[Bug libquadmath/68665] fails to link quad math functions even though cygquadmath-0.dll is present

["mc1soft at yahoo dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68665

--- Comment #8 from Robert Shuler <mc1soft at yahoo dot com> ---
(In reply to Robert Shuler from comment #7)
> (In reply to Andrew Pinski from comment #6)
> > (In reply to Robert Shuler from comment #5)
> > > I just did a from-scratch installation on a different computer (at the
> > > office) with Win7 of cygwin-64 GCC and the quad math package.  The results
> > > are exactly the same.  Built-in _float128 works, but identical error
> > > messages trying to use the functions.  In this case, however THE DLLs ARE
> > > MISSING.
> > > 
> > > Here is result of trying -lquadmath on the office installation.
> > Try:
> > gcc  -o test128a test128a.c -lquadmath
> 
> That works on the WinXP 32 bit installation at home.  It's definitely order
> dependent.  I will try it on the 64 bit installation in the morning and post
> results here.  Thanks for your assistance.  (Probably that should be added
> to the manual, which I did read thoroughly)

On the Cygwin64 installation on Win 7 at the office (where for some reason the
dll's are not present), it does not work.  Same error.  I used Cygwin's
installer, installing from the net, checked GCC and Quad Precision libs, and
allowed all prerequisites it wanted.