104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
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//
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// Copyright (C) 2021 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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//
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package rust
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import (
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"path"
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"android/soong/android"
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"android/soong/rust/config"
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)
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// This module is used to compile the rust toolchain libraries
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// When RUST_PREBUILTS_VERSION is set, the library will generated
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// from the given Rust version.
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func init() {
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android.RegisterModuleType("rust_toolchain_library",
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rustToolchainLibraryFactory)
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android.RegisterModuleType("rust_toolchain_library_rlib",
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rustToolchainLibraryRlibFactory)
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android.RegisterModuleType("rust_toolchain_library_dylib",
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rustToolchainLibraryDylibFactory)
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}
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type toolchainLibraryProperties struct {
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// path to the toolchain source, relative to the top of the toolchain source
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Toolchain_src *string `android:"arch_variant"`
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}
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type toolchainLibraryDecorator struct {
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*libraryDecorator
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Properties toolchainLibraryProperties
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}
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// rust_toolchain_library produces all rust variants.
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func rustToolchainLibraryFactory() android.Module {
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module, library := NewRustLibrary(android.HostAndDeviceSupported)
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library.BuildOnlyRust()
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return initToolchainLibrary(module, library)
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}
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// rust_toolchain_library_dylib produces a dylib.
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func rustToolchainLibraryDylibFactory() android.Module {
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module, library := NewRustLibrary(android.HostAndDeviceSupported)
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library.BuildOnlyDylib()
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return initToolchainLibrary(module, library)
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}
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// rust_toolchain_library_rlib produces an rlib.
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func rustToolchainLibraryRlibFactory() android.Module {
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module, library := NewRustLibrary(android.HostAndDeviceSupported)
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library.BuildOnlyRlib()
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return initToolchainLibrary(module, library)
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}
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func initToolchainLibrary(module *Module, library *libraryDecorator) android.Module {
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toolchainLibrary := &toolchainLibraryDecorator{
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libraryDecorator: library,
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}
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module.compiler = toolchainLibrary
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module.AddProperties(&toolchainLibrary.Properties)
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android.AddLoadHook(module, rustSetToolchainSource)
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return module.Init()
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}
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func rustSetToolchainSource(ctx android.LoadHookContext) {
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if toolchainLib, ok := ctx.Module().(*Module).compiler.(*toolchainLibraryDecorator); ok {
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prefix := "linux-x86/" + GetRustPrebuiltVersion(ctx)
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newSrcs := []string{path.Join(prefix, android.String(toolchainLib.Properties.Toolchain_src))}
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type props struct {
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Srcs []string
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}
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p := &props{}
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p.Srcs = newSrcs
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ctx.AppendProperties(p)
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} else {
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ctx.ModuleErrorf("Called rustSetToolchainSource on a non-Rust Module.")
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}
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}
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// GetRustPrebuiltVersion returns the RUST_PREBUILTS_VERSION env var, or the default version if it is not defined.
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func GetRustPrebuiltVersion(ctx android.LoadHookContext) string {
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return ctx.AConfig().GetenvWithDefault("RUST_PREBUILTS_VERSION", config.RustDefaultVersion)
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}
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