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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 #include "tools/gn/target.h" | 5 #include "tools/gn/target.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/strings/string_util.h" | 8 #include "base/strings/string_util.h" |
9 #include "base/strings/stringprintf.h" | 9 #include "base/strings/stringprintf.h" |
10 #include "tools/gn/config_values_extractors.h" | 10 #include "tools/gn/config_values_extractors.h" |
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163 // inherited through the dependency tree (other flags don't work this way). | 163 // inherited through the dependency tree (other flags don't work this way). |
164 for (ConfigValuesIterator iter(this); !iter.done(); iter.Next()) { | 164 for (ConfigValuesIterator iter(this); !iter.done(); iter.Next()) { |
165 const ConfigValues& cur = iter.cur(); | 165 const ConfigValues& cur = iter.cur(); |
166 all_lib_dirs_.append(cur.lib_dirs().begin(), cur.lib_dirs().end()); | 166 all_lib_dirs_.append(cur.lib_dirs().begin(), cur.lib_dirs().end()); |
167 all_libs_.append(cur.libs().begin(), cur.libs().end()); | 167 all_libs_.append(cur.libs().begin(), cur.libs().end()); |
168 } | 168 } |
169 | 169 |
170 PullDependentTargets(); | 170 PullDependentTargets(); |
171 PullForwardedDependentConfigs(); | 171 PullForwardedDependentConfigs(); |
172 PullRecursiveHardDeps(); | 172 PullRecursiveHardDeps(); |
| 173 if (!ResolvePrecompiledHeaders(err)) |
| 174 return false; |
173 | 175 |
174 FillOutputFiles(); | 176 FillOutputFiles(); |
175 | 177 |
176 if (settings()->build_settings()->check_for_bad_items()) { | 178 if (settings()->build_settings()->check_for_bad_items()) { |
177 if (!CheckVisibility(err)) | 179 if (!CheckVisibility(err)) |
178 return false; | 180 return false; |
179 if (!CheckTestonly(err)) | 181 if (!CheckTestonly(err)) |
180 return false; | 182 return false; |
181 if (!CheckNoNestedStaticLibs(err)) | 183 if (!CheckNoNestedStaticLibs(err)) |
182 return false; | 184 return false; |
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208 std::string Target::GetComputedOutputName(bool include_prefix) const { | 210 std::string Target::GetComputedOutputName(bool include_prefix) const { |
209 DCHECK(toolchain_) | 211 DCHECK(toolchain_) |
210 << "Toolchain must be specified before getting the computed output name."; | 212 << "Toolchain must be specified before getting the computed output name."; |
211 | 213 |
212 const std::string& name = output_name_.empty() ? label().name() | 214 const std::string& name = output_name_.empty() ? label().name() |
213 : output_name_; | 215 : output_name_; |
214 | 216 |
215 std::string result; | 217 std::string result; |
216 if (include_prefix) { | 218 if (include_prefix) { |
217 const Tool* tool = toolchain_->GetToolForTargetFinalOutput(this); | 219 const Tool* tool = toolchain_->GetToolForTargetFinalOutput(this); |
218 const std::string& prefix = tool->output_prefix(); | 220 if (tool) { |
219 // Only add the prefix if the name doesn't already have it. | 221 // Only add the prefix if the name doesn't already have it. |
220 if (!base::StartsWithASCII(name, prefix, true)) | 222 if (!base::StartsWithASCII(name, tool->output_prefix(), true)) |
221 result = prefix; | 223 result = tool->output_prefix(); |
| 224 } |
222 } | 225 } |
223 | |
224 result.append(name); | 226 result.append(name); |
225 return result; | 227 return result; |
226 } | 228 } |
227 | 229 |
228 bool Target::SetToolchain(const Toolchain* toolchain, Err* err) { | 230 bool Target::SetToolchain(const Toolchain* toolchain, Err* err) { |
229 DCHECK(!toolchain_); | 231 DCHECK(!toolchain_); |
230 DCHECK_NE(UNKNOWN, output_type_); | 232 DCHECK_NE(UNKNOWN, output_type_); |
231 toolchain_ = toolchain; | 233 toolchain_ = toolchain; |
232 | 234 |
233 const Tool* tool = toolchain->GetToolForTargetFinalOutput(this); | 235 const Tool* tool = toolchain->GetToolForTargetFinalOutput(this); |
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422 NormalizePath(&out.value()); | 424 NormalizePath(&out.value()); |
423 } | 425 } |
424 | 426 |
425 // Also count anything the target has declared to be an output. | 427 // Also count anything the target has declared to be an output. |
426 std::vector<SourceFile> outputs_as_sources; | 428 std::vector<SourceFile> outputs_as_sources; |
427 action_values_.GetOutputsAsSourceFiles(this, &outputs_as_sources); | 429 action_values_.GetOutputsAsSourceFiles(this, &outputs_as_sources); |
428 for (const SourceFile& out : outputs_as_sources) | 430 for (const SourceFile& out : outputs_as_sources) |
