Default to OpenMP build

Author: zhihaoy

CMakeLists.txt

@@ -28,6 +28,12 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)
 
+if("${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "MSVC")
+    get_filename_component(_cl_bin_dir ${CMAKE_C_COMPILER} DIRECTORY)
+    file(TO_CMAKE_PATH "${_cl_bin_dir}/../lib/libomp.lib" OpenMP_libomp_LIBRARY)
+    file(TO_CMAKE_PATH "${_cl_bin_dir}/libomp.dll" OpenMP_libomp_DLL)
+endif()
+
 find_package(StandardMathLibrary REQUIRED)
 find_package(OpenMP)