add argparse support to Install.py in message lib

from __future__ import print_function

import sys,os,re,subprocess

sys.path.append('..')

from install_helpers import error,get_cpus,fullpath,which

from install_helpers import get_cpus,fullpath

from argparse import ArgumentParser

parser = ArgumentParser(prog='Install.py',

                        description="LAMMPS library build wrapper script")

# help message

Syntax from lib dir: python Install.py -m

                 or: python Install.py -s -z 

specify zero or more options, order does not matter

  -m = parallel build of CSlib library

  -s = serial build of CSlib library

  -z = build CSlib library with ZMQ socket support, default = no ZMQ support

Example:

make lib-message args="-m -z"   # build parallel CSlib with ZMQ support

make lib-message args="-s"   # build serial CSlib with no ZMQ support

"""

# parse args

args = sys.argv[1:]

nargs = len(args)

if nargs == 0: error(help=help)

mpiflag = False

serialflag = False

zmqflag = False

iarg = 0

while iarg < nargs:

  if args[iarg] == "-m":

    mpiflag = True

    iarg += 1

  elif args[iarg] == "-s":

    serialflag = True

    iarg += 1

  elif args[iarg] == "-z":

    zmqflag = True

    iarg += 1

  else: error(help=help)

if (not mpiflag and not serialflag):

  error("Must use either -m or -s flag")

if (mpiflag and serialflag):

  error("Cannot use -m and -s flag at the same time")

pgroup = parser.add_mutually_exclusive_group()

pgroup.add_argument("-m", "--mpi", action="store_true",

                    help="parallel build of CSlib with MPI")

pgroup.add_argument("-s", "--serial", action="store_true",

                    help="serial build of CSlib")

parser.add_argument("-z", "--zmq", default=False, action="store_true",

                    help="build CSlib with ZMQ socket support, default ()")

args = parser.parse_args()

# print help message and exit, if neither build nor path options are given

if args.mpi == False and args.serial == False:

  parser.print_help()

  sys.exit(help)

mpiflag = args.mpi

serialflag = args.serial

zmqflag = args.zmq

# build CSlib

# copy resulting lib to cslib/src/libmessage.a