KitCreator @ http://kitcreator.rkeene.org/kitcreator mentions RHEL 5 explicitly, but can deftly build working Tclkits for Debian and Debian derivatives (Ubuntu, Mint, Slax)
Here are a few suggestions that may help.
"KitCreator Version" -> "Fossil Trunk Tip"
"Tcl Version" -> Choose the latest numbered release, e.g. 8.6.8
"Platform" -> Select "Linux/amd64" if in doubt
If you want to include tclTLS for encrypted communication, check the following
"Package TLS"
"TLS: Statically link to LibSSL"
"TLS: Build LibreSSL for this platform"
Works a treat!