A very flexible way to compile FreeSG natively under Windows is using MSYS. Note that MSYS only supports the configure script and the build system, the compiled libraries are completely native and independent.

1. First install the base MinGW components. To faciliate this task, you can download the Automated MinGW Installer from this page.
2. Get the MSYS installer from the MinGW download area, and proceed with the installation. You will probably want to install the gdb package as well if you are going to be developing applications.
3. If you are using Windows x64, as of MSYS-1.0.10, the following fix is required otherwise the MSYS shell will not start!
4. FreeSG depends on the Agar library. Follow the steps described in the Agar installation guide.
5. At this point, you should be ready to compile and install FreeSG:

     $ tar -xzf freesg-*.tar.gz
     $ cd freesg-*
     $ ./configure && make && make install
   

6. Various demos are available from the ./demos directory and can be compiled in the same way.