127 lines
3.7 KiB
Go
127 lines
3.7 KiB
Go
// Copyright 2016 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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"strings"
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"github.com/google/blueprint"
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"github.com/google/blueprint/pathtools"
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"android/soong/android"
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)
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func init() {
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pctx.HostBinToolVariable("protocCmd", "aprotoc")
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pctx.HostBinToolVariable("depFixCmd", "dep_fixer")
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}
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var (
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proto = pctx.AndroidStaticRule("protoc",
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blueprint.RuleParams{
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Command: "$protocCmd --cpp_out=$protoOutParams:$outDir --dependency_out=$out.d -I $protoBase $protoFlags $in && " +
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`$depFixCmd $out.d`,
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CommandDeps: []string{"$protocCmd", "$depFixCmd"},
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Depfile: "${out}.d",
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Deps: blueprint.DepsGCC,
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}, "protoFlags", "protoOutParams", "protoBase", "outDir")
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)
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// genProto creates a rule to convert a .proto file to generated .pb.cc and .pb.h files and returns
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// the paths to the generated files.
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func genProto(ctx android.ModuleContext, protoFile android.Path,
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protoFlags, protoOutParams string, root bool) (ccFile, headerFile android.WritablePath) {
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var protoBase string
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if root {
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protoBase = "."
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ccFile = android.GenPathWithExt(ctx, "proto", protoFile, "pb.cc")
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headerFile = android.GenPathWithExt(ctx, "proto", protoFile, "pb.h")
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} else {
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rel := protoFile.Rel()
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protoBase = strings.TrimSuffix(protoFile.String(), rel)
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ccFile = android.PathForModuleGen(ctx, "proto", pathtools.ReplaceExtension(rel, "pb.cc"))
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headerFile = android.PathForModuleGen(ctx, "proto", pathtools.ReplaceExtension(rel, "pb.h"))
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}
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ctx.Build(pctx, android.BuildParams{
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Rule: proto,
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Description: "protoc " + protoFile.Rel(),
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Output: ccFile,
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ImplicitOutput: headerFile,
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Input: protoFile,
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Args: map[string]string{
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"outDir": android.ProtoDir(ctx).String(),
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"protoFlags": protoFlags,
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"protoOutParams": protoOutParams,
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"protoBase": protoBase,
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},
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})
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return ccFile, headerFile
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}
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func protoDeps(ctx BaseModuleContext, deps Deps, p *android.ProtoProperties, static bool) Deps {
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var lib string
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switch String(p.Proto.Type) {
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case "full":
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if ctx.useSdk() {
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lib = "libprotobuf-cpp-full-ndk"
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static = true
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} else {
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lib = "libprotobuf-cpp-full"
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}
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case "lite", "":
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if ctx.useSdk() {
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lib = "libprotobuf-cpp-lite-ndk"
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static = true
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} else {
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lib = "libprotobuf-cpp-lite"
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}
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default:
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ctx.PropertyErrorf("proto.type", "unknown proto type %q",
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String(p.Proto.Type))
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}
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if static {
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deps.StaticLibs = append(deps.StaticLibs, lib)
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deps.ReexportStaticLibHeaders = append(deps.ReexportStaticLibHeaders, lib)
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} else {
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deps.SharedLibs = append(deps.SharedLibs, lib)
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deps.ReexportSharedLibHeaders = append(deps.ReexportSharedLibHeaders, lib)
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}
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return deps
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}
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func protoFlags(ctx ModuleContext, flags Flags, p *android.ProtoProperties) Flags {
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flags.CFlags = append(flags.CFlags, "-DGOOGLE_PROTOBUF_NO_RTTI")
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flags.ProtoRoot = android.ProtoCanonicalPathFromRoot(ctx, p)
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if flags.ProtoRoot {
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flags.GlobalFlags = append(flags.GlobalFlags, "-I"+android.ProtoSubDir(ctx).String())
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}
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flags.GlobalFlags = append(flags.GlobalFlags, "-I"+android.ProtoDir(ctx).String())
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flags.protoFlags = android.ProtoFlags(ctx, p)
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if String(p.Proto.Type) == "lite" {
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flags.protoOutParams = append(flags.protoOutParams, "lite")
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}
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return flags
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}
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