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[jduriez <jerome.duriez@xxxxxxxxxxxxxxx>]

I understand, but would you have an advice to give me to have some 
information more ?

Before that, I can precise that I installed all the packages adviced 
here : 
https://yade-dem.org/wiki/Installation_of_yade_on_debian_or_kubuntu (§ 
Latest development version from sources). And that I compiled also with 
qt4 feature, which gives the segmentation fault.
Debug version does not give me any information more, as already stated. 
I tried with gdb directly (first steps for me with gdb), but launch does 
not happen in this case :
jduriez@c1solimara-l:~/YADEdeb/bin$ gdb yade--debug
GNU gdb (GDB) 7.1-ubuntu
....
"/home/3S-LAB/jduriez/YADEdeb/bin/yade--debug": not in executable 
format: Format de fichier non reconnu
(gdb)

Emmanuele told me about "valgrind", do you advice it ? (first attempt 
gave me hundreds of lines before this "Segmentation fault")

-- 
Yade-qt4 does not launch
https://bugs.launchpad.net/bugs/640401
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Status in Yet Another Dynamic Engine: Incomplete

Bug description:
Since updates executed on 15/09/10, (from a long-time non updated state), I can not launch yade with qt4.

If I compile with 

PREFIX = '/home/3S-LAB/jduriez/YADE'
exclude = 'none'
features = 'gts,log4cxx,opengl,openmp,qt4,vtk'
version = 'trunk'
CXXFLAGS = []
SHCCFLAGS = ['-fPIC']

I get a segmentation fault at the launch : 
jduriez@c1solimara-l:~/YADE/bin$ ./yade-trunk
Welcome to Yade bzr2438
Erreur de segmentation

Whereas, if I compile with :

PREFIX = '/home/3S-LAB/jduriez/YADE'
exclude = 'none'
features = 'gts,log4cxx,opengl,openmp,vtk'
version = 'trunk'
CXXFLAGS = []
SHCCFLAGS = ['-fPIC']

I have no problem:
jduriez@c1solimara-l:~/YADE/bin$ ./yade-trunk-ssqt4
Welcome to Yade bzr2438
TCP python prompt on localhost:9000, auth cookie `aukesy'
XMLRPC info provider on http://localhost:21000
[[ ^L clears screen, ^U kills line. F8 plot. ]]
Yade [1]:

I'll try to compile on debug mode to have more information (not sure it is possible on my PC)