It is possible to compile native Windows Agar libraries using Cygwin. If the agar configuration script detects a Cygwin environment, it will automatically include the -mno-cygwin compiler flag, so the resulting libraries will not depend on Cygwin at all.

1. Run the Cygwin installer, making sure to enable at least the following packages:
   • Devel / gcc-mingw
   • Devel / mingw-runtime
   • Devel / make
   • Devel / libfreetype2 (optional but highly recommended)
   • Graphics / opengl (optional)
   • Graphics / libjpeg-devel (optional, for screenshots)
   • Interpreters / perl (optional, for concurrent builds and release engineering)
2. Download the latest SDL 1.2 release and install: Télechargez et installer la dernière version de SDL 1.2:

     $ tar -xzf SDL-1.2.x.tar.gz
     $ cd SDL-1.2.x
     $ ./configure && make && make install
   

3. At this point, you should be ready to compile and install Agar.