/**
* Select .pcm inputs to pass on the command line depending on whether we are in pic or non-pic
* mode.
*/
private Collection<String> getHeaderModulePaths(CppCompileActionBuilder builder, boolean usePic) {
Collection<String> result = new LinkedHashSet<>();
NestedSet<Artifact> artifacts =
featureConfiguration.isEnabled(CppRuleClasses.HEADER_MODULE_INCLUDES_DEPENDENCIES)
? builder.getContext().getTopLevelHeaderModules(usePic)
: builder.getContext().getAdditionalInputs(usePic);
for (Artifact artifact : artifacts) {
String filename = artifact.getFilename();
if (!filename.endsWith(".pcm")) {
continue;
}
// Depending on whether this specific compile action is pic or non-pic, select the
// corresponding header modules. Note that the compilation context might give us both
// from targets that are built in both modes.
if (usePic == filename.endsWith(".pic.pcm")) {
result.add(artifact.getExecPathString());
}
}
return result;
}
private void setupCompileBuildVariables(
CppCompileActionBuilder builder,
boolean usePic,
PathFragment ccRelativeName,
PathFragment autoFdoImportPath,
Artifact gcnoFile,
Artifact dwoFile,
Map<String, String> sourceSpecificBuildVariables) {
CcToolchainFeatures.Variables.Builder buildVariables =
new CcToolchainFeatures.Variables.Builder();
// TODO(bazel-team): Pull out string constants for all build variables.
CppCompilationContext builderContext = builder.getContext();
CppModuleMap cppModuleMap = builderContext.getCppModuleMap();
Artifact sourceFile = builder.getSourceFile();
Artifact outputFile = builder.getOutputFile();
String realOutputFilePath;
buildVariables.addVariable("source_file", sourceFile.getExecPathString());
buildVariables.addVariable("output_file", outputFile.getExecPathString());
if (builder.getTempOutputFile() != null) {
realOutputFilePath = builder.getTempOutputFile().getPathString();
} else {
realOutputFilePath = builder.getOutputFile().getExecPathString();
}
if (FileType.contains(outputFile, CppFileTypes.ASSEMBLER, CppFileTypes.PIC_ASSEMBLER)) {
buildVariables.addVariable("output_assembly_file", realOutputFilePath);
} else if (FileType.contains(
outputFile,
CppFileTypes.PREPROCESSED_C,
CppFileTypes.PREPROCESSED_CPP,
CppFileTypes.PIC_PREPROCESSED_C,
CppFileTypes.PIC_PREPROCESSED_CPP)) {
buildVariables.addVariable("output_preprocess_file", realOutputFilePath);
} else {
buildVariables.addVariable("output_object_file", realOutputFilePath);
}
DotdFile dotdFile =
CppFileTypes.mustProduceDotdFile(sourceFile.getPath().toString())
? Preconditions.checkNotNull(builder.getDotdFile())
: null;
// Set dependency_file to enable <object>.d file generation.
if (dotdFile != null) {
buildVariables.addVariable("dependency_file", dotdFile.getSafeExecPath().getPathString());
}
if (featureConfiguration.isEnabled(CppRuleClasses.MODULE_MAPS) && cppModuleMap != null) {
// If the feature is enabled and cppModuleMap is null, we are about to fail during analysis
// in any case, but don't crash.
buildVariables.addVariable("module_name", cppModuleMap.getName());
buildVariables.addVariable("module_map_file", cppModuleMap.getArtifact().getExecPathString());
CcToolchainFeatures.Variables.ValueSequence.Builder sequence =
new CcToolchainFeatures.Variables.ValueSequence.Builder();
for (Artifact artifact : builderContext.getDirectModuleMaps()) {
sequence.addValue(artifact.getExecPathString());
}
buildVariables.addSequence("dependent_module_map_files", sequence.build());
}
if (featureConfiguration.isEnabled(CppRuleClasses.USE_HEADER_MODULES)) {
buildVariables.addSequenceVariable("module_files", getHeaderModulePaths(builder, usePic));
}
if (featureConfiguration.isEnabled(CppRuleClasses.INCLUDE_PATHS)) {
buildVariables.addSequenceVariable(
"include_paths", getSafePathStrings(builderContext.getIncludeDirs()));
buildVariables.addSequenceVariable(
"quote_include_paths", getSafePathStrings(builderContext.getQuoteIncludeDirs()));
buildVariables.addSequenceVariable(
"system_include_paths", getSafePathStrings(builderContext.getSystemIncludeDirs()));
}
if (featureConfiguration.isEnabled(CppRuleClasses.PREPROCESSOR_DEFINES)) {
String fdoBuildStamp = CppHelper.getFdoBuildStamp(ruleContext);
ImmutableList<String> defines;
if (fdoBuildStamp != null) {
// Stamp FDO builds with FDO subtype string
defines =
ImmutableList.<String>builder()
.addAll(builderContext.getDefines())
.add(
CppConfiguration.FDO_STAMP_MACRO
+ "=\""
+ CppHelper.getFdoBuildStamp(ruleContext)
+ "\"")
.build();
} else {
defines = builderContext.getDefines();
}
buildVariables.addSequenceVariable("preprocessor_defines", defines);
}
if (usePic) {
if (!featureConfiguration.isEnabled(CppRuleClasses.PIC)) {
ruleContext.ruleError("PIC compilation is requested but the toolchain does not support it");
}
buildVariables.addVariable("pic", "");
}
if (ccRelativeName != null) {
CppHelper.getFdoSupport(ruleContext)
.configureCompilation(
builder,
buildVariables,
ruleContext,
ccRelativeName,
autoFdoImportPath,
usePic,
featureConfiguration);
}
if (gcnoFile != null) {
buildVariables.addVariable("gcov_gcno_file", gcnoFile.getExecPathString());
}
if (dwoFile != null) {
buildVariables.addVariable("per_object_debug_info_file", dwoFile.getExecPathString());
}
buildVariables.addAllVariables(CppHelper.getToolchain(ruleContext).getBuildVariables());
buildVariables.addAllVariables(sourceSpecificBuildVariables);
for (VariablesExtension extension : variablesExtensions) {
extension.addVariables(buildVariables);
}
CcToolchainFeatures.Variables variables = buildVariables.build();
builder.setVariables(variables);
}