[SOLVED] 32 bit program (xsane) looking for 64 bit library on multilib system

BCarey · 01-04-2015, 04:17 PM

Hello all,

On a Slackware64 14.1 system with multilib installed I removed the 64 bit version of xsane and installed the 32 bit version. It never-the-less looks for the 64 bit version of the libraries of gdk-pixbuf-2.0 and fails with

Code:

(xsane:3345): GdkPixbuf-WARNING **: Error loading XPM image loader: Unable to load image-loading module: /usr/lib64/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-xpm.so: /usr/lib64/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-xpm.so: wrong ELF class: ELFCLASS64

I hacked a solution by removing the 64 bit version of gdk-pixbuf2 and creating symlinks to the 32 bit version of the libraries. But I would still like to understand why the 32 bit version of xsane is looking for the 64 bit version of these libraries.

Can anyone enlighten me?

Thanks,
Brian

BCarey · 01-04-2015, 05:26 PM

So I've learned that a lot of other programs rely on those libraries so my hacked solution is very problematic. Any help with a solution would be greatly appreciated.

Brian

Didier Spaier · 01-04-2015, 10:49 PM

Just to be 101% sure, what says "file /usr/bin/xsane"?

Richard Cranium · 01-05-2015, 01:39 AM

And perhaps you can add the output of

Code:

ldd /usr/bin/xsane

bassmadrigal · 01-05-2015, 07:31 AM

It's probably looking for the library itself and can only find the 64bit version, which it then complains that it is not 32bit. Have you tried converting the 32bit version of that using Eric's script?

Code:

convertpkg-compat32 gdk-pixbuf2-2.28.2-i486-1.txz

You'd likely need to do this for any library that xsane depends on.

BCarey · 01-05-2015, 11:49 AM

Hi guys, thanks for your help.

Output of "file /usr/bin/xsane":

Code:

/usr/bin/xsane: ELF 32-bit LSB  executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), stripped

Output of ldd /usr/bin/xsane:

Code:

