Cmake: some people build shared libtbb

Author: andresailer

cmake/modules/FindTBB.cmake

@@ -300,7 +300,7 @@ FIND_PACKAGE_HANDLE_STANDARD_ARGS (TBB REQUIRED_VARS TBB_ROOT_DIR
   ${_TBB_FPHSA_ADDITIONAL_ARGS})
 
 if(TBB_FOUND)
-  add_library(TBB::tbb IMPORTED STATIC GLOBAL)
+  add_library(TBB::tbb IMPORTED UNKNOWN GLOBAL)
   set_target_properties(TBB::tbb PROPERTIES
     IMPORTED_LOCATION ${TBB_LIBRARY}
     INTERFACE_INCLUDE_DIRECTORIES ${TBB_INCLUDE_DIR})