Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1 | # Copyright (c) 2013 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 | import("//build/config/allocator.gni") |
| 6 | import("//build/config/chrome_build.gni") |
| 7 | import("//build/config/chromecast_build.gni") |
| 8 | import("//build/config/crypto.gni") |
| 9 | import("//build/config/features.gni") |
| 10 | import("//build/config/sanitizers/sanitizers.gni") |
| 11 | import("//build/config/ui.gni") |
| 12 | import("//build/toolchain/goma.gni") |
| 13 | |
| 14 | # One common error that happens is that GYP-generated headers within gen/ get |
| 15 | # included rather than the GN-generated ones within gen/ subdirectories. |
| 16 | # TODO(GYP_GONE): Remove once GYP is gone (as well as exec_script exception). |
| 17 | assert( |
| 18 | exec_script("//build/dir_exists.py", [ "obj.host" ], "string") == "False", |
| 19 | "GYP artifacts detected in $root_build_dir.$0x0A" + |
| 20 | "You must wipe this directory before building with GN.") |
| 21 | |
| 22 | declare_args() { |
| 23 | # When set (the default) enables C++ iterator debugging in debug builds. |
| 24 | # Iterator debugging is always off in release builds (technically, this flag |
| 25 | # affects the "debug" config, which is always available but applied by |
| 26 | # default only in debug builds). |
| 27 | # |
| 28 | # Iterator debugging is generally useful for catching bugs. But it can |
| 29 | # introduce extra locking to check the state of an iterator against the state |
| 30 | # of the current object. For iterator- and thread-heavy code, this can |
| 31 | # significantly slow execution. |
| 32 | enable_iterator_debugging = true |
| 33 | |
| 34 | # Set to true to enable dcheck in Release builds. |
| 35 | dcheck_always_on = false |
| 36 | |
| 37 | # Normally we try to decide whether to use precompiled headers or |
| 38 | # not based on the other build arguments, but in some cases it is |
| 39 | # easiest to force them off explicitly. |
| 40 | disable_precompiled_headers = false |
| 41 | } |
| 42 | |
| 43 | # TODO(brettw) Most of these should be removed. Instead of global feature |
| 44 | # flags, we should have more modular flags that apply only to a target and its |
| 45 | # dependents. For example, depending on the "x11" meta-target should define |
| 46 | # USE_X11 for all dependents so that everything that could use X11 gets the |
| 47 | # define, but anything that doesn't depend on X11 doesn't see it. |
| 48 | # |
| 49 | # For now we define these globally to match the current GYP build. |
| 50 | config("feature_flags") { |
| 51 | # Don't use deprecated V8 APIs anywhere. |
| 52 | defines = [ "V8_DEPRECATION_WARNINGS" ] |
| 53 | if (enable_mdns) { |
| 54 | defines += [ "ENABLE_MDNS=1" ] |
| 55 | } |
| 56 | if (enable_notifications) { |
| 57 | defines += [ "ENABLE_NOTIFICATIONS" ] |
| 58 | } |
| 59 | if (enable_pepper_cdms) { |
| 60 | # TODO(brettw) should probably be "=1" |
| 61 | defines += [ "ENABLE_PEPPER_CDMS" ] |
| 62 | } |
| 63 | if (enable_browser_cdms) { |
| 64 | # TODO(brettw) should probably be "=1" |
| 65 | defines += [ "ENABLE_BROWSER_CDMS" ] |
| 66 | } |
| 67 | if (enable_plugins) { |
| 68 | defines += [ "ENABLE_PLUGINS=1" ] |
| 69 | } |
| 70 | if (enable_pdf) { |
| 71 | defines += [ "ENABLE_PDF=1" ] |
| 72 | } |
| 73 | if (enable_basic_printing || enable_print_preview) { |
