[Unity] Use of undeclared identifier 'GL_RGBA8_OES' in xcode 6

I'm having a similar issue with my Unity project not compiling with the Xcode 6 and the iOS 8 SDK. Xcode 6 gives me five errors, all in the GlesHelper.mm file (which, if I'm not mistaken, is part of Unity). All five are semantic issues:

• Line 63: Use of undeclared identifier 'GL_RGBA8_OES'
• Line 123: Use of undeclared identifier 'glRenderbufferStorageMultisampleAPPLE'; did you mean 'glRenderbufferStorageMultisample'?
• Line 133: Use of undeclared identifier 'GL_DEPTH_COMPONENT24_OES'
• Line 135: Use of undeclared identifier 'GL_DEPTH24_STENCIL8_OES'
• Line 143: Use of undeclared identifier 'glRenderbufferStorageMultisampleAPPLE'; did you mean 'glRenderbufferStorageMultisample'?

Answer:

Please add

#include <OpenGLES/ES2/glext.h>