547bfdd1d1
This CL removes the custom_inner_attributes and mixed_integer_ops features from the allow-list. This also allows us to remove the `-A stable-features` flag. Bug: 267698452 Test: m rust Change-Id: I4770c2e9477337f112732c354bf477a99d11a467
458 lines
16 KiB
Go
458 lines
16 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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"path/filepath"
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"strings"
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"github.com/google/blueprint"
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"android/soong/android"
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"android/soong/rust/config"
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)
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var (
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_ = pctx.SourcePathVariable("rustcCmd", "${config.RustBin}/rustc")
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_ = pctx.SourcePathVariable("mkcraterspCmd", "build/soong/scripts/mkcratersp.py")
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rustc = pctx.AndroidStaticRule("rustc",
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blueprint.RuleParams{
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Command: "$envVars $rustcCmd " +
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"-C linker=$mkcraterspCmd " +
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"--emit link -o $out --emit dep-info=$out.d.raw $in ${libFlags} $rustcFlags" +
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" && grep \"^$out:\" $out.d.raw > $out.d",
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CommandDeps: []string{"$rustcCmd", "$mkcraterspCmd"},
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// Rustc deps-info writes out make compatible dep files: https://github.com/rust-lang/rust/issues/7633
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// Rustc emits unneeded dependency lines for the .d and input .rs files.
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// Those extra lines cause ninja warning:
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// "warning: depfile has multiple output paths"
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// For ninja, we keep/grep only the dependency rule for the rust $out file.
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Deps: blueprint.DepsGCC,
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Depfile: "$out.d",
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},
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"rustcFlags", "libFlags", "envVars")
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rustLink = pctx.AndroidStaticRule("rustLink",
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blueprint.RuleParams{
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Command: "${config.RustLinker} -o $out ${crtBegin} ${config.RustLinkerArgs} @$in ${linkFlags} ${crtEnd}",
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},
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"linkFlags", "crtBegin", "crtEnd")
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_ = pctx.SourcePathVariable("rustdocCmd", "${config.RustBin}/rustdoc")
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rustdoc = pctx.AndroidStaticRule("rustdoc",
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blueprint.RuleParams{
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Command: "$envVars $rustdocCmd $rustdocFlags $in -o $outDir && " +
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"touch $out",
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CommandDeps: []string{"$rustdocCmd"},
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},
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"rustdocFlags", "outDir", "envVars")
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_ = pctx.SourcePathVariable("clippyCmd", "${config.RustBin}/clippy-driver")
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clippyDriver = pctx.AndroidStaticRule("clippy",
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blueprint.RuleParams{
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Command: "$envVars $clippyCmd " +
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// Because clippy-driver uses rustc as backend, we need to have some output even during the linting.
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// Use the metadata output as it has the smallest footprint.
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"--emit metadata -o $out --emit dep-info=$out.d.raw $in ${libFlags} " +
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"$rustcFlags $clippyFlags" +
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" && grep \"^$out:\" $out.d.raw > $out.d",
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CommandDeps: []string{"$clippyCmd"},
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Deps: blueprint.DepsGCC,
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Depfile: "$out.d",
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},
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"rustcFlags", "libFlags", "clippyFlags", "envVars")
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zip = pctx.AndroidStaticRule("zip",
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blueprint.RuleParams{
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Command: "cat $out.rsp | tr ' ' '\\n' | tr -d \\' | sort -u > ${out}.tmp && ${SoongZipCmd} -o ${out} -C $$OUT_DIR -l ${out}.tmp",
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CommandDeps: []string{"${SoongZipCmd}"},
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Rspfile: "$out.rsp",
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RspfileContent: "$in",
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})
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cp = pctx.AndroidStaticRule("cp",
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blueprint.RuleParams{
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Command: "cp `cat $outDir.rsp` $outDir",
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Rspfile: "${outDir}.rsp",
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RspfileContent: "$in",
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},
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"outDir")
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// Cross-referencing:
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_ = pctx.SourcePathVariable("rustExtractor",
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"prebuilts/build-tools/${config.HostPrebuiltTag}/bin/rust_extractor")
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_ = pctx.VariableFunc("kytheCorpus",
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func(ctx android.PackageVarContext) string { return ctx.Config().XrefCorpusName() })
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_ = pctx.VariableFunc("kytheCuEncoding",
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func(ctx android.PackageVarContext) string { return ctx.Config().XrefCuEncoding() })
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_ = pctx.SourcePathVariable("kytheVnames", "build/soong/vnames.json")
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kytheExtract = pctx.AndroidStaticRule("kythe",
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blueprint.RuleParams{
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Command: `KYTHE_CORPUS=${kytheCorpus} ` +
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`KYTHE_OUTPUT_FILE=$out ` +
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`KYTHE_VNAMES=$kytheVnames ` +
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`KYTHE_KZIP_ENCODING=${kytheCuEncoding} ` +
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`KYTHE_CANONICALIZE_VNAME_PATHS=prefer-relative ` +
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`$rustExtractor $envVars ` +
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`$rustcCmd ` +
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`-C linker=true ` +
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`$in ${libFlags} $rustcFlags`,
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CommandDeps: []string{"$rustExtractor", "$kytheVnames"},
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Rspfile: "${out}.rsp",
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RspfileContent: "$in",
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},
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"rustcFlags", "libFlags", "envVars")
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)
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type buildOutput struct {
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outputFile android.Path
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kytheFile android.Path
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}
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func init() {
