problems with configure

I'm trying to compile the CVS (fresh download) of postgres and I get this 
running the configure script:

checking for tzname... yes
checking for union semun... no
checking for struct sockaddr_un... yes
checking for int timezone... yes
checking types of arguments for accept()... configure: error: could not 
determine argument types 

My configure options are these:

./configure --prefix=/usr/local/pgsql/ --cache-file=config.cache 
--enable-locale --enable-uniconv  --with-maxbackends=128 --without-tk 
--with-openssl=/usr/local/ssl/ --enable-syslog

and I'm running a Solaris 7 with gcc 2.95.2.

Any ideas?

-- 
"And I'm happy, because you make me feel good, about me." - Melvin Udall
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Martín Marqués            email:     martin@math.unl.edu.ar
Santa Fe - Argentina        http://math.unl.edu.ar/~martin/
Administrador de sistemas en math.unl.edu.ar
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