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Re: [pgsql-packagers] Getting to 8.3 beta1

From: Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>
To: sfrost(at)snowman(dot)net, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Heikki Linnakangas <heikki(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org, pgsql-packagers(at)postgresql(dot)org
Subject: Re: [pgsql-packagers] Getting to 8.3 beta1
Date: 2007-09-28 15:49:58
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Lists: pgsql-hackers
Stephen Frost wrote:
> * Zdenek(dot)Kotala(at)Sun(dot)COM (Zdenek(dot)Kotala(at)Sun(dot)COM) wrote:
>> I'm for bumbing. Because if we use same number it also means that new 
>> binary will able to use old library. But if there are two new functions 
>> number must be increased. Standard practice how ELF loader works is 
>> following:
>> Each library could have tree numbers libxxx-X.Y.Z. Loader/Linker ignores Z 
>> number. It means any binaries can be linked e.g. with X.Y.Z+1 or X.Y.Z-1. 
>> This is used for bugfixing. Middle number Y means that binaries which 
>> requires Y can also use Y+1 (and linker takes it), but not Y-1. It is used 
>> for adding new thing into interface - backward compatible. Change in major 
>> number X means it is not backward compatible libraries.
> Right, so bump the minor and leave the major (and the overall 'soname')
> the same.
>> In PostgreSQL perspective, we use only major number.  We can increase main 
>> number (X) or best way is add Y and keep major number same. But I don't 
>> know if it is possible in current infrastructure and if it will work 
>> everywhere.
> I'm confused by this.  I see both in Makefile.shlib and on my system
> that we have a minor version so I don't entirely follow when you say "we
> use only major number".  

I'm Sorry for confusion, I overlooked it. You have right. Unfortunately 
struct Port has been modified and by my opinion it means we must bump 
major version. See;r2=1.63 


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