Files
build_soong/rust/compiler.go
Thiébaud Weksteen 1f7f70fe39 Remove moduleContextImpl struct
The moduleContextImpl structure contains duplicate information on the
contexts. BaseModuleContext, ModuleContext and DepsContext can already
surface which Module is being processed via Module(). Because most of
the Rust-specific methods on the *Context structures simply forward to
the Module methods, expose a RustModule() method.

Test: cd external/rust/crates; mma
Change-Id: Ifee90825d54081fc5e9a8df0b7c4580412e9158c
2020-06-24 11:56:33 +02:00

275 lines
8.6 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 (
"fmt"
"path/filepath"
"github.com/google/blueprint/proptools"
"android/soong/android"
"android/soong/rust/config"
)
func getEdition(compiler *baseCompiler) string {
return proptools.StringDefault(compiler.Properties.Edition, config.DefaultEdition)
}
func getDenyWarnings(compiler *baseCompiler) bool {
return BoolDefault(compiler.Properties.Deny_warnings, config.DefaultDenyWarnings)
}
func (compiler *baseCompiler) setNoStdlibs() {
compiler.Properties.No_stdlibs = proptools.BoolPtr(true)
}
func NewBaseCompiler(dir, dir64 string, location installLocation) *baseCompiler {
return &baseCompiler{
Properties: BaseCompilerProperties{},
dir: dir,
dir64: dir64,
location: location,
}
}
type installLocation int
const (
InstallInSystem installLocation = 0
InstallInData = iota
)
type BaseCompilerProperties struct {
// path to the source file that is the main entry point of the program (e.g. main.rs or lib.rs)
Srcs []string `android:"path,arch_variant"`
// whether to pass "-D warnings" to rustc. Defaults to true.
Deny_warnings *bool
// flags to pass to rustc
Flags []string `android:"path,arch_variant"`
// flags to pass to the linker
Ld_flags []string `android:"path,arch_variant"`
// list of rust rlib crate dependencies
Rlibs []string `android:"arch_variant"`
// list of rust dylib crate dependencies
Dylibs []string `android:"arch_variant"`
// list of rust proc_macro crate dependencies
Proc_macros []string `android:"arch_variant"`
// list of C shared library dependencies
Shared_libs []string `android:"arch_variant"`
// list of C static library dependencies
Static_libs []string `android:"arch_variant"`
// crate name, required for libraries. This must be the expected extern crate name used in source
Crate_name string `android:"arch_variant"`
// list of features to enable for this crate
Features []string `android:"arch_variant"`
// specific rust edition that should be used if the default version is not desired
Edition *string `android:"arch_variant"`
// sets name of the output
Stem *string `android:"arch_variant"`
// append to name of output
Suffix *string `android:"arch_variant"`
// install to a subdirectory of the default install path for the module
Relative_install_path *string `android:"arch_variant"`
// whether to suppress inclusion of standard crates - defaults to false
No_stdlibs *bool
}
type baseCompiler struct {
Properties BaseCompilerProperties
depFlags []string
linkDirs []string
coverageFile android.Path //rustc generates a single gcno file
// Install related
dir string
dir64 string
subDir string
relative string
path android.InstallPath
location installLocation
coverageOutputZipFile android.OptionalPath
unstrippedOutputFile android.Path
distFile android.OptionalPath
}
func (compiler *baseCompiler) coverageOutputZipPath() android.OptionalPath {
panic("baseCompiler does not implement coverageOutputZipPath()")
}
var _ compiler = (*baseCompiler)(nil)
func (compiler *baseCompiler) inData() bool {
return compiler.location == InstallInData
}
func (compiler *baseCompiler) compilerProps() []interface{} {
return []interface{}{&compiler.Properties}
}
func (compiler *baseCompiler) featuresToFlags(features []string) []string {
flags := []string{}
for _, feature := range features {
flags = append(flags, "--cfg 'feature=\""+feature+"\"'")
}
return flags
}
func (compiler *baseCompiler) compilerFlags(ctx ModuleContext, flags Flags) Flags {
if getDenyWarnings(compiler) {
flags.RustFlags = append(flags.RustFlags, "-D warnings")
}
flags.RustFlags = append(flags.RustFlags, compiler.Properties.Flags...)
flags.RustFlags = append(flags.RustFlags, compiler.featuresToFlags(compiler.Properties.Features)...)
flags.RustFlags = append(flags.RustFlags, "--edition="+getEdition(compiler))
flags.LinkFlags = append(flags.LinkFlags, compiler.Properties.Ld_flags...)
flags.GlobalRustFlags = append(flags.GlobalRustFlags, config.GlobalRustFlags...)
