127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/* Copyright (c) 2022 Wildfire Games.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* compiler-specific macros and fixes
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*/
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#ifndef INCLUDED_COMPILER
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#define INCLUDED_COMPILER
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// detect compiler and its version (0 if not present, otherwise
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// major*100 + minor). note that more than one *_VERSION may be
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// non-zero due to interoperability (e.g. ICC with MSC).
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// .. VC
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#ifdef _MSC_VER
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# define MSC_VERSION _MSC_VER
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#else
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# define MSC_VERSION 0
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#endif
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// .. ICC (VC-compatible, GCC-compatible)
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#if defined(__INTEL_COMPILER)
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# define ICC_VERSION __INTEL_COMPILER
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#else
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# define ICC_VERSION 0
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#endif
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// .. LCC (Win32) and MCST LCC (E2K) compilers define same identifier (__LCC__)
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#if defined(__LCC__) && !defined(__MCST__)
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# define LCC_VERSION __LCC__
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#else
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# define LCC_VERSION 0
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#endif
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// .. MCST LCC (eLbrus Compiler Collection)
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#if defined(__LCC__) && defined(__MCST__)
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# define MCST_LCC_VERSION (__LCC__*100 + __LCC_MINOR__)
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#else
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# define MCST_LCC_VERSION 0
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#endif
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// .. GCC
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#ifdef __GNUC__
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# define GCC_VERSION (__GNUC__*100 + __GNUC_MINOR__)
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#else
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# define GCC_VERSION 0
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#endif
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// .. Clang/LLVM (GCC-compatible)
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// use Clang's feature checking macros to check for availability of features
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// http://clang.llvm.org/docs/LanguageExtensions.html#feature-checking-macros
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#ifdef __clang__
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# define CLANG_VERSION (__clang_major__*100 + __clang_minor__)
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#else
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# define CLANG_VERSION 0
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#endif
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// Clang/LLVM feature check macro compatibility
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#ifndef __has_feature
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# define __has_feature(x) 0
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#endif
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#ifndef __has_cpp_attribute
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# define __has_cpp_attribute(x) 0
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#endif
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// check if compiling in pure C mode (not C++) with support for C99.
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// (this is more convenient than testing __STDC_VERSION__ directly)
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//
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// note: C99 provides several useful but disjunct bits of functionality.
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// unfortunately, most C++ compilers do not offer a complete implementation.
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// however, many of these features are likely to be added to C++, and/or are
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// already available as extensions. what we'll do is add a HAVE_ macro for
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// each feature and test those instead. they are set if HAVE_C99, or also if
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// the compiler happens to support something compatible.
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//
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// rationale: lying about __STDC_VERSION__ via Premake so as to enable support
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// for some C99 functions doesn't work. Mac OS X headers would then use the
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// restrict keyword, which is never supported by g++ (because that might
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// end up breaking valid C++98 programs).
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#define HAVE_C99 0
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#ifdef __STDC_VERSION__
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# if __STDC_VERSION__ >= 199901L
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# undef HAVE_C99
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# define HAVE_C99 1
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# endif
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#endif
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// Streaming SIMD Extensions (not supported by all GCC)
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// this only ascertains compiler support; use x86_x64::Cap to
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// check whether the instructions are supported by the CPU.
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#ifndef COMPILER_HAS_SSE
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# if GCC_VERSION && defined(__SSE__)
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# define COMPILER_HAS_SSE 1
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# elif MSC_VERSION // also includes ICC
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# define COMPILER_HAS_SSE 1
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# else
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# define COMPILER_HAS_SSE 0
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# endif
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#endif
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#ifndef COMPILER_HAS_SSE2
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# if GCC_VERSION && defined(__SSE2__)
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# define COMPILER_HAS_SSE2 1
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# elif MSC_VERSION // also includes ICC
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# define COMPILER_HAS_SSE2 1
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# else
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# define COMPILER_HAS_SSE2 0
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# endif
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#endif
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#endif // #ifndef INCLUDED_COMPILER
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