>shell/iX> make setup check
>./compile qmail-local.c
>cc: file '/etc/compiler.ccg': No such file or directory

You need to find out what "compile" does on the Linux box and
duplicate its functionality on MPE, or change the makefiles
to invoke gcc directly. If you want to try the simplest fix,
try building a softlink to gcc:

ln -s /usr/local/bin/gcc compile

Is there an autoconf(igure) version of qmail available? That
would sure make things easier.