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variable.go
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// Copyright 2015 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 android
import (
"fmt"
"reflect"
"runtime"
"strings"
"android/soong/bazel"
"github.com/google/blueprint/proptools"
)
func init() {
registerVariableBuildComponents(InitRegistrationContext)
}
func registerVariableBuildComponents(ctx RegistrationContext) {
ctx.PreDepsMutators(func(ctx RegisterMutatorsContext) {
ctx.BottomUp("variable", VariableMutator).Parallel()
})
}
var PrepareForTestWithVariables = FixtureRegisterWithContext(registerVariableBuildComponents)
type variableProperties struct {
Product_variables struct {
Platform_sdk_version struct {
Asflags []string
Cflags []string
Cmd *string
}
Platform_sdk_version_or_codename struct {
Java_resource_dirs []string
}
Platform_sdk_extension_version struct {
Cmd *string
}
Platform_version_name struct {
Base_dir *string
}
// unbundled_build is a catch-all property to annotate modules that don't build in one or
// more unbundled branches, usually due to dependencies missing from the manifest.
Unbundled_build struct {
Enabled *bool `android:"arch_variant"`
} `android:"arch_variant"`
// similar to `Unbundled_build`, but `Always_use_prebuilt_sdks` means that it uses prebuilt
// sdk specifically.
Always_use_prebuilt_sdks struct {
Enabled *bool `android:"arch_variant"`
} `android:"arch_variant"`
Malloc_not_svelte struct {
Cflags []string `android:"arch_variant"`
Shared_libs []string `android:"arch_variant"`
Whole_static_libs []string `android:"arch_variant"`
Static_libs []string `android:"arch_variant"`
Exclude_static_libs []string `android:"arch_variant"`
Srcs []string `android:"arch_variant"`
Header_libs []string `android:"arch_variant"`
} `android:"arch_variant"`
Malloc_not_svelte_libc32 struct {
Cflags []string `android:"arch_variant"`
Shared_libs []string `android:"arch_variant"`
Whole_static_libs []string `android:"arch_variant"`
Exclude_static_libs []string `android:"arch_variant"`
} `android:"arch_variant"`
Malloc_zero_contents struct {
Cflags []string `android:"arch_variant"`
} `android:"arch_variant"`
Malloc_pattern_fill_contents struct {
Cflags []string `android:"arch_variant"`
} `android:"arch_variant"`
Safestack struct {
Cflags []string `android:"arch_variant"`
} `android:"arch_variant"`
Binder32bit struct {
Cflags []string
}
Override_rs_driver struct {
Cflags []string
}
// treble_linker_namespaces is true when the system/vendor linker namespace separation is
// enabled.
Treble_linker_namespaces struct {
Cflags []string
}
// enforce_vintf_manifest is true when a device is required to have a vintf manifest.
Enforce_vintf_manifest struct {
Cflags []string
}
Build_from_text_stub struct {
Static_libs []string
Exclude_static_libs []string
}
// debuggable is true for eng and userdebug builds, and can be used to turn on additional
// debugging features that don't significantly impact runtime behavior. userdebug builds
// are used for dogfooding and performance testing, and should be as similar to user builds
// as possible.
Debuggable struct {
Cflags []string
Cppflags []string
Init_rc []string
Required []string
Host_required []string
Target_required []string
Strip struct {
All *bool
Keep_symbols *bool
Keep_symbols_and_debug_frame *bool
}
Static_libs []string
Whole_static_libs []string
Shared_libs []string
Cmdline []string
Srcs []string
Exclude_srcs []string
Cmd *string
}
// eng is true for -eng builds, and can be used to turn on additional heavyweight debugging
// features.
Eng struct {
Cflags []string
Cppflags []string
Init_rc []string
Lto struct {
Never *bool
}
Sanitize struct {
Address *bool
}
Optimize struct {
Enabled *bool
}
}
Uml struct {
Cppflags []string
}
Arc struct {
Cflags []string `android:"arch_variant"`
Exclude_srcs []string `android:"arch_variant"`
Header_libs []string `android:"arch_variant"`
Include_dirs []string `android:"arch_variant"`
Shared_libs []string `android:"arch_variant"`
Static_libs []string `android:"arch_variant"`
Srcs []string `android:"arch_variant"`
Whole_static_libs []string `android:"arch_variant"`
} `android:"arch_variant"`
Native_coverage struct {
Src *string `android:"arch_variant"`
Srcs []string `android:"arch_variant"`
Exclude_srcs []string `android:"arch_variant"`
} `android:"arch_variant"`
// release_aidl_use_unfrozen is "true" when a device can
// use the unfrozen versions of AIDL interfaces.
