id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10446	boost 1.56 compile fail with atomics failure	niqingliang2003@…	timblechmann	"using gcc 4.9.1 with poky, cross compile boost 1.56 for s3c6410.
-march=armv6

error info:
libs/atomic/src/lockpool.cpp:127:5: error: 'thread_fence' is not a member of 'boost::atomics::detail'
libs/atomic/src/lockpool.cpp:138:5: error: 'signal_fence' is not a member of 'boost::atomics::detail'


after dig into it, I found that:
the marco 'BOOST_ATOMIC_FLAG_LOCK_FREE' is 0, so it don't include 'operations_lockfree.hpp' which has 'thread_fence' and 'signal_fence', but pthread.h at line 21.

in file 'caps_gcc_atomic.hpp', 'BOOST_ATOMIC_FLAG_LOCK_FREE' is set to '0', but at the end of 'caps_gcc_atomic.hpp', it defined 'BOOST_ATOMIC_THREAD_FENCE' as 2.

so the conflict is: BOOST_ATOMIC_THREAD_FENCE and BOOST_ATOMIC_FLAG_LOCK_FREE

I think 'BOOST_ATOMIC_THREAD_FENCE' should depend on 'BOOST_ATOMIC_FLAG_LOCK_FREE', do you think so?
"	Bugs	closed	To Be Determined	atomic	Boost 1.56.0	Problem	fixed	atomic	niqingliang2003@… Andrey.Semashev@…