cc: export LOCAL_ACONFIG_FILES for printflags

Bug: 308625757
Test: manual
Change-Id: I211fe4736098bdca040c2a58b8b5e468c9d2e542

cc/androidmk.go

@@ -133,6 +133,8 @@ func (c *Module) AndroidMkEntries() []android.AndroidMkEntries {
 					entries.SetString("SOONG_SDK_VARIANT_MODULES",
 						"$(SOONG_SDK_VARIANT_MODULES) $(patsubst %.sdk,%,$(LOCAL_MODULE))")
 				}
+				// TODO(b/311155208): The container here should be system.
+				entries.SetOptionalPaths("LOCAL_ACONFIG_FILES", c.getTransitiveAconfigFiles(""))
 			},
 		},
 		ExtraFooters: []android.AndroidMkExtraFootersFunc{

cc/cc.go

@@ -2344,6 +2344,10 @@ func (c *Module) maybeUnhideFromMake() {
 	}
 }
 
+func (c *Module) getTransitiveAconfigFiles(container string) []android.Path {
+	return c.transitiveAconfigFiles[container].ToList()
+}
+
 // maybeInstall is called at the end of both GenerateAndroidBuildActions and
 // ProcessBazelQueryResponse to run the install hooks for installable modules,
 // like binaries and tests.