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Nico Weber f4821b445c Make paths in generated llvm-lit relative as well.
This builds on top of 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` 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.

Differential Revision: https://reviews.llvm.org/D77496
2020-04-06 09:18:23 -04:00
..

See docs/CMake.html for instructions on how to build LLVM with CMake.