after AC_CANONICAL_HOST and default setting of $machine et al.
Don't set $subdirs from $add_ons.
Instead, source add-on/configure fragments early on.
(base_machine): If it's already set, don't set it based on $machine.
(libc_config_ok): New variable, set to no. If an add-on fragment sets
it to yes, skip the tuple sanity check as if --enable-hacker-mode.
(sysnames): Try appending add-on names after machine as well.
* configure: Regenerated.
* config.make.in (add-ons): Set from @add_ons@ instead of @subdirs@.
* Makeconfig ($(common-objpfx)config.status): Also depend on configure
files in $(add_ons) dirs.
* sysdeps/unix/sysv/linux/bits/in.h (struct ip_mreq): Remove
definition, now in netinet/in.h proper.
long. Rewrite example code so that it takes into account l64a output
8f73811bcf