Re: 10.6 SDk and 10.5 Deployment
Re: 10.6 SDk and 10.5 Deployment
- Subject: Re: 10.6 SDk and 10.5 Deployment
- From: Kyle Sluder <email@hidden>
- Date: Thu, 28 Jun 2012 14:19:29 -0700
On Jun 28, 2012, at 1:58 PM, Eric Wing <email@hidden> wrote:
>
> One additional gotcha that I have hit multiple times is that if your
> application links to system .dylibs (not .frameworks), Xcode links to
> the explicit filename versioned .dylib file on your system that the
> generic one is symlinked to. This is a problem if say 10.6 has a newer
> version of libcrypto.dylib or libreadline.dylib which doesn't exist on
> 10.5. Your app will crash on launch on 10.5 because it can't find the
> dependent library. For this, I have resorted to using
> install_name_tool to rewrite the dependencies to link to the generic
> symlinked version because Xcode has fought all my attempts to control
> what it actually links to.
Be careful! There could be binary incompatibilities between the two versions of the dylib—sometimes even between point revisions! We got bit by this in the 10.5->10.6 transition.
--Kyle Sluder
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