| 74 | # Convenience define for ENABLE_BASIC_PRINTING || ENABLE_PRINT_PREVIEW. |
| 75 | defines += [ "ENABLE_PRINTING=1" ] |
| 76 | if (enable_basic_printing) { |
| 77 | # Enable basic printing support and UI. |
| 78 | defines += [ "ENABLE_BASIC_PRINTING=1" ] |
| 79 | } |
| 80 | if (enable_print_preview) { |
| 81 | # Enable printing with print preview. |
| 82 | # Can be defined without ENABLE_BASIC_PRINTING. |
| 83 | defines += [ "ENABLE_PRINT_PREVIEW=1" ] |
| 84 | } |
| 85 | } |
| 86 | if (enable_spellcheck) { |
| 87 | defines += [ "ENABLE_SPELLCHECK=1" ] |
| 88 | } |
| 89 | if (use_browser_spellchecker) { |
| 90 | defines += [ "USE_BROWSER_SPELLCHECKER=1" ] |
| 91 | } |
| 92 | if (dcheck_always_on) { |
| 93 | defines += [ "DCHECK_ALWAYS_ON=1" ] |
| 94 | } |
| 95 | if (use_udev) { |
| 96 | # TODO(brettw) should probably be "=1". |
| 97 | defines += [ "USE_UDEV" ] |
| 98 | } |
| 99 | if (ui_compositor_image_transport) { |
| 100 | # TODO(brettw) should probably be "=1". |
| 101 | defines += [ "UI_COMPOSITOR_IMAGE_TRANSPORT" ] |
| 102 | } |
| 103 | if (use_ash) { |
| 104 | defines += [ "USE_ASH=1" ] |
| 105 | } |
| 106 | if (use_aura) { |
| 107 | defines += [ "USE_AURA=1" ] |
| 108 | } |
| 109 | if (use_pango) { |
| 110 | defines += [ "USE_PANGO=1" ] |
| 111 | } |
| 112 | if (use_cairo) { |
| 113 | defines += [ "USE_CAIRO=1" ] |
| 114 | } |
| 115 | if (use_clipboard_aurax11) { |
| 116 | defines += [ "USE_CLIPBOARD_AURAX11=1" ] |
| 117 | } |
| 118 | if (use_default_render_theme) { |
| 119 | defines += [ "USE_DEFAULT_RENDER_THEME=1" ] |
| 120 | } |
| 121 | if (use_glib) { |
| 122 | defines += [ "USE_GLIB=1" ] |
| 123 | } |
| 124 | if (use_openssl_certs) { |
| 125 | defines += [ "USE_OPENSSL_CERTS=1" ] |
| 126 | } |
| 127 | if (use_nss_certs) { |
| 128 | defines += [ "USE_NSS_CERTS=1" ] |
| 129 | } |
| 130 | if (use_ozone) { |
| 131 | defines += [ "USE_OZONE=1" ] |
| 132 | } |
| 133 | if (use_x11) { |
| 134 | defines += [ "USE_X11=1" ] |
| 135 | } |
| 136 | if (use_allocator != "tcmalloc") { |
| 137 | defines += [ "NO_TCMALLOC" ] |
| 138 | } |
| 139 | if (is_asan || is_lsan || is_tsan || is_msan) { |
| 140 | defines += [ |
| 141 | "MEMORY_TOOL_REPLACES_ALLOCATOR", |
| 142 | "MEMORY_SANITIZER_INITIAL_SIZE", |
| 143 | ] |
| 144 | } |
| 145 | if (is_asan) { |
| 146 | defines += [ "ADDRESS_SANITIZER" ] |
| 147 | } |
| 148 | if (is_lsan) { |
| 149 | defines += [ |
| 150 | "LEAK_SANITIZER", |
| 151 | "WTF_USE_LEAK_SANITIZER=1", |
| 152 | ] |
| 153 | } |
| 154 | if (is_tsan) { |
| 155 | defines += [ |
| 156 | "THREAD_SANITIZER", |
| 157 | "DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL=1", |
| 158 | "WTF_USE_DYNAMIC_ANNOTATIONS_NOIMPL=1", |
| 159 | ] |
| 160 | } |
| 161 | if (is_msan) { |
| 162 | defines += [ "MEMORY_SANITIZER" ] |
| 163 | } |
| 164 | if (is_ubsan || is_ubsan_vptr || is_ubsan_security) { |
| 165 | defines += [ "UNDEFINED_SANITIZER" ] |
| 166 | } |
| 167 | if (enable_webrtc) { |
| 168 | defines += [ "ENABLE_WEBRTC=1" ] |
| 169 | } |
| 170 | if (!enable_nacl) { |
| 171 | defines += [ "DISABLE_NACL" ] |
| 172 | } |
| 173 | if (enable_extensions) { |
| 174 | defines += [ "ENABLE_EXTENSIONS=1" ] |
| 175 | } |
| 176 | if (enable_task_manager) { |
| 177 | defines += [ "ENABLE_TASK_MANAGER=1" ] |
| 178 | } |
| 179 | if (enable_themes) { |
| 180 | defines += [ "ENABLE_THEMES=1" ] |
| 181 | } |
| 182 | if (enable_captive_portal_detection) { |
