1// Copyright 2020 Google Inc. All rights reserved. 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15package cc 16 17import ( 18 "android/soong/android" 19 "android/soong/genrule" 20) 21 22// sdkMutator sets a creates a platform and an SDK variant for modules 23// that set sdk_version, and ignores sdk_version for the platform 24// variant. The SDK variant will be used for embedding in APKs 25// that may be installed on older platforms. Apexes use their own 26// variants that enforce backwards compatibility. 27func sdkMutator(ctx android.BottomUpMutatorContext) { 28 if ctx.Os() != android.Android { 29 return 30 } 31 32 switch m := ctx.Module().(type) { 33 case LinkableInterface: 34 if m.AlwaysSdk() { 35 if !m.UseSdk() { 36 ctx.ModuleErrorf("UseSdk() must return true when AlwaysSdk is set, did the factory forget to set Sdk_version?") 37 } 38 ctx.CreateVariations("sdk") 39 } else if m.UseSdk() { 40 modules := ctx.CreateVariations("", "sdk") 41 modules[0].(*Module).Properties.Sdk_version = nil 42 modules[1].(*Module).Properties.IsSdkVariant = true 43 44 if ctx.Config().UnbundledBuild() { 45 modules[0].(*Module).Properties.HideFromMake = true 46 } else { 47 modules[1].(*Module).Properties.SdkAndPlatformVariantVisibleToMake = true 48 modules[1].(*Module).Properties.PreventInstall = true 49 } 50 ctx.AliasVariation("") 51 } else { 52 ctx.CreateVariations("") 53 ctx.AliasVariation("") 54 } 55 case *genrule.Module: 56 if p, ok := m.Extra.(*GenruleExtraProperties); ok { 57 if String(p.Sdk_version) != "" { 58 ctx.CreateVariations("", "sdk") 59 } else { 60 ctx.CreateVariations("") 61 } 62 ctx.AliasVariation("") 63 } 64 } 65} 66