INSTALL

Follow the steps below to build pngquant from source on Linux or UNIX systems
(including Mac OS X):

1. Download the libpng source code from:
   http://www.libpng.org/pub/png/libpng.html - e.g.:

      $ cd ..
      $ wget http://prdownloads.sourceforge.net/libpng/libpng-1.2.40.tar.gz?download

   Unpack it into the parent directory of the 'pngquant' directory and rename
   it to 'libpng' - e.g.:

      $ tar zxf libpng-1.2.40.tar.gz
      $ mv libpng-1.2.40 libpng

   Build libpng:

      $ cd libpng
      $ ./configure && make libpng.a

2. Download the zlib source code from:
   http://www.zlib.net/

      $ cd ..
      $ wget http://prdownloads.sourceforge.net/libpng/zlib-1.2.3.tar.gz?download

   Unpack it into the parent directory of the 'pngquant' directory and rename
   it to 'zlib' - e.g.:

      $ tar zxf zlib-1.2.3.tar.gz
      $ mv zlib-1.2.3 zlib

   Build it:

      $ make

3. Go back to the pngquant directory and make using the Makefile.unx make file:

      $ cd ../pngquant/
      $ make -f Makefile.unx

That's it, you should now have a 'pngquant' executable in the current directory.