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// Copyright (C) 2019 The Android Open Source Project
//
// 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 apex
import (
"strings"
"android/soong/android"
"android/soong/cc"
"github.com/google/blueprint/proptools"
)
const (
vndkApexName = "com.android.vndk"
vndkApexNamePrefix = vndkApexName + ".v"
)
// apex_vndk creates a special variant of apex modules which contains only VNDK libraries.
// If `vndk_version` is specified, the VNDK libraries of the specified VNDK version are gathered automatically.
// If not specified, then the "current" versions are gathered.
func vndkApexBundleFactory() android.Module {
bundle := newApexBundle()
bundle.vndkApex = true
bundle.AddProperties(&bundle.vndkProperties)
android.AddLoadHook(bundle, func(ctx android.LoadHookContext) {
ctx.AppendProperties(&struct {
Compile_multilib *string
}{
proptools.StringPtr("both"),
})
})
return bundle
}
func (a *apexBundle) vndkVersion() string {
return proptools.StringDefault(a.vndkProperties.Vndk_version, "current")
}
type apexVndkProperties struct {
// Indicates VNDK version of which this VNDK APEX bundles VNDK libs.
Vndk_version *string
}
func apexVndkMutator(mctx android.TopDownMutatorContext) {
if ab, ok := mctx.Module().(*apexBundle); ok && ab.vndkApex {
if ab.IsNativeBridgeSupported() {
mctx.PropertyErrorf("native_bridge_supported", "%q doesn't support native bridge binary.", mctx.ModuleType())
}
vndkVersion := ab.vndkVersion()
if vndkVersion != "" {
apiLevel, err := android.ApiLevelFromUser(mctx, vndkVersion)
if err != nil {
mctx.PropertyErrorf("vndk_version", "%s", err.Error())
return
}
targets := mctx.MultiTargets()
if len(targets) > 0 && apiLevel.LessThan(cc.MinApiForArch(mctx, targets[0].Arch.ArchType)) {
// Disable VNDK APEXes for VNDK versions less than the minimum supported API
// level for the primary architecture.
ab.Disable()
}
}
}
}
func apexVndkDepsMutator(mctx android.BottomUpMutatorContext) {
if m, ok := mctx.Module().(*cc.Module); ok && cc.IsForVndkApex(mctx, m) {
vndkVersion := m.VndkVersion()
if vndkVersion == "" {
return
}
vndkVersion = "v" + vndkVersion
vndkApexName := "com.android.vndk." + vndkVersion
if mctx.OtherModuleExists(vndkApexName) {
mctx.AddReverseDependency(mctx.Module(), sharedLibTag, vndkApexName)
}
} else if a, ok := mctx.Module().(*apexBundle); ok && a.vndkApex {
vndkVersion := proptools.StringDefault(a.vndkProperties.Vndk_version, "current")
mctx.AddDependency(mctx.Module(), prebuiltTag, cc.VndkLibrariesTxtModules(vndkVersion, mctx)...)
}
}
// name is module.BaseModuleName() which is used as LOCAL_MODULE_NAME and also LOCAL_OVERRIDES_*
func makeCompatSymlinks(name string, ctx android.ModuleContext) (symlinks android.InstallPaths) {
// small helper to add symlink commands
addSymlink := func(target string, dir android.InstallPath, linkName string) {
symlinks = append(symlinks, ctx.InstallAbsoluteSymlink(dir, linkName, target))
}
// TODO(b/142911355): [VNDK APEX] Fix hard-coded references to /system/lib/vndk
// When all hard-coded references are fixed, remove symbolic links
// Note that we should keep following symlinks for older VNDKs (<=29)
// Since prebuilt vndk libs still depend on system/lib/vndk path
if strings.HasPrefix(name, vndkApexNamePrefix) {
vndkVersion := strings.TrimPrefix(name, vndkApexNamePrefix)
if ver, err := android.ApiLevelFromUser(ctx, vndkVersion); err != nil {
ctx.ModuleErrorf("apex_vndk should be named as %v<ver:number>: %s", vndkApexNamePrefix, name)
return
} else if ver.GreaterThan(android.SdkVersion_Android10) {
return
}
// the name of vndk apex is formatted "com.android.vndk.v" + version
apexName := vndkApexNamePrefix + vndkVersion
if ctx.Config().Android64() {
dir := android.PathForModuleInPartitionInstall(ctx, "system", "lib64")
addSymlink("/apex/"+apexName+"/lib64", dir, "vndk-sp-"+vndkVersion)
addSymlink("/apex/"+apexName+"/lib64", dir, "vndk-"+vndkVersion)
}
if !ctx.Config().Android64() || ctx.DeviceConfig().DeviceSecondaryArch() != "" {
dir := android.PathForModuleInPartitionInstall(ctx, "system", "lib")
addSymlink("/apex/"+apexName+"/lib", dir, "vndk-sp-"+vndkVersion)
addSymlink("/apex/"+apexName+"/lib", dir, "vndk-"+vndkVersion)
}
}
// http://b/121248172 - create a link from /system/usr/icu to
// /apex/com.android.i18n/etc/icu so that apps can find the ICU .dat file.
// A symlink can't overwrite a directory and the /system/usr/icu directory once
// existed so the required structure must be created whatever we find.
if name == "com.android.i18n" {
dir := android.PathForModuleInPartitionInstall(ctx, "system", "usr")
addSymlink("/apex/com.android.i18n/etc/icu", dir, "icu")
}
return symlinks
}
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