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pctx.HostBinToolVariable("SoongZipCmd", "soong_zip")
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}
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func TransformSrcToBinary(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
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outputFile android.WritablePath) buildOutput {
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flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
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return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "bin")
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}
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func TransformSrctoRlib(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
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outputFile android.WritablePath) buildOutput {
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return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "rlib")
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}
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func TransformSrctoDylib(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
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outputFile android.WritablePath) buildOutput {
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flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
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return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "dylib")
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}
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func TransformSrctoStatic(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
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outputFile android.WritablePath) buildOutput {
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flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
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return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "staticlib")
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}
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func TransformSrctoShared(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
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outputFile android.WritablePath) buildOutput {
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flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
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return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "cdylib")
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}
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func TransformSrctoProcMacro(ctx ModuleContext, mainSrc android.Path, deps PathDeps,
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flags Flags, outputFile android.WritablePath) buildOutput {
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return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "proc-macro")
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}
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func rustLibsToPaths(libs RustLibraries) android.Paths {
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var paths android.Paths
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for _, lib := range libs {
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paths = append(paths, lib.Path)
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}
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return paths
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}
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func makeLibFlags(deps PathDeps) []string {
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var libFlags []string
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// Collect library/crate flags
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for _, lib := range deps.RLibs {
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libFlags = append(libFlags, "--extern "+lib.CrateName+"="+lib.Path.String())
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}
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for _, lib := range deps.DyLibs {
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libFlags = append(libFlags, "--extern "+lib.CrateName+"="+lib.Path.String())
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}
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for _, proc_macro := range deps.ProcMacros {
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libFlags = append(libFlags, "--extern "+proc_macro.CrateName+"="+proc_macro.Path.String())
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}
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for _, path := range deps.linkDirs {
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libFlags = append(libFlags, "-L "+path)
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}
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return libFlags
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}
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func rustEnvVars(ctx ModuleContext, deps PathDeps) []string {
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var envVars []string
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// libstd requires a specific environment variable to be set. This is
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// not officially documented and may be removed in the future. See
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// https://github.com/rust-lang/rust/blob/master/library/std/src/env.rs#L866.
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if ctx.RustModule().CrateName() == "std" {
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envVars = append(envVars, "STD_ENV_ARCH="+config.StdEnvArch[ctx.RustModule().Arch().ArchType])
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}
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if len(deps.SrcDeps) > 0 {
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moduleGenDir := ctx.RustModule().compiler.CargoOutDir()
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// We must calculate an absolute path for OUT_DIR since Rust's include! macro (which normally consumes this)
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// assumes that paths are relative to the source file.
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var outDirPrefix string
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if !filepath.IsAbs(moduleGenDir.String()) {
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// If OUT_DIR is not absolute, we use $$PWD to generate an absolute path (os.Getwd() returns '/')
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outDirPrefix = "$$PWD/"
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} else {
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// If OUT_DIR is absolute, then moduleGenDir will be an absolute path, so we don't need to set this to anything.
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outDirPrefix = ""
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}
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envVars = append(envVars, "OUT_DIR="+filepath.Join(outDirPrefix, moduleGenDir.String()))
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} else {
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// TODO(pcc): Change this to "OUT_DIR=" after fixing crates to not rely on this value.
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envVars = append(envVars, "OUT_DIR=out")
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}
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return envVars
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}
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func transformSrctoCrate(ctx ModuleContext, main android.Path, deps PathDeps, flags Flags,
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outputFile android.WritablePath, crateType string) buildOutput {
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var inputs android.Paths
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var implicits, linkImplicits, linkOrderOnly android.Paths
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var output buildOutput
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var rustcFlags, linkFlags []string
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output.outputFile = outputFile
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crateName := ctx.RustModule().CrateName()
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targetTriple := ctx.toolchain().RustTriple()
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envVars := rustEnvVars(ctx, deps)
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inputs = append(inputs, main)
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// Collect rustc flags
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rustcFlags = append(rustcFlags, flags.GlobalRustFlags...)
