Starting with Aolserver 4.* xotcl can be loaded via
 package require. However, it is recommended to install
 the binaries under the aolserver directory. The
 recommended configuration is:

   ./configure --enable-threads --prefix=/usr/local/aolserver

 Then, you can do a 

   make
   make install

 We provide a small .tcl-file for providing xotcl as a module
 (available in all connection threads) and easing the load of 
 .xotcl files (to be loaded after the xotcl extension). The
 support file can be installed via:

   make install-aol

 Zoran, Gustaf