JDiveLog

• Download the source-package (tested with http://rxtx.qbang.org/pub/rxtx/rxtx-2.1-7-r2.zip) and unpack the archive (e.g. to your desktop or home directory).
• Go to the (MACOSX_IDE/ForPackageMaker folder), try to install RXTX binaries using the Installer by double clicking on MACOSX_IDE/ForPackageMaker/RXTX_Tiger.pkg
• check existence of the folder “/var/spool/uucp”, if you don’t have it create it with command

  sudo mkdir /var/spool/uucp

  Permissions should be: drwxrwxr-x, if they are not do command

  sudo chmod 775 /var/spool/uucp

• YOU (and everyone using the serialport/lib should be a member of the uucp group, you can check it with command

  niutil -readprop / /groups/uucp users

  You should see your name in output of the niutil command. If you don’t see it, do following:

  sudo niutil -appendprop / /groups/uucp users <yourname>

  Substitute <yourname> with your user’s name

NOTES: RXTX.pkg should create uucp folder and insert your name in uucp group automatically but you might want to repeat those steps for other users. If everything went without errors, you should be done now. Remember that changing group memberships of users might need a reboot, so please consider doing so.

• cd <where you unpacked it>/rxtx-2.1-7-bins-r2/
  
  sudo cp RXTXcomm.jar /Library/Java/Extensions
  
  sudo cp Mac_OS_X/librxtxSerial.jnilib /Library/Java/Extensions

• In order to being actually able to access the serial port as a normal user, you have to be a member of the uucp-Group (otherwise you’ll get an Error: “Port already in use”), which can be accomplished by running

  fixperm.sh

  Which can be found in the /contrib folder of the rxtx SOURCE package subdirectory.