platform_build_soong/cc/bp2build.go
2023-08-18 00:06:39 +00:00

2052 lines
81 KiB
Go

// Copyright 2021 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cc
import (
"fmt"
"path/filepath"
"strings"
"sync"
"android/soong/android"
"android/soong/bazel"
"android/soong/cc/config"
"android/soong/genrule"
"github.com/google/blueprint"
"github.com/google/blueprint/proptools"
)
const (
cSrcPartition = "c"
asSrcPartition = "as"
asmSrcPartition = "asm"
lSrcPartition = "l"
llSrcPartition = "ll"
cppSrcPartition = "cpp"
protoSrcPartition = "proto"
aidlSrcPartition = "aidl"
syspropSrcPartition = "sysprop"
yaccSrcPartition = "yacc"
rScriptSrcPartition = "renderScript"
xsdSrcPartition = "xsd"
genrulePartition = "genrule"
protoFromGenPartition = "proto_gen"
hdrPartition = "hdr"
stubsSuffix = "_stub_libs_current"
)
// staticOrSharedAttributes are the Bazel-ified versions of StaticOrSharedProperties --
// properties which apply to either the shared or static version of a cc_library module.
type staticOrSharedAttributes struct {
Srcs bazel.LabelListAttribute
Srcs_c bazel.LabelListAttribute
Srcs_as bazel.LabelListAttribute
Srcs_aidl bazel.LabelListAttribute
Hdrs bazel.LabelListAttribute
Copts bazel.StringListAttribute
Additional_compiler_inputs 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
Runtime_deps bazel.LabelListAttribute
System_dynamic_deps bazel.LabelListAttribute
Enabled bazel.BoolAttribute
Native_coverage *bool
Apex_available []string
Features bazel.StringListAttribute
sdkAttributes
tidyAttributes
}
type tidyAttributes struct {
Tidy *string
Tidy_flags []string
Tidy_checks []string
Tidy_checks_as_errors []string
Tidy_disabled_srcs bazel.LabelListAttribute
Tidy_timeout_srcs bazel.LabelListAttribute
}
func (m *Module) convertTidyAttributes(ctx android.BaseMutatorContext, moduleAttrs *tidyAttributes) {
for _, f := range m.features {
if tidy, ok := f.(*tidyFeature); ok {
var tidyAttr *string
if tidy.Properties.Tidy != nil {
if *tidy.Properties.Tidy {
tidyAttr = proptools.StringPtr("local")
} else {
tidyAttr = proptools.StringPtr("never")
}
}
moduleAttrs.Tidy = tidyAttr
moduleAttrs.Tidy_flags = tidy.Properties.Tidy_flags
moduleAttrs.Tidy_checks = tidy.Properties.Tidy_checks
moduleAttrs.Tidy_checks_as_errors = tidy.Properties.Tidy_checks_as_errors
}
}
archVariantProps := m.GetArchVariantProperties(ctx, &BaseCompilerProperties{})
for axis, configToProps := range archVariantProps {
for cfg, _props := range configToProps {
if archProps, ok := _props.(*BaseCompilerProperties); ok {
archDisabledSrcs := android.BazelLabelForModuleSrc(ctx, archProps.Tidy_disabled_srcs)
moduleAttrs.Tidy_disabled_srcs.SetSelectValue(axis, cfg, archDisabledSrcs)
archTimeoutSrcs := android.BazelLabelForModuleSrc(ctx, archProps.Tidy_timeout_srcs)
moduleAttrs.Tidy_timeout_srcs.SetSelectValue(axis, cfg, archTimeoutSrcs)
}
}
}
}
// Returns an unchanged label and a bool indicating whether the dep is a genrule that produces .proto files
func protoFromGenPartitionMapper(pathCtx android.BazelConversionContext) bazel.LabelMapper {
return func(ctx bazel.OtherModuleContext, label bazel.Label) (string, bool) {
mod, exists := ctx.ModuleFromName(label.OriginalModuleName)
if !exists {
return label.Label, false
}
gen, isGen := mod.(*genrule.Module)
if !isGen {
return label.Label, false
}
if containsProto(ctx, gen.RawOutputFiles(pathCtx)) {
// Return unmodified label + true
// True will ensure that this module gets dropped from `srcs` of the generated cc_* target. `srcs` is reserved for .cpp files
return label.Label, true
}
return label.Label, false
}
}
// Returns true if srcs contains only .proto files
// Raises an exception if there is a combination of .proto and non .proto srcs
func containsProto(ctx bazel.OtherModuleContext, srcs []string) bool {
onlyProtos := false
for _, src := range srcs {
if strings.HasSuffix(src, ".proto") {
onlyProtos = true
} else if onlyProtos {
// This is not a proto file, and we have encountered a .proto file previously
ctx.ModuleErrorf("TOOD: Add bp2build support combination of .proto and non .proto files in outs of genrule")
}
}
return onlyProtos
}
// groupSrcsByExtension partitions `srcs` into groups based on file extension.
func groupSrcsByExtension(ctx android.BazelConversionPathContext, srcs bazel.LabelListAttribute) bazel.PartitionToLabelListAttribute {
// Convert filegroup dependencies into extension-specific filegroups filtered in the filegroup.bzl
// macro.
addSuffixForFilegroup := func(suffix string) bazel.LabelMapper {
return func(otherModuleCtx bazel.OtherModuleContext, label bazel.Label) (string, bool) {
m, exists := otherModuleCtx.ModuleFromName(label.OriginalModuleName)
labelStr := label.Label
if !exists || !android.IsFilegroup(otherModuleCtx, m) {
return labelStr, false
}
// If the filegroup is already converted to aidl_library or proto_library,
// skip creating _c_srcs, _as_srcs, _cpp_srcs filegroups
fg, _ := m.(android.FileGroupAsLibrary)
if fg.ShouldConvertToAidlLibrary(ctx) || fg.ShouldConvertToProtoLibrary(ctx) {
return labelStr, false
}
return labelStr + suffix, true
}
}
// TODO(b/190006308): Handle language detection of sources in a Bazel rule.
labels := bazel.LabelPartitions{
protoSrcPartition: android.ProtoSrcLabelPartition,
cSrcPartition: bazel.LabelPartition{Extensions: []string{".c"}, LabelMapper: addSuffixForFilegroup("_c_srcs")},
asSrcPartition: bazel.LabelPartition{Extensions: []string{".s", ".S"}, LabelMapper: addSuffixForFilegroup("_as_srcs")},
asmSrcPartition: bazel.LabelPartition{Extensions: []string{".asm"}},
aidlSrcPartition: android.AidlSrcLabelPartition,
// TODO(http://b/231968910): If there is ever a filegroup target that
// contains .l or .ll files we will need to find a way to add a
// LabelMapper for these that identifies these filegroups and
// converts them appropriately
lSrcPartition: bazel.LabelPartition{Extensions: []string{".l"}},
llSrcPartition: bazel.LabelPartition{Extensions: []string{".ll"}},
rScriptSrcPartition: bazel.LabelPartition{Extensions: []string{".fs", ".rscript"}},
xsdSrcPartition: bazel.LabelPartition{LabelMapper: android.XsdLabelMapper(xsdConfigCppTarget)},
protoFromGenPartition: bazel.LabelPartition{LabelMapper: protoFromGenPartitionMapper(ctx)},
// C++ is the "catch-all" group, and comprises generated sources because we don't
// know the language of these sources until the genrule is executed.
cppSrcPartition: bazel.LabelPartition{Extensions: []string{".cpp", ".cc", ".cxx", ".mm"}, LabelMapper: addSuffixForFilegroup("_cpp_srcs"), Keep_remainder: true},
syspropSrcPartition: bazel.LabelPartition{Extensions: []string{".sysprop"}},
yaccSrcPartition: bazel.LabelPartition{Extensions: []string{".y", "yy"}},
}
return bazel.PartitionLabelListAttribute(ctx, &srcs, labels)
}
func partitionHeaders(ctx android.BazelConversionPathContext, hdrs bazel.LabelListAttribute) bazel.PartitionToLabelListAttribute {
labels := bazel.LabelPartitions{
xsdSrcPartition: bazel.LabelPartition{LabelMapper: android.XsdLabelMapper(xsdConfigCppTarget)},
genrulePartition: bazel.LabelPartition{LabelMapper: genrule.GenruleCcHeaderLabelMapper},
hdrPartition: bazel.LabelPartition{Keep_remainder: true},
}
return bazel.PartitionLabelListAttribute(ctx, &hdrs, labels)
}
// bp2BuildParseLibProps returns the attributes for a variant of a cc_library.
func bp2BuildParseLibProps(ctx android.BazelConversionPathContext, module *Module, isStatic bool) staticOrSharedAttributes {
lib, ok := module.compiler.(*libraryDecorator)
if !ok {
return staticOrSharedAttributes{}
}
return bp2buildParseStaticOrSharedProps(ctx, module, lib, isStatic)
}
// bp2buildParseSharedProps returns the attributes for the shared variant of a cc_library.
func bp2BuildParseSharedProps(ctx android.BazelConversionPathContext, module *Module) staticOrSharedAttributes {
return bp2BuildParseLibProps(ctx, module, false)
}
// bp2buildParseStaticProps returns the attributes for the static variant of a cc_library.
func bp2BuildParseStaticProps(ctx android.BazelConversionPathContext, module *Module) staticOrSharedAttributes {
return bp2BuildParseLibProps(ctx, module, true)
}
type depsPartition struct {
export bazel.LabelList
implementation bazel.LabelList
}
type bazelLabelForDepsFn func(android.BazelConversionPathContext, []string) bazel.LabelList
func maybePartitionExportedAndImplementationsDeps(ctx android.BazelConversionPathContext, exportsDeps bool, allDeps, exportedDeps []string, fn bazelLabelForDepsFn) depsPartition {
if !exportsDeps {
return depsPartition{
implementation: fn(ctx, allDeps),
}
}
implementation, export := android.FilterList(allDeps, exportedDeps)
return depsPartition{
export: fn(ctx, export),
implementation: fn(ctx, implementation),
}
}
type bazelLabelForDepsExcludesFn func(android.BazelConversionPathContext, []string, []string) bazel.LabelList
func maybePartitionExportedAndImplementationsDepsExcludes(ctx android.BazelConversionPathContext, exportsDeps bool, allDeps, excludes, exportedDeps []string, fn bazelLabelForDepsExcludesFn) depsPartition {
if !exportsDeps {
return depsPartition{
implementation: fn(ctx, allDeps, excludes),
}
}
implementation, export := android.FilterList(allDeps, exportedDeps)
return depsPartition{
export: fn(ctx, export, excludes),
implementation: fn(ctx, implementation, excludes),
}
}
func bp2BuildPropParseHelper(ctx android.ArchVariantContext, module *Module, propsType interface{}, parseFunc func(axis bazel.ConfigurationAxis, config string, props interface{})) {
for axis, configToProps := range module.GetArchVariantProperties(ctx, propsType) {
for cfg, props := range configToProps {
parseFunc(axis, cfg, props)
}
}
}
// Parses properties common to static and shared libraries. Also used for prebuilt libraries.