linux-gate.so.1 (0xffffe000)
	libsane.so.1 => /usr/lib/libsane.so.1 (0xf774f000)
	libgimpui-2.0.so.0 => /usr/lib/libgimpui-2.0.so.0 (0xf772e000)
	libgimpwidgets-2.0.so.0 => /usr/lib/libgimpwidgets-2.0.so.0 (0xf75fb000)
	libgimpmodule-2.0.so.0 => /usr/lib/libgimpmodule-2.0.so.0 (0xf75f6000)
	libgimp-2.0.so.0 => /usr/lib/libgimp-2.0.so.0 (0xf75b0000)
	libgimpmath-2.0.so.0 => /usr/lib/libgimpmath-2.0.so.0 (0xf75aa000)
	libgimpconfig-2.0.so.0 => /usr/lib/libgimpconfig-2.0.so.0 (0xf759a000)
	libgimpcolor-2.0.so.0 => /usr/lib/libgimpcolor-2.0.so.0 (0xf758d000)
	libgimpbase-2.0.so.0 => /usr/lib/libgimpbase-2.0.so.0 (0xf7576000)
	libgtk-x11-2.0.so.0 => /usr/lib/libgtk-x11-2.0.so.0 (0xf710c000)
	libgdk-x11-2.0.so.0 => /usr/lib/libgdk-x11-2.0.so.0 (0xf705d000)
	libatk-1.0.so.0 => /usr/lib/libatk-1.0.so.0 (0xf703c000)
	libgio-2.0.so.0 => /usr/lib/libgio-2.0.so.0 (0xf6ed5000)
	libpangoft2-1.0.so.0 => /usr/lib/libpangoft2-1.0.so.0 (0xf6ec1000)
	libpangocairo-1.0.so.0 => /usr/lib/libpangocairo-1.0.so.0 (0xf6eb4000)
	libgdk_pixbuf-2.0.so.0 => /usr/lib/libgdk_pixbuf-2.0.so.0 (0xf6e92000)
	libcairo.so.2 => /usr/lib/libcairo.so.2 (0xf6d58000)
	libpango-1.0.so.0 => /usr/lib/libpango-1.0.so.0 (0xf6d0e000)
	libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0xf6c81000)
	libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0xf6c47000)
	libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0xf6bf9000)
	libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0xf6acb000)
	libpng14.so.14 => /usr/lib/libpng14.so.14 (0xf6aa0000)
	liblcms.so.1 => /usr/lib/liblcms.so.1 (0xf6a66000)
	libtiff.so.3 => /usr/lib/libtiff.so.3 (0xf6a02000)
	libjpeg.so.8 => /usr/lib/libjpeg.so.8 (0xf69ca000)
	libz.so.1 => /lib/libz.so.1 (0xf69b4000)
	libm.so.6 => /lib/libm.so.6 (0xf6972000)
	libc.so.6 => /lib/libc.so.6 (0xf67e6000)
	libv4l1.so.0 => /usr/lib/libv4l1.so.0 (0xf67e0000)
	libieee1284.so.3 => /usr/lib/libieee1284.so.3 (0xf67d5000)
	libgphoto2.so.6 => /usr/lib/libgphoto2.so.6 (0xf6754000)
	libgphoto2_port.so.10 => /usr/lib/libgphoto2_port.so.10 (0xf674a000)
	libltdl.so.7 => /usr/lib/libltdl.so.7 (0xf6740000)
	libdl.so.2 => /lib/libdl.so.2 (0xf673b000)
	libexif.so.12 => /usr/lib/libexif.so.12 (0xf6704000)
	libusb-1.0.so.0 => /usr/lib/libusb-1.0.so.0 (0xf66f4000)
	librt.so.1 => /lib/librt.so.1 (0xf66eb000)
	libpthread.so.0 => /lib/libpthread.so.0 (0xf66d1000)
	libcups.so.2 => /usr/lib/libcups.so.2 (0xf668b000)
	libnetsnmp.so.30 => /usr/lib/libnetsnmp.so.30 (0xf65f0000)
	libcrypto.so.1 => /lib/libcrypto.so.1 (0xf6432000)
	libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0xf642f000)
	libgmodule-2.0.so.0 => /usr/lib/libgmodule-2.0.so.0 (0xf642b000)
	libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0xf6428000)
	libXi.so.6 => /usr/lib/libXi.so.6 (0xf6419000)
	libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0xf640e000)
	libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0xf6404000)
	libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0xf6372000)
	libicule.so.51 => /usr/lib/libicule.so.51 (0xf6320000)
	libicuuc.so.51 => /usr/lib/libicuuc.so.51 (0xf61cf000)
	libicudata.so.51 => /usr/lib/libicudata.so.51 (0xf4c83000)
	libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xf4b9b000)
	libXcomposite.so.1 => /usr/lib/libXcomposite.so.1 (0xf4b98000)
	libXdamage.so.1 => /usr/lib/libXdamage.so.1 (0xf4b95000)
	libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0xf4b90000)
	libpixman-1.so.0 => /usr/lib/libpixman-1.so.0 (0xf4b09000)
	libxcb-shm.so.0 => /usr/lib/libxcb-shm.so.0 (0xf4b05000)
	libX11-xcb.so.1 => /usr/lib/libX11-xcb.so.1 (0xf4b03000)
	libxcb-render.so.0 => /usr/lib/libxcb-render.so.0 (0xf4afa000)
	libXrender.so.1 => /usr/lib/libXrender.so.1 (0xf4af0000)
	libXext.so.6 => /usr/lib/libXext.so.6 (0xf4ade000)
	libX11.so.6 => /usr/lib/libX11.so.6 (0xf49a6000)
	libxcb.so.1 => /usr/lib/libxcb.so.1 (0xf4986000)
	libXau.so.6 => /usr/lib/libXau.so.6 (0xf4983000)
	libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0xf497d000)
	libresolv.so.2 => /lib/libresolv.so.2 (0xf4963000)
	libbz2.so.1 => /lib/libbz2.so.1 (0xf4952000)
	libexpat.so.1 => /usr/lib/libexpat.so.1 (0xf492a000)
	libffi.so.6 => /usr/lib/libffi.so.6 (0xf4924000)
	libEGL.so.1 => /usr/lib/libEGL.so.1 (0xf4907000)
	libGL.so.1 => /usr/lib/libGL.so.1 (0xf48a8000)
	/lib/ld-linux.so.2 (0xf77ba000)
	libv4l2.so.0 => /usr/lib/libv4l2.so.0 (0xf489b000)
	libssl.so.1 => /lib/libssl.so.1 (0xf4837000)
	libcrypt.so.1 => /lib/libcrypt.so.1 (0xf4804000)
	libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xf47e8000)
	libxcb-dri2.so.0 => /usr/lib/libxcb-dri2.so.0 (0xf47e2000)
	libxcb-xfixes.so.0 => /usr/lib/libxcb-xfixes.so.0 (0xf47db000)
	libxcb-shape.so.0 => /usr/lib/libxcb-shape.so.0 (0xf47d8000)
	libudev.so.0 => /lib/libudev.so.0 (0xf47c9000)
	libdrm.so.2 => /usr/lib/libdrm.so.2 (0xf47bc000)
	libglapi.so.0 => /usr/lib/libglapi.so.0 (0xf479d000)
	libxcb-glx.so.0 => /usr/lib/libxcb-glx.so.0 (0xf4786000)
	libXxf86vm.so.1 => /usr/lib/libXxf86vm.so.1 (0xf4781000)
	libv4lconvert.so.0 => /usr/lib/libv4lconvert.so.0 (0xf4709000)

