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Raphael Kubo da Costa ffa6f057b4 Avoid using C11 to build CMake if _Thread_local support is broken 
Support for C11's _Thread_local was introduced in GCC in the 4.9 series,
even though we make the C11 compiler flags available in CMake with GCC
>= 4.6.

FreeBSD's runetype.h uses _Thread_local, which causes CMake's own build
to fail when using GCC < 4.9 and -std=gnu11:

  /usr/include/runetype.h:92:22: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'const'
   extern _Thread_local const _RuneLocale *_ThreadRuneLocale;

Add a test for _Thread_local support and only build CMake itself with
C11 support if it works.

Bug: http://www.cmake.org/Bug/view.php?id=15741
 		2015-09-15 10:51:54 -04:00
..
cm_c11_thread_local.c Avoid using C11 to build CMake if _Thread_local support is broken 2015-09-15 10:51:54 -04:00
cm_c11_thread_local.cmake Avoid using C11 to build CMake if _Thread_local support is broken 2015-09-15 10:51:54 -04:00
cm_cxx11_unordered_map.cmake Use std::unordered_map instead of hash_map where available. 2015-05-19 00:07:02 +02:00
cm_cxx11_unordered_map.cpp Use std::unordered_map instead of hash_map where available. 2015-05-19 00:07:02 +02:00
cm_cxx14_cstdio.cmake Avoid using C++14 to build CMake if cstdio breaks 2015-05-08 11:04:21 -04:00
cm_cxx14_cstdio.cpp Avoid using C++14 to build CMake if cstdio breaks 2015-05-08 11:04:21 -04:00