#!/usr/bin/env python
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# Copyright (C) DSTC Pty Ltd (ACN 052 372 577) 1997, 1998, 1999
# All Rights Reserved.
#
# The software contained on this media is the property of the DSTC Pty
# Ltd.  Use of this software is strictly in accordance with the
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# then you have no rights to use this software in any manner and
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# This software is being provided "AS IS" without warranty of any
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# kind arising out of or in connection with the use or performance of
# this software.
#
# Project:      Fnorb
# File:         $Source: /cvsroot/fnorb/fnorb/script/cpp.py,v $
# Version:      @(#)$RCSfile: cpp.py,v $ $Revision: 1.4 $
#
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""" Module to determine the command to run the C/C++ pre-processor. """


# Standard/built-in modules.
import commands, os, sys


# Commands to run the C/C++ pre-processor on Unixen and Windows 95/NT.
if sys.platform == 'win32':
    # By default, we use the pre-processor that comes with MS Visual C/C++.
    # because Python on win32 does not give us the nice 'commands'
    # style execution environment we resort to nasty stdout reading
    # to detect whether or not cl is in the users PATH
    yyin = os.popen('cl', 'r')
    result = yyin.readline()
    yyin.close()
    if 0 <= result.lower().find('/link'):
        COMMAND = 'cl /nologo /E %s %s'
    else:
        raise "No C/C++ pre-processor found in your PATH!"
  
    
    # If you use 'gcc' then uncomment this instead!
    # You might also want to add a check like that
    # used above.
##    COMMAND = 'gcc -x c -E %s %s'

# Unixen.
else:
    # Look for the forces of goodness and light first ;^)
    (result, output) = commands.getstatusoutput('which gcc')
    if result == 0:
	COMMAND = 'gcc -x c -E %s %s'

    # And then the other stuff!
    else:
	(result, output) = commands.getstatusoutput('which cpp')
	if result == 0:
	    COMMAND = 'cpp %s %s'

	else:
	    raise "No C/C++ pre-processor on your $PATH!"

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