Reinstall all ports after Xcode 4.1 -> 4.2 upgrade?

Christoph Deil deil.christoph at
Wed Nov 23 11:27:19 PST 2011

On Nov 23, 2011, at 6:45 PM, Brandon Allbery wrote:

> On Wed, Nov 23, 2011 at 08:36, Christoph Deil <deil.christoph at> wrote:
> I just updated XCode from 4.1 to 4.2 on Lion.
> Do I have to reinstall all ports because the XCode compilers changed?
> No; the APIs and ABIs are still the same.  It's when Apple changes those (as with a new OS release) that you need to forcibly rebuild stuff, because Apple tends to move things around a lot (for example, in Lion a bunch of stuff apparently moved out of libSystem.dylib to other libraries).

Thanks for the info, Brandon.

I've added one sentence to the migration guide to make this clear, I hope that's ok:

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