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Re: RPM macros question



On Thu, Aug 02, 2012 at 12:41:49PM -0600, Dmitry Makovey wrote:

> I'm working on bringing pgpool-II packages (postgresql-pgpool-II-3.1.2-1) from 
> Fedora over to RHEL6. I've already "hacked" Fedora version to play nice with 
> RHEL (removing systemd references and supplanting systemd unit with init 
> script). I have also conditionalized it to build either one depending on 
> whether systemd is to be used or not using the 
> 
> %if %{systemd_enabled}
> ...
> %else
> ...
> %endif
> 
> blocks. However I can't quite figure out an optimal way of determining which 
> platform package is being compiled for (in other words: how to set up 
> systemd_enabled macro automatically rather than rely on manual setup). I'm 
> sure people on this list came across this problem more than once, and I would 
> like to know what's the standard way of resolving it. What I'm trying to 
> achieve is to get one SPEC for both Fedora and RHEL. Am I attacking this 
> problem the wrong way?

I would suggest to do it the following way:

%if 0%{?rhel} && 0%{?rhel} <= 6
%define systemd_enabled 0
%else
%define systemd_enabled 1
%endif

This is the way I do it in my backports (e.g. PostgreSQL 9.x for RHEL 6.x).

-- 
--    Jos Vos <jos xos nl>
--    X/OS Experts in Open Systems BV   |   Phone: +31 20 6938364
--    Amsterdam, The Netherlands        |     Fax: +31 20 6948204


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