Add soong_build primary builder
Initial build logic for building android with soong. It can build
a variety of C and C++ files for arm/arm64 and host.
Change-Id: I10eb37c2c2a50be6af1bb5fd568c0962b9476bf0
diff --git a/cc/cc.go b/cc/cc.go
new file mode 100644
index 0000000..641d67f
--- /dev/null
+++ b/cc/cc.go
@@ -0,0 +1,1194 @@
+//
+// 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
+
+// This file contains the module types for compiling C/C++ for Android, and converts the properties
+// into the flags and filenames necessary to pass to the compiler. The final creation of the rules
+// is handled in builder.go
+
+import (
+ "blueprint"
+ "blueprint/pathtools"
+ "fmt"
+ "path/filepath"
+ "strings"
+
+ "android/soong/common"
+)
+
+type Config interface {
+ SrcDir() string
+ PrebuiltOS() string
+}
+
+var (
+ HostPrebuiltTag = pctx.VariableConfigMethod("HostPrebuiltTag", Config.PrebuiltOS)
+ SrcDir = pctx.VariableConfigMethod("SrcDir", Config.SrcDir)
+
+ LibcRoot = pctx.StaticVariable("LibcRoot", "${SrcDir}/bionic/libc")
+ LibmRoot = pctx.StaticVariable("LibmRoot", "${SrcDir}/bionic/libm")
+)
+
+// Flags used by lots of devices. Putting them in package static variables will save bytes in
+// build.ninja so they aren't repeated for every file
+var (
+ commonGlobalCflags = []string{
+ "-DANDROID",
+ "-fmessage-length=0",
+ "-W",
+ "-Wall",
+ "-Wno-unused",
+ "-Winit-self",
+ "-Wpointer-arith",
+
+ // COMMON_RELEASE_CFLAGS
+ "-DNDEBUG",
+ "-UDEBUG",
+ }
+
+ deviceGlobalCflags = []string{
+ // TARGET_ERROR_FLAGS
+ "-Werror=return-type",
+ "-Werror=non-virtual-dtor",
+ "-Werror=address",
+ "-Werror=sequence-point",
+ }
+
+ hostGlobalCflags = []string{}
+
+ commonGlobalCppflags = []string{
+ "-Wsign-promo",
+ "-std=gnu++11",
+ }
+)
+
+func init() {
+ pctx.StaticVariable("commonGlobalCflags", strings.Join(commonGlobalCflags, " "))
+ pctx.StaticVariable("deviceGlobalCflags", strings.Join(deviceGlobalCflags, " "))
+ pctx.StaticVariable("hostGlobalCflags", strings.Join(hostGlobalCflags, " "))
+
+ pctx.StaticVariable("commonGlobalCppflags", strings.Join(commonGlobalCppflags, " "))
+
+ pctx.StaticVariable("commonClangGlobalCflags",
+ strings.Join(clangFilterUnknownCflags(commonGlobalCflags), " "))
+ pctx.StaticVariable("deviceClangGlobalCflags",
+ strings.Join(clangFilterUnknownCflags(deviceGlobalCflags), " "))
+ pctx.StaticVariable("hostClangGlobalCflags",
+ strings.Join(clangFilterUnknownCflags(hostGlobalCflags), " "))
+
+ // Everything in this list is a crime against abstraction and dependency tracking.
+ // Do not add anything to this list.
+ pctx.StaticVariable("commonGlobalIncludes", strings.Join([]string{
+ "-isystem ${SrcDir}/system/core/include",
+ "-isystem ${SrcDir}/hardware/libhardware/include",
+ "-isystem ${SrcDir}/hardware/libhardware_legacy/include",
+ "-isystem ${SrcDir}/hardware/ril/include",
+ "-isystem ${SrcDir}/libnativehelper/include",
+ "-isystem ${SrcDir}/frameworks/native/include",
+ "-isystem ${SrcDir}/frameworks/native/opengl/include",
+ "-isystem ${SrcDir}/frameworks/av/include",
+ "-isystem ${SrcDir}/frameworks/base/include",
+ }, " "))
+
+ pctx.StaticVariable("clangPath", "${SrcDir}/prebuilts/clang/${HostPrebuiltTag}/host/3.6/bin/")
+}
+
+// CcProperties describes properties used to compile all C or C++ modules
+type ccProperties struct {
+ // srcs: list of source files used to compile the C/C++ module. May be .c, .cpp, or .S files.
+ Srcs []string `android:"arch_variant,arch_subtract"`
+
+ // cflags: list of module-specific flags that will be used for C and C++ compiles.
+ Cflags []string `android:"arch_variant"`
+
+ // cppflags: list of module-specific flags that will be used for C++ compiles
+ Cppflags []string `android:"arch_variant"`
+
+ // conlyflags: list of module-specific flags that will be used for C compiles
+ Conlyflags []string `android:"arch_variant"`
+
+ // asflags: list of module-specific flags that will be used for .S compiles
+ Asflags []string `android:"arch_variant"`
+
+ // ldflags: list of module-specific flags that will be used for all link steps
+ Ldflags []string `android:"arch_variant"`
+
+ // include_dirs: 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"`
+
+ // local_include_dirs: 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"`
+
+ // export_include_dirs: list of directories relative to the Blueprints file that will
+ // be added to the include path using -I for any module that links against this module
+ Export_include_dirs []string
+
+ // clang_cflags: list of module-specific flags that will be used for C and C++ compiles when
+ // compiling with clang
+ Clang_cflags []string `android:"arch_variant"`
+
+ // clang_asflags: list of module-specific flags that will be used for .S compiles when
+ // compiling with clang
+ Clang_asflags []string `android:"arch_variant"`
+
+ // system_shared_libs: list of system libraries that will be dynamically linked to
+ // shared library and executable modules. If unset, generally defaults to libc
+ // and libm. Set to [] to prevent linking against libc and libm.
