Streamline OpenMP linkage.

CMakeLists.txt

@@ -187,9 +187,7 @@ find_package(OpenMP 4.0 QUIET)
 if (OpenMP_FOUND)
     message(STATUS "Found OpenMP ${OpenMP_CXX_VERSION} to speed-up library utilities (like file parsing).")
     set(PLSSVM_FOUND_OPENMP_FOR_UTILITY ON)
-    if (${CMAKE_CXX_COMPILER_ID} MATCHES "IntelLLVM")
-        target_link_libraries(${PLSSVM_BASE_LIBRARY_NAME} PUBLIC -fopenmp)
-    elseif (${CMAKE_CXX_COMPILER_ID} MATCHES "MSVC")
+    if (${CMAKE_CXX_COMPILER_ID} MATCHES "MSVC")
         target_compile_options(${PLSSVM_BASE_LIBRARY_NAME} PUBLIC -openmp:llvm -openmp:experimental)
     else ()
         target_link_libraries(${PLSSVM_BASE_LIBRARY_NAME} PUBLIC OpenMP::OpenMP_CXX)

src/plssvm/backends/OpenMP/CMakeLists.txt

@@ -40,11 +40,16 @@ set(PLSSVM_OPENMP_SOURCES
 # set target properties
 set_local_and_parent(PLSSVM_OPENMP_BACKEND_LIBRARY_NAME plssvm-OpenMP)
 add_library(${PLSSVM_OPENMP_BACKEND_LIBRARY_NAME} SHARED ${PLSSVM_OPENMP_SOURCES})
-target_link_libraries(${PLSSVM_OPENMP_BACKEND_LIBRARY_NAME} PRIVATE $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:OpenMP::OpenMP_CXX>)
-# special command line options for MSVC:
-# -openmp:llvm -> enables unsigned loop indexes in OpenMP parallel for loops
-# -openmp:experimental -> enables OpenMP's SIMD instructions
-target_compile_options(${PLSSVM_OPENMP_BACKEND_LIBRARY_NAME} PRIVATE $<$<CXX_COMPILER_ID:MSVC>:-openmp:llvm -openmp:experimental>)
+
+# link against OpenMP
+if (${CMAKE_CXX_COMPILER_ID} MATCHES "MSVC")
+    # special command line options for MSVC:
+    # -openmp:llvm -> enables unsigned loop indexes in OpenMP parallel for loops
+    # -openmp:experimental -> enables OpenMP's SIMD instructions
+    target_compile_options(${PLSSVM_OPENMP_BACKEND_LIBRARY_NAME} PRIVATE -openmp:llvm -openmp:experimental)
+else ()
+    target_link_libraries(${PLSSVM_OPENMP_BACKEND_LIBRARY_NAME} PRIVATE OpenMP::OpenMP_CXX)
+endif ()
 
 # additional compilation flags
 target_compile_options(${PLSSVM_OPENMP_BACKEND_LIBRARY_NAME} PRIVATE $<$<COMPILE_LANG_AND_ID:CXX,GNU,Clang>:-Wconversion>)