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rustcFlags = append(rustcFlags, flags.RustFlags...)
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rustcFlags = append(rustcFlags, "--crate-type="+crateType)
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if crateName != "" {
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rustcFlags = append(rustcFlags, "--crate-name="+crateName)
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}
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if targetTriple != "" {
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rustcFlags = append(rustcFlags, "--target="+targetTriple)
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linkFlags = append(linkFlags, "-target "+targetTriple)
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}
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// Suppress an implicit sysroot
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rustcFlags = append(rustcFlags, "--sysroot=/dev/null")
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// Enable incremental compilation if requested by user
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if ctx.Config().IsEnvTrue("SOONG_RUSTC_INCREMENTAL") {
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incrementalPath := android.PathForOutput(ctx, "rustc").String()
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rustcFlags = append(rustcFlags, "-Cincremental="+incrementalPath)
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}
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// Disallow experimental features
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modulePath := android.PathForModuleSrc(ctx).String()
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if !(android.IsThirdPartyPath(modulePath) || strings.HasPrefix(modulePath, "prebuilts")) {
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rustcFlags = append(rustcFlags, "-Zallow-features=\"\"")
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}
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// Collect linker flags
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linkFlags = append(linkFlags, flags.GlobalLinkFlags...)
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linkFlags = append(linkFlags, flags.LinkFlags...)
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// Check if this module needs to use the bootstrap linker
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if ctx.RustModule().Bootstrap() && !ctx.RustModule().InRecovery() && !ctx.RustModule().InRamdisk() && !ctx.RustModule().InVendorRamdisk() {
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dynamicLinker := "-Wl,-dynamic-linker,/system/bin/bootstrap/linker"
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if ctx.toolchain().Is64Bit() {
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dynamicLinker += "64"
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}
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linkFlags = append(linkFlags, dynamicLinker)
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}
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libFlags := makeLibFlags(deps)
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// Collect dependencies
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implicits = append(implicits, rustLibsToPaths(deps.RLibs)...)
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implicits = append(implicits, rustLibsToPaths(deps.DyLibs)...)
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implicits = append(implicits, rustLibsToPaths(deps.ProcMacros)...)
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implicits = append(implicits, deps.AfdoProfiles...)
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implicits = append(implicits, deps.srcProviderFiles...)
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implicits = append(implicits, deps.WholeStaticLibs...)
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linkImplicits = append(linkImplicits, deps.LibDeps...)
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linkImplicits = append(linkImplicits, deps.CrtBegin...)
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linkImplicits = append(linkImplicits, deps.CrtEnd...)
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linkOrderOnly = append(linkOrderOnly, deps.linkObjects...)
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if len(deps.SrcDeps) > 0 {
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moduleGenDir := ctx.RustModule().compiler.CargoOutDir()
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var outputs android.WritablePaths
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for _, genSrc := range deps.SrcDeps {
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if android.SuffixInList(outputs.Strings(), genSubDir+genSrc.Base()) {
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ctx.PropertyErrorf("srcs",
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"multiple source providers generate the same filename output: "+genSrc.Base())
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}
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outputs = append(outputs, android.PathForModuleOut(ctx, genSubDir+genSrc.Base()))
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}
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ctx.Build(pctx, android.BuildParams{
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Rule: cp,
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Description: "cp " + moduleGenDir.Path().Rel(),
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Outputs: outputs,
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Inputs: deps.SrcDeps,
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Args: map[string]string{
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"outDir": moduleGenDir.String(),
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},
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})
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implicits = append(implicits, outputs.Paths()...)
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}
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envVars = append(envVars, "ANDROID_RUST_VERSION="+config.GetRustVersion(ctx))
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if ctx.RustModule().compiler.CargoEnvCompat() {
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if _, ok := ctx.RustModule().compiler.(*binaryDecorator); ok {
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envVars = append(envVars, "CARGO_BIN_NAME="+strings.TrimSuffix(outputFile.Base(), outputFile.Ext()))
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}
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envVars = append(envVars, "CARGO_CRATE_NAME="+ctx.RustModule().CrateName())
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pkgVersion := ctx.RustModule().compiler.CargoPkgVersion()
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if pkgVersion != "" {
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envVars = append(envVars, "CARGO_PKG_VERSION="+pkgVersion)
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}
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}
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envVars = append(envVars, "AR=${cc_config.ClangBin}/llvm-ar")
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if flags.Clippy {
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clippyFile := android.PathForModuleOut(ctx, outputFile.Base()+".clippy")
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ctx.Build(pctx, android.BuildParams{
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Rule: clippyDriver,
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Description: "clippy " + main.Rel(),
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Output: clippyFile,
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Inputs: inputs,
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Implicits: implicits,
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Args: map[string]string{
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"rustcFlags": strings.Join(rustcFlags, " "),
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"libFlags": strings.Join(libFlags, " "),
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"clippyFlags": strings.Join(flags.ClippyFlags, " "),
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"envVars": strings.Join(envVars, " "),
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},
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})
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// Declare the clippy build as an implicit dependency of the original crate.
