Re: Libtool versioning made easy (was Re: Converting libraries andpluginsto use gtk3

[Steve Frécinaux <nudrema gmail com>]

On 07/01/2010 08:15 AM, dmacks netspace org wrote:

> > In summary, I think the proposal simplifies libtool versioning to a great
>  > extent and reduces errors without introducing major drawbacks.
> How about a simplified set of variables that are still manually
> adjusted? Something like:
>
>   INTERFACE_CHANGE=2
>   INTERFACE_BREAK=2
>
> when you change the interface (in any way) you bump I_C. When you break
> backward compatibility, you also bump I_B. From those, easy to calculate
> what libtool -version-info is sufficient to track SONAME and to handle
> its other important linker flags.

To be really usable, we would need to use three version variables and 
let libtool, autoconf or someone to infer the other values from there.

VERSION=2.22.5
LAST_INTERFACE_CHANGE=2.22.0
LAST_INTERFACE_BREAK=2.20.0

This is the only scheme that would not require extent knowledge on how 
libtool versioning works.