Errors in Compiling / Configure

Guys,
   I'm having this problem running configure on a sparc solaris 8
server. Any ideas on this error ?
Snipp
---------------------------
stringinfo.c: In function `appendStringInfo':
stringinfo.c:104: `va_list' undeclared (first use in this function)
stringinfo.c:104: (Each undeclared identifier is reported only once
stringinfo.c:104: for each function it appears in.)
stringinfo.c:104: parse error before `args'
stringinfo.c:121: warning: implicit declaration of function `va_start'
stringinfo.c:121: `args' undeclared (first use in this function)
stringinfo.c:124: warning: implicit declaration of function `va_end'
gmake[1]: *** [stringinfo.o] Error 1
gmake[1]: Leaving directory
`/export/home/root/postgresql-7.0.2/src/backend/lib'
gmake: *** [lib.dir] Error 2

--
Scott D. Pham
919-484-7222 x223
Unix Administrator
spham@incellico.com
www.incellico.com