Shared libraries: How to share global variaables?

[Naga Raju <raj1234@gmail.com>]

Is it possible to share global variables such that all applications
which use shared libraries can see the changes made to the global
variables by the other applications.

I use gcc and compiled
      gcc -shared -Wl,-soname,xyz.so.1 -o libxyz.so.1.0 -lxyz2  abc.o

Regards,
Nagaraju.