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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 {
// path to the main source file that contains the program entry point (e.g. src/main.rs)
Srcs []string `android:"path,arch_variant"`
// passes -C prefer-dynamic to rustc, which tells it to dynamically link the stdlib
// (assuming it has no dylib dependencies already)
Prefer_dynamic *bool
}
type binaryDecorator struct {
*baseCompiler
Properties BinaryCompilerProperties
distFile android.OptionalPath
unstrippedOutputFile android.Path
}
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) preferDynamic() bool {
return Bool(binary.Properties.Prefer_dynamic)
}
func (binary *binaryDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags {
flags = binary.baseCompiler.compilerFlags(ctx, flags)
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,--gc-sections",
"-Wl,-z,nocopyreloc",
"-Wl,--no-undefined-version")
}
if binary.preferDynamic() {
flags.RustFlags = append(flags.RustFlags, "-C prefer-dynamic")
}
return flags
}
func (binary *binaryDecorator) compilerDeps(ctx DepsContext, deps Deps) Deps {
deps = binary.baseCompiler.compilerDeps(ctx, deps)
if ctx.toolchain().Bionic() {
deps = binary.baseCompiler.bionicDeps(ctx, deps)
deps.CrtBegin = "crtbegin_dynamic"
deps.CrtEnd = "crtend_android"
}
return deps
}
func (binary *binaryDecorator) compilerProps() []interface{} {
return append(binary.baseCompiler.compilerProps(),
&binary.Properties)
}
func (binary *binaryDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) android.Path {
fileName := binary.getStem(ctx) + ctx.toolchain().ExecutableSuffix()
srcPath := srcPathFromModuleSrcs(ctx, binary.Properties.Srcs)
outputFile := android.PathForModuleOut(ctx, fileName)
binary.unstrippedOutputFile = outputFile
flags.RustFlags = append(flags.RustFlags, deps.depFlags...)
TransformSrcToBinary(ctx, srcPath, deps, flags, outputFile, deps.linkDirs)
return outputFile
}
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