[LAU] Calf ladspa status?

Hi list, It seems that the latest (packaged see below) ladspa version of the Calf plugins is not working with the main applications I use which still use ladspa: Rosegarden, jack-rack and Ardour. The former two provide some clues about errors happening when trying to load calf.so (which is a symbolic link in /usr/lib64/ladspa/calf.so pointing to /usr/lib64/calf/calf.so). Ardour seems to silently "ignore" all of the ladspa versions of Calf (but I may be missing error messages/clues...). I am on Fedora 24 and the distribution does provide a ladspa-calf-plugins package to which I already filed a bug report. Interestingly if I use the calf.so file compiled with the latest git version of LMMS [1] (where the provided version of Calf seems to date back at least 8 month, but even 2 or 3 years for most source files) the plug ins are visible and usable. Any info would be interesting, and *maybe* someone is also using ladspa (for me this especially relevant for existing versions of files I have using these plugins) Side note... Plugin "binary-dependency" in the light of longer term archiving is probably an unsolvable problem whichever the format :) Lorenzo. [1] https://github.com/LMMS/lmms/tree/master/plugins/LadspaEffect/calf