A quick 'n' dirty workaround until the above patch is applied is to symlink empty_cursor.xbm to /, where ev_calibrate seems to be looking for it.
$ sudo ln -s /usr/share/xf86-input-evtouch/empty_cursor.xbm /empty_cursor.xbm -- Olivier Mehani <olivier.meh...@inria.fr> PGP fingerprint: 4435 CF6A 7C8D DD9B E2DE F5F9 F012 A6E2 98C6 6655
pgpfDmpOPmdzX.pgp
Description: PGP signature