Release_aidl_use_unfrozen struct {
Cflags []string
Cmd *string
Vintf_fragments []string
}
} `android:"arch_variant"`
}
var defaultProductVariables interface{} = variableProperties{}
type ProductVariables struct {
// Suffix to add to generated Makefiles
Make_suffix *string `json:",omitempty"`
BuildId *string `json:",omitempty"`
BuildNumberFile *string `json:",omitempty"`
Platform_version_name *string `json:",omitempty"`
Platform_sdk_version *int `json:",omitempty"`
Platform_sdk_codename *string `json:",omitempty"`
Platform_sdk_version_or_codename *string `json:",omitempty"`
Platform_sdk_final *bool `json:",omitempty"`
Platform_sdk_extension_version *int `json:",omitempty"`
Platform_base_sdk_extension_version *int `json:",omitempty"`
Platform_version_active_codenames []string `json:",omitempty"`
Platform_version_all_preview_codenames []string `json:",omitempty"`
Platform_vndk_version *string `json:",omitempty"`
Platform_systemsdk_versions []string `json:",omitempty"`
Platform_security_patch *string `json:",omitempty"`
Platform_preview_sdk_version *string `json:",omitempty"`
Platform_min_supported_target_sdk_version *string `json:",omitempty"`
Platform_base_os *string `json:",omitempty"`
Platform_version_last_stable *string `json:",omitempty"`
Platform_version_known_codenames *string `json:",omitempty"`
DeviceName *string `json:",omitempty"`
DeviceProduct *string `json:",omitempty"`
DeviceArch *string `json:",omitempty"`
DeviceArchVariant *string `json:",omitempty"`
DeviceCpuVariant *string `json:",omitempty"`
DeviceAbi []string `json:",omitempty"`
DeviceVndkVersion *string `json:",omitempty"`
DeviceCurrentApiLevelForVendorModules *string `json:",omitempty"`
DeviceSystemSdkVersions []string `json:",omitempty"`
DeviceMaxPageSizeSupported *string `json:",omitempty"`
DeviceNoBionicPageSizeMacro *bool `json:",omitempty"`
VendorApiLevel *string `json:",omitempty"`
RecoverySnapshotVersion *string `json:",omitempty"`
DeviceSecondaryArch *string `json:",omitempty"`
DeviceSecondaryArchVariant *string `json:",omitempty"`
DeviceSecondaryCpuVariant *string `json:",omitempty"`
DeviceSecondaryAbi []string `json:",omitempty"`
NativeBridgeArch *string `json:",omitempty"`
NativeBridgeArchVariant *string `json:",omitempty"`
NativeBridgeCpuVariant *string `json:",omitempty"`
NativeBridgeAbi []string `json:",omitempty"`
NativeBridgeRelativePath *string `json:",omitempty"`
NativeBridgeSecondaryArch *string `json:",omitempty"`
NativeBridgeSecondaryArchVariant *string `json:",omitempty"`
NativeBridgeSecondaryCpuVariant *string `json:",omitempty"`
NativeBridgeSecondaryAbi []string `json:",omitempty"`
NativeBridgeSecondaryRelativePath *string `json:",omitempty"`
HostArch *string `json:",omitempty"`
HostSecondaryArch *string `json:",omitempty"`
HostMusl *bool `json:",omitempty"`
CrossHost *string `json:",omitempty"`
CrossHostArch *string `json:",omitempty"`
CrossHostSecondaryArch *string `json:",omitempty"`
DeviceResourceOverlays []string `json:",omitempty"`
ProductResourceOverlays []string `json:",omitempty"`
EnforceRROTargets []string `json:",omitempty"`
EnforceRROExcludedOverlays []string `json:",omitempty"`
AAPTCharacteristics *string `json:",omitempty"`
AAPTConfig []string `json:",omitempty"`
AAPTPreferredConfig *string `json:",omitempty"`
AAPTPrebuiltDPI []string `json:",omitempty"`
DefaultAppCertificate *string `json:",omitempty"`
MainlineSepolicyDevCertificates *string `json:",omitempty"`
AppsDefaultVersionName *string `json:",omitempty"`
Allow_missing_dependencies *bool `json:",omitempty"`
Unbundled_build *bool `json:",omitempty"`
Unbundled_build_apps []string `json:",omitempty"`
Unbundled_build_image *bool `json:",omitempty"`
Always_use_prebuilt_sdks *bool `json:",omitempty"`