| 183 | defines += [ "ENABLE_CAPTIVE_PORTAL_DETECTION=1" ] |
| 184 | } |
| 185 | if (enable_session_service) { |
| 186 | defines += [ "ENABLE_SESSION_SERVICE=1" ] |
| 187 | } |
| 188 | if (enable_rlz) { |
| 189 | defines += [ "ENABLE_RLZ" ] |
| 190 | } |
| 191 | if (enable_plugin_installation) { |
| 192 | defines += [ "ENABLE_PLUGIN_INSTALLATION=1" ] |
| 193 | } |
| 194 | if (enable_app_list) { |
| 195 | defines += [ "ENABLE_APP_LIST=1" ] |
| 196 | } |
| 197 | if (enable_settings_app) { |
| 198 | defines += [ "ENABLE_SETTINGS_APP=1" ] |
| 199 | } |
| 200 | if (enable_supervised_users) { |
| 201 | defines += [ "ENABLE_SUPERVISED_USERS=1" ] |
| 202 | } |
| 203 | if (enable_service_discovery) { |
| 204 | defines += [ "ENABLE_SERVICE_DISCOVERY=1" ] |
| 205 | } |
| 206 | if (enable_image_loader_extension) { |
| 207 | defines += [ "IMAGE_LOADER_EXTENSION=1" ] |
| 208 | } |
| 209 | if (enable_topchrome_md) { |
| 210 | defines += [ "ENABLE_TOPCHROME_MD=1" ] |
| 211 | } |
| 212 | if (enable_wayland_server) { |
| 213 | defines += [ "ENABLE_WAYLAND_SERVER=1" ] |
| 214 | } |
| 215 | if (enable_wifi_display) { |
| 216 | defines += [ "ENABLE_WIFI_DISPLAY=1" ] |
| 217 | } |
| 218 | if (proprietary_codecs) { |
| 219 | defines += [ "USE_PROPRIETARY_CODECS" ] |
| 220 | } |
| 221 | if (enable_hangout_services_extension) { |
| 222 | defines += [ "ENABLE_HANGOUT_SERVICES_EXTENSION=1" ] |
| 223 | } |
| 224 | if (enable_video_hole) { |
| 225 | defines += [ "VIDEO_HOLE=1" ] |
| 226 | } |
| 227 | if (safe_browsing_mode == 1) { |
| 228 | defines += [ "FULL_SAFE_BROWSING" ] |
| 229 | defines += [ "SAFE_BROWSING_CSD" ] |
| 230 | defines += [ "SAFE_BROWSING_DB_LOCAL" ] |
| 231 | } else if (safe_browsing_mode == 2) { |
| 232 | defines += [ "SAFE_BROWSING_DB_REMOTE" ] |
| 233 | } |
| 234 | if (is_official_build) { |
| 235 | defines += [ "OFFICIAL_BUILD" ] |
| 236 | } |
| 237 | if (is_chrome_branded) { |
| 238 | defines += [ "GOOGLE_CHROME_BUILD" ] |
| 239 | } else { |
| 240 | defines += [ "CHROMIUM_BUILD" ] |
| 241 | } |
| 242 | if (enable_media_router) { |
| 243 | defines += [ "ENABLE_MEDIA_ROUTER=1" ] |
| 244 | } |
| 245 | if (enable_webvr) { |
| 246 | defines += [ "ENABLE_WEBVR" ] |
| 247 | } |
| 248 | if (is_syzyasan) { |
| 249 | defines += [ |
| 250 | "SYZYASAN", |
| 251 | "MEMORY_TOOL_REPLACES_ALLOCATOR", |
| 252 | "MEMORY_SANITIZER_INITIAL_SIZE", |
| 253 | ] |
| 254 | } |
| 255 | if (!fieldtrial_testing_like_official_build && !is_chrome_branded) { |
| 256 | defines += [ "FIELDTRIAL_TESTING_ENABLED" ] |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | # Debug/release ---------------------------------------------------------------- |
| 261 | |
| 262 | config("debug") { |
| 263 | defines = [ |
| 264 | "_DEBUG", |
| 265 | "DYNAMIC_ANNOTATIONS_ENABLED=1", |
| 266 | "WTF_USE_DYNAMIC_ANNOTATIONS=1", |
| 267 | ] |
| 268 | |
| 269 | if (is_nacl) { |
| 270 | defines += [ "DYNAMIC_ANNOTATIONS_PREFIX=NACL_" ] |
| 271 | } |
| 272 | |
| 273 | if (is_win) { |
| 274 | if (!enable_iterator_debugging) { |
| 275 | # Iterator debugging is enabled by default by the compiler on debug |
| 276 | # builds, and we have to tell it to turn it off. |
| 277 | defines += [ "_HAS_ITERATOR_DEBUGGING=0" ] |
| 278 | } |
| 279 | } else if (is_linux && current_cpu == "x64" && enable_iterator_debugging) { |
| 280 | # Enable libstdc++ debugging facilities to help catch problems early, see |
