=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching gprolog-1.4.4.tar.gz
=> Total size: 3538152 bytes
fetch: http://www.gprolog.org/gprolog-1.4.4.tar.gz: Not Found
fetch: Unable to fetch expected file gprolog-1.4.4.tar.gz
fetch: http://gprolog.univ-paris1.fr/gprolog-1.4.4.tar.gz: Not Found
fetch: Unable to fetch expected file gprolog-1.4.4.tar.gz
gprolog-1.4.4.tar.gz                                     0  B    0  Bps
=> Checksum SHA1 OK for gprolog-1.4.4.tar.gz
=> Checksum RMD160 OK for gprolog-1.4.4.tar.gz
=> Checksum SHA512 OK for gprolog-1.4.4.tar.gz