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Re: XCode 4 & copied frameworks
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Re: XCode 4 & copied frameworks


  • Subject: Re: XCode 4 & copied frameworks
  • From: Wade Tregaskis <email@hidden>
  • Date: Mon, 26 Mar 2012 17:42:27 -0700

> I removed the -seg1addr 0x04000000 option as the Frameworks do not need to run on OSX prior to 10.4. The program ran. I assume the need to prebind was only for backward compatibility?

Prebinding has been unnecessary since Tiger.  In fact if memory serves as of Leopard prebinding actually incurs more of a performance penalty than not.

I'm also unsure how a fixed framework load address would work in the presence of modern security features like Address-Space Layout Randomisation.  It's quite possible the flag is ignored completely (or worse, actually still applies and prevents ASLR and other techniques from being applied).

That said there was a gdb bug back in the day which necessitated the use of seg1addr, though it was fixed in gdb years ago and I doubt lldb has the same problem.
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References: 
 >XCode 4 & copied frameworks (From: Patrick Cusack <email@hidden>)
 >Re: XCode 4 & copied frameworks (From: Patrick Cusack <email@hidden>)

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