platform_build_soong/cc/library.go

3041 lines
115 KiB
Go
Raw Normal View History

// 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"
"io"
"path/filepath"
"regexp"
"strconv"
"strings"
"sync"
"android/soong/android"
"android/soong/bazel"
"android/soong/bazel/cquery"
"android/soong/cc/config"
"github.com/google/blueprint"
"github.com/google/blueprint/pathtools"
"github.com/google/blueprint/proptools"
)
// LibraryProperties is a collection of properties shared by cc library rules/cc.
type LibraryProperties struct {
// local file name to pass to the linker as -unexported_symbols_list
Unexported_symbols_list *string `android:"path,arch_variant"`
// local file name to pass to the linker as -force_symbols_not_weak_list
Force_symbols_not_weak_list *string `android:"path,arch_variant"`
// local file name to pass to the linker as -force_symbols_weak_list
Force_symbols_weak_list *string `android:"path,arch_variant"`
// rename host libraries to prevent overlap with system installed libraries
Unique_host_soname *bool
Aidl struct {
// export headers generated from .aidl sources
Export_aidl_headers *bool
}
Proto struct {
// export headers generated from .proto sources
Export_proto_headers *bool
}
Sysprop struct {
// Whether platform owns this sysprop library.
Platform *bool
} `blueprint:"mutated"`
Static_ndk_lib *bool
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
// Generate stubs to make this library accessible to APEXes.
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
Stubs struct {
// Relative path to the symbol map. The symbol map provides the list of
// symbols that are exported for stubs variant of this library.
Symbol_file *string `android:"path"`
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
// List versions to generate stubs libs for. The version name "current" is always
// implicitly added.
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
Versions []string
// Whether to not require the implementation of the library to be installed if a
// client of the stubs is installed. Defaults to true; set to false if the
// implementation is made available by some other means, e.g. in a Microdroid
// virtual machine.
Implementation_installable *bool
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
}
// set the name of the output
Stem *string `android:"arch_variant"`
// set suffix of the name of the output
Suffix *string `android:"arch_variant"`
// Properties for ABI compatibility checker.
Header_abi_checker headerAbiCheckerProperties
Target struct {
Vendor, Product struct {
// set suffix of the name of the output
Suffix *string `android:"arch_variant"`
Header_abi_checker headerAbiCheckerProperties
}
Platform struct {
Header_abi_checker headerAbiCheckerProperties
}
}
// Names of modules to be overridden. Listed modules can only be other shared libraries
// (in Make or Soong).
// This does not completely prevent installation of the overridden libraries, but if both
// binaries would be installed by default (in PRODUCT_PACKAGES) the other library will be removed
// from PRODUCT_PACKAGES.
Overrides []string
// Inject boringssl hash into the shared library. This is only intended for use by external/boringssl.
Inject_bssl_hash *bool `android:"arch_variant"`
// If this is an LLNDK library, properties to describe the LLNDK stubs. Will be copied from
// the module pointed to by llndk_stubs if it is set.
Llndk llndkLibraryProperties
// If this is a vendor public library, properties to describe the vendor public library stubs.
Vendor_public_library vendorPublicLibraryProperties
}
// StaticProperties is a properties stanza to affect only attributes of the "static" variants of a
// library module.
type StaticProperties struct {
Static StaticOrSharedProperties `android:"arch_variant"`
}
// SharedProperties is a properties stanza to affect only attributes of the "shared" variants of a
// library module.
type SharedProperties struct {
Shared StaticOrSharedProperties `android:"arch_variant"`
}
// StaticOrSharedProperties is an embedded struct representing properties to affect attributes of
// either only the "static" variants or only the "shared" variants of a library module. These override
// the base properties of the same name.
// Use `StaticProperties` or `SharedProperties`, depending on which variant is needed.
// `StaticOrSharedProperties` exists only to avoid duplication.
type StaticOrSharedProperties struct {
Srcs []string `android:"path,arch_variant"`
Tidy_disabled_srcs []string `android:"path,arch_variant"`
Tidy_timeout_srcs []string `android:"path,arch_variant"`
Sanitized Sanitized `android:"arch_variant"`
Cflags []string `android:"arch_variant"`
Enabled *bool `android:"arch_variant"`
Whole_static_libs []string `android:"arch_variant"`
Static_libs []string `android:"arch_variant"`
Shared_libs []string `android:"arch_variant"`
System_shared_libs []string `android:"arch_variant"`
Export_shared_lib_headers []string `android:"arch_variant"`
Export_static_lib_headers []string `android:"arch_variant"`
Apex_available []string `android:"arch_variant"`
Installable *bool `android:"arch_variant"`
}
type LibraryMutatedProperties struct {
// Build a static variant
BuildStatic bool `blueprint:"mutated"`
// Build a shared variant
BuildShared bool `blueprint:"mutated"`
// This variant is shared
VariantIsShared bool `blueprint:"mutated"`
// This variant is static
VariantIsStatic bool `blueprint:"mutated"`
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
// This variant is a stubs lib
BuildStubs bool `blueprint:"mutated"`
// This variant is the latest version
IsLatestVersion bool `blueprint:"mutated"`
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
// Version of the stubs lib
StubsVersion string `blueprint:"mutated"`
// List of all stubs versions associated with an implementation lib
AllStubsVersions []string `blueprint:"mutated"`
}
type FlagExporterProperties struct {
// list of directories relative to the Blueprints file that will
// be added to the include path (using -I) for this module and any module that links
// against this module. Directories listed in export_include_dirs do not need to be
// listed in local_include_dirs.
Export_include_dirs []string `android:"arch_variant,variant_prepend"`
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
// list of directories that will be added to the system include path
// using -isystem for this module and any module that links against this module.
Export_system_include_dirs []string `android:"arch_variant,variant_prepend"`
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
Target struct {
Vendor, Product struct {
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
// list of exported include directories, like
// export_include_dirs, that will be applied to
// vendor or product variant of this library.
// This will overwrite any other declarations.
Override_export_include_dirs []string
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
}
}
}
func init() {
RegisterLibraryBuildComponents(android.InitRegistrationContext)
}
func RegisterLibraryBuildComponents(ctx android.RegistrationContext) {
ctx.RegisterModuleType("cc_library_static", LibraryStaticFactory)
ctx.RegisterModuleType("cc_library_shared", LibrarySharedFactory)
ctx.RegisterModuleType("cc_library", LibraryFactory)
ctx.RegisterModuleType("cc_library_host_static", LibraryHostStaticFactory)
ctx.RegisterModuleType("cc_library_host_shared", LibraryHostSharedFactory)
}
// TODO(b/199902614): Can this be factored to share with the other Attributes?
// For bp2build conversion.
type bazelCcLibraryAttributes struct {
// Attributes pertaining to both static and shared variants.
Srcs bazel.LabelListAttribute
Srcs_c bazel.LabelListAttribute
Srcs_as bazel.LabelListAttribute
Copts bazel.StringListAttribute
Cppflags bazel.StringListAttribute
Conlyflags bazel.StringListAttribute
Asflags bazel.StringListAttribute
Hdrs bazel.LabelListAttribute
Deps bazel.LabelListAttribute
Implementation_deps bazel.LabelListAttribute
Dynamic_deps bazel.LabelListAttribute
Implementation_dynamic_deps bazel.LabelListAttribute
Whole_archive_deps bazel.LabelListAttribute
Implementation_whole_archive_deps bazel.LabelListAttribute
System_dynamic_deps bazel.LabelListAttribute
Export_includes bazel.StringListAttribute
Export_system_includes bazel.StringListAttribute
Local_includes bazel.StringListAttribute
Absolute_includes bazel.StringListAttribute
Linkopts bazel.StringListAttribute
Rtti bazel.BoolAttribute
Stl *string
Cpp_std *string
C_std *string
// This is shared only.
Additional_linker_inputs bazel.LabelListAttribute
// Common properties shared between both shared and static variants.
Shared staticOrSharedAttributes
Static staticOrSharedAttributes
Strip stripAttributes
Features bazel.StringListAttribute
}
type aidlLibraryAttributes struct {
Srcs bazel.LabelListAttribute
Include_dir *string
}
type ccAidlLibraryAttributes struct {
Deps bazel.LabelListAttribute
Implementation_dynamic_deps bazel.LabelListAttribute
}
type stripAttributes struct {
Keep_symbols bazel.BoolAttribute
Keep_symbols_and_debug_frame bazel.BoolAttribute
Keep_symbols_list bazel.StringListAttribute
All bazel.BoolAttribute
None bazel.BoolAttribute
}
func stripAttrsFromLinkerAttrs(la *linkerAttributes) stripAttributes {
return stripAttributes{
Keep_symbols: la.stripKeepSymbols,
Keep_symbols_and_debug_frame: la.stripKeepSymbolsAndDebugFrame,
Keep_symbols_list: la.stripKeepSymbolsList,
All: la.stripAll,
None: la.stripNone,
}
}
func libraryBp2Build(ctx android.TopDownMutatorContext, m *Module) {
sharedAttrs := bp2BuildParseSharedProps(ctx, m)
staticAttrs := bp2BuildParseStaticProps(ctx, m)
baseAttributes := bp2BuildParseBaseProps(ctx, m)
compilerAttrs := baseAttributes.compilerAttributes
linkerAttrs := baseAttributes.linkerAttributes
exportedIncludes := bp2BuildParseExportedIncludes(ctx, m, &compilerAttrs.includes)
srcs := compilerAttrs.srcs
sharedAttrs.Dynamic_deps.Add(baseAttributes.protoDependency)
staticAttrs.Deps.Add(baseAttributes.protoDependency)
asFlags := compilerAttrs.asFlags
if compilerAttrs.asSrcs.IsEmpty() && sharedAttrs.Srcs_as.IsEmpty() && staticAttrs.Srcs_as.IsEmpty() {
// Skip asflags for BUILD file simplicity if there are no assembly sources.
asFlags = bazel.MakeStringListAttribute(nil)
}
staticCommonAttrs := staticOrSharedAttributes{
Srcs: *srcs.Clone().Append(staticAttrs.Srcs),
Srcs_c: *compilerAttrs.cSrcs.Clone().Append(staticAttrs.Srcs_c),
Srcs_as: *compilerAttrs.asSrcs.Clone().Append(staticAttrs.Srcs_as),
Copts: *compilerAttrs.copts.Clone().Append(staticAttrs.Copts),
Hdrs: *compilerAttrs.hdrs.Clone().Append(staticAttrs.Hdrs),
Deps: *linkerAttrs.deps.Clone().Append(staticAttrs.Deps),
Implementation_deps: *linkerAttrs.implementationDeps.Clone().Append(staticAttrs.Implementation_deps),
Dynamic_deps: *linkerAttrs.dynamicDeps.Clone().Append(staticAttrs.Dynamic_deps),
Implementation_dynamic_deps: *linkerAttrs.implementationDynamicDeps.Clone().Append(staticAttrs.Implementation_dynamic_deps),
Implementation_whole_archive_deps: linkerAttrs.implementationWholeArchiveDeps,
Whole_archive_deps: *linkerAttrs.wholeArchiveDeps.Clone().Append(staticAttrs.Whole_archive_deps),
System_dynamic_deps: *linkerAttrs.systemDynamicDeps.Clone().Append(staticAttrs.System_dynamic_deps),
Runtime_deps: linkerAttrs.runtimeDeps,
sdkAttributes: bp2BuildParseSdkAttributes(m),
Native_coverage: baseAttributes.Native_coverage,
}
sharedCommonAttrs := staticOrSharedAttributes{
Srcs: *srcs.Clone().Append(sharedAttrs.Srcs),
Srcs_c: *compilerAttrs.cSrcs.Clone().Append(sharedAttrs.Srcs_c),
Srcs_as: *compilerAttrs.asSrcs.Clone().Append(sharedAttrs.Srcs_as),
Copts: *compilerAttrs.copts.Clone().Append(sharedAttrs.Copts),
Hdrs: *compilerAttrs.hdrs.Clone().Append(sharedAttrs.Hdrs),
Deps: *linkerAttrs.deps.Clone().Append(sharedAttrs.Deps),
Implementation_deps: *linkerAttrs.implementationDeps.Clone().Append(sharedAttrs.Implementation_deps),
Dynamic_deps: *linkerAttrs.dynamicDeps.Clone().Append(sharedAttrs.Dynamic_deps),
Implementation_dynamic_deps: *linkerAttrs.implementationDynamicDeps.Clone().Append(sharedAttrs.Implementation_dynamic_deps),
Whole_archive_deps: *linkerAttrs.wholeArchiveDeps.Clone().Append(sharedAttrs.Whole_archive_deps),
Implementation_whole_archive_deps: linkerAttrs.implementationWholeArchiveDeps,
System_dynamic_deps: *linkerAttrs.systemDynamicDeps.Clone().Append(sharedAttrs.System_dynamic_deps),
Runtime_deps: linkerAttrs.runtimeDeps,
sdkAttributes: bp2BuildParseSdkAttributes(m),
Native_coverage: baseAttributes.Native_coverage,
}
staticTargetAttrs := &bazelCcLibraryStaticAttributes{
staticOrSharedAttributes: staticCommonAttrs,
Cppflags: compilerAttrs.cppFlags,
Conlyflags: compilerAttrs.conlyFlags,
Asflags: asFlags,
Export_includes: exportedIncludes.Includes,
Export_absolute_includes: exportedIncludes.AbsoluteIncludes,
Export_system_includes: exportedIncludes.SystemIncludes,
Local_includes: compilerAttrs.localIncludes,
Absolute_includes: compilerAttrs.absoluteIncludes,
Rtti: compilerAttrs.rtti,
Stl: compilerAttrs.stl,
Cpp_std: compilerAttrs.cppStd,
C_std: compilerAttrs.cStd,
Features: baseAttributes.features,
}
sharedTargetAttrs := &bazelCcLibrarySharedAttributes{
staticOrSharedAttributes: sharedCommonAttrs,
Cppflags: compilerAttrs.cppFlags,
Conlyflags: compilerAttrs.conlyFlags,
Asflags: asFlags,
Export_includes: exportedIncludes.Includes,
Export_absolute_includes: exportedIncludes.AbsoluteIncludes,
Export_system_includes: exportedIncludes.SystemIncludes,
Local_includes: compilerAttrs.localIncludes,
Absolute_includes: compilerAttrs.absoluteIncludes,
Linkopts: linkerAttrs.linkopts,
Rtti: compilerAttrs.rtti,
Stl: compilerAttrs.stl,
Cpp_std: compilerAttrs.cppStd,
C_std: compilerAttrs.cStd,
Use_version_lib: linkerAttrs.useVersionLib,
Additional_linker_inputs: linkerAttrs.additionalLinkerInputs,
Strip: stripAttrsFromLinkerAttrs(&linkerAttrs),
Features: baseAttributes.features,
bazelCcHeaderAbiCheckerAttributes: bp2buildParseAbiCheckerProps(ctx, m),
Fdo_profile: compilerAttrs.fdoProfile,
}
if compilerAttrs.stubsSymbolFile != nil && len(compilerAttrs.stubsVersions.Value) > 0 {
sharedTargetAttrs.Stubs_symbol_file = compilerAttrs.stubsSymbolFile
}
sharedTargetAttrs.Suffix = compilerAttrs.suffix
for axis, configToProps := range m.GetArchVariantProperties(ctx, &LibraryProperties{}) {
for cfg, props := range configToProps {
if props, ok := props.(*LibraryProperties); ok {
if props.Inject_bssl_hash != nil {
// This is an edge case applies only to libcrypto
if m.Name() == "libcrypto" || m.Name() == "libcrypto_for_testing" {
