Use C++ in RT-Linux.

I try to run a hello.c (C language)that is an example program coming with
rtlinux and everything work fine but I really want to use C++ instead of
C.

I try to run a hello.cpp that is an example program for C++ that come with
rtlinux. I can compile hello.cpp. after that I do this

[root@ss-sw1 cpp]# insmod rtl_cpp.o
[root@ss-sw1 cpp]# insmod app.o
app.o: unresolved symbol __cxa_pure_virtual
app.o: unresolved symbol __cxa_atexit
app.o:
Hint: You are trying to load a module without a GPL compatible license
      and it has unresolved symbols.  Contact the module supplier for
      assistance, only they can help you.

[root@ss-sw1 cpp]# insmod hello.o
hello.o: unresolved symbol __cxa_pure_virtual
hello.o: unresolved symbol __do_global_ctors_aux
hello.o: unresolved symbol __cxa_atexit
hello.o: unresolved symbol __dso_handle
hello.o: unresolved symbol __do_global_dtors_aux
hello.o:
Hint: You are trying to load a module without a GPL compatible license
      and it has unresolved symbols.  Contact the module supplier for
      assistance, only they can help you.


 How can I use C++  in RT-Linux.
 Thank you very much.

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