func bp2buildParseStaticOrSharedProps(ctx android.BazelConversionPathContext, module *Module, lib *libraryDecorator, isStatic bool) staticOrSharedAttributes {
attrs := staticOrSharedAttributes{}
setAttrs := func(axis bazel.ConfigurationAxis, config string, props StaticOrSharedProperties) {
attrs.Copts.SetSelectValue(axis, config, parseCommandLineFlags(props.Cflags, filterOutStdFlag, filterOutHiddenVisibility))
attrs.Srcs.SetSelectValue(axis, config, android.BazelLabelForModuleSrc(ctx, props.Srcs))
attrs.System_dynamic_deps.SetSelectValue(axis, config, bazelLabelForSharedDeps(ctx, props.System_shared_libs))
staticDeps := maybePartitionExportedAndImplementationsDeps(ctx, true, props.Static_libs, props.Export_static_lib_headers, bazelLabelForStaticDeps)
attrs.Deps.SetSelectValue(axis, config, staticDeps.export)
attrs.Implementation_deps.SetSelectValue(axis, config, staticDeps.implementation)
sharedDeps := maybePartitionExportedAndImplementationsDeps(ctx, true, props.Shared_libs, props.Export_shared_lib_headers, bazelLabelForSharedDeps)
attrs.Dynamic_deps.SetSelectValue(axis, config, sharedDeps.export)
attrs.Implementation_dynamic_deps.SetSelectValue(axis, config, sharedDeps.implementation)
attrs.Whole_archive_deps.SetSelectValue(axis, config, bazelLabelForWholeDeps(ctx, props.Whole_static_libs))
attrs.Enabled.SetSelectValue(axis, config, props.Enabled)
}
// system_dynamic_deps distinguishes between nil/empty list behavior:
// nil -> use default values
// empty list -> no values specified
attrs.System_dynamic_deps.ForceSpecifyEmptyList = true
var apexAvailable []string
if isStatic {
apexAvailable = lib.StaticProperties.Static.Apex_available
bp2BuildPropParseHelper(ctx, module, &StaticProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if staticOrSharedProps, ok := props.(*StaticProperties); ok {
setAttrs(axis, config, staticOrSharedProps.Static)
}
})
} else {
apexAvailable = lib.SharedProperties.Shared.Apex_available
bp2BuildPropParseHelper(ctx, module, &SharedProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if staticOrSharedProps, ok := props.(*SharedProperties); ok {
setAttrs(axis, config, staticOrSharedProps.Shared)
}
})
}
partitionedSrcs := groupSrcsByExtension(ctx, attrs.Srcs)
attrs.Srcs = partitionedSrcs[cppSrcPartition]
attrs.Srcs_c = partitionedSrcs[cSrcPartition]
attrs.Srcs_as = partitionedSrcs[asSrcPartition]
attrs.Apex_available = android.ConvertApexAvailableToTagsWithoutTestApexes(ctx.(android.TopDownMutatorContext), apexAvailable)
attrs.Features.Append(convertHiddenVisibilityToFeatureStaticOrShared(ctx, module, isStatic))
if !partitionedSrcs[protoSrcPartition].IsEmpty() {
// TODO(b/208815215): determine whether this is used and add support if necessary
ctx.ModuleErrorf("Migrating static/shared only proto srcs is not currently supported")
}
return attrs
}
// Convenience struct to hold all attributes parsed from prebuilt properties.
type prebuiltAttributes struct {
Src bazel.LabelAttribute
Enabled bazel.BoolAttribute
}
func parseSrc(ctx android.BazelConversionPathContext, srcLabelAttribute *bazel.LabelAttribute, axis bazel.ConfigurationAxis, config string, srcs []string) {
srcFileError := func() {
ctx.ModuleErrorf("parseSrc: Expected at most one source file for %s %s\n", axis, config)
}
if len(srcs) > 1 {
srcFileError()
return
} else if len(srcs) == 0 {
return
}
if srcLabelAttribute.SelectValue(axis, config) != nil {
srcFileError()
return
}
srcLabelAttribute.SetSelectValue(axis, config, android.BazelLabelForModuleSrcSingle(ctx, srcs[0]))
}
// NOTE: Used outside of Soong repo project, in the clangprebuilts.go bootstrap_go_package
func Bp2BuildParsePrebuiltLibraryProps(ctx android.BazelConversionPathContext, module *Module, isStatic bool) prebuiltAttributes {
var srcLabelAttribute bazel.LabelAttribute
bp2BuildPropParseHelper(ctx, module, &prebuiltLinkerProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if prebuiltLinkerProperties, ok := props.(*prebuiltLinkerProperties); ok {
parseSrc(ctx, &srcLabelAttribute, axis, config, prebuiltLinkerProperties.Srcs)
}
})
var enabledLabelAttribute bazel.BoolAttribute
parseAttrs := func(axis bazel.ConfigurationAxis, config string, props StaticOrSharedProperties) {
if props.Enabled != nil {
enabledLabelAttribute.SetSelectValue(axis, config, props.Enabled)
}
parseSrc(ctx, &srcLabelAttribute, axis, config, props.Srcs)
}
if isStatic {
bp2BuildPropParseHelper(ctx, module, &StaticProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if staticProperties, ok := props.(*StaticProperties); ok {
parseAttrs(axis, config, staticProperties.Static)
}
})
} else {
bp2BuildPropParseHelper(ctx, module, &SharedProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if sharedProperties, ok := props.(*SharedProperties); ok {
parseAttrs(axis, config, sharedProperties.Shared)
}
})
}
return prebuiltAttributes{
Src: srcLabelAttribute,
Enabled: enabledLabelAttribute,
}
}
func bp2BuildParsePrebuiltBinaryProps(ctx android.BazelConversionPathContext, module *Module) prebuiltAttributes {
var srcLabelAttribute bazel.LabelAttribute
bp2BuildPropParseHelper(ctx, module, &prebuiltLinkerProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if props, ok := props.(*prebuiltLinkerProperties); ok {
parseSrc(ctx, &srcLabelAttribute, axis, config, props.Srcs)
}
})
return prebuiltAttributes{
Src: srcLabelAttribute,
}
}
func bp2BuildParsePrebuiltObjectProps(ctx android.BazelConversionPathContext, module *Module) prebuiltAttributes {
var srcLabelAttribute bazel.LabelAttribute
bp2BuildPropParseHelper(ctx, module, &prebuiltObjectProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if props, ok := props.(*prebuiltObjectProperties); ok {
parseSrc(ctx, &srcLabelAttribute, axis, config, props.Srcs)
}
})
return prebuiltAttributes{
Src: srcLabelAttribute,
}
}
type baseAttributes struct {
compilerAttributes
linkerAttributes
// A combination of compilerAttributes.features and linkerAttributes.features, as well as sanitizer features
features bazel.StringListAttribute
protoDependency *bazel.LabelAttribute
aidlDependency *bazel.LabelAttribute
Native_coverage *bool
}
// Convenience struct to hold all attributes parsed from compiler properties.
type compilerAttributes struct {
// Options for all languages
copts bazel.StringListAttribute
// Assembly options and sources
asFlags bazel.StringListAttribute
asSrcs bazel.LabelListAttribute
asmSrcs bazel.LabelListAttribute
// C options and sources
conlyFlags bazel.StringListAttribute
cSrcs bazel.LabelListAttribute
// C++ options and sources
cppFlags bazel.StringListAttribute
srcs bazel.LabelListAttribute
// xsd config sources
xsdSrcs bazel.LabelListAttribute
exportXsdSrcs bazel.LabelListAttribute
// genrule headers
genruleHeaders bazel.LabelListAttribute
exportGenruleHeaders bazel.LabelListAttribute
// Lex sources and options
lSrcs bazel.LabelListAttribute
llSrcs bazel.LabelListAttribute
lexopts bazel.StringListAttribute
// Sysprop sources
syspropSrcs bazel.LabelListAttribute
// Yacc sources
yaccSrc *bazel.LabelAttribute
yaccFlags bazel.StringListAttribute
yaccGenLocationHeader bazel.BoolAttribute
yaccGenPositionHeader bazel.BoolAttribute
rsSrcs bazel.LabelListAttribute
hdrs bazel.LabelListAttribute
rtti bazel.BoolAttribute
// Not affected by arch variants
stl *string
cStd *string
cppStd *string
localIncludes bazel.StringListAttribute
absoluteIncludes bazel.StringListAttribute
includes BazelIncludes
protoSrcs bazel.LabelListAttribute
aidlSrcs bazel.LabelListAttribute
rscriptSrcs bazel.LabelListAttribute
stubsSymbolFile *string
stubsVersions bazel.StringListAttribute
features bazel.StringListAttribute
stem bazel.StringAttribute
suffix bazel.StringAttribute
fdoProfile bazel.LabelAttribute
additionalCompilerInputs bazel.LabelListAttribute
}
type filterOutFn func(string) bool
// filterOutHiddenVisibility removes the flag specifying hidden visibility as
// this flag is converted to a toolchain feature
func filterOutHiddenVisibility(flag string) bool {
return flag == config.VisibilityHiddenFlag
}
func filterOutStdFlag(flag string) bool {
return strings.HasPrefix(flag, "-std=")
}
func filterOutClangUnknownCflags(flag string) bool {
for _, f := range config.ClangUnknownCflags {
if f == flag {
return true
}
}
return false
}
func parseCommandLineFlags(soongFlags []string, filterOut ...filterOutFn) []string {
var result []string
for _, flag := range soongFlags {
skipFlag := false
for _, filter := range filterOut {
if filter != nil && filter(flag) {
skipFlag = true
}
}
if skipFlag {
continue
}
// Soong's cflags can contain spaces, like `-include header.h`. For
// Bazel's copts, split them up to be compatible with the
// no_copts_tokenization feature.
result = append(result, strings.Split(flag, " ")...)
}
return result
}
func (ca *compilerAttributes) bp2buildForAxisAndConfig(ctx android.BazelConversionPathContext, axis bazel.ConfigurationAxis, config string, props *BaseCompilerProperties) {
// If there's arch specific srcs or exclude_srcs, generate a select entry for it.
// TODO(b/186153868): do this for OS specific srcs and exclude_srcs too.
srcsList, ok := parseSrcs(ctx, props)
if ok {
ca.srcs.SetSelectValue(axis, config, srcsList)
}
localIncludeDirs := props.Local_include_dirs
if axis == bazel.NoConfigAxis {
ca.cStd, ca.cppStd = bp2buildResolveCppStdValue(props.C_std, props.Cpp_std, props.Gnu_extensions)
if includeBuildDirectory(props.Include_build_directory) {
localIncludeDirs = append(localIncludeDirs, ".")
