/**
* Build a {@link HeaderSymlinkTree} of all the shared libraries found via the top-level rule's
* transitive dependencies.
*/
public static SymlinkTree createSharedLibrarySymlinkTree(
TargetGraph targetGraph,
BuildRuleParams params,
SourcePathResolver pathResolver,
CxxPlatform cxxPlatform,
Predicate<Object> traverse) {
BuildTarget symlinkTreeTarget =
createSharedLibrarySymlinkTreeTarget(params.getBuildTarget(), cxxPlatform.getFlavor());
Path symlinkTreeRoot =
getSharedLibrarySymlinkTreePath(params.getBuildTarget(), cxxPlatform.getFlavor());
ImmutableSortedMap<String, SourcePath> libraries =
NativeLinkables.getTransitiveSharedLibraries(
targetGraph, cxxPlatform, params.getDeps(), Linker.LinkableDepType.SHARED, traverse);
ImmutableMap.Builder<Path, SourcePath> links = ImmutableMap.builder();
for (Map.Entry<String, SourcePath> ent : libraries.entrySet()) {
links.put(Paths.get(ent.getKey()), ent.getValue());
}
try {
return new SymlinkTree(
params.copyWithChanges(
symlinkTreeTarget,
Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>of()),
Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>of())),
pathResolver,
symlinkTreeRoot,
links.build());
} catch (SymlinkTree.InvalidSymlinkTreeException e) {
throw new RuntimeException(e.getMessage());
}
}
/**
* Build the {@link HeaderSymlinkTree} rule using the original build params from a target node. In
* particular, make sure to drop all dependencies from the original build rule params, as these
* are modeled via {@link CxxPreprocessAndCompile}.
*/
public static HeaderSymlinkTree createHeaderSymlinkTreeBuildRule(
SourcePathResolver resolver,
BuildTarget target,
BuildRuleParams params,
Path root,
Optional<Path> headerMapPath,
ImmutableMap<Path, SourcePath> links) {
// Symlink trees never need to depend on anything.
BuildRuleParams paramsWithoutDeps =
params.copyWithChanges(
target,
Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>of()),
Suppliers.ofInstance(ImmutableSortedSet.<BuildRule>of()));
try {
if (headerMapPath.isPresent()) {
return new HeaderSymlinkTreeWithHeaderMap(
paramsWithoutDeps, resolver, root, headerMapPath.get(), links);
} else {
return new HeaderSymlinkTree(paramsWithoutDeps, resolver, root, links);
}
} catch (SymlinkTree.InvalidSymlinkTreeException e) {
throw e.getHumanReadableExceptionForBuildTarget(target.getUnflavoredBuildTarget());
}
}