manpage: add legend for feature flags

misc/manpage

@@ -464,5 +464,42 @@ Edit \fB/etc/nsswitch\.conf\fR to include \fBkadnode\fR in the \fBhosts:\fR line
 .SH "Automatic Port Forwarding"
 If KadNode runs on a computer in a private network, it will try to establish a port forwarding for the DHT port and ports used for announcements\. Port forwarding only works if UPnP/NAT\-PMP is compiled into KadNode (features "natpmp" and "upnp") and it is enabled by the gateway/router\. This is useful to make a local service (e\.g\. a web server) reachable from the Internet without the need to configure port forwardings manually\.
 .
+.SH "Compile Time Features"
+The KadNode version is followed by a list of the features that were compiled in\. E\.g\.:
+.
+.IP "" 4
+.
+.nf
+
+$ kadnode \-v
+kadnode 2\.4\.0 ( bob cmd debug dns lpd nss tls )
+.
+.fi
+.
+.IP "" 0
+.
+.IP "\(bu" 4
+\fBbob\fR: Support for simple public key authentication (secp256r1)\.
+.
+.IP "\(bu" 4
+\fBcmd\fR: Remote command line support (\fBkadnode\-ctl\fR)\.
+.
+.IP "\(bu" 4
+\fBdebug\fR: Enable debug support\. For development only\.
+.
+.IP "\(bu" 4
+\fBdns\fR: KadNode offers a local DNS server interfaces\.
+.
+.IP "\(bu" 4
+\fBlpd\fR: Local Peer Discovery\. Find DHT clients on the local network\.
+.
+.IP "\(bu" 4
+\fBnss\fR: Name Service Switch\. Needed to intercept queries on the system level\.
+.
+.IP "\(bu" 4
+\fBtls\fR: Transport Layer Security support\. Authenticate via HTTPS\.
+.
+.IP "" 0
+.
 .SH "LICENSE"
 MIT/X11

misc/manpage.md

@@ -266,6 +266,23 @@ Port forwarding only works if UPnP/NAT-PMP is compiled into KadNode (features "n
 This is useful to make a local service (e.g. a web server) reachable from the Internet without the need to
 configure port forwardings manually.
 
+## Compile Time Features
+
+The KadNode version is followed by a list of the features that were compiled in. E.g.:
+
+```
+$ kadnode -v
+kadnode 2.4.0 ( bob cmd debug dns lpd nss tls )
+```
+
+  * `bob`: Support for simple public key authentication (secp256r1).
+  * `cmd`: Remote command line support (`kadnode-ctl`).
+  * `debug`: Enable debug support. For development only.
+  * `dns`: KadNode offers a local DNS server interfaces.
+  * `lpd`: Local Peer Discovery. Find DHT clients on the local network.
+  * `nss`: Name Service Switch. Needed to intercept queries on the system level.
+  * `tls`: Transport Layer Security support. Authenticate via HTTPS.
+
 ## LICENSE
 
   MIT/X11