| // Copyright 2015 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 common |
| |
| import ( |
| "bytes" |
| "fmt" |
| "io" |
| "io/ioutil" |
| "os" |
| "path/filepath" |
| "sort" |
| |
| "android/soong" |
| |
| "github.com/google/blueprint" |
| ) |
| |
| func init() { |
| soong.RegisterSingletonType("androidmk", AndroidMkSingleton) |
| } |
| |
| type AndroidMkDataProvider interface { |
| AndroidMk() (AndroidMkData, error) |
| } |
| |
| type AndroidMkData struct { |
| Class string |
| SubName string |
| OutputFile OptionalPath |
| Disabled bool |
| |
| Custom func(w io.Writer, name, prefix string) error |
| |
| Extra []func(w io.Writer, outputFile Path) error |
| } |
| |
| func AndroidMkSingleton() blueprint.Singleton { |
| return &androidMkSingleton{} |
| } |
| |
| type androidMkSingleton struct{} |
| |
| func (c *androidMkSingleton) GenerateBuildActions(ctx blueprint.SingletonContext) { |
| if !ctx.Config().(Config).EmbeddedInMake() { |
| return |
| } |
| |
| ctx.SetNinjaBuildDir(pctx, filepath.Join(ctx.Config().(Config).buildDir, "..")) |
| |
| var androidMkModulesList []AndroidModule |
| |
| ctx.VisitAllModules(func(module blueprint.Module) { |
| if amod, ok := module.(AndroidModule); ok { |
| androidMkModulesList = append(androidMkModulesList, amod) |
| } |
| }) |
| |
| sort.Sort(AndroidModulesByName{androidMkModulesList, ctx}) |
| |
| transMk := PathForOutput(ctx, "Android.mk") |
| if ctx.Failed() { |
| return |
| } |
| |
| err := translateAndroidMk(ctx, transMk.String(), androidMkModulesList) |
| if err != nil { |
| ctx.Errorf(err.Error()) |
| } |
| |
| ctx.Build(pctx, blueprint.BuildParams{ |
| Rule: blueprint.Phony, |
| Outputs: []string{transMk.String()}, |
| Optional: true, |
| }) |
| } |
| |
| func translateAndroidMk(ctx blueprint.SingletonContext, mkFile string, mods []AndroidModule) error { |
| buf := &bytes.Buffer{} |
| |
| fmt.Fprintln(buf, "LOCAL_PATH := $(TOP)") |
| fmt.Fprintln(buf, "LOCAL_MODULE_MAKEFILE := $(lastword $(MAKEFILE_LIST))") |
| |
| for _, mod := range mods { |
| err := translateAndroidMkModule(ctx, buf, mod) |
| if err != nil { |
| os.Remove(mkFile) |
| return err |
| } |
| } |
| |
| // Don't write to the file if it hasn't changed |
| if _, err := os.Stat(mkFile); !os.IsNotExist(err) { |
| if data, err := ioutil.ReadFile(mkFile); err == nil { |
| matches := buf.Len() == len(data) |
| |
| if matches { |
| for i, value := range buf.Bytes() { |
| if value != data[i] { |
| matches = false |
| break |
| } |
| } |
| } |
| |
| if matches { |
| return nil |
| } |
| } |
| } |
| |
| return ioutil.WriteFile(mkFile, buf.Bytes(), 0666) |
| } |
| |
| func translateAndroidMkModule(ctx blueprint.SingletonContext, w io.Writer, mod blueprint.Module) error { |
| name := ctx.ModuleName(mod) |
| |
| provider, ok := mod.(AndroidMkDataProvider) |
| if !ok { |
| return nil |
| } |
| |
| amod := mod.(AndroidModule).base() |
| data, err := provider.AndroidMk() |
| if err != nil { |
| return err |
| } |
| |
| if !amod.Enabled() { |
| return err |
| } |
| |
| if data.SubName != "" { |
| name += "_" + data.SubName |
| } |
| |
| hostCross := false |
| if amod.Host() && amod.HostType() != CurrentHostType() { |
| hostCross = true |
| } |
| |
| if data.Custom != nil { |
| prefix := "" |
| if amod.Host() { |
| if hostCross { |
| prefix = "HOST_CROSS_" |
| } else { |
| prefix = "HOST_" |
| } |
| if amod.Arch().ArchType != ctx.Config().(Config).HostArches[amod.HostType()][0].ArchType { |
| prefix = "2ND_" + prefix |
| } |
| } else { |
| prefix = "TARGET_" |
| if amod.Arch().ArchType != ctx.Config().(Config).DeviceArches[0].ArchType { |
| prefix = "2ND_" + prefix |
| } |
| } |
| |
| return data.Custom(w, name, prefix) |
| } |
| |
| if data.Disabled { |
| return nil |
| } |
| |
| if !data.OutputFile.Valid() { |
| return err |
| } |
| |
| fmt.Fprintln(w, "\ninclude $(CLEAR_VARS)") |
| fmt.Fprintln(w, "LOCAL_MODULE :=", name) |
| fmt.Fprintln(w, "LOCAL_MODULE_CLASS :=", data.Class) |
| fmt.Fprintln(w, "LOCAL_MULTILIB :=", amod.commonProperties.Compile_multilib) |
| fmt.Fprintln(w, "LOCAL_SRC_FILES :=", data.OutputFile.String()) |
| |
| archStr := amod.Arch().ArchType.String() |
| if amod.Host() { |
| if hostCross { |
| fmt.Fprintln(w, "LOCAL_MODULE_HOST_CROSS_ARCH :=", archStr) |
| } else { |
| fmt.Fprintln(w, "LOCAL_MODULE_HOST_ARCH :=", archStr) |
| |
| // TODO: this isn't true for every module, only dependencies of ACP |
| fmt.Fprintln(w, "LOCAL_ACP_UNAVAILABLE := true") |
| } |
| fmt.Fprintln(w, "LOCAL_MODULE_HOST_OS :=", amod.HostType().String()) |
| fmt.Fprintln(w, "LOCAL_IS_HOST_MODULE := true") |
| } else { |
| fmt.Fprintln(w, "LOCAL_MODULE_TARGET_ARCH :=", archStr) |
| } |
| |
| for _, extra := range data.Extra { |
| err = extra(w, data.OutputFile.Path()) |
| if err != nil { |
| return err |
| } |
| } |
| |
| fmt.Fprintln(w, "include $(BUILD_PREBUILT)") |
| |
| return err |
| } |