[all-commits] [llvm/llvm-project] 706881: [cmake] Optionally install clang-tblgen to aid cro...

[James Le Cuirot via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 706881825b2470c7176e07355b6ab54d8b4c5f95
      https://github.com/llvm/llvm-project/commit/706881825b2470c7176e07355b6ab54d8b4c5f95
  Author: James Le Cuirot <chewi at gentoo.org>
  Date:   2023-01-12 (Thu, 12 Jan 2023)

  Changed paths:
    M llvm/cmake/modules/TableGen.cmake

  Log Message:
  -----------
  [cmake] Optionally install clang-tblgen to aid cross-compiling

clang-tblgen is required to cross-compile clang itself. Unlike before,
most of the infrastructure is in place to do this now, and the only
thing preventing it is LLVM_BUILD_UTILS, which doesn't apply to Clang.

I thought about changing this to ${project}_BUILD_UTILS and adding
a CLANG_BUILD_UTILS option, but there seems little point for just one tool.

Instead, it checks whether clang-tblgen was explicitly requested in
LLVM_DISTRIBUTION_COMPONENTS, which is good enough for Gentoo and
other distributions.

Closes https://github.com/llvm/llvm-project/issues/20282.

Differential Revision: https://reviews.llvm.org/D141092