+ System_shared_libs []string
+
+ // whole_static_libs: list of modules whose object files should be linked into this module
+ // in their entirety. For static library modules, all of the .o files from the intermediate
+ // directory of the dependency will be linked into this modules .a file. For a shared library,
+ // the dependency's .a file will be linked into this module using -Wl,--whole-archive.
+ Whole_static_libs []string `android:"arch_variant"`
+
+ // static_libs: list of modules that should be statically linked into this module.
+ Static_libs []string `android:"arch_variant"`
+
+ // shared_libs: list of modules that should be dynamically linked into this module.
+ Shared_libs []string `android:"arch_variant"`
+
+ // allow_undefined_symbols: allow the module to contain undefined symbols. By default,
+ // modules cannot contain undefined symbols that are not satisified by their immediate
+ // dependencies. Set this flag to true to remove --no-undefined from the linker flags.
+ // This flag should only be necessary for compiling low-level libraries like libc.
+ Allow_undefined_symbols bool
+
+ // nocrt: don't link in crt_begin and crt_end. This flag should only be necessary for
+ // compiling crt or libc.
+ Nocrt bool `android:"arch_variant"`
+
+ // no_default_compiler_flags: don't insert default compiler flags into asflags, cflags,
+ // cppflags, conlyflags, ldflags, or include_dirs
+ No_default_compiler_flags bool
+
+ // clang: compile module with clang instead of gcc
+ Clang bool `android:"arch_variant"`
+
+ // rtti: pass -frtti instead of -fno-rtti
+ Rtti bool
+
+ // host_ldlibs: -l arguments to pass to linker for host-provided shared libraries
+ Host_ldlibs []string `android:"arch_variant"`
+
+ // stl: select the STL library to use. Possible values are "libc++", "libc++_static",
+ // "stlport", "stlport_static", "ndk", "libstdc++", or "none". Leave blank to select the
+ // default
+ Stl string
+
+ // Set for combined shared/static libraries to prevent compiling object files a second time
+ SkipCompileObjs bool `blueprint:"mutated"`
+}
+
+type unusedProperties struct {
+ Asan bool
+ Native_coverage bool
+ Strip string
+ Tags []string
+ Required []string
+}
+
+// Building C/C++ code is handled by objects that satisfy this interface via composition
+type ccModuleType interface {
+ common.AndroidModule
+
+ // Return the cflags that are specific to this _type_ of module
+ moduleTypeCflags(common.AndroidModuleContext, toolchain) []string
+
+ // Return the ldflags that are specific to this _type_ of module
+ moduleTypeLdflags(common.AndroidModuleContext, toolchain) []string
+
+ // Create a ccDeps struct that collects the module dependency info. Can also
+ // modify ccFlags in order to add dependency include directories, etc.
+ collectDeps(common.AndroidModuleContext, ccFlags) (ccDeps, ccFlags)
+
+ // Compile objects into final module
+ compileModule(common.AndroidModuleContext, ccFlags, ccDeps, []string)
+
+ // Return the output file (.o, .a or .so) for use by other modules
+ outputFile() string
+}
+
+func (c *ccBase) GenerateAndroidBuildActions(ctx common.AndroidModuleContext) {
+ toolchain := c.findToolchain(ctx)
+ if ctx.Failed() {
+ return
+ }
+
+ flags := c.flags(ctx, toolchain)
+ if ctx.Failed() {
+ return
+ }
+
+ flags = c.addStlFlags(ctx, flags)
+ if ctx.Failed() {
+ return
+ }
+
+ deps, flags := c.ccModuleType().collectDeps(ctx, flags)
+ if ctx.Failed() {
+ return
+ }
+
+ objFiles := c.compileObjs(ctx, flags, deps)
+ if ctx.Failed() {
+ return
+ }
+
+ c.ccModuleType().compileModule(ctx, flags, deps, objFiles)
+ if ctx.Failed() {
+ return
+ }
+}
+
+func (c *ccBase) ccModuleType() ccModuleType {
+ return c.module
+}
+
+var _ common.AndroidDynamicDepender = (*ccBase)(nil)
+
+func (c *ccBase) findToolchain(ctx common.AndroidModuleContext) toolchain {
+ arch := ctx.Arch()
+ factory := toolchainFactories[arch.HostOrDevice][arch.ArchType]
+ if factory == nil {
+ panic(fmt.Sprintf("Toolchain not found for %s arch %q",
+ arch.HostOrDevice.String(), arch.String()))
+ }
+ return factory(arch.ArchVariant, arch.CpuVariant)
+}
+
+type ccDeps struct {
+ staticLibs, sharedLibs, wholeStaticLibs, objFiles, includeDirs []string
+
+ crtBegin, crtEnd string
+}
+
+type ccFlags struct {
+ globalFlags []string
+ asFlags []string
+ cFlags []string
+ conlyFlags []string
+ cppFlags []string
+ ldFlags []string
+ ldLibs []string
+ includeDirs []string
+ nocrt bool
+ toolchain toolchain
+ clang bool
+
+ extraStaticLibs []string
+ extraSharedLibs []string
+}
+
+// ccBase contains the properties and members used by all C/C++ module types
+type ccBase struct {
+ common.AndroidModuleBase
+ module ccModuleType
+
+ properties ccProperties
+ unused unusedProperties
+
+ installPath string
+}
+
+func (c *ccBase) moduleTypeCflags(ctx common.AndroidModuleContext, toolchain toolchain) []string {
+ return nil
+}
+
+func (c *ccBase) moduleTypeLdflags(ctx common.AndroidModuleContext, toolchain toolchain) []string {
+ return nil
+}
+
+func (c *ccBase) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "static"}}, c.properties.Whole_static_libs...)