429 computed_outputs_.push_back(OutputFile(settings()->build_settings(), out)); | 431 computed_outputs_.push_back(OutputFile(settings()->build_settings(), out)); |
430 } | 432 } |
431 | 433 |
| 434 bool Target::ResolvePrecompiledHeaders(Err* err) { |
| 435 // Precompiled headers are stored on a ConfigValues struct. This way, the |
| 436 // build can set all the precompiled header settings in a config and apply |
| 437 // it to many targets. Likewise, the precompiled header values may be |
| 438 // specified directly on a target. |
| 439 // |
| 440 // Unlike other values on configs which are lists that just get concatenated, |
| 441 // the precompiled header settings are unique values. We allow them to be |
| 442 // specified anywhere, but if they are specified in more than one place all |
| 443 // places must match. |
| 444 |
| 445 // Track where the current settings came from for issuing errors. |
| 446 const Label* pch_header_settings_from = NULL; |
| 447 if (config_values_.has_precompiled_headers()) |
| 448 pch_header_settings_from = &label(); |
| 449 |
| 450 for (ConfigValuesIterator iter(this); !iter.done(); iter.Next()) { |
| 451 if (!iter.GetCurrentConfig()) |
| 452 continue; // Skip the one on the target itself. |
| 453 |
| 454 const Config* config = iter.GetCurrentConfig(); |
| 455 const ConfigValues& cur = config->config_values(); |
| 456 if (!cur.has_precompiled_headers()) |
| 457 continue; // This one has no precompiled header info, skip. |
| 458 |
| 459 if (config_values_.has_precompiled_headers()) { |
| 460 // Already have a precompiled header values, the settings must match. |
| 461 if (config_values_.precompiled_header() != cur.precompiled_header() || |
| 462 config_values_.precompiled_source() != cur.precompiled_source()) { |
| 463 *err = Err(defined_from(), |
| 464 "Precompiled header setting conflict.", |
| 465 "The target " + label().GetUserVisibleName(false) + "\n" |
| 466 "has conflicting precompiled header settings.\n" |
| 467 "\n" |
| 468 "From " + pch_header_settings_from->GetUserVisibleName(false) + |
| 469 "\n header: " + config_values_.precompiled_header() + |
| 470 "\n source: " + config_values_.precompiled_source().value() + |
| 471 "\n\n" |
| 472 "From " + config->label().GetUserVisibleName(false) + |
| 473 "\n header: " + cur.precompiled_header() + |
| 474 "\n source: " + cur.precompiled_source().value()); |
| 475 return false; |
| 476 } |
| 477 } else { |
| 478 // Have settings from a config, apply them to ourselves. |
| 479 pch_header_settings_from = &config->label(); |
| 480 config_values_.set_precompiled_header(cur.precompiled_header()); |
| 481 config_values_.set_precompiled_source(cur.precompiled_source()); |
| 482 } |
| 483 } |
| 484 |
| 485 return true; |
| 486 } |
| 487 |
432 bool Target::CheckVisibility(Err* err) const { | 488 bool Target::CheckVisibility(Err* err) const { |
433 for (const auto& pair : GetDeps(DEPS_ALL)) { | 489 for (const auto& pair : GetDeps(DEPS_ALL)) { |
434 if (!Visibility::CheckItemVisibility(this, pair.ptr, err)) | 490 if (!Visibility::CheckItemVisibility(this, pair.ptr, err)) |
435 return false; | 491 return false; |
436 } | 492 } |
437 return true; | 493 return true; |
438 } | 494 } |
439 | 495 |
440 bool Target::CheckTestonly(Err* err) const { | 496 bool Target::CheckTestonly(Err* err) const { |
441 // If the current target is marked testonly, it can include both testonly | 497 // If the current target is marked testonly, it can include both testonly |
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497 return; // Not in output dir, this is OK. | 553 return; // Not in output dir, this is OK. |
498 | 554 |
499 // Tell the scheduler about unknown files. This will be noted for later so | 555 // Tell the scheduler about unknown files. This will be noted for later so |
500 // the list of files written by the GN build itself (often response files) | 556 // the list of files written by the GN build itself (often response files) |
501 // can be filtered out of this list. | 557 // can be filtered out of this list. |
502 OutputFile out_file(settings()->build_settings(), source); | 558 OutputFile out_file(settings()->build_settings(), source); |
503 std::set<const Target*> seen_targets; | 559 std::set<const Target*> seen_targets; |
504 if (!EnsureFileIsGeneratedByDependency(this, out_file, true, &seen_targets)) | 560 if (!EnsureFileIsGeneratedByDependency(this, out_file, true, &seen_targets)) |
505 g_scheduler->AddUnknownGeneratedInput(this, source); | 561 g_scheduler->AddUnknownGeneratedInput(this, source); |
506 } | 562 } |
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