[PATCH] D77496: Make paths in generated llvm-lit relative as well.

[Nico Weber via Phabricator via llvm-commits]

thakis created this revision.
thakis added a reviewer: hans.
Herald added a subscriber: mgorny.

This builds on top of D77184 <https://reviews.llvm.org/D77184>. With this, I can rename my build directory
to a different name and `bin/llvm-lit ../llvm-project/clang/test ../llvm-project/llvm/test`
(mostly) still succeeds.

I haven't tried copying the build dir to a different machine to run tests there yet,
but I tried something like it a few months ago and it worked back then.

Changes:

- Make configure_lit_site_cfg() store the main / generated config pair interleaved in the LLVM_LIT_CONFIG_FILES list and postpone converting it to python code to llvm-lit's CMakeList.
- Pull the relpath code into a new function make_paths_relative() and call that in llvm-lit's CMakeList, prior to converting the list to python code.
- Pull the path() function into a variable and use that in llvm-lit's CMakeList too.


https://reviews.llvm.org/D77496

Files:
  llvm/cmake/modules/AddLLVM.cmake
  llvm/utils/llvm-lit/CMakeLists.txt

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