source RPMs and updating

[brian]

Craig White wrote:
> On Wed, 2009-01-21 at 22:30 -0500, brian wrote:
>> I've built my own Postfix package from SRPM and have recently
>> updated it. To do so, I used the newer SRPM and repeated the
>> process.
>> 
>> But, I'm wondering if, once a package has been built, can it be
>> updated using a pre-built RPM without losing the specs used to
>> build the original? Or, will the newer RPM simply override
>> everything according to how it was built?
>> 
>> Just to clarify, the original built-from-source package was: 
>> postfix-2.5.1-1.sasl2.spf.fc8.i386.rpm
>> 
>> I downloaded a newer SRPM, built and installed: 
>> postfix-2.5.6-1.sasl2.spf.fc8.i386.rpm
>> 
>> But, could I have simply done:
>> 
>> rpm -Uvh postfix-2.5.6-1.fc8.i386.rpm
>> 
>> ... and had rpm take care to install in the same manner as was the
>>  original SRPM?
> ---- you asked...
> 
>> Or, will the newer RPM simply override everything according to how
>> it was built?
> 
> I believe the answer here is yes. If you were to install the
> pre-built binaries, the features included are only the ones in the
> spec file used by the packager who built it.

What I should have asked, actually, was, is there some flag that I can 
use when updating that will cause rpm to use the spec that the 
already-installed package was built with?

Anyway, no biggie. I was just curious.

> by the way...Fedora 8 will no longer receive any updates which means
> that security updates will bypass you.
> 
> It's time to upgrade the whole system.

~sigh~ yeah, that time again.