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "static"}}, c.properties.Static_libs...)
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "shared"}}, c.properties.Shared_libs...)
+
+ return nil
+}
+
+// Create a ccFlags struct that collects the compile flags from global values,
+// per-target values, module type values, and per-module Blueprints properties
+func (c *ccBase) flags(ctx common.AndroidModuleContext, toolchain toolchain) ccFlags {
+
+ arch := ctx.Arch()
+
+ flags := ccFlags{
+ cFlags: c.properties.Cflags,
+ cppFlags: c.properties.Cppflags,
+ conlyFlags: c.properties.Conlyflags,
+ ldFlags: c.properties.Ldflags,
+ asFlags: c.properties.Asflags,
+ nocrt: c.properties.Nocrt,
+ toolchain: toolchain,
+ clang: c.properties.Clang,
+ }
+
+ if arch.HostOrDevice.Host() {
+ // TODO: allow per-module clang disable for host
+ flags.clang = true
+ }
+
+ if flags.clang {
+ flags.cFlags = clangFilterUnknownCflags(flags.cFlags)
+ flags.cFlags = append(flags.cFlags, c.properties.Clang_cflags...)
+ flags.asFlags = append(flags.asFlags, c.properties.Clang_asflags...)
+ flags.cppFlags = clangFilterUnknownCflags(flags.cppFlags)
+ flags.conlyFlags = clangFilterUnknownCflags(flags.conlyFlags)
+ flags.ldFlags = clangFilterUnknownCflags(flags.ldFlags)
+
+ target := "-target " + toolchain.ClangTriple()
+ gccPrefix := "-B" + filepath.Join(toolchain.GccRoot(), toolchain.GccTriple(), "bin")
+
+ flags.cFlags = append(flags.cFlags, target, gccPrefix)
+ flags.asFlags = append(flags.asFlags, target, gccPrefix)
+ flags.ldFlags = append(flags.ldFlags, target, gccPrefix)
+
+ if arch.HostOrDevice.Host() {
+ gccToolchain := "--gcc-toolchain=" + toolchain.GccRoot()
+ sysroot := "--sysroot=" + filepath.Join(toolchain.GccRoot(), "sysroot")
+
+ // TODO: also need more -B, -L flags to make host builds hermetic
+ flags.cFlags = append(flags.cFlags, gccToolchain, sysroot)
+ flags.asFlags = append(flags.asFlags, gccToolchain, sysroot)
+ flags.ldFlags = append(flags.ldFlags, gccToolchain, sysroot)
+ }
+ }
+
+ flags.includeDirs = pathtools.PrefixPaths(c.properties.Include_dirs, ctx.Config().(Config).SrcDir())
+ localIncludeDirs := pathtools.PrefixPaths(c.properties.Local_include_dirs, common.ModuleSrcDir(ctx))
+ flags.includeDirs = append(flags.includeDirs, localIncludeDirs...)
+
+ if !c.properties.No_default_compiler_flags {
+ flags.includeDirs = append(flags.includeDirs, []string{
+ common.ModuleSrcDir(ctx),
+ common.ModuleOutDir(ctx),
+ common.ModuleGenDir(ctx),
+ }...)
+
+ if arch.HostOrDevice.Device() && !c.properties.Allow_undefined_symbols {
+ flags.ldFlags = append(flags.ldFlags, "-Wl,--no-undefined")
+ }
+
+ if flags.clang {
+ flags.globalFlags = []string{
+ "${commonGlobalIncludes}",
+ toolchain.IncludeFlags(),
+ toolchain.ClangCflags(),
+ "${commonClangGlobalCflags}",
+ fmt.Sprintf("${%sClangGlobalCflags}", arch.HostOrDevice),
+ }
+ } else {
+ flags.globalFlags = []string{
+ "${commonGlobalIncludes}",
+ toolchain.IncludeFlags(),
+ toolchain.Cflags(),
+ "${commonGlobalCflags}",
+ fmt.Sprintf("${%sGlobalCflags}", arch.HostOrDevice),
+ }
+ }
+
+ if arch.HostOrDevice.Host() {
+ flags.ldFlags = append(flags.ldFlags, c.properties.Host_ldlibs...)
+ }
+
+ if arch.HostOrDevice.Device() {
+ if c.properties.Rtti {
+ flags.cppFlags = append(flags.cppFlags, "-frtti")
+ } else {
+ flags.cppFlags = append(flags.cppFlags, "-fno-rtti")
+ }
+ }
+
+ flags.asFlags = append(flags.asFlags, "-D__ASSEMBLY__")
+
+ if flags.clang {
+ flags.cppFlags = append(flags.cppFlags, toolchain.ClangCppflags())
+ flags.ldFlags = append(flags.ldFlags, toolchain.ClangLdflags())
+ } else {
+ flags.cppFlags = append(flags.cppFlags, toolchain.Cppflags())
+ flags.ldFlags = append(flags.ldFlags, toolchain.Ldflags())
+ }
+ }
+
+ flags.cFlags = append(flags.cFlags, c.ccModuleType().moduleTypeCflags(ctx, toolchain)...)
+ flags.ldFlags = append(flags.ldFlags, c.ccModuleType().moduleTypeLdflags(ctx, toolchain)...)
