ld returns an odd error "jack_rack-midi.o: undefined reference to symbol 'pthread_create@@GLIBC_2.2.5' /lib64/libpthread.so.0: error adding symbols: DSO missing from command line" This is on a fully updated 14.2 box. I see no errors in the configure log and all lib paths are ok. I'm not quite sure how to get past this one.