Stubs variant is used when building for APEX
When a native module is built for an APEX and is depending on a native
library having stubs (i.e. stubs.versions property is set), the stubs
variant is used unless the dependent lib is directly included in the
same APEX with the depending module.
Example:
apex {
name: "myapex",
native_shared_libs: ["libX", "libY"],
}
cc_library {
name: "libX",
shared_libs: ["libY", "libZ"],
}
cc_library {
name: "libY",
stubs: { versions: ["1", "2"], },
}
cc_library {
name: "libZ",
stubs: { versions: ["1", "2"], },
}
In this case, libX is linking to the impl variant of libY (that provides
private APIs) while libY is linking to the version 2 stubs of libZ. This is
because libY is directly included in the same apex via
native_shared_libs property, but libZ isn't.
Bug: 112672359
Test: apex_test added
Change-Id: If9871b70dc74a06bd828dd4cd1aeebd2e68b837c
diff --git a/android/apex.go b/android/apex.go
index dae88ce..3a191cf 100644
--- a/android/apex.go
+++ b/android/apex.go
@@ -14,6 +14,8 @@
package android
+import "sync"
+
// ApexModule is the interface that a module type is expected to implement if
// the module has to be built differently depending on whether the module
// is destined for an apex or not (installed to one of the regular partitions).
@@ -94,6 +96,68 @@
return false
}
+// This structure maps a module name to the set of APEX bundle names that the module
+// should be built for. Examples:
+//
+// ...["foo"]["bar"] == true: module foo is directly depended on by APEX bar
+// ...["foo"]["bar"] == false: module foo is indirectly depended on by APEX bar
+// ...["foo"]["bar"] doesn't exist: foo is not built for APEX bar
+// ...["foo"] doesn't exist: foo is not built for any APEX
+func apexBundleNamesMap(config Config) map[string]map[string]bool {
+ return config.Once("apexBundleNames", func() interface{} {
+ return make(map[string]map[string]bool)
+ }).(map[string]map[string]bool)
+}
+
+var bundleNamesMapMutex sync.Mutex
+
+// Mark that a module named moduleName should be built for an apex named bundleName
+// directDep should be set to true if the module is a direct dependency of the apex.
+func BuildModuleForApexBundle(ctx BaseModuleContext, moduleName string, bundleName string, directDep bool) {
+ bundleNamesMapMutex.Lock()
+ defer bundleNamesMapMutex.Unlock()
+ bundleNames, ok := apexBundleNamesMap(ctx.Config())[moduleName]
+ if !ok {
+ bundleNames = make(map[string]bool)
+ apexBundleNamesMap(ctx.Config())[moduleName] = bundleNames
+ }
+ bundleNames[bundleName] = bundleNames[bundleName] || directDep
+}
+
+// Returns the list of apex bundle names that the module named moduleName
+// should be built for.
+func GetApexBundlesForModule(ctx BaseModuleContext, moduleName string) map[string]bool {
+ bundleNamesMapMutex.Lock()
+ defer bundleNamesMapMutex.Unlock()
+ return apexBundleNamesMap(ctx.Config())[moduleName]
+}
+
+// Tests if moduleName is directly depended on by bundleName (i.e. referenced in
+// native_shared_libs, etc.)
+func DirectlyInApex(config Config, bundleName string, moduleName string) bool {
+ bundleNamesMapMutex.Lock()
+ defer bundleNamesMapMutex.Unlock()
+ if bundleNames, ok := apexBundleNamesMap(config)[moduleName]; ok {
+ return bundleNames[bundleName]
+ }
+ return false
+}
+
+// Tests if moduleName is directly depended on by any APEX. If this returns true,
+// that means the module is part of the platform.
+func DirectlyInAnyApex(config Config, moduleName string) bool {
+ bundleNamesMapMutex.Lock()
+ defer bundleNamesMapMutex.Unlock()
+ if bundleNames, ok := apexBundleNamesMap(config)[moduleName]; ok {
+ for bn := range bundleNames {
+ if bundleNames[bn] {
+ return true
+ }
+ }
+ }
+ return false
+}
+
func InitApexModule(m ApexModule) {
base := m.apexModuleBase()
base.canHaveApexVariants = true