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Re: IOUserClient changed since 10.3? Can't load kext on 10.3.9

G'day Andy,

It is possible to build a driver using the 10.3.x macosx and load them on later system. The key to the kernel binary compatibility is the use of the OSMetaClass macros to tell the link loader where to find the vtables that need to be patched at load time.

You are getting a link loader failure so that make sme think that there may be some problem with your OSDeclare... and OSDefine... macros.

Godfrey

On 2008-07-11, at 1:41 , Andy Green wrote:


On Jul 9, 2008, at 2:37 PM, Andy Green wrote:

I've got a kext that loads successfully on 10.4 onwards.
However, it won't load on 10.3.9: kextload reports

*** is not compatible with it's superclass, 12IOUserClient
superclass 
changed?



Message: 3
Date: Wed, 9 Jul 2008 15:51:47 +0400
From: Boris Remizov
Subject: Re: IOUserClient changed since 10.3? Can't load kext on
	10.3.9

Hello,
I think you must build your kext with appropriate SDK (MacOSX 10.3.9
in this case).



Hi Boris,
Thanks for the reply.
I tried that: unfortunately now it won't load on 10.4!
I'd really like a single build of the kext that will load on anything -
surely this is possible? 

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