apacheGH-41061: [C++] Ignore ARROW_USE_MOLD/ARROW_USE_LLD with clang …

…< 12 (apache#41062) ### Rationale for this change `--ld-path` is available since clang 12 or later. ### What changes are included in this PR? Ignore `ARROW_USE_MOLD`/`ARROW_USE_LLD` with clang < 12. ### Are these changes tested? Yes. ### Are there any user-facing changes? Yes. * GitHub Issue: apache#41061 Authored-by: Sutou Kouhei <[email protected]> Signed-off-by: Sutou Kouhei <[email protected]>
tmct · May 4, 2024 · 19bfeb5 · 19bfeb5
1 parent 3dc8e8b
commit 19bfeb5
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/cpp/cmake_modules/SetupCxxFlags.cmake b/cpp/cmake_modules/SetupCxxFlags.cmake
@@ -679,7 +679,12 @@ if(ARROW_USE_LLD)
         )
       endif()
     elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-      set(LLD_LINKER_FLAGS "--ld-path=${LD_LLD}")
+      if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "12.0.0")
+        set(LLD_LINKER_FLAGS "--ld-path=${LD_LLD}")
+      else()
+        message(STATUS "Need clang 12.0.0 or later to use LLD linker: ${CMAKE_CXX_COMPILER_VERSION}"
+        )
+      endif()
     else()
       message(STATUS "Using the default linker because compiler doesn't support LLD: ${CMAKE_CXX_COMPILER_ID}"
       )