Re: IOUSBUserClient versioning across PPC / Intel

• Subject: Re: IOUSBUserClient versioning across PPC / Intel
• From: Fernando Urbina <email@hidden>
• Date: Mon, 13 Feb 2006 15:20:57 -0800
• Delivered-to: email@hidden
• Delivered-to: email@hidden

--
Fernando Urbina
USB Technology Team
Apple Computer, Inc.

On Feb 13, 2006, at 10:40 AM, William Rector wrote:

Steve I may be wrong,
but I don't believe you need to specify the IOUSBUserClient class, just the IOSUSBFamily
IOUSBUserClient gets loaded later after an app starts talking to your driver...
You should need just this
<key>OSBundleLibraries</key>
<dict>
<key>com.apple.iokit.IOUSBFamily</key>
<string>1.8</string>
</dict>

Bill

On Feb 12, 2006, at 09:17PM, Steve West wrote:

Just use your 10.2.8 dependencies in your plist and everything should
be fine.

This is the result:

Missing dependencies
{
"com.apple.iokit.IOUSBUserClient" =
"A valid compatible version of this dependency cannot be found"
}

Steve

From: Garth Cummings <email@hidden>
Reply-To: <email@hidden>
Date: Fri, 10 Feb 2006 10:27:05 -0800
To: Steve West <email@hidden>
Cc: <email@hidden>
Subject: Re: IOUSBUserClient versioning across PPC / Intel

Hi Steve,

On Feb 10, 2006, at 3:35 AM, Steve West wrote:

I have no difficulty building the universal binary; in my case the ppc
version is built against 10.2.8 and the intel against 10.4u. The problem is
that the ppc and intel dependencies are different, but they share a single
info.plist file. Is there a such a thing as a "fat" plist? Am I missing
something obvious?

No, you're missing something not-so-obvious. :-) But it's a very good
question. A full explanation would require a blow-by-blow account of
how the KEXT loader works.

Just use your 10.2.8 dependencies in your plist and everything should
be fine.

In the rare case where one truly does need a separate set of
dependencies for each architecture, one would have to build two
KEXTs. There isn't a "universal plist" with per-architecture
properties. The two KEXTs would have to have different
CFBundleIdentifiers, and one KEXT could be included in the Plugins
directory of the main KEXT. But again the need to do this should be
quite rare.

Regards,
--gc

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