Add basic C++ path mapping support

Basic support for path mapping for `CppCompile` actions is added by wiring up `PathMapper` with:
* structured path variables for files and include paths (`Artifact` and `NestedSet<PathFragment>`)
* inputs/outputs via `Spawn#getPathMapper()`
* header discovery

Also turns `external_include_paths` into a structured variable, which was missed in bazelbuild#22463.

The following features are known to be unsupported for now:
* `layering_check` (requires rewriting paths to and in module maps)
* source tree artifacts (requires wiring up `PathMapper` in `CppCompileActionTemplate`)
* location expanded paths to generated files such as sanitizer suppression lists (requires heuristically rewriting paths in `user_compile_flags`)

These limitations will be lifted in follow-up PRs.

Work towards bazelbuild#6526

RELNOTES: Experimental support for path mapping `CppCompile` actions can be enabled via `--modify_execution_info=CppCompile=+supports-path-mapping`.

Closes bazelbuild#22445.

PiperOrigin-RevId: 646109274
Change-Id: I6f4eb92b6be3052547f144c681b6588e9fc40693

src/main/java/com/google/devtools/build/lib/actions/SimpleSpawn.java

@@ -42,6 +42,7 @@ public final class SimpleSpawn implements Spawn {
  private final ImmutableList<ActionInput> outputs;
  // If null, all outputs are mandatory.
  @Nullable private final Set<? extends ActionInput> mandatoryOutputs;
+ private final PathMapper pathMapper;
  private final LocalResourcesSupplier localResourcesSupplier;
  private ResourceSet localResourcesCached;
 
@@ -57,7 +58,8 @@ private SimpleSpawn(
  Collection<? extends ActionInput> outputs,
  @Nullable final Set<? extends ActionInput> mandatoryOutputs,
  @Nullable ResourceSet localResources,
- @Nullable LocalResourcesSupplier localResourcesSupplier) {
+ @Nullable LocalResourcesSupplier localResourcesSupplier,
+ PathMapper pathMapper) {
  this.owner = Preconditions.checkNotNull(owner);
  this.arguments = Preconditions.checkNotNull(arguments);
  this.environment = Preconditions.checkNotNull(environment);
@@ -81,6 +83,7 @@ private SimpleSpawn(
  this.localResourcesSupplier = localResourcesSupplier;
  this.localResourcesCached = null;
  }
+ this.pathMapper = pathMapper;
  }
 
  public SimpleSpawn(
@@ -107,7 +110,8 @@ public SimpleSpawn(
  outputs,
  mandatoryOutputs,
  localResources,
- /*localResourcesSupplier=*/ null);
+ /* localResourcesSupplier= */ null,
+ PathMapper.NOOP);
  }
 
  @SuppressWarnings("TooManyParameters")
@@ -134,8 +138,67 @@ public SimpleSpawn(
  tools,
  outputs,
  mandatoryOutputs,
- /*localResources=*/ null,
- localResourcesSupplier);
+ /* localResources= */ null,
+ localResourcesSupplier,
+ PathMapper.NOOP);
+ }
+
+ public SimpleSpawn(
+ ActionExecutionMetadata owner,
+ ImmutableList<String> arguments,
+ ImmutableMap<String, String> environment,
+ ImmutableMap<String, String> executionInfo,
+ RunfilesSupplier runfilesSupplier,
+ ImmutableMap<Artifact, ImmutableList<FilesetOutputSymlink>> filesetMappings,
+ NestedSet<? extends ActionInput> inputs,
+ NestedSet<? extends ActionInput> tools,
+ Collection<? extends ActionInput> outputs,
+ @Nullable Set<? extends ActionInput> mandatoryOutputs,
+ LocalResourcesSupplier localResourcesSupplier,
+ PathMapper pathMapper) {
+ this(
+ owner,
+ arguments,
+ environment,
+ executionInfo,
+ runfilesSupplier,
+ filesetMappings,
+ inputs,
+ tools,
+ outputs,
+ mandatoryOutputs,
+ /* localResources= */ null,
+ localResourcesSupplier,
+ pathMapper);
+ }
+
+ public SimpleSpawn(
+ ActionExecutionMetadata owner,
+ ImmutableList<String> arguments,
+ ImmutableMap<String, String> environment,
+ ImmutableMap<String, String> executionInfo,
+ RunfilesSupplier runfilesSupplier,
+ ImmutableMap<Artifact, ImmutableList<FilesetOutputSymlink>> filesetMappings,
+ NestedSet<? extends ActionInput> inputs,
+ NestedSet<? extends ActionInput> tools,
+ Collection<? extends ActionInput> outputs,
+ @Nullable Set<? extends ActionInput> mandatoryOutputs,
+ ResourceSet localResources,
+ PathMapper pathMapper) {
+ this(
+ owner,
+ arguments,
+ environment,
+ executionInfo,
+ runfilesSupplier,
+ filesetMappings,
+ inputs,
+ tools,
+ outputs,
+ mandatoryOutputs,
+ localResources,
+ /* localResourcesSupplier= */ null,
+ pathMapper);
  }
 
  public SimpleSpawn(
@@ -159,7 +222,8 @@ public SimpleSpawn(
  outputs,
  /* mandatoryOutputs= */ null,
  localResources,
- /* localResourcesSupplier= */ null);
+ /* localResourcesSupplier= */ null,
+ PathMapper.NOOP);
  }
 
  public SimpleSpawn(
@@ -265,6 +329,11 @@ public ResourceSet getLocalResources() throws ExecException {
  return localResourcesCached;
  }
 
+ @Override
+ public PathMapper getPathMapper() {
+ return pathMapper;
+ }
+
  @Override
  public String getMnemonic() {
  return owner.getMnemonic();

src/main/java/com/google/devtools/build/lib/rules/cpp/CcModule.java

@@ -27,6 +27,7 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.actions.PathMapper;
 import com.google.devtools.build.lib.analysis.AnalysisUtils;
 import com.google.devtools.build.lib.analysis.RuleContext;
 import com.google.devtools.build.lib.analysis.config.BuildConfigurationValue;
@@ -305,7 +306,7 @@ public Dict<String, String> getEnvironmentVariable(
  return Dict.immutableCopyOf(
  featureConfiguration
  .getFeatureConfiguration()
- .getEnvironmentVariables(actionName, variables));
+ .getEnvironmentVariables(actionName, variables, PathMapper.NOOP));
  }
 
  @Override