1 files changed, 98 insertions, 0 deletions
diff --git a/cc/vndk.go b/cc/vndk.go
new file mode 100644
index 00000000..fd1bdcb5
--- /dev/null
+++ b/cc/vndk.go
@@ -0,0 +1,98 @@
+// Copyright 2017 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cc
+
+import (
+	"android/soong/android"
+)
+
+type VndkProperties struct {
+	Vndk struct {
+		// declared as a VNDK or VNDK-SP module. The vendor variant
+		// will be installed in /system instead of /vendor partition.
+		//
+		// `vendor_available: true` must set to together for VNDK
+		// modules.
+		Enabled *bool
+
+		// declared as a VNDK-SP module, which is a subset of VNDK.
+		//
+		// `vndk: { enabled: true }` must set together.
+		//
+		// All these modules are allowed to link to VNDK-SP or LL-NDK
+		// modules only. Other dependency will cause link-type errors.
+		//
+		// If `support_system_process` is not set or set to false,
+		// the module is VNDK-core and can link to other VNDK-core,
+		// VNDK-SP or LL-NDK modules only.
+		Support_system_process *bool
+	}
+}
+
+type vndkdep struct {
+	Properties VndkProperties
+}
+
+func (vndk *vndkdep) props() []interface{} {
+	return []interface{}{&vndk.Properties}
+}
+
+func (vndk *vndkdep) begin(ctx BaseModuleContext) {}
+
+func (vndk *vndkdep) deps(ctx BaseModuleContext, deps Deps) Deps {
+	return deps
+}
+
+func (vndk *vndkdep) isVndk() bool {
+	return Bool(vndk.Properties.Vndk.Enabled)
+}
+
+func (vndk *vndkdep) isVndkSp() bool {
+	return Bool(vndk.Properties.Vndk.Support_system_process)
+}
+
+func (vndk *vndkdep) typeName() string {
+	if !vndk.isVndk() {
+		return "native:vendor"
+	}
+	if !vndk.isVndkSp() {
+		return "native:vendor:vndk"
+	}
+	return "native:vendor:vndksp"
+}
+
+func (vndk *vndkdep) vndkCheckLinkType(ctx android.ModuleContext, to *Module) {
+	if to.linker == nil {
+		return
+	}
+	if lib, ok := to.linker.(*libraryDecorator); !ok || !lib.shared() {
+		// Check only shared libraries.
+		// Other (static and LL-NDK) libraries are allowed to link.
+		return
+	}
+	if !to.Properties.UseVndk {
+		ctx.ModuleErrorf("(%s) should not link to %q which is not a vendor-available library",
+			vndk.typeName(), to.Name())
+		return
+	}
+	if to.vndkdep == nil {
+		return
+	}
+	if (vndk.isVndk() && !to.vndkdep.isVndk()) || (vndk.isVndkSp() && !to.vndkdep.isVndkSp()) {
+		ctx.ModuleErrorf("(%s) should not link to %q(%s)",
+			vndk.typeName(), to.Name(), to.vndkdep.typeName())
+		return
+	}
+}