re: source build, happy to help. agreed this ought be libdlt3. when making that case you might want to reference debian policy manual 8.1 especially footnote 3:
[qgp](0) $ objdump -p /usr/lib/x86_64-linux-gnu/libdlt.so.3 | sed -n -e's/^[[:space:]]*SONAME[[:space:]]*//p' | LC_ALL=C sed -r -e's/([0-9])\.so\./\1-/; s/\.so(\.|$)//; y/_/-/; s/(.*)/\L&/' libdlt3 [qgp](0) $
