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boost: thread needs atomic if GCC hasn't lock-free

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When gcc has not always lock-free atomic ints:
 - lockfree boost::atomic_flag : no

boost thread needs boost atomic:
output/host/usr/bin/nios2-linux-readelf -d output/staging/usr/lib/libboost_thread.so

Dynamic section at offset 0x2cee0 contains 32 entries:
  Tag        Type                         Name/Value
 0x00000001 (NEEDED)                     Shared library: [libboost_system.so.1.67.0]
 0x00000001 (NEEDED)                     Shared library: [libboost_atomic.so.1.67.0]

Fixes:
 - http://autobuild.buildroot.net/results/5a7db292f1365f27e32695527701d5b827f60092
 - http://autobuild.buildroot.net/results/413dff87f5329d3c5180167a8711cdedea5dec67
 - http://autobuild.buildroot.net/results/a7eb4cbcdbd9412c344f45336dec58c82e84dab9

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Fabrice Fontaine 2018-08-18 00:10:14 +02:00 committed by Thomas Petazzoni
parent 5f6f910cc9
commit e2928dfa08
1 changed files with 1 additions and 0 deletions
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package/boost/Config.in
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@ -313,6 +313,7 @@ config BR2_PACKAGE_BOOST_TEST
config BR2_PACKAGE_BOOST_THREAD
bool "boost-thread"
select BR2_PACKAGE_BOOST_ATOMIC if !BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
select BR2_PACKAGE_BOOST_CHRONO
select BR2_PACKAGE_BOOST_SYSTEM
help