| 281 | # http://crbug.com/65151 . |
| 282 | # TODO(phajdan.jr): Should we enable this for all of POSIX? |
| 283 | defines += [ "_GLIBCXX_DEBUG=1" ] |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | config("release") { |
| 288 | defines = [ "NDEBUG" ] |
| 289 | |
| 290 | # Sanitizers. |
| 291 | if (is_tsan) { |
| 292 | defines += [ |
| 293 | "DYNAMIC_ANNOTATIONS_ENABLED=1", |
| 294 | "WTF_USE_DYNAMIC_ANNOTATIONS=1", |
| 295 | ] |
| 296 | } else { |
| 297 | defines += [ "NVALGRIND" ] |
| 298 | if (!is_nacl) { |
| 299 | # NaCl always enables dynamic annotations. Currently this value is set to |
| 300 | # 1 for all .nexes. |
| 301 | defines += [ "DYNAMIC_ANNOTATIONS_ENABLED=0" ] |
| 302 | } |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | # Default libraries ------------------------------------------------------------ |
| 307 | |
| 308 | # This config defines the default libraries applied to all targets. |
| 309 | config("default_libs") { |
| 310 | if (is_win) { |
| 311 | # TODO(brettw) this list of defaults should probably be smaller, and |
| 312 | # instead the targets that use the less common ones (e.g. wininet or |
| 313 | # winspool) should include those explicitly. |
| 314 | libs = [ |
| 315 | "advapi32.lib", |
| 316 | "comdlg32.lib", |
| 317 | "dbghelp.lib", |
| 318 | "delayimp.lib", |
| 319 | "dnsapi.lib", |
| 320 | "gdi32.lib", |
| 321 | "kernel32.lib", |
| 322 | "msimg32.lib", |
| 323 | "odbc32.lib", |
| 324 | "odbccp32.lib", |
| 325 | "ole32.lib", |
| 326 | "oleaut32.lib", |
| 327 | "psapi.lib", |
| 328 | "shell32.lib", |
| 329 | "shlwapi.lib", |
| 330 | "user32.lib", |
| 331 | "usp10.lib", |
| 332 | "uuid.lib", |
| 333 | "version.lib", |
| 334 | "wininet.lib", |
| 335 | "winmm.lib", |
| 336 | "winspool.lib", |
| 337 | "ws2_32.lib", |
| 338 | |
| 339 | # Please don't add more stuff here. We should actually be making this |
| 340 | # list smaller, since all common things should be covered. If you need |
| 341 | # some extra libraries, please just add a libs = [ "foo.lib" ] to your |
| 342 | # target that needs it. |
| 343 | ] |
| 344 | } else if (is_android) { |
| 345 | libs = [ |
| 346 | "dl", |
| 347 | "m", |
| 348 | ] |
| 349 | } else if (is_mac) { |
| 350 | # Targets should choose to explicitly link frameworks they require. Since |
| 351 | # linking can have run-time side effects, nothing should be listed here. |
| 352 | libs = [] |
| 353 | } else if (is_ios) { |
| 354 | # The libraries listed here will be specified for both the target and the |
| 355 | # host. Only the common ones should be listed here. |
| 356 | libs = [ |
| 357 | "CoreFoundation.framework", |
| 358 | "CoreGraphics.framework", |
| 359 | "CoreText.framework", |
| 360 | "Foundation.framework", |
| 361 | ] |
| 362 | } else if (is_linux) { |
| 363 | libs = [ |
| 364 | "dl", |
| 365 | "rt", |
| 366 | ] |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | # Executable configs ----------------------------------------------------------- |
| 371 | |
| 372 | # Windows linker setup for EXEs and DLLs. |
| 373 | if (is_win) { |
| 374 | _windows_linker_configs = [ |
| 375 | "//build/config/win:sdk_link", |
| 376 | "//build/config/win:common_linker_setup", |
| 377 | ] |
| 378 | } |
| 379 | |
| 380 | # This config defines the configs applied to all executables. |
| 381 | config("executable_config") { |
| 382 | configs = [] |
