SSL: Method error with 0.5.6

[mattjbray]

Could be related to the switch to dune?

Minimal repro:

FROM ocaml/opam2:alpine-3.7-ocaml-4.06

RUN opam repo set-url default https://opam.ocaml.org && opam update
RUN sudo apk add --no-cache m4 pkgconf libressl-dev
RUN opam install ssl=0.5.6 cohttp-lwt-unix lwt_ssl

$ docker build . -t ssl-repro
...
$ docker run -it --rm ssl-repro cohttp-curl-lwt https://reddit.com
cohttp-curl: internal error, uncaught exception:
             SSL: Method error

Also reproducible on my OSX machine.

[rgrinberg]

Thanks for the bug report. I can reproduce this as well. Debugging.

[rgrinberg]

Okay, I see what's the issue. The old code relied on a few defines being available that were discovered via autoconf. Will fix.

[rjbou]

I had the same error SSL: Method error while using opam publish. ftm, I'll freeze ssl to 0.5.5.