compiz / freewins安裝 - Linux

先
git clone git://anongit.compiz-fusion.org/compiz/core

可是接下來
cmake ../core/plugins/freewins/

Could not find module FindCompiz.cmake or a configuration file for package
Compiz.

Adjust CMAKE_MODULE_PATH to find FindCompiz.cmake or set Compiz_DIR to the
directory containing a CMake configuration file for Compiz. The file will
have one of the following names:
.............

要怎麼set Compiz_DIR呢？
沒有用過build system, 可能問了一個很簡單的問題XD

謝謝！
(然後站外的就讓我多發一篇吧 不好意思～
--