Skip_boot_jars_check *bool `json:",omitempty"`
Malloc_not_svelte *bool `json:",omitempty"`
Malloc_not_svelte_libc32 *bool `json:",omitempty"`
Malloc_zero_contents *bool `json:",omitempty"`
Malloc_pattern_fill_contents *bool `json:",omitempty"`
Safestack *bool `json:",omitempty"`
HostStaticBinaries *bool `json:",omitempty"`
Binder32bit *bool `json:",omitempty"`
UseGoma *bool `json:",omitempty"`
UseRBE *bool `json:",omitempty"`
UseRBEJAVAC *bool `json:",omitempty"`
UseRBER8 *bool `json:",omitempty"`
UseRBED8 *bool `json:",omitempty"`
Debuggable *bool `json:",omitempty"`
Eng *bool `json:",omitempty"`
Treble_linker_namespaces *bool `json:",omitempty"`
Enforce_vintf_manifest *bool `json:",omitempty"`
Uml *bool `json:",omitempty"`
Arc *bool `json:",omitempty"`
MinimizeJavaDebugInfo *bool `json:",omitempty"`
Build_from_text_stub *bool `json:",omitempty"`
Check_elf_files *bool `json:",omitempty"`
UncompressPrivAppDex *bool `json:",omitempty"`
ModulesLoadedByPrivilegedModules []string `json:",omitempty"`
BootJars ConfiguredJarList `json:",omitempty"`
ApexBootJars ConfiguredJarList `json:",omitempty"`
IntegerOverflowExcludePaths []string `json:",omitempty"`
EnableCFI *bool `json:",omitempty"`
CFIExcludePaths []string `json:",omitempty"`
CFIIncludePaths []string `json:",omitempty"`
DisableScudo *bool `json:",omitempty"`
MemtagHeapExcludePaths []string `json:",omitempty"`
MemtagHeapAsyncIncludePaths []string `json:",omitempty"`
MemtagHeapSyncIncludePaths []string `json:",omitempty"`
HWASanIncludePaths []string `json:",omitempty"`
HWASanExcludePaths []string `json:",omitempty"`
VendorPath *string `json:",omitempty"`
OdmPath *string `json:",omitempty"`
ProductPath *string `json:",omitempty"`
SystemExtPath *string `json:",omitempty"`
ClangTidy *bool `json:",omitempty"`
TidyChecks *string `json:",omitempty"`
JavaCoveragePaths []string `json:",omitempty"`
JavaCoverageExcludePaths []string `json:",omitempty"`
GcovCoverage *bool `json:",omitempty"`
ClangCoverage *bool `json:",omitempty"`
NativeCoveragePaths []string `json:",omitempty"`
NativeCoverageExcludePaths []string `json:",omitempty"`
ClangCoverageContinuousMode *bool `json:",omitempty"`
// Set by NewConfig
Native_coverage *bool `json:",omitempty"`
SanitizeHost []string `json:",omitempty"`
SanitizeDevice []string `json:",omitempty"`
SanitizeDeviceDiag []string `json:",omitempty"`
SanitizeDeviceArch []string `json:",omitempty"`
ArtUseReadBarrier *bool `json:",omitempty"`
BtConfigIncludeDir *string `json:",omitempty"`
Override_rs_driver *string `json:",omitempty"`
DeviceKernelHeaders []string `json:",omitempty"`
TargetSpecificHeaderPath *string `json:",omitempty"`
ExtraVndkVersions []string `json:",omitempty"`
NamespacesToExport []string `json:",omitempty"`
PgoAdditionalProfileDirs []string `json:",omitempty"`
VndkUseCoreVariant *bool `json:",omitempty"`
VndkSnapshotBuildArtifacts *bool `json:",omitempty"`
DirectedVendorSnapshot bool `json:",omitempty"`
VendorSnapshotModules map[string]bool `json:",omitempty"`
DirectedRecoverySnapshot bool `json:",omitempty"`
RecoverySnapshotModules map[string]bool `json:",omitempty"`
VendorSnapshotDirsIncluded []string `json:",omitempty"`
VendorSnapshotDirsExcluded []string `json:",omitempty"`
RecoverySnapshotDirsExcluded []string `json:",omitempty"`
RecoverySnapshotDirsIncluded []string `json:",omitempty"`
HostFakeSnapshotEnabled bool `json:",omitempty"`
MultitreeUpdateMeta bool `json:",omitempty"`
BoardVendorSepolicyDirs []string `json:",omitempty"`
BoardOdmSepolicyDirs []string `json:",omitempty"`
SystemExtPublicSepolicyDirs []string `json:",omitempty"`
SystemExtPrivateSepolicyDirs []string `json:",omitempty"`
BoardSepolicyM4Defs []string `json:",omitempty"`
BoardSepolicyVers *string `json:",omitempty"`
