scc

 1#!/bin/sh
 2
 3trap 'rm -f $tmp1' EXIT
 4trap 'exit $?' HUP INT TERM
 5
 6tmp1=tmp1.$$
 7
 8$EXEC scc make -f- <<'EOF' > $tmp1 2>&1
 9MACRO = $$(echo hello)
10
11all:
12	@echo MACRO=$(MACRO)
13EOF
14
15diff $tmp1 - <<EOF
16MACRO=hello
17EOF