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// Copyright 2020 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 android
import (
"fmt"
"os"
"strings"
"github.com/google/blueprint"
)
// The Bazel Overlay singleton is responsible for generating the Ninja actions
// for calling the soong_build primary builder in the main build.ninja file.
func init() {
RegisterSingletonType("bazel_overlay", BazelOverlaySingleton)
}
func BazelOverlaySingleton() Singleton {
return &bazelOverlaySingleton{}
}
type bazelOverlaySingleton struct{}
func (c *bazelOverlaySingleton) GenerateBuildActions(ctx SingletonContext) {
// Create a build and rule statement, using the Bazel overlay's WORKSPACE
// file as the output file marker.
var deps Paths
moduleListFilePath := pathForBuildToolDep(ctx, ctx.Config().moduleListFile)
deps = append(deps, moduleListFilePath)
deps = append(deps, pathForBuildToolDep(ctx, ctx.Config().ProductVariablesFileName))
bazelOverlayDirectory := PathForOutput(ctx, "bazel_overlay")
bazelOverlayWorkspaceFile := bazelOverlayDirectory.Join(ctx, "WORKSPACE")
primaryBuilder := primaryBuilderPath(ctx)
bazelOverlay := ctx.Rule(pctx, "bazelOverlay",
blueprint.RuleParams{
Command: fmt.Sprintf(
"rm -rf ${outDir}/* && %s --bazel_overlay_dir ${outDir} %s && echo WORKSPACE: `cat %s` > ${outDir}/.overlay-depfile.d",
primaryBuilder.String(),
strings.Join(os.Args[1:], " "),
moduleListFilePath.String(), // Use the contents of Android.bp.list as the depfile.
),
CommandDeps: []string{primaryBuilder.String()},
Description: fmt.Sprintf(
"Creating the Bazel overlay workspace with %s at $outDir",
primaryBuilder.Base()),
Deps: blueprint.DepsGCC,
Depfile: "${outDir}/.overlay-depfile.d",
},
"outDir")
ctx.Build(pctx, BuildParams{
Rule: bazelOverlay,
Output: bazelOverlayWorkspaceFile,
Inputs: deps,
Args: map[string]string{
"outDir": bazelOverlayDirectory.String(),
},
})
// Add a phony target for building the bazel overlay
ctx.Phony("bazel_overlay", bazelOverlayWorkspaceFile)
}
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