private ImmutableList<com.facebook.buck.rules.args.Arg> getExtensionArgs(
BuildRuleParams params,
BuildRuleResolver ruleResolver,
SourcePathResolver pathResolver,
CxxPlatform cxxPlatform,
Arg args)
throws NoSuchBuildTargetException {
// Extract all C/C++ sources from the constructor arg.
ImmutableMap<String, CxxSource> srcs =
CxxDescriptionEnhancer.parseCxxSources(
params.getBuildTarget(), pathResolver, cxxPlatform, args);
ImmutableMap<Path, SourcePath> headers =
CxxDescriptionEnhancer.parseHeaders(
params.getBuildTarget(), pathResolver, Optional.of(cxxPlatform), args);
// Setup the header symlink tree and combine all the preprocessor input from this rule
// and all dependencies.
HeaderSymlinkTree headerSymlinkTree =
CxxDescriptionEnhancer.requireHeaderSymlinkTree(
params,
ruleResolver,
new SourcePathResolver(ruleResolver),
cxxPlatform,
headers,
HeaderVisibility.PRIVATE);
ImmutableList<CxxPreprocessorInput> cxxPreprocessorInput =
CxxDescriptionEnhancer.collectCxxPreprocessorInput(
params,
cxxPlatform,
CxxFlags.getLanguageFlags(
args.preprocessorFlags,
args.platformPreprocessorFlags,
args.langPreprocessorFlags,
cxxPlatform),
ImmutableList.of(headerSymlinkTree),
ImmutableSet.<FrameworkPath>of(),
CxxPreprocessables.getTransitiveCxxPreprocessorInput(cxxPlatform, params.getDeps()));
// Generate rule to build the object files.
ImmutableMap<CxxPreprocessAndCompile, SourcePath> picObjects =
CxxSourceRuleFactory.requirePreprocessAndCompileRules(
params,
ruleResolver,
pathResolver,
cxxBuckConfig,
cxxPlatform,
cxxPreprocessorInput,
CxxFlags.getLanguageFlags(
args.compilerFlags,
args.platformCompilerFlags,
args.langCompilerFlags,
cxxPlatform),
args.prefixHeader,
cxxBuckConfig.getPreprocessMode(),
srcs,
CxxSourceRuleFactory.PicType.PIC);
ImmutableList.Builder<com.facebook.buck.rules.args.Arg> argsBuilder = ImmutableList.builder();
argsBuilder.addAll(
StringArg.from(CxxFlags.getFlags(args.linkerFlags, args.platformLinkerFlags, cxxPlatform)));
// Embed a origin-relative library path into the binary so it can find the shared libraries.
argsBuilder.addAll(
StringArg.from(
Linkers.iXlinker(
"-rpath",
String.format("%s/", cxxPlatform.getLd().resolve(ruleResolver).libOrigin()))));
// Add object files into the args.
argsBuilder.addAll(SourcePathArg.from(pathResolver, picObjects.values()));
return argsBuilder.build();
}
