Files
build_soong/rust/proc_macro.go
Matthew Maurer bb3add1104 rust: Suppress default sysroot unconditionally
With proper prebuilt modules, we can avoid any rustc implicit sysroot
searching.

Asd a bonus, this should make rust-project.json generation correctly
grab otherwise implicit dependencies.

Prebuilt rlibs may include several dependency rlibs. Without a
link_dirs attribute, every dependency (even if unexported) would need a
separate module.

Previously we were casing out on exact structs, which might be OK when
libraryDecorator and procMacroDecorator were the only possibilities, but
repeating the logic for three types is too much. Using an interface
makes this logic scale better.

Bug: 159591910
Test: cd external/rust; mma; m crosvm.experimental
Change-Id: Ia1124e09f48cd05e39f094bbcb988622ebd2272f
2020-07-01 11:27:12 -07:00

86 lines
2.4 KiB
Go

// Copyright 2019 The Android Open Source Project
//
// 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 rust
import (
"android/soong/android"
)
func init() {
android.RegisterModuleType("rust_proc_macro", ProcMacroFactory)
}
type ProcMacroCompilerProperties struct {
}
type procMacroDecorator struct {
*baseCompiler
*flagExporter
Properties ProcMacroCompilerProperties
}
type procMacroInterface interface {
}
var _ compiler = (*procMacroDecorator)(nil)
var _ exportedFlagsProducer = (*procMacroDecorator)(nil)
func ProcMacroFactory() android.Module {
module, _ := NewProcMacro(android.HostSupportedNoCross)
return module.Init()
}
func NewProcMacro(hod android.HostOrDeviceSupported) (*Module, *procMacroDecorator) {
module := newModule(hod, android.MultilibFirst)
procMacro := &procMacroDecorator{
baseCompiler: NewBaseCompiler("lib", "lib64", InstallInSystem),
flagExporter: NewFlagExporter(),
}
module.compiler = procMacro
return module, procMacro
}
func (procMacro *procMacroDecorator) compilerProps() []interface{} {
return append(procMacro.baseCompiler.compilerProps(),
&procMacro.Properties)
}
func (procMacro *procMacroDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) android.Path {
fileName := procMacro.getStem(ctx) + ctx.toolchain().ProcMacroSuffix()
outputFile := android.PathForModuleOut(ctx, fileName)
srcPath := srcPathFromModuleSrcs(ctx, procMacro.baseCompiler.Properties.Srcs)
procMacro.unstrippedOutputFile = outputFile
TransformSrctoProcMacro(ctx, srcPath, deps, flags, outputFile, deps.linkDirs)
return outputFile
}
func (procMacro *procMacroDecorator) getStem(ctx ModuleContext) string {
stem := procMacro.baseCompiler.getStemWithoutSuffix(ctx)
validateLibraryStem(ctx, stem, procMacro.crateName())
return stem + String(procMacro.baseCompiler.Properties.Suffix)
}
func (procMacro *procMacroDecorator) autoDep() autoDep {
return rlibAutoDep
}