sharedTargetAttrs.Inject_bssl_hash.SetSelectValue(axis, cfg, props.Inject_bssl_hash)
} else {
ctx.PropertyErrorf("inject_bssl_hash", "only applies to libcrypto")
}
}
}
}
}
staticProps := bazel.BazelTargetModuleProperties{
Rule_class: "cc_library_static",
Bzl_load_location: "//build/bazel/rules/cc:cc_library_static.bzl",
}
sharedProps := bazel.BazelTargetModuleProperties{
Rule_class: "cc_library_shared",
Bzl_load_location: "//build/bazel/rules/cc:cc_library_shared.bzl",
}
var tagsForStaticVariant bazel.StringListAttribute
if compilerAttrs.stubsSymbolFile == nil && len(compilerAttrs.stubsVersions.Value) == 0 {
tagsForStaticVariant = android.ApexAvailableTags(m)
}
tagsForSharedVariant := android.ApexAvailableTags(m)
ctx.CreateBazelTargetModuleWithRestrictions(staticProps,
android.CommonAttributes{
Name: m.Name() + "_bp2build_cc_library_static",
Tags: tagsForStaticVariant,
},
staticTargetAttrs, staticAttrs.Enabled)
ctx.CreateBazelTargetModuleWithRestrictions(sharedProps,
android.CommonAttributes{
Name: m.Name(),
Tags: tagsForSharedVariant,
},
sharedTargetAttrs, sharedAttrs.Enabled)
createStubsBazelTargetIfNeeded(ctx, m, compilerAttrs, exportedIncludes, baseAttributes)
}
func createStubsBazelTargetIfNeeded(ctx android.TopDownMutatorContext, m *Module, compilerAttrs compilerAttributes, exportedIncludes BazelIncludes, baseAttributes baseAttributes) {
if compilerAttrs.stubsSymbolFile != nil && len(compilerAttrs.stubsVersions.Value) > 0 {
stubSuitesProps := bazel.BazelTargetModuleProperties{
Rule_class: "cc_stub_suite",
Bzl_load_location: "//build/bazel/rules/cc:cc_stub_library.bzl",
}
soname := m.Name() + ".so"
stubSuitesAttrs := &bazelCcStubSuiteAttributes{
Symbol_file: compilerAttrs.stubsSymbolFile,
Versions: compilerAttrs.stubsVersions,
Export_includes: exportedIncludes.Includes,
Soname: &soname,
Source_library: *bazel.MakeLabelAttribute(":" + m.Name()),
Deps: baseAttributes.deps,
}
ctx.CreateBazelTargetModule(stubSuitesProps,
android.CommonAttributes{Name: m.Name() + "_stub_libs"},
stubSuitesAttrs)
// Add alias for the stub shared_library in @api_surfaces repository
currentModuleLibApiDir := ctx.Config().ApiSurfacesDir(android.ModuleLibApi, "current")
actualLabelInMainWorkspace := bazel.Label{
Label: fmt.Sprintf("@//%s:%s_stub_libs_current", ctx.ModuleDir(), m.Name()),
}
ctx.CreateBazelTargetAliasInDir(currentModuleLibApiDir, m.Name(), actualLabelInMainWorkspace)
// Add alias for headers exported by the stub library
headerLabelInMainWorkspace := bazel.Label{
// This label is generated from cc_stub_suite macro
Label: fmt.Sprintf("@//%s:%s_stub_libs_%s_headers", ctx.ModuleDir(), m.Name(), android.ModuleLibApi.String()),
}
headerAlias := m.Name() + "_headers"
ctx.CreateBazelTargetAliasInDir(currentModuleLibApiDir, headerAlias, headerLabelInMainWorkspace)
}
}
func apiContributionBp2Build(ctx android.TopDownMutatorContext, module *Module) {
apiSurfaces := make([]string, 0)
apiHeaders := make([]string, 0)
// module-libapi for apexes (non-null `stubs` property)
if module.HasStubsVariants() {
apiSurfaces = append(apiSurfaces, android.ModuleLibApi.String())
apiIncludes := getModuleLibApiIncludes(ctx, module)
if !apiIncludes.isEmpty() {
createApiHeaderTarget(ctx, apiIncludes)
apiHeaders = append(apiHeaders, apiIncludes.name)
}
}
// vendorapi (non-null `llndk` property)
if module.HasLlndkStubs() {
apiSurfaces = append(apiSurfaces, android.VendorApi.String())
apiIncludes := getVendorApiIncludes(ctx, module)
if !apiIncludes.isEmpty() {
createApiHeaderTarget(ctx, apiIncludes)
apiHeaders = append(apiHeaders, apiIncludes.name)
}
}
// create a target only if this module contributes to an api surface
// TODO: Currently this does not distinguish modulelibapi-only headers and vendrorapi-only headers
// TODO: Update so that modulelibapi-only headers do not get exported to vendorapi (and vice-versa)
if len(apiSurfaces) > 0 {
props := bazel.BazelTargetModuleProperties{
Rule_class: "cc_api_contribution",
Bzl_load_location: "//build/bazel/rules/apis:cc_api_contribution.bzl",
}
attrs := &bazelCcApiContributionAttributes{
Library_name: module.Name(),
Api_surfaces: bazel.MakeStringListAttribute(apiSurfaces),
Api: apiLabelAttribute(ctx, module),
Hdrs: bazel.MakeLabelListAttribute(
bazel.MakeLabelListFromTargetNames(apiHeaders),
),
}
ctx.CreateBazelTargetModule(
props,
android.CommonAttributes{
Name: android.ApiContributionTargetName(module.Name()),
SkipData: proptools.BoolPtr(true),
},
attrs,
)
}
}
// Native apis are versioned in a single .map.txt for all api surfaces
// Pick any one of the .map.txt files
func apiLabelAttribute(ctx android.TopDownMutatorContext, module *Module) bazel.LabelAttribute {
var apiFile *string
linker := module.linker.(*libraryDecorator)
if llndkApi := linker.Properties.Llndk.Symbol_file; llndkApi != nil {
apiFile = llndkApi
} else if moduleLibApi := linker.Properties.Stubs.Symbol_file; moduleLibApi != nil {
apiFile = moduleLibApi
} else {
ctx.ModuleErrorf("API surface library does not have any API file")
}
apiLabel := android.BazelLabelForModuleSrcSingle(ctx, proptools.String(apiFile)).Label
return *bazel.MakeLabelAttribute(apiLabel)
}
// wrapper struct to flatten the arch and os specific export_include_dirs
// flattening is necessary since we want to export apis of all arches even when we build for x86 (e.g.)
type bazelCcApiLibraryHeadersAttributes struct {
bazelCcLibraryHeadersAttributes
Arch *string
}
func (a *bazelCcApiLibraryHeadersAttributes) isEmpty() bool {
return a.Export_includes.IsEmpty() &&
a.Export_system_includes.IsEmpty() &&
a.Deps.IsEmpty()
}
type apiIncludes struct {
name string // name of the Bazel target in the generated bp2build workspace
attrs bazelCcApiLibraryHeadersAttributes
}
func (includes *apiIncludes) isEmpty() bool {
return includes.attrs.isEmpty()
}
func (includes *apiIncludes) addDep(name string) {
l := bazel.Label{Label: ":" + name}
ll := bazel.MakeLabelList([]bazel.Label{l})
lla := bazel.MakeLabelListAttribute(ll)
includes.attrs.Deps.Append(lla)
}
// includes provided to the module-lib API surface. This API surface is used by apexes.
func getModuleLibApiIncludes(ctx android.TopDownMutatorContext, c *Module) apiIncludes {
flagProps := c.library.(*libraryDecorator).flagExporter.Properties
linkProps := c.library.(*libraryDecorator).baseLinker.Properties
includes := android.FirstUniqueStrings(flagProps.Export_include_dirs)
systemIncludes := android.FirstUniqueStrings(flagProps.Export_system_include_dirs)
headerLibs := android.FirstUniqueStrings(linkProps.Export_header_lib_headers)
attrs := bazelCcLibraryHeadersAttributes{
Export_includes: bazel.MakeStringListAttribute(includes),
Export_system_includes: bazel.MakeStringListAttribute(systemIncludes),
Deps: bazel.MakeLabelListAttribute(apiHeaderLabels(ctx, headerLibs)),
}
return apiIncludes{
name: c.Name() + ".module-libapi.headers",
attrs: bazelCcApiLibraryHeadersAttributes{
bazelCcLibraryHeadersAttributes: attrs,
},
}
}
func getVendorApiIncludes(ctx android.TopDownMutatorContext, c *Module) apiIncludes {
baseProps := c.library.(*libraryDecorator).flagExporter.Properties
llndkProps := c.library.(*libraryDecorator).Properties.Llndk
includes := baseProps.Export_include_dirs
systemIncludes := baseProps.Export_system_include_dirs
// LLNDK can override the base includes
if llndkIncludes := llndkProps.Override_export_include_dirs; llndkIncludes != nil {
includes = llndkIncludes
}
if proptools.Bool(llndkProps.Export_headers_as_system) {
systemIncludes = append(systemIncludes, includes...)
includes = nil
}
attrs := bazelCcLibraryHeadersAttributes{
Export_includes: bazel.MakeStringListAttribute(includes),
Export_system_includes: bazel.MakeStringListAttribute(systemIncludes),
Deps: bazel.MakeLabelListAttribute(apiHeaderLabels(ctx, llndkProps.Export_llndk_headers)),
}
return apiIncludes{
name: c.Name() + ".vendorapi.headers",
attrs: bazelCcApiLibraryHeadersAttributes{
bazelCcLibraryHeadersAttributes: attrs,
},
}
}
// cc_library creates both static and/or shared libraries for a device and/or
// host. By default, a cc_library has a single variant that targets the device.
// Specifying `host_supported: true` also creates a library that targets the
// host.
func LibraryFactory() android.Module {
module, _ := NewLibrary(android.HostAndDeviceSupported)
// Can be used as both a static and a shared library.
module.sdkMemberTypes = []android.SdkMemberType{
sharedLibrarySdkMemberType,
staticLibrarySdkMemberType,
staticAndSharedLibrarySdkMemberType,
}
module.bazelable = true
module.bazelHandler = &ccLibraryBazelHandler{module: module}
return module.Init()
}
// cc_library_static creates a static library for a device and/or host binary.
func LibraryStaticFactory() android.Module {
module, library := NewLibrary(android.HostAndDeviceSupported)
library.BuildOnlyStatic()
module.sdkMemberTypes = []android.SdkMemberType{staticLibrarySdkMemberType}
module.bazelable = true
module.bazelHandler = &ccLibraryBazelHandler{module: module}
return module.Init()
}
// cc_library_shared creates a shared library for a device and/or host.
func LibrarySharedFactory() android.Module {
module, library := NewLibrary(android.HostAndDeviceSupported)
library.BuildOnlyShared()
module.sdkMemberTypes = []android.SdkMemberType{sharedLibrarySdkMemberType}
module.bazelable = true
module.bazelHandler = &ccLibraryBazelHandler{module: module}
return module.Init()
}
// cc_library_host_static creates a static library that is linkable to a host
// binary.
func LibraryHostStaticFactory() android.Module {
module, library := NewLibrary(android.HostSupported)
library.BuildOnlyStatic()
module.sdkMemberTypes = []android.SdkMemberType{staticLibrarySdkMemberType}
module.bazelable = true
module.bazelHandler = &ccLibraryBazelHandler{module: module}
return module.Init()
}
// cc_library_host_shared creates a shared library that is usable on a host.
func LibraryHostSharedFactory() android.Module {
module, library := NewLibrary(android.HostSupported)
library.BuildOnlyShared()
module.sdkMemberTypes = []android.SdkMemberType{sharedLibrarySdkMemberType}
module.bazelable = true
module.bazelHandler = &ccLibraryBazelHandler{module: module}
return module.Init()
}
// flagExporter is a separated portion of libraryDecorator pertaining to exported
// include paths and flags. Keeping this dependency-related information separate
// from the rest of library information is helpful in keeping data more structured
// and explicit.
type flagExporter struct {
Properties FlagExporterProperties
dirs android.Paths // Include directories to be included with -I
systemDirs android.Paths // System include directories to be included with -isystem
flags []string // Exported raw flags.
deps android.Paths
headers android.Paths
}
// exportedIncludes returns the effective include paths for this module and
// any module that links against this module. This is obtained from
// the export_include_dirs property in the appropriate target stanza.
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
func (f *flagExporter) exportedIncludes(ctx ModuleContext) android.Paths {
if ctx.inVendor() && f.Properties.Target.Vendor.Override_export_include_dirs != nil {
return android.PathsForModuleSrc(ctx, f.Properties.Target.Vendor.Override_export_include_dirs)
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
}
if ctx.inProduct() && f.Properties.Target.Product.Override_export_include_dirs != nil {
return android.PathsForModuleSrc(ctx, f.Properties.Target.Product.Override_export_include_dirs)
}
return android.PathsForModuleSrc(ctx, f.Properties.Export_include_dirs)
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
}
// exportIncludes registers the include directories and system include directories to be exported
// transitively to modules depending on this module.
func (f *flagExporter) exportIncludes(ctx ModuleContext) {
f.dirs = append(f.dirs, f.exportedIncludes(ctx)...)
f.systemDirs = append(f.systemDirs, android.PathsForModuleSrc(ctx, f.Properties.Export_system_include_dirs)...)
}
// exportIncludesAsSystem registers the include directories and system include directories to be
// exported transitively both as system include directories to modules depending on this module.
func (f *flagExporter) exportIncludesAsSystem(ctx ModuleContext) {
// all dirs are force exported as system
f.systemDirs = append(f.systemDirs, f.exportedIncludes(ctx)...)
f.systemDirs = append(f.systemDirs, android.PathsForModuleSrc(ctx, f.Properties.Export_system_include_dirs)...)
}
// reexportDirs registers the given directories as include directories to be exported transitively
// to modules depending on this module.
func (f *flagExporter) reexportDirs(dirs ...android.Path) {
f.dirs = append(f.dirs, dirs...)
}
// reexportSystemDirs registers the given directories as system include directories
// to be exported transitively to modules depending on this module.
func (f *flagExporter) reexportSystemDirs(dirs ...android.Path) {
f.systemDirs = append(f.systemDirs, dirs...)
}
// reexportFlags registers the flags to be exported transitively to modules depending on this
// module.
func (f *flagExporter) reexportFlags(flags ...string) {
if android.PrefixInList(flags, "-I") || android.PrefixInList(flags, "-isystem") {
panic(fmt.Errorf("Exporting invalid flag %q: "+
"use reexportDirs or reexportSystemDirs to export directories", flag))
}
f.flags = append(f.flags, flags...)
}
func (f *flagExporter) reexportDeps(deps ...android.Path) {
f.deps = append(f.deps, deps...)
}
// addExportedGeneratedHeaders does nothing but collects generated header files.
// This can be differ to exportedDeps which may contain phony files to minimize ninja.
func (f *flagExporter) addExportedGeneratedHeaders(headers ...android.Path) {
f.headers = append(f.headers, headers...)
}
func (f *flagExporter) setProvider(ctx android.ModuleContext) {
ctx.SetProvider(FlagExporterInfoProvider, FlagExporterInfo{
// Comes from Export_include_dirs property, and those of exported transitive deps
IncludeDirs: android.FirstUniquePaths(f.dirs),
// Comes from Export_system_include_dirs property, and those of exported transitive deps
SystemIncludeDirs: android.FirstUniquePaths(f.systemDirs),
// Used in very few places as a one-off way of adding extra defines.
Flags: f.flags,
// Used sparingly, for extra files that need to be explicitly exported to dependers,
// or for phony files to minimize ninja.
Deps: f.deps,
// For exported generated headers, such as exported aidl headers, proto headers, or
// sysprop headers.
