“CPU you selected does not support x86-64 instruction set” error on Cygwin-x64

Question

I\'m trying to install openssl in cygwin by following these instructions: I dowloaded the latest tarball from this site http://www.openssl.org/source/, and put it in C:\\cyg

Answer 1

here is one post you can refer to. the basic idea is that specifying -march=x86-64 and avoid using assembly language. assembly language is not as portable as c language.