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1 # Copyright (c) 2013 The Chromium Authors. All rights reserved. | 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 | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 # ============================================================================= | 5 # ============================================================================= |
6 # WHAT IS THIS FILE? | 6 # WHAT IS THIS FILE? |
7 # ============================================================================= | 7 # ============================================================================= |
8 # | 8 # |
9 # This is the master GN build configuration. This file is loaded after the | 9 # This is the master GN build configuration. This file is loaded after the |
10 # build args (args.gn) for the build directory and after the toplevel ".gn" | 10 # build args (args.gn) for the build directory and after the toplevel ".gn" |
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130 # separate flags. | 130 # separate flags. |
131 is_official_build = false | 131 is_official_build = false |
132 | 132 |
133 # Whether we're a traditional desktop unix. | 133 # Whether we're a traditional desktop unix. |
134 is_desktop_linux = current_os == "linux" | 134 is_desktop_linux = current_os == "linux" |
135 | 135 |
136 # Set to true when compiling with the Clang compiler. Typically this is used | 136 # Set to true when compiling with the Clang compiler. Typically this is used |
137 # to configure warnings. | 137 # to configure warnings. |
138 is_clang = | 138 is_clang = |
139 current_os == "mac" || current_os == "ios" || current_os == "chromeos" || | 139 current_os == "mac" || current_os == "ios" || current_os == "chromeos" || |
| 140 current_os == "fuchsia" || |
140 (current_os == "linux" && current_cpu != "s390x" && | 141 (current_os == "linux" && current_cpu != "s390x" && |
141 current_cpu != "s390" && current_cpu != "ppc64" && current_cpu != "ppc") | 142 current_cpu != "s390" && current_cpu != "ppc64" && current_cpu != "ppc") |
142 | 143 |
143 # Allows the path to a custom target toolchain to be injected as a single | 144 # Allows the path to a custom target toolchain to be injected as a single |
144 # argument, and set as the default toolchain. | 145 # argument, and set as the default toolchain. |
145 custom_toolchain = "" | 146 custom_toolchain = "" |
146 | 147 |
147 # This should not normally be set as a build argument. It's here so that | 148 # This should not normally be set as a build argument. It's here so that |
148 # every toolchain can pass through the "global" value via toolchain_args(). | 149 # every toolchain can pass through the "global" value via toolchain_args(). |
149 host_toolchain = "" | 150 host_toolchain = "" |
150 | 151 |
151 # DON'T ADD MORE FLAGS HERE. Read the comment above. | 152 # DON'T ADD MORE FLAGS HERE. Read the comment above. |
152 } | 153 } |
153 | 154 |
154 declare_args() { | 155 declare_args() { |
155 # Debug build. Enabling official builds automatically sets is_debug to false. | 156 # Debug build. Enabling official builds automatically sets is_debug to false. |
156 is_debug = !is_official_build | 157 is_debug = !is_official_build |
157 } | 158 } |
158 | 159 |
159 declare_args() { | 160 declare_args() { |
160 # Component build. Setting to true compiles targets declared as "components" | 161 # Component build. Setting to true compiles targets declared as "components" |
161 # as shared libraries loaded dynamically. This speeds up development time. | 162 # as shared libraries loaded dynamically. This speeds up development time. |
162 # When false, components will be linked statically. | 163 # When false, components will be linked statically. |
163 # | 164 # |
164 # For more information see | 165 # For more information see |
165 # https://chromium.googlesource.com/chromium/src/+/master/docs/component_build
.md | 166 # https://chromium.googlesource.com/chromium/src/+/master/docs/component_build
.md |
166 is_component_build = is_debug && current_os != "ios" | 167 is_component_build = |
| 168 is_debug && current_os != "ios" && current_os != "fuchsia" |
167 } | 169 } |
168 | 170 |
169 assert(!(is_debug && is_official_build), "Can't do official debug builds") | 171 assert(!(is_debug && is_official_build), "Can't do official debug builds") |
