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| 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 // OS_NACL (NACL_SFI or NACL_NONSFI) / OS_NACL_SFI / OS_NACL_NONSFI |
| 9 // Compiler: |
| 10 // COMPILER_MSVC / COMPILER_GCC |
| 11 // Processor: |
| 12 // ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_X86_FAMILY (X86 or X86_64) |
| 13 // ARCH_CPU_32_BITS / ARCH_CPU_64_BITS |
| 14 |
| 15 #ifndef BUILD_BUILD_CONFIG_H_ |
| 16 #define BUILD_BUILD_CONFIG_H_ |
| 17 |
| 18 // A set of macros to use for platform detection. |
| 19 #if defined(__native_client__) |
| 20 // __native_client__ must be first, so that other OS_ defines are not set. |
| 21 #define OS_NACL 1 |
| 22 // OS_NACL comes in two sandboxing technology flavors, SFI or Non-SFI. |
| 23 // PNaCl toolchain defines __native_client_nonsfi__ macro in Non-SFI build |
| 24 // mode, while it does not in SFI build mode. |
| 25 #if defined(__native_client_nonsfi__) |
| 26 #define OS_NACL_NONSFI |
| 27 #else |
| 28 #define OS_NACL_SFI |
| 29 #endif |
| 30 #elif defined(ANDROID) |
| 31 #define OS_ANDROID 1 |
| 32 #elif defined(__APPLE__) |
| 33 // only include TargetConditions after testing ANDROID as some android builds |
| 34 // on mac don't have this header available and it's not needed unless the target |
| 35 // is really mac/ios. |
| 36 #include <TargetConditionals.h> |
| 37 #define OS_MACOSX 1 |
| 38 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE |
| 39 #define OS_IOS 1 |
| 40 #endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE |
| 41 #elif defined(__linux__) |
| 42 #define OS_LINUX 1 |
| 43 // include a system header to pull in features.h for glibc/uclibc macros. |
| 44 #include <unistd.h> |
| 45 #if defined(__GLIBC__) && !defined(__UCLIBC__) |
| 46 // we really are using glibc, not uClibc pretending to be glibc |
| 47 #define LIBC_GLIBC 1 |
| 48 #endif |
| 49 #elif defined(_WIN32) |
| 50 #define OS_WIN 1 |
| 51 #define TOOLKIT_VIEWS 1 |
| 52 #elif defined(__FreeBSD__) |
| 53 #define OS_FREEBSD 1 |
| 54 #elif defined(__OpenBSD__) |
| 55 #define OS_OPENBSD 1 |
| 56 #elif defined(__sun) |
| 57 #define OS_SOLARIS 1 |
| 58 #elif defined(__QNXNTO__) |
| 59 #define OS_QNX 1 |
| 60 #else |
| 61 #error Please add support for your platform in build/build_config.h |
| 62 #endif |
| 63 |
| 64 #if defined(USE_OPENSSL_CERTS) && defined(USE_NSS_CERTS) |
| 65 #error Cannot use both OpenSSL and NSS for certificates |
| 66 #endif |
| 67 |
| 68 // For access to standard BSD features, use OS_BSD instead of a |
| 69 // more specific macro. |
| 70 #if defined(OS_FREEBSD) || defined(OS_OPENBSD) |
| 71 #define OS_BSD 1 |
| 72 #endif |
| 73 |
| 74 // For access to standard POSIXish features, use OS_POSIX instead of a |
| 75 // more specific macro. |
| 76 #if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || \ |
| 77 defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID) || \ |
| 78 defined(OS_NACL) || defined(OS_QNX) |
| 79 #define OS_POSIX 1 |
| 80 #endif |
| 81 |
| 82 // Use tcmalloc |
| 83 #if (defined(OS_WIN) || defined(OS_LINUX) || defined(OS_ANDROID)) && \ |
| 84 !defined(NO_TCMALLOC) |
| 85 #define USE_TCMALLOC 1 |
| 86 #endif |
| 87 |
| 88 // Compiler detection. |
| 89 #if defined(__GNUC__) |