}
}
ca.absoluteIncludes.SetSelectValue(axis, config, props.Include_dirs)
ca.localIncludes.SetSelectValue(axis, config, localIncludeDirs)
instructionSet := proptools.StringDefault(props.Instruction_set, "")
if instructionSet == "arm" {
ca.features.SetSelectValue(axis, config, []string{"arm_isa_arm"})
} else if instructionSet != "" && instructionSet != "thumb" {
ctx.ModuleErrorf("Unknown value for instruction_set: %s", instructionSet)
}
// In Soong, cflags occur on the command line before -std=<val> flag, resulting in the value being
// overridden. In Bazel we always allow overriding, via flags; however, this can cause
// incompatibilities, so we remove "-std=" flags from Cflag properties while leaving it in other
// cases.
ca.copts.SetSelectValue(axis, config, parseCommandLineFlags(props.Cflags, filterOutStdFlag, filterOutClangUnknownCflags, filterOutHiddenVisibility))
ca.asFlags.SetSelectValue(axis, config, parseCommandLineFlags(props.Asflags, nil))
ca.conlyFlags.SetSelectValue(axis, config, parseCommandLineFlags(props.Conlyflags, filterOutClangUnknownCflags))
ca.cppFlags.SetSelectValue(axis, config, parseCommandLineFlags(props.Cppflags, filterOutClangUnknownCflags))
ca.rtti.SetSelectValue(axis, config, props.Rtti)
}
func (ca *compilerAttributes) convertStlProps(ctx android.ArchVariantContext, module *Module) {
bp2BuildPropParseHelper(ctx, module, &StlProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if stlProps, ok := props.(*StlProperties); ok {
if stlProps.Stl == nil {
return
}
if ca.stl == nil {
stl := deduplicateStlInput(*stlProps.Stl)
ca.stl = &stl
} else if ca.stl != stlProps.Stl {
ctx.ModuleErrorf("Unsupported conversion: module with different stl for different variants: %s and %s", *ca.stl, stlProps.Stl)
}
}
})
}
func (ca *compilerAttributes) convertProductVariables(ctx android.BazelConversionPathContext, productVariableProps android.ProductConfigProperties) {
productVarPropNameToAttribute := map[string]*bazel.StringListAttribute{
"Cflags": &ca.copts,
"Asflags": &ca.asFlags,
"Cppflags": &ca.cppFlags,
}
for propName, attr := range productVarPropNameToAttribute {
if productConfigProps, exists := productVariableProps[propName]; exists {
for productConfigProp, prop := range productConfigProps {
flags, ok := prop.([]string)
if !ok {
ctx.ModuleErrorf("Could not convert product variable %s property", proptools.PropertyNameForField(propName))
}
newFlags, _ := bazel.TryVariableSubstitutions(flags, productConfigProp.Name())
attr.SetSelectValue(productConfigProp.ConfigurationAxis(), productConfigProp.SelectKey(), newFlags)
}
}
}
}
func (ca *compilerAttributes) finalize(ctx android.BazelConversionPathContext, implementationHdrs, exportHdrs bazel.LabelListAttribute) {
ca.srcs.ResolveExcludes()
partitionedSrcs := groupSrcsByExtension(ctx, ca.srcs)
partitionedImplHdrs := partitionHeaders(ctx, implementationHdrs)
partitionedHdrs := partitionHeaders(ctx, exportHdrs)
ca.protoSrcs = partitionedSrcs[protoSrcPartition]
ca.protoSrcs.Append(partitionedSrcs[protoFromGenPartition])
ca.aidlSrcs = partitionedSrcs[aidlSrcPartition]
for p, lla := range partitionedSrcs {
// if there are no sources, there is no need for headers
if lla.IsEmpty() {
continue
}
lla.Append(partitionedImplHdrs[hdrPartition])
partitionedSrcs[p] = lla
}
ca.hdrs = partitionedHdrs[hdrPartition]
ca.includesFromHeaders(ctx, partitionedImplHdrs[hdrPartition], partitionedHdrs[hdrPartition])
xsdSrcs := bazel.SubtractBazelLabelListAttribute(partitionedSrcs[xsdSrcPartition], partitionedHdrs[xsdSrcPartition])
xsdSrcs.Append(partitionedImplHdrs[xsdSrcPartition])
ca.exportXsdSrcs = partitionedHdrs[xsdSrcPartition]
ca.xsdSrcs = bazel.FirstUniqueBazelLabelListAttribute(xsdSrcs)
ca.genruleHeaders = partitionedImplHdrs[genrulePartition]
ca.exportGenruleHeaders = partitionedHdrs[genrulePartition]
ca.srcs = partitionedSrcs[cppSrcPartition]
ca.cSrcs = partitionedSrcs[cSrcPartition]
ca.asSrcs = partitionedSrcs[asSrcPartition]
ca.asmSrcs = partitionedSrcs[asmSrcPartition]
ca.lSrcs = partitionedSrcs[lSrcPartition]
ca.llSrcs = partitionedSrcs[llSrcPartition]
if yacc := partitionedSrcs[yaccSrcPartition]; !yacc.IsEmpty() {
if len(yacc.Value.Includes) > 1 {
ctx.PropertyErrorf("srcs", "Found multiple yacc (.y/.yy) files in library")
}
ca.yaccSrc = bazel.MakeLabelAttribute(yacc.Value.Includes[0].Label)
}
ca.syspropSrcs = partitionedSrcs[syspropSrcPartition]
ca.rscriptSrcs = partitionedSrcs[rScriptSrcPartition]
ca.absoluteIncludes.DeduplicateAxesFromBase()
ca.localIncludes.DeduplicateAxesFromBase()
}
// Parse srcs from an arch or OS's props value.
func parseSrcs(ctx android.BazelConversionPathContext, props *BaseCompilerProperties) (bazel.LabelList, bool) {
anySrcs := false
// Add srcs-like dependencies such as generated files.
// First create a LabelList containing these dependencies, then merge the values with srcs.
genSrcs := props.Generated_sources
generatedSrcsLabelList := android.BazelLabelForModuleDepsExcludes(ctx, genSrcs, props.Exclude_generated_sources)
if len(props.Generated_sources) > 0 || len(props.Exclude_generated_sources) > 0 {
anySrcs = true
}
allSrcsLabelList := android.BazelLabelForModuleSrcExcludes(ctx, props.Srcs, props.Exclude_srcs)
if len(props.Srcs) > 0 || len(props.Exclude_srcs) > 0 {
anySrcs = true
}
return bazel.AppendBazelLabelLists(allSrcsLabelList, generatedSrcsLabelList), anySrcs
}
func bp2buildStdVal(std *string, prefix string, useGnu bool) *string {
defaultVal := prefix + "_std_default"
// If c{,pp}std properties are not specified, don't generate them in the BUILD file.
// Defaults are handled by the toolchain definition.
// However, if gnu_extensions is false, then the default gnu-to-c version must be specified.
stdVal := proptools.StringDefault(std, defaultVal)
if stdVal == "experimental" || stdVal == defaultVal {
if stdVal == "experimental" {
stdVal = prefix + "_std_experimental"
}
if !useGnu {
stdVal += "_no_gnu"
}
} else if !useGnu {
stdVal = gnuToCReplacer.Replace(stdVal)
}
if stdVal == defaultVal {
return nil
}
return &stdVal
}
func bp2buildResolveCppStdValue(c_std *string, cpp_std *string, gnu_extensions *bool) (*string, *string) {
useGnu := useGnuExtensions(gnu_extensions)
return bp2buildStdVal(c_std, "c", useGnu), bp2buildStdVal(cpp_std, "cpp", useGnu)
}
// packageFromLabel extracts package from a fully-qualified or relative Label and whether the label
// is fully-qualified.
// e.g. fully-qualified "//a/b:foo" -> "a/b", true, relative: ":bar" -> ".", false
func packageFromLabel(label string) (string, bool) {
split := strings.Split(label, ":")
if len(split) != 2 {
return "", false
}
if split[0] == "" {
return ".", false
}
// remove leading "//"
return split[0][2:], true
}
// includesFromHeaders gets the include directories needed from generated headers
func (ca *compilerAttributes) includesFromHeaders(ctx android.BazelConversionPathContext, implHdrs, hdrs bazel.LabelListAttribute) {
local, absolute := includesFromLabelListAttribute(implHdrs, ca.localIncludes, ca.absoluteIncludes)
localExport, absoluteExport := includesFromLabelListAttribute(hdrs, ca.includes.Includes, ca.includes.AbsoluteIncludes)
ca.localIncludes = local
ca.absoluteIncludes = absolute
ca.includes.Includes = localExport
ca.includes.AbsoluteIncludes = absoluteExport
}
// includesFromLabelList extracts the packages from a LabelListAttribute that should be includes and
// combines them with existing local/absolute includes.
func includesFromLabelListAttribute(attr bazel.LabelListAttribute, existingLocal, existingAbsolute bazel.StringListAttribute) (bazel.StringListAttribute, bazel.StringListAttribute) {
localAttr := existingLocal.Clone()
absoluteAttr := existingAbsolute.Clone()
if !attr.Value.IsEmpty() {
l, a := includesFromLabelList(attr.Value, existingLocal.Value, existingAbsolute.Value)
localAttr.SetSelectValue(bazel.NoConfigAxis, "", l)
absoluteAttr.SetSelectValue(bazel.NoConfigAxis, "", a)
}
for axis, configToLabels := range attr.ConfigurableValues {
for c, labels := range configToLabels {
local := existingLocal.SelectValue(axis, c)
absolute := existingAbsolute.SelectValue(axis, c)
l, a := includesFromLabelList(labels, local, absolute)
localAttr.SetSelectValue(axis, c, l)
absoluteAttr.SetSelectValue(axis, c, a)
}
}
return *localAttr, *absoluteAttr
}
// includesFromLabelList extracts relative/absolute includes from a bazel.LabelList.
func includesFromLabelList(labelList bazel.LabelList, existingRel, existingAbs []string) ([]string, []string) {
var relative, absolute []string
for _, hdr := range labelList.Includes {
if pkg, hasPkg := packageFromLabel(hdr.Label); hasPkg {
absolute = append(absolute, pkg)
} else if pkg != "" {
relative = append(relative, pkg)
}
}
if len(relative)+len(existingRel) != 0 {
relative = android.FirstUniqueStrings(append(append([]string{}, existingRel...), relative...))
}
if len(absolute)+len(existingAbs) != 0 {
absolute = android.FirstUniqueStrings(append(append([]string{}, existingAbs...), absolute...))
