How to configure syslog so that an applications log goes to a specific file

Question

I have an application myapp which should send log files only to /var/log/myapp.log. myapp is written in C++. The following sample

Answer 1

According to the syslog(3) manpage, the first parameter for openlog() sets a prefix for log messages, not a filename. You can use a facility like LOG_LOCAL0 to flag your output and then configure syslogd using /etc/syslog.conf to send those logs to the file of your desire.