build_config.h (12984B)
1 // Copyright 2012 The Chromium Authors 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 doesn't belong to any GN target by design for faster build and 6 // less developer overhead. 7 8 // This file adds build flags about the OS we're currently building on. They are 9 // defined directly in this file instead of via a `buildflag_header` target in a 10 // GN file for faster build. They are defined using the corresponding OS defines 11 // (e.g. OS_WIN) which are also defined in this file (except for OS_CHROMEOS, 12 // which is set by the build system). These defines are deprecated and should 13 // NOT be used directly. For example: 14 // Please Use: #if BUILDFLAG(IS_WIN) 15 // Deprecated: #if defined(OS_WIN) 16 // 17 // Operating System: 18 // IS_AIX / IS_ANDROID / IS_ASMJS / IS_CHROMEOS / IS_FREEBSD / IS_FUCHSIA / 19 // IS_IOS / IS_IOS_MACCATALYST / IS_IOS_TVOS / IS_LINUX / IS_MAC / IS_NACL / 20 // IS_NETBSD / IS_OPENBSD / IS_QNX / IS_SOLARIS / IS_WATCHOS / IS_WIN 21 // Operating System family: 22 // IS_APPLE: IOS or MAC or IOS_MACCATALYST or IOS_TVOS or WATCHOS 23 // IS_BSD: FREEBSD or NETBSD or OPENBSD 24 // IS_POSIX: AIX or ANDROID or ASMJS or CHROMEOS or FREEBSD or IOS or LINUX 25 // or MAC or NACL or NETBSD or OPENBSD or QNX or SOLARIS 26 27 // This file also adds defines specific to the platform, architecture etc. 28 // 29 // Platform: 30 // IS_OZONE 31 // 32 // Compiler: 33 // COMPILER_MSVC / COMPILER_GCC 34 // 35 // Processor: 36 // ARCH_CPU_ARM64 / ARCH_CPU_ARMEL / ARCH_CPU_LOONGARCH32 / 37 // ARCH_CPU_LOONGARCH64 / ARCH_CPU_MIPS / ARCH_CPU_MIPS64 / 38 // ARCH_CPU_MIPS64EL / ARCH_CPU_MIPSEL / ARCH_CPU_PPC64 / ARCH_CPU_S390 / 39 // ARCH_CPU_S390X / ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_RISCV64 40 // Processor family: 41 // ARCH_CPU_ARM_FAMILY: ARMEL or ARM64 42 // ARCH_CPU_LOONGARCH_FAMILY: LOONGARCH32 or LOONGARCH64 43 // ARCH_CPU_MIPS_FAMILY: MIPS64EL or MIPSEL or MIPS64 or MIPS 44 // ARCH_CPU_PPC64_FAMILY: PPC64 45 // ARCH_CPU_S390_FAMILY: S390 or S390X 46 // ARCH_CPU_X86_FAMILY: X86 or X86_64 47 // ARCH_CPU_RISCV_FAMILY: Riscv64 48 // Processor features: 49 // ARCH_CPU_31_BITS / ARCH_CPU_32_BITS / ARCH_CPU_64_BITS 50 // ARCH_CPU_BIG_ENDIAN / ARCH_CPU_LITTLE_ENDIAN 51 52 #ifndef BUILD_BUILD_CONFIG_H_ 53 #define BUILD_BUILD_CONFIG_H_ 54 55 #include "build/buildflag.h" // IWYU pragma: export 56 57 // Clangd does not detect BUILDFLAG_INTERNAL_* indirect usage, so mark the 58 // header as "always_keep" to avoid "unused include" warning. 59 // 60 // IWYU pragma: always_keep 61 62 // A set of macros to use for platform detection. 63 #if defined(__native_client__) 64 // __native_client__ must be first, so that other OS_ defines are not set. 65 #define OS_NACL 1 66 #elif defined(ANDROID) 67 #define OS_ANDROID 1 68 #elif defined(__APPLE__) 69 // Only include TargetConditionals after testing ANDROID as some Android builds 70 // on the Mac have this header available and it's not needed unless the target 71 // is really an Apple platform. 