build_config.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9
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) / OS_NACL 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// A set of macros to use for platform detection. 18#if defined(__native_client__) 19// __native_client__ must be first, so that other OS_ defines are not set. 20#define OS_NACL 1 21#elif defined(ANDROID) 22#define OS_ANDROID 1 23#elif defined(__APPLE__) 24// only include TargetConditions after testing ANDROID as some android builds 25// on mac don't have this header available and it's not needed unless the target 26// is really mac/ios. 27#include <TargetConditionals.h> 28#define OS_MACOSX 1 29#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE 30#define OS_IOS 1 31#endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE 32#elif defined(__linux__) 33#define OS_LINUX 1 34// include a system header to pull in features.h for glibc/uclibc macros. 35#include <unistd.h> 36#if defined(__GLIBC__) && !defined(__UCLIBC__) 37// we really are using glibc, not uClibc pretending to be glibc 38#define LIBC_GLIBC 1 39#endif 40#elif defined(_WIN32) 41#define OS_WIN 1 42#define TOOLKIT_VIEWS 1 43#elif defined(__FreeBSD__) 44#define OS_FREEBSD 1 45#elif defined(__OpenBSD__) 46#define OS_OPENBSD 1 47#elif defined(__sun) 48#define OS_SOLARIS 1 49#elif defined(__QNXNTO__) 50#define OS_QNX 1 51#else 52#error Please add support for your platform in build/build_config.h 53#endif 54 55#if defined(USE_OPENSSL) && defined(USE_NSS) 56#error Cannot use both OpenSSL and NSS 57#endif 58 59// For access to standard BSD features, use OS_BSD instead of a 60// more specific macro. 61#if defined(OS_FREEBSD) || defined(OS_OPENBSD) 62#define OS_BSD 1 63#endif 64 65// For access to standard POSIXish features, use OS_POSIX instead of a 66// more specific macro. 67#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || \ 68 defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID) || \ 69 defined(OS_NACL) || defined(OS_QNX) 70#define OS_POSIX 1 71#endif 72 73// Use tcmalloc 74#if (defined(OS_WIN) || defined(OS_LINUX) || defined(OS_ANDROID)) && \ 75 !defined(NO_TCMALLOC) 76#define USE_TCMALLOC 1 77#endif 78 79// Compiler detection. 80#if defined(__GNUC__) 81#define COMPILER_GCC 1 82#elif defined(_MSC_VER) 83#define COMPILER_MSVC 1 84#else 85#error Please add support for your compiler in build/build_config.h 86#endif 87 88// Processor architecture detection. For more info on what's defined, see: 89// http://msdn.microsoft.com/en-us/library/b0084kay.aspx 90// http://www.agner.org/optimize/calling_conventions.pdf 91// or with gcc, run: "echo | gcc -E -dM -" 92#if defined(_M_X64) || defined(__x86_64__) 93#define ARCH_CPU_X86_FAMILY 1 94#define ARCH_CPU_X86_64 1 95#define ARCH_CPU_64_BITS 1 96#define ARCH_CPU_LITTLE_ENDIAN 1 97#elif defined(_M_IX86) || defined(__i386__) 98#define ARCH_CPU_X86_FAMILY 1 99#define ARCH_CPU_X86 1 100#define ARCH_CPU_32_BITS 1 101#define ARCH_CPU_LITTLE_ENDIAN 1 102#elif defined(__ARMEL__) 103#define ARCH_CPU_ARM_FAMILY 1 104#define ARCH_CPU_ARMEL 1 105#define ARCH_CPU_32_BITS 1 106#define ARCH_CPU_LITTLE_ENDIAN 1 107#elif defined(__aarch64__) 108#define ARCH_CPU_ARM_FAMILY 1 109#define ARCH_CPU_ARM64 1 110#define ARCH_CPU_64_BITS 1 111#define ARCH_CPU_LITTLE_ENDIAN 1 112#elif defined(__pnacl__) 113#define ARCH_CPU_32_BITS 1 114#define ARCH_CPU_LITTLE_ENDIAN 1 115#elif defined(__MIPSEL__) 116#if defined(__LP64__) 117#define ARCH_CPU_MIPS64_FAMILY 1 118#define ARCH_CPU_MIPS64EL 1 119#define ARCH_CPU_64_BITS 1 120#define ARCH_CPU_LITTLE_ENDIAN 1 121#else 122#define ARCH_CPU_MIPS_FAMILY 1 123#define ARCH_CPU_MIPSEL 1 124#define ARCH_CPU_32_BITS 1 125#define ARCH_CPU_LITTLE_ENDIAN 1 126#endif 127#else 128#error Please add support for your architecture in build/build_config.h 129#endif 130 131// Type detection for wchar_t. 132#if defined(OS_WIN) 133#define WCHAR_T_IS_UTF16 134#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ 135 defined(__WCHAR_MAX__) && \ 136 (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff) 137#define WCHAR_T_IS_UTF32 138#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ 139 defined(__WCHAR_MAX__) && \ 140 (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff) 141// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to 142// compile in this mode (in particular, Chrome doesn't). This is intended for 143// other projects using base who manage their own dependencies and make sure 144// short wchar works for them. 145#define WCHAR_T_IS_UTF16 146#else 147#error Please add support for your compiler in build/build_config.h 148#endif 149 150#if defined(OS_ANDROID) 151// The compiler thinks std::string::const_iterator and "const char*" are 152// equivalent types. 153#define STD_STRING_ITERATOR_IS_CHAR_POINTER 154// The compiler thinks base::string16::const_iterator and "char16*" are 155// equivalent types. 156#define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER 157#endif 158 159#endif // BUILD_BUILD_CONFIG_H_ 160