| 90 #define COMPILER_GCC 1 |
| 91 #elif defined(_MSC_VER) |
| 92 #define COMPILER_MSVC 1 |
| 93 #else |
| 94 #error Please add support for your compiler in build/build_config.h |
| 95 #endif |
| 96 |
| 97 // Processor architecture detection. For more info on what's defined, see: |
| 98 // http://msdn.microsoft.com/en-us/library/b0084kay.aspx |
| 99 // http://www.agner.org/optimize/calling_conventions.pdf |
| 100 // or with gcc, run: "echo | gcc -E -dM -" |
| 101 #if defined(_M_X64) || defined(__x86_64__) |
| 102 #define ARCH_CPU_X86_FAMILY 1 |
| 103 #define ARCH_CPU_X86_64 1 |
| 104 #define ARCH_CPU_64_BITS 1 |
| 105 #define ARCH_CPU_LITTLE_ENDIAN 1 |
| 106 #elif defined(_M_IX86) || defined(__i386__) |
| 107 #define ARCH_CPU_X86_FAMILY 1 |
| 108 #define ARCH_CPU_X86 1 |
| 109 #define ARCH_CPU_32_BITS 1 |
| 110 #define ARCH_CPU_LITTLE_ENDIAN 1 |
| 111 #elif defined(__ARMEL__) |
| 112 #define ARCH_CPU_ARM_FAMILY 1 |
| 113 #define ARCH_CPU_ARMEL 1 |
| 114 #define ARCH_CPU_32_BITS 1 |
| 115 #define ARCH_CPU_LITTLE_ENDIAN 1 |
| 116 #elif defined(__aarch64__) |
| 117 #define ARCH_CPU_ARM_FAMILY 1 |
| 118 #define ARCH_CPU_ARM64 1 |
| 119 #define ARCH_CPU_64_BITS 1 |
| 120 #define ARCH_CPU_LITTLE_ENDIAN 1 |
| 121 #elif defined(__pnacl__) |
| 122 #define ARCH_CPU_32_BITS 1 |
| 123 #define ARCH_CPU_LITTLE_ENDIAN 1 |
| 124 #elif defined(__MIPSEL__) |
| 125 #if defined(__LP64__) |
| 126 #define ARCH_CPU_MIPS64_FAMILY 1 |
| 127 #define ARCH_CPU_MIPS64EL 1 |
| 128 #define ARCH_CPU_64_BITS 1 |
| 129 #define ARCH_CPU_LITTLE_ENDIAN 1 |
| 130 #else |
| 131 #define ARCH_CPU_MIPS_FAMILY 1 |
| 132 #define ARCH_CPU_MIPSEL 1 |
| 133 #define ARCH_CPU_32_BITS 1 |
| 134 #define ARCH_CPU_LITTLE_ENDIAN 1 |
| 135 #endif |
| 136 #else |
| 137 #error Please add support for your architecture in build/build_config.h |
| 138 #endif |
| 139 |
| 140 // Type detection for wchar_t. |
| 141 #if defined(OS_WIN) |
| 142 #define WCHAR_T_IS_UTF16 |
| 143 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ |
| 144 defined(__WCHAR_MAX__) && \ |
| 145 (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff) |
| 146 #define WCHAR_T_IS_UTF32 |
| 147 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && \ |
| 148 defined(__WCHAR_MAX__) && \ |
| 149 (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff) |
| 150 // On Posix, we'll detect short wchar_t, but projects aren't guaranteed to |
| 151 // compile in this mode (in particular, Chrome doesn't). This is intended for |
| 152 // other projects using base who manage their own dependencies and make sure |
| 153 // short wchar works for them. |
| 154 #define WCHAR_T_IS_UTF16 |
| 155 #else |
| 156 #error Please add support for your compiler in build/build_config.h |
| 157 #endif |
| 158 |
| 159 #if defined(OS_ANDROID) |
| 160 // The compiler thinks std::string::const_iterator and "const char*" are |
| 161 // equivalent types. |
| 162 #define STD_STRING_ITERATOR_IS_CHAR_POINTER |
| 163 // The compiler thinks base::string16::const_iterator and "char16*" are |
| 164 // equivalent types. |
| 165 #define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER |
| 166 #endif |
| 167 |
| 168 #endif // BUILD_BUILD_CONFIG_H_ |
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