This file was made on March 27, 2012

How to build GAMESS version 11 Aug 2011 (R1) with CHARMM (c36b2,c37a2):

This is example for 64 bit gnu platforms (gfortran) in parallel, but
it might work with others, too.

 1. copy all gamess/source files from GAMESS distribution to CHARMM
    source tree (mkdir source/gamint/gamess first):
    cp ~/gamess-orig/gamess/source/* source/gamint/gamess
    rename nmr.src into nmrgms.src
    rename ewald.src into ewaldgms.src
    rename vector.src into vector.src_unused

 2. unpack and untar the gamess-20110811.1-charmm.tar.gz file to some
    empty directory

 3. overwrite source/gamint/gamess files from the patch-gamess directory
    in gamess-20110811.1-charmm.tar.gz file
    cp patch-gamess/* source/gamint/gamess

 4. copy patch-charmm/gmscomp from .tar file to build/UNX directory

 5. copy patch-charmm/actvte.f to tool directory

 6. copy patch-charmm/ddi.src to source/gamint

 7a. only for c36b2: copy patch-charmm/Makefile_gnu build/UNX
 7b. only for c37a2: copy patch-charmm/gukini.src source/gukint

 8. run standard parallel CHARMM compile:

    install.com gnu xxlarge M mpif90 Q

 9. The above should produce a working executable which you may want
    to test and get the following result:
    ABNR>       10-116448.48250     13.05082      4.58542      0.01550

    cd test ; mkdir -p scratch ; rm scratch/*
    ../exec/gnu_M/charmm -i cquantumtest/gmstst.inp|grep 'ABNR>'|tail -1

NOTE for older versions:

Depending on the CHARMM version you may experience some name clashes,
ie the subroutine has the same name in the CHARMM and in the
GAMESS. The fix is simply to rename the subroutines and corresponding
calls in one of the programs (usually the one where the problem
routine is in single file).