+
+ // Optimization to reduce size of build.ninja
+ // Replace the long list of flags for each file with a module-local variable
+ ctx.Variable(pctx, "cflags", strings.Join(flags.cFlags, " "))
+ ctx.Variable(pctx, "cppflags", strings.Join(flags.cppFlags, " "))
+ ctx.Variable(pctx, "asflags", strings.Join(flags.asFlags, " "))
+ flags.cFlags = []string{"$cflags"}
+ flags.cppFlags = []string{"$cppflags"}
+ flags.asFlags = []string{"$asflags"}
+
+ return flags
+}
+
+// Modify ccFlags structs with STL library info
+func (c *ccBase) addStlFlags(ctx common.AndroidModuleContext, flags ccFlags) ccFlags {
+ if !c.properties.No_default_compiler_flags {
+ arch := ctx.Arch()
+ stl := "libc++" // TODO: mingw needs libstdc++
+ if c.properties.Stl != "" {
+ stl = c.properties.Stl
+ }
+
+ stlStatic := false
+ if strings.HasSuffix(stl, "_static") {
+ stlStatic = true
+ }
+
+ switch stl {
+ case "libc++", "libc++_static":
+ flags.cFlags = append(flags.cFlags, "-D_USING_LIBCXX")
+ flags.includeDirs = append(flags.includeDirs, "${SrcDir}/external/libcxx/include")
+ if arch.HostOrDevice.Host() {
+ flags.cppFlags = append(flags.cppFlags, "-nostdinc++")
+ flags.ldFlags = append(flags.ldFlags, "-nodefaultlibs")
+ flags.ldLibs = append(flags.ldLibs, "-lc", "-lm", "-lpthread")
+ }
+ if stlStatic {
+ flags.extraStaticLibs = append(flags.extraStaticLibs, "libc++_static")
+ } else {
+ flags.extraSharedLibs = append(flags.extraSharedLibs, "libc++")
+ }
+ case "stlport", "stlport_static":
+ if arch.HostOrDevice.Device() {
+ flags.includeDirs = append(flags.includeDirs,
+ "${SrcDir}/external/stlport/stlport",
+ "${SrcDir}/bionic/libstdc++/include",
+ "${SrcDir}/bionic")
+ if stlStatic {
+ flags.extraStaticLibs = append(flags.extraStaticLibs, "libstdc++", "libstlport_static")
+ } else {
+ flags.extraSharedLibs = append(flags.extraSharedLibs, "libstdc++", "libstlport")
+ }
+ }
+ case "ndk":
+ panic("TODO")
+ case "libstdc++":
+ // Using bionic's basic libstdc++. Not actually an STL. Only around until the
+ // tree is in good enough shape to not need it.
+ // Host builds will use GNU libstdc++.
+ if arch.HostOrDevice.Device() {
+ flags.includeDirs = append(flags.includeDirs, "${SrcDir}/bionic/libstdc++/include")
+ flags.extraSharedLibs = append(flags.extraSharedLibs, "libstdc++")
+ }
+ case "none":
+ if arch.HostOrDevice.Host() {
+ flags.cppFlags = append(flags.cppFlags, "-nostdinc++")
+ flags.ldFlags = append(flags.ldFlags, "-nodefaultlibs")
+ flags.ldLibs = append(flags.ldLibs, "-lc", "-lm")
+ }
+ default:
+ ctx.ModuleErrorf("stl: %q is not a supported STL", stl)
+ }
+
+ }
+ return flags
+}
+
+// Compile a list of source files into objects a specified subdirectory
+func (c *ccBase) customCompileObjs(ctx common.AndroidModuleContext, flags ccFlags,
+ deps ccDeps, subdir string, srcFiles []string) []string {
+
+ srcFiles = pathtools.PrefixPaths(srcFiles, common.ModuleSrcDir(ctx))
+ srcFiles = common.ExpandGlobs(ctx, srcFiles)
+
+ return TransformSourceToObj(ctx, subdir, srcFiles, ccFlagsToBuilderFlags(flags))
+}
+
+// Compile files listed in c.properties.Srcs into objects
+func (c *ccBase) compileObjs(ctx common.AndroidModuleContext, flags ccFlags,
+ deps ccDeps) []string {
+
+ if c.properties.SkipCompileObjs {
+ return nil
+ }
+
+ return c.customCompileObjs(ctx, flags, deps, "", c.properties.Srcs)
+}
+
+func (c *ccBase) outputFile() string {
+ return ""
+}
+
+func (c *ccBase) collectDepsFromList(ctx common.AndroidModuleContext,
+ names []string) (modules []common.AndroidModule,
+ outputFiles []string, exportedIncludeDirs []string) {
+
+ for _, n := range names {
+ found := false
+ ctx.VisitDirectDeps(func(m blueprint.Module) {
+ otherName := ctx.OtherModuleName(m)
+ if otherName != n {
+ return
+ }
+
+ if a, ok := m.(ccModuleType); ok {
+ if a.Disabled() {
+ // If a cc_library host+device module depends on a library that exists as both
+ // cc_library_shared and cc_library_host_shared, it will end up with two
+ // dependencies with the same name, one of which is marked disabled for each
+ // of host and device. Ignore the disabled one.
+ return
+ }
+ if a.HostOrDevice() != ctx.Arch().HostOrDevice {
+ ctx.ModuleErrorf("host/device mismatch between %q and %q", ctx.ModuleName(),
+ otherName)
+ return
+ }
+
+ if outputFile := a.outputFile(); outputFile != "" {
+ if found {
+ ctx.ModuleErrorf("multiple modules satisified dependency on %q", otherName)
+ return
+ }
+ outputFiles = append(outputFiles, outputFile)
+ modules = append(modules, a)
+ if i, ok := a.(ccExportedIncludeDirsProducer); ok {
+ exportedIncludeDirs = append(exportedIncludeDirs, i.exportedIncludeDirs()...)
