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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file adds defines about the platform we're currently building on.
// Operating System:
// OS_WIN / OS_MACOSX / OS_LINUX / OS_POSIX (MACOSX or LINUX)
// Compiler:
// COMPILER_MSVC / COMPILER_GCC
// Processor:
// ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_X86_FAMILY (X86 or X86_64)
// ARCH_CPU_32_BITS / ARCH_CPU_64_BITS
#ifndef BUILD_BUILD_CONFIG_H_
#define BUILD_BUILD_CONFIG_H_
// A set of macros to use for platform detection.
#if defined(__APPLE__)
#define OS_MACOSX 1
#elif defined(__linux__)
#define OS_LINUX 1
#elif defined(_WIN32)
#define OS_WIN 1
#else
#error Please add support for your platform in build/build_config.h
#endif
// For access to standard POSIX features, use OS_POSIX instead of a more
// specific macro.
#if defined(OS_MACOSX) || defined(OS_LINUX)
#define OS_POSIX 1
#endif
// Compiler detection.
#if defined(__GNUC__)
#define COMPILER_GCC 1
#elif defined(_MSC_VER)
#define COMPILER_MSVC 1
#else
#error Please add support for your compiler in build/build_config.h
#endif
// Processor architecture detection. For more info on what's defined, see:
// http://msdn.microsoft.com/en-us/library/b0084kay.aspx
// http://www.agner.org/optimize/calling_conventions.pdf
#if defined(_M_X64) || defined(__x86_64__)
#define ARCH_CPU_X86_FAMILY 1
#define ARCH_CPU_X86_64 1
#define ARCH_CPU_64_BITS 1
#elif defined(_M_IX86) || defined(__i386__)
#define ARCH_CPU_X86_FAMILY 1
#define ARCH_CPU_X86 1
#define ARCH_CPU_32_BITS 1
#else
#error Please add support for your architecture in build/build_config.h
#endif
// Type detection for wchar_t.
#if defined(OS_WIN)
#define WCHAR_T_IS_UTF16
#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
defined(__WCHAR_MAX__) && __WCHAR_MAX__ == 0x7fffffff
#define WCHAR_T_IS_UTF32
#else
#error Please add support for your compiler in build/build_config.h
#endif
#endif // BUILD_BUILD_CONFIG_H_
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