}
return relative, absolute
}
type YasmAttributes struct {
Srcs bazel.LabelListAttribute
Flags bazel.StringListAttribute
Include_dirs bazel.StringListAttribute
}
func bp2BuildYasm(ctx android.Bp2buildMutatorContext, m *Module, ca compilerAttributes) *bazel.LabelAttribute {
if ca.asmSrcs.IsEmpty() {
return nil
}
// Yasm needs the include directories from both local_includes and
// export_include_dirs. We don't care about actually exporting them from the
// yasm rule though, because they will also be present on the cc_ rule that
// wraps this yasm rule.
includes := ca.localIncludes.Clone()
bp2BuildPropParseHelper(ctx, m, &FlagExporterProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if flagExporterProperties, ok := props.(*FlagExporterProperties); ok {
if len(flagExporterProperties.Export_include_dirs) > 0 {
x := bazel.StringListAttribute{}
x.SetSelectValue(axis, config, flagExporterProperties.Export_include_dirs)
includes.Append(x)
}
}
})
ctx.CreateBazelTargetModule(
bazel.BazelTargetModuleProperties{
Rule_class: "yasm",
Bzl_load_location: "//build/bazel/rules/cc:yasm.bzl",
},
android.CommonAttributes{Name: m.Name() + "_yasm"},
&YasmAttributes{
Srcs: ca.asmSrcs,
Flags: ca.asFlags,
Include_dirs: *includes,
})
// We only want to add a dependency on the _yasm target if there are asm
// sources in the current configuration. If there are unconfigured asm
// sources, always add the dependency. Otherwise, add the dependency only
// on the configuration axes and values that had asm sources.
if len(ca.asmSrcs.Value.Includes) > 0 {
return bazel.MakeLabelAttribute(":" + m.Name() + "_yasm")
}
ret := &bazel.LabelAttribute{}
for _, axis := range ca.asmSrcs.SortedConfigurationAxes() {
for cfg := range ca.asmSrcs.ConfigurableValues[axis] {
ret.SetSelectValue(axis, cfg, bazel.Label{Label: ":" + m.Name() + "_yasm"})
}
}
return ret
}
// bp2BuildParseBaseProps returns all compiler, linker, library attributes of a cc module..
func bp2BuildParseBaseProps(ctx android.Bp2buildMutatorContext, module *Module) baseAttributes {
archVariantCompilerProps := module.GetArchVariantProperties(ctx, &BaseCompilerProperties{})
archVariantLinkerProps := module.GetArchVariantProperties(ctx, &BaseLinkerProperties{})
archVariantLibraryProperties := module.GetArchVariantProperties(ctx, &LibraryProperties{})
axisToConfigs := map[bazel.ConfigurationAxis]map[string]bool{}
allAxesAndConfigs := func(cp android.ConfigurationAxisToArchVariantProperties) {
for axis, configMap := range cp {
if _, ok := axisToConfigs[axis]; !ok {
axisToConfigs[axis] = map[string]bool{}
}
for cfg := range configMap {
axisToConfigs[axis][cfg] = true
}
}
}
allAxesAndConfigs(archVariantCompilerProps)
allAxesAndConfigs(archVariantLinkerProps)
allAxesAndConfigs(archVariantLibraryProperties)
compilerAttrs := compilerAttributes{}
linkerAttrs := linkerAttributes{}
var aidlLibs bazel.LabelList
var implementationHdrs, exportHdrs bazel.LabelListAttribute
// Iterate through these axes in a deterministic order. This is required
// because processing certain dependencies may result in concatenating
// elements along other axes. (For example, processing NoConfig may result
// in elements being added to InApex). This is thus the only way to ensure
// that the order of entries in each list is in a predictable order.
for _, axis := range bazel.SortedConfigurationAxes(axisToConfigs) {
configs := axisToConfigs[axis]
for cfg := range configs {
var allHdrs []string
if baseCompilerProps, ok := archVariantCompilerProps[axis][cfg].(*BaseCompilerProperties); ok {
allHdrs = baseCompilerProps.Generated_headers
if baseCompilerProps.Lex != nil {
compilerAttrs.lexopts.SetSelectValue(axis, cfg, baseCompilerProps.Lex.Flags)
}
if baseCompilerProps.Yacc != nil {
compilerAttrs.yaccFlags.SetSelectValue(axis, cfg, baseCompilerProps.Yacc.Flags)
compilerAttrs.yaccGenLocationHeader.SetSelectValue(axis, cfg, baseCompilerProps.Yacc.Gen_location_hh)
compilerAttrs.yaccGenPositionHeader.SetSelectValue(axis, cfg, baseCompilerProps.Yacc.Gen_position_hh)
}
(&compilerAttrs).bp2buildForAxisAndConfig(ctx, axis, cfg, baseCompilerProps)
aidlLibs.Append(android.BazelLabelForModuleDeps(ctx, baseCompilerProps.Aidl.Libs))
}
var exportedHdrs []string
if baseLinkerProps, ok := archVariantLinkerProps[axis][cfg].(*BaseLinkerProperties); ok {
exportedHdrs = baseLinkerProps.Export_generated_headers
(&linkerAttrs).bp2buildForAxisAndConfig(ctx, module, axis, cfg, baseLinkerProps)
}
headers := maybePartitionExportedAndImplementationsDeps(ctx, !module.Binary(), allHdrs, exportedHdrs, android.BazelLabelForModuleDeps)
implementationHdrs.SetSelectValue(axis, cfg, headers.implementation)
exportHdrs.SetSelectValue(axis, cfg, headers.export)
if libraryProps, ok := archVariantLibraryProperties[axis][cfg].(*LibraryProperties); ok {
if axis == bazel.NoConfigAxis {
if libraryProps.Stubs.Symbol_file != nil {
compilerAttrs.stubsSymbolFile = libraryProps.Stubs.Symbol_file
versions := android.CopyOf(libraryProps.Stubs.Versions)
normalizeVersions(ctx, versions)
versions = addCurrentVersionIfNotPresent(versions)
compilerAttrs.stubsVersions.SetSelectValue(axis, cfg, versions)
}
}
if stem := libraryProps.Stem; stem != nil {
compilerAttrs.stem.SetSelectValue(axis, cfg, stem)
}
if suffix := libraryProps.Suffix; suffix != nil {
compilerAttrs.suffix.SetSelectValue(axis, cfg, suffix)
}
}
}
}
compilerAttrs.convertStlProps(ctx, module)
(&linkerAttrs).convertStripProps(ctx, module)
var nativeCoverage *bool
if module.coverage != nil && module.coverage.Properties.Native_coverage != nil &&
!Bool(module.coverage.Properties.Native_coverage) {
nativeCoverage = BoolPtr(false)
}
productVariableProps := android.ProductVariableProperties(ctx, ctx.Module())
(&compilerAttrs).convertProductVariables(ctx, productVariableProps)
(&linkerAttrs).convertProductVariables(ctx, productVariableProps)
(&compilerAttrs).finalize(ctx, implementationHdrs, exportHdrs)
(&linkerAttrs).finalize(ctx)
(&compilerAttrs.srcs).Add(bp2BuildYasm(ctx, module, compilerAttrs))
(&linkerAttrs).deps.Append(compilerAttrs.exportGenruleHeaders)
(&linkerAttrs).implementationDeps.Append(compilerAttrs.genruleHeaders)
(&linkerAttrs).wholeArchiveDeps.Append(compilerAttrs.exportXsdSrcs)
(&linkerAttrs).implementationWholeArchiveDeps.Append(compilerAttrs.xsdSrcs)
protoDep := bp2buildProto(ctx, module, compilerAttrs.protoSrcs)
// bp2buildProto will only set wholeStaticLib or implementationWholeStaticLib, but we don't know
// which. This will add the newly generated proto library to the appropriate attribute and nothing
// to the other
(&linkerAttrs).wholeArchiveDeps.Add(protoDep.wholeStaticLib)
(&linkerAttrs).implementationWholeArchiveDeps.Add(protoDep.implementationWholeStaticLib)
aidlDep := bp2buildCcAidlLibrary(
ctx, module,
compilerAttrs.aidlSrcs,
bazel.LabelListAttribute{
Value: aidlLibs,
},
linkerAttrs,
compilerAttrs,
)
if aidlDep != nil {
if lib, ok := module.linker.(*libraryDecorator); ok {
if proptools.Bool(lib.Properties.Aidl.Export_aidl_headers) {
(&linkerAttrs).wholeArchiveDeps.Add(aidlDep)
} else {
(&linkerAttrs).implementationWholeArchiveDeps.Add(aidlDep)
}
}
}
// Create a cc_yacc_static_library if srcs contains .y/.yy files
// This internal target will produce an .a file that will be statically linked to the parent library
if yaccDep := bp2buildCcYaccLibrary(ctx, compilerAttrs, linkerAttrs); yaccDep != nil {
(&linkerAttrs).implementationWholeArchiveDeps.Add(yaccDep)
}
convertedLSrcs := bp2BuildLex(ctx, module.Name(), compilerAttrs)
(&compilerAttrs).srcs.Add(&convertedLSrcs.srcName)
(&compilerAttrs).cSrcs.Add(&convertedLSrcs.cSrcName)
if module.afdo != nil && module.afdo.Properties.Afdo {
fdoProfileDep := bp2buildFdoProfile(ctx, module)
if fdoProfileDep != nil {
(&compilerAttrs).fdoProfile.SetValue(*fdoProfileDep)
}
}
if !compilerAttrs.syspropSrcs.IsEmpty() {
(&linkerAttrs).wholeArchiveDeps.Add(bp2buildCcSysprop(ctx, module.Name(), module.Properties.Min_sdk_version, compilerAttrs.syspropSrcs))
}
linkerAttrs.wholeArchiveDeps.Prepend = true
linkerAttrs.deps.Prepend = true
compilerAttrs.localIncludes.Prepend = true
compilerAttrs.absoluteIncludes.Prepend = true
compilerAttrs.hdrs.Prepend = true
convertedRsSrcs, rsAbsIncludes, rsLocalIncludes := bp2buildRScript(ctx, module, compilerAttrs)
(&compilerAttrs).srcs.Add(&convertedRsSrcs)
(&compilerAttrs).absoluteIncludes.Append(rsAbsIncludes)
(&compilerAttrs).localIncludes.Append(rsLocalIncludes)
(&compilerAttrs).localIncludes.Value = android.FirstUniqueStrings(compilerAttrs.localIncludes.Value)
sanitizerValues := bp2buildSanitizerFeatures(ctx, module)
features := compilerAttrs.features.Clone().Append(linkerAttrs.features).Append(sanitizerValues.features)
features = features.Append(bp2buildLtoFeatures(ctx, module))
features = features.Append(convertHiddenVisibilityToFeatureBase(ctx, module))
features.DeduplicateAxesFromBase()
compilerAttrs.copts = *compilerAttrs.copts.Append(sanitizerValues.copts)
compilerAttrs.additionalCompilerInputs = *compilerAttrs.additionalCompilerInputs.Append(sanitizerValues.additionalCompilerInputs)
addMuslSystemDynamicDeps(ctx, linkerAttrs)
// Dedupe all deps.
(&linkerAttrs).deps.Value = bazel.FirstUniqueBazelLabelList((&linkerAttrs).deps.Value)
(&linkerAttrs).implementationDeps.Value = bazel.FirstUniqueBazelLabelList((&linkerAttrs).implementationDeps.Value)
(&linkerAttrs).implementationDynamicDeps.Value = bazel.FirstUniqueBazelLabelList((&linkerAttrs).implementationDynamicDeps.Value)
(&linkerAttrs).wholeArchiveDeps.Value = bazel.FirstUniqueBazelLabelList((&linkerAttrs).wholeArchiveDeps.Value)
(&linkerAttrs).implementationWholeArchiveDeps.Value = bazel.FirstUniqueBazelLabelList((&linkerAttrs).implementationWholeArchiveDeps.Value)
return baseAttributes{
compilerAttrs,
linkerAttrs,
*features,
protoDep.protoDep,
aidlDep,
nativeCoverage,
}
}
type ccYaccLibraryAttributes struct {
Src bazel.LabelAttribute
Flags bazel.StringListAttribute
Gen_location_hh bazel.BoolAttribute
Gen_position_hh bazel.BoolAttribute
Local_includes bazel.StringListAttribute
Implementation_deps bazel.LabelListAttribute
Implementation_dynamic_deps bazel.LabelListAttribute
}
func bp2buildCcYaccLibrary(ctx android.Bp2buildMutatorContext, ca compilerAttributes, la linkerAttributes) *bazel.LabelAttribute {
if ca.yaccSrc == nil {
return nil
}
yaccLibraryLabel := ctx.Module().Name() + "_yacc"
ctx.CreateBazelTargetModule(
bazel.BazelTargetModuleProperties{
Rule_class: "cc_yacc_static_library",
Bzl_load_location: "//build/bazel/rules/cc:cc_yacc_library.bzl",
},
android.CommonAttributes{
Name: yaccLibraryLabel,
},
&ccYaccLibraryAttributes{
Src: *ca.yaccSrc,
Flags: ca.yaccFlags,
Gen_location_hh: ca.yaccGenLocationHeader,
Gen_position_hh: ca.yaccGenPositionHeader,
Local_includes: ca.localIncludes,
Implementation_deps: la.implementationDeps,
Implementation_dynamic_deps: la.implementationDynamicDeps,
},
)
yaccLibrary := &bazel.LabelAttribute{
Value: &bazel.Label{
Label: ":" + yaccLibraryLabel,
},
}
return yaccLibrary
}
// As a workaround for b/261657184, we are manually adding the default value
// of system_dynamic_deps for the linux_musl os.
