Two options can be used with GNU make when compiling VR Juggler. They provide the capability to build the library in parallel to take advantage of hardware that can do this effectively. To enable parallel building, specify the -j argument on the command line. With no argument, there is no limit to the number of jobs that are spawned by the build process. An integer argument limits the number of jobs to that value.

The second argument enforces load balancing on the machine while doing a parallel build. To do this, use the -l option with a floating-point value as the load limit. Note that to be allowed to do this, GNU make must be installed setgid on many platforms. When used in combination with the -j option, parallel compiling can be done while not loading the machine down too heavily.