[all-commits] [llvm/llvm-project] 6ad1db: [cmake] Forward MacOS sysroot to runtimes when not...

[Tom Eccles via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6ad1db6ff7fc1bd7ce7b88e0df38c0fd9fbbdeea
      https://github.com/llvm/llvm-project/commit/6ad1db6ff7fc1bd7ce7b88e0df38c0fd9fbbdeea
  Author: Tom Eccles <tom.eccles at arm.com>
  Date:   2026-05-07 (Thu, 07 May 2026)

  Changed paths:
    M llvm/runtimes/CMakeLists.txt

  Log Message:
  -----------
  [cmake] Forward MacOS sysroot to runtimes when not crosscompiling (#182501)

The LLVM build documentation says that setting CMAKE_OSX_SYSROOT should
be sufficient to correctly configure the sysroot, however this flag was
not forwarded to the build of runtimes: leading to failures in flang-rt
tests. https://llvm.org/docs/CMake.html#apple-osx

It is not safe to forward this flag in general because the runtime might
be cross-compiled. In this case I have tried to do this only for native
builds. My intention here is not to make the build more complex than
currently documented.



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