lwIP is supplied as part of some Cube repositories, e.g. for the H7. I think it would be a nice feature if one could use the lwIP contained inside that repository or in a separate cloned repository as link it as STM32::LWIP . The only file lwIP requires to be compiled as a separate static library is the lwipopts.h file. There are some example applications which provide this file, but the first solution might be to expect the user to supply this file.