[Zope] Zope for Solaris 2.5.1

Hello: I'm trying to install zope on a Solaris 2.5.1 Sparc machine, from source code. I installed Python 2.1.1 for that machine, but when executing the installation script (w_pcgi.py) it ends with an error: cannot load libgcc_s.so.1 I'm using gcc 2.95.3, but, maybe I should use gcc 3.0 to avoid this problem? I'm desperate, as I need Zope running soon, but I can't solve this problem. Any ideas? Thanks, Gregorio.