stunnel fails to build

[Walter Schwarzenfeld]

I think you should file a PR. The try with the Makefile was a "weak" one.
I think it is the same problem as appears in other ports with libressl.
e.g. (this patch is from 2014 and only an example )
"HAVE_RAND_EGD -.thing"
https://github.com/sabotage-linux/sabotage/commit/9b47cbbf3ce903dee042c45c8197db066e8e0053

I can't provide a patch, cause I can't test it.