72 #include <TargetConditionals.h> 73 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE 74 #define OS_IOS 1 75 // Catalyst is the technology that allows running iOS apps on macOS. These 76 // builds are both OS_IOS and OS_IOS_MACCATALYST. 77 #if defined(TARGET_OS_MACCATALYST) && TARGET_OS_MACCATALYST 78 #define OS_IOS_MACCATALYST 79 #endif // defined(TARGET_OS_MACCATALYST) && TARGET_OS_MACCATALYST 80 #if defined(TARGET_OS_TV) && TARGET_OS_TV 81 #define OS_IOS_TVOS 1 82 #endif // defined(TARGET_OS_TV) && TARGET_OS_TV 83 #if defined(TARGET_OS_WATCH) && TARGET_OS_WATCH 84 #define OS_WATCHOS 1 85 #endif // defined(TARGET_OS_WATCH) && TARGET_OS_WATCH 86 #else 87 #define OS_MAC 1 88 #endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE 89 #elif defined(__linux__) 90 #if !defined(OS_CHROMEOS) 91 // Do not define OS_LINUX on Chrome OS build. 92 // The OS_CHROMEOS macro is defined in GN. 93 #define OS_LINUX 1 94 #endif // !defined(OS_CHROMEOS) 95 // Include a system header to pull in features.h for glibc/uclibc macros. 96 #include <assert.h> 97 #if defined(__GLIBC__) && !defined(__UCLIBC__) 98 // We really are using glibc, not uClibc pretending to be glibc. 99 #define LIBC_GLIBC 1 100 #endif 101 #elif defined(_WIN32) 102 #define OS_WIN 1 103 #elif defined(__Fuchsia__) 104 #define OS_FUCHSIA 1 105 #elif defined(__FreeBSD__) 106 #define OS_FREEBSD 1 107 #elif defined(__NetBSD__) 108 #define OS_NETBSD 1 109 #elif defined(__OpenBSD__) 110 #define OS_OPENBSD 1 111 #elif defined(__sun) 112 #define OS_SOLARIS 1 113 #elif defined(__QNXNTO__) 114 #define OS_QNX 1 115 #elif defined(_AIX) 116 #define OS_AIX 1 117 #elif defined(__asmjs__) || defined(__wasm__) 118 #define OS_ASMJS 1 119 #elif defined(__MVS__) 120 #define OS_ZOS 1 121 #else 122 #error Please add support for your platform in build/build_config.h 123 #endif 124 // NOTE: Adding a new port? Please follow 125 // https://chromium.googlesource.com/chromium/src/+/main/docs/new_port_policy.md 126 127 #if defined(OS_MAC) || defined(OS_IOS) 128 #define OS_APPLE 1 129 #endif 130 131 // For access to standard BSD features, use OS_BSD instead of a 132 // more specific macro. 133 #if defined(OS_FREEBSD) || defined(OS_NETBSD) || defined(OS_OPENBSD) 134 #define OS_BSD 1 135 #endif 136 137 // For access to standard POSIXish features, use OS_POSIX instead of a 138 // more specific macro. 