GrADS producing incorrect images

[Jonathan Voss]

We are currently trying to compile GrADS for weather work on a Sun
Microsystems Ultra60 running Gentoo Linux. The current version (1.9b4)
compiles without issue using Len Makin's source modification (dated Wed, 26
Oct 2005 found on LISTSERV) to make the gdCompareInt function work within
gxhpng.c. Before using his fix we did experience a failed make with
undefined references to gdCompareInt().

However, now that the source compiles this is only half of the problem we
are currently experiencing. When using GrADS, we get images that are all red
or various other anomalies produced by gradsc. We have confirmed that the
data is good by testing it on other servers (using x86 binaries) that we
were graciously allowed access to for testing. Obviously we must compile
through source as no linux binaries for sparc64 are available.

The images currently produced incorrectly can be seen here:
http://sirius.onvox.net/grads-temp/APCP1_sfc_290306.png
Or others in the same directory: http://sirius.onvox.net/grads-temp/

Does anyone know what might cause these issues? I've tried looking through
LISTSERV to no avail and other sources as well.

Thanks,
Jonathan Voss
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