| 383 | |
| 384 | if (is_win) { |
| 385 | configs += _windows_linker_configs |
| 386 | } else if (is_mac) { |
| 387 | configs += [ |
| 388 | "//build/config/mac:mac_dynamic_flags", |
| 389 | "//build/config/mac:mac_executable_flags", |
| 390 | ] |
| 391 | } else if (is_linux || is_android) { |
| 392 | configs += [ "//build/config/gcc:executable_ldconfig" ] |
| 393 | if (is_android) { |
| 394 | configs += [ "//build/config/android:executable_config" ] |
| 395 | } else if (is_chromecast) { |
| 396 | configs += [ "//build/config/chromecast:executable_config" ] |
| 397 | } |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | # Shared library configs ------------------------------------------------------- |
| 402 | |
| 403 | # This config defines the configs applied to all shared libraries. |
| 404 | config("shared_library_config") { |
| 405 | configs = [] |
| 406 | |
| 407 | if (is_win) { |
| 408 | configs += _windows_linker_configs |
| 409 | } else if (is_mac) { |
| 410 | configs += [ "//build/config/mac:mac_dynamic_flags" ] |
| 411 | } else if (is_chromecast) { |
| 412 | configs += [ "//build/config/chromecast:shared_library_config" ] |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | # Add this config to your target to enable precompiled headers. |
| 417 | # |
| 418 | # Precompiled headers are done on a per-target basis. If you have just a couple |
| 419 | # of files, the time it takes to precompile (~2 seconds) can actually be longer |
| 420 | # than the time saved. On a Z620, a 100 file target compiles about 2 seconds |
| 421 | # faster with precompiled headers, with greater savings for larger targets. |
| 422 | # |
| 423 | # Recommend precompiled headers for targets with more than 50 .cc files. |
| 424 | config("precompiled_headers") { |
| 425 | if (!is_official_build && !use_goma && !disable_precompiled_headers) { |
| 426 | if (is_win) { |
| 427 | # This is a string rather than a file GN knows about. It has to match |
| 428 | # exactly what's in the /FI flag below, and what might appear in the |
| 429 | # source code in quotes for an #include directive. |
| 430 | precompiled_header = "build/precompile.h" |
| 431 | |
| 432 | # This is a file that GN will compile with the above header. It will be |
| 433 | # implicitly added to the sources (potentially multiple times, with one |
| 434 | # variant for each language used in the target). |
| 435 | precompiled_source = "//build/precompile.cc" |
| 436 | |
| 437 | # Force include the header. |
| 438 | cflags = [ "/FI$precompiled_header" ] |
| 439 | |
| 440 | # Disable warning for "this file was empty after preprocessing". This |
| 441 | # error is generated only in C mode for ANSI compatibility. It conflicts |
| 442 | # with precompiled headers since the source file that's "compiled" for |
| 443 | # making the precompiled header is empty. |
| 444 | # |
| 445 | # This error doesn't happen every time. In VS2013, it seems if the .pch |
| 446 | # file doesn't exist, no error will be generated (probably MS tested this |
| 447 | # case but forgot the other one?). To reproduce this error, do a build, |
| 448 | # then delete the precompile.c.obj file, then build again. |
| 449 | cflags_c = [ "/wd4206" ] |
| 450 | } else if (is_mac) { |
| 451 | precompiled_header = "build/precompile.h" |
| 452 | precompiled_source = "//build/precompile.h" |
| 453 | } |
| 454 | } |
| 455 | } |