Support cc_object modules in mixed builds
Test: With a handwritten conversion of crtbegin_so1, USE_BAZEL_ANALYSIS=1 m crtbegin_so1
Change-Id: I7c777d7f46b37aa1827cc04205e2014f9293bf35
diff --git a/cc/cc.go b/cc/cc.go
index 11d8718..2637c35 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -577,6 +577,17 @@
makeUninstallable(mod *Module)
}
+// bazelHandler is the interface for a helper object related to deferring to Bazel for
+// processing a module (during Bazel mixed builds). Individual module types should define
+// their own bazel handler if they support deferring to Bazel.
+type bazelHandler interface {
+ // Issue query to Bazel to retrieve information about Bazel's view of the current module.
+ // If Bazel returns this information, set module properties on the current module to reflect
+ // the returned information.
+ // Returns true if information was available from Bazel, false if bazel invocation still needs to occur.
+ generateBazelBuildActions(ctx android.ModuleContext, label string) bool
+}
+
type xref interface {
XrefCcFiles() android.Paths
}
@@ -779,9 +790,10 @@
// type-specific logic. These members may reference different objects or the same object.
// Functions of these decorators will be invoked to initialize and register type-specific
// build statements.
- compiler compiler
- linker linker
- installer installer
+ compiler compiler
+ linker linker
+ installer installer
+ bazelHandler bazelHandler
features []feature
stl *stl
@@ -1559,24 +1571,7 @@
return nameSuffix
}
-func (c *Module) GenerateAndroidBuildActions(actx android.ModuleContext) {
- // Handle the case of a test module split by `test_per_src` mutator.
- //
- // The `test_per_src` mutator adds an extra variation named "", depending on all the other
- // `test_per_src` variations of the test module. Set `outputFile` to an empty path for this
- // module and return early, as this module does not produce an output file per se.
- if c.IsTestPerSrcAllTestsVariation() {
- c.outputFile = android.OptionalPath{}
- return
- }
-
- apexInfo := actx.Provider(android.ApexInfoProvider).(android.ApexInfo)
- if !apexInfo.IsForPlatform() {
- c.hideApexVariantFromMake = true
- }
-
- c.makeLinkType = GetMakeLinkType(actx, c)
-
+func (c *Module) setSubnameProperty(actx android.ModuleContext) {
c.Properties.SubName = ""
if c.Target().NativeBridge == android.NativeBridgeEnabled {
@@ -1606,6 +1601,43 @@
c.Properties.SubName += "." + c.SdkVersion()
}
}
+}
+
+// Returns true if Bazel was successfully used for the analysis of this module.
+func (c *Module) maybeGenerateBazelActions(actx android.ModuleContext) bool {
+ bazelModuleLabel := c.GetBazelLabel()
+ bazelActionsUsed := false
+ if c.bazelHandler != nil && actx.Config().BazelContext.BazelEnabled() && len(bazelModuleLabel) > 0 {
+ bazelActionsUsed = c.bazelHandler.generateBazelBuildActions(actx, bazelModuleLabel)
+ }
+ return bazelActionsUsed
+}
+
+func (c *Module) GenerateAndroidBuildActions(actx android.ModuleContext) {
+ // TODO(cparsons): Any logic in this method occurring prior to querying Bazel should be
+ // requested from Bazel instead.
+
+ // Handle the case of a test module split by `test_per_src` mutator.
+ //
+ // The `test_per_src` mutator adds an extra variation named "", depending on all the other
+ // `test_per_src` variations of the test module. Set `outputFile` to an empty path for this
+ // module and return early, as this module does not produce an output file per se.
+ if c.IsTestPerSrcAllTestsVariation() {
+ c.outputFile = android.OptionalPath{}
+ return
+ }
+
+ c.setSubnameProperty(actx)
+ apexInfo := actx.Provider(android.ApexInfoProvider).(android.ApexInfo)
+ if !apexInfo.IsForPlatform() {
+ c.hideApexVariantFromMake = true
+ }
+
+ if c.maybeGenerateBazelActions(actx) {
+ return
+ }
+
+ c.makeLinkType = GetMakeLinkType(actx, c)
ctx := &moduleContext{
ModuleContext: actx,
diff --git a/cc/object.go b/cc/object.go
index 32347b8..126bd65 100644
--- a/cc/object.go
+++ b/cc/object.go
@@ -46,6 +46,26 @@
Properties ObjectLinkerProperties
}
+type objectBazelHandler struct {
+ bazelHandler
+
+ module *Module
+}
+
+func (handler *objectBazelHandler) generateBazelBuildActions(ctx android.ModuleContext, label string) bool {
+ bazelCtx := ctx.Config().BazelContext
+ objPaths, ok := bazelCtx.GetCcObjectFiles(label, ctx.Arch().ArchType)
+ if ok {
+ if len(objPaths) != 1 {
+ ctx.ModuleErrorf("expected exactly one object file for '%s', but got %s", label, objPaths)
+ return false
+ }
+
+ handler.module.outputFile = android.OptionalPathForPath(android.PathForBazelOut(ctx, objPaths[0]))
+ }
+ return ok
+}
+
type ObjectLinkerProperties struct {
// list of modules that should only provide headers for this module.
Header_libs []string `android:"arch_variant,variant_prepend"`
@@ -80,6 +100,7 @@
baseLinker: NewBaseLinker(module.sanitize),
}
module.compiler = NewBaseCompiler()
+ module.bazelHandler = &objectBazelHandler{module: module}
// Clang's address-significance tables are incompatible with ld -r.
module.compiler.appendCflags([]string{"-fno-addrsig"})