OK - I got the install to work. Had to install GNU C and C++.
Now I have FreeTDS working through DBD:Sybase, except that I get the following error/warning each time it runs:
cs_config(CS_LOC_PROP) failed at /usr/lib/perl/5.8/DynaLoader.pm line 245.
I've read that it's a warning and I can ignore it - but does anyone know how to just turn it off or get it to not show???