So after updating my fedora-rawhide machines, I started receiving an interesting error: In file included from /usr/include/features.h:397:0, from /usr/include/bits/libc-header-start.h:33, from /usr/include/stdio.h:28, from ../gnulib/lib/stdio.h:43, from util/vircgroup.c:26: /usr/include/sys/sysmacros.h:88:1: note: declared here __SYSMACROS_DEFINE_MINOR (__SYSMACROS_FST_IMPL_TEMPL) ^ util/vircgroup.c: In function 'virCgroupAllowDevicePath': util/vircgroup.c:2944:33: error: '__major_from_sys_types' is deprecated: In the GNU C Library, `major' is defined by <sys/sysmacros.h>. For historical compatibility, it is currently defined by <sys/types.h> as well, but we plan to remove this soon. To use `major', include <sys/sysmacros.h> directly. If you did not intend to use a system-defined macro `major', you should #undef it after including <sys/types.h>. [-Werror=deprecated-declarations] major(sb.st_rdev), ^~~~~ It looks like we might need to reorder the includes, but whatever I do, I still get the warning. Updating gnulib doesn't help, so either we need to #undef minor/major/makedev, or maybe gnulib needs to fix that (my guess inspired by the include stack above). So I figured I just post my findings here and let others continue the wondering so that I can do some more useful stuff. Have a nice day, Martin