platform_build_soong/cc/compiler.go
Colin Cross 0feb169460 Add proto property struct
The ProtoProperties struct was not being added to the property struct
list, preventing proto.type and proto.static properties from being set
in Android.bp files.

Bug: 32286026
Test: Add proto.type to system/extras/perfprofd/Android.bp, run soong
Change-Id: I9a5b63ddd3e7a53881ddbfd381c42aa1b4c4f454
2016-11-03 14:38:52 -07:00

389 lines
13 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 cc
import (
"fmt"
"path/filepath"
"strings"
"github.com/google/blueprint/proptools"
"android/soong/android"
"android/soong/cc/config"
)
// This file contains the basic C/C++/assembly to .o compliation steps
type BaseCompilerProperties struct {
// list of source files used to compile the C/C++ module. May be .c, .cpp, or .S files.
Srcs []string `android:"arch_variant"`
// list of source files that should not be used to build the C/C++ module.
// This is most useful in the arch/multilib variants to remove non-common files
Exclude_srcs []string `android:"arch_variant"`
// list of module-specific flags that will be used for C and C++ compiles.
Cflags []string `android:"arch_variant"`
// list of module-specific flags that will be used for C++ compiles
Cppflags []string `android:"arch_variant"`
// list of module-specific flags that will be used for C compiles
Conlyflags []string `android:"arch_variant"`
// list of module-specific flags that will be used for .S compiles
Asflags []string `android:"arch_variant"`
// list of module-specific flags that will be used for C and C++ compiles when
// compiling with clang
Clang_cflags []string `android:"arch_variant"`
// list of module-specific flags that will be used for .S compiles when
// compiling with clang
Clang_asflags []string `android:"arch_variant"`
// list of module-specific flags that will be used for .y and .yy compiles
Yaccflags []string
// the instruction set architecture to use to compile the C/C++
// module.
Instruction_set string `android:"arch_variant"`
// list of directories relative to the root of the source tree that will
// be added to the include path using -I.
// If possible, don't use this. If adding paths from the current directory use
// local_include_dirs, if adding paths from other modules use export_include_dirs in
// that module.
Include_dirs []string `android:"arch_variant"`
// list of directories relative to the Blueprints file that will
// be added to the include path using -I
Local_include_dirs []string `android:"arch_variant"`
// list of generated sources to compile. These are the names of gensrcs or
// genrule modules.
Generated_sources []string `android:"arch_variant"`
// list of generated headers to add to the include path. These are the names
// of genrule modules.
Generated_headers []string `android:"arch_variant"`
// pass -frtti instead of -fno-rtti
Rtti *bool
// if set to false, use -std=c++* instead of -std=gnu++*
Gnu_extensions *bool
Debug, Release struct {
// list of module-specific flags that will be used for C and C++ compiles in debug or
// release builds
Cflags []string `android:"arch_variant"`
} `android:"arch_variant"`
}
func NewBaseCompiler() *baseCompiler {
return &baseCompiler{}
}
type baseCompiler struct {
Properties BaseCompilerProperties
Proto ProtoProperties
deps android.Paths
}
var _ compiler = (*baseCompiler)(nil)
func (compiler *baseCompiler) appendCflags(flags []string) {
compiler.Properties.Cflags = append(compiler.Properties.Cflags, flags...)
}
func (compiler *baseCompiler) appendAsflags(flags []string) {
compiler.Properties.Asflags = append(compiler.Properties.Asflags, flags...)
}
func (compiler *baseCompiler) compilerProps() []interface{} {
return []interface{}{&compiler.Properties, &compiler.Proto}
}
func (compiler *baseCompiler) compilerInit(ctx BaseModuleContext) {}
func (compiler *baseCompiler) compilerDeps(ctx BaseModuleContext, deps Deps) Deps {
deps.GeneratedSources = append(deps.GeneratedSources, compiler.Properties.Generated_sources...)
deps.GeneratedHeaders = append(deps.GeneratedHeaders, compiler.Properties.Generated_headers...)
if compiler.hasSrcExt(".proto") {
deps = protoDeps(ctx, deps, &compiler.Proto)
}
return deps
}
// Create a Flags struct that collects the compile flags from global values,
// per-target values, module type values, and per-module Blueprints properties
func (compiler *baseCompiler) compilerFlags(ctx ModuleContext, flags Flags) Flags {
tc := ctx.toolchain()
CheckBadCompilerFlags(ctx, "cflags", compiler.Properties.Cflags)
CheckBadCompilerFlags(ctx, "cppflags", compiler.Properties.Cppflags)
CheckBadCompilerFlags(ctx, "conlyflags", compiler.Properties.Conlyflags)
CheckBadCompilerFlags(ctx, "asflags", compiler.Properties.Asflags)
esc := proptools.NinjaAndShellEscape
flags.CFlags = append(flags.CFlags, esc(compiler.Properties.Cflags)...)
flags.CppFlags = append(flags.CppFlags, esc(compiler.Properties.Cppflags)...)
flags.ConlyFlags = append(flags.ConlyFlags, esc(compiler.Properties.Conlyflags)...)
flags.AsFlags = append(flags.AsFlags, esc(compiler.Properties.Asflags)...)
flags.YaccFlags = append(flags.YaccFlags, esc(compiler.Properties.Yaccflags)...)
