[all-commits] [llvm/llvm-project] cf0d18: runtimes: Pass CMAKE_SYSTEM_NAME based on target t...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/runtimes/only-forward-macos-targets-darwin
  Home:   https://github.com/llvm/llvm-project
  Commit: cf0d18cf8da96251ad41785b5f97a3916220c862
      https://github.com/llvm/llvm-project/commit/cf0d18cf8da96251ad41785b5f97a3916220c862
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-06-12 (Fri, 12 Jun 2026)

  Changed paths:
    M clang/cmake/modules/ClangConfig.cmake.in
    A cmake/Modules/GetTripleCMakeSystemName.cmake
    M llvm/cmake/modules/LLVMConfig.cmake.in
    M llvm/cmake/modules/LLVMExternalProjectUtils.cmake
    M llvm/runtimes/CMakeLists.txt

  Log Message:
  -----------
  runtimes: Pass CMAKE_SYSTEM_NAME based on target triple

Compute the cmake system name from the target triple, rather
than passing through the host's. This is primarily to stop
forwarding OSX specific cmake variables.

This fixes build failures when trying to build gpu libc on mac
hosts. Previously it would fail on several issues, starting with
an unused argument -mmacos-version-min error, followed by other
errors caused by passing -isysroot.

Secondarily, restrict the cmake imported targets when cross compiling.
Without this, the amdgpu build prints many cmake warnings about the
target not supporting shared libraries.

Claude did most of the actual work, though it required quite a few
rounds of prodding to get it into the right place. In particular it
took care of handling all of the cmake platform recognized names from
the triple.

Co-authored-by: Claude Opus 4.6 <noreply at anthropic.com>


  Commit: 0f7ed6ac48bd6934b8be3f1d77500e05b09d39ed
      https://github.com/llvm/llvm-project/commit/0f7ed6ac48bd6934b8be3f1d77500e05b09d39ed
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-06-12 (Fri, 12 Jun 2026)

  Changed paths:
    M cmake/Modules/GetTripleCMakeSystemName.cmake

  Log Message:
  -----------
  Handle mingw


  Commit: e02a9deb15365caf725dbfb78ffff75c221ad88b
      https://github.com/llvm/llvm-project/commit/e02a9deb15365caf725dbfb78ffff75c221ad88b
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-06-12 (Fri, 12 Jun 2026)

  Changed paths:
    M cmake/Modules/GetTripleCMakeSystemName.cmake

  Log Message:
  -----------
  Handle more cases from the chart


  Commit: ba338cf9740e4b3a2a38170d1f108576fd67be63
      https://github.com/llvm/llvm-project/commit/ba338cf9740e4b3a2a38170d1f108576fd67be63
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2026-06-12 (Fri, 12 Jun 2026)

  Changed paths:
    M cmake/Modules/GetTripleCMakeSystemName.cmake

  Log Message:
  -----------
  Match android and cygwin from environment


Compare: https://github.com/llvm/llvm-project/compare/8f6cb73077ab...ba338cf9740e

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