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Message-Id: <199912030216.UAA06537@hp2.xraylith.wisc.edu>
To: Keraba <keraba AT yahoo DOT com>
cc: cygwin AT sourceware DOT cygnus DOT com
Subject: Re: ming exec forks ??? 
In-reply-to: Your message of "Thu, 02 Dec 1999 17:41:59 PST."
             <19991203014159 DOT 28712 DOT qmail AT web213 DOT mail DOT yahoo DOT com> 
Date: Thu, 02 Dec 1999 20:16:30 -0600
From: Mumit Khan <khan AT NanoTech DOT Wisc DOT EDU>

Keraba <keraba AT yahoo DOT com> writes:
> Hi,
> 
> I'm having trouble with the execv() system call. With the Cygwin
> gcc and libraries it works fine, but with the Ming equivalents
> it acts more like fork(), spawning off a child then continuing,
> without waiting for the child to die first.

I don't know what the problem is, but under windows, you probably
want _spawnv[pe] instead. Go to MS web site and search the docs
-- it's all online.

> 
> I'm sorry, I'd write to the ming-gcc list if I knew of one.

http://www.egroups.com/lists/mingw32/

Here's a trivial example:

  /* 
   * spawn test:
   */

  #include <stdio.h>
  #include <process.h>

  int 
  main ()
  {
    char *argv[3];
    int retcode;

    /* Set up argv */
    argv[0] = "ls";
    argv[1] = "-l";
    argv[2] = NULL;

    fprintf (stderr, "Spawing child: %s\n", argv[0]);
    retcode = _spawnvp (_P_WAIT, argv[0], argv);
    if (retcode == -1)
      perror (argv[0]);

    fprintf (stderr, "Child done: retcode = %d\n", retcode);

    return 0;
  }

Regards,
Mumit


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