+ }
+ found = true
+ } else {
+ ctx.ModuleErrorf("module %q missing output file", otherName)
+ return
+ }
+ } else {
+ ctx.ModuleErrorf("module %q not an android module", otherName)
+ return
+ }
+ })
+ if !found {
+ ctx.ModuleErrorf("unsatisified dependency on %q", n)
+ }
+ }
+
+ return modules, outputFiles, exportedIncludeDirs
+}
+
+func (c *ccBase) collectDeps(ctx common.AndroidModuleContext, flags ccFlags) (ccDeps, ccFlags) {
+ var deps ccDeps
+ var newIncludeDirs []string
+
+ wholeStaticLibNames := c.properties.Whole_static_libs
+ _, deps.wholeStaticLibs, newIncludeDirs = c.collectDepsFromList(ctx, wholeStaticLibNames)
+
+ deps.includeDirs = append(deps.includeDirs, newIncludeDirs...)
+
+ staticLibNames := c.properties.Static_libs
+ staticLibNames = append(staticLibNames, flags.extraStaticLibs...)
+ _, deps.staticLibs, newIncludeDirs = c.collectDepsFromList(ctx, staticLibNames)
+ deps.includeDirs = append(deps.includeDirs, newIncludeDirs...)
+
+ return deps, flags
+}
+
+// ccDynamic contains the properties and members used by shared libraries and dynamic executables
+type ccDynamic struct {
+ ccBase
+}
+
+const defaultSystemSharedLibraries = "__default__"
+
+func (c *ccDynamic) systemSharedLibs() []string {
+
+ if len(c.properties.System_shared_libs) == 1 &&
+ c.properties.System_shared_libs[0] == defaultSystemSharedLibraries {
+
+ if c.HostOrDevice().Host() {
+ return []string{}
+ } else {
+ return []string{"libc", "libm"}
+ }
+ }
+ return c.properties.System_shared_libs
+}
+
+var (
+ stlSharedLibs = []string{"libc++", "libstlport", "libstdc++"}
+ stlSharedHostLibs = []string{"libc++"}
+ stlStaticLibs = []string{"libc++_static", "libstlport_static", "libstdc++"}
+ stlStaticHostLibs = []string{"libc++_static"}
+)
+
+func (c *ccDynamic) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
+ deps := c.ccBase.AndroidDynamicDependencies(ctx)
+
+ if c.HostOrDevice().Device() {
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "shared"}}, c.systemSharedLibs()...)
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "static"}},
+ "libcompiler_rt-extras",
+ //"libgcov",
+ "libatomic",
+ "libgcc")
+
+ if c.properties.Stl != "none" {
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "shared"}}, stlSharedLibs...)
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "static"}}, stlStaticLibs...)
+ }
+ } else {
+ if c.properties.Stl != "none" {
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "shared"}}, stlSharedHostLibs...)
+ ctx.AddVariationDependencies([]blueprint.Variation{{"link", "static"}}, stlStaticHostLibs...)
+ }
+ }
+
+ return deps
+}
+
+var implicitStaticLibs = []string{"libcompiler_rt-extras" /*"libgcov",*/, "libatomic", "libgcc"}
+
+func (c *ccDynamic) collectDeps(ctx common.AndroidModuleContext, flags ccFlags) (ccDeps, ccFlags) {
+ var newIncludeDirs []string
+
+ deps, flags := c.ccBase.collectDeps(ctx, flags)
+
+ systemSharedLibs := c.systemSharedLibs()
+ sharedLibNames := make([]string, 0, len(c.properties.Shared_libs)+len(systemSharedLibs)+
+ len(flags.extraSharedLibs))
+ sharedLibNames = append(sharedLibNames, c.properties.Shared_libs...)
+ sharedLibNames = append(sharedLibNames, systemSharedLibs...)
+ sharedLibNames = append(sharedLibNames, flags.extraSharedLibs...)
+ _, deps.sharedLibs, newIncludeDirs = c.collectDepsFromList(ctx, sharedLibNames)
+ deps.includeDirs = append(deps.includeDirs, newIncludeDirs...)
+
+ if ctx.Arch().HostOrDevice.Device() {
+ var staticLibs []string
+ staticLibNames := implicitStaticLibs
+ _, staticLibs, newIncludeDirs = c.collectDepsFromList(ctx, staticLibNames)
+ deps.staticLibs = append(deps.staticLibs, staticLibs...)
+ deps.includeDirs = append(deps.includeDirs, newIncludeDirs...)
+ }
+
+ ctx.VisitDirectDeps(func(m blueprint.Module) {
+ if obj, ok := m.(*ccObject); ok {
+ otherName := ctx.OtherModuleName(m)
+ if strings.HasPrefix(otherName, "crtbegin") {
+ if !c.properties.Nocrt {
+ deps.crtBegin = obj.outputFile()
+ }
+ } else if strings.HasPrefix(otherName, "crtend") {
+ if !c.properties.Nocrt {
+ deps.crtEnd = obj.outputFile()
+ }
+ } else {
+ ctx.ModuleErrorf("object module type only support for crtbegin and crtend, found %q",
+ ctx.OtherModuleName(m))
+ }
+ }
+ })
+
+ flags.includeDirs = append(flags.includeDirs, deps.includeDirs...)
