Reduce compilation of parallel enum on Travis
Reduce compilation of parallel enum on Travis

fplll/fplll,cr-marcstevens/fplll,fplll/fplll,dstehle/fplll,fplll/fplll,dstehle/fplll,cr-marcstevens/fplll,fplll/fplll,fplll/fplll,dstehle/fplll,cr-marcstevens/fplll,cr-marcstevens/fplll