249 lines
8.2 KiB
Go
249 lines
8.2 KiB
Go
// Copyright 2019 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cc
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import (
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"encoding/json"
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"fmt"
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"path"
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"sort"
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"strings"
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"android/soong/android"
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)
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// This singleton collects cc modules' source and flags into to a json file.
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// It does so for generating CMakeLists.txt project files needed data when
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// either make, mm, mma, mmm or mmma is called.
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// The info file is generated in $OUT/module_bp_cc_depend.json.
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func init() {
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android.RegisterSingletonType("ccdeps_generator", ccDepsGeneratorSingleton)
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}
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func ccDepsGeneratorSingleton() android.Singleton {
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return &ccdepsGeneratorSingleton{}
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}
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type ccdepsGeneratorSingleton struct {
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}
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const (
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// Environment variables used to control the behavior of this singleton.
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envVariableCollectCCDeps = "SOONG_COLLECT_CC_DEPS"
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ccdepsJsonFileName = "module_bp_cc_deps.json"
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cClang = "clang"
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cppClang = "clang++"
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)
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type ccIdeInfo struct {
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Path []string `json:"path,omitempty"`
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Srcs []string `json:"srcs,omitempty"`
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Global_Common_Flags ccParameters `json:"global_common_flags,omitempty"`
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Local_Common_Flags ccParameters `json:"local_common_flags,omitempty"`
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Global_C_flags ccParameters `json:"global_c_flags,omitempty"`
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Local_C_flags ccParameters `json:"local_c_flags,omitempty"`
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Global_C_only_flags ccParameters `json:"global_c_only_flags,omitempty"`
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Local_C_only_flags ccParameters `json:"local_c_only_flags,omitempty"`
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Global_Cpp_flags ccParameters `json:"global_cpp_flags,omitempty"`
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Local_Cpp_flags ccParameters `json:"local_cpp_flags,omitempty"`
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System_include_flags ccParameters `json:"system_include_flags,omitempty"`
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Module_name string `json:"module_name,omitempty"`
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}
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type ccParameters struct {
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HeaderSearchPath []string `json:"header_search_path,omitempty"`
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SystemHeaderSearchPath []string `json:"system_search_path,omitempty"`
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FlagParameters []string `json:"flag,omitempty"`
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SysRoot string `json:"system_root,omitempty"`
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RelativeFilePathFlags map[string]string `json:"relative_file_path,omitempty"`
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}
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type ccMapIdeInfos map[string]ccIdeInfo
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type ccDeps struct {
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C_clang string `json:"clang,omitempty"`
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Cpp_clang string `json:"clang++,omitempty"`
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Modules ccMapIdeInfos `json:"modules,omitempty"`
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}
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func (c *ccdepsGeneratorSingleton) GenerateBuildActions(ctx android.SingletonContext) {
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if !ctx.Config().IsEnvTrue(envVariableCollectCCDeps) {
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return
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}
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moduleDeps := ccDeps{}
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moduleInfos := map[string]ccIdeInfo{}
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// Track which projects have already had CMakeLists.txt generated to keep the first
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// variant for each project.
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seenProjects := map[string]bool{}
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pathToCC, _ := evalVariable(ctx, "${config.ClangBin}/")
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moduleDeps.C_clang = fmt.Sprintf("%s%s", buildCMakePath(pathToCC), cClang)
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moduleDeps.Cpp_clang = fmt.Sprintf("%s%s", buildCMakePath(pathToCC), cppClang)
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ctx.VisitAllModules(func(module android.Module) {
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if ccModule, ok := module.(*Module); ok {
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if compiledModule, ok := ccModule.compiler.(CompiledInterface); ok {
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generateCLionProjectData(ctx, compiledModule, ccModule, seenProjects, moduleInfos)
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}
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}
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})
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moduleDeps.Modules = moduleInfos
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ccfpath := android.PathForOutput(ctx, ccdepsJsonFileName)
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err := createJsonFile(moduleDeps, ccfpath)
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if err != nil {
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ctx.Errorf(err.Error())
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}
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}
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func parseCompilerCCParameters(ctx android.SingletonContext, params []string) ccParameters {
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compilerParams := ccParameters{}
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cparams := []string{}
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for _, param := range params {
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param, _ = evalVariable(ctx, param)
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cparams = append(cparams, param)
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}
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// Soong does not guarantee that each flag will be in an individual string. e.g: The
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// input received could be:
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// params = {"-isystem", "path/to/system"}
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// or it could be
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// params = {"-isystem path/to/system"}
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// To normalize the input, we split all strings with the "space" character and consolidate
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// all tokens into a flattened parameters list
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cparams = normalizeParameters(cparams)
