m4_if(m4_quote($2), [0], [], m4_quote($2), [], [],
[[VALGRIND_OPTS="$VALGRIND_OPTS --leak-check=summary --show-reachable=no"; export VALGRIND_OPTS; ]]))$@)])
m4_if(m4_quote($2), [0], [], m4_quote($2), [], [],
[[VALGRIND_OPTS="$VALGRIND_OPTS --leak-check=summary --show-reachable=no"; export VALGRIND_OPTS; ]]))$@)])