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c0a071e16e
The gcc-runtime recipe builds the gcc libraries including libstdc++ with $TARGET_CC_ARCH flags, which include -march=FOO flags that affect whether atomic instructions are available. This causes an ABI incompatibility when the compiler by default generates code for less capable architectures. For example, gcc-runtime libraries on a Cortex-A8 are built with a different C++11/C++14 mutex implementation than is used code compiled outside OE and without architecture-specific flags. This commit fixes the problem specifically for ABI issues related to atomic instructions available in ARMV6 and subsequent architectures. Other ABI incompatibilities may remain in other architectures. See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62100 (From OE-Core rev: 0ba6ab39f187ecd4261f08e768f365f461384a3a) Signed-off-by: Peter A. Bigot <pab@pabigot.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>