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