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Re: Problem with prebinding and Frameworks
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Re: Problem with prebinding and Frameworks


  • Subject: Re: Problem with prebinding and Frameworks
  • From: Julio Bianco <email@hidden>
  • Date: Tue, 9 May 2006 12:06:20 -0300

Hi one more time,
I'm trying to do that you tell me to do, but I have son issues with that.
I create a framework with a basic class that have a float variable, and a method that assign 1.0 to this variable.
I've another framework that uses the first one, and have a variable float and a method that initialize and assign to their variable the first class value (1.0) and increment in one, and I create an application that uses the second and shows the value of this method, and any time we press a button, calls the 2nd frame method, incrementing in one and showing the new value.
When I run it as debug, everything goes right, but when I try to build it as release, I've got the same error I've with the previous configuration (that one that I use calling the framework provided for somebody else). I try to do everything you tell me to do in your previous email, but it doesn't work neither.
I don't know what else to do. Can you guide me a little more?


Thanx
Julio

On May 5, 2006, at 1:34 AM, Sherm Pendley wrote:

On May 4, 2006, at 6:26 PM, Julio Bianco wrote:

/usr/bin/ld: warning can't open dynamic library: @loader_path/../ Frameworks/i1C.framework/Versions/A/i1C referenced from: /Users/ jbianco/BuildProducts/Release/TCFwkEyeOne.framework/TCFwkEyeOne (checking for undefined symbols may be affected) (No such file or directory, errno = 2)

...

		|		'->B.framework\
		|				'-> Versions\
		|						'-> A\
		|							'-> Frameworks\
		|									'-> A.framework\
		|											'-> A

Note that the binary path in the message is TCFwkEyeOne.framework/ TCFwkEyeOne - not Versions/A/TCFwkEyeOne. So @loader_path resolves to TCFwkEyeOne.framework- not Versions/A.


If you want to put A.framework in a version-specific subdirectory, you need to set up a symlink at the expected path in Frameworks/ that points to it. It expects to see it there a compile time, so that it can read the install_path from it that will be used to find it at run time.

	B.framework\
		|->Frameworks\
			A.framework -> ../Versions/A/Frameworks/A.framework

The same kind of symbolic linking is how versioning is done. The files under the .framework directory are just symlinks to the latest version in Versions/. When you're linking a new app, the linker is looking under the top-level .frameworks/ and you get the latest version. But the install_name is used at runtime, and that can bypass the symlinks and point directly to a specific version.

That can help avoid the "dll hell" problem by allowing multiple versions of a bundle to exist at the same time, and the apps that link them to link against the specific version they need.

sherm--

Cocoa programming in Perl: http://camelbones.sourceforge.net
Hire me! My resume: http://www.dot-app.org


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  • Follow-Ups:
    • Re: Problem with prebinding and Frameworks
      • From: Sherm Pendley <email@hidden>
References: 
 >Problem with prebinding and Frameworks (From: Julio Bianco <email@hidden>)
 >Re: Problem with prebinding and Frameworks (From: Sherm Pendley <email@hidden>)
 >Re: Problem with prebinding and Frameworks (From: Julio Bianco <email@hidden>)
 >Re: Problem with prebinding and Frameworks (From: Sherm Pendley <email@hidden>)
 >Re: Problem with prebinding and Frameworks (From: Julio Bianco <email@hidden>)
 >Re: Problem with prebinding and Frameworks (From: Sherm Pendley <email@hidden>)

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