More information, and problems: After reading up a bit more in the
darwin
mailing list archives I saw where a couple of years ago there was
a similar
problem whose root cause was that the original project file
emanated from
the old ProjectBuilder application, and there were flags problems.
That's
the case here in that the project file has moved along from
Project builder
through Xcode 1.0, 1.5, and now 2.0. So I decided to create a new
project
file in Xcode 2.0. This was done quickly and easily, and compiled
against
the Current SDK in GCC 4.0. The resultant PCI kext runs fine in
Tiger. I
then tried to target the 10.2.8 SDK. The kext would not build
because it
can't find the "ppc/ansi.h" file, referenced from "machine/ansi.h"
in the
10.2.8 SDK:
#if defined (__ppc__)
#include "ppc/ansi.h"
#elif defined (__i386__)
#include "i386/ansi.h"
#else
#error architecture not supported
#endif
Indeed, this "ppc/ansi.h" file is not on my machine. The same
missing file
problem occurs when I target the 10.3.9 SDK.
So I tried kextload on the kext I built targeting the 10.4 SDK
onto a 10.3.9
system, and I get the original "... is not compatible with its
superclass"
error message.
Still hoping for some clues,
Ron Duritsch
Diagnostic Instruments, Inc.
On 5/19/05 10:03 AM, "Ron Duritsch" <email@hidden> wrote:
I am maintaining a PCI kext for a digital camera that operates on
10.2,
10.3, and now 10.4.1. If I build the kext in Xcode 1.5 it will
load and work
fine on all three operating systems. If, however, I build it on
Xcode 2.0
in Tiger, it will only load and run on Tiger. It will not load at
boot time
on 10.3.9. If I try kextload in Terminal on 10.3.9 I get the
following error
message:
25com_diaginc_iokit_SpotPCI is not compatible with its superclass,
9IOService superclass changed?
kextload: a link/load error occured for kernel extension
/System/Library/Extensions/SpotPCI.kext
load failed for extension /System/Library/Extensions/SpotPCI.kext
I am building against the 10.2.8 SDK. I get the same load error
whether I
compile using GCC 4.0 or 3.3 in Xcode 2.0.
In the Xcode 2.0 release notes "About Xcode Tools", under the
section
entitled "Compatibility of Built Binaries" it reads "IOKit-based
device
drivers built with the GCC 3.3 or GCC 4.0 compilers will run on
Mac OS X
v10.2 (Jaguar), Mac OS X v10.3 (Panther), and Mac OS X v10.4 (Tiger)
systems."
Any clues or hints as to what I need to change to get this to work?
Thanks,
Ron Duritsch
Diagnostic Instruments, Inc.
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