compiler.h

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#pragma once
 
// TODO: distinguish between versions
 
#if defined(__clang__)
    #define PH_COMPILER_IS_CLANG 1
#elif defined(__GNUG__)
    #define PH_COMPILER_IS_GNU 1
#elif defined(_MSC_VER)
    #define PH_COMPILER_IS_MSVC 1
#endif
 
#ifndef PH_COMPILER_IS_CLANG
    #define PH_COMPILER_IS_CLANG 0
#endif
 
#ifndef PH_COMPILER_IS_GNU
    #define PH_COMPILER_IS_GNU 0
#endif
 
#ifndef PH_COMPILER_IS_MSVC
    #define PH_COMPILER_IS_MSVC 0
#endif
 
#if PH_COMPILER_IS_MSVC
    #define PH_ALWAYS_INLINE msvc::forceinline
#elif PH_COMPILER_IS_GNU
    #define PH_ALWAYS_INLINE gnu::always_inline
#elif PH_COMPILER_IS_CLANG
    #define PH_ALWAYS_INLINE clang::always_inline
#else
    #error "Unrecognized compiler: cannot define `PH_ALWAYS_INLINE`"
#endif