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Disable CRYPTOPP_CXX11_SYNCHRONIZATION for original MinGW 

std::mutex is only available in libstdc++ if _GLIBCXX_HAS_GTHREADS is defined,
which is not the case for original MinGW. Make the existing fix for AIX more
general to fix this. Unfortunately, any C++ header has to be included to
detect the standard library and the otherwise empty <ciso646> is going to be
removed from C++20, so use <cstddef> instead.
pull/531/head
Marcel Raad 2017-11-06 22:44:14 +01:00
parent 8582a8dde4
commit 450903a60d
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GPG Key ID: 07ADACB610D796DA
1 changed files with 9 additions and 12 deletions
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21
config.h
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@ -942,7 +942,15 @@ NAMESPACE_END
#if (CRYPTOPP_MSC_VERSION >= 1700) || (CRYPTOPP_LLVM_CLANG_VERSION >= 30300) || \
(CRYPTOPP_APPLE_CLANG_VERSION >= 50000) || (__INTEL_COMPILER >= 1200) || \
(CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_SYNCHRONIZATION 1
// Hack ahead. New GCC compilers like GCC 6 on AIX 7.0 or earlier as well as original MinGW
// don't have the synchronization gear. However, Wakely's test used for Apple does not work
// on the GCC/AIX combination. Another twist is we need other stuff from C++11,
// like no-except destructors. Dumping preprocessors shows the following may
// apply: http://stackoverflow.com/q/14191566/608639.
# include <cstddef>
# if !defined(__GLIBCXX__) || defined(_GLIBCXX_HAS_GTHREADS)
# define CRYPTOPP_CXX11_SYNCHRONIZATION 1
# endif
#endif // synchronization
// Dynamic Initialization and Destruction with Concurrency ("Magic Statics")
@ -1003,17 +1011,6 @@ NAMESPACE_END
#endif // CRYPTOPP_CXX11
// Hack ahead. New GCC compilers like GCC 6 on AIX 7.0 or earlier don't have the
// synchronization gear. However, Wakely's test used for Apple does not work
// on the GCC/AIX combination. Another twist is we need other stuff from C++11,
// like no-except destructors. Dumping preprocessors shows the following may
// apply: http://stackoverflow.com/q/14191566/608639.
#if defined(_AIX) && defined(__GNUC__)
# if !defined(_GLIBCXX_HAS_GTHREADS)
# undef CRYPTOPP_CXX11_SYNCHRONIZATION
# endif
#endif
#if defined(CRYPTOPP_CXX11_NOEXCEPT)
# define CRYPTOPP_THROW noexcept(false)
# define CRYPTOPP_NO_THROW noexcept(true)