Sync with upstream version (20130520) that includes same fixes made last week.

10 files changed, 281 insertions, 53 deletions

diff --git a/contrib/bmake/mk/ChangeLog b/contrib/bmake/mk/ChangeLog
index 0f49477..32e064b 100644
--- a/contrib/bmake/mk/ChangeLog
+++ b/contrib/bmake/mk/ChangeLog
@@ -1,3 +1,23 @@
+2013-05-10  Simon J. Gerraty  <sjg@bad.crufty.net>
+
+	* install-mk (MK_VERSION): 20130505
+	* gendirdeps.mk, meta2deps.py, meta2deps.sh: handle $TARGET_SPEC
+	  for when $MACHINE isn't enough for objdir distinction.
+	  Bring meta2deps.sh closer to par with meta2deps.py.
+
+2013-04-18  Simon J. Gerraty  <sjg@bad.crufty.net>
+
+	* meta.stage.mk: set INSTALL to STAGE_INSTALL when making 'all'
+	  also if the target 'beforeinstall' exists, make it depend on
+	  .dirdep (incase it uses STAGE_INSTALL).
+
+2013-04-17  Simon J. Gerraty  <sjg@bad.crufty.net>
+
+	* install-mk (MK_VERSION): 20130401 ;-)
+	* meta.stage.mk (STAGE_INSTALL_SH): add stage-install.sh as
+	  wrapper around install(1).
+	* options.mk (OPTION_PREFIX): Allow a prefix other than MK_
+
 2013-03-30  Simon J. Gerraty  <sjg@bad.crufty.net>
 
 	* meta2deps.py (MetaFile.__init__): ensure self.cwd is initialized.
diff --git a/contrib/bmake/mk/FILES b/contrib/bmake/mk/FILES
index 7a2bf29..443aa2e 100644
--- a/contrib/bmake/mk/FILES
+++ b/contrib/bmake/mk/FILES
@@ -31,6 +31,7 @@ progs.mk
 rst2htm.mk
 scripts.mk
 srctop.mk
+stage-install.sh
 subdir.mk
 sys.mk
 sys.clean-env.mk
diff --git a/contrib/bmake/mk/gendirdeps.mk b/contrib/bmake/mk/gendirdeps.mk
index 5742c6f..9be3673 100644
--- a/contrib/bmake/mk/gendirdeps.mk
+++ b/contrib/bmake/mk/gendirdeps.mk
@@ -1,4 +1,4 @@
-# $Id: gendirdeps.mk,v 1.21 2013/03/28 20:01:05 sjg Exp $
+# $Id: gendirdeps.mk,v 1.22 2013/05/11 05:16:26 sjg Exp $
 
 # Copyright (c) 2010-2013, Juniper Networks, Inc.
 # All rights reserved.
@@ -111,13 +111,24 @@ _py_d =
 .if ${META2DEPS:E} == "py"
 # we can afford to do this all the time.
 DPDEPS ?= no
-META2DEPS_CMD = ${_time} ${PYTHON} ${META2DEPS} ${_py_d} \
-	-R ${RELDIR} -H ${HOST_TARGET} \
-	${M2D_OBJROOTS:O:u:@o@-O $o@}
-
+META2DEPS_CMD = ${_time} ${PYTHON} ${META2DEPS} ${_py_d} 
 .if ${DPDEPS:tl} != "no"
 META2DEPS_CMD += -D ${DPDEPS}
 .endif
+META2DEPS_FILTER = sed 's,^src:,${SRCTOP}/,;s,^\([^/]\),${OBJTOP}/\1,' |
+.elif ${META2DEPS:E} == "sh"
+META2DEPS_CMD = ${_time} ${_sh_x} ${META2DEPS} OBJTOP=${_OBJTOP}
+.else
+META2DEPS_CMD ?= ${META2DEPS}
+.endif
+
+.if ${TARGET_OBJ_SPEC:U${MACHINE}} != ${MACHINE}
+META2DEPS_CMD += -T ${TARGET_OBJ_SPEC}
+.endif
+META2DEPS_CMD += \
+	-R ${RELDIR} -H ${HOST_TARGET} \
+	${M2D_OBJROOTS:O:u:@o@-O $o@}
+
 
