Re: [gentoo-user] Stable users: libpng-1.4

[Alan McKinnon]

On Wednesday 30 June 2010 23:17:28 Mick wrote:
> On Tuesday 29 June 2010 22:56:56 Alan McKinnon wrote:
> > Seems like the horrendous screw-up that was the libpng-1.4 update never
> > got fixed properly and is hitting stable users now.
> >
> > Flameeyes, in his usual in-your-face style, has documented what needs to
> > be done:
> >
> > http://blog.flameeyes.eu/2010/06/29/stable-users-libpng-update
> >
> > If you are a stable user, save yourself a lot of trouble over the next
> > few days, read his blog and do what he says. He has this uncanny ability
> > of almost always being correct on technical toolchain matters
>
> Blast!  I emerged media-libs/libpng-1.4.3 only 2 days ago and ... I
> followed what the elog told me which was to run the very scrip that
> Flameeyes says it causes long term problems!  O_O
>
> This is what I have in terms of libpng* (on an amd64 system):
>
> # ls -la /usr/lib/libpng*
> -rw-r--r-- 1 root root 236422 Jun 28 12:56 /usr/lib/libpng14.a
> -rw-r--r-- 1 root root    935 Jun 28 12:57 /usr/lib/libpng14.la
> lrwxrwxrwx 1 root root     18 Jun 28 12:56 /usr/lib/libpng14.so ->
> libpng14.so.14.3.0
> lrwxrwxrwx 1 root root     18 Jun 28 12:56 /usr/lib/libpng14.so.14 ->
> libpng14.so.14.3.0
> -rwxr-xr-x 1 root root 158400 Jun 28 12:56 /usr/lib/libpng14.so.14.3.0
> lrwxrwxrwx 1 root root     10 Jun 28 12:56 /usr/lib/libpng.a -> libpng14.a
> -rw-r--r-- 1 root root    935 Jun 28 12:57 /usr/lib/libpng.la
> lrwxrwxrwx 1 root root     11 Jun 28 12:56 /usr/lib/libpng.so ->
> libpng14.so
>
> # ls -la /usr/lib64/libpng*
> -rw-r--r-- 1 root root 236422 Jun 28 12:56 /usr/lib64/libpng14.a
> -rw-r--r-- 1 root root    935 Jun 28 12:57 /usr/lib64/libpng14.la
> lrwxrwxrwx 1 root root     18 Jun 28 12:56 /usr/lib64/libpng14.so ->
> libpng14.so.14.3.0
> lrwxrwxrwx 1 root root     18 Jun 28 12:56 /usr/lib64/libpng14.so.14 ->
> libpng14.so.14.3.0
> -rwxr-xr-x 1 root root 158400 Jun 28 12:56 /usr/lib64/libpng14.so.14.3.0
> lrwxrwxrwx 1 root root     10 Jun 28 12:56 /usr/lib64/libpng.a ->
> libpng14.a -rw-r--r-- 1 root root    935 Jun 28 12:57 /usr/lib64/libpng.la
> lrwxrwxrwx 1 root root     11 Jun 28 12:56 /usr/lib64/libpng.so ->
> libpng14.so
>
> Is this OK?  What now?

I remember now what I eventually did to fix all my libpng problems back then:

unmerge libpng
delete everything left with libpng in it's name
emerge -pvuND world just to see what was now busted
same with revdep-rebuild
re-emerge libpng and let portage pick the version to merge
emerge -avuND world
revdep-rebuild
  repeat till no problems reported

and lafilefixer --justfixit somewhere in the mix as well just for good 
measure.

This is called the "throw shit at the wall and hope some of it sticks" method 
of updating systems. By happy good fortune, it worked out for me.

aka the dark underside of source-based systems :-)



-- 
alan dot mckinnon at gmail dot com