Add java_boot_libs to sdk
The build has some implicit dependencies (via the boot jars
configuration) on a number of modules, e.g. core-oj, apache-xml, that
are part of the java boot class path and which are provided by mainline
modules (e.g. art, conscrypt, runtime-i18n) but which are not otherwise
used outside those mainline modules.
As they are not needed outside the mainline modules adding them to
the sdk/module-exports as either java_libs, or java_header_libs would
end up exporting more information than was strictly necessary. This
change adds the java_boot_libs property to allow those modules to be
exported as part of the sdk/module_exports without exposing any
unnecessary information.
Some points to note:
* The java_import has to have a valid file for the src property
otherwise it will be disabled.
* The src property is supposed to reference a jar file but the
java_boot_libs property will make it reference an empty file (not
an empty jar) so that any attempt to use that file as a jar, e.g.
compiling against it, will cause a build failure.
* The name of the file passed to the src property should make it
clear that the file is not intended to be used.
* The test makes sure that only the jar file is copied to the
snapshot.
Test: m nothing
Bug: 171061220
Change-Id: I175331e4c8e3874ab70a67cdc2f76ed1576e41eb
diff --git a/sdk/update.go b/sdk/update.go
index 377aaae..b5bc9f4 100644
--- a/sdk/update.go
+++ b/sdk/update.go
@@ -653,6 +653,9 @@
filesToZip android.Paths
zipsToMerge android.Paths
+ // The path to an empty file.
+ emptyFile android.WritablePath
+
prebuiltModules map[string]*bpModule
prebuiltOrder []*bpModule
@@ -703,6 +706,19 @@
s.zipsToMerge = append(s.zipsToMerge, tmpZipPath)
}
+func (s *snapshotBuilder) EmptyFile() android.Path {
+ if s.emptyFile == nil {
+ ctx := s.ctx
+ s.emptyFile = android.PathForModuleOut(ctx, "empty")
+ s.ctx.Build(pctx, android.BuildParams{
+ Rule: android.Touch,
+ Output: s.emptyFile,
+ })
+ }
+
+ return s.emptyFile
+}
+
func (s *snapshotBuilder) AddPrebuiltModule(member android.SdkMember, moduleType string) android.BpModule {
name := member.Name()
if s.prebuiltModules[name] != nil {