interfacing c++

Hello Manuel and Bigloo team;

-Is it possible to set g++ as C compiler instead of gcc ?
-Are there some facilities to link scheme and C++ ?

I was able to do some calls to C++, via C , (link done with gcc with addition of the lib stdc++)
but I needed to develop plenty of  C set/get functions wrapped by 'extern C'  that call object fields and methods, 
and translations  objects <-> c-structures: 
-painful.  So I was obliged to limit to weak exchanges.

I 'd like to know if dedicated methods and better solutions exist.
Thanks,
Regards,
Michel