[alsa-devel] alsa-plugins slibtool build failure

Hi I tired to build alsa-plugins on Slackware64-current with slibtool instead of the GNU libtool and received this build failure. Full log - https://pastebin.com/ebjG60wk

With help from #midipix @ freenode which maintains slibtool I found that adding '-pthread' to arcam-av/Makefile.am will allow building alsa-plugins with both libtool and slibtool. Here is a patch that does that, can it be applied to future versions of alsa-plugins? https://pastebin.com/w5T6FkZy

Thanks,Hunter