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for i := 0; i < len(cparams); i++ {
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param := cparams[i]
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if param == "" {
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continue
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}
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switch categorizeParameter(param) {
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case headerSearchPath:
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compilerParams.HeaderSearchPath =
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append(compilerParams.HeaderSearchPath, strings.TrimPrefix(param, "-I"))
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case systemHeaderSearchPath:
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if i < len(cparams)-1 {
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compilerParams.SystemHeaderSearchPath = append(compilerParams.SystemHeaderSearchPath, cparams[i+1])
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}
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i = i + 1
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case flag:
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c := cleanupParameter(param)
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compilerParams.FlagParameters = append(compilerParams.FlagParameters, c)
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case systemRoot:
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if i < len(cparams)-1 {
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compilerParams.SysRoot = cparams[i+1]
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}
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i = i + 1
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case relativeFilePathFlag:
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flagComponents := strings.Split(param, "=")
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if len(flagComponents) == 2 {
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if compilerParams.RelativeFilePathFlags == nil {
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compilerParams.RelativeFilePathFlags = map[string]string{}
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}
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compilerParams.RelativeFilePathFlags[flagComponents[0]] = flagComponents[1]
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}
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}
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}
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return compilerParams
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}
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func generateCLionProjectData(ctx android.SingletonContext, compiledModule CompiledInterface,
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ccModule *Module, seenProjects map[string]bool, moduleInfos map[string]ccIdeInfo) {
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srcs := compiledModule.Srcs()
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if len(srcs) == 0 {
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return
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}
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// Only keep the DeviceArch variant module.
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if ctx.DeviceConfig().DeviceArch() != ccModule.ModuleBase.Arch().ArchType.Name {
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return
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}
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clionProjectLocation := getCMakeListsForModule(ccModule, ctx)
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if seenProjects[clionProjectLocation] {
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return
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}
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seenProjects[clionProjectLocation] = true
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name := ccModule.ModuleBase.Name()
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dpInfo := moduleInfos[name]
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dpInfo.Path = append(dpInfo.Path, path.Dir(ctx.BlueprintFile(ccModule)))
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dpInfo.Srcs = append(dpInfo.Srcs, srcs.Strings()...)
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dpInfo.Path = android.FirstUniqueStrings(dpInfo.Path)
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dpInfo.Srcs = android.FirstUniqueStrings(dpInfo.Srcs)
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dpInfo.Global_Common_Flags = parseCompilerCCParameters(ctx, ccModule.flags.Global.CommonFlags)
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dpInfo.Local_Common_Flags = parseCompilerCCParameters(ctx, ccModule.flags.Local.CommonFlags)
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dpInfo.Global_C_flags = parseCompilerCCParameters(ctx, ccModule.flags.Global.CFlags)
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dpInfo.Local_C_flags = parseCompilerCCParameters(ctx, ccModule.flags.Local.CFlags)
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dpInfo.Global_C_only_flags = parseCompilerCCParameters(ctx, ccModule.flags.Global.ConlyFlags)
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dpInfo.Local_C_only_flags = parseCompilerCCParameters(ctx, ccModule.flags.Local.ConlyFlags)
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dpInfo.Global_Cpp_flags = parseCompilerCCParameters(ctx, ccModule.flags.Global.CppFlags)
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dpInfo.Local_Cpp_flags = parseCompilerCCParameters(ctx, ccModule.flags.Local.CppFlags)
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dpInfo.System_include_flags = parseCompilerCCParameters(ctx, ccModule.flags.SystemIncludeFlags)
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dpInfo.Module_name = name
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moduleInfos[name] = dpInfo
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}
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type Deal struct {
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Name string
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ideInfo ccIdeInfo
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}
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type Deals []Deal
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// Ensure it satisfies sort.Interface
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func (d Deals) Len() int { return len(d) }
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func (d Deals) Less(i, j int) bool { return d[i].Name < d[j].Name }
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func (d Deals) Swap(i, j int) { d[i], d[j] = d[j], d[i] }
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func sortMap(moduleInfos map[string]ccIdeInfo) map[string]ccIdeInfo {
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var deals Deals
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for k, v := range moduleInfos {
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deals = append(deals, Deal{k, v})
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}
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sort.Sort(deals)
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m := map[string]ccIdeInfo{}
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for _, d := range deals {
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m[d.Name] = d.ideInfo
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}
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return m
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}
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func createJsonFile(moduleDeps ccDeps, ccfpath android.WritablePath) error {
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buf, err := json.MarshalIndent(moduleDeps, "", "\t")
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if err != nil {
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return fmt.Errorf("JSON marshal of cc deps failed: %s", err)
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}
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err = android.WriteFileToOutputDir(ccfpath, buf, 0666)
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if err != nil {
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return fmt.Errorf("Writing cc deps to %s failed: %s", ccfpath.String(), err)
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}
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return nil
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}
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