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implicits = append(implicits, clippyFile)
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}
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rustcOutputFile := outputFile
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usesLinker := crateType == "bin" || crateType == "dylib" || crateType == "cdylib" || crateType == "proc-macro"
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if usesLinker {
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rustcOutputFile = android.PathForModuleOut(ctx, outputFile.Base()+".rsp")
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}
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ctx.Build(pctx, android.BuildParams{
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Rule: rustc,
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Description: "rustc " + main.Rel(),
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Output: rustcOutputFile,
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Inputs: inputs,
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Implicits: implicits,
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Args: map[string]string{
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"rustcFlags": strings.Join(rustcFlags, " "),
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"libFlags": strings.Join(libFlags, " "),
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"envVars": strings.Join(envVars, " "),
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},
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})
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if usesLinker {
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ctx.Build(pctx, android.BuildParams{
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Rule: rustLink,
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Description: "rustLink " + main.Rel(),
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Output: outputFile,
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Inputs: android.Paths{rustcOutputFile},
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Implicits: linkImplicits,
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OrderOnly: linkOrderOnly,
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Args: map[string]string{
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"linkFlags": strings.Join(linkFlags, " "),
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"crtBegin": strings.Join(deps.CrtBegin.Strings(), " "),
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"crtEnd": strings.Join(deps.CrtEnd.Strings(), " "),
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},
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})
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}
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if flags.EmitXrefs {
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kytheFile := android.PathForModuleOut(ctx, outputFile.Base()+".kzip")
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ctx.Build(pctx, android.BuildParams{
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Rule: kytheExtract,
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Description: "Xref Rust extractor " + main.Rel(),
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Output: kytheFile,
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Inputs: inputs,
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Implicits: implicits,
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Args: map[string]string{
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"rustcFlags": strings.Join(rustcFlags, " "),
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"libFlags": strings.Join(libFlags, " "),
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"envVars": strings.Join(envVars, " "),
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},
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})
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output.kytheFile = kytheFile
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}
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return output
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}
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func Rustdoc(ctx ModuleContext, main android.Path, deps PathDeps,
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flags Flags) android.ModuleOutPath {
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rustdocFlags := append([]string{}, flags.RustdocFlags...)
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rustdocFlags = append(rustdocFlags, "--sysroot=/dev/null")
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// Build an index for all our crates. -Z unstable options is required to use
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// this flag.
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rustdocFlags = append(rustdocFlags, "-Z", "unstable-options", "--enable-index-page")
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targetTriple := ctx.toolchain().RustTriple()
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// Collect rustc flags
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if targetTriple != "" {
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rustdocFlags = append(rustdocFlags, "--target="+targetTriple)
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}
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crateName := ctx.RustModule().CrateName()
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rustdocFlags = append(rustdocFlags, "--crate-name "+crateName)
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rustdocFlags = append(rustdocFlags, makeLibFlags(deps)...)
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docTimestampFile := android.PathForModuleOut(ctx, "rustdoc.timestamp")
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// Silence warnings about renamed lints for third-party crates
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modulePath := android.PathForModuleSrc(ctx).String()
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if android.IsThirdPartyPath(modulePath) {
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rustdocFlags = append(rustdocFlags, " -A warnings")
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}
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// Yes, the same out directory is used simultaneously by all rustdoc builds.
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// This is what cargo does. The docs for individual crates get generated to
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// a subdirectory named for the crate, and rustdoc synchronizes writes to
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// shared pieces like the index and search data itself.
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// https://github.com/rust-lang/rust/blob/master/src/librustdoc/html/render/write_shared.rs#L144-L146
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docDir := android.PathForOutput(ctx, "rustdoc")
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ctx.Build(pctx, android.BuildParams{
|
|
Rule: rustdoc,
|
|
Description: "rustdoc " + main.Rel(),
|
|
Output: docTimestampFile,
|
|
Input: main,
|
|
Implicit: ctx.RustModule().UnstrippedOutputFile(),
|
|
Args: map[string]string{
|
|
"rustdocFlags": strings.Join(rustdocFlags, " "),
|
|
"outDir": docDir.String(),
|
|
"envVars": strings.Join(rustEnvVars(ctx, deps), " "),
|
|
},
|
|
})
|
|
|
|
return docTimestampFile
|
|
}
|