 M2D_OBJROOTS += ${OBJTOP} ${_OBJROOT} ${_objroot}
 .if defined(SB_OBJROOT)
@@ -133,13 +144,6 @@ META2DEPS_ARGS += MACHINE=none
 META2DEPS_CMD += -S ${SB_BACKING_SB}/src 
 M2D_OBJROOTS += ${SB_BACKING_SB}/${SB_OBJPREFIX}
 .endif
-META2DEPS_FILTER = sed 's,^src:,${SRCTOP}/,;s,^\([^/]\),${OBJTOP}/\1,' |
-.elif ${META2DEPS:E} == "sh"
-META2DEPS_CMD = ${_time} ${_sh_x} ${META2DEPS} \
-	OBJTOP=${_objtop} SB_OBJROOT=${_objroot}
-.else
-META2DEPS_CMD ?= ${META2DEPS}
-.endif
 
 # we are only interested in the dirs
 # sepecifically those we read something from.
diff --git a/contrib/bmake/mk/install-mk b/contrib/bmake/mk/install-mk
index c45c6ca..da15d80 100644
--- a/contrib/bmake/mk/install-mk
+++ b/contrib/bmake/mk/install-mk
@@ -55,7 +55,7 @@
 #       Simon J. Gerraty <sjg@crufty.net>
 
 # RCSid:
-#	$Id: install-mk,v 1.88 2013/03/31 22:31:59 sjg Exp $
+#	$Id: install-mk,v 1.90 2013/05/11 05:16:26 sjg Exp $
 #
 #	@(#) Copyright (c) 1994 Simon J. Gerraty
 #
@@ -70,7 +70,7 @@
 #	sjg@crufty.net
 #
 
-MK_VERSION=20130330
+MK_VERSION=20130505
 OWNER=
 GROUP=
 MODE=444
diff --git a/contrib/bmake/mk/meta.stage.mk b/contrib/bmake/mk/meta.stage.mk
index 0faeef3..2f02700 100644
--- a/contrib/bmake/mk/meta.stage.mk
+++ b/contrib/bmake/mk/meta.stage.mk
@@ -1,4 +1,4 @@
-# $Id: meta.stage.mk,v 1.24 2013/03/23 02:25:19 sjg Exp $
+# $Id: meta.stage.mk,v 1.30 2013/04/19 16:32:57 sjg Exp $
 #
 #	@(#) Copyright (c) 2011, Simon J. Gerraty
 #
@@ -228,4 +228,17 @@ STAGING_WAIT ?= .WAIT
 
 all: ${STAGING_WAIT} staging
 
+.if exists(${.PARSEDIR}/stage-install.sh) && !defined(STAGE_INSTALL)
+# this will run install(1) and then followup with .dirdep files.
+STAGE_INSTALL := sh ${.PARSEDIR:tA}/stage-install.sh INSTALL="${INSTALL}" OBJDIR=${.OBJDIR:tA}
+.endif
+
+# if ${INSTALL} gets run during 'all' assume it is for staging?
+.if ${.TARGETS:Nall} == "" && defined(STAGE_INSTALL)
+INSTALL := ${STAGE_INSTALL}
+.if target(beforeinstall)
+beforeinstall: .dirdep
+.endif
+.endif
+
 .endif
diff --git a/contrib/bmake/mk/meta2deps.py b/contrib/bmake/mk/meta2deps.py
index 6b6157c..8c42303 100755
--- a/contrib/bmake/mk/meta2deps.py
+++ b/contrib/bmake/mk/meta2deps.py
@@ -35,7 +35,7 @@ We only pay attention to a subset of the information in the
 
 """
 RCSid:
-	$Id: meta2deps.py,v 1.12 2013/03/31 22:31:59 sjg Exp $
+	$Id: meta2deps.py,v 1.13 2013/05/11 05:16:26 sjg Exp $
 
 	Copyright (c) 2011-2013, Juniper Networks, Inc.
 	All rights reserved.
@@ -124,6 +124,12 @@ def sort_unique(list, cmp=None, key=None, reverse=False):
         nl.append(e)
     return nl
 
+def add_trims(x):
+    return ['/' + x + '/',
+            '/' + x, 
+            x + '/',
+            x]
+
 class MetaFile:
     """class to parse meta files generated by bmake."""
 
