Add support for building and testing the unwinder.

Note: The unwinder currently only works on Darwin and on ARM Linux.
Non-ARM Linux support is not yet implemented, and will fail to build.

llvm-svn: 212824
GitOrigin-RevId: 7c06819ecdce83d1375b754183c90b7f4e4b8a8a
6 files changed
tree: 328f18f186982559e511b0562a9fd42093d8eef1
  1. cmake/
  2. include/
  3. lib/
  4. src/
  5. test/
  6. www/
  7. CMakeLists.txt
  8. CREDITS.TXT
  9. LICENSE.TXT