compile problems

[glen]

Does anybody know the meaning of either of these compiler errors
when compiling gimp-1.2.0 on Sparc/Solaris 7?

"/usr/local/include/glib.h", line 1328: va_start: argument mismatch
"Lib.xs", line 346: undefined control

I guess my real question is: Is it possible to get a successful
compile on this platform?  I have been trying since the earliest
developer release.  When/if I get it running it will be the most
expensive software I have ever installed.

Thanks for any suggestions...

Glen Jackson