Linux Segmentation fault on start on Fedora 20 Heisenbug and Ubuntu 14.04 Trusty

For those of you guys who have that problem. When started in console, game says:

Code:

PNG warning: Application built with libpng-1.5.5 but running with 1.6.3
[13:51:21] LOAD PNG: Internal PNG create read struct failure

Here is a solution:
1. Make sure that libpng15 package is installed (rpm -q libpng15). If not - install it (yum install libpng15).
2. Use library preload technique: LD_PRELOAD=/usr/lib/libpng15.so.15 ./rungame.sh

Hope that will help someone.

UPD.: The same aplies for KAG beta, e.g. LD_PRELOAD=/usr/lib/libpng15.so.15 ./KAG

 

Any help? I get the following and it does the same thing...

LD_PRELOAD=/usr/lib64/libpng15.so.15 ./KAG
ERROR: ld.so: object '/usr/lib64/libpng15.so.15' from LD_PRELOAD cannot be preloaded: ignored.
PID: 21677

Thanks!

 

I googled around a bit and it should mean that that's not the correct path.

 

Well, path can be system specific. To find correct path one can use locate. Here is an example from my current system (fedora 20, x86_64, latest updates):

Code:

$ locate libpng15.so
/usr/lib/libpng15.so.15
/usr/lib/libpng15.so.15.17.0
/usr/lib64/libpng15.so.15
/usr/lib64/libpng15.so.15.17.0

I took the first path and it works.
You have to make sure that libpng15 installed (I have for both platforms - libpng15-1.5.17-1.fc20.x86_64 and libpng15-1.5.17-1.fc20.i686).

 

Thx for help! :)

 

Just upgraded to Ubuntu 14.04 (trusty). Unfortunately it has no libpng15 in standard repositories. I've found source code of library at here, built it with usual way (./configure && make). I didn't want to install it globally so I copied shared library (in my case it was in <libpng_build_dir>/.libs/libpng15.so) to KAG directory. After that game is runnable with LD_PRELOAD=./libpng15.so ./rungame

 

Got the same issue after upgrading to Kubuntu 14.04.

I tried FarmerJohn's solution and failed. :( The program would still claim that it runs with libpng-1.2.50. libpng15.so is located in the application folder, it weighs 694454 bytes, is owned by current user and has -rwxrwxr-x permissions.

Suggestions?

 

Check if you've built library for 64-bit system. That can be problem because game uses i386 libraries.

 

How do i build an i386 version, FarmerJohn? I'm on 64-bit Kubuntu.

Also, can you share the libpng15.so file that worked for you?

 

It's mine version of libpng15.so (gzipped because .so is not allowed here; to unzip - gunzip libpng15.so.gz).

In case you want to check if it's i386 library - use ldd. Here's output on my Ubuntu system:

Code:

$ ldd ./libpng15.so
  linux-gate.so.1 =>  (0xb77a0000)
  libz.so.1 => /lib/i386-linux-gnu/libz.so.1 (0xb7725000)
  libm.so.6 => /lib/i386-linux-gnu/libm.so.6 (0xb76df000)
  libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb752f000)
  /lib/ld-linux.so.2 (0xb77a1000)

I have 64-bit system at home and can try to build it this evening (I have Fedora there and it has libpng15 in standard repositories, but will try to build it manually).

BTW just tried. Don't forget the dot and slash after LD_PRELOAD, e.g. LD_PRELOAD=./libpng15.so

--- Double Post Merged, Apr 30, 2014, Original Post Date: Apr 29, 2014 ---

Had no time to check it personally, but googled around and found that answer.

In few words:

Code:

sudo apt-get install gcc-multilib g++-multilib
./configure --host=i686-linux-gnu "CFLAGS=-m32" "CXXFLAGS=-m32" "LDFLAGS=-m32" 

 

The game runs successfully with your version of libpng15. Thank you, FarmerJohn, you're awesome!

Instructions for anyone who experiences the issue:

1. Download the attachment from FarmerJohn's comment: https://forum.kag2d.com/attachments/libpng15-so-gz.33541/
2. Extract it into the game directory.
3. Open a terminal, change the current folder to the game directory.
4. Run:
   Code:

   LD_PRELOAD=./libpng15.so ./rungame

5. Radiate love towards FarmerJohn.

 

I had to use:

Code:

LD_PRELOAD=./libpng15.so sh rungame.sh 

but it worked!