+
+ return deps, flags
+}
+
+type ccExportedIncludeDirsProducer interface {
+ exportedIncludeDirs() []string
+}
+
+//
+// Combined static+shared libraries
+//
+
+type ccLibrary struct {
+ ccDynamic
+
+ primary *ccLibrary
+ primaryObjFiles []string
+ objFiles []string
+ exportIncludeDirs []string
+ out string
+
+ libraryProperties struct {
+ BuildStatic bool `blueprint:"mutated"`
+ BuildShared bool `blueprint:"mutated"`
+ IsShared bool `blueprint:"mutated"`
+ IsStatic bool `blueprint:"mutated"`
+
+ Static struct {
+ Srcs []string `android:"arch_variant"`
+ Cflags []string `android:"arch_variant"`
+ } `android:"arch_variant"`
+ Shared struct {
+ Srcs []string `android:"arch_variant"`
+ Cflags []string `android:"arch_variant"`
+ } `android:"arch_variant"`
+ }
+}
+
+func NewCCLibrary() (blueprint.Module, []interface{}) {
+ module := &ccLibrary{}
+ module.module = module
+ module.properties.System_shared_libs = []string{defaultSystemSharedLibraries}
+ module.libraryProperties.BuildShared = true
+ module.libraryProperties.BuildStatic = true
+
+ return common.InitAndroidModule(module, common.HostAndDeviceSupported, "both",
+ &module.properties, &module.unused, &module.libraryProperties)
+}
+
+func (c *ccLibrary) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
+ if c.libraryProperties.IsShared {
+ deps := c.ccDynamic.AndroidDynamicDependencies(ctx)
+ if c.HostOrDevice().Device() {
+ deps = append(deps, "crtbegin_so", "crtend_so")
+ }
+ return deps
+ } else {
+ return c.ccBase.AndroidDynamicDependencies(ctx)
+ }
+}
+
+func (c *ccLibrary) collectDeps(ctx common.AndroidModuleContext, flags ccFlags) (ccDeps, ccFlags) {
+ if c.libraryProperties.IsStatic {
+ deps, flags := c.ccBase.collectDeps(ctx, flags)
+ wholeStaticLibNames := c.properties.Whole_static_libs
+ wholeStaticLibs, _, _ := c.collectDepsFromList(ctx, wholeStaticLibNames)
+
+ for _, m := range wholeStaticLibs {
+ if staticLib, ok := m.(*ccLibrary); ok && staticLib.libraryProperties.IsStatic {
+ deps.objFiles = append(deps.objFiles, staticLib.allObjFiles()...)
+ } else {
+ ctx.ModuleErrorf("module %q not a static library", ctx.OtherModuleName(m))
+ }
+ }
+
+ return deps, flags
+ } else if c.libraryProperties.IsShared {
+ return c.ccDynamic.collectDeps(ctx, flags)
+ } else {
+ panic("Not shared or static")
+ }
+}
+
+func (c *ccLibrary) outputFile() string {
+ return c.out
+}
+
+func (c *ccLibrary) allObjFiles() []string {
+ return c.objFiles
+}
+
+func (c *ccLibrary) exportedIncludeDirs() []string {
+ return c.exportIncludeDirs
+}
+
+func (c *ccLibrary) moduleTypeCflags(ctx common.AndroidModuleContext, toolchain toolchain) []string {
+ return []string{"-fPIC"}
+}
+
+func (c *ccLibrary) moduleTypeLdflags(ctx common.AndroidModuleContext, toolchain toolchain) []string {
+ if c.libraryProperties.IsShared {
+ libName := ctx.ModuleName()
+ // GCC for Android assumes that -shared means -Bsymbolic, use -Wl,-shared instead
+ sharedFlag := "-Wl,-shared"
+ if c.properties.Clang || ctx.Arch().HostOrDevice.Host() {
+ sharedFlag = "-shared"
+ }
+ if ctx.Arch().HostOrDevice.Device() {
+ return []string{
+ "-nostdlib",
+ "-Wl,--gc-sections",
+ sharedFlag,
+ "-Wl,-soname," + libName,
+ }
+ } else {
+ return []string{
+ "-Wl,--gc-sections",
+ sharedFlag,
+ "-Wl,-soname," + libName,
+ }
+ }
+ } else {
+ return nil
+ }
+}
+
+func (c *ccLibrary) compileStaticLibrary(ctx common.AndroidModuleContext,
+ flags ccFlags, deps ccDeps, objFiles []string) {
+
+ staticFlags := flags
+ staticFlags.cFlags = append(staticFlags.cFlags, c.libraryProperties.Static.Cflags...)
+ objFilesStatic := c.customCompileObjs(ctx, staticFlags, deps, common.DeviceStaticLibrary,
+ c.libraryProperties.Static.Srcs)
+
+ objFiles = append(objFiles, objFilesStatic...)
+
+ var includeDirs []string
+
+ wholeStaticLibNames := c.properties.Whole_static_libs
+ wholeStaticLibs, _, newIncludeDirs := c.collectDepsFromList(ctx, wholeStaticLibNames)
+ includeDirs = append(includeDirs, newIncludeDirs...)
+
+ for _, m := range wholeStaticLibs {
+ if staticLib, ok := m.(*ccLibrary); ok && staticLib.libraryProperties.IsStatic {
+ objFiles = append(objFiles, staticLib.allObjFiles()...)
+ } else {
+ ctx.ModuleErrorf("module %q not a static library", ctx.OtherModuleName(m))
+ }
+ }
+
+ staticLibNames := c.properties.Static_libs
+ _, _, newIncludeDirs = c.collectDepsFromList(ctx, staticLibNames)
+ includeDirs = append(includeDirs, newIncludeDirs...)
+
+ ctx.VisitDirectDeps(func(m blueprint.Module) {
+ if obj, ok := m.(*ccObject); ok {
+ otherName := ctx.OtherModuleName(m)
+ if !strings.HasPrefix(otherName, "crtbegin") && !strings.HasPrefix(otherName, "crtend") {
+ objFiles = append(objFiles, obj.outputFile())
+ }
+ }
+ })
+
+ outputFile := filepath.Join(common.ModuleOutDir(ctx), ctx.ModuleName()+staticLibraryExtension)
+
+ TransformObjToStaticLib(ctx, objFiles, ccFlagsToBuilderFlags(flags), outputFile)
+
+ c.objFiles = objFiles
+ c.out = outputFile
+ c.exportIncludeDirs = pathtools.PrefixPaths(c.properties.Export_include_dirs,
+ common.ModuleSrcDir(ctx))
+
+ ctx.CheckbuildFile(outputFile)
+}
+
+func (c *ccLibrary) compileSharedLibrary(ctx common.AndroidModuleContext,
+ flags ccFlags, deps ccDeps, objFiles []string) {
+
+ sharedFlags := flags
+ sharedFlags.cFlags = append(sharedFlags.cFlags, c.libraryProperties.Shared.Cflags...)