@@ -152,6 +158,9 @@ class MetaFile:
         	set to 'none' if we are not cross-building.
 		More specifically if machine cannot be deduced from objdirs.
 
+        TARGET_SPEC
+        	Sometimes MACHINE isn't enough.
+                
         HOST_TARGET
 		when we build for the psuedo machine 'host'
 		the object tree uses HOST_TARGET rather than MACHINE.
@@ -177,6 +186,8 @@ class MetaFile:
         self.debug_out = getv(conf, 'debug_out', sys.stderr)
 
         self.machine = getv(conf, 'MACHINE', '')
+        self.machine_arch = getv(conf, 'MACHINE_ARCH', '')
+        self.target_spec = getv(conf, 'TARGET_SPEC', '')
         self.curdir = getv(conf, 'CURDIR')
         self.reldir = getv(conf, 'RELDIR')
         self.dpdeps = getv(conf, 'DPDEPS')
@@ -196,16 +207,11 @@ class MetaFile:
                 if not _srctop in self.srctops:
                     self.srctops.append(_srctop)
 
-            trim_list = ['/' + self.machine + '/',
-                         '/' + self.machine, 
-                         self.machine + '/',
-                         self.machine]
-
+            trim_list = add_trims(self.machine)
             if self.machine == 'host':
-                trim_list += ['/' + self.host_target + '/',
-                              '/' + self.host_target,
-                              self.host_target + '/',
-                              self.host_target]
+                trim_list += add_trims(self.host_target)
+            if self.target_spec:
+                trim_list += add_trims(self.target_spec)
 
             for objroot in getv(conf, 'OBJROOTS', []):
                 for e in trim_list:
@@ -303,6 +309,8 @@ class MetaFile:
                     print >> self.debug_out, "found %s: %s\n" % (ddepf, ddep)
                 if ddep.endswith(self.machine):
                     ddep = ddep[0:-(1+len(self.machine))]
+                elif self.target_spec and ddep.endswith(self.target_spec):
+                    ddep = ddep[0:-(1+len(self.target_spec))]
 
         if not ddep:
             # no .dirdeps, so remember that we've seen the raw input
@@ -520,6 +528,8 @@ def main(argv, klass=MetaFile, xopts='', xoptf=None):
 
     -m "MACHINE"
 
+    -a "MACHINE_ARCH"
+
     -H "HOST_TARGET"
 
     -D "DPDEPS"
@@ -548,6 +558,9 @@ def main(argv, klass=MetaFile, xopts='', xoptf=None):
         machine = os.environ['MACHINE']
         if machine:
             conf['MACHINE'] = machine
+        machine_arch = os.environ['MACHINE_ARCH']
+        if machine_arch:
+            conf['MACHINE_ARCH'] = machine_arch
         srctop = os.environ['SB_SRC']
         if srctop:
             conf['SRCTOPS'].append(srctop)
@@ -560,9 +573,11 @@ def main(argv, klass=MetaFile, xopts='', xoptf=None):
     debug = 0
     output = True
     