GeneratedHeaders: f.headers,
})
}
// libraryDecorator wraps baseCompiler, baseLinker and baseInstaller to provide library-specific
// functionality: static vs. shared linkage, reusing object files for shared libraries
type libraryDecorator struct {
Properties LibraryProperties
StaticProperties StaticProperties
SharedProperties SharedProperties
MutatedProperties LibraryMutatedProperties
// For reusing static library objects for shared library
reuseObjects Objects
// table-of-contents file to optimize out relinking when possible
tocFile android.OptionalPath
flagExporter
flagExporterInfo *FlagExporterInfo
stripper Stripper
// For whole_static_libs
objects Objects
wholeStaticLibsFromPrebuilts android.Paths
// Uses the module's name if empty, but can be overridden. Does not include
// shlib suffix.
libName string
sabi *sabi
// Output archive of gcno coverage information files
coverageOutputFile android.OptionalPath
// linked Source Abi Dump
sAbiOutputFile android.OptionalPath
// Source Abi Diff
sAbiDiff android.Paths
// Location of the static library in the sysroot. Empty if the library is
// not included in the NDK.
ndkSysrootPath android.Path
// Location of the linked, unstripped library for shared libraries
unstrippedOutputFile android.Path
// Location of the file that should be copied to dist dir when requested
distFile android.Path
versionScriptPath android.OptionalPath
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
postInstallCmds []string
// If useCoreVariant is true, the vendor variant of a VNDK library is
// not installed.
useCoreVariant bool
checkSameCoreVariant bool
skipAPIDefine bool
// Decorated interfaces
*baseCompiler
*baseLinker
*baseInstaller
collectedSnapshotHeaders android.Paths
apiListCoverageXmlPath android.ModuleOutPath
}
type ccLibraryBazelHandler struct {
module *Module
}
var _ BazelHandler = (*ccLibraryBazelHandler)(nil)
// generateStaticBazelBuildActions constructs the StaticLibraryInfo Soong
// provider from a Bazel shared library's CcInfo provider.
func (handler *ccLibraryBazelHandler) generateStaticBazelBuildActions(ctx android.ModuleContext, label string, ccInfo cquery.CcInfo) {
rootStaticArchives := ccInfo.RootStaticArchives
if len(rootStaticArchives) != 1 {
ctx.ModuleErrorf("expected exactly one root archive file for '%s', but got %s", label, rootStaticArchives)
return
}
var outputFilePath android.Path = android.PathForBazelOut(ctx, rootStaticArchives[0])
if len(ccInfo.TidyFiles) > 0 {
handler.module.tidyFiles = android.PathsForBazelOut(ctx, ccInfo.TidyFiles)
outputFilePath = android.AttachValidationActions(ctx, outputFilePath, handler.module.tidyFiles)
}
handler.module.outputFile = android.OptionalPathForPath(outputFilePath)
objPaths := ccInfo.CcObjectFiles
objFiles := make(android.Paths, len(objPaths))
for i, objPath := range objPaths {
objFiles[i] = android.PathForBazelOut(ctx, objPath)
}
objects := Objects{
objFiles: objFiles,
}
ctx.SetProvider(StaticLibraryInfoProvider, StaticLibraryInfo{
StaticLibrary: outputFilePath,
ReuseObjects: objects,
Objects: objects,
// TODO(b/190524881): Include transitive static libraries in this provider to support
// static libraries with deps.
TransitiveStaticLibrariesForOrdering: android.NewDepSetBuilder(android.TOPOLOGICAL).
Direct(outputFilePath).
Build(),
})
return
}
// generateSharedBazelBuildActions constructs the SharedLibraryInfo Soong
// provider from a Bazel shared library's CcInfo provider.
func (handler *ccLibraryBazelHandler) generateSharedBazelBuildActions(ctx android.ModuleContext, label string, ccInfo cquery.CcInfo) {
rootDynamicLibraries := ccInfo.RootDynamicLibraries
if len(rootDynamicLibraries) != 1 {
ctx.ModuleErrorf("expected exactly one root dynamic library file for '%s', but got %s", label, rootDynamicLibraries)
return
}
var outputFilePath android.Path = android.PathForBazelOut(ctx, rootDynamicLibraries[0])
if len(ccInfo.TidyFiles) > 0 {
handler.module.tidyFiles = android.PathsForBazelOut(ctx, ccInfo.TidyFiles)
outputFilePath = android.AttachValidationActions(ctx, outputFilePath, handler.module.tidyFiles)
}
handler.module.outputFile = android.OptionalPathForPath(outputFilePath)
handler.module.linker.(*libraryDecorator).unstrippedOutputFile = android.PathForBazelOut(ctx, ccInfo.UnstrippedOutput)
var tocFile android.OptionalPath
if len(ccInfo.TocFile) > 0 {
tocFile = android.OptionalPathForPath(android.PathForBazelOut(ctx, ccInfo.TocFile))
}
handler.module.linker.(*libraryDecorator).tocFile = tocFile
if len(ccInfo.AbiDiffFiles) > 0 {
handler.module.linker.(*libraryDecorator).sAbiDiff = android.PathsForBazelOut(ctx, ccInfo.AbiDiffFiles)
}
ctx.SetProvider(SharedLibraryInfoProvider, SharedLibraryInfo{
TableOfContents: tocFile,
SharedLibrary: outputFilePath,
Target: ctx.Target(),
// TODO(b/190524881): Include transitive static libraries in this provider to support
// static libraries with deps. The provider key for this is TransitiveStaticLibrariesForOrdering.
})
}
func (handler *ccLibraryBazelHandler) QueueBazelCall(ctx android.BaseModuleContext, label string) {
bazelCtx := ctx.Config().BazelContext
bazelCtx.QueueBazelRequest(label, cquery.GetCcInfo, android.GetConfigKeyApexVariant(ctx, GetApexConfigKey(ctx)))
}
func (handler *ccLibraryBazelHandler) ProcessBazelQueryResponse(ctx android.ModuleContext, label string) {
bazelCtx := ctx.Config().BazelContext
ccInfo, err := bazelCtx.GetCcInfo(label, android.GetConfigKeyApexVariant(ctx, GetApexConfigKey(ctx)))
if err != nil {
ctx.ModuleErrorf("Error getting Bazel CcInfo: %s", err)
return
}
if handler.module.static() {
handler.generateStaticBazelBuildActions(ctx, label, ccInfo)
} else if handler.module.Shared() {
handler.generateSharedBazelBuildActions(ctx, label, ccInfo)
} else {
ctx.ModuleErrorf("Unhandled bazel case for %s (neither shared nor static!)", ctx.ModuleName())
}
handler.module.linker.(*libraryDecorator).setFlagExporterInfoFromCcInfo(ctx, ccInfo)
handler.module.maybeUnhideFromMake()
if i, ok := handler.module.linker.(snapshotLibraryInterface); ok {
// Dependencies on this library will expect collectedSnapshotHeaders to
// be set, otherwise validation will fail. For now, set this to an empty
// list.
// TODO(b/190533363): More closely mirror the collectHeadersForSnapshot
// implementation.
i.(*libraryDecorator).collectedSnapshotHeaders = android.Paths{}
}
handler.module.setAndroidMkVariablesFromCquery(ccInfo.CcAndroidMkInfo)
}
func (library *libraryDecorator) setFlagExporterInfoFromCcInfo(ctx android.ModuleContext, ccInfo cquery.CcInfo) {
flagExporterInfo := flagExporterInfoFromCcInfo(ctx, ccInfo)
// flag exporters consolidates properties like includes, flags, dependencies that should be
// exported from this module to other modules
ctx.SetProvider(FlagExporterInfoProvider, flagExporterInfo)
// Store flag info to be passed along to androidmk
// TODO(b/184387147): Androidmk should be done in Bazel, not Soong.
library.flagExporterInfo = &flagExporterInfo
}
func GlobHeadersForSnapshot(ctx android.ModuleContext, paths android.Paths) android.Paths {
ret := android.Paths{}
// Headers in the source tree should be globbed. On the contrast, generated headers
// can't be globbed, and they should be manually collected.
// So, we first filter out intermediate directories (which contains generated headers)
// from exported directories, and then glob headers under remaining directories.
for _, path := range paths {
dir := path.String()
// Skip if dir is for generated headers
if strings.HasPrefix(dir, ctx.Config().OutDir()) {
continue
}
// Filter out the generated headers from bazel.
if strings.HasPrefix(dir, android.PathForBazelOut(ctx, "bazel-out").String()) {
continue
}
// libeigen wrongly exports the root directory "external/eigen". But only two
// subdirectories "Eigen" and "unsupported" contain exported header files. Even worse
// some of them have no extension. So we need special treatment for libeigen in order
// to glob correctly.
if dir == "external/eigen" {
// Only these two directories contains exported headers.
for _, subdir := range []string{"Eigen", "unsupported/Eigen"} {
globDir := "external/eigen/" + subdir + "/**/*"
glob, err := ctx.GlobWithDeps(globDir, nil)
if err != nil {
ctx.ModuleErrorf("glob of %q failed: %s", globDir, err)
return nil
}
for _, header := range glob {
if strings.HasSuffix(header, "/") {
continue
}
ext := filepath.Ext(header)
if ext != "" && ext != ".h" {
continue
}
ret = append(ret, android.PathForSource(ctx, header))
}
}
continue
}
globDir := dir + "/**/*"
glob, err := ctx.GlobWithDeps(globDir, nil)
if err != nil {
ctx.ModuleErrorf("glob of %q failed: %s", globDir, err)
return nil
}
isLibcxx := strings.HasPrefix(dir, "external/libcxx/include")
for _, header := range glob {
if isLibcxx {
// Glob all files under this special directory, because of C++ headers with no
// extension.
if strings.HasSuffix(header, "/") {
continue
}
} else {
// Filter out only the files with extensions that are headers.
found := false
for _, ext := range HeaderExts {
if strings.HasSuffix(header, ext) {
found = true
break
}
}
if !found {
continue
}
}
ret = append(ret, android.PathForSource(ctx, header))
}
}
return ret
}
func GlobGeneratedHeadersForSnapshot(_ android.ModuleContext, paths android.Paths) android.Paths {
ret := android.Paths{}
for _, header := range paths {
// TODO(b/148123511): remove exportedDeps after cleaning up genrule
if strings.HasSuffix(header.Base(), "-phony") {
continue
}
ret = append(ret, header)
}
return ret
}
// collectHeadersForSnapshot collects all exported headers from library.
// It globs header files in the source tree for exported include directories,
// and tracks generated header files separately.
//
// This is to be called from GenerateAndroidBuildActions, and then collected
// header files can be retrieved by snapshotHeaders().
func (l *libraryDecorator) collectHeadersForSnapshot(ctx android.ModuleContext) {
ret := android.Paths{}
// Headers in the source tree should be globbed. On the contrast, generated headers
// can't be globbed, and they should be manually collected.
// So, we first filter out intermediate directories (which contains generated headers)
// from exported directories, and then glob headers under remaining directories.
ret = append(ret, GlobHeadersForSnapshot(ctx, append(android.CopyOfPaths(l.flagExporter.dirs), l.flagExporter.systemDirs...))...)
// Collect generated headers
ret = append(ret, GlobGeneratedHeadersForSnapshot(ctx, append(android.CopyOfPaths(l.flagExporter.headers), l.flagExporter.deps...))...)
l.collectedSnapshotHeaders = ret
}
// This returns all exported header files, both generated ones and headers from source tree.
// collectHeadersForSnapshot() must be called before calling this.
func (l *libraryDecorator) snapshotHeaders() android.Paths {
if l.collectedSnapshotHeaders == nil {
panic("snapshotHeaders() must be called after collectHeadersForSnapshot()")
}
return l.collectedSnapshotHeaders
}
// linkerProps returns the list of properties structs relevant for this library. (For example, if
// the library is cc_shared_library, then static-library properties are omitted.)
func (library *libraryDecorator) linkerProps() []interface{} {
var props []interface{}
props = append(props, library.baseLinker.linkerProps()...)
props = append(props,
&library.Properties,
&library.MutatedProperties,
&library.flagExporter.Properties,
&library.stripper.StripProperties)
if library.MutatedProperties.BuildShared {
props = append(props, &library.SharedProperties)
}
if library.MutatedProperties.BuildStatic {
props = append(props, &library.StaticProperties)
}
return props
}
// linkerFlags takes a Flags struct and augments it to contain linker flags that are defined by this
// library, or that are implied by attributes of this library (such as whether this library is a
// shared library).
func (library *libraryDecorator) linkerFlags(ctx ModuleContext, flags Flags) Flags {
flags = library.baseLinker.linkerFlags(ctx, flags)
// MinGW spits out warnings about -fPIC even for -fpie?!) being ignored because
// all code is position independent, and then those warnings get promoted to
// errors.
if !ctx.Windows() {
flags.Global.CFlags = append(flags.Global.CFlags, "-fPIC")
}
if library.static() {
flags.Local.CFlags = append(flags.Local.CFlags, library.StaticProperties.Static.Cflags...)
} else if library.shared() {
flags.Local.CFlags = append(flags.Local.CFlags, library.SharedProperties.Shared.Cflags...)
}
if library.shared() {
libName := library.getLibName(ctx)
var f []string
if ctx.toolchain().Bionic() {
f = append(f,
"-nostdlib",
"-Wl,--gc-sections",
)
}
if ctx.Darwin() {
f = append(f,
"-dynamiclib",
"-install_name @rpath/"+libName+flags.Toolchain.ShlibSuffix(),
)
if ctx.Arch().ArchType == android.X86 {
f = append(f,
"-read_only_relocs suppress",
)
}
} else {
f = append(f, "-shared")
if !ctx.Windows() {
f = append(f, "-Wl,-soname,"+libName+flags.Toolchain.ShlibSuffix())
}
}
flags.Global.LdFlags = append(flags.Global.LdFlags, f...)
}
return flags
}
// compilerFlags takes a Flags and augments it to contain compile flags from global values,
// per-target values, module type values, per-module Blueprints properties, extra flags from
// `flags`, and generated sources from `deps`.
func (library *libraryDecorator) compilerFlags(ctx ModuleContext, flags Flags, deps PathDeps) Flags {
Split /system and /vendor modules, allow multi-installation Nothing changes if BOARD_VNDK_VERSION isn't set. When the VNDK is enabled (BOARD_VNDK_VERSION in Make), this will split /system and /vendor modules into two different variant spaces that can't link to each other. There are a few interfaces between the two variant spaces: The `llndk_library` stubs will be available in the /vendor variant, but won't be installed, so at runtime the /system variant will be used. Setting `vendor_available: true` will split a module into both variants. The /system (or "core") variant will compile just like today. The /vendor ("vendor") variant will compile against everything else in the vendor space (so LL-NDK instead of libc/liblog/etc). There will be two copies of these libraries installed onto the final device. Since the available runtime interfaces for vendor modules may be reduced, and your dependencies may not expose their private interfaces, we allow the vendor variants to reduce their compilation set, and export a different set of headers: cc_library { name: "libfoo", srcs: ["common.cpp", "private_impl.cpp"], export_include_dirs: ["include"], target: { vendor: { export_include_dirs: ["include_vndk"], exclude_srcs: ["private_impl.cpp"], srcs: ["vendor_only.cpp"], }, }, } So the "core" variant would compile with both "common.cpp" and "private_impl.cpp", and export "include". The "vendor" variant would compile "common.cpp" and "vendor_only.cpp", and export "include_vndk". Bug: 36426473 Bug: 36079834 Test: out/soong/build.ninja, out/soong/Android- only changes due to _core addition and .llndk -> .vendor Test: attempt to compile with BOARD_VNDK_VERSION:=current Change-Id: Idef28764043bf6c33dc0d2e7e2026c38867ff769
2017-04-06 21:43:22 +02:00
exportIncludeDirs := library.flagExporter.exportedIncludes(ctx)
if len(exportIncludeDirs) > 0 {
f := includeDirsToFlags(exportIncludeDirs)
flags.Local.CommonFlags = append(flags.Local.CommonFlags, f)
flags.Local.YasmFlags = append(flags.Local.YasmFlags, f)
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
flags = library.baseCompiler.compilerFlags(ctx, flags, deps)
if ctx.IsLlndk() {
// LLNDK libraries ignore most of the properties on the cc_library and use the
// LLNDK-specific properties instead.
