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EVT/EXAM/BLE/peripheral_ancs_client/includes/toolchain.h

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+/*
+ * Copyright (c) 2010-2014, Wind River Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @file
+ * @brief Macros to abstract toolchain specific capabilities
+ *
+ * This file contains various macros to abstract compiler capabilities that
+ * utilize toolchain specific attributes and/or pragmas.
+ */
+
+#ifndef ZEPHYR_INCLUDE_TOOLCHAIN_H_
+#define ZEPHYR_INCLUDE_TOOLCHAIN_H_
+
+/**
+ * @def HAS_BUILTIN(x)
+ * @brief Check if the compiler supports the built-in function \a x.
+ *
+ * This macro is for use with conditional compilation to enable code using a
+ * builtin function that may not be available in every compiler.
+ */
+#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(__XCC__)
+#include <toolchain/xcc.h>
+#elif defined(__CCAC__)
+#include <toolchain/mwdt.h>
+#elif defined(__llvm__)
+#include <toolchain/llvm.h>
+#elif defined(__GNUC__) || (defined(_LINKER) && defined(__GCC_LINKER_CMD__))
+#include <toolchain/gcc.h>
+#else
+/* 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>
+#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_ */