[PATCH] D56095: [gn build] Add check-clang target and make it work

[Nico Weber via Phabricator via cfe-commits]

thakis created this revision.
thakis added a reviewer: phosek.

With this, check-clang runs and passes all of clang's lit tests. It doesn't run any of its unit tests yet.

Like with check-lld, running just ninja -C out/gn will build all prerequisites needed to run tests, but it won't run the tests (so that the build becomes clean after one build). Running ninja -C out/gn check-clang will build prerequisites if needed and run the tests. The check-clang target never becomes clean and runs tests every time.


https://reviews.llvm.org/D56095

Files:
  llvm/utils/gn/secondary/BUILD.gn
  llvm/utils/gn/secondary/clang/test/BUILD.gn
  llvm/utils/gn/secondary/clang/test/clang_lit_site_cfg_files.gni
  llvm/utils/gn/secondary/llvm/triples.gni
  llvm/utils/gn/secondary/llvm/utils/llvm-lit/BUILD.gn

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