// TODO: Solve this properly
func addMuslSystemDynamicDeps(ctx android.Bp2buildMutatorContext, attrs linkerAttributes) {
systemDynamicDeps := attrs.systemDynamicDeps.SelectValue(bazel.OsConfigurationAxis, "linux_musl")
if attrs.systemDynamicDeps.HasAxisSpecificValues(bazel.OsConfigurationAxis) && systemDynamicDeps.IsNil() {
attrs.systemDynamicDeps.SetSelectValue(bazel.OsConfigurationAxis, "linux_musl", android.BazelLabelForModuleDeps(ctx, config.MuslDefaultSharedLibraries))
}
}
type fdoProfileAttributes struct {
Absolute_path_profile string
}
func bp2buildFdoProfile(
ctx android.Bp2buildMutatorContext,
m *Module,
) *bazel.Label {
for _, project := range globalAfdoProfileProjects {
// Ensure handcrafted BUILD file exists in the project
BUILDPath := android.ExistentPathForSource(ctx, project, "BUILD")
if BUILDPath.Valid() {
// We handcraft a BUILD file with fdo_profile targets that use the existing profiles in the project
// This implementation is assuming that every afdo profile in globalAfdoProfileProjects already has
// an associated fdo_profile target declared in the same package.
// TODO(b/260714900): Handle arch-specific afdo profiles (e.g. `<module-name>-arm<64>.afdo`)
path := android.ExistentPathForSource(ctx, project, m.Name()+".afdo")
if path.Valid() {
// FIXME: Some profiles only exist internally and are not released to AOSP.
// When generated BUILD files are checked in, we'll run into merge conflict.
// The cc_library_shared target in AOSP won't have reference to an fdo_profile target because
// the profile doesn't exist. Internally, the same cc_library_shared target will
// have reference to the fdo_profile.
// For more context, see b/258682955#comment2
fdoProfileLabel := "//" + strings.TrimSuffix(project, "/") + ":" + m.Name()
return &bazel.Label{
Label: fdoProfileLabel,
}
}
}
}
return nil
}
func bp2buildCcAidlLibrary(
ctx android.Bp2buildMutatorContext,
m *Module,
aidlSrcs bazel.LabelListAttribute,
aidlLibs bazel.LabelListAttribute,
linkerAttrs linkerAttributes,
compilerAttrs compilerAttributes,
) *bazel.LabelAttribute {
var aidlLibsFromSrcs, aidlFiles bazel.LabelListAttribute
apexAvailableTags := android.ApexAvailableTagsWithoutTestApexes(ctx.(android.TopDownMutatorContext), ctx.Module())
if !aidlSrcs.IsEmpty() {
aidlLibsFromSrcs, aidlFiles = aidlSrcs.Partition(func(src bazel.Label) bool {
if fg, ok := android.ToFileGroupAsLibrary(ctx, src.OriginalModuleName); ok &&
fg.ShouldConvertToAidlLibrary(ctx) {
return true
}
return false
})
if !aidlFiles.IsEmpty() {
aidlLibName := m.Name() + "_aidl_library"
ctx.CreateBazelTargetModule(
bazel.BazelTargetModuleProperties{
Rule_class: "aidl_library",
Bzl_load_location: "//build/bazel/rules/aidl:aidl_library.bzl",
},
android.CommonAttributes{
Name: aidlLibName,
Tags: apexAvailableTags,
},
&aidlLibraryAttributes{
Srcs: aidlFiles,
},
)
aidlLibsFromSrcs.Add(&bazel.LabelAttribute{Value: &bazel.Label{Label: ":" + aidlLibName}})
}
}
allAidlLibs := aidlLibs.Clone()
allAidlLibs.Append(aidlLibsFromSrcs)
if !allAidlLibs.IsEmpty() {
ccAidlLibrarylabel := m.Name() + "_cc_aidl_library"
// Since parent cc_library already has these dependencies, we can add them as implementation
// deps so that they don't re-export
implementationDeps := linkerAttrs.deps.Clone()
implementationDeps.Append(linkerAttrs.implementationDeps)
implementationDynamicDeps := linkerAttrs.dynamicDeps.Clone()
implementationDynamicDeps.Append(linkerAttrs.implementationDynamicDeps)
sdkAttrs := bp2BuildParseSdkAttributes(m)
exportedIncludes := bp2BuildParseExportedIncludes(ctx, m, &compilerAttrs.includes)
includeAttrs := includesAttributes{
Export_includes: exportedIncludes.Includes,
Export_absolute_includes: exportedIncludes.AbsoluteIncludes,
Export_system_includes: exportedIncludes.SystemIncludes,
Local_includes: compilerAttrs.localIncludes,
Absolute_includes: compilerAttrs.absoluteIncludes,
}
ctx.CreateBazelTargetModule(
bazel.BazelTargetModuleProperties{
Rule_class: "cc_aidl_library",
Bzl_load_location: "//build/bazel/rules/cc:cc_aidl_library.bzl",
},
android.CommonAttributes{Name: ccAidlLibrarylabel},
&ccAidlLibraryAttributes{
Deps: *allAidlLibs,
Implementation_deps: *implementationDeps,
Implementation_dynamic_deps: *implementationDynamicDeps,
Tags: apexAvailableTags,
sdkAttributes: sdkAttrs,
includesAttributes: includeAttrs,
},
)
label := &bazel.LabelAttribute{
Value: &bazel.Label{
Label: ":" + ccAidlLibrarylabel,
},
}
return label
}
return nil
}
func bp2BuildParseSdkAttributes(module *Module) sdkAttributes {
return sdkAttributes{
Sdk_version: module.Properties.Sdk_version,
Min_sdk_version: module.Properties.Min_sdk_version,
}
}
type sdkAttributes struct {
Sdk_version *string
Min_sdk_version *string
}
// Convenience struct to hold all attributes parsed from linker properties.
type linkerAttributes struct {
deps bazel.LabelListAttribute
implementationDeps bazel.LabelListAttribute
dynamicDeps bazel.LabelListAttribute
implementationDynamicDeps bazel.LabelListAttribute
runtimeDeps bazel.LabelListAttribute
wholeArchiveDeps bazel.LabelListAttribute
implementationWholeArchiveDeps bazel.LabelListAttribute
systemDynamicDeps bazel.LabelListAttribute
usedSystemDynamicDepAsStaticDep map[string]bool
usedSystemDynamicDepAsDynamicDep map[string]bool
useVersionLib bazel.BoolAttribute
linkopts bazel.StringListAttribute
additionalLinkerInputs bazel.LabelListAttribute
stripKeepSymbols bazel.BoolAttribute
stripKeepSymbolsAndDebugFrame bazel.BoolAttribute
stripKeepSymbolsList bazel.StringListAttribute
stripAll bazel.BoolAttribute
stripNone bazel.BoolAttribute
features bazel.StringListAttribute
}
var (
soongSystemSharedLibs = []string{"libc", "libm", "libdl"}
versionLib = "libbuildversion"
)
// resolveTargetApex re-adds the shared and static libs in target.apex.exclude_shared|static_libs props to non-apex variant
// since all libs are already excluded by default
func (la *linkerAttributes) resolveTargetApexProp(ctx android.BazelConversionPathContext, props *BaseLinkerProperties) {
excludeSharedLibs := bazelLabelForSharedDeps(ctx, props.Target.Apex.Exclude_shared_libs)
sharedExcludes := bazel.LabelList{Excludes: excludeSharedLibs.Includes}
sharedExcludesLabelList := bazel.LabelListAttribute{}
sharedExcludesLabelList.SetSelectValue(bazel.InApexAxis, bazel.InApex, sharedExcludes)
la.dynamicDeps.Append(sharedExcludesLabelList)
la.implementationDynamicDeps.Append(sharedExcludesLabelList)
excludeStaticLibs := bazelLabelForStaticDeps(ctx, props.Target.Apex.Exclude_static_libs)
staticExcludes := bazel.LabelList{Excludes: excludeStaticLibs.Includes}
staticExcludesLabelList := bazel.LabelListAttribute{}
staticExcludesLabelList.SetSelectValue(bazel.InApexAxis, bazel.InApex, staticExcludes)
la.deps.Append(staticExcludesLabelList)
la.implementationDeps.Append(staticExcludesLabelList)
}
func (la *linkerAttributes) bp2buildForAxisAndConfig(ctx android.BazelConversionPathContext, module *Module, axis bazel.ConfigurationAxis, config string, props *BaseLinkerProperties) {
isBinary := module.Binary()
// Use a single variable to capture usage of nocrt in arch variants, so there's only 1 error message for this module
var axisFeatures []string
wholeStaticLibs := android.FirstUniqueStrings(props.Whole_static_libs)
staticLibs := android.FirstUniqueStrings(android.RemoveListFromList(props.Static_libs, wholeStaticLibs))
if axis == bazel.NoConfigAxis {
la.useVersionLib.SetSelectValue(axis, config, props.Use_version_lib)
if proptools.Bool(props.Use_version_lib) {
versionLibAlreadyInDeps := android.InList(versionLib, wholeStaticLibs)
// remove from static libs so there is no duplicate dependency
_, staticLibs = android.RemoveFromList(versionLib, staticLibs)
// only add the dep if it is not in progress
if !versionLibAlreadyInDeps {
wholeStaticLibs = append(wholeStaticLibs, versionLib)
}
}
}
// Excludes to parallel Soong:
// https://cs.android.com/android/platform/superproject/+/master:build/soong/cc/linker.go;l=247-249;drc=088b53577dde6e40085ffd737a1ae96ad82fc4b0
la.wholeArchiveDeps.SetSelectValue(axis, config, bazelLabelForWholeDepsExcludes(ctx, wholeStaticLibs, props.Exclude_static_libs))
if isBinary && module.StaticExecutable() {
usedSystemStatic := android.FilterListPred(staticLibs, func(s string) bool {
return android.InList(s, soongSystemSharedLibs) && !android.InList(s, props.Exclude_static_libs)
})
for _, el := range usedSystemStatic {
if la.usedSystemDynamicDepAsStaticDep == nil {
la.usedSystemDynamicDepAsStaticDep = map[string]bool{}
}
la.usedSystemDynamicDepAsStaticDep[el] = true
}
}
staticDeps := maybePartitionExportedAndImplementationsDepsExcludes(
ctx,
!isBinary,
staticLibs,
props.Exclude_static_libs,
props.Export_static_lib_headers,
bazelLabelForStaticDepsExcludes,
)
headerLibs := android.FirstUniqueStrings(props.Header_libs)
hDeps := maybePartitionExportedAndImplementationsDeps(ctx, !isBinary, headerLibs, props.Export_header_lib_headers, bazelLabelForHeaderDeps)
(&hDeps.export).Append(staticDeps.export)
la.deps.SetSelectValue(axis, config, hDeps.export)
(&hDeps.implementation).Append(staticDeps.implementation)
la.implementationDeps.SetSelectValue(axis, config, hDeps.implementation)
systemSharedLibs := props.System_shared_libs
// systemSharedLibs distinguishes between nil/empty list behavior:
// nil -> use default values
// empty list -> no values specified
if len(systemSharedLibs) > 0 {
systemSharedLibs = android.FirstUniqueStrings(systemSharedLibs)
}
la.systemDynamicDeps.SetSelectValue(axis, config, bazelLabelForSharedDeps(ctx, systemSharedLibs))
sharedLibs := android.FirstUniqueStrings(props.Shared_libs)
excludeSharedLibs := props.Exclude_shared_libs
usedSystem := android.FilterListPred(sharedLibs, func(s string) bool {
return android.InList(s, soongSystemSharedLibs) && !android.InList(s, excludeSharedLibs)
})
for _, el := range usedSystem {
if la.usedSystemDynamicDepAsDynamicDep == nil {
la.usedSystemDynamicDepAsDynamicDep = map[string]bool{}
}
la.usedSystemDynamicDepAsDynamicDep[el] = true
}
sharedDeps := maybePartitionExportedAndImplementationsDepsExcludes(
ctx,
!isBinary,
sharedLibs,
props.Exclude_shared_libs,
props.Export_shared_lib_headers,
bazelLabelForSharedDepsExcludes,
)
la.dynamicDeps.SetSelectValue(axis, config, sharedDeps.export)
la.implementationDynamicDeps.SetSelectValue(axis, config, sharedDeps.implementation)
la.resolveTargetApexProp(ctx, props)
if axis == bazel.NoConfigAxis || (axis == bazel.OsConfigurationAxis && config == bazel.OsAndroid) {
// If a dependency in la.implementationDynamicDeps or la.dynamicDeps has stubs, its
// stub variant should be used when the dependency is linked in a APEX. The
// dependencies in NoConfigAxis and OsConfigurationAxis/OsAndroid are grouped by
// having stubs or not, so Bazel select() statement can be used to choose
// source/stub variants of them.