139 #if defined(OS_AIX) || defined(OS_ANDROID) || defined(OS_ASMJS) || \ 140 defined(OS_FREEBSD) || defined(OS_IOS) || defined(OS_LINUX) || \ 141 defined(OS_CHROMEOS) || defined(OS_MAC) || defined(OS_NACL) || \ 142 defined(OS_NETBSD) || defined(OS_OPENBSD) || defined(OS_QNX) || \ 143 defined(OS_SOLARIS) || defined(OS_ZOS) 144 #define OS_POSIX 1 145 #endif 146 147 // OS build flags 148 #if defined(OS_AIX) 149 #define BUILDFLAG_INTERNAL_IS_AIX() (1) 150 #else 151 #define BUILDFLAG_INTERNAL_IS_AIX() (0) 152 #endif 153 154 #if defined(OS_ANDROID) 155 #define BUILDFLAG_INTERNAL_IS_ANDROID() (1) 156 #else 157 #define BUILDFLAG_INTERNAL_IS_ANDROID() (0) 158 #endif 159 160 #if defined(OS_APPLE) 161 #define BUILDFLAG_INTERNAL_IS_APPLE() (1) 162 #else 163 #define BUILDFLAG_INTERNAL_IS_APPLE() (0) 164 #endif 165 166 #if defined(OS_ASMJS) 167 #define BUILDFLAG_INTERNAL_IS_ASMJS() (1) 168 #else 169 #define BUILDFLAG_INTERNAL_IS_ASMJS() (0) 170 #endif 171 172 #if defined(OS_BSD) 173 #define BUILDFLAG_INTERNAL_IS_BSD() (1) 174 #else 175 #define BUILDFLAG_INTERNAL_IS_BSD() (0) 176 #endif 177 178 #if defined(OS_CHROMEOS) 179 #define BUILDFLAG_INTERNAL_IS_CHROMEOS() (1) 180 #else 181 #define BUILDFLAG_INTERNAL_IS_CHROMEOS() (0) 182 #endif 183 184 #if defined(OS_FREEBSD) 185 #define BUILDFLAG_INTERNAL_IS_FREEBSD() (1) 186 #else 187 #define BUILDFLAG_INTERNAL_IS_FREEBSD() (0) 188 #endif 189 190 #if defined(OS_FUCHSIA) 191 #define BUILDFLAG_INTERNAL_IS_FUCHSIA() (1) 192 #else 193 #define BUILDFLAG_INTERNAL_IS_FUCHSIA() (0) 194 #endif 195 196 #if defined(OS_IOS) 197 #define BUILDFLAG_INTERNAL_IS_IOS() (1) 198 #else 199 #define BUILDFLAG_INTERNAL_IS_IOS() (0) 200 #endif 201 202 #if defined(OS_IOS_MACCATALYST) 203 #define BUILDFLAG_INTERNAL_IS_IOS_MACCATALYST() (1) 204 #else 205 #define BUILDFLAG_INTERNAL_IS_IOS_MACCATALYST() (0) 206 #endif 207 208 #if defined(OS_IOS_TVOS) 209 #define BUILDFLAG_INTERNAL_IS_IOS_TVOS() (1) 210 #else 211 #define BUILDFLAG_INTERNAL_IS_IOS_TVOS() (0) 212 #endif 213 214 #if defined(OS_LINUX) 215 #define BUILDFLAG_INTERNAL_IS_LINUX() (1) 216 #else 217 #define BUILDFLAG_INTERNAL_IS_LINUX() (0) 218 #endif 219 220 #if defined(OS_MAC) 221 #define BUILDFLAG_INTERNAL_IS_MAC() (1) 222 #else 223 #define BUILDFLAG_INTERNAL_IS_MAC() (0) 224 #endif 225 226 #if defined(OS_NACL) 227 #define BUILDFLAG_INTERNAL_IS_NACL() (1) 228 #else 229 #define BUILDFLAG_INTERNAL_IS_NACL() (0) 230 #endif 231 232 #if defined(OS_NETBSD) 233 #define BUILDFLAG_INTERNAL_IS_NETBSD() (1) 234 #else 235 #define BUILDFLAG_INTERNAL_IS_NETBSD() (0) 236 #endif 237 238 #if defined(OS_OPENBSD) 239 #define BUILDFLAG_INTERNAL_IS_OPENBSD() (1) 240 #else 241 #define BUILDFLAG_INTERNAL_IS_OPENBSD() (0) 242 #endif 243 244 #if defined(OS_POSIX) 245 #define BUILDFLAG_INTERNAL_IS_POSIX() (1) 246 #else 247 #define BUILDFLAG_INTERNAL_IS_POSIX() (0) 248 #endif 249 250 #if defined(OS_QNX) 251 #define BUILDFLAG_INTERNAL_IS_QNX() (1) 252 #else 253 #define BUILDFLAG_INTERNAL_IS_QNX() (0) 254 #endif 255 256 #if defined(OS_SOLARIS) 257 #define BUILDFLAG_INTERNAL_IS_SOLARIS() (1) 258 #else 259 #define BUILDFLAG_INTERNAL_IS_SOLARIS() (0) 260 #endif 261 262 #if defined(OS_WATCHOS) 263 #define BUILDFLAG_INTERNAL_IS_WATCHOS() (1) 264 #else 265 #define BUILDFLAG_INTERNAL_IS_WATCHOS() (0) 266 #endif 267 268 #if defined(OS_WIN) 269 #define BUILDFLAG_INTERNAL_IS_WIN() (1) 270 #else 271 #define BUILDFLAG_INTERNAL_IS_WIN() (0) 272 #endif 273 274 #if defined(USE_OZONE) 275 #define BUILDFLAG_INTERNAL_IS_OZONE() (1) 276 #else 277 #define BUILDFLAG_INTERNAL_IS_OZONE() (0) 278 #endif 279 280 // Compiler detection. Note: clang masquerades as GCC on POSIX and as MSVC on 281 // Windows. 282 #if defined(__GNUC__) 283 #define COMPILER_GCC 1 284 #elif defined(_MSC_VER) 285 #define COMPILER_MSVC 1 286 #else 287 #error Please add support for your compiler in build/build_config.h 288 #endif 289 290 // Processor architecture detection. For more info on what's defined, see: 291 // http://msdn.microsoft.com/en-us/library/b0084kay.aspx 292 // http://www.agner.org/optimize/calling_conventions.pdf 293 // or with gcc, run: "echo | gcc -E -dM -" 294 #if defined(_M_X64) || defined(__x86_64__) 295 #define ARCH_CPU_X86_FAMILY 1 296 #define ARCH_CPU_X86_64 1 297 #define ARCH_CPU_64_BITS 1 298 #define ARCH_CPU_LITTLE_ENDIAN 1 299 #elif defined(_M_IX86) || defined(__i386__) 300 #define ARCH_CPU_X86_FAMILY 1 301 #define ARCH_CPU_X86 1 302 #define ARCH_CPU_32_BITS 1 303 #define ARCH_CPU_LITTLE_ENDIAN 1 304 #elif defined(__s390x__) 305 #define ARCH_CPU_S390_FAMILY 1 306 #define ARCH_CPU_S390X 1 307 #define ARCH_CPU_64_BITS 1 308 #define ARCH_CPU_BIG_ENDIAN 1 309 #elif defined(__s390__) 310 #define ARCH_CPU_S390_FAMILY 1 311 #define ARCH_CPU_S390 1 312 #define ARCH_CPU_31_BITS 1 313 #define ARCH_CPU_BIG_ENDIAN 1 314 #elif (defined(__PPC64__) || defined(__PPC__)) && defined(__BIG_ENDIAN__) 315 #define ARCH_CPU_PPC64_FAMILY 1 316 #define ARCH_CPU_PPC64 1 317 #define ARCH_CPU_64_BITS 1 318 #define ARCH_CPU_BIG_ENDIAN 1 319 #elif defined(__PPC64__) 320 #define ARCH_CPU_PPC64_FAMILY 1 321 #define ARCH_CPU_PPC64 1 322 #define ARCH_CPU_64_BITS 1 323 #define ARCH_CPU_LITTLE_ENDIAN 1 324 #elif defined(__ARMEL__) 325 #define ARCH_CPU_ARM_FAMILY 1 326 #define ARCH_CPU_ARMEL 1 327 #define ARCH_CPU_32_BITS 1 328 #define ARCH_CPU_LITTLE_ENDIAN 1 329 #elif defined(__aarch64__) || defined(_M_ARM64) 330 #define ARCH_CPU_ARM_FAMILY 1 331 #define ARCH_CPU_ARM64 1 332 #define ARCH_CPU_64_BITS 1 333 #define ARCH_CPU_LITTLE_ENDIAN 1 334 #elif defined(__pnacl__) || defined(__asmjs__) || defined(__wasm__) 335 #define ARCH_CPU_32_BITS 1 336 #define ARCH_CPU_LITTLE_ENDIAN 1 337 #elif defined(__MIPSEL__) 338 #if defined(__LP64__) 339 #define ARCH_CPU_MIPS_FAMILY 1 340 #define ARCH_CPU_MIPS64EL 1 341 #define ARCH_CPU_64_BITS 1 342 #define ARCH_CPU_LITTLE_ENDIAN 1 343 #else 344 #define ARCH_CPU_MIPS_FAMILY 1 345 #define ARCH_CPU_MIPSEL 1 346 #define ARCH_CPU_32_BITS 1 347 #define ARCH_CPU_LITTLE_ENDIAN 1 348 #endif 349 #elif defined(__MIPSEB__) 350 #if defined(__LP64__) 351 #define ARCH_CPU_MIPS_FAMILY 1 352 #define