Thai Pangsakulyanont
503814c435
This should make it possible to build StepMania 5 on Mac OS X. The catch is that it will only work with Snow Leopard and up, but I think this is better than nothing. We can support PowerPC / 10.4-10.5 again when someone can make the old Xcode 3 project work.
This demonstrates the use of PNG_USER_CONFIG, pngusr.h and pngusr.dfa The makefile builds a minimal read-only decoder with embedded libpng and zlib. Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC on the make command line. If you prefer to use the shared libraries, go to contrib/pngminus and build the png2pnm application there.