apexAvailable := module.ApexAvailable()
setStubsForDynamicDeps(ctx, axis, config, apexAvailable, sharedDeps.export, &la.dynamicDeps, 0, false)
setStubsForDynamicDeps(ctx, axis, config, apexAvailable, sharedDeps.implementation, &la.implementationDynamicDeps, 1, false)
if len(systemSharedLibs) > 0 {
setStubsForDynamicDeps(ctx, axis, config, apexAvailable, bazelLabelForSharedDeps(ctx, systemSharedLibs), &la.systemDynamicDeps, 2, true)
}
}
if !BoolDefault(props.Pack_relocations, packRelocationsDefault) {
axisFeatures = append(axisFeatures, "disable_pack_relocations")
}
if Bool(props.Allow_undefined_symbols) {
axisFeatures = append(axisFeatures, "-no_undefined_symbols")
}
var linkerFlags []string
if len(props.Ldflags) > 0 {
linkerFlags = append(linkerFlags, proptools.NinjaEscapeList(props.Ldflags)...)
// binaries remove static flag if -shared is in the linker flags
if isBinary && android.InList("-shared", linkerFlags) {
axisFeatures = append(axisFeatures, "-static_flag")
}
}
if !props.libCrt() {
axisFeatures = append(axisFeatures, "-use_libcrt")
}
if !props.crt() {
axisFeatures = append(axisFeatures, "-link_crt")
}
// This must happen before the addition of flags for Version Script and
// Dynamic List, as these flags must be split on spaces and those must not
linkerFlags = parseCommandLineFlags(linkerFlags, filterOutClangUnknownCflags)
additionalLinkerInputs := bazel.LabelList{}
if props.Version_script != nil {
label := android.BazelLabelForModuleSrcSingle(ctx, *props.Version_script)
additionalLinkerInputs.Add(&label)
linkerFlags = append(linkerFlags, fmt.Sprintf("-Wl,--version-script,$(location %s)", label.Label))
axisFeatures = append(axisFeatures, "android_cfi_exports_map")
}
if props.Dynamic_list != nil {
label := android.BazelLabelForModuleSrcSingle(ctx, *props.Dynamic_list)
additionalLinkerInputs.Add(&label)
linkerFlags = append(linkerFlags, fmt.Sprintf("-Wl,--dynamic-list,$(location %s)", label.Label))
}
la.additionalLinkerInputs.SetSelectValue(axis, config, additionalLinkerInputs)
if axis == bazel.OsConfigurationAxis && (config == bazel.OsDarwin || config == bazel.OsLinux || config == bazel.OsWindows) {
linkerFlags = append(linkerFlags, props.Host_ldlibs...)
}
la.linkopts.SetSelectValue(axis, config, linkerFlags)
if axisFeatures != nil {
la.features.SetSelectValue(axis, config, axisFeatures)
}
runtimeDeps := android.BazelLabelForModuleDepsExcludes(ctx, props.Runtime_libs, props.Exclude_runtime_libs)
if !runtimeDeps.IsEmpty() {
la.runtimeDeps.SetSelectValue(axis, config, runtimeDeps)
}
}
var (
apiSurfaceModuleLibCurrentPackage = "@api_surfaces//" + android.ModuleLibApi.String() + "/current:"
)
func availableToSameApexes(a, b []string) bool {
if len(a) == 0 && len(b) == 0 {
return true
}
differ, _, _ := android.ListSetDifference(a, b)
return !differ
}
var (
apiDomainConfigSettingKey = android.NewOnceKey("apiDomainConfigSettingKey")
apiDomainConfigSettingLock sync.Mutex
)
func getApiDomainConfigSettingMap(config android.Config) *map[string]bool {
return config.Once(apiDomainConfigSettingKey, func() interface{} {
return &map[string]bool{}
}).(*map[string]bool)
}
var (
testApexNameToApiDomain = map[string]string{
"test_broken_com.android.art": "com.android.art",
}
)
// GetApiDomain returns the canonical name of the apex. This is synonymous to the apex_name definition.
// https://cs.android.com/android/_/android/platform/build/soong/+/e3f0281b8897da1fe23b2f4f3a05f1dc87bcc902:apex/prebuilt.go;l=81-83;drc=2dc7244af985a6ad701b22f1271e606cabba527f;bpv=1;bpt=0
// For test apexes, it uses a naming convention heuristic to determine the api domain.
// TODO (b/281548611): Move this build/soong/android
func GetApiDomain(apexName string) string {
if apiDomain, exists := testApexNameToApiDomain[apexName]; exists {
return apiDomain
}
// Remove `test_` prefix
return strings.TrimPrefix(apexName, "test_")
}
// Create a config setting for this apex in build/bazel/rules/apex
// The use case for this is stub/impl selection in cc libraries
// Long term, these config_setting(s) should be colocated with the respective apex definitions.
// Note that this is an anti-pattern: The config_setting should be created from the apex definition
// and not from a cc_library.
// This anti-pattern is needed today since not all apexes have been allowlisted.
func createInApexConfigSetting(ctx android.TopDownMutatorContext, apexName string) {
if apexName == android.AvailableToPlatform || apexName == android.AvailableToAnyApex {
// These correspond to android-non_apex and android-in_apex
return
}
apiDomainConfigSettingLock.Lock()
defer apiDomainConfigSettingLock.Unlock()
// Return if a config_setting has already been created
apiDomain := GetApiDomain(apexName)
acsm := getApiDomainConfigSettingMap(ctx.Config())
if _, exists := (*acsm)[apiDomain]; exists {
return
}
(*acsm)[apiDomain] = true
csa := bazel.ConfigSettingAttributes{
Flag_values: bazel.StringMapAttribute{
"//build/bazel/rules/apex:api_domain": apiDomain,
},
// Constraint this to android
Constraint_values: bazel.MakeLabelListAttribute(
bazel.MakeLabelList(
[]bazel.Label{
bazel.Label{Label: "//build/bazel/platforms/os:android"},
},
),
),
}
ca := android.CommonAttributes{
Name: apiDomain,
}
ctx.CreateBazelConfigSetting(
csa,
ca,
"build/bazel/rules/apex",
)
}
func inApexConfigSetting(apexAvailable string) string {
if apexAvailable == android.AvailableToPlatform {
return bazel.AndroidPlatform
}
if apexAvailable == android.AvailableToAnyApex {
return bazel.AndroidAndInApex
}
apiDomain := GetApiDomain(apexAvailable)
return "//build/bazel/rules/apex:" + apiDomain
}
// Inputs to stub vs impl selection.
type stubSelectionInfo struct {
// Label of the implementation library (e.g. //bionic/libc:libc)
impl bazel.Label
// Axis containing the implementation library
axis bazel.ConfigurationAxis
// Axis key containing the implementation library
config string
// API domain of the apex
// For test apexes (test_com.android.foo), this will be the source apex (com.android.foo)
apiDomain string
// List of dep labels
dynamicDeps *bazel.LabelListAttribute
// Boolean value for determining if the dep is in the same api domain
// If false, the label will be rewritten to to the stub label
sameApiDomain bool
}
func useStubOrImplInApexWithName(ssi stubSelectionInfo) {
lib := ssi.impl
if !ssi.sameApiDomain {
lib = bazel.Label{
Label: apiSurfaceModuleLibCurrentPackage + strings.TrimPrefix(lib.OriginalModuleName, ":"),
}
}
// Create a select statement specific to this apex
inApexSelectValue := ssi.dynamicDeps.SelectValue(bazel.OsAndInApexAxis, inApexConfigSetting(ssi.apiDomain))
(&inApexSelectValue).Append(bazel.MakeLabelList([]bazel.Label{lib}))
ssi.dynamicDeps.SetSelectValue(bazel.OsAndInApexAxis, inApexConfigSetting(ssi.apiDomain), bazel.FirstUniqueBazelLabelList(inApexSelectValue))
// Delete the library from the common config for this apex
implDynamicDeps := ssi.dynamicDeps.SelectValue(ssi.axis, ssi.config)
implDynamicDeps = bazel.SubtractBazelLabelList(implDynamicDeps, bazel.MakeLabelList([]bazel.Label{ssi.impl}))
ssi.dynamicDeps.SetSelectValue(ssi.axis, ssi.config, implDynamicDeps)
if ssi.axis == bazel.NoConfigAxis {
// Set defaults. Defaults (i.e. host) should use impl and not stubs.
defaultSelectValue := ssi.dynamicDeps.SelectValue(bazel.OsAndInApexAxis, bazel.ConditionsDefaultConfigKey)
(&defaultSelectValue).Append(bazel.MakeLabelList([]bazel.Label{ssi.impl}))
ssi.dynamicDeps.SetSelectValue(bazel.OsAndInApexAxis, bazel.ConditionsDefaultConfigKey, bazel.FirstUniqueBazelLabelList(defaultSelectValue))
}
}
func setStubsForDynamicDeps(ctx android.BazelConversionPathContext, axis bazel.ConfigurationAxis,
config string, apexAvailable []string, dynamicLibs bazel.LabelList, dynamicDeps *bazel.LabelListAttribute, ind int, buildNonApexWithStubs bool) {
// Create a config_setting for each apex_available.
