I'm just beginning to get into native plugin rendering in Unity, and I downloaded the [rendering plugin example][1] from the documentation. The built plugin that's already in the project displays properly, but when I try to re-build the plugin by opening the project in Xcode, I get several undeclared identifier errors, including but not limited to:
Use of undeclared identifier 'GL_CULL_FACE'
Use of undeclared identifier 'GL_LIGHTING'
Use of undeclared identifier 'GL_BLEND'
Use of undeclared identifier 'GL_ALPHATEST'
I'm sure it's something simple like linking a different version of OpenGL, but I'm unsure how to proceed since I haven't had a lot of experience with OS X/OpenGL. I'm using Mac OS X 10.10 (Yosemite) and Unity 4.5.4f1.
[1]: http://docs.unity3d.com/Manual/NativePluginInterface.html
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