Alexander,
I just wanted to add that the libpng problem mentioned in the FAQ can
affect not only users with the unstable tree enabled. I am presently not
using unstable, but I used to get these warnings, which appeared to be
harmless though.
The fact is that after a recent update I ended up with the following

        libpng  1.0.12-6        PNG image format handling library
 i      libpng-shlibs   1.0.12-6        PNG image format handling library
 i      libpng3 1.2.5-4 PNG image format handling library
 i      libpng3-shlibs  1.2.5-4 PNG image format handling library

So the latest swap between libpng and libpng3 left libpng-shlibs.
I checked the info files in the stable tree and found that the only
packages with a Depends or BuildDepends on libpng-shlibs are

libpng
gnuplot-3.8h.0-8 but not gnuplot-3.8i.0-2
r-base-1.6.1-2 and r-base-1.6.2-1 but nnot r-base-1.6.2-2
r-base-atlas-1.6.1-2

plus a host of kde packages.

Since I have none of these installed I tried to remove libpng-shlibs.
As a result X11 hangs on startup when using gnome.
The error I got first was:

dyld: /sw/bin/sawfish can't open library: /sw/lib/libpng.2.dylib  (No such
file or directory, errno = 2)

After reinstalling sawfish gnome starts but I get the following error

dyld: background-properties-capplet can't open library:
/sw/lib/libpng.2.dylib  (No such file or directory, errno = 2)

and no background.

I guess everything will get back to normal if I reinstall (part of) gnome,
assuming that the latest versions do not need libpng.2.dylib.
Is this indeed the case? If not I'll just reinstall libpng-shlibs and live
with the warnings.
Also does anyone know which gnome packages need to be rebuilt?

Thanks in advance

Stefano

On Wed, 12 Mar 2003, Alexander Hansen wrote:

> It's in the FAQ:
>
> http://fink.sourceforge.net/faq/usage-general.php#libpng-versions
>
> On Tue, 2003-03-11 at 23:09, john blumer wrote:
> > Could someone help me straighten this out?  I get multiple x-terms and then this 
> > message:
> >
> > Gnome-Message: gnome_execute_async_with_env_fds: returning -1
> > libpng warning: Application was compiled with png.h from libpng-1.2.5
> > libpng warning: Application  is running with png.c from libpng-1.0.12
> > libpng error: Incompatible libpng version in application and library


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