fix cray clang OpenMP linker issues

CMake is not setting the linker flag `-fopenmp` for the cray clang compiler.
psychocoderHPC · Sep 23, 2024 · 3cacd23 · 3cacd23
1 parent 128d446
commit 3cacd23
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/cmake/alpakaCommon.cmake b/cmake/alpakaCommon.cmake
@@ -357,6 +357,12 @@ if(alpaka_ACC_CPU_B_OMP2_T_SEQ_ENABLE OR alpaka_ACC_CPU_B_SEQ_T_OMP2_ENABLE)
     else()
         find_package(OpenMP REQUIRED COMPONENTS CXX)
         target_link_libraries(alpaka INTERFACE OpenMP::OpenMP_CXX)
+        # shown with CMake 3.29 and cray clang 17
+        # workaround: cmake is missing to add '-fopenmp' to the linker flags
+        if(CMAKE_CXX_COMPILER_ID STREQUAL "CrayClang")
+            target_link_libraries(alpaka INTERFACE -fopenmp)
+        endif()
+        find_package(OpenMP COMPONENTS CXX)
     endif()
 endif()