====== Installing SWI-Prolog (with JPL) on Mac OS X ======
Now that's easy. You have two options:
  * install using [[http://www.macports.org/|MacPorts]], or
  * use the binary installer (which, in turn, is based on MacPorts).

Both options will give exactly the same results.

===== Install SWI-Prolog using MacPorts =====
  * Download and install MacPorts, as described [[http://www.macports.org/install.php|here]].
  * In the terminal, type:

  sudo port install swi-prolog

  * You're done!

===== Install using the binary installer =====
  * Go to the [[http://www.swi-prolog.org/dl-stable.html|SWI-Prolog download page]] and download the appropriate installer for your architecture (Intel, PPC) and Mac OS X version (Tiger, Leopard).
  * Extract the mpkg file and follow the installer instructions.

===== After installing... =====
Both methods install SWI-Prolog in ''/opt/local/'':
  * the binary is in ''/opt/local/bin/swipl'' (add ''/opt/local/bin'' to your PATH if you - or the MacPorts installer - haven't already done so)
  * all the rest is to be found in ''/opt/local/lib/swipl-<version>''

To test if it works:
  * go to ''/opt/local/lib/swipl-<version>/doc/packages/examples/jpl/java/Test''
  * just to make sure: ''rm Test.class''
  * ''./run.sh'' - this should compile Test.java (in the absence of Test.class) and run it.
  * If all goes well, you should get:

  bash-3.2# ./run.sh
  Compiling Test
  
  JPL demo: Test
  
  test 0...% test.pl compiled 0.00 sec, 4,064 bytes
  passed.
  test 1...passed.
  test 2...passed.
  test 3...passed.
  test 4...passed.
  test 5...passed.
  test 6...passed.
  test 7...passed.
  test 8...passed.
  test 9...passed.
  test 10...passed.
  test 11...passed.
  test 101...00004567182904567231901235678312041678321528904567312936890412738905683412794156842736189057340412506823420839420831756240819623751407856239104837562910482956804237195684739158764391584763596579576799passed.