PlatformSepolicyVersion *string `json:",omitempty"`
SystemExtSepolicyPrebuiltApiDir *string `json:",omitempty"`
ProductSepolicyPrebuiltApiDir *string `json:",omitempty"`
PlatformSepolicyCompatVersions []string `json:",omitempty"`
VendorVars map[string]map[string]string `json:",omitempty"`
Ndk_abis *bool `json:",omitempty"`
TrimmedApex *bool `json:",omitempty"`
ForceApexSymlinkOptimization *bool `json:",omitempty"`
CompressedApex *bool `json:",omitempty"`
Aml_abis *bool `json:",omitempty"`
DexpreoptGlobalConfig *string `json:",omitempty"`
WithDexpreopt bool `json:",omitempty"`
ManifestPackageNameOverrides []string `json:",omitempty"`
CertificateOverrides []string `json:",omitempty"`
PackageNameOverrides []string `json:",omitempty"`
ConfiguredJarLocationOverrides []string `json:",omitempty"`
ApexGlobalMinSdkVersionOverride *string `json:",omitempty"`
EnforceSystemCertificate *bool `json:",omitempty"`
EnforceSystemCertificateAllowList []string `json:",omitempty"`
ProductHiddenAPIStubs []string `json:",omitempty"`
ProductHiddenAPIStubsSystem []string `json:",omitempty"`
ProductHiddenAPIStubsTest []string `json:",omitempty"`
ProductPublicSepolicyDirs []string `json:",omitempty"`
ProductPrivateSepolicyDirs []string `json:",omitempty"`
TargetFSConfigGen []string `json:",omitempty"`
EnforceProductPartitionInterface *bool `json:",omitempty"`
EnforceInterPartitionJavaSdkLibrary *bool `json:",omitempty"`
InterPartitionJavaLibraryAllowList []string `json:",omitempty"`
BoardUsesRecoveryAsBoot *bool `json:",omitempty"`
BoardKernelBinaries []string `json:",omitempty"`
BoardKernelModuleInterfaceVersions []string `json:",omitempty"`
BoardMoveRecoveryResourcesToVendorBoot *bool `json:",omitempty"`
PrebuiltHiddenApiDir *string `json:",omitempty"`
ShippingApiLevel *string `json:",omitempty"`
BuildBrokenPluginValidation []string `json:",omitempty"`
BuildBrokenClangAsFlags bool `json:",omitempty"`
BuildBrokenClangCFlags bool `json:",omitempty"`
BuildBrokenClangProperty bool `json:",omitempty"`
GenruleSandboxing *bool `json:",omitempty"`
BuildBrokenEnforceSyspropOwner bool `json:",omitempty"`
BuildBrokenTrebleSyspropNeverallow bool `json:",omitempty"`
BuildBrokenUsesSoongPython2Modules bool `json:",omitempty"`
BuildBrokenVendorPropertyNamespace bool `json:",omitempty"`
BuildBrokenIncorrectPartitionImages bool `json:",omitempty"`
BuildBrokenInputDirModules []string `json:",omitempty"`
BuildBrokenDontCheckSystemSdk bool `json:",omitempty"`
BuildWarningBadOptionalUsesLibsAllowlist []string `json:",omitempty"`
BuildDebugfsRestrictionsEnabled bool `json:",omitempty"`
RequiresInsecureExecmemForSwiftshader bool `json:",omitempty"`
SelinuxIgnoreNeverallows bool `json:",omitempty"`
Release_aidl_use_unfrozen *bool `json:",omitempty"`
SepolicyFreezeTestExtraDirs []string `json:",omitempty"`
SepolicyFreezeTestExtraPrebuiltDirs []string `json:",omitempty"`
GenerateAidlNdkPlatformBackend bool `json:",omitempty"`
IgnorePrefer32OnDevice bool `json:",omitempty"`
IncludeTags []string `json:",omitempty"`
SourceRootDirs []string `json:",omitempty"`
AfdoProfiles []string `json:",omitempty"`
ProductManufacturer string `json:",omitempty"`
ProductBrand string `json:",omitempty"`
BuildVersionTags []string `json:",omitempty"`
ReleaseVersion string `json:",omitempty"`
ReleaseAconfigValueSets []string `json:",omitempty"`
ReleaseAconfigFlagDefaultPermission string `json:",omitempty"`
ReleaseDefaultModuleBuildFromSource *bool `json:",omitempty"`
KeepVndk *bool `json:",omitempty"`
CheckVendorSeappViolations *bool `json:",omitempty"`
// PartitionVarsForBazelMigrationOnlyDoNotUse are extra variables that are used to define the
// partition images. They should not be read from soong modules.