I did convert gdk-pixbuf2 with

Code:

convertpkg-compat32 -i gdk-pixbuf2-2.28.2-i486-1.txz

Code:

ls -l /var/log/packages/gdk*
-rw-r--r-- 1 root root 17818 Jan  5 10:38 /var/log/packages/gdk-pixbuf2-2.28.2-x86_64-1
-rw-r--r-- 1 root root  3614 Jan  5 10:38 /var/log/packages/gdk-pixbuf2-compat32-2.28.2-x86_64-1compat32

Thanks,
Brian

bassmadrigal · 01-05-2015, 12:09 PM

You had converted that program before you submitted the first post or after? If it was after, did it change your error? You should now have that file in /usr/lib and /usr/lib64, the first being a 32bit file and the latter, obviously, being a 64bit. If you show a different error, try finding what package that file comes from and then get the 32bit version, convert it to a -compat32, install it, and try again. But looking at the output from ldd, this might be a long process.

BCarey · 01-05-2015, 12:19 PM

I had already converted and installed the compat32 package before the first post. I know it works because if I put a link in the /usr/lib64 directory pointing to the /usr/lib version xsane runs. It's just that not much else runs properly then.

Thanks,
Brian

Richard Cranium · 01-06-2015, 02:51 AM

What does

Code:

set | grep GDK

show? (read the man page for gdk-pixbuf-query-loaders to see why I ask)

What does

Code:

type xsane

show?

BCarey · 01-06-2015, 09:59 AM

Code:

set | grep GDK
GDK_USE_XFT=1

Code:

type xsane
xsane is /usr/bin/xsane

Mysterious, huh?

Thanks,
Brian

Richard Cranium · 01-06-2015, 01:28 PM

Yes, it is. You may have to run strace on the xsane command to figure this out. I'll see if I can think of something when I'm off work.

Richard Cranium · 01-07-2015, 08:34 AM

Aha!

What does

Code:

ls -l /usr/bin/gdk-pixbuf-query-loaders

show?

I bet that it's pointing to the 64 bit version.

BCarey · 01-07-2015, 09:39 AM

Indeed it is:

Code:

ls -l /usr/bin/gdk-pixbuf-query-loaders
lrwxrwxrwx 1 root root 27 Jan  5 10:38 /usr/bin/gdk-pixbuf-query-loaders -> gdk-pixbuf-query-loaders-64*

BCarey · 01-07-2015, 07:46 PM

I'm not sure what to do with this information though.

Richard Cranium · 01-07-2015, 07:50 PM

I'm not positive what's going on, but the command

Code:

strings /usr/lib64/libgdk_pixbuf-2.0.so.0.2800.2 | grep query

returns

Quote:

gdk-pixbuf-query-loaders > %s

(I've got a pure 64 bit system, so I can't replicate what you're going through.) It appears that the shared library will attempt to locate the loaders via running gdk-pixbuf-query-loaders. (Yeah, I could look at the code but I'm too lazy to do so.)

Do you see 64 bit paths in (I'm guessing) /usr/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache?

Your best bet may be to write your own script to call xsane that sets GDK_PIXBUF_MODULEDIR to /usr/lib/gdk-pixbuf-2.0/2.10.0/loaders prior to running /usr/bin/xsane. I don't even know if that would work; it could cause the loader.cache file in the 32 bit directory to be overwritten with the 64 bit information.