Hi David,

On 18/03/14 14:12, David Sommerseth wrote:
On 18/03/14 10:51, Jan Just Keijser wrote:
On 18/03/14 10:39, Steffan Karger wrote:
Hi,

On 17/03/2014 23:23, James Yonan wrote:

On 17/03/2014 14:29, Gert Doering wrote:
Right now, if I read configure.ac correct, we require 0.9.6 or later
(and check this only if pkg-config is available) - but obviously,
SSL_OP_NO_TICKET was added later on.

Fix 1: only use SSL_OP_NO_TICKET if available Fix 2: require a more
recent OpenSSL version
I would think an #ifdef should be fine.
SSL_OP_NO_TICKET was added in OpenSSL 0.9.8f / 1.0.0. The ECDH-patchset (for 
2.4) already requires 0.9.8, so I would prefer to require 0.9.8f or newer for 
master/2.4, but just add #ifdef's for 2.3.


I disagree. It is not safe to assume that the #ifdef is bound to a
particular version of Openssl; for example, on my Centos 6.5 box I have
openssl 1.0.1e yet the define
    #define SSL_OP_NO_TICKET                0x00004000L
is NOT present in the system ssl.h file.
I just checked RHEL 6.5 and ScientificLinux 6.4
(openssl-1.0.1e-16.el6_5.4) ... they both have it this:

# grep SSL_OP_NO_TICKET /usr/include/openssl/*
/usr/include/openssl/ssl.h:#define SSL_OP_NO_TICKET                 0x00004000L

this is most odd - I just checked a few other machines (CentOS 6.5) and there the SSL_OP_NO_TICKET is present.
I then reinstalled openssl on the 'flawed' box and now it is present also.
So it seems I spoke too soon... sorry for the noise, although I must say that I'm still in favour of checking for the existence of an IFDEF instead of relying on a particular version...

cheers,

JJK



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