scc

 1#!/bin/sh
 2
 3trap 'rm -f $tmp1 t? t' EXIT
 4trap 'exit $?' HUP INT TERM
 5
 6tmp1=tmp1.$$
 7
 8$EXEC scc make -f- <<'EOF' > $tmp1 2>&1
 9all: t1 t2
10
11t1 t2: t
12t1 t2 t:
13	touch $@
14EOF
15
16diff $tmp1 - <<EOF
17touch t
18touch t1
19touch t2
20EOF