Build and ship OpenMP with LLVM releases

[luporl]

Fixes #135021

Suggested-by: Kawashima Takahiro [email protected]

[llvmbot]

@llvm/pr-subscribers-clang

Author: Leandro Lupori (luporl)

Changes

Fixes #135021

Suggested-by: Kawashima Takahiro <[email protected]>

---

Full diff: https://github.com/llvm/llvm-project/pull/160581.diff

1 Files Affected:

• (modified) clang/cmake/caches/Release.cmake (+1-1)

diff --git a/clang/cmake/caches/Release.cmake b/clang/cmake/caches/Release.cmake
index a523cc561b3f9..af8e341ab5f07 100644
--- a/clang/cmake/caches/Release.cmake
+++ b/clang/cmake/caches/Release.cmake
@@ -36,7 +36,7 @@ if (${CMAKE_HOST_SYSTEM_NAME} MATCHES "Linux")
   list(APPEND DEFAULT_PROJECTS "bolt")
 endif()
 
-set (DEFAULT_RUNTIMES "compiler-rt;libcxx")
+set (DEFAULT_RUNTIMES "compiler-rt;libcxx;openmp;flang-rt")
 if (NOT WIN32)
   list(APPEND DEFAULT_RUNTIMES "libcxxabi" "libunwind")
 endif()

[luporl]

About the test failures:

• Flang :: Lower/location.f90
  • was already failing in release builds (workflows/release-binaries: Disable flang on Darwin #164667)
• LLVM :: Object/ar-create.test
• LLVM :: Object/archive-extract-dir.test
• LLVM :: tools/llvm-ar/mri-addlib.test
• LLVM :: tools/llvm-ar/mri-errors.test
• LLVM :: tools/llvm-ar/print.test
  • Caused by [ShrinkWrap] Modify shrink wrapping to accommodate functions terminated by no-return blocks #167548, which was reverted
• libarcher :: races/critical-unrelated.c
• libarcher :: races/lock-nested-unrelated.c
• libarcher :: races/lock-unrelated.c
• libarcher :: races/parallel-simple.c
• libarcher :: races/task-dependency.c
• libarcher :: races/task-taskgroup-unrelated.c
• libarcher :: races/task-taskwait-nested.c
• libarcher :: races/task-two.c
• libarcher :: races/taskwait-depend.c
• libarcher :: task/task_late_fulfill.c
  • The CI machine doesn't have llvm-symbolizer available in PATH, so addr2line is used instead, but the Ubuntu 22.04 version doesn't support the DWARF used in the test program:
    • addr2line: DWARF error: invalid or unhandled FORM value: 0x23
  • Possible fixes:
    • Make llvm-symbolizer available in PATH
    • Upgrade to Ubuntu 24.04
    • Modify the tests to use DWARF 3 instead of 4

The macOS builder fails to build the sanitizer tests:

ld: warning: ignoring duplicate libraries: '-lc++'
Undefined symbols for architecture arm64:
  "std::__1::__hash_memory(void const*, unsigned long)", referenced from:
  ...

It seems some object files were compiled for LLVM 22 (git) but when linking the system libc++ is used, which doesn't have std::__hash_memory, introduced in LLVM 21 IIRC.
This failure doesn't appear to be related to this PR.