Hi,
/usr/bin/ld: src/Daemon/usbguard_daemon-Daemon.o: undefined reference to symbol 'qb_ipcs_create' //usr/lib/x86_64-linux-gnu/libqb.so.0: error adding symbols: DSO missing from command line I think you need to add the library providing that symbol. Accoding to codesearch.debian.net http://codesearch.debian.net/results/qb_ipcs_create/page_0 the package is libqb. cheers G.

