[Proj] ABI version numbers

[Sebastiaan Couwenberg]

On 10/27/2017 12:37 PM, Roger Oberholtzer wrote:
> On Fri, Oct 27, 2017 at 12:05 PM, Kristian Evers <kreve at sdfe.dk> wrote:
>> Not that I am aware of. There is this https://github.com/OSGeo/proj.4/issues/501 though, which gives you some idea of how the binaries how changed over time.
>>
>> If you volunteer to create an overview of the ABI versions I am sure we can find somewhere in the docs to put it :-)
> 
> The reason I ask is that openSUSE use these numbers when naming the
> package. The numbers do come from the build:
> 
> 4.8.0 -> libproj.so.0.7.0
> 4.9.2 -> libproj.so.9.1.0
> 4.9.3 -> libproj.so.12.0.0
> 
> And so on. So they name the packages libproj0-4.8.0, libproj9-4.9.2,
> libproj12-4.9.3.
> 
> I accused them of randomly generating the 0, 9 and 12. They said - no
> - it comes from the library itself. Which it indeed does seem to do.
> So I thought I would see if this is recorded somewhere.

The SOVERSION is calculated using the libtool -version-info arguments.

 https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html

The ABI tracker has an overview of the SOVERSION for past releases:

 https://abi-laboratory.pro/tracker/timeline/proj/

Kind Regards,

Bas

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