This solves the problem of applications not being able to uniquely select a specific instance of OpenSSL libraries.
That isn't sufficient for anything except possibly windows. On Unix you'll also need to change SONAME (or the equivalent), prefix all the public entry points to the libraries and massage the OpenSSL headers to match to avoid crashes with a mix of OpenSSL binaries in the same process. On the Unix's symbol resolution is something of a lottery and varies even between releases of the same OS. Since the OpenSSL data objects change in size between releases of OpenSSL calling the wrong entry point with data structure that isn't exactly what was expected causes some interesting problems. It's not an impossible problem to solve, but it does require a lot more than a simple rename of the libs. Peter From: "Eichenberger, John" <john.eichenber...@intermec.com> To: "openssl-dev@openssl.org" <openssl-dev@openssl.org>, Date: 29/01/2014 07:55 Subject: Define a method to rename dynamic libraries [patch] Sent by: owner-openssl-...@openssl.org This patch was developed for use with Windows Mobile Dlls, but I think it either works or is close to working for any OS build. The patch itself only enables the ability to rename dynamic libraries using an environment variable named CRYPTO_PREFIX. Unless that environment variable is defined, nothing is really different. When it is defined it is prepended to the names of the libraries, effectively creating uniquely named libraries. This solves the problem of applications not being able to uniquely select a specific instance of OpenSSL libraries. -Ike- John Eichenberger Principal Engineer: Sustaining Engineering: Intermec by Honeywell 425.265.2108 john.eichenber...@intermec.com This message is intended only for the named recipient. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action based on the contents of this information is strictly prohibited. [attachment "RenameDLLs.patch" deleted by Peter Waltenberg/Australia/IBM] ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List openssl-dev@openssl.org Automated List Manager majord...@openssl.org
