As not all debian series support systemd, for example Ubuntu 14.04.x, make debs failed with following error, because it always tries to install systemd stuff.

dh_install -p lustre-client-utils
dh_install: lustre-client-utils missing files (debian/tmp/lib/systemd/system/*), aborting
make[1]: *** [binary-lustre-client-utils] Error 2
make[1]: Leaving directory `/root/lustre'
dpkg-buildpackage: error: debian/rules binary gave error exit status 2
make: *** [debs] Error 2