PartitionVarsForBazelMigrationOnlyDoNotUse PartitionVariables `json:",omitempty"`
BuildFlags map[string]string `json:",omitempty"`
BuildFromSourceStub *bool `json:",omitempty"`
BuildIgnoreApexContributionContents []string `json:",omitempty"`
HiddenapiExportableStubs *bool `json:",omitempty"`
ExportRuntimeApis *bool `json:",omitempty"`
}
type PartitionQualifiedVariablesType struct {
BuildingImage bool `json:",omitempty"`
BoardErofsCompressor string `json:",omitempty"`
BoardErofsCompressHints string `json:",omitempty"`
BoardErofsPclusterSize string `json:",omitempty"`
BoardExtfsInodeCount string `json:",omitempty"`
BoardExtfsRsvPct string `json:",omitempty"`
BoardF2fsSloadCompressFlags string `json:",omitempty"`
BoardFileSystemCompress string `json:",omitempty"`
BoardFileSystemType string `json:",omitempty"`
BoardJournalSize string `json:",omitempty"`
BoardPartitionReservedSize string `json:",omitempty"`
BoardPartitionSize string `json:",omitempty"`
BoardSquashfsBlockSize string `json:",omitempty"`
BoardSquashfsCompressor string `json:",omitempty"`
BoardSquashfsCompressorOpt string `json:",omitempty"`
BoardSquashfsDisable4kAlign string `json:",omitempty"`
ProductBaseFsPath string `json:",omitempty"`
ProductHeadroom string `json:",omitempty"`
ProductVerityPartition string `json:",omitempty"`
BoardAvbAddHashtreeFooterArgs string `json:",omitempty"`
BoardAvbKeyPath string `json:",omitempty"`
BoardAvbAlgorithm string `json:",omitempty"`
BoardAvbRollbackIndex string `json:",omitempty"`
BoardAvbRollbackIndexLocation string `json:",omitempty"`
}
type PartitionVariables struct {
ProductDirectory string `json:",omitempty"`
PartitionQualifiedVariables map[string]PartitionQualifiedVariablesType
TargetUserimagesUseExt2 bool `json:",omitempty"`
TargetUserimagesUseExt3 bool `json:",omitempty"`
TargetUserimagesUseExt4 bool `json:",omitempty"`
TargetUserimagesSparseExtDisabled bool `json:",omitempty"`
TargetUserimagesSparseErofsDisabled bool `json:",omitempty"`
TargetUserimagesSparseSquashfsDisabled bool `json:",omitempty"`
TargetUserimagesSparseF2fsDisabled bool `json:",omitempty"`
BoardErofsCompressor string `json:",omitempty"`
BoardErofsCompressorHints string `json:",omitempty"`
BoardErofsPclusterSize string `json:",omitempty"`
BoardErofsShareDupBlocks string `json:",omitempty"`
BoardErofsUseLegacyCompression string `json:",omitempty"`
BoardExt4ShareDupBlocks string `json:",omitempty"`
BoardFlashLogicalBlockSize string `json:",omitempty"`
BoardFlashEraseBlockSize string `json:",omitempty"`
BoardUsesRecoveryAsBoot bool `json:",omitempty"`
ProductUseDynamicPartitionSize bool `json:",omitempty"`
CopyImagesForTargetFilesZip bool `json:",omitempty"`
BoardAvbEnable bool `json:",omitempty"`
ProductPackages []string `json:",omitempty"`
}
func boolPtr(v bool) *bool {
return &v
}
func intPtr(v int) *int {
return &v
}
func stringPtr(v string) *string {
return &v
}
func (v *ProductVariables) SetDefaultConfig() {
*v = ProductVariables{
BuildNumberFile: stringPtr("build_number.txt"),
Platform_version_name: stringPtr("S"),
Platform_base_sdk_extension_version: intPtr(30),
Platform_sdk_version: intPtr(30),
Platform_sdk_codename: stringPtr("S"),
Platform_sdk_final: boolPtr(false),
Platform_version_active_codenames: []string{"S"},
Platform_version_all_preview_codenames: []string{"S"},
Platform_vndk_version: stringPtr("S"),
HostArch: stringPtr("x86_64"),
HostSecondaryArch: stringPtr("x86"),
DeviceName: stringPtr("generic_arm64"),
DeviceProduct: stringPtr("aosp_arm-eng"),
DeviceArch: stringPtr("arm64"),
DeviceArchVariant: stringPtr("armv8-a"),
DeviceCpuVariant: stringPtr("generic"),
DeviceAbi: []string{"arm64-v8a"},
DeviceSecondaryArch: stringPtr("arm"),
DeviceSecondaryArchVariant: stringPtr("armv8-a"),
DeviceSecondaryCpuVariant: stringPtr("generic"),
DeviceSecondaryAbi: []string{"armeabi-v7a", "armeabi"},
DeviceMaxPageSizeSupported: stringPtr("4096"),
DeviceNoBionicPageSizeMacro: boolPtr(false),
AAPTConfig: []string{"normal", "large", "xlarge", "hdpi", "xhdpi", "xxhdpi"},