// This will be used to select impl of a dep if dep is available to the same apex.
for _, aa := range apexAvailable {
createInApexConfigSetting(ctx.(android.TopDownMutatorContext), aa)
}
apiDomainForSelects := []string{}
for _, apex := range apexAvailable {
apiDomainForSelects = append(apiDomainForSelects, GetApiDomain(apex))
}
// Always emit a select statement for the platform variant.
// This ensures that b build //foo --config=android works
// Soong always creates a platform variant even when the library might not be available to platform.
if !android.InList(android.AvailableToPlatform, apiDomainForSelects) {
apiDomainForSelects = append(apiDomainForSelects, android.AvailableToPlatform)
}
apiDomainForSelects = android.SortedUniqueStrings(apiDomainForSelects)
// Create a select for each apex this library could be included in.
for _, l := range dynamicLibs.Includes {
dep, _ := ctx.ModuleFromName(l.OriginalModuleName)
if c, ok := dep.(*Module); !ok || !c.HasStubsVariants() {
continue
}
// TODO (b/280339069): Decrease the verbosity of the generated BUILD files
for _, apiDomain := range apiDomainForSelects {
var sameApiDomain bool
if apiDomain == android.AvailableToPlatform {
// Platform variants in Soong use equality of apex_available for stub/impl selection.
// https://cs.android.com/android/_/android/platform/build/soong/+/316b0158fe57ee7764235923e7c6f3d530da39c6:cc/cc.go;l=3393-3404;drc=176271a426496fa2688efe2b40d5c74340c63375;bpv=1;bpt=0
// One of the factors behind this design choice is cc_test
// Tests only have a platform variant, and using equality of apex_available ensures
// that tests of an apex library gets its implementation and not stubs.
// TODO (b/280343104): Discuss if we can drop this special handling for platform variants.
sameApiDomain = availableToSameApexes(apexAvailable, dep.(*Module).ApexAvailable())
if linkable, ok := ctx.Module().(LinkableInterface); ok && linkable.Bootstrap() {
sameApiDomain = true
}
} else {
sameApiDomain = android.InList(apiDomain, dep.(*Module).ApexAvailable())
}
ssi := stubSelectionInfo{
impl: l,
axis: axis,
config: config,
apiDomain: apiDomain,
dynamicDeps: dynamicDeps,
sameApiDomain: sameApiDomain,
}
useStubOrImplInApexWithName(ssi)
}
}
}
func (la *linkerAttributes) convertStripProps(ctx android.BazelConversionPathContext, module *Module) {
bp2BuildPropParseHelper(ctx, module, &StripProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if stripProperties, ok := props.(*StripProperties); ok {
la.stripKeepSymbols.SetSelectValue(axis, config, stripProperties.Strip.Keep_symbols)
la.stripKeepSymbolsList.SetSelectValue(axis, config, stripProperties.Strip.Keep_symbols_list)
la.stripKeepSymbolsAndDebugFrame.SetSelectValue(axis, config, stripProperties.Strip.Keep_symbols_and_debug_frame)
la.stripAll.SetSelectValue(axis, config, stripProperties.Strip.All)
la.stripNone.SetSelectValue(axis, config, stripProperties.Strip.None)
}
})
}
func (la *linkerAttributes) convertProductVariables(ctx android.BazelConversionPathContext, productVariableProps android.ProductConfigProperties) {
type productVarDep struct {
// the name of the corresponding excludes field, if one exists
excludesField string
// reference to the bazel attribute that should be set for the given product variable config
attribute *bazel.LabelListAttribute
depResolutionFunc func(ctx android.BazelConversionPathContext, modules, excludes []string) bazel.LabelList
}
// an intermediate attribute that holds Header_libs info, and will be appended to
// implementationDeps at the end, to solve the confliction that both header_libs
// and static_libs use implementationDeps.
var headerDeps bazel.LabelListAttribute
productVarToDepFields := map[string]productVarDep{
// product variables do not support exclude_shared_libs
"Shared_libs": {attribute: &la.implementationDynamicDeps, depResolutionFunc: bazelLabelForSharedDepsExcludes},
"Static_libs": {"Exclude_static_libs", &la.implementationDeps, bazelLabelForStaticDepsExcludes},
"Whole_static_libs": {"Exclude_static_libs", &la.wholeArchiveDeps, bazelLabelForWholeDepsExcludes},
"Header_libs": {attribute: &headerDeps, depResolutionFunc: bazelLabelForHeaderDepsExcludes},
}
for name, dep := range productVarToDepFields {
props, exists := productVariableProps[name]
excludeProps, excludesExists := productVariableProps[dep.excludesField]
// if neither an include nor excludes property exists, then skip it
if !exists && !excludesExists {
continue
}
// Collect all the configurations that an include or exclude property exists for.
// We want to iterate all configurations rather than either the include or exclude because, for a
// particular configuration, we may have either only an include or an exclude to handle.
productConfigProps := make(map[android.ProductConfigOrSoongConfigProperty]bool, len(props)+len(excludeProps))
for p := range props {
productConfigProps[p] = true
}
for p := range excludeProps {
productConfigProps[p] = true
}
for productConfigProp := range productConfigProps {
prop, includesExists := props[productConfigProp]
excludesProp, excludesExists := excludeProps[productConfigProp]
var includes, excludes []string
var ok bool
// if there was no includes/excludes property, casting fails and that's expected
if includes, ok = prop.([]string); includesExists && !ok {
ctx.ModuleErrorf("Could not convert product variable %s property", name)
}
if excludes, ok = excludesProp.([]string); excludesExists && !ok {
ctx.ModuleErrorf("Could not convert product variable %s property", dep.excludesField)
}
dep.attribute.EmitEmptyList = productConfigProp.AlwaysEmit()
dep.attribute.SetSelectValue(
productConfigProp.ConfigurationAxis(),
productConfigProp.SelectKey(),
dep.depResolutionFunc(ctx, android.FirstUniqueStrings(includes), excludes),
)
}
}
la.implementationDeps.Append(headerDeps)
}
func (la *linkerAttributes) finalize(ctx android.BazelConversionPathContext) {
// if system dynamic deps have the default value, any use of a system dynamic library used will
// result in duplicate library errors for bionic OSes. Here, we explicitly exclude those libraries
// from bionic OSes and the no config case as these libraries only build for bionic OSes.
if la.systemDynamicDeps.IsNil() && len(la.usedSystemDynamicDepAsDynamicDep) > 0 {
toRemove := bazelLabelForSharedDeps(ctx, android.SortedKeys(la.usedSystemDynamicDepAsDynamicDep))
la.dynamicDeps.Exclude(bazel.NoConfigAxis, "", toRemove)
la.dynamicDeps.Exclude(bazel.OsConfigurationAxis, "android", toRemove)
la.dynamicDeps.Exclude(bazel.OsConfigurationAxis, "linux_bionic", toRemove)
la.implementationDynamicDeps.Exclude(bazel.NoConfigAxis, "", toRemove)
la.implementationDynamicDeps.Exclude(bazel.OsConfigurationAxis, "android", toRemove)
la.implementationDynamicDeps.Exclude(bazel.OsConfigurationAxis, "linux_bionic", toRemove)
la.implementationDynamicDeps.Exclude(bazel.OsAndInApexAxis, bazel.ConditionsDefaultConfigKey, toRemove)
stubsToRemove := make([]bazel.Label, 0, len(la.usedSystemDynamicDepAsDynamicDep))
for _, lib := range toRemove.Includes {
stubLabelInApiSurfaces := bazel.Label{
Label: apiSurfaceModuleLibCurrentPackage + lib.OriginalModuleName,
}
stubsToRemove = append(stubsToRemove, stubLabelInApiSurfaces)
}
// system libraries (e.g. libc, libm, libdl) belong the com.android.runtime api domain
// dedupe the stubs of these libraries from the other api domains (platform, other_apexes...)
for _, aa := range ctx.Module().(*Module).ApexAvailable() {
la.implementationDynamicDeps.Exclude(bazel.OsAndInApexAxis, inApexConfigSetting(aa), bazel.MakeLabelList(stubsToRemove))
}
la.implementationDynamicDeps.Exclude(bazel.OsAndInApexAxis, bazel.AndroidPlatform, bazel.MakeLabelList(stubsToRemove))
}
if la.systemDynamicDeps.IsNil() && len(la.usedSystemDynamicDepAsStaticDep) > 0 {
toRemove := bazelLabelForStaticDeps(ctx, android.SortedKeys(la.usedSystemDynamicDepAsStaticDep))
la.deps.Exclude(bazel.NoConfigAxis, "", toRemove)
la.deps.Exclude(bazel.OsConfigurationAxis, "android", toRemove)
la.deps.Exclude(bazel.OsConfigurationAxis, "linux_bionic", toRemove)
la.implementationDeps.Exclude(bazel.NoConfigAxis, "", toRemove)
la.implementationDeps.Exclude(bazel.OsConfigurationAxis, "android", toRemove)
la.implementationDeps.Exclude(bazel.OsConfigurationAxis, "linux_bionic", toRemove)
}
la.deps.ResolveExcludes()
la.implementationDeps.ResolveExcludes()
la.dynamicDeps.ResolveExcludes()
la.implementationDynamicDeps.ResolveExcludes()
la.wholeArchiveDeps.ResolveExcludes()
la.systemDynamicDeps.ForceSpecifyEmptyList = true
}
// Relativize a list of root-relative paths with respect to the module's
// directory.
//
// include_dirs Soong prop are root-relative (b/183742505), but
// local_include_dirs, export_include_dirs and export_system_include_dirs are
// module dir relative. This function makes a list of paths entirely module dir
// relative.
//
// For the `include` attribute, Bazel wants the paths to be relative to the
// module.
func bp2BuildMakePathsRelativeToModule(ctx android.BazelConversionPathContext, paths []string) []string {
var relativePaths []string
for _, path := range paths {
// Semantics of filepath.Rel: join(ModuleDir, rel(ModuleDir, path)) == path
relativePath, err := filepath.Rel(ctx.ModuleDir(), path)
if err != nil {
panic(err)
}
relativePaths = append(relativePaths, relativePath)
}
return relativePaths
}
// BazelIncludes contains information about -I and -isystem paths from a module converted to Bazel
// attributes.
type BazelIncludes struct {
AbsoluteIncludes bazel.StringListAttribute
Includes bazel.StringListAttribute
SystemIncludes bazel.StringListAttribute
}
func bp2BuildParseExportedIncludes(ctx android.BazelConversionPathContext, module *Module, includes *BazelIncludes) BazelIncludes {
var exported BazelIncludes
if includes != nil {
exported = *includes
} else {
exported = BazelIncludes{}
}
// cc library Export_include_dirs and Export_system_include_dirs are marked
// "variant_prepend" in struct tag, set their prepend property to true to make
// sure bp2build generates correct result.
exported.Includes.Prepend = true
exported.SystemIncludes.Prepend = true
bp2BuildPropParseHelper(ctx, module, &FlagExporterProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if flagExporterProperties, ok := props.(*FlagExporterProperties); ok {
if len(flagExporterProperties.Export_include_dirs) > 0 {
exported.Includes.SetSelectValue(axis, config, android.FirstUniqueStrings(append(exported.Includes.SelectValue(axis, config), flagExporterProperties.Export_include_dirs...)))