flags.GlobalRustFlags = append(flags.GlobalRustFlags, ctx.toolchain().ToolchainRustFlags())
flags.GlobalLinkFlags = append(flags.GlobalLinkFlags, ctx.toolchain().ToolchainLinkFlags())
if ctx.Host() && !ctx.Windows() {
rpath_prefix := `\$$ORIGIN/`
if ctx.Darwin() {
rpath_prefix = "@loader_path/"
}
var rpath string
if ctx.toolchain().Is64Bit() {
rpath = "lib64"
} else {
rpath = "lib"
}
flags.LinkFlags = append(flags.LinkFlags, "-Wl,-rpath,"+rpath_prefix+rpath)
flags.LinkFlags = append(flags.LinkFlags, "-Wl,-rpath,"+rpath_prefix+"../"+rpath)
}
return flags
}
func (compiler *baseCompiler) compile(ctx ModuleContext, flags Flags, deps PathDeps) android.Path {
panic(fmt.Errorf("baseCrater doesn't know how to crate things!"))
}
func (compiler *baseCompiler) compilerDeps(ctx DepsContext, deps Deps) Deps {
deps.Rlibs = append(deps.Rlibs, compiler.Properties.Rlibs...)
deps.Dylibs = append(deps.Dylibs, compiler.Properties.Dylibs...)
deps.ProcMacros = append(deps.ProcMacros, compiler.Properties.Proc_macros...)
deps.StaticLibs = append(deps.StaticLibs, compiler.Properties.Static_libs...)
deps.SharedLibs = append(deps.SharedLibs, compiler.Properties.Shared_libs...)
if !Bool(compiler.Properties.No_stdlibs) {
for _, stdlib := range config.Stdlibs {
// If we're building for the primary host target, use the compiler's stdlibs
if ctx.Host() && ctx.TargetPrimary() {
stdlib = stdlib + "_" + ctx.toolchain().RustTriple()
}
// This check is technically insufficient - on the host, where
// static linking is the default, if one of our static
// dependencies uses a dynamic library, we need to dynamically
// link the stdlib as well.
if (len(deps.Dylibs) > 0) || ctx.Device() {
// Dynamically linked stdlib
deps.Dylibs = append(deps.Dylibs, stdlib)
} else if ctx.Host() && !ctx.TargetPrimary() {
// Otherwise use the static in-tree stdlib for host secondary arch
deps.Rlibs = append(deps.Rlibs, stdlib+".static")
}
}
}
return deps
}
func (compiler *baseCompiler) bionicDeps(ctx DepsContext, deps Deps) Deps {
deps.SharedLibs = append(deps.SharedLibs, "liblog")
deps.SharedLibs = append(deps.SharedLibs, "libc")
deps.SharedLibs = append(deps.SharedLibs, "libm")
deps.SharedLibs = append(deps.SharedLibs, "libdl")
//TODO(b/141331117) libstd requires libgcc on Android
deps.StaticLibs = append(deps.StaticLibs, "libgcc")
return deps
}
func (compiler *baseCompiler) crateName() string {
return compiler.Properties.Crate_name
}
func (compiler *baseCompiler) installDir(ctx ModuleContext) android.InstallPath {
dir := compiler.dir
if ctx.toolchain().Is64Bit() && compiler.dir64 != "" {
dir = compiler.dir64
}
if ctx.Target().NativeBridge == android.NativeBridgeEnabled {
dir = filepath.Join(dir, ctx.Target().NativeBridgeRelativePath)
}
if !ctx.Host() && ctx.Config().HasMultilibConflict(ctx.Arch().ArchType) {
dir = filepath.Join(dir, ctx.Arch().ArchType.String())
}
return android.PathForModuleInstall(ctx, dir, compiler.subDir,
compiler.relativeInstallPath(), compiler.relative)
}
func (compiler *baseCompiler) nativeCoverage() bool {
return false
}
func (compiler *baseCompiler) install(ctx ModuleContext, file android.Path) {
compiler.path = ctx.InstallFile(compiler.installDir(ctx), file.Base(), file)
}
func (compiler *baseCompiler) getStem(ctx ModuleContext) string {
return compiler.getStemWithoutSuffix(ctx) + String(compiler.Properties.Suffix)
}
func (compiler *baseCompiler) getStemWithoutSuffix(ctx BaseModuleContext) string {
stem := ctx.ModuleName()
if String(compiler.Properties.Stem) != "" {
stem = String(compiler.Properties.Stem)
}
return stem
}
func (compiler *baseCompiler) relativeInstallPath() string {
return String(compiler.Properties.Relative_install_path)
}
func srcPathFromModuleSrcs(ctx ModuleContext, srcs []string) android.Path {
srcPaths := android.PathsForModuleSrc(ctx, srcs)
if len(srcPaths) != 1 {
ctx.PropertyErrorf("srcs", "srcs can only contain one path for rust modules")
}
return srcPaths[0]
}