+ objFilesShared := c.customCompileObjs(ctx, sharedFlags, deps, common.DeviceSharedLibrary,
+ c.libraryProperties.Shared.Srcs)
+
+ objFiles = append(objFiles, objFilesShared...)
+
+ outputFile := filepath.Join(common.ModuleOutDir(ctx), ctx.ModuleName()+sharedLibraryExtension)
+
+ TransformObjToDynamicBinary(ctx, objFiles, deps.sharedLibs, deps.staticLibs, deps.wholeStaticLibs,
+ deps.crtBegin, deps.crtEnd, ccFlagsToBuilderFlags(flags), outputFile)
+
+ c.out = outputFile
+ c.exportIncludeDirs = pathtools.PrefixPaths(c.properties.Export_include_dirs,
+ common.ModuleSrcDir(ctx))
+
+ installDir := "lib"
+ if flags.toolchain.Is64Bit() {
+ installDir = "lib64"
+ }
+
+ ctx.InstallFile(installDir, outputFile)
+}
+
+func (c *ccLibrary) compileModule(ctx common.AndroidModuleContext,
+ flags ccFlags, deps ccDeps, objFiles []string) {
+
+ // Reuse the object files from the matching static library if it exists
+ if c.primary == c {
+ c.primaryObjFiles = objFiles
+ } else {
+ objFiles = append([]string(nil), c.primary.primaryObjFiles...)
+ }
+
+ if c.libraryProperties.IsStatic {
+ c.compileStaticLibrary(ctx, flags, deps, objFiles)
+ } else {
+ c.compileSharedLibrary(ctx, flags, deps, objFiles)
+ }
+}
+
+//
+// Objects (for crt*.o)
+//
+
+type ccObject struct {
+ ccBase
+ out string
+}
+
+func NewCCObject() (blueprint.Module, []interface{}) {
+ module := &ccObject{}
+ module.module = module
+
+ return common.InitAndroidModule(module, common.DeviceSupported, "both",
+ &module.properties, &module.unused)
+}
+
+func (*ccObject) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
+ // object files can't have any dynamic dependencies
+ return nil
+}
+
+func (c *ccObject) collectDeps(ctx common.AndroidModuleContext, flags ccFlags) (ccDeps, ccFlags) {
+ deps, flags := c.ccBase.collectDeps(ctx, flags)
+ ctx.VisitDirectDeps(func(m blueprint.Module) {
+ if obj, ok := m.(*ccObject); ok {
+ deps.objFiles = append(deps.objFiles, obj.outputFile())
+ } else {
+ ctx.ModuleErrorf("Unknown module type for dependency %q", ctx.OtherModuleName(m))
+ }
+ })
+
+ return deps, flags
+}
+
+func (c *ccObject) compileModule(ctx common.AndroidModuleContext,
+ flags ccFlags, deps ccDeps, objFiles []string) {
+
+ objFiles = append(objFiles, deps.objFiles...)
+
+ var outputFile string
+ if len(objFiles) == 1 {
+ outputFile = objFiles[0]
+ } else {
+ outputFile = filepath.Join(common.ModuleOutDir(ctx), ctx.ModuleName()+".o")
+ TransformObjsToObj(ctx, objFiles, ccFlagsToBuilderFlags(flags), outputFile)
+ }
+
+ c.out = outputFile
+
+ ctx.CheckbuildFile(outputFile)
+}
+
+func (c *ccObject) outputFile() string {
+ return c.out
+}
+
+//
+// Executables
+//
+
+type ccBinary struct {
+ ccDynamic
+ binaryProperties binaryProperties
+}
+
+type binaryProperties struct {
+ // static_executable: compile executable with -static
+ Static_executable bool
+
+ // stem: set the name of the output
+ Stem string `android:"arch_variant"`
+
+ // prefix_symbols: if set, add an extra objcopy --prefix-symbols= step
+ Prefix_symbols string
+}
+
+func (c *ccBinary) getStem(ctx common.AndroidModuleContext) string {
+ if c.binaryProperties.Stem != "" {
+ return c.binaryProperties.Stem
+ }
+ return ctx.ModuleName()
+}
+
+func (c *ccBinary) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
+ deps := c.ccDynamic.AndroidDynamicDependencies(ctx)
+ if c.HostOrDevice().Device() {
+ if c.binaryProperties.Static_executable {
+ deps = append(deps, "crtbegin_static", "crtend_android")
+ } else {
+ deps = append(deps, "crtbegin_dynamic", "crtend_android")
+ }
+ }
+ return deps
+}
+
+func NewCCBinary() (blueprint.Module, []interface{}) {
+ module := &ccBinary{}
+ module.module = module
+
+ module.properties.System_shared_libs = []string{defaultSystemSharedLibraries}
+ return common.InitAndroidModule(module, common.HostAndDeviceSupported, "first", &module.properties,
+ &module.unused, &module.binaryProperties)
+}
+
+func (c *ccBinary) moduleTypeCflags(ctx common.AndroidModuleContext, toolchain toolchain) []string {
+ return []string{"-fpie"}
+}
+
+func (c *ccBinary) moduleTypeLdflags(ctx common.AndroidModuleContext, toolchain toolchain) []string {
+ if ctx.Arch().HostOrDevice.Device() {
+ linker := "/system/bin/linker"
+ if toolchain.Is64Bit() {
+ linker = "/system/bin/linker64"
+ }
+
+ return []string{
+ "-nostdlib",
+ "-Bdynamic",
+ fmt.Sprintf("-Wl,-dynamic-linker,%s", linker),
+ "-Wl,--gc-sections",