AAPTPreferredConfig: stringPtr("xhdpi"),
AAPTCharacteristics: stringPtr("nosdcard"),
AAPTPrebuiltDPI: []string{"xhdpi", "xxhdpi"},
Malloc_not_svelte: boolPtr(true),
Malloc_not_svelte_libc32: boolPtr(true),
Malloc_zero_contents: boolPtr(true),
Malloc_pattern_fill_contents: boolPtr(false),
Safestack: boolPtr(false),
TrimmedApex: boolPtr(false),
Build_from_text_stub: boolPtr(false),
BootJars: ConfiguredJarList{apexes: []string{}, jars: []string{}},
ApexBootJars: ConfiguredJarList{apexes: []string{}, jars: []string{}},
}
if runtime.GOOS == "linux" {
v.CrossHost = stringPtr("windows")
v.CrossHostArch = stringPtr("x86")
v.CrossHostSecondaryArch = stringPtr("x86_64")
}
}
func (this *ProductVariables) GetBuildFlagBool(flag string) bool {
val, ok := this.BuildFlags[flag]
if !ok {
return false
}
return val == "true"
}
// ProductConfigContext requires the access to the Module to get product config properties.
type ProductConfigContext interface {
Module() Module
}
// ProductConfigOrSoongConfigProperty represents either a soong config variable + its value
// or a product config variable. You can get both a ConfigurationAxis and a SelectKey from it
// for use in bazel attributes. ProductVariableProperties() will return a map from properties ->
// this interface -> property structs for use in bp2build converters
type ProductConfigOrSoongConfigProperty interface {
// Name of the product variable or soong config variable
Name() string
// AlwaysEmit returns true for soong config variables but false for product variables. This
// is intended to indicate if we need to always emit empty lists in the select statements.
AlwaysEmit() bool
// ConfigurationAxis returns the bazel.ConfigurationAxis that represents this variable. The
// configuration axis will change depending on the variable and whether it's arch/os variant
// as well.
ConfigurationAxis() bazel.ConfigurationAxis
// SelectKey returns a string that represents the key of a select branch, however, it is not
// actually the real label written out to the build file.
// this.ConfigurationAxis().SelectKey(this.SelectKey()) will give the actual label.
SelectKey() string
}
// ProductConfigProperty represents a product config variable, and if it is arch-variant or not.
type ProductConfigProperty struct {
// The name of the product variable, e.g. "safestack", "malloc_not_svelte",
// "board"
name string
arch string
}
func (p ProductConfigProperty) Name() string {
return p.name
}
func (p ProductConfigProperty) AlwaysEmit() bool {
return false
}
func (p ProductConfigProperty) ConfigurationAxis() bazel.ConfigurationAxis {
return bazel.ProductVariableConfigurationAxis(p.arch != "", p.name+"__"+p.arch)
}
func (p ProductConfigProperty) SelectKey() string {
if p.arch == "" {
return strings.ToLower(p.name)
} else {
return strings.ToLower(p.name + "-" + p.arch)
}
}
// SoongConfigProperty represents a soong config variable, its value if it's a string variable,
// and if it's dependent on the OS or not
type SoongConfigProperty struct {
name string
namespace string
// Can be an empty string for bool/value soong config variables
value string
// If there is a target: field inside a soong config property struct, the os that it selects
// on will be represented here.
os string
}
func (p SoongConfigProperty) Name() string {
return p.name
}
func (p SoongConfigProperty) AlwaysEmit() bool {
return true
}
func (p SoongConfigProperty) ConfigurationAxis() bazel.ConfigurationAxis {
return bazel.ProductVariableConfigurationAxis(false, p.namespace+"__"+p.name+"__"+p.os)
}
// SelectKey returns the literal string that represents this variable in a BUILD
// select statement.
func (p SoongConfigProperty) SelectKey() string {
// p.value being conditions_default can happen with or without a desired os. When not using
// an os, we want to emit literally just //conditions:default in the select statement, but
// when using an os, we want to emit namespace__name__conditions_default__os, so that
// the branch is only taken if the variable is not set, and we're on the desired os.
