[all-commits] [llvm/llvm-project] 96d1ba: [Flang] Remove FLANG_INCLUDE_RUNTIME (#124126)

[Michael Kruse via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 96d1baedefc3581b53bc4389bb171760bec6f191
      https://github.com/llvm/llvm-project/commit/96d1baedefc3581b53bc4389bb171760bec6f191
  Author: Michael Kruse <llvm-project at meinersbur.de>
  Date:   2025-03-26 (Wed, 26 Mar 2025)

  Changed paths:
    M flang-rt/README.md
    M flang/CMakeLists.txt
    R flang/cmake/modules/AddFlangOffloadRuntime.cmake
    M flang/examples/CMakeLists.txt
    R flang/examples/ExternalHelloWorld/CMakeLists.txt
    R flang/runtime/CMakeLists.txt
    R flang/runtime/CUDA/CMakeLists.txt
    R flang/runtime/Float128Math/CMakeLists.txt
    M flang/test/CMakeLists.txt
    M flang/test/lit.cfg.py
    M flang/test/lit.site.cfg.py.in
    M flang/tools/f18/CMakeLists.txt
    M flang/unittests/CMakeLists.txt
    M flang/unittests/Evaluate/CMakeLists.txt
    R flang/unittests/Runtime/CMakeLists.txt
    R flang/unittests/Runtime/CUDA/CMakeLists.txt
    M llvm/CMakeLists.txt

  Log Message:
  -----------
  [Flang] Remove FLANG_INCLUDE_RUNTIME (#124126)

Remove the FLANG_INCLUDE_RUNTIME option which was replaced by
LLVM_ENABLE_RUNTIMES=flang-rt.

The FLANG_INCLUDE_RUNTIME option was added in #122336 which disables the
non-runtimes build instructions for the Flang runtime so they do not
conflict with the LLVM_ENABLE_RUNTIMES=flang-rt option added in #110217.
In order to not maintain multiple build instructions for the same thing,
this PR completely removes the old build instructions (effectively
forcing FLANG_INCLUDE_RUNTIME=OFF).

As per discussion in
https://discourse.llvm.org/t/buildbot-changes-with-llvm-enable-runtimes-flang-rt/83571/2
we now implicitly add LLVM_ENABLE_RUNTIMES=flang-rt whenever Flang is
compiled in a bootstrapping (non-standalone) build. Because it is
possible to build Flang-RT separately, this behavior can be disabled
using `-DFLANG_ENABLE_FLANG_RT=OFF`. Also see the discussion an
implicitly adding runtimes/projects in #123964.



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