framework not found OpenGL

I have a project, that uses the OpenGL framework. In order to try to get some other aspect of the project to work, I may have fiddled around the developer libraries (it was more then a week ago so i don't remember exactly what I did).

now when I try to build the project I get "framework not found OpenGL".

I have already uninstall xcode completely: sudo /Developer/Library/uninstal开发者_如何学Pythonl-devtools –mode=all

and reinstalled it, but stil the same error.

Have you added the OpenGL framework to the project. In Xcode with your project open, select "Add to Project... " from the "Project" menu. Use the resulting dialog sheet to find the OpenGL project at

$ /System/Library/Frameworks/OpenGL.framework

A new dialog sheet will allow you to set options, make sure you don't "copy items into destination group's folder".