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Re: unknown required load command 0x80000022
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Re: unknown required load command 0x80000022


  • Subject: Re: unknown required load command 0x80000022
  • From: Kevin Brock <email@hidden>
  • Date: Mon, 26 Oct 2009 13:11:59 -0700

Peter O'Gorman wrote:
On 10/26/2009 02:07 PM, Kevin Brock wrote:

I haven't seen any information on how to make Xcode *not* include these
load commands...

It's the compressed linkedit segment - see http://developer.apple.com/mac/library/releasenotes/DeveloperTools/RN-dyld/index.html

Properly setting the deployment target is the solution.
It may help Mr. Limberg's problem.  It's not the solution to all the problems introduced by the LC_DYLD* commands.

If I build a framework for deployment target OS X 10.5, LC_DYLD_INFO gets included.  This isn't understood by some build tools on 10.5.  In particular, strip doesn't understand it, so if the framework is copied anywhere by the project things break. (strip during copy is the default setting).

So setting the deployment target properly isn't really enough.  If I build a framework on 10.6 with default settings for deployment target 10.5, I can't go to a 10.5 system and link a project with it unless I alter the defaults...  It will load on 10.5, but can't be used as part of another project in some cases. 

Performing deployment post-processing on the framework helps, but that isn't the default, even in a release build.

The loader release notes you point at talk about the fact that the new load command is going to be included, but don't address the build issues it introduces where people still need to do some builds on 10.5.


Kevin




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  • Follow-Ups:
    • Re: unknown required load command 0x80000022
      • From: Grant Limberg <email@hidden>
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      • From: Peter O'Gorman <email@hidden>
References: 
 >unknown required load command 0x80000022 (From: Grant Limberg <email@hidden>)
 >Re: unknown required load command 0x80000022 (From: Kevin Brock <email@hidden>)
 >Re: unknown required load command 0x80000022 (From: Peter O'Gorman <email@hidden>)

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