Arch Linux

broch

Banned

From: L.A. California

Registered: 2006-11-13

Posts: 975

Re: cannot find -lpng12

thanks wonder,
you did help a lot
I am going to try and see if I can fix this according to your suggestions tomorrow. System is usable so this can wait as I have other stuff to do first.

Thanks again

alperosm

Member

Registered: 2010-02-03

Posts: 1

Re: cannot find -lpng12

@wonder: Great job helping people in forums! Great troubleshooting info in this thread!

Just registered to the forum to say thanks. Keep up the good work, it is much appreciated.

PS: For me the problem was "cairo-cleartype" package I installed from AUR and then forgot about. Removing libpng12, recompiling cairo-cleartype, followed buy a reinstall of gtk2 seem to cure all the linker problems. Just as wonder prescribed!

raymboard

Member

Registered: 2010-01-22

Posts: 61

Re: cannot find -lpng12

I still have this problem.

Withought libpng12 installed thunar won't open, saying:

thunar: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

and when I try to recompile thunar it fails saying:

/usr/bin/ld: cannot find -lpng12
collect2: ld returned 1 exit status

With libpng12 installed thunar opens but doesn't display any thumnails and says:

libpng warning: Application was compiled with png.h from libpng-1.4.0
libpng warning: Application  is  running with png.c from libpng-1.2.40
libpng error: Incompatible libpng version in application and library

and recompiling thunar succeeds but does not fix the error.

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Linux is not an operating system it's a kernel. You're using GNU/Linux. http://www.gnu.org/gnu/linux-and-gnu.html

wonder

Developer

From: Bucharest, Romania

Registered: 2006-07-05

Posts: 5,941

Website

Re: cannot find -lpng12

@raymboard all the information about how to debug and fix your problem are in this thread and in other threads like this.

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Give what you have. To someone, it may be better than you dare to think.

.:B:.

Forum Fellow

Registered: 2006-11-26

Posts: 5,819

Website

Re: cannot find -lpng12

Of course you still have the problem.

[stijn@hermes ~]$ grep ubuntu /var/log/pacman.log |tail -3
[2010-02-04 00:01] installed fontconfig-ubuntu (2.8.0-2)
[2010-02-04 00:05] installed libxft-ubuntu (2.1.14-2)
[2010-02-04 00:09] installed cairo-ubuntu (1.8.8-2)

If you have that problem, that means you have some custom packages that need rebuilding. I am betting the three above - fontconfig, libxft, cairo - are involved. Installing the old libpng is just an ugly hack for things that have to get fixed - fixed by you, the user, and not the devs.

Arch devs have done a complete rebuild; they couldn't have done a better job. Hundreds of users had a seamless upgrade, if something chokes, the stuff from the AUR or your own builds are the first things to look at.

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