872d579a22
Adds support for capturing rust_proc_macros as part of the host snapshot. Proc macros target the host and can be thought of as compiler plugins. Because of this, they don't have vendor image variants and can't be easily captured as part of the vendor snapshot. Instead we capture them as part of the host snapshot. This adds a rust_prebuilt_proc_macro module type. Bug: 204304380 Test: m HOST_FAKE_SNAPSHOT_ENABLE=true host-fake-snapshot dist Test: python3 development/vendor_snapshot/update.py --image=host --install-dir=vendor/vendor_name/ 31 --local out/dist Test: Checked Android.bp for rust_prebuilt_proc_macro modules. Change-Id: I4a8c4d9c41b7ca361b5b97d3f74973918c2a5fe3
101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
// Copyright 2019 The Android Open Source Project
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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 rust
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import (
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"android/soong/android"
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)
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func init() {
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android.RegisterModuleType("rust_proc_macro", ProcMacroFactory)
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}
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type ProcMacroCompilerProperties struct {
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}
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type procMacroDecorator struct {
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*baseCompiler
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*flagExporter
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Properties ProcMacroCompilerProperties
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}
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type procMacroInterface interface {
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ProcMacro() bool
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}
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var _ compiler = (*procMacroDecorator)(nil)
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var _ exportedFlagsProducer = (*procMacroDecorator)(nil)
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func ProcMacroFactory() android.Module {
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module, _ := NewProcMacro(android.HostSupportedNoCross)
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return module.Init()
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}
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func NewProcMacro(hod android.HostOrDeviceSupported) (*Module, *procMacroDecorator) {
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module := newModule(hod, android.MultilibFirst)
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procMacro := &procMacroDecorator{
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baseCompiler: NewBaseCompiler("lib", "lib64", InstallInSystem),
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flagExporter: NewFlagExporter(),
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}
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// Don't sanitize procMacros
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module.sanitize = nil
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module.compiler = procMacro
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return module, procMacro
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}
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func (procMacro *procMacroDecorator) compilerProps() []interface{} {
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return append(procMacro.baseCompiler.compilerProps(),
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&procMacro.Properties)
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}
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func (procMacro *procMacroDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags {
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flags = procMacro.baseCompiler.compilerFlags(ctx, flags)
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flags.RustFlags = append(flags.RustFlags, "--extern proc_macro")
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return flags
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}
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func (procMacro *procMacroDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) android.Path {
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fileName := procMacro.getStem(ctx) + ctx.toolchain().ProcMacroSuffix()
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outputFile := android.PathForModuleOut(ctx, fileName)
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srcPath, _ := srcPathFromModuleSrcs(ctx, procMacro.baseCompiler.Properties.Srcs)
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TransformSrctoProcMacro(ctx, srcPath, deps, flags, outputFile)
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procMacro.baseCompiler.unstrippedOutputFile = outputFile
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return outputFile
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}
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func (procMacro *procMacroDecorator) getStem(ctx ModuleContext) string {
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stem := procMacro.baseCompiler.getStemWithoutSuffix(ctx)
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validateLibraryStem(ctx, stem, procMacro.crateName())
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return stem + String(procMacro.baseCompiler.Properties.Suffix)
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}
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func (procMacro *procMacroDecorator) autoDep(ctx android.BottomUpMutatorContext) autoDep {
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return rlibAutoDep
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}
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func (procMacro *procMacroDecorator) ProcMacro() bool {
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return true
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}
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func (procMacro *procMacroDecorator) everInstallable() bool {
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// Proc_macros are never installed
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return false
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}
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