75 lines
3.5 KiB
C
75 lines
3.5 KiB
C
#pragma once
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// This defines the compiler environment for clang based compilers. Please make sure to define all required features
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// (see VerifyCompilerEnvironment.h for reference)
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#if defined(__cplusplus) && __cplusplus < 201103L
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#error "Baselib requires C++11 support"
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#endif
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#define COMPILER_CLANG 1
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#define HAS_CLANG_FEATURE(x) (__has_feature(x))
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#define COMPILER_SUPPORTS_EXCEPTIONS HAS_CLANG_FEATURE(cxx_exceptions)
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#define COMPILER_SUPPORTS_RTTI HAS_CLANG_FEATURE(cxx_rtti)
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#define COMPILER_SUPPORTS_GENERIC_LAMBDA_EXPRESSIONS HAS_CLANG_FEATURE(cxx_generic_lambdas) // Clang >=3.4
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#define COMPILER_BUILTIN_EXPECT(X_, Y_) __builtin_expect((X_), (Y_))
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// Tells the compiler to assume that this statement is never reached.
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// (reaching it anyways is undefined behavior!)
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#define COMPILER_BUILTIN_UNREACHABLE() __builtin_unreachable()
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// Tells the compiler to assume that the given expression is true until the expression is modified.
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// (it is undefined behavior if the expression is not true after all)
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#define COMPILER_BUILTIN_ASSUME(EXPR_) __builtin_assume(EXPR_)
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#define COMPILER_NOINLINE __attribute__((unused, noinline)) // unused is needed to avoid warning when a function is not used
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#define COMPILER_INLINE __attribute__((unused)) inline
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#define COMPILER_FORCEINLINE __attribute__((unused, always_inline, nodebug)) inline
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#define COMPILER_EMPTYINLINE __attribute__((const, always_inline, nodebug)) inline
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#define COMPILER_NORETURN __attribute__((noreturn))
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#if __has_extension(attribute_deprecated_with_message)
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#define COMPILER_DEPRECATED(msg) __attribute__((deprecated(msg)))
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#if __has_extension(enumerator_attributes)
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#define COMPILER_DEPRECATED_ENUM_VALUE(msg) __attribute__((deprecated(msg)))
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#else
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#define COMPILER_DEPRECATED_ENUM_VALUE(msg)
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#endif
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#else
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#define COMPILER_DEPRECATED(msg) __attribute__((deprecated))
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#if __has_extension(enumerator_attributes)
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#define COMPILER_DEPRECATED_ENUM_VALUE(msg) __attribute__((deprecated))
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#else
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#define COMPILER_DEPRECATED_ENUM_VALUE(msg)
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#endif
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#endif
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#define COMPILER_ALIGN_OF(TYPE_) __alignof__(TYPE_)
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#define COMPILER_ALIGN_AS(ALIGN_) __attribute__((aligned(ALIGN_)))
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#define COMPILER_C_STATIC_ASSERT(EXPR_, MSG_) _Static_assert(EXPR_, MSG_)
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#define COMPILER_ATTRIBUTE_UNUSED __attribute__((unused))
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// Note that this is how the compiler defines a debug break which is not necessarily the standard way on any given platform.
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// For a platform friendly implementation, use `BASELIB_DEBUG_TRAP`
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#define COMPILER_DEBUG_TRAP() __builtin_debugtrap()
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#define COMPILER_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
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// Warning management
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// pragma message on clang does always generate a warning that cannot be disabled, therefore the clang version
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// of COMPILER_PRINT_MESSAGE() does nothing
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#define COMPILER_PRINT_MESSAGE(MESSAGE_)
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#define COMPILER_PRINT_WARNING(MESSAGE_) _Pragma(PP_STRINGIZE(message(__FILE__ "warning: " MESSAGE_)))
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#define COMPILER_WARNING_UNUSED_VARIABLE PP_STRINGIZE(-Wunused-variable)
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#define COMPILER_WARNING_DEPRECATED PP_STRINGIZE(-Wdeprecated)
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#define COMPILER_WARNINGS_PUSH _Pragma(PP_STRINGIZE(clang diagnostic push))
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#define COMPILER_WARNINGS_POP _Pragma(PP_STRINGIZE(clang diagnostic pop))
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#define COMPILER_WARNINGS_DISABLE(Warn) _Pragma(PP_STRINGIZE(clang diagnostic ignored Warn))
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