170 | 172 |
171 # ============================================================================== | 173 # ============================================================================== |
172 # TOOLCHAIN SETUP | 174 # TOOLCHAIN SETUP |
173 # ============================================================================== | 175 # ============================================================================== |
174 # | 176 # |
175 # Here we set the default toolchain, as well as the variable host_toolchain | 177 # Here we set the default toolchain, as well as the variable host_toolchain |
176 # which will identify the toolchain corresponding to the local system when | 178 # which will identify the toolchain corresponding to the local system when |
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226 } else { | 228 } else { |
227 _default_toolchain = "//build/toolchain/android:android_$target_cpu" | 229 _default_toolchain = "//build/toolchain/android:android_$target_cpu" |
228 } | 230 } |
229 } else if (target_os == "chromeos" || target_os == "linux") { | 231 } else if (target_os == "chromeos" || target_os == "linux") { |
230 # See comments in build/toolchain/cros/BUILD.gn about board compiles. | 232 # See comments in build/toolchain/cros/BUILD.gn about board compiles. |
231 if (is_clang) { | 233 if (is_clang) { |
232 _default_toolchain = "//build/toolchain/linux:clang_$target_cpu" | 234 _default_toolchain = "//build/toolchain/linux:clang_$target_cpu" |
233 } else { | 235 } else { |
234 _default_toolchain = "//build/toolchain/linux:$target_cpu" | 236 _default_toolchain = "//build/toolchain/linux:$target_cpu" |
235 } | 237 } |
| 238 } else if (target_os == "fuchsia") { |
| 239 _default_toolchain = "//build/toolchain/fuchsia:$target_cpu" |
236 } else if (target_os == "ios") { | 240 } else if (target_os == "ios") { |
237 _default_toolchain = "//build/toolchain/mac:ios_clang_$target_cpu" | 241 _default_toolchain = "//build/toolchain/mac:ios_clang_$target_cpu" |
238 } else if (target_os == "mac") { | 242 } else if (target_os == "mac") { |
239 assert(host_os == "mac", "Mac cross-compiles are unsupported.") | 243 assert(host_os == "mac", "Mac cross-compiles are unsupported.") |
240 _default_toolchain = host_toolchain | 244 _default_toolchain = host_toolchain |
241 } else if (target_os == "win") { | 245 } else if (target_os == "win") { |
242 # On Windows we use the same toolchain for host and target by default. | 246 # On Windows we use the same toolchain for host and target by default. |
243 assert(target_os == host_os, "Win cross-compiles only work on win hosts.") | 247 assert(target_os == host_os, "Win cross-compiles only work on win hosts.") |
244 if (is_clang) { | 248 if (is_clang) { |
245 _default_toolchain = "//build/toolchain/win:clang_$target_cpu" | 249 _default_toolchain = "//build/toolchain/win:clang_$target_cpu" |
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278 # generally too different despite being based on the Linux kernel). | 282 # generally too different despite being based on the Linux kernel). |
279 # | 283 # |
280 # Do not add more is_* variants here for random lesser-used Unix systems like | 284 # Do not add more is_* variants here for random lesser-used Unix systems like |
281 # aix or one of the BSDs. If you need to check these, just check the | 285 # aix or one of the BSDs. If you need to check these, just check the |
282 # current_os value directly. | 286 # current_os value directly. |
283 | 287 |
284 if (current_os == "win" || current_os == "winrt_81" || | 288 if (current_os == "win" || current_os == "winrt_81" || |
285 current_os == "winrt_81_phone" || current_os == "winrt_10") { | 289 current_os == "winrt_81_phone" || current_os == "winrt_10") { |
286 is_android = false | 290 is_android = false |
287 is_chromeos = false | 291 is_chromeos = false |
| 292 is_fuchsia = false |
288 is_ios = false | 293 is_ios = false |
289 is_linux = false | 294 is_linux = false |
290 is_mac = false | 295 is_mac = false |
291 is_nacl = false | 296 is_nacl = false |
292 is_posix = false | 297 is_posix = false |
293 is_win = true | 298 is_win = true |
294 } else if (current_os == "mac") { | 299 } else if (current_os == "mac") { |
