I guess i have been too vague about which plugins i've been concerned with. i mean the ones that are built in with the main app. like the chart downloader, grib etc...
anyway i tracked down the problem to my wxGTK3 pkg. it was compiled on a pre 14.2 current
version of slack. with different glibc, kernel-headers ect... i just rebuilt it and then rebuilt opencpn 4.5.0 and shazam! plugins work!
there is still the problem of opencpn not knowing that it installed the plugin libs to the /user/lib64/opencpn dir so my slackbuild script creates the symlink before making the slackware pkg now.
the reason i don't use src2pkg is that i have my own custom building environment
that creates a repository from built pkgs for use with my own slackware based distribution SlackBuilder. a distribution generator
so to speak.
if your interested you can check it out at http://linuxoutpost.com. the documentation
is incomplete at this time and it is still being developed so there maybe a few bugs here and there.
right now i am working on putting out a slackware based mariners linux
distro. not only with binary pkgs but also complete with a slackbuild repo for use with the slackbuilding tools. slackbuilds.org does not have an OpenCPN slackbuild nor many other navigation
apps so i have to build them from scratch.