[all-commits] [llvm/llvm-project] 51a292: [gn build] Switch copy_bundle_data from pax to cpio

[Nico Weber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 51a292d994535d14af1873f09534a352da1d5456
      https://github.com/llvm/llvm-project/commit/51a292d994535d14af1873f09534a352da1d5456
  Author: Nico Weber <thakis at chromium.org>
  Date:   2020-12-30 (Wed, 30 Dec 2020)

  Changed paths:
    M llvm/utils/gn/build/toolchain/BUILD.gn

  Log Message:
  -----------
  [gn build] Switch copy_bundle_data from pax to cpio

This will hopefully fix the build not becoming clean when using Ninja
1.9+. Ninja 1.9 enabled high-resolution time stamps, but pax doesn't
correctly set high-resolution timestamps on its output.

See https://github.com/nico/hack/blob/master/notes/copydir.md for a
detailed writeup of problem and alternatives.