# echo $PERL5LIB
/home/henry/gitr/MAS/lib 

# prove ./t/8bit.t
./t/8bit.t .. Can't locate MAS::Global in @INC (@INC entries checked: /home/henry/gitr/MAS/lib /etc/perl (... others omitted)

# find /home/henry/gitr/MAS/lib -name Global.pm
/home/henry/gitr/MAS/lib/MAS/Global.pm  # It's in $INC[0]

# perl -c /home/henry/gitr/MAS/lib/MAS/Global.pm
/home/henry/gitr/MAS/lib/MAS/Global.pm syntax OK