// ConfigurationAxis#SelectKey will map the conditions_default result of this function to
// //conditions:default.
if p.value == bazel.ConditionsDefaultConfigKey && p.os == "" {
return bazel.ConditionsDefaultConfigKey
}
parts := []string{p.namespace, p.name}
if p.value != "" && p.value != bazel.ConditionsDefaultSelectKey {
parts = append(parts, p.value)
}
if p.os != "" {
parts = append(parts, p.os)
}
// e.g. acme__feature1, android__board__soc_a, my_namespace__my_variables__my_value__my_os
return strings.ToLower(strings.Join(parts, "__"))
}
// ProductConfigProperties is a map of maps to group property values according
// their property name and the product config variable they're set under.
//
// The outer map key is the name of the property, like "cflags".
//
// The inner map key is a ProductConfigProperty, which is a struct of product
// variable name, namespace, and the "full configuration" of the product
// variable.
//
// e.g. product variable name: board, namespace: acme, full config: vendor_chip_foo
//
// The value of the map is the interface{} representing the value of the
// property, like ["-DDEFINES"] for cflags.
type ProductConfigProperties map[string]map[ProductConfigOrSoongConfigProperty]interface{}
func (p *ProductConfigProperties) AddProductConfigProperty(
propertyName, productVariableName, arch string, propertyValue interface{}) {
productConfigProp := ProductConfigProperty{
name: productVariableName, // e.g. size, feature1, feature2, FEATURE3, board
arch: arch, // e.g. "", x86, arm64
}
p.AddEitherProperty(propertyName, productConfigProp, propertyValue)
}
func (p *ProductConfigProperties) AddSoongConfigProperty(
propertyName, namespace, variableName, value, os string, propertyValue interface{}) {
soongConfigProp := SoongConfigProperty{
namespace: namespace,
name: variableName, // e.g. size, feature1, feature2, FEATURE3, board
value: value,
os: os, // e.g. android, linux_x86
}
p.AddEitherProperty(propertyName, soongConfigProp, propertyValue)
}
func (p *ProductConfigProperties) AddEitherProperty(
propertyName string, key ProductConfigOrSoongConfigProperty, propertyValue interface{}) {
if (*p)[propertyName] == nil {
(*p)[propertyName] = make(map[ProductConfigOrSoongConfigProperty]interface{})
}
if existing, ok := (*p)[propertyName][key]; ok {
switch dst := existing.(type) {
case []string:
src, ok := propertyValue.([]string)
if !ok {
panic("Conflicting types")
}
dst = append(dst, src...)
(*p)[propertyName][key] = dst
default:
if existing != propertyValue {
panic(fmt.Errorf("TODO: handle merging value %#v", existing))
}
}
} else {
(*p)[propertyName][key] = propertyValue
}
}
// maybeExtractConfigVarProp attempts to read this value as a config var struct
// wrapped by interfaces and ptrs. If it's not the right type, the second return
// value is false.
func maybeExtractConfigVarProp(v reflect.Value) (reflect.Value, bool) {
if v.Kind() == reflect.Interface {
// The conditions_default value can be either
// 1) an ptr to an interface of a struct (bool config variables and product variables)
// 2) an interface of 1) (config variables with nested structs, like string vars)
v = v.Elem()
}
if v.Kind() != reflect.Ptr {
return v, false
}
v = reflect.Indirect(v)
if v.Kind() == reflect.Interface {
// Extract the struct from the interface
v = v.Elem()
}
if !v.IsValid() {
return v, false
}
if v.Kind() != reflect.Struct {
return v, false
}
return v, true
}
func (productConfigProperties *ProductConfigProperties) AddProductConfigProperties(variableValues reflect.Value, arch string) {
// Example of product_variables:
//
// product_variables: {
// malloc_not_svelte: {
// shared_libs: ["malloc_not_svelte_shared_lib"],
// whole_static_libs: ["malloc_not_svelte_whole_static_lib"],
// exclude_static_libs: [
// "malloc_not_svelte_static_lib_excludes",
// "malloc_not_svelte_whole_static_lib_excludes",
// ],
// },
// },
for i := 0; i < variableValues.NumField(); i++ {
// e.g. Platform_sdk_version, Unbundled_build, Malloc_not_svelte, etc.
productVariableName := variableValues.Type().Field(i).Name
variableValue := variableValues.Field(i)
// Check if any properties were set for the module
if variableValue.IsZero() {
// e.g. feature1: {}, malloc_not_svelte: {}
continue
}
for j := 0; j < variableValue.NumField(); j++ {
property := variableValue.Field(j)
// e.g. Asflags, Cflags, Enabled, etc.
propertyName := variableValue.Type().Field(j).Name
if property.Kind() != reflect.Interface {
productConfigProperties.AddProductConfigProperty(propertyName, productVariableName, arch, property.Interface())
}
}
}
}
func (productConfigProperties *ProductConfigProperties) AddSoongConfigProperties(namespace string, soongConfigVariablesStruct reflect.Value) error {
//
// Example of soong_config_variables:
//
// soong_config_variables: {
// feature1: {
// conditions_default: {
// ...
