@Override
public ConfiguredTarget create(RuleContext ruleContext)
throws RuleErrorException, InterruptedException {
TransitiveInfoCollection lipoContextCollector =
ruleContext.getPrerequisite(":lipo_context_collector", Mode.DONT_CHECK);
if (lipoContextCollector != null
&& lipoContextCollector.getProvider(LipoContextProvider.class) == null) {
ruleContext.ruleError("--lipo_context must point to a cc_binary or a cc_test rule");
return null;
}
CppConfiguration cppConfiguration =
Preconditions.checkNotNull(ruleContext.getFragment(CppConfiguration.class));
Path fdoZip =
ruleContext.getConfiguration().getCompilationMode() == CompilationMode.OPT
? cppConfiguration.getFdoZip()
: null;
SkyKey fdoKey =
FdoSupportValue.key(
cppConfiguration.getLipoMode(), fdoZip, cppConfiguration.getFdoInstrument());
SkyFunction.Environment skyframeEnv = ruleContext.getAnalysisEnvironment().getSkyframeEnv();
FdoSupportValue fdoSupport;
try {
fdoSupport =
(FdoSupportValue)
skyframeEnv.getValueOrThrow(fdoKey, FdoException.class, IOException.class);
} catch (FdoException | IOException e) {
ruleContext.ruleError("cannot initialize FDO: " + e.getMessage());
return null;
}
if (skyframeEnv.valuesMissing()) {
return null;
}
final Label label = ruleContext.getLabel();
final NestedSet<Artifact> crosstool =
ruleContext
.getPrerequisite("all_files", Mode.HOST)
.getProvider(FileProvider.class)
.getFilesToBuild();
final NestedSet<Artifact> crosstoolMiddleman = getFiles(ruleContext, "all_files");
final NestedSet<Artifact> compile = getFiles(ruleContext, "compiler_files");
final NestedSet<Artifact> strip = getFiles(ruleContext, "strip_files");
final NestedSet<Artifact> objcopy = getFiles(ruleContext, "objcopy_files");
final NestedSet<Artifact> link = getFiles(ruleContext, "linker_files");
final NestedSet<Artifact> dwp = getFiles(ruleContext, "dwp_files");
final NestedSet<Artifact> libcLink = inputsForLibc(ruleContext);
String purposePrefix = Actions.escapeLabel(label) + "_";
String runtimeSolibDirBase = "_solib_" + "_" + Actions.escapeLabel(label);
final PathFragment runtimeSolibDir =
ruleContext.getConfiguration().getBinFragment().getRelative(runtimeSolibDirBase);
// Static runtime inputs.
TransitiveInfoCollection staticRuntimeLibDep =
selectDep(ruleContext, "static_runtime_libs", cppConfiguration.getStaticRuntimeLibsLabel());
final NestedSet<Artifact> staticRuntimeLinkInputs;
final Artifact staticRuntimeLinkMiddleman;
if (cppConfiguration.supportsEmbeddedRuntimes()) {
staticRuntimeLinkInputs =
staticRuntimeLibDep.getProvider(FileProvider.class).getFilesToBuild();
} else {
staticRuntimeLinkInputs = NestedSetBuilder.emptySet(Order.STABLE_ORDER);
}
if (!staticRuntimeLinkInputs.isEmpty()) {
NestedSet<Artifact> staticRuntimeLinkMiddlemanSet =
CompilationHelper.getAggregatingMiddleman(
ruleContext, purposePrefix + "static_runtime_link", staticRuntimeLibDep);
staticRuntimeLinkMiddleman =
staticRuntimeLinkMiddlemanSet.isEmpty()
? null
: Iterables.getOnlyElement(staticRuntimeLinkMiddlemanSet);
} else {
staticRuntimeLinkMiddleman = null;
}
Preconditions.checkState(
(staticRuntimeLinkMiddleman == null) == staticRuntimeLinkInputs.isEmpty());
// Dynamic runtime inputs.
