If you want to port rxtx to a new platform do the following. This package is developed with freely available tools.
Some unix machines require GNU make .
We will fix them. Porting to new systems with full events will require programming assistance. Its strongly suggested you join the rxtx mail list if you are trying to port to an OS that is not currently working. Windows support is through a custom termios layer which requires more code at this point. BeOS is a mix of termios and classes that requires more code.