跨平台的安装（编译）工具，可以用简单的语句来描述所有平台的安装(编译过程)。他能够输出各种各样的makefile或者project文件，能测试编译器所支持的C++特性(A cross platform installation (compilation) tool that can be used to describe the installation of all platforms (compilation) with simple statements. He can output al