Fix OpenMP linking

Author: Meinersbur

flang-rt/cmake/modules/AddFlangRTOffload.cmake

@@ -60,7 +60,7 @@ macro(enable_cuda_compilation name files)
   endif()
 endmacro()
 
-macro(enable_omp_offload_compilation files)
+macro(enable_omp_offload_compilation name files)
   if (FLANG_RT_EXPERIMENTAL_OFFLOAD_SUPPORT STREQUAL "OpenMP")
     # OpenMP offload build only works with Clang compiler currently.
 
@@ -108,6 +108,7 @@ macro(enable_omp_offload_compilation files)
       set_source_files_properties(${files} PROPERTIES COMPILE_OPTIONS
         "${OMP_COMPILE_OPTIONS}"
         )
+      target_link_options(${name} PUBLIC ${OMP_COMPILE_OPTIONS})
 
       # Enable "declare target" in the source code.
       set_source_files_properties(${files}

flang-rt/lib/flang_rt/CMakeLists.txt

@@ -123,7 +123,7 @@ if (NOT WIN32)
   )
 
   enable_cuda_compilation(flang_rt "${supported_sources}")
-  enable_omp_offload_compilation("${supported_sources}")
+  enable_omp_offload_compilation(flang_rt "${supported_sources}")
 
   # For unittests that depend on flang_rt. Should link to the static version
   # of the library.
@@ -148,7 +148,7 @@ else()
       )
 
     enable_cuda_compilation(${name} "${supported_sources}")
-    enable_omp_offload_compilation("${supported_sources}")
+    enable_omp_offload_compilation(${name} "${supported_sources}")
   endfunction ()
 
   add_win_flangrt_library(STATIC static     MultiThreaded)