[swift-dev] Please remove your Swift build directory

Joe Groff jgroff at apple.com
Tue May 31 12:20:40 CDT 2016

> On May 31, 2016, at 9:37 AM, Dmitri Gribenko via swift-dev <swift-dev at swift.org> wrote:
> Hi,
> We have merged a CMake and build-script refactoring that requires a
> from-scratch build.  Trying to use an existing build directory will
> result in strange errors in the middle of the build.
> Excuse me for the inconvenience.

This seems to have broken Xcode project generation, which in the default configuration now fails with:

	CMake Error at CMakeLists.txt:702 (message):
	  Unknown SDKs:

Probably easy to work around by manually configuring out those SDKs, since Xcode projects don't support cross-building to begin with, but this used to just work.


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