I’d like to propose that, in the “configure” script, the 1 (one) line:
$GVIZ ${GVIZ:+$GVIZ/include} \
is changed into:
$GVIZ ${GVIZ:+$GVIZ/include/graphviz} ${GVIZ:+$GVIZ/include} \
and all lines (5 / five or 6 / six):
$GVIZ ${GVIZ:+$GVIZ/lib} ${GVIZ:+$GVIZ/.libs} \
are changed into:
$GVIZ ${GVIZ:+$GVIZ/lib/graphviz} ${GVIZ:+$GVIZ/lib} ${GVIZ:+$GVIZ/.libs} \
(I assume the reasons for these changes are pretty obvious and need no special explanation.)