in cmake tests let's treat clang like gcc (same options,
same builtins) in many cases.
* don't check the compiler when
* testing for -fvisibility=hidden support
* testing for HAVE_ABI_CXA_DEMANGLE
* testing for HAVE_GCC_ATOMIC_BUILTINS
* when removing options with string(replace)
* when running ${CC} --version (ignore the error instead)
* run ABI checks for clang
* use "canonical" gcc flags for clang
* fix groonga too
Also:
* add cmake detection for gcc __atomic_* builtins. they might be
supported (__ATOMIC_SEQ_CST is defined), but not for all operand
sizes. In particular, 64-bit atomic load is problematic on i386
* cache check results for Windows
* remove the test for HAVE_CXXABI_H (HAVE_ABI_CXA_DEMANGLE is
suffifient)
Bug#17959689: MAKE GCC AND CLANG GIVE CONSISTENT COMPILATION WARNINGS
Bug#18313717: ENABLE -WERROR IN MAINTANER MODE WHEN COMPILING WITH CLANG
Bug#18510941: REMOVE CMAKE WORKAROUNDS FOR OLDER VERSIONS OF OS X/XCODE
Backport from mysql-5.6 to mysql-5.5
* MYSQL_MAINTAINER_MODE and SAFEMALLOC take values ON/OFF/AUTO
(in all builds, in none, only in debug and platform dependent)
* ./configure prefers RelWithDebInfo unless the user overrides
cmake/maintainer.cmake:
don't do -Werror just yet
config.h.cmake:
according to MSDN PSAPI_VERSION should be 1 in a portable application
mysys/my_thr_init.c:
first, reset THR_KEY_mysys, and then free dbug data,
because dbug data are automacially created on the next dbug call,
unless THR_KEY_mysys is null.
option for specific compilers
Reorganize the maintainer mode cmake code to allow options
for specific compilers. For now, enable -Wcheck for ICC,
but do not turn warnings into errors.
CMakeLists.txt:
Move the code that sets options to cmake/maintainer.cmake
cmake/maintainer.cmake:
Add macros for each specific compiler.