295 is_android = false | 300 is_android = false |
296 is_chromeos = false | 301 is_chromeos = false |
| 302 is_fuchsia = false |
297 is_ios = false | 303 is_ios = false |
298 is_linux = false | 304 is_linux = false |
299 is_mac = true | 305 is_mac = true |
300 is_nacl = false | 306 is_nacl = false |
301 is_posix = true | 307 is_posix = true |
302 is_win = false | 308 is_win = false |
303 } else if (current_os == "android") { | 309 } else if (current_os == "android") { |
304 is_android = true | 310 is_android = true |
305 is_chromeos = false | 311 is_chromeos = false |
| 312 is_fuchsia = false |
306 is_ios = false | 313 is_ios = false |
307 is_linux = false | 314 is_linux = false |
308 is_mac = false | 315 is_mac = false |
309 is_nacl = false | 316 is_nacl = false |
310 is_posix = true | 317 is_posix = true |
311 is_win = false | 318 is_win = false |
312 } else if (current_os == "chromeos") { | 319 } else if (current_os == "chromeos") { |
313 is_android = false | 320 is_android = false |
314 is_chromeos = true | 321 is_chromeos = true |
| 322 is_fuchsia = false |
315 is_ios = false | 323 is_ios = false |
316 is_linux = true | 324 is_linux = true |
317 is_mac = false | 325 is_mac = false |
318 is_nacl = false | 326 is_nacl = false |
319 is_posix = true | 327 is_posix = true |
320 is_win = false | 328 is_win = false |
321 } else if (current_os == "nacl") { | 329 } else if (current_os == "nacl") { |
322 # current_os == "nacl" will be passed by the nacl toolchain definition. | 330 # current_os == "nacl" will be passed by the nacl toolchain definition. |
323 # It is not set by default or on the command line. We treat is as a | 331 # It is not set by default or on the command line. We treat is as a |
324 # Posix variant. | 332 # Posix variant. |
325 is_android = false | 333 is_android = false |
326 is_chromeos = false | 334 is_chromeos = false |
| 335 is_fuchsia = false |
327 is_ios = false | 336 is_ios = false |
328 is_linux = false | 337 is_linux = false |
329 is_mac = false | 338 is_mac = false |
330 is_nacl = true | 339 is_nacl = true |
331 is_posix = true | 340 is_posix = true |
332 is_win = false | 341 is_win = false |
| 342 } else if (current_os == "fuchsia") { |
| 343 is_android = false |
| 344 is_chromeos = false |
| 345 is_fuchsia = true |
| 346 is_ios = false |
| 347 is_linux = false |
| 348 is_mac = false |
| 349 is_nacl = false |
| 350 is_posix = true |
| 351 is_win = false |
333 } else if (current_os == "ios") { | 352 } else if (current_os == "ios") { |
334 is_android = false | 353 is_android = false |
335 is_chromeos = false | 354 is_chromeos = false |
| 355 is_fuchsia = false |
336 is_ios = true | 356 is_ios = true |
337 is_linux = false | 357 is_linux = false |
338 is_mac = false | 358 is_mac = false |
339 is_nacl = false | 359 is_nacl = false |
340 is_posix = true | 360 is_posix = true |
341 is_win = false | 361 is_win = false |
342 } else if (current_os == "linux") { | 362 } else if (current_os == "linux") { |
343 is_android = false | 363 is_android = false |
344 is_chromeos = false | 364 is_chromeos = false |
| 365 is_fuchsia = false |
345 is_ios = false | 366 is_ios = false |
346 is_linux = true | 367 is_linux = true |
347 is_mac = false | 368 is_mac = false |
348 is_nacl = false | 369 is_nacl = false |
349 is_posix = true | 370 is_posix = true |
350 is_win = false | 371 is_win = false |
351 } else if (current_os == "aix") { | 372 } else if (current_os == "aix") { |
352 is_android = false | 373 is_android = false |
353 is_chromeos = false | 374 is_chromeos = false |
354 is_ios = false | 375 is_ios = false |
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669 set_defaults("component") { | 690 set_defaults("component") { |
670 if (is_component_build) { | 691 if (is_component_build) { |
671 configs = default_shared_library_configs | 692 configs = default_shared_library_configs |
672 if (is_android) { | 693 if (is_android) { |
673 configs -= [ "//build/config/android:hide_all_but_jni_onload" ] | 694 configs -= [ "//build/config/android:hide_all_but_jni_onload" ] |
674 } | 695 } |
675 } else { | 696 } else { |
676 configs = default_compiler_configs | 697 configs = default_compiler_configs |
677 } | 698 } |
678 } | 699 } |
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