The value for versionthread is still bank.
The empty value for "version_thread" is intentional. It indicates that install‑ns.sh should automatically select the correct version for your Tcl installation, as different Tcl versions require different thread libraries.
Edit the nsConfig.sh file
I am not aware of any situation, where there is need to edit the file nsConfig.sh
and re-ran the install-ns.sh and version_thread is still blank.
Regarding editing nsConfig.sh: there is generally no need to modify that file. In fact, install‑ns.sh does not read nsConfig.sh at all. If you want to override default settings, you can specify non-default values directly on the command line [1]. For example, you can run:
version_thread=2.8.9 bash install-ns.sh
However, in your case, the issue likely stems from multiple versions of libthread being installed in /usr/local/ns/lib. OpenACS uses alphabetical sorting to pick the newest version, which means that "libthread2.8.9" comes before "libthread2.8.10" or "libthread2.8.11."
Additionally, there appears to be a thread library for Tcl9 in your listing, but Tcl9 requires unreleased versions of NaviServer and OpenACS and involves numerous migration challenges. There is a long list with required migration activities on the Tcl pages, there was as well a talk from Rolf on the last OpenACS/Tcl conferences on his experiences with porting tcllib). My recommendation: don't use it for now.
To resolve the issue, the simplest approach is to remove the extra thread libraries and then rerun install‑ns.sh:
rm -rf /usr/local/ns/lib/thread*
This should allow install‑ns.sh to detect and use the appropriate thread library version, and OpenACS will pick it up.
All the best
-g
[1] https://github.com/gustafn/install-ns
