367 lines
11 KiB
C++
367 lines
11 KiB
C++
/*
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* CompilerDetect.h
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* ----------------
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* Purpose: Detect current compiler and provide readable version test macros.
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* Notes : (currently none)
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#pragma once
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#define MPT_COMPILER_MAKE_VERSION2(version,sp) ((version) * 100 + (sp))
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#define MPT_COMPILER_MAKE_VERSION3(major,minor,patch) ((major) * 10000 + (minor) * 100 + (patch))
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#define MPT_COMPILER_MAKE_VERSION3_BUILD(major,minor,build) ((major) * 10000000 + (minor) * 100000 + (patch))
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#if defined(MPT_COMPILER_GENERIC)
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#undef MPT_COMPILER_GENERIC
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#define MPT_COMPILER_GENERIC 1
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#elif defined(__clang__) && defined(_MSC_VER) && defined(__c2__)
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#define MPT_COMPILER_MSVCCLANGC2 1
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#define MPT_COMPILER_MSVCCLANGC2_VERSION (__c2_version__)
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#define MPT_MSVCCLANGC2_AT_LEAST(major,minor,build) (MPT_COMPILER_MSVCCLANGC2_VERSION >= MPT_COMPILER_MAKE_VERSION3_BUILD((major),(minor),(build)))
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#define MPT_MSVCCLANGC2_BEFORE(major,minor,build) (MPT_COMPILER_MSVCCLANGC2_VERSION < MPT_COMPILER_MAKE_VERSION3_BUILD((major),(minor),(build)))
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#elif defined(__clang__)
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#define MPT_COMPILER_CLANG 1
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#define MPT_COMPILER_CLANG_VERSION MPT_COMPILER_MAKE_VERSION3(__clang_major__,__clang_minor__,__clang_patchlevel__)
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#define MPT_CLANG_AT_LEAST(major,minor,patch) (MPT_COMPILER_CLANG_VERSION >= MPT_COMPILER_MAKE_VERSION3((major),(minor),(patch)))
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#define MPT_CLANG_BEFORE(major,minor,patch) (MPT_COMPILER_CLANG_VERSION < MPT_COMPILER_MAKE_VERSION3((major),(minor),(patch)))
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#if MPT_CLANG_BEFORE(3,4,0)
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#error "clang version 3.4 required"
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#endif
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#if defined(__clang_analyzer__)
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#ifndef MPT_BUILD_ANALYZED
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#define MPT_BUILD_ANALYZED
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#endif
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#endif
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#elif defined(__GNUC__)
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#define MPT_COMPILER_GCC 1
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#define MPT_COMPILER_GCC_VERSION MPT_COMPILER_MAKE_VERSION3(__GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__)
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#define MPT_GCC_AT_LEAST(major,minor,patch) (MPT_COMPILER_GCC_VERSION >= MPT_COMPILER_MAKE_VERSION3((major),(minor),(patch)))
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#define MPT_GCC_BEFORE(major,minor,patch) (MPT_COMPILER_GCC_VERSION < MPT_COMPILER_MAKE_VERSION3((major),(minor),(patch)))
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#if MPT_GCC_BEFORE(4,8,0)
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#error "GCC version 4.8 required"
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#endif
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#elif defined(_MSC_VER)
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#define MPT_COMPILER_MSVC 1
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#if (_MSC_VER >= 1912)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017,5)
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#elif (_MSC_VER >= 1911)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017,3)
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#elif (_MSC_VER >= 1910)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017,0)
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#elif (_MSC_VER >= 1900)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2015,0)
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#elif (_MSC_VER >= 1800)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2013,0)
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#elif (_MSC_VER >= 1700)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2012,0)
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#elif (_MSC_VER >= 1600)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2010,0)
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#elif (_MSC_VER >= 1500)
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2008,0)
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#else
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#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2005,0)
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#endif
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#define MPT_MSVC_AT_LEAST(version,sp) (MPT_COMPILER_MSVC_VERSION >= MPT_COMPILER_MAKE_VERSION2((version),(sp)))
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#define MPT_MSVC_BEFORE(version,sp) (MPT_COMPILER_MSVC_VERSION < MPT_COMPILER_MAKE_VERSION2((version),(sp)))
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#if MPT_MSVC_BEFORE(2015,0)
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#error "MSVC version 2015 required"
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#endif
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#if defined(_PREFAST_)
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#ifndef MPT_BUILD_ANALYZED
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#define MPT_BUILD_ANALYZED
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#endif
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#endif
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#else
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#define MPT_COMPILER_GENERIC 1
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#endif
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#ifndef MPT_COMPILER_GENERIC
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#define MPT_COMPILER_GENERIC 0
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#endif
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#ifndef MPT_COMPILER_MSVCCLANGC2
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#define MPT_COMPILER_MSVCCLANGC2 0
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#define MPT_MSVCCLANGC2_AT_LEAST(major,minor,build) 0
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#define MPT_MSVCCLANGC2_BEFORE(major,minor,build) 0
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#endif
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#ifndef MPT_COMPILER_CLANG
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#define MPT_COMPILER_CLANG 0
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#define MPT_CLANG_AT_LEAST(major,minor,patch) 0
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#define MPT_CLANG_BEFORE(major,minor,patch) 0
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#endif
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#ifndef MPT_COMPILER_GCC
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#define MPT_COMPILER_GCC 0
