[GRASS5] Re: [winGRASS] Building LIBGIS (GRASS60beta1) under MINGW

[Mike Thomas]

Hi Javier.

Javier A. Yebrin wrote:
> (cc grass5)
> 
> Thanks Thomas for your support and comments. 
> I'm not a programmer so I find it very difficult to understand how to get
> this working. 
> If you can give me some additional hints, specially for the problem with
> wait.h and its functions, I'll be very much happy.
> I extend this request to the GRASS developers list, as I believe they could
> contribute to this quest just with a little effort. 

Probably more so than me as I am out of touch with the current GRASS 
development effort.

My understanding is that "sys/wait.h" defines functions for waiting for 
forked processes to return.  The Windows equivalent would be Windows API 
functions like WaitForSingleObject() or WaitForMultipleObjects() after 
CreateProcess().  If you wanted to use Visual C Runtime library 
functions to start a process and wait for it to return (as used by 
MinGW32) you could start processes off with the spawn family of 
functions with P_WAIT as the mode argument.  You will need to review 
your particular segments of code and see what is best for you there.

To get more information on the above functions google for strings like 
"msdn spawn functions" and you will get straight to the official 
Microsoft MSDN documentation including examples.

Cheers

Mike Thomas.


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