On Mon, Oct 01, 2018 at 12:47:01PM -0400, Harry Putnam wrote: > cat /etc/debian_version > 9.4
> I do have openssl and libssl-dev installed; In stretch, libssl-dev is the development package for OpenSSL version 1.1. This is a relatively new version of OpenSSL, and it is not compatible with version 1.0. Most programs that use OpenSSL will be expecting to use the version 1.0 API. I don't know your particular program, but it's a reasonable guess that it wants the older version. Try installing libssl1.0-dev (which will remove libssl-dev) and see if that works. You can switch back and forth as needed when compiling various programs, but you can't have both installed at the same time.
