> On Nov 28, 2016, at 3:40 PM, Salz, Rich <rs...@akamai.com> wrote:
>
> Perhaps I didn't understand the original question. If all you want to do is
> compare 1.0.2 and 1.1.0, then look at OPENSSL_VERSION_NUMBER; if defined at
> it's 0x10101000L or greater, then you;'re on the 1.1.x branch, otherwise you
> are not and therefore on 1.0.2 or earlier.
The OPENSSL_VERSION_NUMBER macro dates back to some of the earliest
OpenSSL releases, and is therefore always defined. Postfix has the
following comment in src/tls/tls_misc.c which covers the relevant
history:
/*
* OPENSSL_VERSION_NUMBER(3):
*
* OPENSSL_VERSION_NUMBER is a numeric release version identifier:
*
* MMNNFFPPS: major minor fix patch status
*
* The status nibble has one of the values 0 for development, 1 to e for
* betas 1 to 14, and f for release. Parsed OpenSSL version number. for
* example
*
* 0x000906000 == 0.9.6 dev 0x000906023 == 0.9.6b beta 3 0x00090605f ==
* 0.9.6e release
*
* Versions prior to 0.9.3 have identifiers < 0x0930. Versions between
* 0.9.3 and 0.9.5 had a version identifier with this interpretation:
*
* MMNNFFRBB major minor fix final beta/patch
*
* for example
*
* 0x000904100 == 0.9.4 release 0x000905000 == 0.9.5 dev
*
* Version 0.9.5a had an interim interpretation that is like the current
* one, except the patch level got the highest bit set, to keep continu-
* ity. The number was therefore 0x0090581f.
*/
--
Viktor.
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