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#define MPT_GCC_AT_LEAST(major,minor,patch) 0
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#define MPT_GCC_BEFORE(major,minor,patch) 0
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#endif
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#ifndef MPT_COMPILER_MSVC
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#define MPT_COMPILER_MSVC 0
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#define MPT_MSVC_AT_LEAST(version,sp) 0
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#define MPT_MSVC_BEFORE(version,sp) 0
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#endif
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#if MPT_COMPILER_GENERIC || MPT_COMPILER_GCC || MPT_COMPILER_CLANG
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#if (__cplusplus >= 201703)
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#define MPT_CXX 17
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#elif (__cplusplus >= 201402)
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#define MPT_CXX 14
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#else
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#define MPT_CXX 11
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#endif
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#elif MPT_COMPILER_MSVC
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#if MPT_MSVC_AT_LEAST(2017,0)
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#if (_MSVC_LANG >= 201402)
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#define MPT_CXX 14
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#else
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#define MPT_CXX 11
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#endif
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#else
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#define MPT_CXX 11
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#endif
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#else
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#define MPT_CXX 11
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#endif
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// MPT_CXX is stricter than just using __cplusplus directly.
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// We will only claim a language version as supported IFF all core language and
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// library fatures that we need are actually supported AND working correctly
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// (to our needs).
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#define MPT_CXX_AT_LEAST(version) (MPT_CXX >= (version))
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#define MPT_CXX_BEFORE(version) (MPT_CXX < (version))
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#if MPT_COMPILER_MSVC
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#define MPT_PLATFORM_LITTLE_ENDIAN
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#elif MPT_COMPILER_GCC
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define MPT_PLATFORM_BIG_ENDIAN
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#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define MPT_PLATFORM_LITTLE_ENDIAN
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#endif
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#elif MPT_COMPILER_CLANG || MPT_COMPILER_MSVCCLANGC2
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define MPT_PLATFORM_BIG_ENDIAN
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#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define MPT_PLATFORM_LITTLE_ENDIAN
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#endif
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#endif
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// fallback:
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#if !defined(MPT_PLATFORM_BIG_ENDIAN) && !defined(MPT_PLATFORM_LITTLE_ENDIAN)
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// taken from boost/detail/endian.hpp
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#if (defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN)) \
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|| (defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)) \
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|| (defined(_STLP_BIG_ENDIAN) && !defined(_STLP_LITTLE_ENDIAN))
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#define MPT_PLATFORM_BIG_ENDIAN
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#elif (defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)) \
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|| (defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__)) \
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|| (defined(_STLP_LITTLE_ENDIAN) && !defined(_STLP_BIG_ENDIAN))
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#define MPT_PLATFORM_LITTLE_ENDIAN
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#elif defined(__sparc) || defined(__sparc__) \
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|| defined(_POWER) || defined(__powerpc__) \
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|| defined(__ppc__) || defined(__hpux) || defined(__hppa) \
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|| defined(_MIPSEB) || defined(_POWER) \
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|| defined(__s390__)
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#define MPT_PLATFORM_BIG_ENDIAN
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#elif defined(__i386__) || defined(__alpha__) \
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|| defined(__ia64) || defined(__ia64__) \
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|| defined(_M_IX86) || defined(_M_IA64) \
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|| defined(_M_ALPHA) || defined(__amd64) \
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|| defined(__amd64__) || defined(_M_AMD64) \
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|| defined(__x86_64) || defined(__x86_64__) \
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|| defined(_M_X64) || defined(__bfin__)
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#define MPT_PLATFORM_LITTLE_ENDIAN
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#endif
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#endif
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#if defined(MPT_PLATFORM_BIG_ENDIAN) || defined(MPT_PLATFORM_LITTLE_ENDIAN)
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#define MPT_PLATFORM_ENDIAN_KNOWN 1
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#else
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#define MPT_PLATFORM_ENDIAN_KNOWN 0
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#endif
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// This should really be based on __STDCPP_THREADS__, but that is not defined by
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// GCC or clang. Stupid.
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// Just assume multithreaded and disable for platforms we know are
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// singlethreaded later on.
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#define MPT_PLATFORM_MULTITHREADED 1
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// specific C++ features
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// C++11 constexpr
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#if MPT_COMPILER_MSVC
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#define MPT_COMPILER_QUIRK_CONSTEXPR_NO_STRING_LITERALS
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#endif
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#if MPT_COMPILER_MSVC
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// Compiler has multiplication/division semantics when shifting signed integers.
