(only for Debian Squeeze with manually built Wt 3.2.1, Ubuntu Lucid will be latter)

I have tried "g++ 900354.cpp -o 900354 -lwt -lwthttp" -- the same result:

/usr/bin/ld: /tmp/ccB6Voar.o: undefined reference to symbol 'boost::signals::trackable::~trackable()'                          
/usr/bin/ld: note: 'boost::signals::trackable::~trackable()' is defined in DSO /usr/lib/libboost_signals.so.1.42.0 so try adding it to the linker command line                                                                                                
/usr/lib/libboost_signals.so.1.42.0: could not read symbols: Invalid operation                                                 
collect2: ld returned 1 exit status                                                                                            

objdump -x /usr/lib/libwt.so
 NEEDED               libboost_thread.so.1.42.0                    
 NEEDED               libboost_regex.so.1.42.0                     
 NEEDED               libboost_signals.so.1.42.0                   
 NEEDED               libboost_system.so.1.42.0                    
 NEEDED               libboost_date_time.so.1.42.0                 
 NEEDED               libssl.so.0.9.8                              
 NEEDED               libcrypto.so.0.9.8                           
 NEEDED               libGraphicsMagick.so.3                       
 NEEDED               libpangoft2-1.0.so.0                         
 NEEDED               libpango-1.0.so.0                            
 NEEDED               libgobject-2.0.so.0                          
 NEEDED               libglib-2.0.so.0                             
 NEEDED               libpthread.so.0                              
 NEEDED               libstdc++.so.6                               
 NEEDED               libm.so.6                                    
 NEEDED               libgcc_s.so.1                                
 NEEDED               libc.so.6                                    

objdump -x /usr/lib/libwthttp.so
  NEEDED               libwt.so.31                                
  NEEDED               libz.so.1                                  
  NEEDED               libssl.so.0.9.8                            
  NEEDED               libcrypto.so.0.9.8                         
  NEEDED               libboost_thread.so.1.42.0                  
  NEEDED               libboost_filesystem.so.1.42.0              
  NEEDED               libboost_program_options.so.1.42.0         
  NEEDED               libboost_date_time.so.1.42.0               
  NEEDED               libpthread.so.0                            
  NEEDED               libboost_regex.so.1.42.0                   
  NEEDED               libboost_signals.so.1.42.0                 
  NEEDED               libboost_system.so.1.42.0                  
  NEEDED               libGraphicsMagick.so.3                     
  NEEDED               libpangoft2-1.0.so.0                       
  NEEDED               libpango-1.0.so.0                          
  NEEDED               libgobject-2.0.so.0                        
  NEEDED               libglib-2.0.so.0                           
  NEEDED               libstdc++.so.6                             
  NEEDED               libm.so.6                                  
  NEEDED               libgcc_s.so.1                              
  NEEDED               libc.so.6                                  


g++ -v

Using built-in specs.                                                                                                          
Target: i486-linux-gnu                                                                                                         
Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.6-14' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bug
s --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-linker-build-id --
with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c+
+/4.4 --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-targets=all --with
-arch-32=i586 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gn
u                                                                                                                              
Thread model: posix                                                                                                            
gcc version 4.4.6 (Debian 4.4.6-14)