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// 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_binary", RustBinaryFactory)
android.RegisterModuleType("rust_binary_host", RustBinaryHostFactory)
}
type BinaryCompilerProperties struct {
// Builds this binary as a static binary. Implies prefer_rlib true.
//
// Static executables currently only support for bionic targets. Non-bionic targets will not produce a fully static
// binary, but will still implicitly imply prefer_rlib true.
Static_executable *bool `android:"arch_variant"`
}
type binaryInterface interface {
binary() bool
staticallyLinked() bool
testBinary() bool
}
type binaryDecorator struct {
*baseCompiler
stripper Stripper
Properties BinaryCompilerProperties
}
var _ compiler = (*binaryDecorator)(nil)
// rust_binary produces a binary that is runnable on a device.
func RustBinaryFactory() android.Module {
module, _ := NewRustBinary(android.HostAndDeviceSupported)
return module.Init()
}
func RustBinaryHostFactory() android.Module {
module, _ := NewRustBinary(android.HostSupported)
return module.Init()
}
func NewRustBinary(hod android.HostOrDeviceSupported) (*Module, *binaryDecorator) {
module := newModule(hod, android.MultilibFirst)
binary := &binaryDecorator{
baseCompiler: NewBaseCompiler("bin", "", InstallInSystem),
}
module.compiler = binary
return module, binary
}
func (binary *binaryDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags {
flags = binary.baseCompiler.compilerFlags(ctx, flags)
if ctx.Os().Linux() {
flags.LinkFlags = append(flags.LinkFlags, "-Wl,--gc-sections")
}
if ctx.toolchain().Bionic() {
// no-undefined-version breaks dylib compilation since __rust_*alloc* functions aren't defined,
// but we can apply this to binaries.
flags.LinkFlags = append(flags.LinkFlags,
"-Wl,-z,nocopyreloc",
"-Wl,--no-undefined-version")
if Bool(binary.Properties.Static_executable) {
flags.LinkFlags = append(flags.LinkFlags, "-static")
flags.RustFlags = append(flags.RustFlags, "-C relocation-model=static")
}
}
return flags
}
func (binary *binaryDecorator) compilerDeps(ctx DepsContext, deps Deps) Deps {
deps = binary.baseCompiler.compilerDeps(ctx, deps)
static := Bool(binary.Properties.Static_executable)
if ctx.toolchain().Bionic() {
deps = bionicDeps(ctx, deps, static)
if static {
deps.CrtBegin = []string{"crtbegin_static"}
} else {
deps.CrtBegin = []string{"crtbegin_dynamic"}
}
deps.CrtEnd = []string{"crtend_android"}
} else if ctx.Os() == android.LinuxMusl {
deps = muslDeps(ctx, deps, static)
if static {
deps.CrtBegin = []string{"libc_musl_crtbegin_static"}
} else {
deps.CrtBegin = []string{"libc_musl_crtbegin_dynamic"}
}
deps.CrtEnd = []string{"libc_musl_crtend"}
}
return deps
}
func (binary *binaryDecorator) compilerProps() []interface{} {
return append(binary.baseCompiler.compilerProps(),
&binary.Properties,
&binary.stripper.StripProperties)
}
func (binary *binaryDecorator) nativeCoverage() bool {
return true
}
func (binary *binaryDecorator) preferRlib() bool {
return Bool(binary.baseCompiler.Properties.Prefer_rlib) || Bool(binary.Properties.Static_executable)
}
func (binary *binaryDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) buildOutput {
fileName := binary.getStem(ctx) + ctx.toolchain().ExecutableSuffix()
srcPath, _ := srcPathFromModuleSrcs(ctx, binary.baseCompiler.Properties.Srcs)
outputFile := android.PathForModuleOut(ctx, fileName)
ret := buildOutput{outputFile: outputFile}
flags.RustFlags = append(flags.RustFlags, deps.depFlags...)
flags.LinkFlags = append(flags.LinkFlags, deps.depLinkFlags...)
flags.LinkFlags = append(flags.LinkFlags, deps.linkObjects.Strings()...)
if binary.stripper.NeedsStrip(ctx) {
strippedOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "unstripped", fileName)
binary.stripper.StripExecutableOrSharedLib(ctx, outputFile, strippedOutputFile)
binary.baseCompiler.strippedOutputFile = android.OptionalPathForPath(strippedOutputFile)
}
binary.baseCompiler.unstrippedOutputFile = outputFile
ret.kytheFile = TransformSrcToBinary(ctx, srcPath, deps, flags, outputFile).kytheFile
return ret
}
func (binary *binaryDecorator) autoDep(ctx android.BottomUpMutatorContext) autoDep {
// Binaries default to dylib dependencies for device, rlib for host.
if binary.preferRlib() {
return rlibAutoDep
} else if mod, ok := ctx.Module().(*Module); ok && mod.InVendor() {
// Vendor Rust binaries should prefer rlibs.
return rlibAutoDep
} else if ctx.Device() {
return dylibAutoDep
} else {
return rlibAutoDep
}
}
func (binary *binaryDecorator) stdLinkage(ctx *depsContext) RustLinkage {
if binary.preferRlib() {
return RlibLinkage
} else if ctx.RustModule().InVendor() {
return RlibLinkage
}
return binary.baseCompiler.stdLinkage(ctx)
}
func (binary *binaryDecorator) binary() bool {
return true
}
func (binary *binaryDecorator) staticallyLinked() bool {
return Bool(binary.Properties.Static_executable)
}
func (binary *binaryDecorator) testBinary() bool {
return false
}
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