+find_package(Arrow QUIET)
+
+if(Arrow_FOUND)
+ message( "arrow is installed")
+ add_definitions(-D_ARROW_EXIST)
+endif()
+
+set(CMAKE_CXX_FLAGS "-std=gnu++17 -ggdb -Wnon-virtual-dtor -Wreorder -Wunused-variable -Wtype-limits -Wsign-compare -Wmaybe-uninitialized")
+