TransitiveInfoCollection dynamicRuntimeLibDep =
selectDep(
ruleContext, "dynamic_runtime_libs", cppConfiguration.getDynamicRuntimeLibsLabel());
final NestedSet<Artifact> dynamicRuntimeLinkInputs;
final Artifact dynamicRuntimeLinkMiddleman;
if (cppConfiguration.supportsEmbeddedRuntimes()) {
NestedSetBuilder<Artifact> dynamicRuntimeLinkInputsBuilder = NestedSetBuilder.stableOrder();
for (Artifact artifact :
dynamicRuntimeLibDep.getProvider(FileProvider.class).getFilesToBuild()) {
if (CppHelper.SHARED_LIBRARY_FILETYPES.matches(artifact.getFilename())) {
dynamicRuntimeLinkInputsBuilder.add(
SolibSymlinkAction.getCppRuntimeSymlink(
ruleContext, artifact, runtimeSolibDirBase, ruleContext.getConfiguration()));
} else {
dynamicRuntimeLinkInputsBuilder.add(artifact);
}
}
dynamicRuntimeLinkInputs = dynamicRuntimeLinkInputsBuilder.build();
} else {
dynamicRuntimeLinkInputs = NestedSetBuilder.emptySet(Order.STABLE_ORDER);
}
if (!dynamicRuntimeLinkInputs.isEmpty()) {
List<Artifact> dynamicRuntimeLinkMiddlemanSet =
CppHelper.getAggregatingMiddlemanForCppRuntimes(
ruleContext,
purposePrefix + "dynamic_runtime_link",
dynamicRuntimeLibDep,
runtimeSolibDirBase,
ruleContext.getConfiguration());
dynamicRuntimeLinkMiddleman =
dynamicRuntimeLinkMiddlemanSet.isEmpty()
? null
: Iterables.getOnlyElement(dynamicRuntimeLinkMiddlemanSet);
} else {
dynamicRuntimeLinkMiddleman = null;
}
Preconditions.checkState(
(dynamicRuntimeLinkMiddleman == null) == dynamicRuntimeLinkInputs.isEmpty());
CppCompilationContext.Builder contextBuilder = new CppCompilationContext.Builder(ruleContext);
CppModuleMap moduleMap = createCrosstoolModuleMap(ruleContext);
if (moduleMap != null) {
contextBuilder.setCppModuleMap(moduleMap);
}
final CppCompilationContext context = contextBuilder.build();
boolean supportsParamFiles = ruleContext.attributes().get("supports_param_files", BOOLEAN);
boolean supportsHeaderParsing =
ruleContext.attributes().get("supports_header_parsing", BOOLEAN);
NestedSetBuilder<Pair<String, String>> coverageEnvironment = NestedSetBuilder.compileOrder();
coverageEnvironment.add(
Pair.of("COVERAGE_GCOV_PATH", cppConfiguration.getGcovExecutable().getPathString()));
if (cppConfiguration.getFdoInstrument() != null) {
coverageEnvironment.add(
Pair.of("FDO_DIR", cppConfiguration.getFdoInstrument().getPathString()));
}
CcToolchainProvider provider =
new CcToolchainProvider(
cppConfiguration,
crosstool,
fullInputsForCrosstool(ruleContext, crosstoolMiddleman),
compile,
strip,
objcopy,
fullInputsForLink(ruleContext, link),
dwp,
libcLink,
staticRuntimeLinkInputs,
staticRuntimeLinkMiddleman,
dynamicRuntimeLinkInputs,
dynamicRuntimeLinkMiddleman,
runtimeSolibDir,
context,
supportsParamFiles,
supportsHeaderParsing,
getBuildVariables(ruleContext),
getBuiltinIncludes(ruleContext),
coverageEnvironment.build());
RuleConfiguredTargetBuilder builder =
new RuleConfiguredTargetBuilder(ruleContext)
.add(CcToolchainProvider.class, provider)
.add(FdoSupportProvider.class, new FdoSupportProvider(fdoSupport.getFdoSupport()))
.setFilesToBuild(new NestedSetBuilder<Artifact>(Order.STABLE_ORDER).build())
.add(RunfilesProvider.class, RunfilesProvider.simple(Runfiles.EMPTY));
// If output_license is specified on the cc_toolchain rule, override the transitive licenses
// with that one. This is necessary because cc_toolchain is used in the target configuration,
// but it is sort-of-kind-of a tool, but various parts of it are linked into the output...
// ...so we trust the judgment of the author of the cc_toolchain rule to figure out what
// licenses should be propagated to C++ targets.
License outputLicense = ruleContext.getRule().getToolOutputLicense(ruleContext.attributes());
if (outputLicense != null && outputLicense != License.NO_LICENSE) {
final NestedSet<TargetLicense> license =
NestedSetBuilder.create(
Order.STABLE_ORDER, new TargetLicense(ruleContext.getLabel(), outputLicense));
LicensesProvider licensesProvider =
new LicensesProvider() {
@Override
public NestedSet<TargetLicense> getTransitiveLicenses() {
return license;
}
};
builder.add(LicensesProvider.class, licensesProvider);
}
return builder.build();
}
/** Create context for cc compile action from generated inputs. */
private CppCompilationContext initializeCppCompilationContext(CppModel model) {
CppCompilationContext.Builder contextBuilder = new CppCompilationContext.Builder(ruleContext);
// Setup the include path; local include directories come before those inherited from deps or
// from the toolchain; in case of aliasing (same include file found on different entries),
// prefer the local include rather than the inherited one.
