Repack libgcc.a to only include required objects
Previous solution by using objcopy uses a quirky behaviour of the GNU
objcopy and there is no equivalent option in llvm-objcopy.
Instead of removing symbols, extract and repack libgcc to only include
required objects.
Bug: 142585047
Test: presubmit
Change-Id: I58af74c18838f797e481da38c3265f0624fddf99
diff --git a/cc/toolchain_library.go b/cc/toolchain_library.go
index fef4508..dfc6f76 100644
--- a/cc/toolchain_library.go
+++ b/cc/toolchain_library.go
@@ -29,6 +29,9 @@
type toolchainLibraryProperties struct {
// the prebuilt toolchain library, as a path from the top of the source tree
Src *string `android:"arch_variant"`
+
+ // Repack the archive with only the selected objects.
+ Repack_objects_to_keep []string `android:"arch_variant"`
}
type toolchainLibraryDecorator struct {
@@ -90,6 +93,14 @@
return outputFile
}
+ if library.Properties.Repack_objects_to_keep != nil {
+ fileName := ctx.ModuleName() + staticLibraryExtension
+ outputFile := android.PathForModuleOut(ctx, fileName)
+ TransformArchiveRepack(ctx, srcPath, outputFile, library.Properties.Repack_objects_to_keep)
+
+ return outputFile
+ }
+
return srcPath
}