Stubs dependency is not installed

When the stubs variant of a library is dependend by a platform component
and the library is included in one or more APEX, the library is not
installed to the platform, because it is provided by APEX.

Bug: 120266448
Test: m
Test: add stubs: { versions: ["1"], }, to libnetd_resolv
then build netd. libnetd_resolv.so does not exist under /system.

Change-Id: I09b78e38df285033ef6e9c85f7ea4b0274e85070
diff --git a/cc/androidmk.go b/cc/androidmk.go
index f5e04bb..1f5a8ad 100644
--- a/cc/androidmk.go
+++ b/cc/androidmk.go
@@ -76,6 +76,9 @@
 				if len(c.Properties.AndroidMkWholeStaticLibs) > 0 {
 					fmt.Fprintln(w, "LOCAL_WHOLE_STATIC_LIBRARIES := "+strings.Join(c.Properties.AndroidMkWholeStaticLibs, " "))
 				}
+				if len(c.Properties.ApexesProvidingSharedLibs) > 0 {
+					fmt.Fprintln(w, "LOCAL_REQUIRED_MODULES := "+strings.Join(c.Properties.ApexesProvidingSharedLibs, " "))
+				}
 				fmt.Fprintln(w, "LOCAL_SOONG_LINK_TYPE :=", c.getMakeLinkType())
 				if c.useVndk() {
 					fmt.Fprintln(w, "LOCAL_USE_VNDK := true")
diff --git a/cc/cc.go b/cc/cc.go
index b8cbf26..f3aa7e8 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -183,12 +183,13 @@
 	// Minimum sdk version supported when compiling against the ndk
 	Sdk_version *string
 
-	AndroidMkSharedLibs      []string `blueprint:"mutated"`
-	AndroidMkStaticLibs      []string `blueprint:"mutated"`
-	AndroidMkRuntimeLibs     []string `blueprint:"mutated"`
-	AndroidMkWholeStaticLibs []string `blueprint:"mutated"`
-	HideFromMake             bool     `blueprint:"mutated"`
-	PreventInstall           bool     `blueprint:"mutated"`
+	AndroidMkSharedLibs       []string `blueprint:"mutated"`
+	AndroidMkStaticLibs       []string `blueprint:"mutated"`
+	AndroidMkRuntimeLibs      []string `blueprint:"mutated"`
+	AndroidMkWholeStaticLibs  []string `blueprint:"mutated"`
+	HideFromMake              bool     `blueprint:"mutated"`
+	PreventInstall            bool     `blueprint:"mutated"`
+	ApexesProvidingSharedLibs []string `blueprint:"mutated"`
 
 	UseVndk bool `blueprint:"mutated"`
 
@@ -1579,6 +1580,22 @@
 		// Export the shared libs to Make.
 		switch depTag {
 		case sharedDepTag, sharedExportDepTag, lateSharedDepTag:
+			// Dependency to the stubs lib which is already included in an APEX
+			// is not added to the androidmk dependency
+			if dependentLibrary, ok := ccDep.linker.(*libraryDecorator); ok {
+				depNameWithTarget := depName + "-" + ccDep.Target().String()
+				if dependentLibrary.buildStubs() && android.InAnyApex(ctx.Config(), depNameWithTarget) {
+					// Also add the dependency to the APEX(es) providing the library so that
+					// m <module> can trigger building the APEXes as well.
+					apexNames := android.GetApexBundlesForModule(ctx, depNameWithTarget)
+					for an := range apexNames {
+						c.Properties.ApexesProvidingSharedLibs = append(
+							c.Properties.ApexesProvidingSharedLibs, an)
+					}
+					break
+				}
+			}
+
 			// Note: the order of libs in this list is not important because
 			// they merely serve as Make dependencies and do not affect this lib itself.
 			c.Properties.AndroidMkSharedLibs = append(