[PATCH 1/2] Only support ifunc in nptl/pt-vfork.c

[Roland McGrath]

> ... someone could make an informed decision to share the code via
> 
> #include <sysdeps/unix/sysv/linux/aarch64/pt-vfork.c>
> 
> instead of having it in the nptl/pt-vfork.c where a port could get in trouble
> by default.

Agreed.  That seems simpler than more internal flag macros.  I don't know
why I didn't think of that.  Make sure the longer comment in pt-vfork.c
that one sees for the !HAVE_IFUNC #error suggests this explicitly.


Thanks,
Roland