[GRASS5] fifo configure

[Wallace, Beverly T]

> -----Original Message-----
> From:	Glynn Clements [SMTP:glynn.clements at virgin.net]
> Sent:	Monday, February 03, 2003 5:51 PM
> To:	Wallace, Beverly T
> Cc:	'grass5 at grass.itc.it'; Andreas Lange
> Subject:	Re: [GRASS5] fifo configure
> 
> 
> Wallace, Beverly T wrote:
> 
> > I recently installed GRASS 5.0.0.  I configured it for fifos and had two
> > problems:
> 
> Just out of curiosity, was there any particular reason for using
> FIFOs? Is this a system which simply doesn't support sockets, or is
> there a problem with the socket code?
> 
[Bev]  No problem with the system or socket code.
Long ago I turned the XDriver into a subroutine so that my GUI could display
GRASS data.  My XDriver subroutine used FIFOs, so I tested it with the GRASS
5.0.0 FIFO version first (as a baby step).  I have since upgraded to the
socket version.
I just wanted to inform the developers about the FIFO problems.

> > (1)  Configuring with "--enable-fifo" is not enough, "--disable-socket"
> is
> > also needed.  Is that how it is supposed to work?  The configure help
> says
> > that "--enable-fifo" will use the FIFO XDriver instead of sockets, which
> > suggests that sockets are automatically disabled.
> 
> OK; this can be fixed easily enough.
> 
> > (2)  The monitorcap file did not work until I added full paths.
> 
> This is due to:
> 
> 	date: 2002/01/04 17:04:17;  author: andreas;  state: Exp;  lines:
> +14 -14
> 	removed absolute paths in monitorcap file
> 
> in:
> 
> 	src/display/devices/HTMLMAP/Gmakefile
> 	src/display/devices/HTMLMAP/moncap.entry
> 	src/display/devices/PNGdriver/Gmakefile
> 	src/display/devices/PNGdriver/moncap.entry
> 	src/display/devices/monitorcap/Gmakefile
> 	src/display/devices/monitorcap/monitorcap
> 
> Andreas: was there a specific reason for this change? It won't work
> with FIFOs (and the field is ignored when using sockets).
> 
> There are two solutions here:
> 
> 1. (the easy way): revert the change.
> 
> 2. (the hard way): modify the code to prepend $GISBASE to the paths. 
> This could be done either in src/libes/raster/io.c (for clients) and
> src/display/devices/lib/connect_fifo.c (for drivers), or by modifying
> R_parse_monitorcap().
> 
> The only reason to choose option 2 is so that the GRASS directory can
> be moved easily.
> 
> -- 
> Glynn Clements <glynn.clements at virgin.net>