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Weak linking 3rd-party frameworks

I searched the archives for weak-linking, but it's almost all on OS compatibility; please inform me if I missed it!

Using 10.3.5, Xcode 1.5.

I have a framework target that I'd like to embed in my apps so my in-house users can DnD them without an installer (using the @executable/../Frameworks install path). My framework and the executable(s) are in different project files.

My custom framework links to a third-party framework (installed in /Library/Frameworks) which is rarely used, but nonetheless necessary for certain applications. I have no control over how that library was built. The -weak_framework linker flag seems like the answer, but it isn't working for me.

The application builds and runs fine on my development machine, but when I bring it over to a clean system, it launches and immediately quits. Console logs a dyld error, saying it can't find the third-party framework in /Library/Frameworks.

I'm guessing the solution is some combination of target switches on either or both of my projects, but there are quite a few combinations...

Thanks for any help!

Laurence
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