On Fri, 26 Jul 2024 17:45:06 -0700 Andrii Nakryiko wrote: > or we could > > #ifndef _GNU_SOURCE > #define _GNU_SOURCE > #endif > > (though we have 61 places with that...) so as to not have to update > every target in Makefile. AFAIU we have -D_GNU_SOURCE= twice _in the command line args_ :( One is from the Makefile which now always adds it to CFLAGS, the other is "built-in" in g++ for some weird reason. FWIW I have added this patch to the netdev "hack queue" so no preference any more where the patch lands :)