title: Configuring log4cpp Logging level Priority
body: <p>In an application we are using log4cpp-0.3.5rc3 for logging. The application is installed on linux devices. There is a bug in application and I want to set the log level of application to debug but I don't find anyway to do it on the remote device. 
  In the application configuration I couldn't find anything about log level just this line: </p>
  
  <pre><code>log4cpp_include_dir_default=${system_lib_dir}/log4cpp/log4cpp-0.3.5rc3/include
  log4cpp_include_dir=${log4cpp_include_dir_default}
  
  AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [have GCC compile with symbols (default = no)]), enable_debug=$enableval, enable_debug=no)
  </code></pre>
  
  <p>Is it so that I have to build application with debug configuration and install a new build for setting Log level to debug? I wonder if log4cpp has any configuration file for logging like log4j in Java where we can easily change the log level. </p>