Strip libgcc to only keep fallback symbols
We use libgcc as fallback for symbols not present in libclang_rt
builtins, however we didn't know what exact symbols were being used,
some may not be intended to fallback.
Create libgcc_stripped, which only contains unwind symbols from libgcc.
Bug: 29275768
Test: bionic-unit-tests
Change-Id: I5b349fa6138e51663bf3b67109b880b4356da8e8
diff --git a/cc/toolchain_library.go b/cc/toolchain_library.go
index 6494a26..b4c51ab 100644
--- a/cc/toolchain_library.go
+++ b/cc/toolchain_library.go
@@ -34,6 +34,8 @@
type toolchainLibraryDecorator struct {
*libraryDecorator
+ stripper
+
Properties toolchainLibraryProperties
}
@@ -45,7 +47,7 @@
func (library *toolchainLibraryDecorator) linkerProps() []interface{} {
var props []interface{}
props = append(props, library.libraryDecorator.linkerProps()...)
- return append(props, &library.Properties)
+ return append(props, &library.Properties, &library.stripper.StripProperties)
}
// toolchain_library is used internally by the build tool to link the specified
@@ -78,7 +80,17 @@
return android.PathForSource(ctx, "")
}
- return android.PathForSource(ctx, *library.Properties.Src)
+ srcPath := android.PathForSource(ctx, *library.Properties.Src)
+
+ if library.stripper.StripProperties.Strip.Keep_symbols_list != nil {
+ fileName := ctx.ModuleName() + staticLibraryExtension
+ outputFile := android.PathForModuleOut(ctx, fileName)
+ buildFlags := flagsToBuilderFlags(flags)
+ library.stripper.strip(ctx, srcPath, outputFile, buildFlags)
+ return outputFile
+ }
+
+ return srcPath
}
func (library *toolchainLibraryDecorator) nativeCoverage() bool {