Since the Mac OS X installation was slightly non-trivial, I think it’s useful to note it down here.
This assumes that you are using Ruby from MacPorts (née Darwin Ports).
First, install some library dependencies:
sudo port install libpng zlib libungif
If you get an error like ‘Another version of blah is already active’, don’t worry: just remove it from the install line above and try again.
Download version 0.3.0 of the Ming library and extract it.
cd ming-0.3.0/ ./configure "LDFLAGS=-L/opt/local/include -L/opt/local/lib" \ "CPPFLAGS=-I/opt/local/include -I/opt/local/lib" \ "CFLAGS=-I/opt/local/include -I/opt/local/lib" make sudo make install
Get Ming/Ruby 0.1.8 and extract it.
cd ming-ruby-0.1.8/ sudo ruby setup.rb
If all that worked, you can try a ‘Hello World’ example. The best source for documentation is at the delightfully-named Ming the Manual, although you’ll have to use your initiative to translate the method calls into Ruby (hint: change methodsLikeThis to methods_like_this).