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/*
* Define useful compiler-specific macros
* (C) 2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
/* This header is included in both C++ and C (via ffi.h) and should only
contain macro definitions. Avoid C++ style // comments in this file.
*/
#ifndef BOTAN_UTIL_COMPILER_FLAGS_H_
#define BOTAN_UTIL_COMPILER_FLAGS_H_
/* Should we use GCC-style inline assembler? */
#if defined(BOTAN_BUILD_COMPILER_IS_GCC) || \
defined(BOTAN_BUILD_COMPILER_IS_CLANG) || \
defined(BOTAN_BUILD_COMPILER_IS_XLC) || \
defined(BOTAN_BUILD_COMPILER_IS_SUN_STUDIO)
#define BOTAN_USE_GCC_INLINE_ASM
#endif
/**
* Used to annotate API exports which are public and supported.
* These APIs will not be broken/removed unless strictly required for
* functionality or security, and only in new major versions.
* @param maj The major version this public API was released in
* @param min The minor version this public API was released in
*/
#define BOTAN_PUBLIC_API(maj,min) BOTAN_DLL
/**
* Used to annotate API exports which are public and can be used by
* applications if needed, but which are intentionally not documented,
* and which may change incompatibly in a future major version.
*/
#define BOTAN_UNSTABLE_API BOTAN_DLL
/**
* Used to annotate API exports which are exported but only for the
* purposes of testing. They should not be used by applications and
* may be removed or changed without notice.
*/
#define BOTAN_TEST_API BOTAN_DLL
/*
* Define BOTAN_GCC_VERSION
*/
#if defined(__GNUC__) && !defined(__clang__)
#define BOTAN_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__ * 10 + __GNUC_PATCHLEVEL__)
#else
#define BOTAN_GCC_VERSION 0
#endif
/*
* Define BOTAN_CLANG_VERSION
*/
#if defined(__clang__)
#define BOTAN_CLANG_VERSION (__clang_major__ * 10 + __clang_minor__)
#else
#define BOTAN_CLANG_VERSION 0
#endif
/*
* Define BOTAN_FUNC_ISA
*/
#if (defined(__GNUG__) && !defined(__clang__)) || (BOTAN_CLANG_VERSION > 38)
#define BOTAN_FUNC_ISA(isa) __attribute__ ((target(isa)))
#else
#define BOTAN_FUNC_ISA(isa)
#endif
/*
* Define BOTAN_WARN_UNUSED_RESULT
*/
#if defined(__GNUG__) || defined(__clang__)
#define BOTAN_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
#else
#define BOTAN_WARN_UNUSED_RESULT
#endif
/*
* Define BOTAN_MALLOC_FN
*/
#if defined(__ibmxl__)
// XLC pretends to be both Clang and GCC, but is neither
#define BOTAN_MALLOC_FN __attribute__ ((malloc))
#elif defined(__clang__) || (BOTAN_GCC_VERSION >= 500)
#define BOTAN_MALLOC_FN __attribute__ ((malloc, returns_nonnull, alloc_size(1,2)))
#elif defined(__GNUG__)
#define BOTAN_MALLOC_FN __attribute__ ((malloc, alloc_size(1,2)))
#elif defined(_MSC_VER)
#define BOTAN_MALLOC_FN __declspec(restrict)
#else
#define BOTAN_MALLOC_FN
#endif
/*
* Define BOTAN_DEPRECATED
*/
#if !defined(BOTAN_NO_DEPRECATED_WARNINGS)
#if defined(__clang__)
#define BOTAN_DEPRECATED(msg) __attribute__ ((deprecated))
#define BOTAN_DEPRECATED_HEADER(hdr) _Pragma("message \"this header is deprecated\"")
#elif defined(_MSC_VER)
#define BOTAN_DEPRECATED(msg) __declspec(deprecated(msg))
#define BOTAN_DEPRECATED_HEADER(hdr) __pragma("message \"this header is deprecated\"")
#elif defined(__GNUG__)
/* msg supported since GCC 4.5, earliest we support is 4.8 */
#define BOTAN_DEPRECATED(msg) __attribute__ ((deprecated(msg)))
#define BOTAN_DEPRECATED_HEADER(hdr) _Pragma("GCC warning \"this header is deprecated\"")
#endif
#endif
#if !defined(BOTAN_DEPRECATED)
#define BOTAN_DEPRECATED(msg)
#endif
#if !defined(BOTAN_DEPRECATED_HEADER)
#define BOTAN_DEPRECATED_HEADER(hdr)
#endif
/*
* Define BOTAN_NORETURN
*/
#if !defined(BOTAN_NORETURN)
#if defined (__clang__) || defined (__GNUG__)
#define BOTAN_NORETURN __attribute__ ((__noreturn__))
#elif defined (_MSC_VER)
#define BOTAN_NORETURN __declspec(noreturn)
#else
#define BOTAN_NORETURN
#endif
#endif
/*
* Define BOTAN_THREAD_LOCAL
*/
#if defined(BOTAN_TARGET_OS_HAS_THREADS)
#define BOTAN_THREAD_LOCAL thread_local
#else
#define BOTAN_THREAD_LOCAL /**/
#endif
/*
* Define BOTAN_IF_CONSTEXPR
*/
#if !defined(BOTAN_IF_CONSTEXPR)
#if __cplusplus > 201402
#define BOTAN_IF_CONSTEXPR if constexpr
#else
#define BOTAN_IF_CONSTEXPR if
#endif
#endif
/*
* Define BOTAN_PARALLEL_FOR
*/
#if !defined(BOTAN_PARALLEL_FOR)
#if defined(BOTAN_TARGET_HAS_OPENMP)
#define BOTAN_PARALLEL_FOR _Pragma("omp parallel for") for
#else
#define BOTAN_PARALLEL_FOR for
#endif
#endif
/*
* Define BOTAN_PARALLEL_SIMD_FOR
*/
#if !defined(BOTAN_PARALLEL_SIMD_FOR)
#if defined(BOTAN_TARGET_HAS_OPENMP)
#define BOTAN_PARALLEL_SIMD_FOR _Pragma("omp simd") for
#elif defined(BOTAN_BUILD_COMPILER_IS_GCC) && (BOTAN_GCC_VERSION >= 490)
#define BOTAN_PARALLEL_SIMD_FOR _Pragma("GCC ivdep") for
#else
#define BOTAN_PARALLEL_SIMD_FOR for
#endif
#endif
#endif
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