On Mon, 2 Nov 2020 20:34:04 +0100 Karsten Graul wrote: > + __u8 netdev[IFNAMSIZ]; /* ethernet device name */ In file included from <command-line>:32: ./usr/include/linux/smc_diag.h:135:14: error: ‘IFNAMSIZ’ undeclared here (not in a function) 135 | __u8 netdev[IFNAMSIZ]; /* ethernet device name */ | ^~~~~~~~ make[3]: *** [usr/include/linux/smc_diag.hdrtest] Error 1 make[2]: *** [usr/include] Error 2 make[1]: *** [usr] Error 2 make[1]: *** Waiting for unfinished jobs.... make[1]: *** wait: No child processes. Stop. make: *** [__sub-make] Error 2 In file included from <command-line>:32: ./usr/include/linux/smc_diag.h:135:14: error: ‘IFNAMSIZ’ undeclared here (not in a function) 135 | __u8 netdev[IFNAMSIZ]; /* ethernet device name */ | ^~~~~~~~