loader issue ?

Peter S. Mazinger ps.m at gmx.net
Tue Jun 6 09:28:38 UTC 2006


On Mon, 5 Jun 2006 jean-marie.verdun at splitted-desktop.org wrote:

> Hi,
> 
> I made some progress porting enlightenment on top of Kdrive server and 
> uClibc library. I am facing at the present time two strange behavior, one 
> meet with Mozilla Firefox and one meet with Eterm. I do believe that both 
> of them are coming from the same place.
> Some symbol are declared unresolved despite that they are declared 
> into opened shared object during program startup.

uClibc's ldso requires that you have DT_NEEDED entry for each lib you need 
for an app.
> 
> Running Eterm I got this error:
> Eterm: can't resolve symbol '__imlib_LoadImage'

eterm needs probably DT_NEEDED for libImlib2.so

> And firefox
> /usr/local/lib/firefox-1.5.0.2/firefox-bin: Can't resolve symbol 
> 'pango_xft_get_font_map'

libpangoxft.so here

> 
> Those symbols are standing respectively into:
> /usr/lib/libImlib2.so
> 
> nm /usr/lib/libImlib2.so | grep __imlib_LoadImage
> return 0001e600 t __imlib_LoadImage
> 
> and libpangoxft-1.0.so into /usr/lib regarding firefox issue.
> 
> Using LD_PRELOAD is a workaround for firefox and I got it running 

better add the missing libs -lImlib2/-lpangoxft at link time to the 
app/lib that is requiring it

> successfully (I can browse Internet web pages), but this hint do not work 
> for the Eterm issue. Imlib is quite complex stuff as the library is used 
> to open image manipulation shared objects to support various format into:
> /usr/lib/imlib2/loaders/
> where ls return
> 
> /usr/lib/imlib2/loaders/ani.so*   /usr/lib/imlib2/loaders/ico.so* 
> /usr/lib/imlib2/loaders/png.so*   /usr/lib/imlib2/loaders/xcf.so*
> /usr/lib/imlib2/loaders/argb.so*  /usr/lib/imlib2/loaders/id3.so* 
> /usr/lib/imlib2/loaders/pnm.so*   /usr/lib/imlib2/loaders/xpm.so*
> /usr/lib/imlib2/loaders/bmp.so*   /usr/lib/imlib2/loaders/jpeg.so* 
> /usr/lib/imlib2/loaders/tga.so*   /usr/lib/imlib2/loaders/zlib.so*
> /usr/lib/imlib2/loaders/bz2.so*   /usr/lib/imlib2/loaders/lbm.so* 
> /usr/lib/imlib2/loaders/tiff.so*
> 
> Each of those object are opened. And after the loader can't resolve 
> symbols standing into the original Imlib2.so file.
> 
> I am using now, the standard 0.9.28 release (migrate from 0.9.27). It is 
> hard for me to manage a test with SVN version. I can provide access to a 

svn will behave the same

Peter

> root fs where my environment stands, or provide any help needed to track 
> down this issue.
> 
> I will continue to try to understand it by producing a simple reproducer, 
> but seems to be quite difficult at the present time.
> 
> If LD_DEBUG set to 1 output is requested I can send it to you !
> 
> Jm
> 
> 

-- 
Peter S. Mazinger <ps dot m at gmx dot net>           ID: 0xA5F059F2
Key fingerprint = 92A4 31E1 56BC 3D5A 2D08  BB6E C389 975E A5F0 59F2




More information about the uClibc mailing list