platform_build_soong/cc/config/x86_linux_host.go
Colin Cross 528d67e523 Reland "Split the x86 host toolchain into glibc and musl variants"
Split the x86 host toolchain into glibc and musl variants

Create new musl toolchains that are based on the existing glibc
toolchains, and add the necessary flags for musl compiles.

This relands Ifc02f9e5afa61ff758be98b0c962f3a4b53d0546 with changes
for I46672e3a096b6ea94ff4c10e1c31e8fd010a163c.

Bug: 190084016
Change-Id: Iaa9f7a50ff601155ecd73acc5701a2c226be66dc
Test: TestArchMutator
2021-07-23 22:25:36 +00:00

398 lines
11 KiB
Go

// Copyright 2016 Google Inc. All rights reserved.
//
// 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 config
import (
"strings"
"android/soong/android"
)
var (
linuxCflags = []string{
"-Wa,--noexecstack",
"-fPIC",
"-U_FORTIFY_SOURCE",
"-D_FORTIFY_SOURCE=2",
"-fstack-protector",
// Workaround differences in inttypes.h between host and target.
//See bug 12708004.
"-D__STDC_FORMAT_MACROS",
"-D__STDC_CONSTANT_MACROS",
"--gcc-toolchain=${LinuxGccRoot}",
"-fstack-protector-strong",
}
linuxGlibcCflags = []string{
"--sysroot ${LinuxGccRoot}/sysroot",
}
linuxMuslCflags = []string{
"-D_LIBCPP_HAS_MUSL_LIBC",
"-nostdlibinc",
}
linuxLdflags = []string{
"-Wl,-z,noexecstack",
"-Wl,-z,relro",
"-Wl,-z,now",
"-Wl,--no-undefined-version",
"--gcc-toolchain=${LinuxGccRoot}",
}
linuxGlibcLdflags = []string{
"--sysroot ${LinuxGccRoot}/sysroot",
}
linuxMuslLdflags = []string{
"-nostdlib",
"-lgcc", "-lgcc_eh",
}
// Extended cflags
linuxX86Cflags = []string{
"-msse3",
"-m32",
"-march=prescott",
"-D_FILE_OFFSET_BITS=64",
"-D_LARGEFILE_SOURCE=1",
}
linuxX8664Cflags = []string{
"-m64",
}
linuxX86Ldflags = []string{
"-m32",
"-B${LinuxGccRoot}/lib/gcc/${LinuxGccTriple}/${LinuxGccVersion}/32",
"-L${LinuxGccRoot}/lib/gcc/${LinuxGccTriple}/${LinuxGccVersion}/32",
"-L${LinuxGccRoot}/${LinuxGccTriple}/lib32",
}
linuxX8664Ldflags = []string{
"-m64",
"-B${LinuxGccRoot}/lib/gcc/${LinuxGccTriple}/${LinuxGccVersion}",
"-L${LinuxGccRoot}/lib/gcc/${LinuxGccTriple}/${LinuxGccVersion}",
"-L${LinuxGccRoot}/${LinuxGccTriple}/lib64",
}
linuxAvailableLibraries = addPrefix([]string{
"c",
"dl",
"gcc",
"gcc_s",
"m",
"ncurses",
"pthread",
"resolv",
"rt",
"util",
}, "-l")
muslCrtBeginStaticBinary, muslCrtEndStaticBinary = []string{"libc_musl_crtbegin_static"}, []string{"crtend_android"}
muslCrtBeginSharedBinary, muslCrtEndSharedBinary = []string{"libc_musl_crtbegin_dynamic", "musl_linker_script"}, []string{"libc_musl_crtend"}
muslCrtBeginSharedLibrary, muslCrtEndSharedLibrary = []string{"libc_musl_crtbegin_so"}, []string{"libc_musl_crtend_so"}
muslDefaultSharedLibraries = []string{"libjemalloc5", "libc_musl"}
)
const (
linuxGccVersion = "4.8.3"
linuxGlibcVersion = "2.17"
)
func init() {
pctx.StaticVariable("LinuxGccVersion", linuxGccVersion)
pctx.StaticVariable("LinuxGlibcVersion", linuxGlibcVersion)
// Most places use the full GCC version. A few only use up to the first two numbers.
if p := strings.Split(linuxGccVersion, "."); len(p) > 2 {
pctx.StaticVariable("ShortLinuxGccVersion", strings.Join(p[:2], "."))
} else {
pctx.StaticVariable("ShortLinuxGccVersion", linuxGccVersion)
}
pctx.SourcePathVariable("LinuxGccRoot",
"prebuilts/gcc/${HostPrebuiltTag}/host/x86_64-linux-glibc${LinuxGlibcVersion}-${ShortLinuxGccVersion}")
pctx.StaticVariable("LinuxGccTriple", "x86_64-linux")
pctx.StaticVariable("LinuxCflags", strings.Join(linuxCflags, " "))
pctx.StaticVariable("LinuxLdflags", strings.Join(linuxLdflags, " "))
pctx.StaticVariable("LinuxLldflags", strings.Join(linuxLdflags, " "))
pctx.StaticVariable("LinuxX86Cflags", strings.Join(linuxX86Cflags, " "))