// Wipe all the module-local properties, leaving only the global properties.
flags.Local = LocalOrGlobalFlags{}
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
if library.buildStubs() {
// Remove -include <file> when compiling stubs. Otherwise, the force included
// headers might cause conflicting types error with the symbols in the
// generated stubs source code. e.g.
// double acos(double); // in header
// void acos() {} // in the generated source code
removeInclude := func(flags []string) []string {
ret := flags[:0]
for _, f := range flags {
if strings.HasPrefix(f, "-include ") {
continue
}
ret = append(ret, f)
}
return ret
}
flags.Local.CommonFlags = removeInclude(flags.Local.CommonFlags)
flags.Local.CFlags = removeInclude(flags.Local.CFlags)
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
flags = addStubLibraryCompilerFlags(flags)
}
return flags
}
func (library *libraryDecorator) getHeaderAbiCheckerProperties(ctx android.BaseModuleContext) headerAbiCheckerProperties {
m := ctx.Module().(*Module)
variantProps := &library.Properties.Target.Platform.Header_abi_checker
if m.InVendor() {
variantProps = &library.Properties.Target.Vendor.Header_abi_checker
} else if m.InProduct() {
variantProps = &library.Properties.Target.Product.Header_abi_checker
}
props := library.Properties.Header_abi_checker
err := proptools.AppendProperties(&props, variantProps, nil)
if err != nil {
ctx.ModuleErrorf("Cannot merge headerAbiCheckerProperties: %s", err.Error())
}
return props
}
func (library *libraryDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) Objects {
if ctx.IsLlndk() {
// This is the vendor variant of an LLNDK library, build the LLNDK stubs.
vndkVer := ctx.Module().(*Module).VndkVersion()
if !inList(vndkVer, ctx.Config().PlatformVersionActiveCodenames()) || vndkVer == "" {
// For non-enforcing devices, vndkVer is empty. Use "current" in that case, too.
vndkVer = "current"
}
if library.stubsVersion() != "" {
vndkVer = library.stubsVersion()
}
nativeAbiResult := parseNativeAbiDefinition(ctx,
String(library.Properties.Llndk.Symbol_file),
android.ApiLevelOrPanic(ctx, vndkVer), "--llndk")
objs := compileStubLibrary(ctx, flags, nativeAbiResult.stubSrc)
if !Bool(library.Properties.Llndk.Unversioned) {
library.versionScriptPath = android.OptionalPathForPath(
nativeAbiResult.versionScript)
}
return objs
}
if ctx.IsVendorPublicLibrary() {
nativeAbiResult := parseNativeAbiDefinition(ctx,
String(library.Properties.Vendor_public_library.Symbol_file),
android.FutureApiLevel, "")
objs := compileStubLibrary(ctx, flags, nativeAbiResult.stubSrc)
if !Bool(library.Properties.Vendor_public_library.Unversioned) {
library.versionScriptPath = android.OptionalPathForPath(nativeAbiResult.versionScript)
}
return objs
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
if library.buildStubs() {
symbolFile := String(library.Properties.Stubs.Symbol_file)
if symbolFile != "" && !strings.HasSuffix(symbolFile, ".map.txt") {
ctx.PropertyErrorf("symbol_file", "%q doesn't have .map.txt suffix", symbolFile)
return Objects{}
}
// b/239274367 --apex and --systemapi filters symbols tagged with # apex and #
// systemapi, respectively. The former is for symbols defined in platform libraries
// and the latter is for symbols defined in APEXes.
// A single library can contain either # apex or # systemapi, but not both.
// The stub generator (ndkstubgen) is additive, so passing _both_ of these to it should be a no-op.
// However, having this distinction helps guard accidental
// promotion or demotion of API and also helps the API review process b/191371676
var flag string
if ctx.Module().(android.ApexModule).NotInPlatform() {
flag = "--apex"
} else {
flag = "--systemapi"
}
// b/184712170, unless the lib is an NDK library, exclude all public symbols from
// the stub so that it is mandated that all symbols are explicitly marked with
// either apex or systemapi.
if !ctx.Module().(*Module).IsNdk(ctx.Config()) {
flag = flag + " --no-ndk"
}
nativeAbiResult := parseNativeAbiDefinition(ctx, symbolFile,
android.ApiLevelOrPanic(ctx, library.MutatedProperties.StubsVersion), flag)
objs := compileStubLibrary(ctx, flags, nativeAbiResult.stubSrc)
library.versionScriptPath = android.OptionalPathForPath(
nativeAbiResult.versionScript)
// Parse symbol file to get API list for coverage
if library.stubsVersion() == "current" && ctx.PrimaryArch() && !ctx.inRecovery() && !ctx.inProduct() && !ctx.inVendor() {
library.apiListCoverageXmlPath = parseSymbolFileForAPICoverage(ctx, symbolFile)
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
return objs
}
if !library.buildShared() && !library.buildStatic() {
if len(library.baseCompiler.Properties.Srcs) > 0 {
ctx.PropertyErrorf("srcs", "cc_library_headers must not have any srcs")
}
if len(library.StaticProperties.Static.Srcs) > 0 {
ctx.PropertyErrorf("static.srcs", "cc_library_headers must not have any srcs")
}
if len(library.SharedProperties.Shared.Srcs) > 0 {
ctx.PropertyErrorf("shared.srcs", "cc_library_headers must not have any srcs")
}
return Objects{}
}
if library.sabi.shouldCreateSourceAbiDump() {
exportIncludeDirs := library.flagExporter.exportedIncludes(ctx)
var SourceAbiFlags []string
for _, dir := range exportIncludeDirs.Strings() {
SourceAbiFlags = append(SourceAbiFlags, "-I"+dir)
}
for _, reexportedInclude := range library.sabi.Properties.ReexportedIncludes {
SourceAbiFlags = append(SourceAbiFlags, "-I"+reexportedInclude)
}
flags.SAbiFlags = SourceAbiFlags
totalLength := len(library.baseCompiler.Properties.Srcs) + len(deps.GeneratedSources) +
len(library.SharedProperties.Shared.Srcs) + len(library.StaticProperties.Static.Srcs)
if totalLength > 0 {
flags.SAbiDump = true
}
}
objs := library.baseCompiler.compile(ctx, flags, deps)
library.reuseObjects = objs
buildFlags := flagsToBuilderFlags(flags)
if library.static() {
srcs := android.PathsForModuleSrc(ctx, library.StaticProperties.Static.Srcs)
objs = objs.Append(compileObjs(ctx, buildFlags, android.DeviceStaticLibrary, srcs,
android.PathsForModuleSrc(ctx, library.StaticProperties.Static.Tidy_disabled_srcs),
android.PathsForModuleSrc(ctx, library.StaticProperties.Static.Tidy_timeout_srcs),
library.baseCompiler.pathDeps, library.baseCompiler.cFlagsDeps))
} else if library.shared() {
srcs := android.PathsForModuleSrc(ctx, library.SharedProperties.Shared.Srcs)
objs = objs.Append(compileObjs(ctx, buildFlags, android.DeviceSharedLibrary, srcs,
android.PathsForModuleSrc(ctx, library.SharedProperties.Shared.Tidy_disabled_srcs),
android.PathsForModuleSrc(ctx, library.SharedProperties.Shared.Tidy_timeout_srcs),
library.baseCompiler.pathDeps, library.baseCompiler.cFlagsDeps))
}
return objs
}
type libraryInterface interface {
versionedInterface
static() bool
shared() bool
objs() Objects
reuseObjs() Objects
toc() android.OptionalPath
// Returns true if the build options for the module have selected a static or shared build
buildStatic() bool
buildShared() bool
// Sets whether a specific variant is static or shared
setStatic()
setShared()
// Gets the ABI properties for vendor, product, or platform variant
getHeaderAbiCheckerProperties(ctx android.BaseModuleContext) headerAbiCheckerProperties
// Write LOCAL_ADDITIONAL_DEPENDENCIES for ABI diff
androidMkWriteAdditionalDependenciesForSourceAbiDiff(w io.Writer)
availableFor(string) bool
getAPIListCoverageXMLPath() android.ModuleOutPath
installable() *bool
}
type versionedInterface interface {
buildStubs() bool
setBuildStubs(isLatest bool)
hasStubsVariants() bool
isStubsImplementationRequired() bool
setStubsVersion(string)
stubsVersion() string
stubsVersions(ctx android.BaseMutatorContext) []string
setAllStubsVersions([]string)
allStubsVersions() []string
implementationModuleName(name string) string
hasLLNDKStubs() bool
hasLLNDKHeaders() bool
hasVendorPublicLibrary() bool
}
var _ libraryInterface = (*libraryDecorator)(nil)
var _ versionedInterface = (*libraryDecorator)(nil)
func (library *libraryDecorator) getLibNameHelper(baseModuleName string, inVendor bool, inProduct bool) string {
name := library.libName
if name == "" {
name = String(library.Properties.Stem)
if name == "" {
name = baseModuleName
}
}
suffix := ""
if inVendor {
suffix = String(library.Properties.Target.Vendor.Suffix)
} else if inProduct {
suffix = String(library.Properties.Target.Product.Suffix)
}
if suffix == "" {
suffix = String(library.Properties.Suffix)
}
return name + suffix
}
// getLibName returns the actual canonical name of the library (the name which
// should be passed to the linker via linker flags).
func (library *libraryDecorator) getLibName(ctx BaseModuleContext) string {
name := library.getLibNameHelper(ctx.baseModuleName(), ctx.inVendor(), ctx.inProduct())
if ctx.IsVndkExt() {
// vndk-ext lib should have the same name with original lib
ctx.VisitDirectDepsWithTag(vndkExtDepTag, func(module android.Module) {
originalName := module.(*Module).outputFile.Path()
name = strings.TrimSuffix(originalName.Base(), originalName.Ext())
})
}
if ctx.Host() && Bool(library.Properties.Unique_host_soname) {
if !strings.HasSuffix(name, "-host") {
name = name + "-host"
}
}
return name
}
var versioningMacroNamesListMutex sync.Mutex
func (library *libraryDecorator) linkerInit(ctx BaseModuleContext) {
location := InstallInSystem
if library.baseLinker.sanitize.inSanitizerDir() {
location = InstallInSanitizerDir
}
library.baseInstaller.location = location
library.baseLinker.linkerInit(ctx)
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
// Let baseLinker know whether this variant is for stubs or not, so that
// it can omit things that are not required for linking stubs.
library.baseLinker.dynamicProperties.BuildStubs = library.buildStubs()
if library.buildStubs() {
macroNames := versioningMacroNamesList(ctx.Config())
myName := versioningMacroName(ctx.ModuleName())
versioningMacroNamesListMutex.Lock()
defer versioningMacroNamesListMutex.Unlock()
if (*macroNames)[myName] == "" {
(*macroNames)[myName] = ctx.ModuleName()
} else if (*macroNames)[myName] != ctx.ModuleName() {
ctx.ModuleErrorf("Macro name %q for versioning conflicts with macro name from module %q ", myName, (*macroNames)[myName])
}
}
}
func (library *libraryDecorator) compilerDeps(ctx DepsContext, deps Deps) Deps {
if ctx.IsLlndk() {
// LLNDK libraries ignore most of the properties on the cc_library and use the
// LLNDK-specific properties instead.
return deps
}
deps = library.baseCompiler.compilerDeps(ctx, deps)
return deps
}
func (library *libraryDecorator) linkerDeps(ctx DepsContext, deps Deps) Deps {
if ctx.IsLlndk() {
// LLNDK libraries ignore most of the properties on the cc_library and use the
// LLNDK-specific properties instead.
deps.HeaderLibs = append([]string(nil), library.Properties.Llndk.Export_llndk_headers...)
deps.ReexportHeaderLibHeaders = append([]string(nil), library.Properties.Llndk.Export_llndk_headers...)
return deps
}
if ctx.IsVendorPublicLibrary() {
headers := library.Properties.Vendor_public_library.Export_public_headers
deps.HeaderLibs = append([]string(nil), headers...)
deps.ReexportHeaderLibHeaders = append([]string(nil), headers...)
return deps
}
if library.static() {
// Compare with nil because an empty list needs to be propagated.
if library.StaticProperties.Static.System_shared_libs != nil {
library.baseLinker.Properties.System_shared_libs = library.StaticProperties.Static.System_shared_libs
}
} else if library.shared() {
// Compare with nil because an empty list needs to be propagated.
if library.SharedProperties.Shared.System_shared_libs != nil {
library.baseLinker.Properties.System_shared_libs = library.SharedProperties.Shared.System_shared_libs
}
}
deps = library.baseLinker.linkerDeps(ctx, deps)
if library.static() {
deps.WholeStaticLibs = append(deps.WholeStaticLibs,
library.StaticProperties.Static.Whole_static_libs...)
deps.StaticLibs = append(deps.StaticLibs, library.StaticProperties.Static.Static_libs...)
deps.SharedLibs = append(deps.SharedLibs, library.StaticProperties.Static.Shared_libs...)
deps.ReexportSharedLibHeaders = append(deps.ReexportSharedLibHeaders, library.StaticProperties.Static.Export_shared_lib_headers...)
deps.ReexportStaticLibHeaders = append(deps.ReexportStaticLibHeaders, library.StaticProperties.Static.Export_static_lib_headers...)
} else if library.shared() {
if library.baseLinker.Properties.crt() {
deps.CrtBegin = append(deps.CrtBegin, ctx.toolchain().CrtBeginSharedLibrary()...)
deps.CrtEnd = append(deps.CrtEnd, ctx.toolchain().CrtEndSharedLibrary()...)
}
deps.WholeStaticLibs = append(deps.WholeStaticLibs, library.SharedProperties.Shared.Whole_static_libs...)
deps.StaticLibs = append(deps.StaticLibs, library.SharedProperties.Shared.Static_libs...)
deps.SharedLibs = append(deps.SharedLibs, library.SharedProperties.Shared.Shared_libs...)
deps.ReexportSharedLibHeaders = append(deps.ReexportSharedLibHeaders, library.SharedProperties.Shared.Export_shared_lib_headers...)
deps.ReexportStaticLibHeaders = append(deps.ReexportStaticLibHeaders, library.SharedProperties.Shared.Export_static_lib_headers...)
