dcraw_emu fails with OM-1

LibRaw newbie here.

By now LibRaw already supports the last "Olympus" camera OM-1. Unfortunately, the two main raw processing software in Linux, Darktable and RawTherapee, both use dcraw. So I am trying to use LibRaw via its dcraw_emu. Yet, after compiling LibRaw-0.20.2, the sample dcraw_emu gives the usual dcraw error on OM-1 orf files: "Unexpected end of file".

How can I solve this?