}
if len(flagExporterProperties.Export_system_include_dirs) > 0 {
exported.SystemIncludes.SetSelectValue(axis, config, android.FirstUniqueStrings(append(exported.SystemIncludes.SelectValue(axis, config), flagExporterProperties.Export_system_include_dirs...)))
}
}
})
exported.AbsoluteIncludes.DeduplicateAxesFromBase()
exported.Includes.DeduplicateAxesFromBase()
exported.SystemIncludes.DeduplicateAxesFromBase()
return exported
}
func BazelLabelNameForStaticModule(baseLabel string) string {
return baseLabel + "_bp2build_cc_library_static"
}
func bazelLabelForStaticModule(ctx android.BazelConversionPathContext, m blueprint.Module) string {
label := android.BazelModuleLabel(ctx, m)
if ccModule, ok := m.(*Module); ok && ccModule.typ() == fullLibrary {
return BazelLabelNameForStaticModule(label)
}
return label
}
func bazelLabelForSharedModule(ctx android.BazelConversionPathContext, m blueprint.Module) string {
// cc_library, at it's root name, propagates the shared library, which depends on the static
// library.
return android.BazelModuleLabel(ctx, m)
}
func bazelLabelForStaticWholeModuleDeps(ctx android.BazelConversionPathContext, m blueprint.Module) string {
label := bazelLabelForStaticModule(ctx, m)
if aModule, ok := m.(android.Module); ok {
if android.IsModulePrebuilt(aModule) {
label += "_alwayslink"
}
}
return label
}
func xsdConfigCppTarget(xsd android.XsdConfigBp2buildTargets) string {
return xsd.CppBp2buildTargetName()
}
func bazelLabelForWholeDeps(ctx android.BazelConversionPathContext, modules []string) bazel.LabelList {
return android.BazelLabelForModuleDepsWithFn(ctx, modules, bazelLabelForStaticWholeModuleDeps)
}
func bazelLabelForWholeDepsExcludes(ctx android.BazelConversionPathContext, modules, excludes []string) bazel.LabelList {
return android.BazelLabelForModuleDepsExcludesWithFn(ctx, modules, excludes, bazelLabelForStaticWholeModuleDeps)
}
func bazelLabelForStaticDepsExcludes(ctx android.BazelConversionPathContext, modules, excludes []string) bazel.LabelList {
return android.BazelLabelForModuleDepsExcludesWithFn(ctx, modules, excludes, bazelLabelForStaticModule)
}
func bazelLabelForStaticDeps(ctx android.BazelConversionPathContext, modules []string) bazel.LabelList {
return android.BazelLabelForModuleDepsWithFn(ctx, modules, bazelLabelForStaticModule)
}
func bazelLabelForSharedDeps(ctx android.BazelConversionPathContext, modules []string) bazel.LabelList {
return android.BazelLabelForModuleDepsWithFn(ctx, modules, bazelLabelForSharedModule)
}
func bazelLabelForHeaderDeps(ctx android.BazelConversionPathContext, modules []string) bazel.LabelList {
// This is not elegant, but bp2build's shared library targets only propagate
// their header information as part of the normal C++ provider.
return bazelLabelForSharedDeps(ctx, modules)
}
func bazelLabelForHeaderDepsExcludes(ctx android.BazelConversionPathContext, modules, excludes []string) bazel.LabelList {
// This is only used when product_variable header_libs is processed, to follow
// the pattern of depResolutionFunc
return android.BazelLabelForModuleDepsExcludesWithFn(ctx, modules, excludes, bazelLabelForSharedModule)
}
func bazelLabelForSharedDepsExcludes(ctx android.BazelConversionPathContext, modules, excludes []string) bazel.LabelList {
return android.BazelLabelForModuleDepsExcludesWithFn(ctx, modules, excludes, bazelLabelForSharedModule)
}
type binaryLinkerAttrs struct {
Linkshared *bool
Stem bazel.StringAttribute
Suffix bazel.StringAttribute
}
func bp2buildBinaryLinkerProps(ctx android.BazelConversionPathContext, m *Module) binaryLinkerAttrs {
attrs := binaryLinkerAttrs{}
bp2BuildPropParseHelper(ctx, m, &BinaryLinkerProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
linkerProps := props.(*BinaryLinkerProperties)
staticExecutable := linkerProps.Static_executable
if axis == bazel.NoConfigAxis {
if linkBinaryShared := !proptools.Bool(staticExecutable); !linkBinaryShared {
attrs.Linkshared = &linkBinaryShared
}
} else if staticExecutable != nil {
// TODO(b/202876379): Static_executable is arch-variant; however, linkshared is a
// nonconfigurable attribute. Only 4 AOSP modules use this feature, defer handling
ctx.ModuleErrorf("bp2build cannot migrate a module with arch/target-specific static_executable values")
}
if stem := linkerProps.Stem; stem != nil {
attrs.Stem.SetSelectValue(axis, config, stem)
}
if suffix := linkerProps.Suffix; suffix != nil {
attrs.Suffix.SetSelectValue(axis, config, suffix)
}
})
return attrs
}
type sanitizerValues struct {
features bazel.StringListAttribute
copts bazel.StringListAttribute
additionalCompilerInputs bazel.LabelListAttribute
}
func bp2buildSanitizerFeatures(ctx android.BazelConversionPathContext, m *Module) sanitizerValues {
sanitizerFeatures := bazel.StringListAttribute{}
sanitizerCopts := bazel.StringListAttribute{}
sanitizerCompilerInputs := bazel.LabelListAttribute{}
bp2BuildPropParseHelper(ctx, m, &SanitizeProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
var features []string
if sanitizerProps, ok := props.(*SanitizeProperties); ok {
if sanitizerProps.Sanitize.Integer_overflow != nil && *sanitizerProps.Sanitize.Integer_overflow {
features = append(features, "ubsan_integer_overflow")
}
for _, sanitizer := range sanitizerProps.Sanitize.Misc_undefined {
features = append(features, "ubsan_"+sanitizer)
}
blocklist := sanitizerProps.Sanitize.Blocklist
if blocklist != nil {
// TODO: b/294868620 - Change this not to use the special axis when completing the bug
coptValue := fmt.Sprintf("-fsanitize-ignorelist=$(location %s)", *blocklist)
sanitizerCopts.SetSelectValue(bazel.SanitizersEnabledAxis, bazel.SanitizersEnabled, []string{coptValue})
sanitizerCompilerInputs.SetSelectValue(bazel.SanitizersEnabledAxis, bazel.SanitizersEnabled, bazel.MakeLabelListFromTargetNames([]string{*blocklist}))
}
if sanitizerProps.Sanitize.Cfi != nil && !proptools.Bool(sanitizerProps.Sanitize.Cfi) {
features = append(features, "-android_cfi")
} else if proptools.Bool(sanitizerProps.Sanitize.Cfi) {
features = append(features, "android_cfi")
if proptools.Bool(sanitizerProps.Sanitize.Config.Cfi_assembly_support) {
features = append(features, "android_cfi_assembly_support")
}
}
sanitizerFeatures.SetSelectValue(axis, config, features)
}
})
return sanitizerValues{
features: sanitizerFeatures,
copts: sanitizerCopts,
additionalCompilerInputs: sanitizerCompilerInputs,
}
}
func bp2buildLtoFeatures(ctx android.BazelConversionPathContext, m *Module) bazel.StringListAttribute {
lto_feature_name := "android_thin_lto"
ltoBoolFeatures := bazel.BoolAttribute{}
bp2BuildPropParseHelper(ctx, m, &LTOProperties{}, func(axis bazel.ConfigurationAxis, config string, props interface{}) {
if ltoProps, ok := props.(*LTOProperties); ok {
thinProp := ltoProps.Lto.Thin != nil && *ltoProps.Lto.Thin
thinPropSetToFalse := ltoProps.Lto.Thin != nil && !*ltoProps.Lto.Thin
neverProp := ltoProps.Lto.Never != nil && *ltoProps.Lto.Never
if thinProp {
ltoBoolFeatures.SetSelectValue(axis, config, BoolPtr(true))
return
}
if neverProp || thinPropSetToFalse {
if thinProp {
ctx.ModuleErrorf("lto.thin and lto.never are mutually exclusive but were specified together")
} else {
ltoBoolFeatures.SetSelectValue(axis, config, BoolPtr(false))
}
return
}
}
ltoBoolFeatures.SetSelectValue(axis, config, nil)
})
props := m.GetArchVariantProperties(ctx, &LTOProperties{})
ltoStringFeatures, err := ltoBoolFeatures.ToStringListAttribute(func(boolPtr *bool, axis bazel.ConfigurationAxis, config string) []string {
if boolPtr == nil {
return []string{}
}
if !*boolPtr {
return []string{"-" + lto_feature_name}
}
features := []string{lto_feature_name}
if ltoProps, ok := props[axis][config].(*LTOProperties); ok {
if ltoProps.Whole_program_vtables != nil && *ltoProps.Whole_program_vtables {
features = append(features, "android_thin_lto_whole_program_vtables")
}
}
return features
})
if err != nil {
ctx.ModuleErrorf("Error processing LTO attributes: %s", err)
}
return ltoStringFeatures
}
func convertHiddenVisibilityToFeatureBase(ctx android.BazelConversionPathContext, m *Module) bazel.StringListAttribute {
visibilityHiddenFeature := bazel.StringListAttribute{}
bp2BuildPropParseHelper(ctx, m, &BaseCompilerProperties{}, func(axis bazel.ConfigurationAxis, configString string, props interface{}) {
if baseCompilerProps, ok := props.(*BaseCompilerProperties); ok {
convertHiddenVisibilityToFeatureHelper(&visibilityHiddenFeature, axis, configString, baseCompilerProps.Cflags)
}
})
return visibilityHiddenFeature
}
func convertHiddenVisibilityToFeatureStaticOrShared(ctx android.BazelConversionPathContext, m *Module, isStatic bool) bazel.StringListAttribute {
visibilityHiddenFeature := bazel.StringListAttribute{}
if isStatic {
bp2BuildPropParseHelper(ctx, m, &StaticProperties{}, func(axis bazel.ConfigurationAxis, configString string, props interface{}) {
if staticProps, ok := props.(*StaticProperties); ok {
convertHiddenVisibilityToFeatureHelper(&visibilityHiddenFeature, axis, configString, staticProps.Static.Cflags)
}
})
} else {
bp2BuildPropParseHelper(ctx, m, &SharedProperties{}, func(axis bazel.ConfigurationAxis, configString string, props interface{}) {
if sharedProps, ok := props.(*SharedProperties); ok {
convertHiddenVisibilityToFeatureHelper(&visibilityHiddenFeature, axis, configString, sharedProps.Shared.Cflags)
}
})
}
return visibilityHiddenFeature
}
func convertHiddenVisibilityToFeatureHelper(feature *bazel.StringListAttribute, axis bazel.ConfigurationAxis, configString string, cflags []string) {
if inList(config.VisibilityHiddenFlag, cflags) {
feature.SetSelectValue(axis, configString, []string{"visibility_hidden"})
}
}