Prepend 'call' to all non-cygwin commands to prevent incredibuild from aborting

pylib/gyp/generator/msvs.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import copy
 import ntpath
 import os
 import posixpath
 import re
 import subprocess
@@ skipping 276 matching lines @@
     cmd += 'bash -c "%(cmd)s"'
     cmd = cmd % {'cygwin_dir': cygwin_dir,
                  'cmd': direct_cmd}
     return input_dir_preamble + cmd
   else:
     # Convert cat --> type to mimic unix.
     if cmd[0] == 'cat':
       command = ['type']
     else:
       command = [cmd[0].replace('/', '\\')]
+    # Add call before command to ensure that commands can be tied together one
+    # after the other without aborting in Incredibuild, since IB makes a bat
+    # file out of the raw command string, and some commands (like python) are
+    # actually batch files themselves.
+    command.insert(0, 'call')
     # Fix the paths
     # TODO(quote): This is a really ugly heuristic, and will miss path fixing
     #              for arguments like "--arg=path" or "/opt:path".
     # If the argument starts with a slash or dash, it's probably a command line
     # switch
     arguments = [i if (i[:1] in "/-") else _FixPath(i) for i in cmd[1:]]
     arguments = [i.replace('$(InputDir)','%INPUTDIR%') for i in arguments]
     arguments = [MSVSSettings.FixVCMacroSlashes(i) for i in arguments]
     if quote_cmd:
       # Support a mode for using cmd directly.
@@ skipping 2810 matching lines @@
   action_spec.extend(
       # TODO(jeanluc) 'Document' for all or just if as_sources?
       [['FileType', 'Document'],
        ['Command', command],
        ['Message', description],
        ['Outputs', outputs]
       ])
   if additional_inputs:
     action_spec.append(['AdditionalInputs', additional_inputs])
   actions_spec.append(action_spec)