https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68665
--- Comment #3 from Robert Shuler <mc1soft at yahoo dot com> --- Created attachment 36904 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36904&action=edit search of all quad-related files in the Cygwin installation showing dll's with libquadmath functions
