4238c65a17
The module types in scope of this conversion are
1. cc_library and cc_library_shared (non-null llndk or stubs prop)
2. cc_library_headers (all)
For (2), we need some postprocessing on the results of the parser
bp2BuildParseBaseProps. This is necessary because arch and os specific
API exports need to be flattened and added to the generateed API headers
target along NoConfigAxis
e.g.
```
The api equivalent of
cc_library_headers (
name = "lifoo",
deps = select({
"//build/bazel/platforms/arch:arm": ["arm_deps"],
"//build/bazel/platforms/arch:arm64": ["arm64_deps"],
}),
)
should be
cc_api_library_headers (
name = "lifoo",
deps = ["arm_deps", "arm64_deps"],
)
```
For (1), we also need to generate 1:many header api targets so that
arch-specific deps can propagate arch metadata to the top-level
api_domain rule
Test: go test ./bp2build
Test: go test ./cc
Change-Id: Ie40cba1ac8e89f290b3d926c190d5e93abd52859
123 lines
3.9 KiB
Go
123 lines
3.9 KiB
Go
// Copyright 2022 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package android
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import (
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"github.com/google/blueprint"
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"android/soong/bazel"
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)
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func init() {
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RegisterApiDomainBuildComponents(InitRegistrationContext)
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}
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func RegisterApiDomainBuildComponents(ctx RegistrationContext) {
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ctx.RegisterModuleType("api_domain", ApiDomainFactory)
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}
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type ApiSurface int
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// TODO(b/246656800): Reconcile with android.SdkKind
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const (
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PublicApi ApiSurface = iota
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SystemApi
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VendorApi
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)
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func (a ApiSurface) String() string {
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switch a {
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case PublicApi:
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return "publicapi"
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case SystemApi:
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return "systemapi"
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case VendorApi:
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return "vendorapi"
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default:
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return "invalid"
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}
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}
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type apiDomain struct {
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ModuleBase
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BazelModuleBase
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properties apiDomainProperties
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}
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type apiDomainProperties struct {
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// cc library contributions (.h files/.map.txt) of this API domain
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// This dependency is a no-op in Soong, but the corresponding Bazel target in the bp2build workspace will provide a `CcApiContributionInfo` provider
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Cc_api_contributions []string
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}
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func ApiDomainFactory() Module {
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m := &apiDomain{}
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m.AddProperties(&m.properties)
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InitAndroidArchModule(m, DeviceSupported, MultilibBoth)
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return m
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}
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func (a *apiDomain) DepsMutator(ctx BottomUpMutatorContext) {
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for _, cc := range a.properties.Cc_api_contributions {
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// Use FarVariationDependencies since the variants of api_domain is a subset of the variants of the dependency cc module
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// Creating a dependency on the first variant that matches (os,arch) is ok since this is a no-op in Soong
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// The primary function of this dependency is to create a connected graph in the corresponding bp2build workspace
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ctx.AddFarVariationDependencies(ctx.Target().Variations(), nil, cc)
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}
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}
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// API domain does not have any builld actions yet
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func (a *apiDomain) GenerateAndroidBuildActions(ctx ModuleContext) {
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}
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const (
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apiContributionSuffix = ".contribution"
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)
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// ApiContributionTargetName returns the name of the bp2build target (e.g. cc_api_contribution) of contribution modules (e.g. ndk_library)
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// A suffix is necessary to prevent a name collision with the base target in the same bp2build bazel package
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func ApiContributionTargetName(moduleName string) string {
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return moduleName + apiContributionSuffix
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}
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// For each contributing cc_library, format the name to its corresponding contribution bazel target in the bp2build workspace
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func contributionBazelAttributes(ctx TopDownMutatorContext, contributions []string) bazel.LabelListAttribute {
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addSuffix := func(ctx BazelConversionPathContext, module blueprint.Module) string {
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baseLabel := BazelModuleLabel(ctx, module)
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return ApiContributionTargetName(baseLabel)
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}
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bazelLabels := BazelLabelForModuleDepsWithFn(ctx, contributions, addSuffix)
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return bazel.MakeLabelListAttribute(bazelLabels)
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}
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type bazelApiDomainAttributes struct {
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Cc_api_contributions bazel.LabelListAttribute
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}
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var _ ApiProvider = (*apiDomain)(nil)
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func (a *apiDomain) ConvertWithApiBp2build(ctx TopDownMutatorContext) {
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props := bazel.BazelTargetModuleProperties{
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Rule_class: "api_domain",
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Bzl_load_location: "//build/bazel/rules/apis:api_domain.bzl",
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}
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attrs := &bazelApiDomainAttributes{
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Cc_api_contributions: contributionBazelAttributes(ctx, a.properties.Cc_api_contributions),
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}
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ctx.CreateBazelTargetModule(props, CommonAttributes{
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Name: ctx.ModuleName(),
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}, attrs)
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}
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