how to remedy mno cygwin error?

Question

I\'m working on compiling a library in windows with GCC and Make. When I run make, I get the following error:

unrecognized command line option \'-mno-

Answer 1

The current cygwin gcc compiles only for cygwin itself.

-mno-cygwin is an obsolete flag from gcc 3.x time that allowed the cygwin compiler to compile mingw (not cygwin) programs.

The switch was removed long time ago and true cross compilers

mingw64-x86_64-gcc-core
mingw64-i686-gcc-core
cygwin-mingw

were made available

Latest update:
https://sourceware.org/ml/cygwin-announce/2016-11/msg00020.html