gcc 4.7,
4.8 or even 5.x. As a result, boost_thread is wrongly selected by
boost_context.
mutex is available on gcc 4.7.x, the issue is that boost does not
correctly detect it because -std=c++11 was missing.
Keep thread select for gcc version lower or equal to 4.6. mutex is
available since gcc 4.4 (with std=c++0x) but common buildroot practice
for C++11 packages is to have a dependency on gcc 4.7, 4.8 or 4.9
depending on the requested C++11 features.
Fixes:
- http://autobuild.buildroot.net/results/fb046c04fe18bec973d120e4ab33971f32ba5769
- http://autobuild.buildroot.net/results/99f1a255b78a973faeb8bf3b94d78efc54426a8b
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Diffstat (limited to 'package')
| -rw-r--r-- | package/boost/Config.in | 2 | ||||
| -rw-r--r-- | package/boost/boost.mk | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/package/boost/Config.in b/package/boost/Config.in index 389592fd32..e0bff17f75 100644 --- a/package/boost/Config.in +++ b/package/boost/Config.in @@ -83,7 +83,7 @@ config BR2_PACKAGE_BOOST_CONTEXT bool "boost-context" depends on BR2_PACKAGE_BOOST_CONTEXT_ARCH_SUPPORTS depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 - select BR2_PACKAGE_BOOST_THREAD if !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 + select BR2_PACKAGE_BOOST_THREAD if !BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 help C++11 context switching library. diff --git a/package/boost/boost.mk b/package/boost/boost.mk index 0adad89297..2ce6bbb75f 100644 --- a/package/boost/boost.mk +++ b/package/boost/boost.mk @@ -61,6 +61,11 @@ 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 |