macports 2.0.4 breaks the usage of clang on Xcode 4.3.2

[Jeremy Lavergne]

> Perhaps MacPorts should consider separate binary repos for 10.4/10.5 and 10.7/10.8. If all
> of the binaries are built on Snow Leopard, this prevents those binary MacPorts packages from
> being built against the fortified 10.7 SDK and linked with -pie so that those executables won't
> leverage ASLR on Lion. This really does represent a security regression introduced by MacPorts
> 2.0.4.

The file URLs contain darwin_X to avoid the issue of cross-contamination, and there are separate buildbots for each OS (Snow Leopard builds Snow Leopard, Lion builds Lion).

I don't understand the issue you're pointing out.

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