// Include dir cflags
rootIncludeDirs := android.PathsForSource(ctx, compiler.Properties.Include_dirs)
localIncludeDirs := android.PathsForModuleSrc(ctx, compiler.Properties.Local_include_dirs)
flags.GlobalFlags = append(flags.GlobalFlags,
includeDirsToFlags(localIncludeDirs),
includeDirsToFlags(rootIncludeDirs))
if !ctx.noDefaultCompilerFlags() {
if !ctx.sdk() || ctx.Host() {
flags.GlobalFlags = append(flags.GlobalFlags,
"${config.CommonGlobalIncludes}",
"${config.CommonGlobalSystemIncludes}",
tc.IncludeFlags(),
"${config.CommonNativehelperInclude}")
}
flags.GlobalFlags = append(flags.GlobalFlags, "-I"+android.PathForModuleSrc(ctx).String())
}
if ctx.sdk() {
// The NDK headers are installed to a common sysroot. While a more
// typical Soong approach would be to only make the headers for the
// library you're using available, we're trying to emulate the NDK
// behavior here, and the NDK always has all the NDK headers available.
flags.GlobalFlags = append(flags.GlobalFlags,
"-isystem "+getCurrentIncludePath(ctx).String(),
"-isystem "+getCurrentIncludePath(ctx).Join(ctx, tc.ClangTriple()).String())
// Traditionally this has come from android/api-level.h, but with the
// libc headers unified it must be set by the build system since we
// don't have per-API level copies of that header now.
flags.GlobalFlags = append(flags.GlobalFlags,
"-D__ANDROID_API__="+ctx.sdkVersion())
// Until the full NDK has been migrated to using ndk_headers, we still
// need to add the legacy sysroot includes to get the full set of
// headers.
legacyIncludes := fmt.Sprintf(
"prebuilts/ndk/current/platforms/android-%s/arch-%s/usr/include",
ctx.sdkVersion(), ctx.Arch().ArchType.String())
flags.GlobalFlags = append(flags.GlobalFlags, "-isystem "+legacyIncludes)
}
instructionSet := compiler.Properties.Instruction_set
if flags.RequiredInstructionSet != "" {
instructionSet = flags.RequiredInstructionSet
}
instructionSetFlags, err := tc.InstructionSetFlags(instructionSet)
if flags.Clang {
instructionSetFlags, err = tc.ClangInstructionSetFlags(instructionSet)
}
if err != nil {
ctx.ModuleErrorf("%s", err)
}
CheckBadCompilerFlags(ctx, "release.cflags", compiler.Properties.Release.Cflags)
// TODO: debug
flags.CFlags = append(flags.CFlags, esc(compiler.Properties.Release.Cflags)...)
if flags.Clang {
CheckBadCompilerFlags(ctx, "clang_cflags", compiler.Properties.Clang_cflags)
CheckBadCompilerFlags(ctx, "clang_asflags", compiler.Properties.Clang_asflags)
flags.CFlags = config.ClangFilterUnknownCflags(flags.CFlags)
flags.CFlags = append(flags.CFlags, esc(compiler.Properties.Clang_cflags)...)
flags.AsFlags = append(flags.AsFlags, esc(compiler.Properties.Clang_asflags)...)