pctx.StaticVariable("LinuxX8664Cflags", strings.Join(linuxX8664Cflags, " "))
pctx.StaticVariable("LinuxX86Ldflags", strings.Join(linuxX86Ldflags, " "))
pctx.StaticVariable("LinuxX86Lldflags", strings.Join(linuxX86Ldflags, " "))
pctx.StaticVariable("LinuxX8664Ldflags", strings.Join(linuxX8664Ldflags, " "))
pctx.StaticVariable("LinuxX8664Lldflags", strings.Join(linuxX8664Ldflags, " "))
// Yasm flags
pctx.StaticVariable("LinuxX86YasmFlags", "-f elf32 -m x86")
pctx.StaticVariable("LinuxX8664YasmFlags", "-f elf64 -m amd64")
pctx.StaticVariable("LinuxGlibcCflags", strings.Join(linuxGlibcCflags, " "))
pctx.StaticVariable("LinuxGlibcLdflags", strings.Join(linuxGlibcLdflags, " "))
pctx.StaticVariable("LinuxGlibcLldflags", strings.Join(linuxGlibcLdflags, " "))
pctx.StaticVariable("LinuxMuslCflags", strings.Join(linuxMuslCflags, " "))
pctx.StaticVariable("LinuxMuslLdflags", strings.Join(linuxMuslLdflags, " "))
pctx.StaticVariable("LinuxMuslLldflags", strings.Join(linuxMuslLdflags, " "))
}
type toolchainLinux struct {
cFlags, ldFlags string
}
type toolchainLinuxX86 struct {
toolchain32Bit
toolchainLinux
}
type toolchainLinuxX8664 struct {
toolchain64Bit
toolchainLinux
}
func (t *toolchainLinuxX86) Name() string {
return "x86"
}
func (t *toolchainLinuxX8664) Name() string {
return "x86_64"
}
func (t *toolchainLinux) GccRoot() string {
return "${config.LinuxGccRoot}"
}
func (t *toolchainLinux) GccTriple() string {
return "${config.LinuxGccTriple}"
}
func (t *toolchainLinux) GccVersion() string {
return linuxGccVersion
}
func (t *toolchainLinux) IncludeFlags() string {
return ""
}
func (t *toolchainLinuxX86) ClangTriple() string {
return "i686-linux-gnu"
}
func (t *toolchainLinuxX86) Cflags() string {
return "${config.LinuxCflags} ${config.LinuxX86Cflags}"
}
func (t *toolchainLinuxX86) Cppflags() string {
return ""
}
func (t *toolchainLinuxX8664) ClangTriple() string {
return "x86_64-linux-gnu"
}
func (t *toolchainLinuxX8664) Cflags() string {
return "${config.LinuxCflags} ${config.LinuxX8664Cflags}"
}
func (t *toolchainLinuxX8664) Cppflags() string {
return ""
}
func (t *toolchainLinuxX86) Ldflags() string {
return "${config.LinuxLdflags} ${config.LinuxX86Ldflags}"
}
func (t *toolchainLinuxX86) Lldflags() string {
return "${config.LinuxLldflags} ${config.LinuxX86Lldflags}"
}
func (t *toolchainLinuxX8664) Ldflags() string {
return "${config.LinuxLdflags} ${config.LinuxX8664Ldflags}"
}
func (t *toolchainLinuxX8664) Lldflags() string {
return "${config.LinuxLldflags} ${config.LinuxX8664Lldflags}"
}
func (t *toolchainLinuxX86) YasmFlags() string {
return "${config.LinuxX86YasmFlags}"
}
func (t *toolchainLinuxX8664) YasmFlags() string {
return "${config.LinuxX8664YasmFlags}"
}
func (toolchainLinuxX86) LibclangRuntimeLibraryArch() string {
return "i386"
}
func (toolchainLinuxX8664) LibclangRuntimeLibraryArch() string {
return "x86_64"
}
func (t *toolchainLinux) AvailableLibraries() []string {
return linuxAvailableLibraries
}
// glibc specialization of the linux toolchain
type toolchainGlibc struct {
}
func (toolchainGlibc) Glibc() bool { return true }
func (toolchainGlibc) Cflags() string {
return "${config.LinuxGlibcCflags}"
}
func (toolchainGlibc) Ldflags() string {
return "${config.LinuxGlibcLdflags}"
}
func (toolchainGlibc) Lldflags() string {
return "${config.LinuxGlibcLldflags}"
}
type toolchainLinuxGlibcX86 struct {
toolchainLinuxX86
toolchainGlibc
}
type toolchainLinuxGlibcX8664 struct {
toolchainLinuxX8664
toolchainGlibc
}
func (t *toolchainLinuxGlibcX86) Cflags() string {
return t.toolchainLinuxX86.Cflags() + " " + t.toolchainGlibc.Cflags()
}
