If you are brave you could install the shared libraries in a public place, for instance /usr/local/lib, however this might cause problems with other gcc-compiled programs. A more conservative approach is to put it in a dedicated directory and configure speech_tools to look there.
In either case got to your desired installation directory and do
|unix$ cp GCC_BUILD_DIR/libgcc.so.2.7.2 . unix$ ln -s libgcc.so.2.7.2 libgcc.so unix$ cp LIBG++BUILD_DIR/libstdc++/libstdc++.so.2.7.2 . unix$ ln -s libstdc++.so.2.7.2 libstdc++.so|
If you have chosen to put those libraries in a dedicated directory, say `/foo/bar/gcc_shared_libs', you should add the following line to `speech_tools/config/config'