}
if ctx.inVendor() {
deps.WholeStaticLibs = removeListFromList(deps.WholeStaticLibs, library.baseLinker.Properties.Target.Vendor.Exclude_static_libs)
deps.SharedLibs = removeListFromList(deps.SharedLibs, library.baseLinker.Properties.Target.Vendor.Exclude_shared_libs)
deps.StaticLibs = removeListFromList(deps.StaticLibs, library.baseLinker.Properties.Target.Vendor.Exclude_static_libs)
deps.ReexportSharedLibHeaders = removeListFromList(deps.ReexportSharedLibHeaders, library.baseLinker.Properties.Target.Vendor.Exclude_shared_libs)
deps.ReexportStaticLibHeaders = removeListFromList(deps.ReexportStaticLibHeaders, library.baseLinker.Properties.Target.Vendor.Exclude_static_libs)
}
if ctx.inProduct() {
deps.WholeStaticLibs = removeListFromList(deps.WholeStaticLibs, library.baseLinker.Properties.Target.Product.Exclude_static_libs)
deps.SharedLibs = removeListFromList(deps.SharedLibs, library.baseLinker.Properties.Target.Product.Exclude_shared_libs)
deps.StaticLibs = removeListFromList(deps.StaticLibs, library.baseLinker.Properties.Target.Product.Exclude_static_libs)
deps.ReexportSharedLibHeaders = removeListFromList(deps.ReexportSharedLibHeaders, library.baseLinker.Properties.Target.Product.Exclude_shared_libs)
deps.ReexportStaticLibHeaders = removeListFromList(deps.ReexportStaticLibHeaders, library.baseLinker.Properties.Target.Product.Exclude_static_libs)
}
if ctx.inRecovery() {
deps.WholeStaticLibs = removeListFromList(deps.WholeStaticLibs, library.baseLinker.Properties.Target.Recovery.Exclude_static_libs)
deps.SharedLibs = removeListFromList(deps.SharedLibs, library.baseLinker.Properties.Target.Recovery.Exclude_shared_libs)
deps.StaticLibs = removeListFromList(deps.StaticLibs, library.baseLinker.Properties.Target.Recovery.Exclude_static_libs)
deps.ReexportSharedLibHeaders = removeListFromList(deps.ReexportSharedLibHeaders, library.baseLinker.Properties.Target.Recovery.Exclude_shared_libs)
deps.ReexportStaticLibHeaders = removeListFromList(deps.ReexportStaticLibHeaders, library.baseLinker.Properties.Target.Recovery.Exclude_static_libs)
}
if ctx.inRamdisk() {
deps.WholeStaticLibs = removeListFromList(deps.WholeStaticLibs, library.baseLinker.Properties.Target.Ramdisk.Exclude_static_libs)
deps.SharedLibs = removeListFromList(deps.SharedLibs, library.baseLinker.Properties.Target.Ramdisk.Exclude_shared_libs)
deps.StaticLibs = removeListFromList(deps.StaticLibs, library.baseLinker.Properties.Target.Ramdisk.Exclude_static_libs)
deps.ReexportSharedLibHeaders = removeListFromList(deps.ReexportSharedLibHeaders, library.baseLinker.Properties.Target.Ramdisk.Exclude_shared_libs)
deps.ReexportStaticLibHeaders = removeListFromList(deps.ReexportStaticLibHeaders, library.baseLinker.Properties.Target.Ramdisk.Exclude_static_libs)
}
if ctx.inVendorRamdisk() {
deps.WholeStaticLibs = removeListFromList(deps.WholeStaticLibs, library.baseLinker.Properties.Target.Vendor_ramdisk.Exclude_static_libs)
deps.SharedLibs = removeListFromList(deps.SharedLibs, library.baseLinker.Properties.Target.Vendor_ramdisk.Exclude_shared_libs)
deps.StaticLibs = removeListFromList(deps.StaticLibs, library.baseLinker.Properties.Target.Vendor_ramdisk.Exclude_static_libs)
deps.ReexportSharedLibHeaders = removeListFromList(deps.ReexportSharedLibHeaders, library.baseLinker.Properties.Target.Vendor_ramdisk.Exclude_shared_libs)
deps.ReexportStaticLibHeaders = removeListFromList(deps.ReexportStaticLibHeaders, library.baseLinker.Properties.Target.Vendor_ramdisk.Exclude_static_libs)
}
return deps
}
func (library *libraryDecorator) linkerSpecifiedDeps(specifiedDeps specifiedDeps) specifiedDeps {
specifiedDeps = library.baseLinker.linkerSpecifiedDeps(specifiedDeps)
var properties StaticOrSharedProperties
if library.static() {
properties = library.StaticProperties.Static
} else if library.shared() {
properties = library.SharedProperties.Shared
}
specifiedDeps.sharedLibs = append(specifiedDeps.sharedLibs, properties.Shared_libs...)
// Must distinguish nil and [] in system_shared_libs - ensure that [] in
// either input list doesn't come out as nil.
if specifiedDeps.systemSharedLibs == nil {
specifiedDeps.systemSharedLibs = properties.System_shared_libs
} else {
specifiedDeps.systemSharedLibs = append(specifiedDeps.systemSharedLibs, properties.System_shared_libs...)
}
specifiedDeps.sharedLibs = android.FirstUniqueStrings(specifiedDeps.sharedLibs)
if len(specifiedDeps.systemSharedLibs) > 0 {
// Skip this if systemSharedLibs is either nil or [], to ensure they are
// retained.
specifiedDeps.systemSharedLibs = android.FirstUniqueStrings(specifiedDeps.systemSharedLibs)
}
return specifiedDeps
}
func (library *libraryDecorator) linkStatic(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
library.objects = deps.WholeStaticLibObjs.Copy()
library.objects = library.objects.Append(objs)
library.wholeStaticLibsFromPrebuilts = android.CopyOfPaths(deps.WholeStaticLibsFromPrebuilts)
fileName := ctx.ModuleName() + staticLibraryExtension
outputFile := android.PathForModuleOut(ctx, fileName)
builderFlags := flagsToBuilderFlags(flags)
if Bool(library.baseLinker.Properties.Use_version_lib) {
if ctx.Host() {
versionedOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "unversioned", fileName)
library.injectVersionSymbol(ctx, outputFile, versionedOutputFile)
} else {
versionedOutputFile := android.PathForModuleOut(ctx, "versioned", fileName)
library.distFile = versionedOutputFile
library.injectVersionSymbol(ctx, outputFile, versionedOutputFile)
}
}
transformObjToStaticLib(ctx, library.objects.objFiles, deps.WholeStaticLibsFromPrebuilts, builderFlags, outputFile, nil, objs.tidyDepFiles)
library.coverageOutputFile = transformCoverageFilesToZip(ctx, library.objects, ctx.ModuleName())
ctx.CheckbuildFile(outputFile)
if library.static() {
ctx.SetProvider(StaticLibraryInfoProvider, StaticLibraryInfo{
StaticLibrary: outputFile,
ReuseObjects: library.reuseObjects,
Objects: library.objects,
WholeStaticLibsFromPrebuilts: library.wholeStaticLibsFromPrebuilts,
TransitiveStaticLibrariesForOrdering: android.NewDepSetBuilder(android.TOPOLOGICAL).
Direct(outputFile).
Transitive(deps.TranstiveStaticLibrariesForOrdering).
Build(),
})
}
if library.header() {
ctx.SetProvider(HeaderLibraryInfoProvider, HeaderLibraryInfo{})
}
return outputFile
}
func ndkSharedLibDeps(ctx ModuleContext) android.Paths {
if ctx.Module().(*Module).IsSdkVariant() {
// The NDK sysroot timestamp file depends on all the NDK
// sysroot header and shared library files.
return android.Paths{getNdkBaseTimestampFile(ctx)}
}
return nil
}
func (library *libraryDecorator) linkShared(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
var linkerDeps android.Paths
linkerDeps = append(linkerDeps, flags.LdFlagsDeps...)
linkerDeps = append(linkerDeps, ndkSharedLibDeps(ctx)...)
unexportedSymbols := ctx.ExpandOptionalSource(library.Properties.Unexported_symbols_list, "unexported_symbols_list")
forceNotWeakSymbols := ctx.ExpandOptionalSource(library.Properties.Force_symbols_not_weak_list, "force_symbols_not_weak_list")
forceWeakSymbols := ctx.ExpandOptionalSource(library.Properties.Force_symbols_weak_list, "force_symbols_weak_list")
if !ctx.Darwin() {
if unexportedSymbols.Valid() {
ctx.PropertyErrorf("unexported_symbols_list", "Only supported on Darwin")
}
if forceNotWeakSymbols.Valid() {
ctx.PropertyErrorf("force_symbols_not_weak_list", "Only supported on Darwin")
}
if forceWeakSymbols.Valid() {
ctx.PropertyErrorf("force_symbols_weak_list", "Only supported on Darwin")
}
} else {
if unexportedSymbols.Valid() {
flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,-unexported_symbols_list,"+unexportedSymbols.String())
linkerDeps = append(linkerDeps, unexportedSymbols.Path())
}
if forceNotWeakSymbols.Valid() {
flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,-force_symbols_not_weak_list,"+forceNotWeakSymbols.String())
linkerDeps = append(linkerDeps, forceNotWeakSymbols.Path())
}
if forceWeakSymbols.Valid() {
flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,-force_symbols_weak_list,"+forceWeakSymbols.String())
linkerDeps = append(linkerDeps, forceWeakSymbols.Path())
}
}
if library.versionScriptPath.Valid() {
linkerScriptFlags := "-Wl,--version-script," + library.versionScriptPath.String()
flags.Local.LdFlags = append(flags.Local.LdFlags, linkerScriptFlags)
linkerDeps = append(linkerDeps, library.versionScriptPath.Path())
}
fileName := library.getLibName(ctx) + flags.Toolchain.ShlibSuffix()
outputFile := android.PathForModuleOut(ctx, fileName)
unstrippedOutputFile := outputFile
var implicitOutputs android.WritablePaths
if ctx.Windows() {
importLibraryPath := android.PathForModuleOut(ctx, pathtools.ReplaceExtension(fileName, "lib"))
flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,--out-implib="+importLibraryPath.String())
implicitOutputs = append(implicitOutputs, importLibraryPath)
}
builderFlags := flagsToBuilderFlags(flags)
if ctx.Darwin() && deps.DarwinSecondArchOutput.Valid() {
fatOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "pre-fat", fileName)
transformDarwinUniversalBinary(ctx, fatOutputFile, outputFile, deps.DarwinSecondArchOutput.Path())
}
// Optimize out relinking against shared libraries whose interface hasn't changed by
// depending on a table of contents file instead of the library itself.
tocFile := outputFile.ReplaceExtension(ctx, flags.Toolchain.ShlibSuffix()[1:]+".toc")
library.tocFile = android.OptionalPathForPath(tocFile)
TransformSharedObjectToToc(ctx, outputFile, tocFile)
stripFlags := flagsToStripFlags(flags)
needsStrip := library.stripper.NeedsStrip(ctx)
if library.buildStubs() {
// No need to strip stubs libraries
needsStrip = false
}
if needsStrip {
if ctx.Darwin() {
stripFlags.StripUseGnuStrip = true
}
strippedOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "unstripped", fileName)
library.stripper.StripExecutableOrSharedLib(ctx, outputFile, strippedOutputFile, stripFlags)
}
library.unstrippedOutputFile = outputFile
outputFile = maybeInjectBoringSSLHash(ctx, outputFile, library.Properties.Inject_bssl_hash, fileName)
if Bool(library.baseLinker.Properties.Use_version_lib) {
if ctx.Host() {
versionedOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "unversioned", fileName)
library.injectVersionSymbol(ctx, outputFile, versionedOutputFile)
} else {
versionedOutputFile := android.PathForModuleOut(ctx, "versioned", fileName)
library.distFile = versionedOutputFile
if library.stripper.NeedsStrip(ctx) {
out := android.PathForModuleOut(ctx, "versioned-stripped", fileName)
library.distFile = out
library.stripper.StripExecutableOrSharedLib(ctx, versionedOutputFile, out, stripFlags)
}
library.injectVersionSymbol(ctx, outputFile, versionedOutputFile)
}
}
sharedLibs := deps.EarlySharedLibs
sharedLibs = append(sharedLibs, deps.SharedLibs...)
sharedLibs = append(sharedLibs, deps.LateSharedLibs...)
linkerDeps = append(linkerDeps, deps.EarlySharedLibsDeps...)
linkerDeps = append(linkerDeps, deps.SharedLibsDeps...)
linkerDeps = append(linkerDeps, deps.LateSharedLibsDeps...)
transformObjToDynamicBinary(ctx, objs.objFiles, sharedLibs,
deps.StaticLibs, deps.LateStaticLibs, deps.WholeStaticLibs,
linkerDeps, deps.CrtBegin, deps.CrtEnd, false, builderFlags, outputFile, implicitOutputs, objs.tidyDepFiles)
objs.coverageFiles = append(objs.coverageFiles, deps.StaticLibObjs.coverageFiles...)
objs.coverageFiles = append(objs.coverageFiles, deps.WholeStaticLibObjs.coverageFiles...)
objs.sAbiDumpFiles = append(objs.sAbiDumpFiles, deps.StaticLibObjs.sAbiDumpFiles...)
objs.sAbiDumpFiles = append(objs.sAbiDumpFiles, deps.WholeStaticLibObjs.sAbiDumpFiles...)
library.coverageOutputFile = transformCoverageFilesToZip(ctx, objs, library.getLibName(ctx))
library.linkSAbiDumpFiles(ctx, objs, fileName, unstrippedOutputFile)
var transitiveStaticLibrariesForOrdering *android.DepSet
if static := ctx.GetDirectDepsWithTag(staticVariantTag); len(static) > 0 {
s := ctx.OtherModuleProvider(static[0], StaticLibraryInfoProvider).(StaticLibraryInfo)
transitiveStaticLibrariesForOrdering = s.TransitiveStaticLibrariesForOrdering
}
ctx.SetProvider(SharedLibraryInfoProvider, SharedLibraryInfo{
TableOfContents: android.OptionalPathForPath(tocFile),
SharedLibrary: unstrippedOutputFile,
TransitiveStaticLibrariesForOrdering: transitiveStaticLibrariesForOrdering,
Target: ctx.Target(),
})
stubs := ctx.GetDirectDepsWithTag(stubImplDepTag)
if len(stubs) > 0 {
var stubsInfo []SharedStubLibrary
for _, stub := range stubs {
stubInfo := ctx.OtherModuleProvider(stub, SharedLibraryInfoProvider).(SharedLibraryInfo)
flagInfo := ctx.OtherModuleProvider(stub, FlagExporterInfoProvider).(FlagExporterInfo)
stubsInfo = append(stubsInfo, SharedStubLibrary{
Version: moduleLibraryInterface(stub).stubsVersion(),
SharedLibraryInfo: stubInfo,
FlagExporterInfo: flagInfo,
})
}
ctx.SetProvider(SharedLibraryStubsProvider, SharedLibraryStubsInfo{
SharedStubLibraries: stubsInfo,
IsLLNDK: ctx.IsLlndk(),
})
}
return unstrippedOutputFile
}
func (library *libraryDecorator) unstrippedOutputFilePath() android.Path {
return library.unstrippedOutputFile
}
func (library *libraryDecorator) disableStripping() {
library.stripper.StripProperties.Strip.None = BoolPtr(true)
}
func (library *libraryDecorator) nativeCoverage() bool {
if library.header() || library.buildStubs() {
return false
}
return true
}
func (library *libraryDecorator) coverageOutputFilePath() android.OptionalPath {
return library.coverageOutputFile
}
func getRefAbiDumpFile(ctx android.ModuleInstallPathContext,
versionedDumpDir, fileName string) android.OptionalPath {
currentArchType := ctx.Arch().ArchType
primaryArchType := ctx.Config().DevicePrimaryArchType()
archName := currentArchType.String()
if currentArchType != primaryArchType {
archName += "_" + primaryArchType.String()
}
return android.ExistentPathForSource(ctx, versionedDumpDir, archName, "source-based",
fileName+".lsdump")
}
func getRefAbiDumpDir(isNdk, isVndk bool) string {
var dirName string
if isNdk {
dirName = "ndk"
} else if isVndk {
dirName = "vndk"
} else {
dirName = "platform"
}
return filepath.Join("prebuilts", "abi-dumps", dirName)
}
func prevRefAbiDumpVersion(ctx ModuleContext, dumpDir string) int {
sdkVersionInt := ctx.Config().PlatformSdkVersion().FinalInt()
sdkVersionStr := ctx.Config().PlatformSdkVersion().String()
if ctx.Config().PlatformSdkFinal() {
return sdkVersionInt - 1
} else {
// The platform SDK version can be upgraded before finalization while the corresponding abi dumps hasn't
// been generated. Thus the Cross-Version Check chooses PLATFORM_SDK_VERION - 1 as previous version.
