The object in this prebuilt directory can be built from platform/tools/base From the commit 5b959450c3606d41d955637ed59ba580c21fb3ce Jar is obtained from git_studio-master-dev@4717446 Note: Before dropping the ddmlib-prebuilt.jar, please run the following command to strip the jar manifest file, which causes hidden dependency on jars in the Class-Path. $ zip -d ddmlib-prebuilt.jar META-INF/MANIFEST.MF