build_config.h revision 90dce4d38c5ff5333bea97d859d4e484e27edf0c
1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// This file adds defines about the platform we're currently building on. 6// Operating System: 7// OS_WIN / OS_MACOSX / OS_LINUX / OS_POSIX (MACOSX or LINUX) 8// Compiler: 9// COMPILER_MSVC / COMPILER_GCC 10// Processor: 11// ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_X86_FAMILY (X86 or X86_64) 12// ARCH_CPU_32_BITS / ARCH_CPU_64_BITS 13 14#ifndef BUILD_BUILD_CONFIG_H_ 15#define BUILD_BUILD_CONFIG_H_ 16 17#if defined(__APPLE__) 18#include <TargetConditionals.h> 19#endif 20 21// A set of macros to use for platform detection. 22#if defined(ANDROID) 23#define OS_ANDROID 1 24#elif defined(__APPLE__) 25#define OS_MACOSX 1 26#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE 27#define OS_IOS 1 28#endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE 29#elif defined(__native_client__) 30#define OS_NACL 1 31#elif defined(__linux__) 32#define OS_LINUX 1 33// Use TOOLKIT_GTK on linux if TOOLKIT_VIEWS isn't defined. 34#if !defined(TOOLKIT_VIEWS) && defined(USE_X11) 35#define TOOLKIT_GTK 36#endif 37#if defined(__GLIBC__) && !defined(__UCLIBC__) 38// we really are using glibc, not uClibc pretending to be glibc 39#define LIBC_GLIBC 40#endif 41#elif defined(_WIN32) 42#define OS_WIN 1 43#define TOOLKIT_VIEWS 1 44#elif defined(__FreeBSD__) 45#define OS_FREEBSD 1 46#define TOOLKIT_GTK 47#elif defined(__OpenBSD__) 48#define OS_OPENBSD 1 49#define TOOLKIT_GTK 50#elif defined(__sun) 51#define OS_SOLARIS 1 52#define TOOLKIT_GTK 53#else 54#error Please add support for your platform in build/build_config.h 55#endif 56 57#if defined(USE_OPENSSL) && defined(USE_NSS) 58#error Cannot use both OpenSSL and NSS 59#endif 60 61// For access to standard BSD features, use OS_BSD instead of a 62// more specific macro. 63#if defined(OS_FREEBSD) || defined(OS_OPENBSD) 64#define OS_BSD 1 65#endif 66 67// For access to standard POSIXish features, use OS_POSIX instead of a 68// more specific macro. 69#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || \ 70 defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID) || \ 71 defined(OS_NACL) 72#define OS_POSIX 1 73#endif 74 75// Use tcmalloc 76#if (defined(OS_WIN) || defined(OS_LINUX) || defined(OS_ANDROID)) && \ 77 !defined(NO_TCMALLOC) 78#define USE_TCMALLOC 1 79#endif 80 81// Compiler detection. 82#if defined(__GNUC__) 83#define COMPILER_GCC 1 84#elif defined(_MSC_VER) 85#define COMPILER_MSVC 1 86#else 87#error Please add support for your compiler in build/build_config.h 88#endif 89 90// Processor architecture detection. For more info on what's defined, see: 91// http://msdn.microsoft.com/en-us/library/b0084kay.aspx 92// http://www.agner.org/optimize/calling_conventions.pdf 93// or with gcc, run: "echo | gcc -E -dM -" 94#if defined(_M_X64) || defined(__x86_64__) 95#define ARCH_CPU_X86_FAMILY 1 96#define ARCH_CPU_X86_64 1 97#define ARCH_CPU_64_BITS 1 98#define ARCH_CPU_LITTLE_ENDIAN 1 99#elif defined(_M_IX86) || defined(__i386__) 100#define ARCH_CPU_X86_FAMILY 1 101#define ARCH_CPU_X86 1 102#define ARCH_CPU_32_BITS 1 103#define ARCH_CPU_LITTLE_ENDIAN 1 104#elif defined(__ARMEL__) 105#define ARCH_CPU_ARM_FAMILY 1 106#define ARCH_CPU_ARMEL 1 107#define ARCH_CPU_32_BITS 1 108#define ARCH_CPU_LITTLE_ENDIAN 1 109#elif defined(__pnacl__) 110#define ARCH_CPU_32_BITS 1 111#elif defined(__MIPSEL__) 112#define ARCH_CPU_MIPS_FAMILY 1 113#define ARCH_CPU_MIPSEL 1 114#define ARCH_CPU_32_BITS 1 115#define ARCH_CPU_LITTLE_ENDIAN 1 116#else 117#error Please add support for your architecture in build/build_config.h 118#endif 119 120// Type detection for wchar_t. 121#if defined(OS_WIN) 122#define WCHAR_T_IS_UTF16 123#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ 124 defined(__WCHAR_MAX__) && \ 125 (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff) 126#define WCHAR_T_IS_UTF32 127#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ 128 defined(__WCHAR_MAX__) && \ 129 (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff) 130// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to 131// compile in this mode (in particular, Chrome doesn't). This is intended for 132// other projects using base who manage their own dependencies and make sure 133// short wchar works for them. 134#define WCHAR_T_IS_UTF16 135#else 136#error Please add support for your compiler in build/build_config.h 137#endif 138 139#if defined(__ARMEL__) && !defined(OS_IOS) 140#define WCHAR_T_IS_UNSIGNED 1 141#elif defined(__MIPSEL__) 142#define WCHAR_T_IS_UNSIGNED 0 143#endif 144 145#if defined(OS_ANDROID) 146// The compiler thinks std::string::const_iterator and "const char*" are 147// equivalent types. 148#define STD_STRING_ITERATOR_IS_CHAR_POINTER 149// The compiler thinks base::string16::const_iterator and "char16*" are 150// equivalent types. 151#define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER 152#endif 153 154#endif // BUILD_BUILD_CONFIG_H_ 155