144 lines
4.1 KiB
Go
144 lines
4.1 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 config
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import (
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"strings"
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"android/soong/android"
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_ "android/soong/cc/config"
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)
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var (
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pctx = android.NewPackageContext("android/soong/rust/config")
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RustDefaultVersion = "1.77.1"
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RustDefaultBase = "prebuilts/rust/"
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DefaultEdition = "2021"
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Stdlibs = []string{
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"libstd",
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}
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// Mapping between Soong internal arch types and std::env constants.
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// Required as Rust uses aarch64 when Soong uses arm64.
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StdEnvArch = map[android.ArchType]string{
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android.Arm: "arm",
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android.Arm64: "aarch64",
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android.X86: "x86",
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android.X86_64: "x86_64",
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}
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GlobalRustFlags = []string{
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"-Z stack-protector=strong",
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"-Z remap-cwd-prefix=.",
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"-C debuginfo=2",
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"-C opt-level=3",
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"-C relocation-model=pic",
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"-C overflow-checks=on",
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"-C force-unwind-tables=yes",
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// Use v0 mangling to distinguish from C++ symbols
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"-C symbol-mangling-version=v0",
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"--color=always",
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"-Z dylib-lto",
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"-Z link-native-libraries=no",
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}
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LinuxHostGlobalLinkFlags = []string{
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"-lc",
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"-lrt",
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"-ldl",
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"-lpthread",
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"-lm",
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"-lgcc_s",
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"-Wl,--compress-debug-sections=zstd",
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}
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deviceGlobalRustFlags = []string{
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"-C panic=abort",
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// Generate additional debug info for AutoFDO
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"-Z debug-info-for-profiling",
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// Android has ELF TLS on platform
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"-Z tls-model=global-dynamic",
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}
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deviceGlobalLinkFlags = []string{
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// Prepend the lld flags from cc_config so we stay in sync with cc
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"${cc_config.DeviceGlobalLldflags}",
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// Override cc's --no-undefined-version to allow rustc's generated alloc functions
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"-Wl,--undefined-version",
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"-Wl,-Bdynamic",
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"-nostdlib",
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"-Wl,--pack-dyn-relocs=android+relr",
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"-Wl,--use-android-relr-tags",
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"-Wl,--no-undefined",
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"-B${cc_config.ClangBin}",
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"-Wl,--compress-debug-sections=zstd",
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}
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)
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func init() {
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pctx.SourcePathVariable("RustDefaultBase", RustDefaultBase)
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pctx.VariableConfigMethod("HostPrebuiltTag", HostPrebuiltTag)
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pctx.VariableFunc("RustBase", func(ctx android.PackageVarContext) string {
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if override := ctx.Config().Getenv("RUST_PREBUILTS_BASE"); override != "" {
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return override
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}
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return "${RustDefaultBase}"
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})
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pctx.VariableFunc("RustVersion", getRustVersionPctx)
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pctx.StaticVariable("RustPath", "${RustBase}/${HostPrebuiltTag}/${RustVersion}")
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pctx.StaticVariable("RustBin", "${RustPath}/bin")
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pctx.ImportAs("cc_config", "android/soong/cc/config")
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pctx.StaticVariable("RustLinker", "${cc_config.ClangBin}/clang++")
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pctx.StaticVariable("DeviceGlobalLinkFlags", strings.Join(deviceGlobalLinkFlags, " "))
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pctx.StaticVariable("RUST_DEFAULT_VERSION", RustDefaultVersion)
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pctx.StaticVariable("GLOBAL_RUSTC_FLAGS", strings.Join(GlobalRustFlags, " "))
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pctx.StaticVariable("LINUX_HOST_GLOBAL_LINK_FLAGS", strings.Join(LinuxHostGlobalLinkFlags, " "))
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pctx.StaticVariable("DEVICE_GLOBAL_RUSTC_FLAGS", strings.Join(deviceGlobalRustFlags, " "))
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pctx.StaticVariable("DEVICE_GLOBAL_LINK_FLAGS",
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strings.Join(android.RemoveListFromList(deviceGlobalLinkFlags, []string{
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// The cc_config flags are retrieved from cc_toolchain by rust rules.
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"${cc_config.DeviceGlobalLldflags}",
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"-B${cc_config.ClangBin}",
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}), " "))
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}
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func HostPrebuiltTag(config android.Config) string {
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if config.UseHostMusl() {
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return "linux-musl-x86"
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} else {
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return config.PrebuiltOS()
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}
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}
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func getRustVersionPctx(ctx android.PackageVarContext) string {
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return GetRustVersion(ctx)
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}
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func GetRustVersion(ctx android.PathContext) string {
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if override := ctx.Config().Getenv("RUST_PREBUILTS_VERSION"); override != "" {
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return override
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}
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return RustDefaultVersion
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}
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