Quoting Dustin Oprea <aeolianmeson@xxxxxxxxxxxxxxxx>:
I'm trying to upgrade my OpenSSL installation, but many things depend
on the libssl.so.5 library, which is soon to become libssl.so.6 . Is
there any way to maintain this older file, while at the same time
installing everything else?
There's several ways to solve that problem.
Include both libssl.so.5 and libssl.so.6 in new RPM. This is the simplest
solution, but the size of your openssl package is going to grow over
time. You
also won't be able to get rid of libssl.so.5 from the system once you
don't need
it anymore.
or
Create compatibility package (like compat-openssl-xxx, where xxx is OpenSSL
version) that will contain only libssl.so.5 (and other runtime libs from
OpenSSL package, such as libcrypto for example). This is relatively simple
solution, however you'll need to create new compat-libssl-xxx every time you
create new package with new versions of libraries. Red Hat usually
does things
this way (you'll find piles of compat-* packages in every Red Hat release for
backward compatibility with old(er) 3rd party applications).
or
When packaging, package runtime libraries (libssl.so.x, libcrypto.so.x and so
on) into separate subpackage called openssl-libs. Package libssl.so,
libcrypto.so, and so on (links to lib*.so.x) into openssl-devel. You'd set
dependencies so that openssl requires exactly same version of
openssl-libs. Openssl-devel would require exactly same version of both
openssl and
openssl-libs. Openssl-libs would not depend on either openssl or
openssl-devel
(obviously). That way, you'll be able to have multiple versions of
openssl-libs
installed in parallel, but only one version of openssl and
openssl-devel. This
is (IMO) the best solution, but requires a bit more initial work to create
subpackages correctly (however, it pays in the long run, since you don't need
to create new compat-* packages). I believe this is the way Debian handles
libraries (however, haven't worked with Debian in veeeery long time, so not
really sure if this is completely correct statement).
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