flags.CppFlags = config.ClangFilterUnknownCflags(flags.CppFlags)
flags.ConlyFlags = config.ClangFilterUnknownCflags(flags.ConlyFlags)
flags.LdFlags = config.ClangFilterUnknownCflags(flags.LdFlags)
target := "-target " + tc.ClangTriple()
var gccPrefix string
if !ctx.Darwin() {
gccPrefix = "-B" + filepath.Join(tc.GccRoot(), tc.GccTriple(), "bin")
}
flags.CFlags = append(flags.CFlags, target, gccPrefix)
flags.AsFlags = append(flags.AsFlags, target, gccPrefix)
flags.LdFlags = append(flags.LdFlags, target, gccPrefix)
}
hod := "Host"
if ctx.Os().Class == android.Device {
hod = "Device"
}
if !ctx.noDefaultCompilerFlags() {
flags.GlobalFlags = append(flags.GlobalFlags, instructionSetFlags)
flags.ConlyFlags = append(flags.ConlyFlags, "${config.CommonGlobalConlyflags}")
if flags.Clang {
flags.AsFlags = append(flags.AsFlags, tc.ClangAsflags())
flags.CppFlags = append(flags.CppFlags, "${config.CommonClangGlobalCppflags}")
flags.GlobalFlags = append(flags.GlobalFlags,
tc.ClangCflags(),
"${config.CommonClangGlobalCflags}",
fmt.Sprintf("${config.%sClangGlobalCflags}", hod))
} else {
flags.CppFlags = append(flags.CppFlags, "${config.CommonGlobalCppflags}")
flags.GlobalFlags = append(flags.GlobalFlags,
tc.Cflags(),
"${config.CommonGlobalCflags}",
fmt.Sprintf("${config.%sGlobalCflags}", hod))
}
if Bool(ctx.AConfig().ProductVariables.Brillo) {
flags.GlobalFlags = append(flags.GlobalFlags, "-D__BRILLO__")
}
if ctx.Device() {
if Bool(compiler.Properties.Rtti) {
flags.CppFlags = append(flags.CppFlags, "-frtti")
} else {
flags.CppFlags = append(flags.CppFlags, "-fno-rtti")
}
}
flags.AsFlags = append(flags.AsFlags, "-D__ASSEMBLY__")
if flags.Clang {
flags.CppFlags = append(flags.CppFlags, tc.ClangCppflags())
} else {
flags.CppFlags = append(flags.CppFlags, tc.Cppflags())
}
}
if flags.Clang {
flags.GlobalFlags = append(flags.GlobalFlags, tc.ToolchainClangCflags())
} else {
flags.GlobalFlags = append(flags.GlobalFlags, tc.ToolchainCflags())
}
if !ctx.sdk() {
cStd := config.CStdVersion
cppStd := config.CppStdVersion
if !flags.Clang {
// GCC uses an invalid C++14 ABI (emits calls to
// __cxa_throw_bad_array_length, which is not a valid C++ RT ABI).
// http://b/25022512
cppStd = config.GccCppStdVersion
} else if ctx.Host() && !flags.Clang {
// The host GCC doesn't support C++14 (and is deprecated, so likely
// never will). Build these modules with C++11.
cppStd = config.GccCppStdVersion
}
if compiler.Properties.Gnu_extensions != nil && *compiler.Properties.Gnu_extensions == false {
cStd = gnuToCReplacer.Replace(cStd)
cppStd = gnuToCReplacer.Replace(cppStd)
}
flags.ConlyFlags = append([]string{"-std=" + cStd}, flags.ConlyFlags...)
flags.CppFlags = append([]string{"-std=" + cppStd}, flags.CppFlags...)
}
// We can enforce some rules more strictly in the code we own. strict
// indicates if this is code that we can be stricter with. If we have
// rules that we want to apply to *our* code (but maybe can't for
// vendor/device specific things), we could extend this to be a ternary
// value.
strict := true
if strings.HasPrefix(android.PathForModuleSrc(ctx).String(), "external/") {
strict = false
}
// Can be used to make some annotations stricter for code we can fix
// (such as when we mark functions as deprecated).
if strict {
flags.CFlags = append(flags.CFlags, "-DANDROID_STRICT")
}
if compiler.hasSrcExt(".proto") {
flags = protoFlags(ctx, flags, &compiler.Proto)
}
if compiler.hasSrcExt(".y") || compiler.hasSrcExt(".yy") {
flags.GlobalFlags = append(flags.GlobalFlags,
"-I"+android.PathForModuleGen(ctx, "yacc", ctx.ModuleDir()).String())
}
return flags
}
func (compiler *baseCompiler) hasSrcExt(ext string) bool {
for _, src := range compiler.Properties.Srcs {
if filepath.Ext(src) == ext {
return true
}
}
return false
}
var gnuToCReplacer = strings.NewReplacer("gnu", "c")
func ndkPathDeps(ctx ModuleContext) android.Paths {
if ctx.sdk() {
// The NDK sysroot timestamp file depends on all the NDK sysroot files
// (headers and libraries).
return android.Paths{getNdkSysrootTimestampFile(ctx)}
}
return nil
}
func (compiler *baseCompiler) compile(ctx ModuleContext, flags Flags, deps PathDeps) Objects {
pathDeps := deps.GeneratedHeaders
pathDeps = append(pathDeps, ndkPathDeps(ctx)...)
srcs := ctx.ExpandSources(compiler.Properties.Srcs, compiler.Properties.Exclude_srcs)
srcs = append(srcs, deps.GeneratedSources...)
buildFlags := flagsToBuilderFlags(flags)
srcs, genDeps := genSources(ctx, srcs, buildFlags)
pathDeps = append(pathDeps, genDeps...)
pathDeps = append(pathDeps, flags.CFlagsDeps...)
compiler.deps = pathDeps
// Compile files listed in c.Properties.Srcs into objects
objs := compileObjs(ctx, buildFlags, "", srcs, compiler.deps)
if ctx.Failed() {
return Objects{}
}
return objs
}
// Compile a list of source files into objects a specified subdirectory
func compileObjs(ctx android.ModuleContext, flags builderFlags,
subdir string, srcFiles, deps android.Paths) Objects {
return TransformSourceToObj(ctx, subdir, srcFiles, flags, deps)
}