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Pavel Labath 95b9d71eef [cmake] Improve pthread_[gs]etname_np detection code 
Summary:
Due to some android peculiarities, in some build configurations
(statically linked executables targeting older releases) we could detect
the presence of these functions (because they are present in libc.a,
where check_library_exists searches), but then fail to build because the
headers did not include the definition.

This attempts to remedy that by upgrading the check_library_exists to
check_symbol_exists, which will check that the function is declared too.

I am hoping that a more thorough check will make the messy #ifdef we
have accumulated in the code obsolete, so I optimistically try to remove
them.

Reviewers: zturner, kparzysz, danalbert

Subscribers: srhines, mgorny, krytarowski, llvm-commits

Differential Revision: https://reviews.llvm.org/D45359

llvm-svn: 330251
2018-04-18 13:13:27 +00:00
..
modules Revert "build: reserve --color-diagnostics for lld" 2018-04-16 21:57:10 +00:00
platforms [cmake] Fix clang-cl cross-compilation on macOS 2017-12-15 01:05:48 +00:00
config-ix.cmake [cmake] Improve pthread_[gs]etname_np detection code 2018-04-18 13:13:27 +00:00
config.guess Remove Bitrig: LLVM Changes 2017-07-21 22:48:47 +00:00
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