ARCH_CPU_MIPS64 1 353 #define ARCH_CPU_64_BITS 1 354 #define ARCH_CPU_BIG_ENDIAN 1 355 #else 356 #define ARCH_CPU_MIPS_FAMILY 1 357 #define ARCH_CPU_MIPS 1 358 #define ARCH_CPU_32_BITS 1 359 #define ARCH_CPU_BIG_ENDIAN 1 360 #endif 361 #elif defined(__loongarch__) 362 #define ARCH_CPU_LOONGARCH_FAMILY 1 363 #define ARCH_CPU_LITTLE_ENDIAN 1 364 #if __loongarch_grlen == 64 365 #define ARCH_CPU_LOONGARCH64 1 366 #define ARCH_CPU_64_BITS 1 367 #else 368 #define ARCH_CPU_LOONGARCH32 1 369 #define ARCH_CPU_32_BITS 1 370 #endif 371 #elif defined(__riscv) && (__riscv_xlen == 64) 372 #define ARCH_CPU_RISCV_FAMILY 1 373 #define ARCH_CPU_RISCV64 1 374 #define ARCH_CPU_64_BITS 1 375 #define ARCH_CPU_LITTLE_ENDIAN 1 376 #elif defined(__sparc__) 377 #if defined(__LP64__) 378 #define ARCH_CPU_SPARC64 1 379 #define ARCH_CPU_64_BITS 1 380 #define ARCH_CPU_BIG_ENDIAN 1 381 #endif 382 #define ARCH_CPU_SPARC 1 383 #define ARCH_CPU_32_BITS 1 384 #define ARCH_CPU_BIG_ENDIAN 1 385 #else 386 #error Please add support for your architecture in build/build_config.h 387 #endif 388 389 // Type detection for wchar_t. 390 #if defined(OS_WIN) 391 #define WCHAR_T_IS_16_BIT 392 #elif defined(OS_FUCHSIA) 393 #define WCHAR_T_IS_32_BIT 394 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \ 395 (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff) 396 #define WCHAR_T_IS_32_BIT 397 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \ 398 (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff) 399 // On Posix, we'll detect short wchar_t, but projects aren't guaranteed to 400 // compile in this mode (in particular, Chrome doesn't). This is intended for 401 // other projects using base who manage their own dependencies and make sure 402 // short wchar works for them. 403 #define WCHAR_T_IS_16_BIT 404 #else 405 #error Please add support for your compiler in build/build_config.h 406 #endif 407 408 #if defined(OS_ANDROID) 409 // The compiler thinks std::string::const_iterator and "const char*" are 410 // equivalent types. 411 #define STD_STRING_ITERATOR_IS_CHAR_POINTER 412 // The compiler thinks std::u16string::const_iterator and "char16*" are 413 // equivalent types. 414 #define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER 415 #endif 416 417 // Architecture-specific feature detection. 418 419 #if !defined(CPU_ARM_NEON) 420 #if defined(ARCH_CPU_ARM_FAMILY) && \ 421 (defined(__ARM_NEON__) || defined(__ARM_NEON)) 422 #define CPU_ARM_NEON 1 423 #endif 424 #endif // !defined(CPU_ARM_NEON) 425 426 // Sanity check. 427 #if defined(ARCH_CPU_ARM64) && !defined(CPU_ARM_NEON) 428 #error "AArch64 mandates NEON, should be detected" 429 #endif 430 431 #if !defined(HAVE_MIPS_MSA_INTRINSICS) 432 #if defined(__mips_msa) && defined(__mips_isa_rev) && (__mips_isa_rev >= 5) 433 #define HAVE_MIPS_MSA_INTRINSICS 1 434 #endif 435 #endif 436 437 #endif // BUILD_BUILD_CONFIG_H_