another problem of gtk+1.0 and gtk+2.0

Hi,
I am using opencv and gtk libraries. After compiling with: gcc -Wall -g `pkg-config --cflags --libs opencv` `gtk-config --cflags --libs` -o helloworld main.c, I now get a Segmentation fault problem while running my executable. Examination of the core file gives the information:

Can't read pathname for load map: Input/output error

Reading symbols from /usr/lib/libcxcore.so.1...done.
Loaded symbols for /usr/lib/libcxcore.so.1
Reading symbols from /usr/lib/libcv.so.1...done.
Loaded symbols for /usr/lib/libcv.so.1
Reading symbols from /usr/lib/libhighgui.so.1...done.
Loaded symbols for /usr/lib/libhighgui.so.1
Reading symbols from /usr/lib/libcvaux.so.1...done.
Loaded symbols for /usr/lib/libcvaux.so.1
Reading symbols from /usr/lib/libml.so.1...done.
Loaded symbols for /usr/lib/libml.so.1
Reading symbols from /usr/lib/libgtk-1.2.so.0...done.
Loaded symbols for /usr/lib/libgtk-1.2.so.0
Reading symbols from /usr/lib/libgdk-1.2.so.0...done.
Loaded symbols for /usr/lib/libgdk-1.2.so.0
Reading symbols from /usr/lib/libgmodule-1.2.so.0...done.
Loaded symbols for /usr/lib/libgmodule-1.2.so.0
Reading symbols from /usr/lib/libglib-1.2.so.0...done.
Loaded symbols for /usr/lib/libglib-1.2.so.0
Reading symbols from /lib/tls/i686/cmov/libdl.so.2...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libdl-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libdl.so.2
Reading symbols from /usr/lib/libXi.so.6...done.
Loaded symbols for /usr/lib/libXi.so.6
Reading symbols from /usr/lib/libXext.so.6...done.
Loaded symbols for /usr/lib/libXext.so.6
Reading symbols from /usr/lib/libX11.so.6...done.
Loaded symbols for /usr/lib/libX11.so.6
Reading symbols from /lib/tls/i686/cmov/libm.so.6...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libm-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libm.so.6
Reading symbols from /lib/tls/i686/cmov/libc.so.6...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libc-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libc.so.6
Reading symbols from /usr/lib/libstdc++.so.6...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /usr/lib/libgomp.so.1...done.
Loaded symbols for /usr/lib/libgomp.so.1
Reading symbols from /lib/tls/i686/cmov/libpthread.so.0...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libpthread-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libpthread.so.0
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /usr/lib/libgthread-2.0.so.0...done.
Loaded symbols for /usr/lib/libgthread-2.0.so.0
Reading symbols from /lib/tls/i686/cmov/librt.so.1...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/librt-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/librt.so.1
Reading symbols from /usr/lib/libgtk-x11-2.0.so.0...done.
Loaded symbols for /usr/lib/libgtk-x11-2.0.so.0
Reading symbols from /usr/lib/libgdk-x11-2.0.so.0...done.
Loaded symbols for /usr/lib/libgdk-x11-2.0.so.0
Reading symbols from /usr/lib/libatk-1.0.so.0...done.
Loaded symbols for /usr/lib/libatk-1.0.so.0
Reading symbols from /usr/lib/libpangoft2-1.0.so.0...done.
Loaded symbols for /usr/lib/libpangoft2-1.0.so.0
Reading symbols from /usr/lib/libpangocairo-1.0.so.0...done.
Loaded symbols for /usr/lib/libpangocairo-1.0.so.0
Reading symbols from /usr/lib/libgio-2.0.so.0...done.
Loaded symbols for /usr/lib/libgio-2.0.so.0
Reading symbols from /usr/lib/libcairo.so.2...done.
Loaded symbols for /usr/lib/libcairo.so.2
Reading symbols from /usr/lib/libpango-1.0.so.0...done.
Loaded symbols for /usr/lib/libpango-1.0.so.0
Reading symbols from /usr/lib/libfreetype.so.6...done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /usr/lib/libfontconfig.so.1...done.
Loaded symbols for /usr/lib/libfontconfig.so.1
Reading symbols from /usr/lib/libgdk_pixbuf-2.0.so.0...done.
Loaded symbols for /usr/lib/libgdk_pixbuf-2.0.so.0
Reading symbols from /usr/lib/libgobject-2.0.so.0...done.
Loaded symbols for /usr/lib/libgobject-2.0.so.0
Reading symbols from /usr/lib/libgmodule-2.0.so.0...done.
Loaded symbols for /usr/lib/libgmodule-2.0.so.0
Reading symbols from /usr/lib/libglib-2.0.so.0...done.
Loaded symbols for /usr/lib/libglib-2.0.so.0
Reading symbols from /usr/local/lib/libpng12.so.0...done.
Loaded symbols for /usr/local/lib/libpng12.so.0
Reading symbols from /usr/local/lib/libjpeg.so.62...done.
Loaded symbols for /usr/local/lib/libjpeg.so.62
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libtiff.so.4...done.
Loaded symbols for /usr/lib/libtiff.so.4
Reading symbols from /usr/lib/libjasper.so.1...done.
Loaded symbols for /usr/lib/libjasper.so.1
Reading symbols from /usr/lib/i686/cmov/libavformat.so.52...done.
Loaded symbols for /usr/lib/i686/cmov/libavformat.so.52
Reading symbols from /usr/lib/i686/cmov/libavcodec.so.51...done.
Loaded symbols for /usr/lib/i686/cmov/libavcodec.so.51
Reading symbols from /usr/lib/libraw1394.so.8...done.
Loaded symbols for /usr/lib/libraw1394.so.8
Reading symbols from /usr/lib/libtheora.so.0...done.
Loaded symbols for /usr/lib/libtheora.so.0
Reading symbols from /usr/lib/libvorbisenc.so.2...done.
Loaded symbols for /usr/lib/libvorbisenc.so.2
Reading symbols from /usr/lib/i686/cmov/libavutil.so.49...done.
Loaded symbols for /usr/lib/i686/cmov/libavutil.so.49
Reading symbols from /usr/lib/libvorbis.so.0...done.
Loaded symbols for /usr/lib/libvorbis.so.0
Reading symbols from /usr/lib/libogg.so.0...done.
Loaded symbols for /usr/lib/libogg.so.0
Reading symbols from /lib/ld-linux.so.2...Reading symbols from /usr/lib/debug/lib/ld-2.8.90.so...done.
done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /usr/lib/libXau.so.6...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libxcb-xlib.so.0...done.
Loaded symbols for /usr/lib/libxcb-xlib.so.0
Reading symbols from /usr/lib/libxcb.so.1...done.
Loaded symbols for /usr/lib/libxcb.so.1
Reading symbols from /usr/lib/libXcomposite.so.1...done.
Loaded symbols for /usr/lib/libXcomposite.so.1
Reading symbols from /usr/lib/libXdamage.so.1...done.
Loaded symbols for /usr/lib/libXdamage.so.1
Reading symbols from /usr/lib/libXfixes.so.3...done.
Loaded symbols for /usr/lib/libXfixes.so.3
Reading symbols from /usr/lib/libXrender.so.1...done.
Loaded symbols for /usr/lib/libXrender.so.1
Reading symbols from /usr/lib/libXinerama.so.1...done.
Loaded symbols for /usr/lib/libXinerama.so.1
Reading symbols from /usr/lib/libXrandr.so.2...done.
Loaded symbols for /usr/lib/libXrandr.so.2
Reading symbols from /usr/lib/libXcursor.so.1...done.
Loaded symbols for /usr/lib/libXcursor.so.1
Reading symbols from /lib/libselinux.so.1...done.
Loaded symbols for /lib/libselinux.so.1
Reading symbols from /usr/lib/libpixman-1.so.0...done.
Loaded symbols for /usr/lib/libpixman-1.so.0
Reading symbols from /usr/lib/libxcb-render-util.so.0...done.
Loaded symbols for /usr/lib/libxcb-render-util.so.0
Reading symbols from /usr/lib/libxcb-render.so.0...done.
Loaded symbols for /usr/lib/libxcb-render.so.0
Reading symbols from /usr/lib/libexpat.so.1...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /lib/libpcre.so.3...done.
Loaded symbols for /lib/libpcre.so.3
Reading symbols from /usr/lib/libgsm.so.1...done.
Loaded symbols for /usr/lib/libgsm.so.1
Reading symbols from /usr/lib/libXdmcp.so.6...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /lib/tls/i686/cmov/libnss_compat.so.2...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libnss_compat-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libnss_compat.so.2
Reading symbols from /lib/tls/i686/cmov/libnsl.so.1...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libnsl-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libnsl.so.1
Reading symbols from /lib/tls/i686/cmov/libnss_nis.so.2...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libnss_nis-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libnss_nis.so.2
Reading symbols from /lib/tls/i686/cmov/libnss_files.so.2...Reading symbols from /usr/lib/debug/lib/tls/i686/cmov/libnss_files-2.8.90.so...done.
done.
Loaded symbols for /lib/tls/i686/cmov/libnss_files.so.2
Core was generated by `./helloworld'.
Program terminated with signal 11, Segmentation fault.
[New process 9452]
#0 0xb7028485 in g_type_check_class_cast () from /usr/lib/libgobject-2.0.so.0
(gdb)

