Nagios requires libtool (libltdl.so) to run.
Steps to Reproduce:
1. Install net-analyzer/nagios from binhost
2. Start nagios
nagios: error while loading shared libraries: libltdl.so.7: cannot open shared object file: No such file or directory
Nagios launch without errors.
Confirmed, needed at both build and runtime.
Updating assignee/CC per metadata.xml.
This is fixed in the latest nagios-4.x that I've just committed, thanks for the report!