Change the format of BUILDLINK_ORDER to contain depth information as well,

and add a new helper target and script, "show-buildlink3", that outputs
a listing of the buildlink3.mk files included as well as the depth at
which they are included.

For example, "make show-buildlink3" in fonts/Xft2 displays:

	zlib
	fontconfig
	    iconv
	    zlib
	    freetype2
	    expat
	freetype2
	Xrender
	    renderproto

1 files changed, 23 insertions, 0 deletions

diff --git a/mk/buildlink3/show-buildlink3.sh b/mk/buildlink3/show-buildlink3.sh
new file mode 100644
index 00000000000..1d2255158d2
--- /dev/null
+++ b/mk/buildlink3/show-buildlink3.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+#
+# $NetBSD: show-buildlink3.sh,v 1.1 2006/07/08 23:11:17 jlam Exp $
+#
+# This script is a helper for the show-buildlink3 target and outputs
+# the arguments, each on a new line with any leading "+" signs replaced
+# with four spaces.
+#
+
+while test $# -gt 0; do
+	pkg="$1"
+	pkg="${pkg#+}"
+	prefix=
+	stripped=no
+	while test $stripped = no; do
+		case $pkg in
+		+*)	prefix="    $prefix"; pkg="${pkg#+}"; stripped=no ;;
+		*)	stripped=yes ;;
+		esac
+	done
+	echo "$prefix$pkg"
+	shift
+done