If the plan is to make as little as possible changes on an ancient version of OpenACS, one should fix AOLserver. I think one should be able to compile it with moderate tweaks. Maybe, one has to replace
./util/nsmakeall.tcl by
tclsh ./util/nsmakeall.tcl.
if the plan is to upgrade the instance to some future-safe version (recent versions of Tcl, PostgreSQL, security fixes, etc.), It is recommended to use NaviServer instead of AOLserver. One can get a recent version of OpenACS with NaviServer with [1] compiled on many Unix versions. This install-script gives you at least proper binaries and a config file for OpenACS with NaviServer that can be usually quickly adjusted to local needs.
all the best
-g
[1] https.//openacs.org/xowiki/naviserver-openacs
