--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mk/testsubdir-rules.sh	Sat Dec 22 17:52:45 2007 -0500
@@ -0,0 +1,49 @@
+#!/bin/sh
+# testsubdir-rules.sh - generate make rules for testsubdir.mk
+# usage: testsubdir-rules.sh "subdirs" > rules.mk
+
+if [ $# != 1 ]; then
+    echo "$0: usage: $0 'subdirs'" 1>&2
+    exit 1
+fi
+
+SUBDIRS="$1"
+
+echo "$SUBDIRS" | tr ' ' '\n' | awk '
+    { dirs[++ndirs] = $1; }
+    END {
+	printf "all:\n";
+	for (i=1;i<=ndirs;i++) dodir("run-tests", 1, dirs[i]);
+	for (i=1;i<=ndirs;i++) dodir("show-diffs", 1, dirs[i]);
+	simpletarget("show-diffs", "", 0);
+	simpletarget("run-tests", "", 1);
+	simpletarget("rules", "-subdirs", 1);
+	simpletarget("clean", "-subdirs", 1);
+	simpletarget("distclean", "-subdirs", 1);
+    }
+    function simpletarget(target, suffix, show) {
+	printf "%s%s:\n", target, suffix;
+	for (i=1;i<=ndirs;i++) dodir(target, show, dirs[i]);
+    }
+    function dodir(target, show, dir) {
+	if (show) {
+	    printf "\t@echo \"%s ===> $(_SUBDIR_)%s\"\n", target, dir;
+	}
+	printf "\t@cd %s && $(MAKE) %s", dir, target;
+	printf " _SUBDIR_=$(_SUBDIR_)%s/\n", dir;
+    }
+'
+
+echo ".PHONY: all run-tests show-diffs"
+echo ".PHONY: rules-subdirs clean-subdirs distclean-subdirs"
+
+echo 'distclean-here:'
+for D in $SUBDIRS; do
+    echo $D | awk '
+	{
+	    printf "\t@echo \"        [RMDIR]   %s\"\n", $1;
+	    printf "\t@-rm -f %s/Makefile %s/rules.mk %s/depend.mk\n",$1,$1,$1;
+	    printf "\t@-rmdir %s\n", $1;
+	}
+    '
+done