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Editorial Team
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Asked: 2026-06-07T05:00:03+00:00

I had been working on a cocos2d-x project for the QNX platform and I

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I had been working on a cocos2d-x project for the QNX platform and I am now moving to the iPhone platform to finish developing. I copied all the files over and created a new Xcode4 project and then imported them, but when I go to compile it, I get 40-something errors in the NSObjCRuntime.h.
Then it says: Too many errors emitted, stopping now.
Some of the errors read:
Unknown type name ‘NSString’; did you mean ‘CCString’?
Use of undeclared identifier ‘NSString’; did you mean ‘CCString’?
Use of undeclared identifier ‘Protocol’
Use of undeclared identifier ‘format’; did you mean ‘normal’?
Use of undeclared identifier ‘namestr’

I looked at my Prefix.pch file, after research this seemed to be part of the problem, but everything is wrapped in the #ifdef OBJC … #endif condition so I don’t think that’s the issue. I even tried commenting out the code there and still it gave me the same errors.

How can I fix this?

Thanks!

EDIT: This actually seems to be a problem with the OpenGLES library. When it’s not included and I comment out all gl calls, the errors go away. Any thoughts?
I used this code to load the OpenGLES Library:

#import <OpenGLES/EAGL.h>
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1 Answer

  1. Editorial Team

    I figured it out! It was because in Cocos2d-x 2.0 they’ve changed a lot of the drawing functions from version 1. It’s no longer like regular OpenGLES, you have to use their built in methods to set up OpenGLES.

    See this link: Migrate to v2.0

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