Windsoul is an open source 3d engine.

cd c:\project
git clone git://github.com/cloudwu/windsoul.git windsoul
export WINDSOUL=c:/project/ws
cd c:\project\windsoul
make

NOTICE : WINDSOUL should not be an existed path , because 'make clean' will remove this directory. And 'make' will create this directory automatic.