+ (Class)layerClass won't work

问题

I'm building an OpenGL application and on eaglview.m + (Class)layerClass wont work.

If i try to run it I get:

"Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_CAEAGLLayer", referenced from:
      objc-class-ref in GLView.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status"

How can I fix this?

回答1:

You need to add the OpenGL and potentially the QuartzCore frameworks to the target to link them.

来源：https://stackoverflow.com/questions/6251111/classlayerclass-wont-work