// This situation could be identified by checking the existence of the PLATFORM_SDK_VERION dump directory.
versionedDumpDir := android.ExistentPathForSource(ctx, dumpDir, sdkVersionStr)
if versionedDumpDir.Valid() {
return sdkVersionInt
} else {
return sdkVersionInt - 1
}
}
}
func currRefAbiDumpVersion(ctx ModuleContext, isVndk bool) string {
if isVndk {
// Each version of VNDK is independent, so follow the VNDK version which is the codename or PLATFORM_SDK_VERSION.
return ctx.Module().(*Module).VndkVersion()
} else if ctx.Config().PlatformSdkFinal() {
// After sdk finalization, the ABI of the latest API level must be consistent with the source code,
// so choose PLATFORM_SDK_VERSION as the current version.
return ctx.Config().PlatformSdkVersion().String()
} else {
return "current"
}
}
// sourceAbiDiff registers a build statement to compare linked sAbi dump files (.lsdump).
func (library *libraryDecorator) sourceAbiDiff(ctx android.ModuleContext, referenceDump android.Path,
baseName, nameExt string, isLlndkOrNdk, allowExtensions bool,
sourceVersion, errorMessage string) {
sourceDump := library.sAbiOutputFile.Path()
extraFlags := []string{"-target-version", sourceVersion}
headerAbiChecker := library.getHeaderAbiCheckerProperties(ctx)
if Bool(headerAbiChecker.Check_all_apis) {
extraFlags = append(extraFlags, "-check-all-apis")
} else {
extraFlags = append(extraFlags,
"-allow-unreferenced-changes",
"-allow-unreferenced-elf-symbol-changes")
}
if isLlndkOrNdk {
extraFlags = append(extraFlags, "-consider-opaque-types-different")
}
if allowExtensions {
extraFlags = append(extraFlags, "-allow-extensions")
}
extraFlags = append(extraFlags, headerAbiChecker.Diff_flags...)
library.sAbiDiff = append(
library.sAbiDiff,
transformAbiDumpToAbiDiff(ctx, sourceDump, referenceDump,
baseName, nameExt, extraFlags, errorMessage))
}
func (library *libraryDecorator) crossVersionAbiDiff(ctx android.ModuleContext, referenceDump android.Path,
baseName string, isLlndkOrNdk bool, sourceVersion, prevVersion string) {
errorMessage := "error: Please follow https://android.googlesource.com/platform/development/+/master/vndk/tools/header-checker/README.md#configure-cross_version-abi-check to resolve the ABI difference between your source code and version " + prevVersion + "."
library.sourceAbiDiff(ctx, referenceDump, baseName, prevVersion,
isLlndkOrNdk, true /* allowExtensions */, sourceVersion, errorMessage)
}
func (library *libraryDecorator) sameVersionAbiDiff(ctx android.ModuleContext, referenceDump android.Path,
baseName string, isLlndkOrNdk, allowExtensions bool) {
libName := strings.TrimSuffix(baseName, filepath.Ext(baseName))
errorMessage := "error: Please update ABI references with: $$ANDROID_BUILD_TOP/development/vndk/tools/header-checker/utils/create_reference_dumps.py -l " + libName
library.sourceAbiDiff(ctx, referenceDump, baseName, "",
isLlndkOrNdk, allowExtensions, "current", errorMessage)
}
func (library *libraryDecorator) optInAbiDiff(ctx android.ModuleContext, referenceDump android.Path,
baseName, nameExt string, isLlndkOrNdk bool, refDumpDir string) {
libName := strings.TrimSuffix(baseName, filepath.Ext(baseName))
errorMessage := "error: Please update ABI references with: $$ANDROID_BUILD_TOP/development/vndk/tools/header-checker/utils/create_reference_dumps.py -l " + libName + " -ref-dump-dir $$ANDROID_BUILD_TOP/" + refDumpDir
library.sourceAbiDiff(ctx, referenceDump, baseName, nameExt,
isLlndkOrNdk, false /* allowExtensions */, "current", errorMessage)
}
func (library *libraryDecorator) linkSAbiDumpFiles(ctx ModuleContext, objs Objects, fileName string, soFile android.Path) {
if library.sabi.shouldCreateSourceAbiDump() {
exportIncludeDirs := library.flagExporter.exportedIncludes(ctx)
var SourceAbiFlags []string
for _, dir := range exportIncludeDirs.Strings() {
SourceAbiFlags = append(SourceAbiFlags, "-I"+dir)
}
for _, reexportedInclude := range library.sabi.Properties.ReexportedIncludes {
SourceAbiFlags = append(SourceAbiFlags, "-I"+reexportedInclude)
}
exportedHeaderFlags := strings.Join(SourceAbiFlags, " ")
headerAbiChecker := library.getHeaderAbiCheckerProperties(ctx)
library.sAbiOutputFile = transformDumpToLinkedDump(ctx, objs.sAbiDumpFiles, soFile, fileName, exportedHeaderFlags,
android.OptionalPathForModuleSrc(ctx, library.symbolFileForAbiCheck(ctx)),
headerAbiChecker.Exclude_symbol_versions,
headerAbiChecker.Exclude_symbol_tags)
addLsdumpPath(classifySourceAbiDump(ctx) + ":" + library.sAbiOutputFile.String())
// The logic must be consistent with classifySourceAbiDump.
isVndk := ctx.useVndk() && ctx.isVndk()
isNdk := ctx.isNdk(ctx.Config())
isLlndk := ctx.isImplementationForLLNDKPublic()
dumpDir := getRefAbiDumpDir(isNdk, isVndk)
binderBitness := ctx.DeviceConfig().BinderBitness()
// If NDK or PLATFORM library, check against previous version ABI.
if !isVndk {
prevVersionInt := prevRefAbiDumpVersion(ctx, dumpDir)
prevVersion := strconv.Itoa(prevVersionInt)
prevDumpDir := filepath.Join(dumpDir, prevVersion, binderBitness)
prevDumpFile := getRefAbiDumpFile(ctx, prevDumpDir, fileName)
if prevDumpFile.Valid() {
library.crossVersionAbiDiff(ctx, prevDumpFile.Path(),
fileName, isLlndk || isNdk,
strconv.Itoa(prevVersionInt+1), prevVersion)
}
}
// Check against the current version.
currVersion := currRefAbiDumpVersion(ctx, isVndk)
currDumpDir := filepath.Join(dumpDir, currVersion, binderBitness)
currDumpFile := getRefAbiDumpFile(ctx, currDumpDir, fileName)
if currDumpFile.Valid() {
library.sameVersionAbiDiff(ctx, currDumpFile.Path(),
fileName, isLlndk || isNdk, ctx.IsVndkExt())
}
// Check against the opt-in reference dumps.
for i, optInDumpDir := range headerAbiChecker.Ref_dump_dirs {
optInDumpDirPath := android.PathForModuleSrc(ctx, optInDumpDir)
// Ref_dump_dirs are not versioned.
// They do not contain subdir for binder bitness because 64-bit binder has been mandatory.
optInDumpFile := getRefAbiDumpFile(ctx, optInDumpDirPath.String(), fileName)
if !optInDumpFile.Valid() {
continue
}
library.optInAbiDiff(ctx, optInDumpFile.Path(),
fileName, "opt"+strconv.Itoa(i), isLlndk || isNdk,
optInDumpDirPath.String())
}
}
}
func processLLNDKHeaders(ctx ModuleContext, srcHeaderDir string, outDir android.ModuleGenPath) (timestamp android.Path, installPaths android.WritablePaths) {
srcDir := android.PathForModuleSrc(ctx, srcHeaderDir)
srcFiles := ctx.GlobFiles(filepath.Join(srcDir.String(), "**/*.h"), nil)
for _, header := range srcFiles {
headerDir := filepath.Dir(header.String())
relHeaderDir, err := filepath.Rel(srcDir.String(), headerDir)
if err != nil {
ctx.ModuleErrorf("filepath.Rel(%q, %q) failed: %s",
srcDir.String(), headerDir, err)
continue
}
installPaths = append(installPaths, outDir.Join(ctx, relHeaderDir, header.Base()))
}
return processHeadersWithVersioner(ctx, srcDir, outDir, srcFiles, installPaths), installPaths
}
// link registers actions to link this library, and sets various fields
// on this library to reflect information that should be exported up the build
// tree (for example, exported flags and include paths).
func (library *libraryDecorator) link(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
if ctx.IsLlndk() {
if len(library.Properties.Llndk.Export_preprocessed_headers) > 0 {
// This is the vendor variant of an LLNDK library with preprocessed headers.
genHeaderOutDir := android.PathForModuleGen(ctx, "include")
var timestampFiles android.Paths
for _, dir := range library.Properties.Llndk.Export_preprocessed_headers {
timestampFile, installPaths := processLLNDKHeaders(ctx, dir, genHeaderOutDir)
timestampFiles = append(timestampFiles, timestampFile)
library.addExportedGeneratedHeaders(installPaths.Paths()...)
}
if Bool(library.Properties.Llndk.Export_headers_as_system) {
library.reexportSystemDirs(genHeaderOutDir)
} else {
library.reexportDirs(genHeaderOutDir)
}
library.reexportDeps(timestampFiles...)
}
// override the module's export_include_dirs with llndk.override_export_include_dirs
// if it is set.
if override := library.Properties.Llndk.Override_export_include_dirs; override != nil {
library.flagExporter.Properties.Export_include_dirs = override
}
if Bool(library.Properties.Llndk.Export_headers_as_system) {
library.flagExporter.Properties.Export_system_include_dirs = append(
library.flagExporter.Properties.Export_system_include_dirs,
library.flagExporter.Properties.Export_include_dirs...)
library.flagExporter.Properties.Export_include_dirs = nil
}
}
if ctx.IsVendorPublicLibrary() {
// override the module's export_include_dirs with vendor_public_library.override_export_include_dirs
// if it is set.
if override := library.Properties.Vendor_public_library.Override_export_include_dirs; override != nil {
library.flagExporter.Properties.Export_include_dirs = override
}
}
// Linking this library consists of linking `deps.Objs` (.o files in dependencies
// of this library), together with `objs` (.o files created by compiling this
// library).
objs = deps.Objs.Copy().Append(objs)
var out android.Path
if library.static() || library.header() {
out = library.linkStatic(ctx, flags, deps, objs)
} else {
out = library.linkShared(ctx, flags, deps, objs)
}
// Export include paths and flags to be propagated up the tree.
library.exportIncludes(ctx)
library.reexportDirs(deps.ReexportedDirs...)
library.reexportSystemDirs(deps.ReexportedSystemDirs...)
library.reexportFlags(deps.ReexportedFlags...)
library.reexportDeps(deps.ReexportedDeps...)
library.addExportedGeneratedHeaders(deps.ReexportedGeneratedHeaders...)
// Optionally export aidl headers.
if Bool(library.Properties.Aidl.Export_aidl_headers) {
if library.baseCompiler.hasSrcExt(".aidl") {
dir := android.PathForModuleGen(ctx, "aidl")
library.reexportDirs(dir)
library.reexportDeps(library.baseCompiler.aidlOrderOnlyDeps...)
library.addExportedGeneratedHeaders(library.baseCompiler.aidlHeaders...)
}
}
// Optionally export proto headers.
if Bool(library.Properties.Proto.Export_proto_headers) {
if library.baseCompiler.hasSrcExt(".proto") {
var includes android.Paths
if flags.proto.CanonicalPathFromRoot {
includes = append(includes, flags.proto.SubDir)
}
includes = append(includes, flags.proto.Dir)
library.reexportDirs(includes...)
library.reexportDeps(library.baseCompiler.protoOrderOnlyDeps...)
library.addExportedGeneratedHeaders(library.baseCompiler.protoHeaders...)
}
}
// If the library is sysprop_library, expose either public or internal header selectively.
if library.baseCompiler.hasSrcExt(".sysprop") {
dir := android.PathForModuleGen(ctx, "sysprop", "include")
if library.Properties.Sysprop.Platform != nil {
isOwnerPlatform := Bool(library.Properties.Sysprop.Platform)
// If the owner is different from the user, expose public header. That is,
// 1) if the user is product (as owner can only be platform / vendor)
// 2) if the owner is platform and the client is vendor
// We don't care Platform -> Vendor dependency as it's already forbidden.
if ctx.Device() && (ctx.ProductSpecific() || (isOwnerPlatform && ctx.inVendor())) {
dir = android.PathForModuleGen(ctx, "sysprop/public", "include")
}
}
// Make sure to only export headers which are within the include directory.
_, headers := android.FilterPathListPredicate(library.baseCompiler.syspropHeaders, func(path android.Path) bool {
_, isRel := android.MaybeRel(ctx, dir.String(), path.String())
return isRel
})
// Add sysprop-related directories to the exported directories of this library.
library.reexportDirs(dir)
library.reexportDeps(library.baseCompiler.syspropOrderOnlyDeps...)
library.addExportedGeneratedHeaders(headers...)
}
// Add stub-related flags if this library is a stub library.
library.exportVersioningMacroIfNeeded(ctx)
// Propagate a Provider containing information about exported flags, deps, and include paths.
library.flagExporter.setProvider(ctx)
return out
}
func (library *libraryDecorator) exportVersioningMacroIfNeeded(ctx android.BaseModuleContext) {
if library.buildStubs() && library.stubsVersion() != "" && !library.skipAPIDefine {
name := versioningMacroName(ctx.Module().(*Module).ImplementationModuleName(ctx))
apiLevel, err := android.ApiLevelFromUser(ctx, library.stubsVersion())
if err != nil {
ctx.ModuleErrorf("Can't export version macro: %s", err.Error())
}
library.reexportFlags("-D" + name + "=" + strconv.Itoa(apiLevel.FinalOrPreviewInt()))
}
}
// buildStatic returns true if this library should be built as a static library.
func (library *libraryDecorator) buildStatic() bool {
return library.MutatedProperties.BuildStatic &&
BoolDefault(library.StaticProperties.Static.Enabled, true)
}
// buildShared returns true if this library should be built as a shared library.
func (library *libraryDecorator) buildShared() bool {
return library.MutatedProperties.BuildShared &&
BoolDefault(library.SharedProperties.Shared.Enabled, true)
}
func (library *libraryDecorator) objs() Objects {
return library.objects
}
func (library *libraryDecorator) reuseObjs() Objects {
return library.reuseObjects
}
func (library *libraryDecorator) toc() android.OptionalPath {
return library.tocFile
}
func (library *libraryDecorator) installSymlinkToRuntimeApex(ctx ModuleContext, file android.Path) {
dir := library.baseInstaller.installDir(ctx)
dirOnDevice := android.InstallPathToOnDevicePath(ctx, dir)
target := "/" + filepath.Join("apex", "com.android.runtime", dir.Base(), "bionic", file.Base())
ctx.InstallAbsoluteSymlink(dir, file.Base(), target)
library.postInstallCmds = append(library.postInstallCmds, makeSymlinkCmd(dirOnDevice, file.Base(), target))
}
func (library *libraryDecorator) install(ctx ModuleContext, file android.Path) {
if library.shared() {
if ctx.Device() && ctx.useVndk() {
// set subDir for VNDK extensions
if ctx.IsVndkExt() {
if ctx.isVndkSp() {
library.baseInstaller.subDir = "vndk-sp"
} else {
library.baseInstaller.subDir = "vndk"
}
}
// In some cases we want to use core variant for VNDK-Core libs.
// Skip product variant since VNDKs use only the vendor variant.
if ctx.isVndk() && !ctx.isVndkSp() && !ctx.IsVndkExt() && !ctx.inProduct() {
mayUseCoreVariant := true
if ctx.mustUseVendorVariant() {
mayUseCoreVariant = false
}
if ctx.Config().CFIEnabledForPath(ctx.ModuleDir()) {
mayUseCoreVariant = false
}
if mayUseCoreVariant {
library.checkSameCoreVariant = true
if ctx.DeviceConfig().VndkUseCoreVariant() {
library.useCoreVariant = true
}
}
}
// do not install vndk libs
// vndk libs are packaged into VNDK APEX
if ctx.isVndk() && !ctx.IsVndkExt() {
return
}
} else if library.hasStubsVariants() && !ctx.Host() && ctx.directlyInAnyApex() {
// Bionic libraries (e.g. libc.so) is installed to the bootstrap subdirectory.
