Created attachment 3997 Fix underlinking by refactoring libraries to LIBADD in Makefile.am libraries with libtool and automake should be passed from LIBADD instead of LDFLAGS so the linking order is correct. the problem is visible with the GNU gold linker, or with the GNU old-style linker using -Wl,--as-needed attached patch fixes the obvious mistake
Fixed in: https://git.xfce.org/thunar-plugins/thunar-media-tags-plugin/commit/?id=96d1421f9e0c140b77cc982a5a68c84fbf7d927c