-    opts, args = getopt.getopt(argv[1:], 'dS:C:O:R:m:D:H:q' + xopts)
+    opts, args = getopt.getopt(argv[1:], 'a:dS:C:O:R:m:D:H:qT:' + xopts)
     for o, a in opts:
-        if o == '-d':
+        if o == '-a':
+            conf['MACHINE_ARCH'] = a
+        elif o == '-d':
             debug += 1
         elif o == '-q':
             output = False
@@ -582,6 +597,8 @@ def main(argv, klass=MetaFile, xopts='', xoptf=None):
             conf['DPDEPS'] = a
         elif o == '-m':
             conf['MACHINE'] = a
+        elif o == '-T':
+            conf['TARGET_SPEC'] = a
         elif xoptf:
             xoptf(o, a, conf)
 
diff --git a/contrib/bmake/mk/meta2deps.sh b/contrib/bmake/mk/meta2deps.sh
index 9c76b77..f63aee3 100755
--- a/contrib/bmake/mk/meta2deps.sh
+++ b/contrib/bmake/mk/meta2deps.sh
@@ -49,8 +49,8 @@
 #	The output, is a set of absolute paths with "SB" like:
 #.nf
 #
-#	$SB/obj-i386/junos/gnu/lib/csu
-#	$SB/obj-i386/junos/gnu/lib/libgcc
+#	$SB/obj-i386/bsd/gnu/lib/csu
+#	$SB/obj-i386/bsd/gnu/lib/libgcc
 #	$SB/obj-i386/bsd/include
 #	$SB/obj-i386/bsd/lib/csu/i386-elf
 #	$SB/obj-i386/bsd/lib/libc
@@ -77,9 +77,9 @@
 
 
 # RCSid:
-#	$Id: meta2deps.sh,v 1.5 2013/02/10 19:21:46 sjg Exp $
+#	$Id: meta2deps.sh,v 1.6 2013/05/11 05:16:26 sjg Exp $
 
-# Copyright (c) 2010-2012, Juniper Networks, Inc.
+# Copyright (c) 2010-2013, Juniper Networks, Inc.
 # All rights reserved.
 # 
 # Redistribution and use in source and binary forms, with or without
@@ -115,16 +115,89 @@ meta2dirs() {
     sort -u
 }
 
+add_list() {
+    sep=' '
+    suffix=
+    while :
+    do
+	case "$1" in
+	"|") sep="$1"; shift;;
+	-s) suffix="$2"; shift 2;;
+	*) break;;
+	esac
+    done
+    name=$1
+    shift
+    eval list="\$$name"
+    for top in "$@"
+    do
+	case "$sep$list$sep" in
+	*"$sep$top$suffix$sep"*) continue;;
+	esac
+	list="${list:+$list$sep}$top$suffix"
+    done
+    eval "$name=\"$list\""
+}
+
 meta2deps() {
     DPDEPS=
+    SRCTOPS=$SRCTOP
+    OBJROOTS=
     while :
     do
 	case "$1" in
 	*=*) eval export "$1"; shift;;
+	-a) MACHINE_ARCH=$2; shift 2;;
+	-m) MACHINE=$2; shift 2;;
+	-C) CURDIR=$2; shift 2;;
+	-H) HOST_TARGET=$2; shift 2;;
+	-S) add_list SRCTOPS $2; shift 2;;
+	-O) add_list OBJROOTS $2; shift 2;;
+	-R) RELDIR=$2; shift 2;;
+	-T) TARGET_SPEC=$2; shift 2;;
 	*) break;;
 	esac
     done
 
+    _th= _o=
+    case "$MACHINE" in
+    host) _ht=$HOST_TARGET;;
+    esac
+    
+    for o in $OBJROOTS
+    do
+	case "$MACHINE,/$o/" in
+	host,*$HOST_TARGET*) ;;
+	*$MACHINE*|*${TARGET_SPEC:-$MACHINE}*) ;;
+	*) add_list _o $o; continue;;
+	esac
+	for x in $_ht $TARGET_SPEC $MACHINE
+	do
+	    case "$o" in
+	    "") continue;;
+	    */$x/) add_list _o ${o%$x/}; o=;;
+	    */$x) add_list _o ${o%$x}; o=;;
+	    *$x/) add_list _o ${o%$x/}; o=;;
+	    *$x) add_list _o ${o%$x}; o=;;
+	    esac
+	done
+    done
+    OBJROOTS="$_o"
+
+    case "$OBJTOP" in
+    "")
+	for o in $OBJROOTS
+	do
+	    OBJTOP=$o${TARGET_SPEC:-$MACHINE}
+	    break
+	done
+	;;
+    esac
+    src_re=
+    obj_re=
+    add_list '|' -s '/*' src_re $SRCTOPS
+    add_list '|' -s '*' obj_re $OBJROOTS
+    
     [ -z "$RELDIR" ] && unset DPDEPS
     tf=/tmp/m2d$$-$USER
     rm -f $tf.*
@@ -166,8 +239,7 @@ meta2deps() {
 	esac
 
