platform_build_soong/cc/snapshot_utils.go
Inseob Kim eec88e1de8 Add vendor snapshot modules
This implements four modules (static/shared/header libraries, and
binaries) for vendor snapshot. These modules will override source
modules if BOARD_VNDK_VERSION != current.

Bug: 65377115
Test: 1) VNDK_SNAPSHOT_BUILD_ARTIFACTS=true m dist vndk vendor-snapshot
Test: 2) install snapshot under source tree
Test: 3) set BOARD_VNDK_VERSION and boot cuttlefish
Change-Id: I24ddb4c3aa6abeab60bbfd31bcbd8753e2592dc5
2020-02-07 02:59:24 +09:00

131 lines
3.9 KiB
Go

// Copyright 2020 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 cc
import (
"strings"
"android/soong/android"
)
var (
headerExts = []string{".h", ".hh", ".hpp", ".hxx", ".h++", ".inl", ".inc", ".ipp", ".h.generic"}
)
type snapshotLibraryInterface interface {
exportedFlagsProducer
libraryInterface
}
var _ snapshotLibraryInterface = (*prebuiltLibraryLinker)(nil)
var _ snapshotLibraryInterface = (*libraryDecorator)(nil)
type snapshotMap struct {
snapshots map[string]string
}
func newSnapshotMap() *snapshotMap {
return &snapshotMap{
snapshots: make(map[string]string),
}
}
func snapshotMapKey(name string, arch android.ArchType) string {
return name + ":" + arch.String()
}
// Adds a snapshot name for given module name and architecture.
// e.g. add("libbase", X86, "libbase.vndk.29.x86")
func (s *snapshotMap) add(name string, arch android.ArchType, snapshot string) {
s.snapshots[snapshotMapKey(name, arch)] = snapshot
}
// Returns snapshot name for given module name and architecture, if found.
// e.g. get("libcutils", X86) => "libcutils.vndk.29.x86", true
func (s *snapshotMap) get(name string, arch android.ArchType) (snapshot string, found bool) {
snapshot, found = s.snapshots[snapshotMapKey(name, arch)]
return snapshot, found
}
func exportedHeaders(ctx android.SingletonContext, l exportedFlagsProducer) android.Paths {
var ret android.Paths
// Headers in the source tree should be globbed. On the contrast, generated headers
// can't be globbed, and they should be manually collected.
// So, we first filter out intermediate directories (which contains generated headers)
// from exported directories, and then glob headers under remaining directories.
for _, path := range append(l.exportedDirs(), l.exportedSystemDirs()...) {
dir := path.String()
// Skip if dir is for generated headers
if strings.HasPrefix(dir, android.PathForOutput(ctx).String()) {
continue
}
exts := headerExts
// Glob all files under this special directory, because of C++ headers.
if strings.HasPrefix(dir, "external/libcxx/include") {
exts = []string{""}
}
for _, ext := range exts {
glob, err := ctx.GlobWithDeps(dir+"/**/*"+ext, nil)
if err != nil {
ctx.Errorf("%#v\n", err)
return nil
}
for _, header := range glob {
if strings.HasSuffix(header, "/") {
continue
}
ret = append(ret, android.PathForSource(ctx, header))
}
}
}
// Collect generated headers
for _, header := range append(l.exportedGeneratedHeaders(), l.exportedDeps()...) {
// TODO(b/148123511): remove exportedDeps after cleaning up genrule
if strings.HasSuffix(header.Base(), "-phony") {
continue
}
ret = append(ret, header)
}
return ret
}
func copyFile(ctx android.SingletonContext, path android.Path, out string) android.OutputPath {
outPath := android.PathForOutput(ctx, out)
ctx.Build(pctx, android.BuildParams{
Rule: android.Cp,
Input: path,
Output: outPath,
Description: "Cp " + out,
Args: map[string]string{
"cpFlags": "-f -L",
},
})
return outPath
}
func writeStringToFile(ctx android.SingletonContext, content, out string) android.OutputPath {
outPath := android.PathForOutput(ctx, out)
ctx.Build(pctx, android.BuildParams{
Rule: android.WriteFile,
Output: outPath,
Description: "WriteFile " + out,
Args: map[string]string{
"content": content,
},
})
return outPath
}