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 // Copyright (c) 2012 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_

 #if defined(__APPLE__)

 #include <TargetConditionals.h>

 #endif

 // A set of macros to use for platform detection.

 #if defined(__APPLE__)

 #define OS_MACOSX 1

 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE

 #define OS_IOS 1

 #endif  // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE

 #elif defined(ANDROID)

 #define OS_ANDROID 1

 #elif defined(__native_client__)

 #define OS_NACL 1

 #elif defined(__linux__)

 #define OS_LINUX 1

 // Use TOOLKIT_GTK on linux if TOOLKIT_VIEWS isn't defined.

 #if !defined(TOOLKIT_VIEWS)

 #define TOOLKIT_GTK

 #endif

 #elif defined(_WIN32)

 #define OS_WIN 1

 #define TOOLKIT_VIEWS 1

 #elif defined(__DragonFly__)

 #define OS_DRAGONFLY 1

 #define TOOLKIT_GTK

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

 #define OS_FREEBSD 1

 #define TOOLKIT_GTK

 #elif defined(__NetBSD__)

 #define OS_NETBSD 1

 #define TOOLKIT_GTK

 #elif defined(__OpenBSD__)

 #define OS_OPENBSD 1

 #define TOOLKIT_GTK

 #elif defined(__sun)

 #define OS_SOLARIS 1

 #define TOOLKIT_GTK

 #else

 #error Please add support for your platform in build/build_config.h

 #endif

 #if defined(USE_OPENSSL) && defined(USE_NSS)

 #error Cannot use both OpenSSL and NSS

 #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 POSIXish features, use OS_POSIX instead of a

 // more specific macro.

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

     defined(OS_SOLARIS) || defined(OS_ANDROID) || defined(OS_NACL)

 #define OS_POSIX 1

 #endif

 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) && \

     !defined(OS_NACL)

 #define USE_X11 1  // Use X for graphics.

 #endif

 // Use tcmalloc

 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(NO_TCMALLOC)

 #define USE_TCMALLOC 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

 #define ARCH_CPU_LITTLE_ENDIAN 1

 #elif defined(_M_IX86) || defined(__i386__)

 #define ARCH_CPU_X86_FAMILY 1

 #define ARCH_CPU_X86 1

 #define ARCH_CPU_32_BITS 1

 #define ARCH_CPU_LITTLE_ENDIAN 1

 #elif defined(__ARMEL__)

 #define ARCH_CPU_ARM_FAMILY 1

 #define ARCH_CPU_ARMEL 1

 #define ARCH_CPU_32_BITS 1

 #define ARCH_CPU_LITTLE_ENDIAN 1

 #elif defined(__pnacl__)

 #define ARCH_CPU_32_BITS 1

 #elif defined(__MIPSEL__)

 #define ARCH_CPU_MIPS_FAMILY 1

 #define ARCH_CPU_MIPSEL 1

 #define ARCH_CPU_32_BITS 1

 #define ARCH_CPU_LITTLE_ENDIAN 1

 #elif defined(__powerpc64__)

 #define ARCH_CPU_PPC_FAMILY 1

 #define ARCH_CPU_PPC64 1

 #define ARCH_CPU_64_BITS 1

 #define ARCH_CPU_BIG_ENDIAN 1

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

 #define ARCH_CPU_PPC_FAMILY 1

 #define ARCH_CPU_PPC 1

 #define ARCH_CPU_32_BITS 1

 #define ARCH_CPU_BIG_ENDIAN 1

 #elif defined(__sparc64__)

 #define ARCH_CPU_SPARC_FAMILY 1

 #define ARCH_CPU_SPARC 1

 #define ARCH_CPU_64_BITS 1

 #elif defined(__sparc__)

 #define ARCH_CPU_SPARC_FAMILY 1

 #define ARCH_CPU_SPARC 1

 #define ARCH_CPU_32_BITS 1

 #elif defined(__mips__)

 #define ARCH_CPU_MIPS_FAMILY 1

 #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

 #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 || __WCHAR_MAX__ == 0xffffffff)

 #define WCHAR_T_IS_UTF32

 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && \

     defined(__WCHAR_MAX__) && \

     (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff)

 // On Posix, we'll detect short wchar_t, but projects aren't guaranteed to

 // compile in this mode (in particular, Chrome doesn't). This is intended for

 // other projects using base who manage their own dependencies and make sure

 // short wchar works for them.

 #define WCHAR_T_IS_UTF16

 #else

 #error Please add support for your compiler in build/build_config.h

 #endif

 #if defined(__ARMEL__) && !defined(OS_IOS)

 #define WCHAR_T_IS_UNSIGNED 1

 #elif defined(__MIPSEL__)

 #define WCHAR_T_IS_UNSIGNED 0

 #endif

 #if defined(OS_ANDROID)

 // The compiler thinks std::string::const_iterator and "const char*" are

 // equivalent types.

 #define STD_STRING_ITERATOR_IS_CHAR_POINTER

 // The compiler thinks base::string16::const_iterator and "char16*" are

 // equivalent types.

 #define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER

 #endif

 #endif  // BUILD_BUILD_CONFIG_H_