platform_build_soong/cc/bp2build.go
Liz Kammer 5f5dbaad65 Handle xsd config more like other partitions
This is prep work to add additional special handling for genrule
generated headers as there will be similar partitioning for those
headers.

Test: go test soong tests
Change-Id: Ib63e7e4f7554b2b7b7bc78b2825b20c05403216a
2023-07-24 13:01:22 -04:00

1970 lines
78 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"
"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"
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
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)
}
}
}
}
// 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)},
// 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)},
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
// 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
}
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.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.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).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)
features := compilerAttrs.features.Clone().Append(linkerAttrs.features).Append(bp2buildSanitizerFeatures(ctx, module))
features = features.Append(bp2buildLtoFeatures(ctx, module))
features = features.Append(convertHiddenVisibilityToFeatureBase(ctx, module))
features.DeduplicateAxesFromBase()
addMuslSystemDynamicDeps(ctx, linkerAttrs)
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
}
func bp2buildSanitizerFeatures(ctx android.BazelConversionPathContext, m *Module) bazel.StringListAttribute {
sanitizerFeatures := bazel.StringListAttribute{}
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 {
// Format the blocklist name to be used in a feature name
blocklistFeatureSuffix := strings.Replace(strings.ToLower(*blocklist), ".", "_", -1)
features = append(features, "sanitizer_blocklist_"+blocklistFeatureSuffix)
}
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 sanitizerFeatures
}
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"})
}
}