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#define MPT_COMPILER_SHIFT_SIGNED 1
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#endif
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#ifndef MPT_COMPILER_SHIFT_SIGNED
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#define MPT_COMPILER_SHIFT_SIGNED 0
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#endif
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#if MPT_COMPILER_GCC || MPT_COMPILER_MSVC
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// Compiler supports type-punning through unions. This is not stricly standard-conforming.
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// For GCC, this is documented, for MSVC this is apparently not documented, but we assume it.
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#define MPT_COMPILER_UNION_TYPE_ALIASES 1
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#endif
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#ifndef MPT_COMPILER_UNION_TYPE_ALIASES
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// Compiler does not support type-punning through unions. std::memcpy is used instead.
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// This is the safe fallback and strictly standard-conforming.
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// Another standard-compliant alternative would be casting pointers to a character type pointer.
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// This results in rather unreadable code and,
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// in most cases, compilers generate better code by just inlining the memcpy anyway.
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// (see <http://blog.regehr.org/archives/959>).
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#define MPT_COMPILER_UNION_TYPE_ALIASES 0
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#endif
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// The order of the checks matters!
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#if defined(__EMSCRIPTEN__)
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#define MPT_OS_EMSCRIPTEN 1
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#if defined(__EMSCRIPTEN_major__) && defined(__EMSCRIPTEN_minor__)
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#if (__EMSCRIPTEN_major__ > 1)
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#define MPT_OS_EMSCRIPTEN_ANCIENT 0
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#elif (__EMSCRIPTEN_major__ == 1) && (__EMSCRIPTEN_minor__ >= 36)
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#define MPT_OS_EMSCRIPTEN_ANCIENT 0
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#else
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#define MPT_OS_EMSCRIPTEN_ANCIENT 1
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#endif
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#else
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#define MPT_OS_EMSCRIPTEN_ANCIENT 1
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#endif
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#elif defined(_WIN32)
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#define MPT_OS_WINDOWS 1
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#if defined(WINAPI_FAMILY)
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#include <winapifamily.h>
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#if (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)
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#define MPT_OS_WINDOWS_WINRT 0
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#else
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#define MPT_OS_WINDOWS_WINRT 1
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#endif
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#else // !WINAPI_FAMILY
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#define MPT_OS_WINDOWS_WINRT 0
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#endif // WINAPI_FAMILY
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#elif defined(__APPLE__)
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#define MPT_OS_MACOSX_OR_IOS 1
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//#include "TargetConditionals.h"
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//#if TARGET_IPHONE_SIMULATOR
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//#elif TARGET_OS_IPHONE
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//#elif TARGET_OS_MAC
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//#else
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//#endif
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#elif defined(__ANDROID__) || defined(ANDROID)
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#define MPT_OS_ANDROID 1
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#elif defined(__linux__)
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#define MPT_OS_LINUX 1
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#elif defined(__DragonFly__)
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#define MPT_OS_DRAGONFLYBSD 1
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#elif defined(__FreeBSD__)
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#define MPT_OS_FREEBSD 1
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#elif defined(__OpenBSD__)
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#define MPT_OS_OPENBSD 1
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#elif defined(__NetBSD__)
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#define MPT_OS_NETBSD 1
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#elif defined(__unix__)
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#define MPT_OS_GENERIC_UNIX 1
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#else
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#define MPT_OS_UNKNOWN 1
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#endif
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#ifndef MPT_OS_EMSCRIPTEN
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#define MPT_OS_EMSCRIPTEN 0
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#endif
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#ifndef MPT_OS_WINDOWS
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#define MPT_OS_WINDOWS 0
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#endif
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#ifndef MPT_OS_WINDOWS_WINRT
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#define MPT_OS_WINDOWS_WINRT 0
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#endif
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#ifndef MPT_OS_MACOSX_OR_IOS
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#define MPT_OS_MACOSX_OR_IOS 0
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#endif
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#ifndef MPT_OS_ANDROID
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#define MPT_OS_ANDROID 0
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#endif
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#ifndef MPT_OS_LINUX
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#define MPT_OS_LINUX 0
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#endif
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#ifndef MPT_OS_DRAGONFLYBSD
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#define MPT_OS_DRAGONFLYBSD 0
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#endif
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#ifndef MPT_OS_FREEBSD
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#define MPT_OS_FREEBSD 0
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#endif
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#ifndef MPT_OS_OPENBSD
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#define MPT_OS_OPENBSD 0
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#endif
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#ifndef MPT_OS_NETBSD
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#define MPT_OS_NETBSD 0
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#endif
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#ifndef MPT_OS_GENERIC_UNIX
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#define MPT_OS_GENERIC_UNIX 0
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#endif
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#ifndef MPT_OS_UNKNOWN
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#define MPT_OS_UNKNOWN 0
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#endif
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#ifndef MPT_OS_EMSCRIPTEN_ANCIENT
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#define MPT_OS_EMSCRIPTEN_ANCIENT 0
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#endif
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#if MPT_OS_EMSCRIPTEN
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#undef MPT_PLATFORM_MULTITHREADED
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#define MPT_PLATFORM_MULTITHREADED 0
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#endif
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