How can I solve it? Thanks a lot!

 

 

Ah, my mistake. I have two versions of gtk on my system. I used "gtk-config --cflags --libs', which provides info of gtk-1.2 and results in the previous error. But the error goes away when I use the info provided by "pkg-config --cflags --libs gtk+-2.0'. All I can guess is that the opencv library I am using depends on gtk+-2.0 with new features not present in gtk-1.2.

I think I might accidentally install gtk-1.2 myself and want to uninstall it. How to check if it is not in used by other programs and safe to uninstall? I find that I cannot uninstall them by "sudo apt-get remove gtk-1.2", or "sudo apt-get remove gtk+-1.2", or "sudo apt-get remove gtk1.2". It is hard for me to identify what exactly to uninstall. Even searching synaptics software manager in my ubuntu system, there will be so many software associated with "gtk 1.2", making me uncertain what to remove.

I also noticed the info of gtk-1.2 cannot be retrieved by pkg-config but by gtk-config, something that looks so specific, while gtk+-2.0 only works with pkg-config not with gtk-config. Looks like gtk-1.2 has a file called gtk-config while gtk+- 2.0 gtk+-2.0.pc. Another library libpng can be used in both "libpng-config --cflags --libs" and "pkg-config --cflags --libs libpng". What's the point that things are so different for different libraries and even same library but different versions?

 

from : http://cboard.cprogramming.com/game-programming/111770-segmentation-fault-ith-g_type_check_class_cast-usr-lib-libgobject-2-0-so-0-a.html