Xcode 4.4 + OSX 10.5 as Development target = Clang LLVM 1.0 error
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Try this on the new Xcode 4.4: create a new project, a Cocoa application, and set the Development Target to OSX 10.5.<br><br>
If you run it, you'll get this error:<br>

    Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1

<br>Can someone explain this? I want to support Leopard too in my projects but I get this error if I try to execute them.