Ryan and Neil,
I can't speak for any changes since 5.11.1, however you will need to set
the MTMACH parameter
to a little endian type for an intel in $GEMPAK/include/MCHPRM.Darwin.
The power mac I developed the 5.11.1 release on was big endian, and GEMPAK
has some legacy settings for byte order
in fortran rather than newer endian tests in the code, so I set the big
endian MTAPOL value in 5.11.1 for byte order. If you are
building on a little endian platform, try setting MTMACH=MTLNUX.
The byte order error is apparent in reading the binary map files since
then need to be flipped for little endian processors (as well as data
data files which you would eventually run up against).
Savannah River National Laboratory