We use log4cplus in our company, it provides a complex hierarchical logging system (based on log4j). It seems to have everything you are asking for. It provides many appenders (I personally choose this library for the rolling files linux/windows and linux Syslog).
The library is quite simple to compile and deploy on both linux & windows And do the job no problem so far (about 4 years in production).
Only drawback, the lack of documentation but the code it quite self-explanatory. Good new is you could go to the log4j documentation page to understand how configurators/patterns/etc works ...