func (t *toolchainLinuxGlibcX86) Ldflags() string {
return t.toolchainLinuxX86.Ldflags() + " " + t.toolchainGlibc.Ldflags()
}
func (t *toolchainLinuxGlibcX86) Lldflags() string {
return t.toolchainLinuxX86.Lldflags() + " " + t.toolchainGlibc.Lldflags()
}
func (t *toolchainLinuxGlibcX8664) Cflags() string {
return t.toolchainLinuxX8664.Cflags() + " " + t.toolchainGlibc.Cflags()
}
func (t *toolchainLinuxGlibcX8664) Ldflags() string {
return t.toolchainLinuxX8664.Ldflags() + " " + t.toolchainGlibc.Ldflags()
}
func (t *toolchainLinuxGlibcX8664) Lldflags() string {
return t.toolchainLinuxX8664.Lldflags() + " " + t.toolchainGlibc.Lldflags()
}
var toolchainLinuxGlibcX86Singleton Toolchain = &toolchainLinuxGlibcX86{}
var toolchainLinuxGlibcX8664Singleton Toolchain = &toolchainLinuxGlibcX8664{}
func linuxGlibcX86ToolchainFactory(arch android.Arch) Toolchain {
return toolchainLinuxGlibcX86Singleton
}
func linuxGlibcX8664ToolchainFactory(arch android.Arch) Toolchain {
return toolchainLinuxGlibcX8664Singleton
}
// musl specialization of the linux toolchain
type toolchainMusl struct {
}
func (toolchainMusl) Musl() bool { return true }
func (toolchainMusl) CrtBeginStaticBinary() []string { return muslCrtBeginStaticBinary }
func (toolchainMusl) CrtBeginSharedBinary() []string { return muslCrtBeginSharedBinary }
func (toolchainMusl) CrtBeginSharedLibrary() []string { return muslCrtBeginSharedLibrary }
func (toolchainMusl) CrtEndStaticBinary() []string { return muslCrtEndStaticBinary }
func (toolchainMusl) CrtEndSharedBinary() []string { return muslCrtEndSharedBinary }
func (toolchainMusl) CrtEndSharedLibrary() []string { return muslCrtEndSharedLibrary }
func (toolchainMusl) DefaultSharedLibraries() []string { return muslDefaultSharedLibraries }
func (toolchainMusl) Cflags() string {
return "${config.LinuxMuslCflags}"
}
func (toolchainMusl) Ldflags() string {
return "${config.LinuxMuslLdflags}"
}
func (toolchainMusl) Lldflags() string {
return "${config.LinuxMuslLldflags}"
}
type toolchainLinuxMuslX86 struct {
toolchainLinuxX86
toolchainMusl
}
type toolchainLinuxMuslX8664 struct {
toolchainLinuxX8664
toolchainMusl
}
func (t *toolchainLinuxMuslX86) Cflags() string {
return t.toolchainLinuxX86.Cflags() + " " + t.toolchainMusl.Cflags()
}
func (t *toolchainLinuxMuslX86) Ldflags() string {
return t.toolchainLinuxX86.Ldflags() + " " + t.toolchainMusl.Ldflags()
}
func (t *toolchainLinuxMuslX86) Lldflags() string {
return t.toolchainLinuxX86.Lldflags() + " " + t.toolchainMusl.Lldflags()
}
func (t *toolchainLinuxMuslX8664) Cflags() string {
return t.toolchainLinuxX8664.Cflags() + " " + t.toolchainMusl.Cflags()
}
func (t *toolchainLinuxMuslX8664) Ldflags() string {
return t.toolchainLinuxX8664.Ldflags() + " " + t.toolchainMusl.Ldflags()
}
func (t *toolchainLinuxMuslX8664) Lldflags() string {
return t.toolchainLinuxX8664.Lldflags() + " " + t.toolchainMusl.Lldflags()
}
var toolchainLinuxMuslX86Singleton Toolchain = &toolchainLinuxMuslX86{}
var toolchainLinuxMuslX8664Singleton Toolchain = &toolchainLinuxMuslX8664{}
func linuxMuslX86ToolchainFactory(arch android.Arch) Toolchain {
return toolchainLinuxMuslX86Singleton
}
func linuxMuslX8664ToolchainFactory(arch android.Arch) Toolchain {
return toolchainLinuxMuslX8664Singleton
}
func init() {
registerToolchainFactory(android.Linux, android.X86, linuxGlibcX86ToolchainFactory)
registerToolchainFactory(android.Linux, android.X86_64, linuxGlibcX8664ToolchainFactory)
registerToolchainFactory(android.LinuxMusl, android.X86, linuxMuslX86ToolchainFactory)
registerToolchainFactory(android.LinuxMusl, android.X86_64, linuxMuslX8664ToolchainFactory)
}