Re: [gentoo-user] Re: libpng12 is missing [TEMP SOLN]

[Roy Wright]

On May 16, 2010, at 2:30 AM, Chris Walters wrote:

> On 5/15/2010 11:06 AM, Roy Wright wrote:
>> Argh.  Just have to vent a little.
>>
>> So on to my list a applications to be installed.  Firefox check, openoffice check, handbrake...crap.  Handbrake is one of the non-standard packages that includes their own version of support libraries.  You guessed it, libpng12 dependent.  Argh!
>>
>> Have fun,
>> Roy
>>
>
> I had the same problem with a 'missing' libpng12.  There are 2 slots for
> libpng: slot 0 and slot 1.2.  You DON'T want anything in the 1.2 slot.
> What you DO want is the lonely ebuild in the 0 slot.  Why?  It will
> create the libpng12.la file that is needed for packages to find the
> library.  So this is what I did:
>
> 1.  Ran "emerge -C libpng" to remove ALL versions of libpng that were
> installed.
> 2.  Ran "emerge =libpng-1.2.43-r2".  I believe that is the version of
> the slot 0 libpng.
> 3.  Ran "lafilefixer --justfixit" -- just in case.
> 4.  Re-emerged cairo to make sure it was linked to my newly installed
> libpng12
> 5.  Belatedly realized that I should mask every version of libpng above
> the slot 0 one, and did so.
> 6.  Ran "equery d libpng" from the 'gentoolkit' package.
> 7.  Re-emerged everything on that list (even Open office - ugh).
>
> In step 7, everything compiled and installed just fine - no errors.
> From what I can see, this looks like an upstream bug, where their source
> is coded to look only for libpng12, and nothing else.  For me it would
> stop with an error during the linking phase, or right at the beginning
> (at least those packages had checks).
>
> I hope this helps someone.
>
> Chris
>

Got handbrake installed.  When initially going thru the mess I ended up with
both slot 0 and slot 1.2 installed.  So unmerged slot 1.2, did a revdep-rebuild,
then handbrake built fine.

So system is (for now at least) pure 1.4.

Have fun,
Roy