// },
// cflags: ...
// },
// feature2: {
// cflags: ...
// conditions_default: {
// ...
// },
// },
// board: {
// soc_a: {
// ...
// },
// soc_b: {
// ...
// },
// soc_c: {},
// conditions_default: {
// ...
// },
// },
// }
for i := 0; i < soongConfigVariablesStruct.NumField(); i++ {
// e.g. feature1, feature2, board
variableName := soongConfigVariablesStruct.Type().Field(i).Name
variableStruct := soongConfigVariablesStruct.Field(i)
// Check if any properties were set for the module
if variableStruct.IsZero() {
// e.g. feature1: {}
continue
}
// Unlike product variables, config variables require a few more
// indirections to extract the struct from the reflect.Value.
if v, ok := maybeExtractConfigVarProp(variableStruct); ok {
variableStruct = v
} else if !v.IsValid() {
// Skip invalid variables which may not used, else leads to panic
continue
}
for j := 0; j < variableStruct.NumField(); j++ {
propertyOrStruct := variableStruct.Field(j)
// propertyOrValueName can either be:
// - A property, like: Asflags, Cflags, Enabled, etc.
// - A soong config string variable's value, like soc_a, soc_b, soc_c in the example above
// - "conditions_default"
propertyOrValueName := variableStruct.Type().Field(j).Name
// If the property wasn't set, no need to pass it along
if propertyOrStruct.IsZero() {
continue
}
if v, ok := maybeExtractConfigVarProp(propertyOrStruct); ok {
// The field is a struct, which is used by:
// 1) soong_config_string_variables
//
// soc_a: {
// cflags: ...,
// }
//
// soc_b: {
// cflags: ...,
// }
//
// 2) conditions_default structs for all soong config variable types.
//
// conditions_default: {
// cflags: ...,
// static_libs: ...
// }
//
// This means that propertyOrValueName is either conditions_default, or a soong
// config string variable's value.
field := v
// Iterate over fields of this struct prop.
for k := 0; k < field.NumField(); k++ {
// For product variables, zero values are irrelevant; however, for soong config variables,
// empty values are relevant because there can also be a conditions default which is not
// applied for empty variables.
if field.Field(k).IsZero() && namespace == "" {
continue
}
propertyName := field.Type().Field(k).Name
if propertyName == "Target" {
productConfigProperties.AddSoongConfigPropertiesFromTargetStruct(namespace, variableName, proptools.PropertyNameForField(propertyOrValueName), field.Field(k))
} else if propertyName == "Arch" || propertyName == "Multilib" {
return fmt.Errorf("Arch/Multilib are not currently supported in soong config variable structs")
} else {
productConfigProperties.AddSoongConfigProperty(propertyName, namespace, variableName, proptools.PropertyNameForField(propertyOrValueName), "", field.Field(k).Interface())
}
}
} else if propertyOrStruct.Kind() != reflect.Interface {
// If not an interface, then this is not a conditions_default or
// a struct prop. That is, this is a bool/value config variable.
if propertyOrValueName == "Target" {
productConfigProperties.AddSoongConfigPropertiesFromTargetStruct(namespace, variableName, "", propertyOrStruct)
} else if propertyOrValueName == "Arch" || propertyOrValueName == "Multilib" {
return fmt.Errorf("Arch/Multilib are not currently supported in soong config variable structs")
} else {
productConfigProperties.AddSoongConfigProperty(propertyOrValueName, namespace, variableName, "", "", propertyOrStruct.Interface())
}
}
}
}
return nil
}
func (productConfigProperties *ProductConfigProperties) AddSoongConfigPropertiesFromTargetStruct(namespace, soongConfigVariableName string, soongConfigVariableValue string, targetStruct reflect.Value) {
// targetStruct will be a struct with fields like "android", "host", "arm", "x86",
// "android_arm", etc. The values of each of those fields will be a regular property struct.
for i := 0; i < targetStruct.NumField(); i++ {