toolchain.h

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/*
 * Copyright (c) 2010-2014, Wind River Systems, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_TOOLCHAIN_H_
#define ZEPHYR_INCLUDE_TOOLCHAIN_H_
 
#ifdef __has_builtin
#define HAS_BUILTIN(x) __has_builtin(x)
#else
/*
 * The compiler doesn't provide the __has_builtin() macro, so instead we depend
 * on the toolchain-specific headers to define HAS_BUILTIN_x for the builtins
 * supported.
 */
#define HAS_BUILTIN(x) HAS_BUILTIN_##x
#endif
 
#if defined(__TOOLCHAIN_CUSTOM__)
/* This include line exists for off-tree definitions of compilers,
 * and therefore this header is not meant to exist in-tree
 */
#include <toolchain/other.h>
#elif defined(__XCC__)
#include <toolchain/xcc.h>
#elif defined(__CCAC__)
#include <toolchain/mwdt.h>
#elif defined(__ARMCOMPILER_VERSION)
#include <toolchain/armclang.h>
#elif defined(__llvm__)
#include <toolchain/llvm.h>
#elif defined(__GNUC__) || (defined(_LINKER) && defined(__GCC_LINKER_CMD__))
#include <toolchain/gcc.h>
#else
#error "Invalid/unknown toolchain configuration"
#endif
 
/*
 * Ensure that __BYTE_ORDER__ and related preprocessor definitions are defined,
 * as these are often used without checking for definition and doing so can
 * cause unexpected behaviours.
 */
#ifndef _LINKER
#if !defined(__BYTE_ORDER__) || !defined(__ORDER_BIG_ENDIAN__) || \
    !defined(__ORDER_LITTLE_ENDIAN__)
 
#error "__BYTE_ORDER__ is not defined"
 
#endif
#endif /* !_LINKER */
 
#endif /* ZEPHYR_INCLUDE_TOOLCHAIN_H_ */