This guide is for compiling TPT on OS X. it should work on all OS X versions but may have some problems on Mavericks.

If there are problems, try posting your errors on the development help section of the forums, or coming onto irc.

1. Download Xcode from the App Store. If you are on OS X 10.7 you will have to register a developer account and download 4.6.3 here.

2. Install and open Xcode. Go to Xcode -> Preferences and click on Downloads. Install "Command Line Tools"

3. Now, download scons and unzip it. Go into the terminal, and type in cd ~/Downloads/scons-2.3.0/ (you can use tab to complete a folder name so you don't have to type it all out). Next type sudo python setup.py install. The terminal will ask you for your password. Note that you can not see your password while you are typing it in. You now have scons installed. Keep the terminal open for later.

4. Download the SDL framework. Open it and copy SDL.Framework to /Libraries/Frameworks/

5. Next we need to get Lua. There are 3 options:

5a. If you have MacHomeBrew installed, install lua by typing brew install lua. You now have the Lua framework installed.

5b. Download the lua source. Double click to extract it, then go back to the terminal and type cd ../lua-5.1.5/. Once in the lua folder, type make macosx and then sudo make install. The lua library is now installed.

5c. TPT can be compiled without lua at all, just add in the --nolua flag to scons.

6. Now we need to get fftw, which is used to speed up Newtonian Gravity calculations. There are 2 options:

6a. Download the fftw3 source. Double click to extract it, then go back to the terminal and type cd ../fftw-3.3.4/. Once in the fftw folder, type ./configure && make . Some different options may be needed to make it compile (I used a lot) but maybe this works.

6b TPT can be compiled without fftw at all, just add the --nofft flag to scons.

7. Now we need to get the actual source. Installing "Command Line Tools" should have installed git, so go somewhere you want to put the code (cd ~/Documents/) and type git clone https://github.com/simtr/The-Powder-Toy.git. After this cd into the source directory with cd The-Powder-Toy/

8. Next type this into Terminal: scons --macosx --release --sse2. It will start compiling. Add the --nolua or --nofft options if you chose not to compile those libraryes.

If it compiled without errors, you will find a file called powder-x in the build folder. Double click it and run it. Congrats, you have compiled spare code and have made a OS X application.

This was written by Candunc, rewritten by jmeyer2k, and fixed again by jacob1; although parts were copied from the Mac OS X compile page. Thanks to the editors on the Mac OS X compile page, and thanks to people at Mac Rumors and Ximon to help me find out various errors.

I hope this helps future users become Mac Compilers and push TPT to Mac users!