non-portable path to file ‘“GL/GL.H“‘； specified path differs in case from file name on disk

non-portable path to file '"GL/GL.H"'; specified path differs in case from file name on disk

non-portable path to file'"GL/GLU.H"'; specified path differs in case from file name on disk

non-portable path to file'"GL/GLAUX.H"'; specified path differs in case from file name on disk

原因：

       和本地路径上的GL/GL.H、GL/GLU.H、GL/GLAUX.H头文件大小写不一致

解决：

       修改成本地匹配的大小写文件名