Add profile option to spack script.

bin/spack

@@ -58,14 +58,16 @@ parser = argparse.ArgumentParser(
     description='Spack: the Supercomputing PACKage Manager.')
 parser.add_argument('-V', '--version', action='version',
                     version="%s" % spack.spack_version)
-parser.add_argument('-v', '--verbose', action='store_true', dest='verbose',
+parser.add_argument('-v', '--verbose', action='store_true',
                     help="Print additional output during builds")
-parser.add_argument('-d', '--debug', action='store_true', dest='debug',
+parser.add_argument('-d', '--debug', action='store_true',
                     help="Write out debug logs during compile")
-parser.add_argument('-k', '--insecure', action='store_true', dest='insecure',
+parser.add_argument('-k', '--insecure', action='store_true',
                     help="Do not check ssl certificates when downloading archives.")
-parser.add_argument('-m', '--mock', action='store_true', dest='mock',
+parser.add_argument('-m', '--mock', action='store_true',
                     help="Use mock packages instead of real ones.")
+parser.add_argument('-p', '--profile', action='store_true',
+                    help="Profile execution using cProfile.")
 
 # each command module implements a parser() function, to which we pass its
 # subparser for setup.
@@ -85,6 +87,7 @@ if len(sys.argv) == 1:
 # actually parse the args.
 args = parser.parse_args()
 
+def main():
     # Set up environment based on args.
     tty.set_verbose(args.verbose)
     tty.set_debug(args.debug)
@@ -124,3 +127,9 @@ elif isinstance(return_val, int):
         sys.exit(return_val)
     else:
         tty.die("Bad return value from command %s: %s" % (args.command, return_val))
+
+if args.profile:
+    import cProfile
+    cProfile.run('main()', sort='tottime')
+else:
+    main()