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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(ANDROID)

 #define OS_ANDROID 1

 #define OS_LINUX 1

 #elif defined(__APPLE__)

 #define OS_MACOSX 1

 #elif defined(__linux__)

 #define OS_LINUX 1

 #elif defined(__DragonFly__)

 #define OS_DRAGONFLY 1

 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)

 #define OS_FREEBSD 1

 #elif defined(__NetBSD__)

 #define OS_NETBSD 1

 #elif defined(__OpenBSD__)

 #define OS_OPENBSD 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 BSD features, use OS_BSD instead of a

 // more specific macro.

 #if defined(OS_DRAGONFLY) || defined(OS_FREEBSD)	\

   || defined(OS_NETBSD) || defined(OS_OPENBSD)

 #define OS_BSD 1

 #endif

 // For access to standard POSIX features, use OS_POSIX instead of a more

 // specific macro.

 #if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_BSD)

 #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

 //   or with gcc, run: "echo | gcc -E -dM -"

 #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

 #elif defined(__ARMEL__)

 #define ARCH_CPU_ARM_FAMILY 1

 #define ARCH_CPU_ARMEL 1

 #define ARCH_CPU_32_BITS 1

 #define WCHAR_T_IS_UNSIGNED 1

 #elif defined(__powerpc64__)

 #define ARCH_CPU_PPC64 1

 #define ARCH_CPU_64_BITS 1

 #elif defined(__ppc__) || defined(__powerpc__)

 #define ARCH_CPU_PPC 1

 #define ARCH_CPU_32_BITS 1

 #elif defined(__sparc64__)

 #define ARCH_CPU_SPARC 1

 #define ARCH_CPU_64_BITS 1

 #elif defined(__sparc__)

 #define ARCH_CPU_SPARC 1

 #define ARCH_CPU_32_BITS 1

 #elif defined(__mips__)

 #define ARCH_CPU_MIPS 1

 #define ARCH_CPU_32_BITS 1

 #elif defined(__hppa__)

 #define ARCH_CPU_HPPA 1

 #define ARCH_CPU_32_BITS 1

 #elif defined(__ia64__)

 #define ARCH_CPU_IA64 1

 #define ARCH_CPU_64_BITS 1

 #elif defined(__s390x__)

 #define ARCH_CPU_S390X 1

 #define ARCH_CPU_64_BITS 1

 #elif defined(__s390__)

 #define ARCH_CPU_S390 1

 #define ARCH_CPU_32_BITS 1

 #elif defined(__alpha__)

 #define ARCH_CPU_ALPHA 1

 #define ARCH_CPU_64_BITS 1

 #elif defined(__aarch64__)

 #define ARCH_CPU_AARCH64 1

 #define ARCH_CPU_64_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

 #else

 #define WCHAR_T_IS_UTF32

 #endif

 #endif  // BUILD_BUILD_CONFIG_H_