// The original path becomes a symlink to the corresponding file in the
// runtime APEX.
translatedArch := ctx.Target().NativeBridge == android.NativeBridgeEnabled
if InstallToBootstrap(ctx.baseModuleName(), ctx.Config()) && !library.buildStubs() &&
!translatedArch && !ctx.inRamdisk() && !ctx.inVendorRamdisk() && !ctx.inRecovery() {
if ctx.Device() {
library.installSymlinkToRuntimeApex(ctx, file)
}
library.baseInstaller.subDir = "bootstrap"
}
} else if ctx.directlyInAnyApex() && ctx.IsLlndk() && !isBionic(ctx.baseModuleName()) {
// Skip installing LLNDK (non-bionic) libraries moved to APEX.
ctx.Module().HideFromMake()
}
library.baseInstaller.install(ctx, file)
}
if Bool(library.Properties.Static_ndk_lib) && library.static() &&
!ctx.useVndk() && !ctx.inRamdisk() && !ctx.inVendorRamdisk() && !ctx.inRecovery() && ctx.Device() &&
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
library.baseLinker.sanitize.isUnsanitizedVariant() &&
ctx.isForPlatform() && !ctx.isPreventInstall() {
installPath := getNdkSysrootBase(ctx).Join(
ctx, "usr/lib", config.NDKTriple(ctx.toolchain()), file.Base())
ctx.ModuleBuild(pctx, android.ModuleBuildParams{
Rule: android.Cp,
Description: "install " + installPath.Base(),
Output: installPath,
Input: file,
})
library.ndkSysrootPath = installPath
}
}
func (library *libraryDecorator) everInstallable() bool {
// Only shared and static libraries are installed. Header libraries (which are
// neither static or shared) are not installed.
return library.shared() || library.static()
}
// static returns true if this library is for a "static' variant.
func (library *libraryDecorator) static() bool {
return library.MutatedProperties.VariantIsStatic
}
// shared returns true if this library is for a "shared' variant.
func (library *libraryDecorator) shared() bool {
return library.MutatedProperties.VariantIsShared
}
// header returns true if this library is for a header-only variant.
func (library *libraryDecorator) header() bool {
// Neither "static" nor "shared" implies this library is header-only.
return !library.static() && !library.shared()
}
// setStatic marks the library variant as "static".
func (library *libraryDecorator) setStatic() {
library.MutatedProperties.VariantIsStatic = true
library.MutatedProperties.VariantIsShared = false
}
// setShared marks the library variant as "shared".
func (library *libraryDecorator) setShared() {
library.MutatedProperties.VariantIsStatic = false
library.MutatedProperties.VariantIsShared = true
}
// BuildOnlyStatic disables building this library as a shared library.
func (library *libraryDecorator) BuildOnlyStatic() {
library.MutatedProperties.BuildShared = false
}
// BuildOnlyShared disables building this library as a static library.
func (library *libraryDecorator) BuildOnlyShared() {
library.MutatedProperties.BuildStatic = false
}
// HeaderOnly disables building this library as a shared or static library;
// the library only exists to propagate header file dependencies up the build graph.
func (library *libraryDecorator) HeaderOnly() {
library.MutatedProperties.BuildShared = false
library.MutatedProperties.BuildStatic = false
}
// hasLLNDKStubs returns true if this cc_library module has a variant that will build LLNDK stubs.
func (library *libraryDecorator) hasLLNDKStubs() bool {
return String(library.Properties.Llndk.Symbol_file) != ""
}
// hasLLNDKStubs returns true if this cc_library module has a variant that will build LLNDK stubs.
func (library *libraryDecorator) hasLLNDKHeaders() bool {
return Bool(library.Properties.Llndk.Llndk_headers)
}
// hasVendorPublicLibrary returns true if this cc_library module has a variant that will build
// vendor public library stubs.
func (library *libraryDecorator) hasVendorPublicLibrary() bool {
return String(library.Properties.Vendor_public_library.Symbol_file) != ""
}
func (library *libraryDecorator) implementationModuleName(name string) string {
return name
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
func (library *libraryDecorator) buildStubs() bool {
return library.MutatedProperties.BuildStubs
}
func (library *libraryDecorator) symbolFileForAbiCheck(ctx ModuleContext) *string {
if props := library.getHeaderAbiCheckerProperties(ctx); props.Symbol_file != nil {
return props.Symbol_file
}
if ctx.Module().(*Module).IsLlndk() {
return library.Properties.Llndk.Symbol_file
}
if library.hasStubsVariants() && library.Properties.Stubs.Symbol_file != nil {
return library.Properties.Stubs.Symbol_file
}
return nil
}
func (library *libraryDecorator) hasStubsVariants() bool {
// Just having stubs.symbol_file is enough to create a stub variant. In that case
// the stub for the future API level is created.
return library.Properties.Stubs.Symbol_file != nil ||
len(library.Properties.Stubs.Versions) > 0
}
func (library *libraryDecorator) isStubsImplementationRequired() bool {
return BoolDefault(library.Properties.Stubs.Implementation_installable, true)
}
func (library *libraryDecorator) stubsVersions(ctx android.BaseMutatorContext) []string {
if !library.hasStubsVariants() {
return nil
}
if library.hasLLNDKStubs() && ctx.Module().(*Module).UseVndk() {
// LLNDK libraries only need a single stubs variant.
return []string{android.FutureApiLevel.String()}
}
// Future API level is implicitly added if there isn't
vers := library.Properties.Stubs.Versions
if inList(android.FutureApiLevel.String(), vers) {
return vers
}
// In some cases, people use the raw value "10000" in the versions property.
// We shouldn't add the future API level in that case, otherwise there will
// be two identical versions.
if inList(strconv.Itoa(android.FutureApiLevel.FinalOrFutureInt()), vers) {
return vers
}
return append(vers, android.FutureApiLevel.String())
}
func (library *libraryDecorator) setStubsVersion(version string) {
library.MutatedProperties.StubsVersion = version
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
func (library *libraryDecorator) stubsVersion() string {
return library.MutatedProperties.StubsVersion
}
func (library *libraryDecorator) setBuildStubs(isLatest bool) {
library.MutatedProperties.BuildStubs = true
library.MutatedProperties.IsLatestVersion = isLatest
}
func (library *libraryDecorator) setAllStubsVersions(versions []string) {
library.MutatedProperties.AllStubsVersions = versions
}
func (library *libraryDecorator) allStubsVersions() []string {
return library.MutatedProperties.AllStubsVersions
}
func (library *libraryDecorator) isLatestStubVersion() bool {
return library.MutatedProperties.IsLatestVersion
}
func (library *libraryDecorator) availableFor(what string) bool {
var list []string
if library.static() {
list = library.StaticProperties.Static.Apex_available
} else if library.shared() {
list = library.SharedProperties.Shared.Apex_available
}
if len(list) == 0 {
return false
}
return android.CheckAvailableForApex(what, list)
}
func (library *libraryDecorator) installable() *bool {
if library.static() {
return library.StaticProperties.Static.Installable
} else if library.shared() {
return library.SharedProperties.Shared.Installable
}
return nil
}
func (library *libraryDecorator) getPartition() string {
return library.path.Partition()
}
func (library *libraryDecorator) getAPIListCoverageXMLPath() android.ModuleOutPath {
return library.apiListCoverageXmlPath
}
func (library *libraryDecorator) overriddenModules() []string {
return library.Properties.Overrides
}
var _ overridable = (*libraryDecorator)(nil)
var versioningMacroNamesListKey = android.NewOnceKey("versioningMacroNamesList")
// versioningMacroNamesList returns a singleton map, where keys are "version macro names",
// and values are the module name responsible for registering the version macro name.
//
// Version macros are used when building against stubs, to provide version information about
// the stub. Only stub libraries should have an entry in this list.
//
// For example, when building against libFoo#ver, __LIBFOO_API__ macro is set to ver so
// that headers from libFoo can be conditionally compiled (this may hide APIs
// that are not available for the version).
//
// This map is used to ensure that there aren't conflicts between these version macro names.
func versioningMacroNamesList(config android.Config) *map[string]string {
return config.Once(versioningMacroNamesListKey, func() interface{} {
m := make(map[string]string)
return &m
}).(*map[string]string)
}
// alphanumeric and _ characters are preserved.
// other characters are all converted to _
var charsNotForMacro = regexp.MustCompile("[^a-zA-Z0-9_]+")
// versioningMacroName returns the canonical version macro name for the given module.
func versioningMacroName(moduleName string) string {
macroName := charsNotForMacro.ReplaceAllString(moduleName, "_")
macroName = strings.ToUpper(macroName)
return "__" + macroName + "_API__"
}
// NewLibrary builds and returns a new Module corresponding to a C++ library.
// Individual module implementations which comprise a C++ library (or something like
// a C++ library) should call this function, set some fields on the result, and
// then call the Init function.
func NewLibrary(hod android.HostOrDeviceSupported) (*Module, *libraryDecorator) {
module := newModule(hod, android.MultilibBoth)
library := &libraryDecorator{
MutatedProperties: LibraryMutatedProperties{
BuildShared: true,
BuildStatic: true,
},
baseCompiler: NewBaseCompiler(),
baseLinker: NewBaseLinker(module.sanitize),
baseInstaller: NewBaseInstaller("lib", "lib64", InstallInSystem),
sabi: module.sabi,
}
module.compiler = library
module.linker = library
module.installer = library
module.library = library
return module, library
}
// connects a shared library to a static library in order to reuse its .o files to avoid
// compiling source files twice.
func reuseStaticLibrary(mctx android.BottomUpMutatorContext, static, shared *Module) {
if staticCompiler, ok := static.compiler.(*libraryDecorator); ok {
sharedCompiler := shared.compiler.(*libraryDecorator)
// Check libraries in addition to cflags, since libraries may be exporting different
// include directories.
if len(staticCompiler.StaticProperties.Static.Cflags) == 0 &&
len(sharedCompiler.SharedProperties.Shared.Cflags) == 0 &&
len(staticCompiler.StaticProperties.Static.Whole_static_libs) == 0 &&
len(sharedCompiler.SharedProperties.Shared.Whole_static_libs) == 0 &&
len(staticCompiler.StaticProperties.Static.Static_libs) == 0 &&
len(sharedCompiler.SharedProperties.Shared.Static_libs) == 0 &&
len(staticCompiler.StaticProperties.Static.Shared_libs) == 0 &&
len(sharedCompiler.SharedProperties.Shared.Shared_libs) == 0 &&
// Compare System_shared_libs properties with nil because empty lists are
// semantically significant for them.
staticCompiler.StaticProperties.Static.System_shared_libs == nil &&
sharedCompiler.SharedProperties.Shared.System_shared_libs == nil {
mctx.AddInterVariantDependency(reuseObjTag, shared, static)
sharedCompiler.baseCompiler.Properties.OriginalSrcs =
sharedCompiler.baseCompiler.Properties.Srcs
sharedCompiler.baseCompiler.Properties.Srcs = nil
sharedCompiler.baseCompiler.Properties.Generated_sources = nil
}
// This dep is just to reference static variant from shared variant
mctx.AddInterVariantDependency(staticVariantTag, shared, static)
}
}
// LinkageMutator adds "static" or "shared" variants for modules depending
// on whether the module can be built as a static library or a shared library.
func LinkageMutator(mctx android.BottomUpMutatorContext) {
ccPrebuilt := false
if m, ok := mctx.Module().(*Module); ok && m.linker != nil {
_, ccPrebuilt = m.linker.(prebuiltLibraryInterface)
}
if ccPrebuilt {
library := mctx.Module().(*Module).linker.(prebuiltLibraryInterface)
// Differentiate between header only and building an actual static/shared library
buildStatic := library.buildStatic()
buildShared := library.buildShared()
if buildStatic || buildShared {
// Always create both the static and shared variants for prebuilt libraries, and then disable the one
// that is not being used. This allows them to share the name of a cc_library module, which requires that
// all the variants of the cc_library also exist on the prebuilt.
modules := mctx.CreateLocalVariations("static", "shared")
static := modules[0].(*Module)
shared := modules[1].(*Module)
static.linker.(prebuiltLibraryInterface).setStatic()
shared.linker.(prebuiltLibraryInterface).setShared()
if buildShared {
mctx.AliasVariation("shared")
} else if buildStatic {
mctx.AliasVariation("static")
}
if !buildStatic {
static.linker.(prebuiltLibraryInterface).disablePrebuilt()
}
if !buildShared {
shared.linker.(prebuiltLibraryInterface).disablePrebuilt()
}
} else {
// Header only
}
} else if library, ok := mctx.Module().(LinkableInterface); ok && library.CcLibraryInterface() {
// Non-cc.Modules may need an empty variant for their mutators.
variations := []string{}
if library.NonCcVariants() {
variations = append(variations, "")
}
isLLNDK := false
if m, ok := mctx.Module().(*Module); ok {
isLLNDK = m.IsLlndk()
}
buildStatic := library.BuildStaticVariant() && !isLLNDK
buildShared := library.BuildSharedVariant()
if buildStatic && buildShared {
variations := append([]string{"static", "shared"}, variations...)
modules := mctx.CreateLocalVariations(variations...)
static := modules[0].(LinkableInterface)
shared := modules[1].(LinkableInterface)
static.SetStatic()
shared.SetShared()
if _, ok := library.(*Module); ok {
reuseStaticLibrary(mctx, static.(*Module), shared.(*Module))
}
mctx.AliasVariation("shared")
} else if buildStatic {
variations := append([]string{"static"}, variations...)
modules := mctx.CreateLocalVariations(variations...)
modules[0].(LinkableInterface).SetStatic()
mctx.AliasVariation("static")
} else if buildShared {
variations := append([]string{"shared"}, variations...)
modules := mctx.CreateLocalVariations(variations...)
modules[0].(LinkableInterface).SetShared()
mctx.AliasVariation("shared")
} else if len(variations) > 0 {
mctx.CreateLocalVariations(variations...)
mctx.AliasVariation(variations[0])
}
}
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
// normalizeVersions modifies `versions` in place, so that each raw version
// string becomes its normalized canonical form.
