YAY! i got it finally working!
problem was pthsem installed to /usr/local/bin instead of /usr/bin
so i compiled pthsem from git with ./configure --prefix=/usr
then compiled bcusdk from git and it worked!
Possible addresses for KNX USB devices:
device: 1:4:1:0:0 (ALBRECHT JUNG GMBH & CO. KG:KNX-USB Data Interface)