/usr/lib/libots-1.so is insufficiently linked. ldd -r /usr/lib/libots-1.so spits out lots of undefined symbols.
Hmm. Thanks for the catch, Matthias. I think I've found the fix, but a mock will tell me for sure. :)
$ ldd -r /usr/lib64/libots-1.so libglib-2.0.so.0 => /lib64/libglib-2.0.so.0 (0x00002aaaaacc8000) libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x00002aaaaaf66000) libc.so.6 => /lib64/libc.so.6 (0x00002aaaab2a4000) libdl.so.2 => /lib64/libdl.so.2 (0x00002aaaab5f5000) libz.so.1 => /lib64/libz.so.1 (0x00002aaaab7f9000) libm.so.6 => /lib64/libm.so.6 (0x00002aaaaba0d000) /lib64/ld-linux-x86-64.so.2 (0x0000555555554000) Ta-dah! No more unresolved symbols. :) It's fixed in 0.4.2-11, which should hit the next repository push. Thanks for the bug report!