[PATCH] D57670: [CMake] Support CMake variables for setting target, sysroot and toolchain

[Louis Dionne via Phabricator via llvm-commits]

ldionne added a comment.

In D57670#1406075 <https://reviews.llvm.org/D57670#1406075>, @arichardson wrote:

> I believe this broke building libunwind standalone for me since it complains about `add_target_flags()` not being defined. I guess it also needs to be copied to the libunwind cmake files?


That looks right. @phosek can you submit a patch?


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