grass on windows via cygwin (or interix(opennt) ?

[Venkatesh Raghavan]

Hi,
I tried to compile GRASS with cygwin some times back but ended up
without much success and had almost given up the thought since. I
did not realize about the FIFO problem at that time but after
Angus pointed it out, I was looking for some solutions.

The U/WIN software is supposed to support FIFO and the U/WIN
homepage specifically mentions that "Fifo's (UNIX named pipes) can be
created with mkfifo() and opened as an ordinary file. ". Perhaps compiling
GRASS with U/WIN stands a better chance of success at present.
U/WIN is also available for download for educational, research, and evaluation
purposes at the following URL

http://www.research.att.com/sw/tools/uwin/

Anyone with the time and inclination can perhaps try to compile GRASS with
U/WIN. At the moment, I have little time to try and take a shot at that.

Venkatesh

Michel Wurtz - LTE wrote:

> Angus Carr wrote:
> [...]
> > The real problems you will encounter :
> >
> > FIFO's are not supported by the cygwin dll. You will need to modify the
> > XDRIVER and libraries to use a shared memory message-passing method. Check
> > out MessQ if you want to do this. It was for this very purpose.
>
> Yes, and this is probably the raison why current versions of Grass
> for Windows (Grassland, Blackgrass) are not free.
>
> BTW, why not use a socket based message passing method.  I guess
> this may work on Unix and WIndows, and enough close to the FIFO
> mecanism to ease porting ?
>
> --
> Michel Wurtz    ENGEES - Laboratoire Territoires & Environnement
>                 1, quai Koch - BP 1039, F-67070 STRASBOURG cedex
>                 Tel: +33 03.88.24.82.45  Fax: +33 03.88.37.04.97