+ "-Wl,-z,nocopyreloc",
+ }
+ }
+
+ return nil
+}
+
+func (c *ccBinary) compileModule(ctx common.AndroidModuleContext,
+ flags ccFlags, deps ccDeps, objFiles []string) {
+
+ if !c.binaryProperties.Static_executable && inList("libc", c.properties.Static_libs) {
+ ctx.ModuleErrorf("statically linking libc to dynamic executable, please remove libc\n" +
+ "from static libs or set static_executable: true")
+ }
+
+ outputFile := filepath.Join(common.ModuleOutDir(ctx), c.getStem(ctx))
+
+ TransformObjToDynamicBinary(ctx, objFiles, deps.sharedLibs, deps.staticLibs, deps.wholeStaticLibs,
+ deps.crtBegin, deps.crtEnd, ccFlagsToBuilderFlags(flags), outputFile)
+
+ ctx.InstallFile("bin", outputFile)
+}
+
+//
+// Static library
+//
+
+func NewCCLibraryStatic() (blueprint.Module, []interface{}) {
+ module := &ccLibrary{}
+ module.module = module
+ module.libraryProperties.BuildStatic = true
+
+ return common.InitAndroidModule(module, common.HostAndDeviceSupported, "both",
+ &module.properties, &module.unused)
+}
+
+//
+// Shared libraries
+//
+
+func NewCCLibraryShared() (blueprint.Module, []interface{}) {
+ module := &ccLibrary{}
+ module.module = module
+ module.properties.System_shared_libs = []string{defaultSystemSharedLibraries}
+ module.libraryProperties.BuildShared = true
+
+ return common.InitAndroidModule(module, common.HostAndDeviceSupported, "both",
+ &module.properties, &module.unused)
+}
+
+//
+// Host static library
+//
+
+func NewCCLibraryHostStatic() (blueprint.Module, []interface{}) {
+ module := &ccLibrary{}
+ module.module = module
+ module.libraryProperties.BuildStatic = true
+
+ return common.InitAndroidModule(module, common.HostSupported, "both",
+ &module.properties, &module.unused)
+}
+
+//
+// Host Shared libraries
+//
+
+func NewCCLibraryHostShared() (blueprint.Module, []interface{}) {
+ module := &ccLibrary{}
+ module.module = module
+ module.libraryProperties.BuildShared = true
+
+ return common.InitAndroidModule(module, common.HostSupported, "both",
+ &module.properties, &module.unused)
+}
+
+//
+// Host Binaries
+//
+
+func NewCCBinaryHost() (blueprint.Module, []interface{}) {
+ module := &ccBinary{}
+ module.module = module
+
+ return common.InitAndroidModule(module, common.HostSupported, "first",
+ &module.properties, &module.unused)
+}
+
+//
+// Device libraries shipped with gcc
+//
+
+type toolchainLibrary struct {
+ ccLibrary
+}
+
+func (*toolchainLibrary) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
+ // toolchain libraries can't have any dependencies
+ return nil
+}
+
+func (*toolchainLibrary) collectDeps(ctx common.AndroidModuleContext, flags ccFlags) (ccDeps, ccFlags) {
+ // toolchain libraries can't have any dependencies
+ return ccDeps{}, flags
+}
+
+func NewToolchainLibrary() (blueprint.Module, []interface{}) {
+ module := &toolchainLibrary{}
+ module.module = module
+ module.libraryProperties.BuildStatic = true
+
+ return common.InitAndroidModule(module, common.DeviceSupported, "both")
+}
+
+func (c *toolchainLibrary) compileModule(ctx common.AndroidModuleContext,
+ flags ccFlags, deps ccDeps, objFiles []string) {
+
+ libName := ctx.ModuleName() + staticLibraryExtension
+ outputFile := filepath.Join(common.ModuleOutDir(ctx), libName)
+
+ CopyGccLib(ctx, libName, ccFlagsToBuilderFlags(flags), outputFile)
+
+ c.out = outputFile
+
+ ctx.CheckbuildFile(outputFile)
+}
+
+func LinkageMutator(mctx blueprint.EarlyMutatorContext) {
+ if c, ok := mctx.Module().(*ccLibrary); ok {
+ var modules []blueprint.Module
+ if c.libraryProperties.BuildStatic && c.libraryProperties.BuildShared {
+ modules = mctx.CreateLocalVariations("static", "shared")
+ modules[0].(*ccLibrary).libraryProperties.IsStatic = true
+ modules[1].(*ccLibrary).libraryProperties.IsShared = true
+ } else if c.libraryProperties.BuildStatic {
+ modules = mctx.CreateLocalVariations("static")
+ modules[0].(*ccLibrary).libraryProperties.IsStatic = true
+ } else if c.libraryProperties.BuildShared {
+ modules = mctx.CreateLocalVariations("shared")
+ modules[0].(*ccLibrary).libraryProperties.IsShared = true
+ } else {
+ panic("ccLibrary not static or shared")
+ }
+ primary := modules[0].(*ccLibrary)
+ for _, m := range modules {
+ m.(*ccLibrary).primary = primary
+ if m != primary {
+ m.(*ccLibrary).properties.SkipCompileObjs = true
+ }
+ }
+ } else if _, ok := mctx.Module().(*toolchainLibrary); ok {
+ mctx.CreateLocalVariations("static")
+ }
+}