Option --logfile=syslog now works as expected.

README.md

@@ -313,7 +313,7 @@ As {options} you can use:
     --listmeters list all meter drivers
     --listmeters=<search> list all meter drivers containing the text <search>
     --listunits list all unit suffixes that can be used for typing values
-    --logfile=<file> use this file for logging
+    --logfile=<file> use this file for logging or --logfile=syslog
     --logtelegrams log the contents of the telegrams for easy replay
     --logtimestamps=<when> add log timestamps: always never important
     --meterfiles=<dir> store meter readings in dir

src/main.cc

@@ -438,6 +438,11 @@ void setup_log_file(Configuration *config)
     if (config->use_logfile)
     {
         verbose("(wmbusmeters) using log file %s\n", config->logfile.c_str());
+        if (config->logfile == "syslog")
+        {
+            enableSyslog();
+            return;
+        }
         bool ok = enableLogfile(config->logfile, config->daemon);
         if (!ok) {
             if (config->daemon) {

wmbusmeters.1

@@ -73,7 +73,7 @@ Add :verbose to any analyze to get more verbose analyze output.
 
 \fB\--listunits=\fR list all unit suffixes that can be used for typing values
 
-\fB\--logfile=\fR<dir> use this file for logging
+\fB\--logfile=\fR<dir> use this file for logging or --logfile=syslog
 
 \fB\--logtelegrams\fR log the contents of the telegrams for easy replay