Re: [PATCH roland/bz14743] BZ#14743: Move clock_* symbols from librt to libc.

[Mike Frysinger <vapier at gentoo dot org>]

On Monday 22 October 2012 16:45:30 Roland McGrath wrote:
> > yeah, the tests no longer crash after that
> > 
> > configure define HAVE_IFUNC to 1, and
> > libc_cv_asm_gnu_indirect_function=yes, but ia64 doesn't have ifunc
> > support.
> 
> OK.  This is Working As Advertised.  Machines that don't actually support
> IFUNC should have a sysdeps/.../configure that does:
> libc_cv_asm_gnu_indirect_function=no
> ...which is what I said in the original posting.

sure, but no arches do this :).  unless i missed something in your branch, if 
you were to merge/push that today, you'd break every arch except 
x86/x86_64/sparc/s390.

> If you want to work on souping up an automatic configure test, more power
> to you.  But that still won't tell you whether the dynamic linker support
> is actually implemented.

true, but i don't think the two things are mutually exclusive.  for all arches 
that lack ifunc support in the ldso, they should manually set 
libc_cv_asm_gnu_indirect_function=no.  we should also have a test that makes 
sure the binutils supports it because all the ifunc support so far has been 
optional.
-mike

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