--- On Fri, 4/15/11, /dev/ammo42 <mickeytintincolle@...> wrote:

> From: /dev/ammo42 <mickeytintincolle@...>
> Subject: Re: [trinity-devel] libpng version conflicts
> To: trinity-devel@...
> Date: Friday, April 15, 2011, 3:45 PM
> Fri, 15 Apr 2011 13:23:10 -0700
> (PDT),
> Darrell Anderson <humanreadable@...>
> wrote :
> 
> > [...]
> > kate: WARNING: Pixmap not found for mimetype
> text/plain
> > libpng warning: Application was compiled with png.h
> from libpng-1.4.3
> > libpng warning: Application  is  running
> with png.c from libpng-1.2.44
> > libpng error: Incompatible libpng version in
> application and library
> > 
> > So apparently kdebase (at least) linked to libpng
> 1.4.3 when
> > compiling but oddly wants to run using libpng 1.2.44.
> > 
> > Searching the web hasn't helped me nail the solution
> other than the
> > obvious that there is a conflict between the two
> versions.
> > 
> > I have two versions of libpng installed because that
> is the way
> > Slackware is now bundled.
> > 
> > /usr/include/libpng12/*
> > /usr/include/libpng14/*
> > /usr/lib/libpng*
> > /usr/lib/pkgconfig/libpng12.pc
> > /usr/lib/pkgconfig/libpng14.pc
> > /usr/lib/pkgconfig/libpng.pc ->
> /usr/lib/pkgconfig/libpng14.pc
> > 
> > I'm thinking I should change the libpng.pc sym link
> from 1.4 to 1.2.
> > I am hoping that will force the packages to build with
> libpng 1.2.
> > I'm going to try that but I thought I'd post and see
> whether there
> > might be something else I'm missing.
> > [...]
> > Any ideas how to avoid these libpng conflicts?
> From the Slackbuilds.org mailing list :
> ----
> Wed, 9 Jun 2010 18:49:26 -0300,
> Max Miorim <miorimmax@...>
> wrote :
> 
> > Hi,
> > 
> > The following patches will fix libkate build (using
> libpng12) and make
> > the SlackBuild conform to the template.
> > 
> > As a side note, I have decided to use PNG_CFLAGS and
> PNG_LIBS instead
> > of writing a patch to the source itself or doing
> something like 'sed
> > -e "s#libpng#&12#g configure.ac &&
> autoreconf -f -i' before the
> > './configure'.
> > 
> > Also, this SlackBbuild got removed in
> > c0730536a1d3fdcdd0a8d00f637ce97246a0e42e, the patches
> will apply
> > cleanly on a revert of said commit.
> > 
> > -- Max
> ----
> I attached the patches to this e-mail.
> > 
> > Thanks.
> > 
> > Darrell

Thanks for the reply. I was quite confused for a while with the patches until I realized we were discussing two different kates.

I was referring to Kate the advanced text editor, not the codec. :)

Anyway, there might be a simple fix. I ran configure --help on kdelibs and kdebase. For both packages there is a configure option called --with-extra-includes.

Interestingly, kdelibs automatically links to libpng12 while kdebase does not. I'm building a new kdebase package right now with --with-extra-includes=/usr/include/libpng12.

I added a simple test in the kdebase build script:

if [ -d /usr/include/libpng12 ] && [ -d /usr/include/libpng14 ]; then
  if [ "`readlink /usr/include/libpng | grep libpng14`" ]; then
    EXTRA_INCLUDES="/usr/include/libpng12"
  fi
fi

I'll report back in an hour or so with the results.

Darrell