build_config.h revision c5cede9ae108bb15f6b7a8aea21c7e1fefa2834c
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#if defined(__GLIBC__) && !defined(__UCLIBC__) 34// we really are using glibc, not uClibc pretending to be glibc 35#define LIBC_GLIBC 1 36#endif 37#elif defined(_WIN32) 38#define OS_WIN 1 39#define TOOLKIT_VIEWS 1 40#elif defined(__FreeBSD__) 41#define OS_FREEBSD 1 42#elif defined(__OpenBSD__) 43#define OS_OPENBSD 1 44#elif defined(__sun) 45#define OS_SOLARIS 1 46#elif defined(__QNXNTO__) 47#define OS_QNX 1 48#else 49#error Please add support for your platform in build/build_config.h 50#endif 51 52// Use TOOLKIT_GTK on X11 if TOOLKIT_VIEWS and USE_AURA aren't defined. 53#if defined(USE_X11) && !defined(TOOLKIT_VIEWS) && !defined(USE_AURA) && \ 54 !defined(OS_NACL) 55#define TOOLKIT_GTK 56#endif 57 58#if defined(USE_OPENSSL) && defined(USE_NSS) 59#error Cannot use both OpenSSL and NSS 60#endif 61 62// For access to standard BSD features, use OS_BSD instead of a 63// more specific macro. 64#if defined(OS_FREEBSD) || defined(OS_OPENBSD) 65#define OS_BSD 1 66#endif 67 68// For access to standard POSIXish features, use OS_POSIX instead of a 69// more specific macro. 70#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || \ 71 defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID) || \ 72 defined(OS_NACL) || defined(OS_QNX) 73#define OS_POSIX 1 74#endif 75 76// Use tcmalloc 77#if (defined(OS_WIN) || defined(OS_LINUX) || defined(OS_ANDROID)) && \ 78 !defined(NO_TCMALLOC) 79#define USE_TCMALLOC 1 80#endif 81 82// Compiler detection. 83#if defined(__GNUC__) 84#define COMPILER_GCC 1 85#elif defined(_MSC_VER) 86#define COMPILER_MSVC 1 87#else 88#error Please add support for your compiler in build/build_config.h 89#endif 90 91// Processor architecture detection. For more info on what's defined, see: 92// http://msdn.microsoft.com/en-us/library/b0084kay.aspx 93// http://www.agner.org/optimize/calling_conventions.pdf 94// or with gcc, run: "echo | gcc -E -dM -" 95#if defined(_M_X64) || defined(__x86_64__) 96#define ARCH_CPU_X86_FAMILY 1 97#define ARCH_CPU_X86_64 1 98#define ARCH_CPU_64_BITS 1 99#define ARCH_CPU_LITTLE_ENDIAN 1 100#elif defined(_M_IX86) || defined(__i386__) 101#define ARCH_CPU_X86_FAMILY 1 102#define ARCH_CPU_X86 1 103#define ARCH_CPU_32_BITS 1 104#define ARCH_CPU_LITTLE_ENDIAN 1 105#elif defined(__ARMEL__) 106#define ARCH_CPU_ARM_FAMILY 1 107#define ARCH_CPU_ARMEL 1 108#define ARCH_CPU_32_BITS 1 109#define ARCH_CPU_LITTLE_ENDIAN 1 110#elif defined(__aarch64__) 111#define ARCH_CPU_ARM_FAMILY 1 112#define ARCH_CPU_ARM64 1 113#define ARCH_CPU_64_BITS 1 114#define ARCH_CPU_LITTLE_ENDIAN 1 115#elif defined(__pnacl__) 116#define ARCH_CPU_32_BITS 1 117#define ARCH_CPU_LITTLE_ENDIAN 1 118#elif defined(__MIPSEL__) 119#define ARCH_CPU_MIPS_FAMILY 1 120#define ARCH_CPU_MIPSEL 1 121#define ARCH_CPU_32_BITS 1 122#define ARCH_CPU_LITTLE_ENDIAN 1 123#else 124#error Please add support for your architecture in build/build_config.h 125#endif 126 127// Type detection for wchar_t. 128#if defined(OS_WIN) 129#define WCHAR_T_IS_UTF16 130#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ 131 defined(__WCHAR_MAX__) && \ 132 (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff) 133#define WCHAR_T_IS_UTF32 134#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ 135 defined(__WCHAR_MAX__) && \ 136 (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff) 137// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to 138// compile in this mode (in particular, Chrome doesn't). This is intended for 139// other projects using base who manage their own dependencies and make sure 140// short wchar works for them. 141#define WCHAR_T_IS_UTF16 142#else 143#error Please add support for your compiler in build/build_config.h 144#endif 145 146#if defined(__ARMEL__) && !defined(OS_IOS) 147#define WCHAR_T_IS_UNSIGNED 1 148#elif defined(__MIPSEL__) 149#define WCHAR_T_IS_UNSIGNED 0 150#endif 151 152#if defined(OS_ANDROID) 153// The compiler thinks std::string::const_iterator and "const char*" are 154// equivalent types. 155#define STD_STRING_ITERATOR_IS_CHAR_POINTER 156// The compiler thinks base::string16::const_iterator and "char16*" are 157// equivalent types. 158#define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER 159#endif 160 161#endif // BUILD_BUILD_CONFIG_H_ 162