Re: [gentoo-user] Safe to install libpng-1.2.44?

[Dale <rdalek1967@gmail.com>]

Enrico Weigelt wrote:
> Hi folks,
>
> <big_snip />
>
>
> I think the libpng issue shows up a more generic problem:
> we IMHO dont have a way for recording, which version / interface
> of some version a package is built against. The need for things
> like revdep-rebuild also comes from that.
>
> I'm currently working on an generic design for that, some ideas:
> (of course, yet limited to C and similar languages ;-o)
>
> * libraries with (incompatible) interface changes should install
>    their headers under some own versioned prefix
> * library imports should _always_ happen via pkg-config
>    (dont use .la files)
> * pkg-config descriptors are extended to declare the API and
>    ABI version and generation, so interface breaks can be
>    determined automatically
> * the package management records which version of some imported
>    library a package was built against (some kind of revdep-scan
>    between compile and merge)
> * with that information the package management can do an smooth
>    upgrade (w/o temporary breaks until revdep-rebuild finished)
>
>
> cu
>    

This may be something you should post on -dev.  They are the ones that 
handle this sort of thing.

Things are better there but take a flack jacket.  Never hurts to have 
one just in case you need it.  ;-)

Dale

:-)  :-)