The environment variable is to be used if the caller knows that the default objdump can't parse Windows DLL files (COFF-PE). On Fedora, Debian, and OpenSUSE, the default objdump can, and obviously the native one on Windows can too. Signed-off-by: Thiago Macieira <thiago@macieira.org> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>