| // Copyright 2014 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 bootstrap |
| |
| import ( |
| "runtime" |
| |
| "github.com/google/blueprint" |
| ) |
| |
| func bootstrapVariable(name, template string, value func() string) blueprint.Variable { |
| return pctx.VariableFunc(name, func(config interface{}) (string, error) { |
| if c, ok := config.(ConfigInterface); ok && c.GeneratingBootstrapper() { |
| return template, nil |
| } |
| return value(), nil |
| }) |
| } |
| |
| var ( |
| // These variables are the only configuration needed by the boostrap |
| // modules. For the first bootstrap stage, they are set to the |
| // variable name enclosed in "@@" so that their values can be easily |
| // replaced in the generated Ninja file. |
| srcDir = bootstrapVariable("srcDir", "@@SrcDir@@", func() string { |
| return SrcDir |
| }) |
| buildDir = bootstrapVariable("buildDir", "@@BuildDir@@", func() string { |
| return BuildDir |
| }) |
| goRoot = bootstrapVariable("goRoot", "@@GoRoot@@", func() string { |
| return runtime.GOROOT() |
| }) |
| compileCmd = bootstrapVariable("compileCmd", "@@GoCompile@@", func() string { |
| return "$goRoot/pkg/tool/" + runtime.GOOS + "_" + runtime.GOARCH + "/compile" |
| }) |
| linkCmd = bootstrapVariable("linkCmd", "@@GoLink@@", func() string { |
| return "$goRoot/pkg/tool/" + runtime.GOOS + "_" + runtime.GOARCH + "/link" |
| }) |
| bootstrapCmd = bootstrapVariable("bootstrapCmd", "@@Bootstrap@@", func() string { |
| panic("bootstrapCmd is only available for minibootstrap") |
| }) |
| ) |
| |
| type ConfigInterface interface { |
| // GeneratingBootstrapper should return true if this build invocation is |
| // creating a .minibootstrap/build.ninja file to be used in a build |
| // bootstrapping sequence. |
| GeneratingBootstrapper() bool |
| // GeneratingPrimaryBuilder should return true if this build invocation is |
| // creating a .bootstrap/build.ninja file to be used to build the |
| // primary builder |
| GeneratingPrimaryBuilder() bool |
| } |
| |
| type ConfigRemoveAbandonedFiles interface { |
| // RemoveAbandonedFiles should return true if files listed in the |
| // .ninja_log but not the output build.ninja file should be deleted. |
| RemoveAbandonedFiles() bool |
| } |
| |
| type ConfigBlueprintToolLocation interface { |
| // BlueprintToolLocation can return a path name to install blueprint tools |
| // designed for end users (bpfmt, bpmodify, and anything else using |
| // blueprint_go_binary). |
| BlueprintToolLocation() string |
| } |
| |
| type Stage int |
| |
| const ( |
| StageBootstrap Stage = iota |
| StagePrimary |
| StageMain |
| ) |
| |
| type Config struct { |
| stage Stage |
| |
| topLevelBlueprintsFile string |
| |
| runGoTests bool |
| } |