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

[pinskia at gcc dot gnu.org]

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

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(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