Problem using libraries

[Mikael De Bie <mikael dot debie at student dot uclouvain dot be>]

Hi everybody,

I'm trying to create a UNO component for openoffice. In this component,
I would use gecode libraries. But I get an error hwen I compile the
whole component whith this class.

Here's the errors I get :

1.
----

If I'm using the -c option, the linking is not done and the component
library loading failes  :

Warning :
g++: -lgecodeint: linker input file unused because linking not done
g++: -lgecodeset: linker input file unused because linking not done
g++: -lgecodeminimodel: linker input file unused because linking not
done
g++: -lgecodekernel: linker input file unused because linking not done
g++: -lgecodesearch: linker input file unused because linking not done

Erreur :
error (CannotRegisterImplementationException): loading component library
failed: scsolver.uno.so


2.
----
If I don't use the -c option, here's the error I get : 
/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../lib/crt1.o: In function
`_start':
(.text+0x18): undefined reference to `main'

But I don't have any main function, since it's a uno component for
openoffice

This is the part of the Makefile to compile the class gecode.cxx :

gecode.o : $(HEADER) $(NUMDIR)/gecode.cxx
/usr/bin/g++ `pkg-config --libs --cflags gecode gecode-minimodel
gecode-search` -DDEBUG -Os -mtune=pentium4 -I../../../source/inc -I.
-DUNX -DGCC -DLINUX -DCPPU_ENV=gcc3 -DHAVE_GCC_VISIBILITY_FEATURE
-DENABLE_SCSOLVER_UNO_ALGORITHM \
-o gecode.o -fPIC -fno-rtti -fno-common -export-dynamic
-fvisibility=hidden -c ../../../source/numeric/gecode.cxx


Have anyone any idea to help me ?

Thanks in advance !

Mikael De Bie