// Add in the roots for well-formed include names for source files and
// generated files. It is important that the execRoot (EMPTY_FRAGMENT) comes
// before the genfilesFragment to preferably pick up source files. Otherwise
// we might pick up stale generated files.
PathFragment repositoryPath =
ruleContext.getLabel().getPackageIdentifier().getRepository().getPathFragment();
contextBuilder.addQuoteIncludeDir(repositoryPath);
contextBuilder.addQuoteIncludeDir(
ruleContext.getConfiguration().getGenfilesFragment().getRelative(repositoryPath));
for (PathFragment systemIncludeDir : systemIncludeDirs) {
contextBuilder.addSystemIncludeDir(systemIncludeDir);
}
for (PathFragment includeDir : includeDirs) {
contextBuilder.addIncludeDir(includeDir);
}
contextBuilder.mergeDependentContexts(
AnalysisUtils.getProviders(deps, CppCompilationContext.class));
CppHelper.mergeToolchainDependentContext(ruleContext, contextBuilder);
// But defines come after those inherited from deps.
contextBuilder.addDefines(defines);
// There are no ordering constraints for declared include dirs/srcs, or the pregrepped headers.
contextBuilder.addDeclaredIncludeSrcs(publicHeaders);
contextBuilder.addDeclaredIncludeSrcs(publicTextualHeaders);
contextBuilder.addDeclaredIncludeSrcs(privateHeaders);
contextBuilder.addPregreppedHeaderMap(
CppHelper.createExtractInclusions(ruleContext, semantics, publicHeaders));
contextBuilder.addPregreppedHeaderMap(
CppHelper.createExtractInclusions(ruleContext, semantics, publicTextualHeaders));
contextBuilder.addPregreppedHeaderMap(
CppHelper.createExtractInclusions(ruleContext, semantics, privateHeaders));
contextBuilder.addCompilationPrerequisites(prerequisites);
// Add this package's dir to declaredIncludeDirs, & this rule's headers to declaredIncludeSrcs
// Note: no include dir for STRICT mode.
if (headersCheckingMode == HeadersCheckingMode.WARN) {
contextBuilder.addDeclaredIncludeWarnDir(ruleContext.getLabel().getPackageFragment());
for (PathFragment looseIncludeDir : looseIncludeDirs) {
contextBuilder.addDeclaredIncludeWarnDir(looseIncludeDir);
}
} else if (headersCheckingMode == HeadersCheckingMode.LOOSE) {
contextBuilder.addDeclaredIncludeDir(ruleContext.getLabel().getPackageFragment());
for (PathFragment looseIncludeDir : looseIncludeDirs) {
contextBuilder.addDeclaredIncludeDir(looseIncludeDir);
}
}
if (featureConfiguration.isEnabled(CppRuleClasses.MODULE_MAPS)) {
CppModuleMap cppModuleMap = CppHelper.addCppModuleMapToContext(ruleContext, contextBuilder);
// TODO(bazel-team): addCppModuleMapToContext second-guesses whether module maps should
// actually be enabled, so we need to double-check here. Who would write code like this?
if (cppModuleMap != null) {
CppModuleMapAction action =
new CppModuleMapAction(
ruleContext.getActionOwner(),
cppModuleMap,
privateHeaders,
publicHeaders,
collectModuleMaps(),
additionalExportedHeaders,
featureConfiguration.isEnabled(CppRuleClasses.HEADER_MODULES),
featureConfiguration.isEnabled(CppRuleClasses.MODULE_MAP_HOME_CWD),
featureConfiguration.isEnabled(CppRuleClasses.GENERATE_SUBMODULES),
!featureConfiguration.isEnabled(CppRuleClasses.MODULE_MAP_WITHOUT_EXTERN_MODULE));
ruleContext.registerAction(action);
}
if (model.getGeneratesPicHeaderModule()) {
contextBuilder.setPicHeaderModule(model.getPicHeaderModule(cppModuleMap.getArtifact()));
}
if (model.getGeneratesNoPicHeaderModule()) {
contextBuilder.setHeaderModule(model.getHeaderModule(cppModuleMap.getArtifact()));
}
if (featureConfiguration.isEnabled(CppRuleClasses.USE_HEADER_MODULES)
&& featureConfiguration.isEnabled(CppRuleClasses.TRANSITIVE_MODULE_MAPS)) {
contextBuilder.setProvideTransitiveModuleMaps(true);
}
}
semantics.setupCompilationContext(ruleContext, contextBuilder);
return contextBuilder.build();
}