[GRASS5] current WinGRASS binaries compiled without PNG?

Richard Greenwood rich at greenwoodmap.com
Tue Mar 2 21:56:48 EST 2004

Glynn Clements wrote:

> Richard Greenwood wrote:
>>>I've been trying to track down a PNG problem with GRASS for CYGWIN 
>>>binaries downloaded from the main WinGRASS download site. When d.mon 
>>>start=PNG is invoked, it returns the following error:
>>>ERROR: no such monitor 'PNG"
>>>No such monitor as 'PNG'
>>>Problem selecting PNG. Will try once more
>>>No such monitor as 'PNG'
>>>My read is that this indicates the binaries were compiled -without PNG.
>>>Is this correct?
>>>If, so, can new binaries be compiled with PNG? Is PNG a problem for 
>>>Thanks very much for your help.
>>>Michael Barton
>>I think I compiled the 5.0.3 binaries at:
>>  http://grass.ibiblio.org/grass5/binary/windows_cygnus/wingrass_xserver/
>>And it was compiled with PNG support (see grass5.0.3_config.log in above 
> The config.log file says:
>  GD support:                 no
> This means that the PNG driver won't have been built. PNG support
> alone is sufficient for r.in.png and r.out.png, but the PNG driver
> also requires GD (this dependency has recently been removed in 5.3).

Glynn - thanks for the explanation. I will try to get a new build 
together with GD as soon as I find time.


> [Actually, the PNG driver only uses PNG if GD uses PNG. The GD library
> which is shipped with RedHat 6.2 uses GIF rather than PNG; in that
> situation, you don't need the PNG library, and the PNG driver produces
> GIF images instead of PNG images.]

Richard Greenwood

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