Handle OpenMP libraries in portable way (issue #959)

Author: dbabokin

cmake/modules/xsmm-dnn.cmake

@@ -46,6 +46,6 @@ target_include_directories(xsmm_dnn_mlp PRIVATE ${XSMM_DNN_INCLUDE_DIRS})
 target_link_libraries(xsmm_dnn_mlp PRIVATE xsmm)
 if (OPENMP_FOUND)
   target_compile_options(xsmm_dnn_mlp PRIVATE ${OpenMP_C_FLAGS})
-  target_link_libraries(xsmm_dnn_mlp PRIVATE omp)
+  target_link_libraries(xsmm_dnn_mlp PRIVATE OpenMP::OpenMP_C)
 endif()
 install(TARGETS xsmm_dnn_mlp RUNTIME DESTINATION bin)

tools/tpp-run/CMakeLists.txt

@@ -9,10 +9,6 @@ if(USE_OneDNN)
   set(ONEDNN_LIBS_INCL "-ltpp_dnnl_runner_utils")
 endif()
 
-if(USE_OpenMP)
-  set(OPENMP_LIBS_INCL "-lomp")
-endif()
-
 set(LIBS
         ${dialect_libs}
         ${conversion_libs}
@@ -81,7 +77,7 @@ target_link_options(tpp-run PRIVATE
   -lmlir_runner_utils
   -lmlir_async_runtime
   ${TPP_GPU_LINK_FLAGS}
-  ${OPENMP_LIBS_INCL}
+  $<$<BOOL:${USE_OpenMP}>:${OpenMP_C_LIBRARIES}>
   -Wl,--as-needed
 )