Failed to load Dynamic link library (undefined symbol)

Dear ROOTers,

I'm getting the "Failed to load Dynamic link library (undefined symbol)" error for a compiled library which contains seems to be the simplest object inherited from TObject (I've started with a usable object :) ). Probably there is a stupid error in the code, but I couldn't find it. Could you help me, please? Files are in the attachment and ROOT session transcript is below.

Regards,

Vassili

• The ROOT session transcript -----------

[vmarouss_at_Ezhik-HDX18 Test2]$
[vmarouss_at_Ezhik-HDX18 Test2]$ uname -a
Linux Ezhik-HDX18 2.6.35.14-96.fc14.x86_64 #1 SMP Thu Sep 1 11:59:56 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
[vmarouss_at_Ezhik-HDX18 Test2]$
[vmarouss_at_Ezhik-HDX18 Test2]$ ls -l
total 16
-rw-r--r--. 1 vmarouss kr 1325 Sep 27 16:15 Makefile
-rw-r--r--. 1 vmarouss kr 79 Sep 27 15:56 MyObj.cpp
-rw-r--r--. 1 vmarouss kr 545 Sep 27 16:07 MyObj.h
-rw-r--r--. 1 vmarouss kr 150 Sep 27 15:56 MyObjLinkDef.h
[vmarouss_at_Ezhik-HDX18 Test2]$
[vmarouss_at_Ezhik-HDX18 Test2]$ make
g++ -O2 -Wall -fPIC -pthread -m64 -I/usr/local/ROOT/pro/include -c MyObj.cpp Generating dictionary MyObjDict.cpp...
MyObjDict.cpp done
g++ -O2 -Wall -fPIC -pthread -m64 -I/usr/local/ROOT/pro/include -c MyObjDict.cpp
g++ -shared -O2 -Wall -fPIC -pthread -m64 -I/usr/local/ROOT/pro/include MyObj.o MyObjDict.o -L/usr/local/ROOT/pro/lib -lCore -lCint -lRIO -lNet
-lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix
-lPhysics -lMathCore -lThread -pthread -lm -ldl -rdynamic -o libMyObj.so
libMyObj.so done
[vmarouss_at_Ezhik-HDX18 Test2]$
[vmarouss_at_Ezhik-HDX18 Test2]$ ls -l
total 132
-rwxr-xr-x. 1 vmarouss kr 39260 Sep 27 16:20 libMyObj.so
-rw-r--r--. 1 vmarouss kr 1325 Sep 27 16:15 Makefile
-rw-r--r--. 1 vmarouss kr 79 Sep 27 15:56 MyObj.cpp
-rw-r--r--. 1 vmarouss kr 25064 Sep 27 16:20 MyObjDict.cpp
-rw-r--r--. 1 vmarouss kr 1987 Sep 27 16:20 MyObjDict.h
-rw-r--r--. 1 vmarouss kr 37344 Sep 27 16:20 MyObjDict.o
-rw-r--r--. 1 vmarouss kr 545 Sep 27 16:07 MyObj.h
-rw-r--r--. 1 vmarouss kr 150 Sep 27 15:56 MyObjLinkDef.h
-rw-r--r--. 1 vmarouss kr 2272 Sep 27 16:20 MyObj.o
[vmarouss_at_Ezhik-HDX18 Test2]$
[vmarouss_at_Ezhik-HDX18 Test2]$ env | grep LD OLDPWD=/home/vmarouss/ROOTFLUKA64
LD_LIBRARY_PATH=/usr/local/ROOT/pro/lib:/usr/lib64/alliance/lib:. [vmarouss_at_Ezhik-HDX18 Test2]$
[vmarouss_at_Ezhik-HDX18 Test2]$ root

• *
• W E L C O M E to R O O T *
• *
• Version 5.28/00b 14 March 2011 *
• *
• You are welcome to visit our Web site *
• http://root.cern.ch *
• *

  ---

ROOT 5.28/00b (branches/v5-28-00-patches_at_38394, Apr 14 2011, 17:55:00 on linuxx8664gcc)

CINT/ROOT C/C++ Interpreter version 5.18.00, July 2, 2010 Type ? for help. Commands must be C++ statements. Enclose multiple statements between { }. root [0] gSystem->Load("libMyObj")
dlopen error: /home/vmarouss/ROOTFLUKA64/Test2/./libMyObj.so: undefined symbol: _ZTV5MyObj
Load Error: Failed to load Dynamic link library /home/vmarouss/ROOTFLUKA64/Test2/./libMyObj.so (int)(-1)
root [1] .q
[vmarouss_at_Ezhik-HDX18 Test2]$