mbol in the entry function <TT>ave</TT>.
Compile this program by <TT>'cc -c -Dsun4 -DSolaris2 -K pic'</TT>.
<TT>-Dsun4</TT> and <TT>-DSolaris2</TT> are needed
to chose proper definitions in <TT>c/eus.h</TT>.
<TT>-K pic</TT> is needed to let the c compiler generate position independent
code necessary for the loadable shared object. 
Then the resulted '.o' file can be loaded into EusLisp.
More complete examples can be found in <TT>*eusdir*/clib/*.c</TT>,
which are defined and loaded in the same manner describ