// Validates that the versions in `versions` are specified in least to greatest order.
func normalizeVersions(ctx android.BaseModuleContext, versions []string) {
var previous android.ApiLevel
for i, v := range versions {
ver, err := android.ApiLevelFromUser(ctx, v)
if err != nil {
ctx.PropertyErrorf("versions", "%s", err.Error())
return
}
if i > 0 && ver.LessThanOrEqualTo(previous) {
ctx.PropertyErrorf("versions", "not sorted: %v", versions)
}
versions[i] = ver.String()
previous = ver
}
}
func createVersionVariations(mctx android.BottomUpMutatorContext, versions []string) {
// "" is for the non-stubs (implementation) variant for system modules, or the LLNDK variant
// for LLNDK modules.
variants := append(android.CopyOf(versions), "")
m := mctx.Module().(*Module)
isLLNDK := m.IsLlndk()
isVendorPublicLibrary := m.IsVendorPublicLibrary()
isImportedApiLibrary := m.isImportedApiLibrary()
modules := mctx.CreateLocalVariations(variants...)
for i, m := range modules {
if variants[i] != "" || isLLNDK || isVendorPublicLibrary || isImportedApiLibrary {
// A stubs or LLNDK stubs variant.
c := m.(*Module)
c.sanitize = nil
c.stl = nil
c.Properties.PreventInstall = true
lib := moduleLibraryInterface(m)
isLatest := i == (len(versions) - 1)
lib.setBuildStubs(isLatest)
if variants[i] != "" {
// A non-LLNDK stubs module is hidden from make and has a dependency from the
// implementation module to the stubs module.
c.Properties.HideFromMake = true
lib.setStubsVersion(variants[i])
mctx.AddInterVariantDependency(stubImplDepTag, modules[len(modules)-1], modules[i])
}
}
}
mctx.AliasVariation("")
latestVersion := ""
if len(versions) > 0 {
latestVersion = versions[len(versions)-1]
}
mctx.CreateAliasVariation("latest", latestVersion)
}
func createPerApiVersionVariations(mctx android.BottomUpMutatorContext, minSdkVersion string) {
from, err := nativeApiLevelFromUser(mctx, minSdkVersion)
if err != nil {
mctx.PropertyErrorf("min_sdk_version", err.Error())
return
}
versionStrs := ndkLibraryVersions(mctx, from)
modules := mctx.CreateLocalVariations(versionStrs...)
for i, module := range modules {
module.(*Module).Properties.Sdk_version = StringPtr(versionStrs[i])
Versioned CRT objects are built with correct __ANDROID_API__ Background: `min_sdk_version` of a crt object is the oldest SDK version that the crt object supports. When it's set to for example 16, Soong creates a number of versioned variants of the crt object starting from 16 to the latest version. The variant for version X is provided to NDK clients having `min_sdk_version` set to X. Problem: all versioned variants of a crt object were built with `-target <arch>-linux-android16`. Therefore they all have been with `#define __ANDROID_API__ 16`. This is because the mutated variants still have the same min_sdk_version property and the clang triple follows min_sdk_version, not sdk_version. This is too conservative and against our intention to provide the latest crt object that matches with the min_sdk_version of the client. In the other hand, the platform(non-sdk) variant of the crt object doesn't have such a problem. min_sdk_version is completely ignored. However, this is a bug and will be fixed by aosp/1640364. As a side effect of the fixing, the platform variant will begin to built with a very old __ANDROID_API__ which unnecessarily turns off the new platform features like the TLS segment over-alignment. This change fixes the problems: * For the versioned variants of crt objects, we set both `min_sdk_version` and `sdk_versio` to the version that the variant is created for. * For the platform variant of crt objects, `min_sdk_version` is force reset to "current". Bug: 183191008 Test: m Change-Id: I8c9d0fcea816de8cd1532dac4a47eee4f726c037
2021-03-19 14:18:04 +01:00
module.(*Module).Properties.Min_sdk_version = StringPtr(versionStrs[i])
}
}
func canBeOrLinkAgainstVersionVariants(module interface {
Host() bool
InRamdisk() bool
InVendorRamdisk() bool
}) bool {
return !module.Host() && !module.InRamdisk() && !module.InVendorRamdisk()
}
func canBeVersionVariant(module interface {
Host() bool
InRamdisk() bool
InVendorRamdisk() bool
CcLibraryInterface() bool
Shared() bool
}) bool {
return canBeOrLinkAgainstVersionVariants(module) &&
module.CcLibraryInterface() && module.Shared()
}
func moduleLibraryInterface(module blueprint.Module) libraryInterface {
if m, ok := module.(*Module); ok {
return m.library
}
return nil
}
// setStubsVersions normalizes the versions in the Stubs.Versions property into MutatedProperties.AllStubsVersions.
func setStubsVersions(mctx android.BottomUpMutatorContext, library libraryInterface, module *Module) {
if !library.buildShared() || !canBeVersionVariant(module) {
return
}
versions := library.stubsVersions(mctx)
if len(versions) <= 0 {
return
}
normalizeVersions(mctx, versions)
if mctx.Failed() {
return
}
// Set the versions on the pre-mutated module so they can be read by any llndk modules that
// depend on the implementation library and haven't been mutated yet.
library.setAllStubsVersions(versions)
}
// versionMutator splits a module into the mandatory non-stubs variant
// (which is unnamed) and zero or more stubs variants.
func versionMutator(mctx android.BottomUpMutatorContext) {
if mctx.Os() != android.Android {
return
}
m, ok := mctx.Module().(*Module)
if library := moduleLibraryInterface(mctx.Module()); library != nil && canBeVersionVariant(m) {
setStubsVersions(mctx, library, m)
createVersionVariations(mctx, library.allStubsVersions())
return
}
if ok {
if m.SplitPerApiLevel() && m.IsSdkVariant() {
createPerApiVersionVariations(mctx, m.MinSdkVersion())
}
Add support for versioned stubs. A cc_library or cc_library_shared can be configured to have stubs variants of the lib. cc_library_shared { name: "libfoo", srcs: ["foo.cpp"], stubs: { symbol_file: "foo.map.txt", versions: ["1", "2", "3"], }, } then, stubs variants of libfoo for version 1, 2, and 3 are created from foo.map.txt. Each version has the symbols from the map file where each symbol is annotated with the version that the symbol was introduced via the 'introduced=<ver>' syntax. The versions don't need to be in sync with the platform versions (e.g., P for 28). The versions are local to the library. For another library or executable to use the versioned stubs lib, use the new 'name#ver' syntax to specify the version: cc_binary { name: "test", .... shared_libs: ["libFoo#2"], } Internally, a new mutator 'version' is applied to all cc.Module objects. By default, a variant named 'impl' is created for the non-stub version. If the versions property is set, additional variations are created per a version with the mutable property BuildStubs set as true, which lets the compiler and the linker to build a stubs lib from the symbol file instead from the source files. This feature will be used to enforce stable interfaces among APEXs. When a lib foo in an APEX is depending on a lib bar in another APEX, then bar should have stable interface (in C lang) and foo should be depending on one of the stubs libs of bar. Only libraries in the same APEX as foo can link against non-stub version of it. Bug: 112672359 Test: m (cc_test added) Change-Id: I2488be0b9d7b7b8d7761234dc1c9c0e3add8601c
2018-10-15 15:25:07 +02:00
}
}
// maybeInjectBoringSSLHash adds a rule to run bssl_inject_hash on the output file if the module has the
// inject_bssl_hash or if any static library dependencies have inject_bssl_hash set. It returns the output path
// that the linked output file should be written to.
// TODO(b/137267623): Remove this in favor of a cc_genrule when they support operating on shared libraries.
func maybeInjectBoringSSLHash(ctx android.ModuleContext, outputFile android.ModuleOutPath,
inject *bool, fileName string) android.ModuleOutPath {
// TODO(b/137267623): Remove this in favor of a cc_genrule when they support operating on shared libraries.
injectBoringSSLHash := Bool(inject)
ctx.VisitDirectDeps(func(dep android.Module) {
if tag, ok := ctx.OtherModuleDependencyTag(dep).(libraryDependencyTag); ok && tag.static() {
if cc, ok := dep.(*Module); ok {
if library, ok := cc.linker.(*libraryDecorator); ok {
if Bool(library.Properties.Inject_bssl_hash) {
injectBoringSSLHash = true
}
}
}
}
})
if injectBoringSSLHash {
hashedOutputfile := outputFile
outputFile = android.PathForModuleOut(ctx, "unhashed", fileName)
rule := android.NewRuleBuilder(pctx, ctx)
rule.Command().
BuiltTool("bssl_inject_hash").
FlagWithInput("-in-object ", outputFile).
FlagWithOutput("-o ", hashedOutputfile)
rule.Build("injectCryptoHash", "inject crypto hash")
}
return outputFile
}
func bp2buildParseAbiCheckerProps(ctx android.TopDownMutatorContext, module *Module) bazelCcHeaderAbiCheckerAttributes {
lib, ok := module.linker.(*libraryDecorator)
if !ok {
return bazelCcHeaderAbiCheckerAttributes{}
}
abiChecker := lib.getHeaderAbiCheckerProperties(ctx)
abiCheckerAttrs := bazelCcHeaderAbiCheckerAttributes{
Abi_checker_enabled: abiChecker.Enabled,
Abi_checker_exclude_symbol_versions: abiChecker.Exclude_symbol_versions,
Abi_checker_exclude_symbol_tags: abiChecker.Exclude_symbol_tags,
Abi_checker_check_all_apis: abiChecker.Check_all_apis,
Abi_checker_diff_flags: abiChecker.Diff_flags,
}
if abiChecker.Symbol_file != nil {
symbolFile := android.BazelLabelForModuleSrcSingle(ctx, *abiChecker.Symbol_file)
abiCheckerAttrs.Abi_checker_symbol_file = &symbolFile
}
return abiCheckerAttrs
}
func sharedOrStaticLibraryBp2Build(ctx android.TopDownMutatorContext, module *Module, isStatic bool) {
baseAttributes := bp2BuildParseBaseProps(ctx, module)
compilerAttrs := baseAttributes.compilerAttributes
linkerAttrs := baseAttributes.linkerAttributes
exportedIncludes := bp2BuildParseExportedIncludes(ctx, module, &compilerAttrs.includes)
// Append shared/static{} stanza properties. These won't be specified on
// cc_library_* itself, but may be specified in cc_defaults that this module
// depends on.
libSharedOrStaticAttrs := bp2BuildParseLibProps(ctx, module, isStatic)
compilerAttrs.srcs.Append(libSharedOrStaticAttrs.Srcs)
compilerAttrs.cSrcs.Append(libSharedOrStaticAttrs.Srcs_c)
compilerAttrs.asSrcs.Append(libSharedOrStaticAttrs.Srcs_as)
compilerAttrs.copts.Append(libSharedOrStaticAttrs.Copts)
linkerAttrs.deps.Append(libSharedOrStaticAttrs.Deps)
linkerAttrs.implementationDeps.Append(libSharedOrStaticAttrs.Implementation_deps)
linkerAttrs.dynamicDeps.Append(libSharedOrStaticAttrs.Dynamic_deps)
linkerAttrs.implementationDynamicDeps.Append(libSharedOrStaticAttrs.Implementation_dynamic_deps)
linkerAttrs.systemDynamicDeps.Append(libSharedOrStaticAttrs.System_dynamic_deps)
asFlags := compilerAttrs.asFlags
if compilerAttrs.asSrcs.IsEmpty() {
// Skip asflags for BUILD file simplicity if there are no assembly sources.
asFlags = bazel.MakeStringListAttribute(nil)
}
commonAttrs := staticOrSharedAttributes{
Srcs: compilerAttrs.srcs,
Srcs_c: compilerAttrs.cSrcs,
Srcs_as: compilerAttrs.asSrcs,
Copts: compilerAttrs.copts,
Hdrs: compilerAttrs.hdrs,
Deps: linkerAttrs.deps,
Implementation_deps: linkerAttrs.implementationDeps,
Dynamic_deps: linkerAttrs.dynamicDeps,
Implementation_dynamic_deps: linkerAttrs.implementationDynamicDeps,
Whole_archive_deps: linkerAttrs.wholeArchiveDeps,
Implementation_whole_archive_deps: linkerAttrs.implementationWholeArchiveDeps,
System_dynamic_deps: linkerAttrs.systemDynamicDeps,
sdkAttributes: bp2BuildParseSdkAttributes(module),
Runtime_deps: linkerAttrs.runtimeDeps,
Native_coverage: baseAttributes.Native_coverage,
}
module.convertTidyAttributes(ctx, &commonAttrs.tidyAttributes)
var attrs interface{}
if isStatic {
commonAttrs.Deps.Add(baseAttributes.protoDependency)
attrs = &bazelCcLibraryStaticAttributes{
staticOrSharedAttributes: commonAttrs,
Rtti: compilerAttrs.rtti,
Stl: compilerAttrs.stl,
Cpp_std: compilerAttrs.cppStd,
C_std: compilerAttrs.cStd,
Export_includes: exportedIncludes.Includes,
Export_absolute_includes: exportedIncludes.AbsoluteIncludes,
Export_system_includes: exportedIncludes.SystemIncludes,
Local_includes: compilerAttrs.localIncludes,
Absolute_includes: compilerAttrs.absoluteIncludes,
Cppflags: compilerAttrs.cppFlags,
Conlyflags: compilerAttrs.conlyFlags,
Asflags: asFlags,
Features: baseAttributes.features,
}
} else {
commonAttrs.Dynamic_deps.Add(baseAttributes.protoDependency)
sharedLibAttrs := &bazelCcLibrarySharedAttributes{
staticOrSharedAttributes: commonAttrs,
Cppflags: compilerAttrs.cppFlags,
Conlyflags: compilerAttrs.conlyFlags,
Asflags: asFlags,
Linkopts: linkerAttrs.linkopts,
Use_version_lib: linkerAttrs.useVersionLib,
Rtti: compilerAttrs.rtti,
Stl: compilerAttrs.stl,
Cpp_std: compilerAttrs.cppStd,
C_std: compilerAttrs.cStd,
Export_includes: exportedIncludes.Includes,
Export_absolute_includes: exportedIncludes.AbsoluteIncludes,
Export_system_includes: exportedIncludes.SystemIncludes,
Local_includes: compilerAttrs.localIncludes,
Absolute_includes: compilerAttrs.absoluteIncludes,
Additional_linker_inputs: linkerAttrs.additionalLinkerInputs,
Strip: stripAttrsFromLinkerAttrs(&linkerAttrs),
Features: baseAttributes.features,
Suffix: compilerAttrs.suffix,
bazelCcHeaderAbiCheckerAttributes: bp2buildParseAbiCheckerProps(ctx, module),
Fdo_profile: compilerAttrs.fdoProfile,
}
if compilerAttrs.stubsSymbolFile != nil && len(compilerAttrs.stubsVersions.Value) > 0 {
sharedLibAttrs.Stubs_symbol_file = compilerAttrs.stubsSymbolFile
}
attrs = sharedLibAttrs
}
var modType string
if isStatic {
modType = "cc_library_static"
} else {
modType = "cc_library_shared"
createStubsBazelTargetIfNeeded(ctx, module, compilerAttrs, exportedIncludes, baseAttributes)
}
props := bazel.BazelTargetModuleProperties{
Rule_class: modType,
Bzl_load_location: fmt.Sprintf("//build/bazel/rules/cc:%s.bzl", modType),
}
tags := android.ApexAvailableTags(module)
ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: module.Name(), Tags: tags}, attrs)
}
// TODO(b/199902614): Can this be factored to share with the other Attributes?
type bazelCcLibraryStaticAttributes struct {
staticOrSharedAttributes
Use_version_lib bazel.BoolAttribute
Rtti bazel.BoolAttribute
Stl *string
Cpp_std *string
C_std *string
Export_includes bazel.StringListAttribute
Export_absolute_includes bazel.StringListAttribute
Export_system_includes bazel.StringListAttribute
Local_includes bazel.StringListAttribute
Absolute_includes bazel.StringListAttribute
Hdrs bazel.LabelListAttribute
Cppflags bazel.StringListAttribute
Conlyflags bazel.StringListAttribute
Asflags bazel.StringListAttribute
Features bazel.StringListAttribute
}
// TODO(b/199902614): Can this be factored to share with the other Attributes?
type bazelCcLibrarySharedAttributes struct {
staticOrSharedAttributes
Linkopts bazel.StringListAttribute
Use_version_lib bazel.BoolAttribute
Rtti bazel.BoolAttribute
Stl *string
Cpp_std *string
C_std *string
Export_includes bazel.StringListAttribute
Export_absolute_includes bazel.StringListAttribute
Export_system_includes bazel.StringListAttribute
Local_includes bazel.StringListAttribute
Absolute_includes bazel.StringListAttribute
Hdrs bazel.LabelListAttribute
Strip stripAttributes
Additional_linker_inputs bazel.LabelListAttribute
Cppflags bazel.StringListAttribute
Conlyflags bazel.StringListAttribute
Asflags bazel.StringListAttribute
Features bazel.StringListAttribute
Stubs_symbol_file *string
Inject_bssl_hash bazel.BoolAttribute
Suffix bazel.StringAttribute
bazelCcHeaderAbiCheckerAttributes
Fdo_profile bazel.LabelAttribute
}
type bazelCcStubSuiteAttributes struct {
Symbol_file *string
Versions bazel.StringListAttribute
Export_includes bazel.StringListAttribute
Source_library bazel.LabelAttribute
Soname *string
Deps bazel.LabelListAttribute
}
type bazelCcHeaderAbiCheckerAttributes struct {
Abi_checker_enabled *bool
Abi_checker_symbol_file *bazel.Label
Abi_checker_exclude_symbol_versions []string
Abi_checker_exclude_symbol_tags []string
Abi_checker_check_all_apis *bool
Abi_checker_diff_flags []string
}