Tcl_NREvalObj Error

[verbomania]

Hi

Is there a minimum requirement of TCL8.6 for rl_json? I'm testing it in TCL8.5 and when I issue package require rl_json, I'm getting /lib/rl_json0.9.11/librl_json0.9.11.so: undefined symbol: Tcl_NREvalObj

Thanks

Steve

[cyanogilvie]

Yes, rl_json requires 8.6 - it uses the Non-Recursive Engine: http://wiki.tcl.tk/37253 which is only in 8.6.

With enough effort it might be possible to get it working on 8.5, but I don't have any reason to do it - I've been using 8.6 for almost a decade now. If you wanted to have a go at it, you'd be best off starting from e844a95^ (just before the NRE conversion). It wouldn't be able to be merged back upstream, but you could maintain an 8.5-compatible fork if you wanted to.

[verbomania]

Thanks for getting back to me. The reasons for being stuck on 8.5 on this particular server are long and complicated and involve some substantial legacy code. I'm actually using the pre-8.6, version 0.9.7 which works absolutely fine for this purpose.