Hello, I got powder toy to compile on my emac last night running debian 6.0.6 and i thought i would share how to do it:
1. Download the latest source from github (https://codeload.github.com/FacialTurd/The-Powder-Toy/zip/master)
2. go into downloads with terminal and run "unzip The-Powder-Toy-master.zip"
skip compiling python if you have installed (many ppc distros do not come pre- installed and there is no precompiled version in the repositories)
3. type "wget http://www.python.org/ftp/python/2.7.4/Python-2.7.4.tar.bz2"
4. type "tar -xjf Python-2.7.4.tar.bz2"
5. type "sudo apt-get install build-essential libsdl1.2-dev libbz2-dev zlib1g-dev liblua5.1.0-dev fftw3-dev git scons"
5. cd into new python folder and type the following commands:
./configure
make
sudo make install
6. cd into Powder toy folder and type
"scons --lin --release"
7. cd into build folder and type "./powder-legacy
8. Enjoy powder toy on PowerPC linux!
Anyone familiar with Linux could figure that out, plus pretty much the same instructions are in the wiki