dovecot - Jul 2014 - [patch] enable ECDH auto functions based on feature defines, not on version number

Hello,

I recently tried to build my system with libressl instead of openssl.

In dovecot one issue that popped up was that libressl doesn't have the
ECDH auto functions from openssl 1.0.2 beta versions. However as the
#ifdef's in dovecot's code check for the openssl version and
libressl's
version numbers are higher the compilation fails there.

Attached is a patch that will change that checks. Instead of checking
for the version number it checks for the availability of the feature
itself (by checking for the define of SSL_CTRL_SET_ECDH_AUTO). This
should make this check more robust and work independently of the
version number of the used openssl instance.

cu,
-- 
Hanno B?ck
http://hboeck.de/

mail/jabber: hanno at hboeck.de
GPG: BBB51E42
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