 	case "$op,$path" in
-	*.dirdep)  continue;;
-	W,*srcrel) continue;;
+	W,*srcrel|*.dirdep) continue;;
 	C,*)
 	    case "$path" in
 	    /*) cwd=$path;;
@@ -182,8 +254,7 @@ meta2deps() {
 	    ;;	  
 	*)  dir=${path%/*}
 	    case "$path" in
-	    $SB/*|${SB_BACKING_SB:-$SB}/*) ;;
-	    $SB_OBJROOT*) ;;
+	    $src_re|$obj_re) ;;
 	    /*/stage/*) ;;
 	    /*) continue;;
 	    *)	for path in $ldir/$path $cwd/$path
@@ -215,7 +286,7 @@ meta2deps() {
 	esac
 	case "$dir" in
 	${CURDIR:-.}|${CURDIR:-.}/*|"") continue;;
-	$SRCTOP/*|${SB_BACKING_SB:-$SB}/src/*)
+	$src_re)
 	    # avoid repeating ourselves...
 	    case "$DPDEPS,$seensrc," in
 	    ,*)
@@ -241,7 +312,7 @@ meta2deps() {
 	[ -f $path ] || continue
 	case "$dir" in
 	$CWD) continue;;		# ignore
-	$SRCTOP/*|${SB_BACKING_SB:-$SB}/src/*)
+	$src_re)
 	    seenit="$seenit,$seen"
 	    echo $dir >> $tf.srcdep
 	    case "$DPDEPS,$reldir,$seensrc," in
@@ -267,7 +338,7 @@ meta2deps() {
 	fi
 	seenit="$seenit,$seen"
 	case "$dir" in
-	$SB/*|${SB_OBJROOT:-$SB/}*|${SB_BACKING_SB:-$SB}/*)
+	$obj_re)
 	    echo $dir;;
 	esac
     done > $tf.dirdep
@@ -283,7 +354,7 @@ meta2deps() {
 	    # qualified with .<machine> as needed.
 	    # We strip .$MACHINE though
 	    xargs cat < $f | sort -u |
-	    sed "s,^# ,,;s,^,$OBJTOP/,;s,\.$MACHINE\$,,"
+	    sed "s,^# ,,;s,^,$OBJTOP/,;s,\.${TARGET_SPEC:-$MACHINE}\$,,;s,\.$MACHINE\$,,"
 	    ;;
 	*)  sort -u $f;;
 	esac
diff --git a/contrib/bmake/mk/options.mk b/contrib/bmake/mk/options.mk
index 7d1bf67..aa54754 100644
--- a/contrib/bmake/mk/options.mk
+++ b/contrib/bmake/mk/options.mk
@@ -1,4 +1,4 @@
-# $Id: options.mk,v 1.6 2013/01/28 19:28:52 sjg Exp $
+# $Id: options.mk,v 1.7 2013/04/17 20:32:38 sjg Exp $
 #
 #	@(#) Copyright (c) 2012, Simon J. Gerraty
 #
@@ -13,7 +13,7 @@
 #	sjg@crufty.net
 #
 
-# Inspired by FreeBSD bsd.own.mk, but intentionally simpler.
+# Inspired by FreeBSD bsd.own.mk, but intentionally simpler and more flexible.
 
 # Options are normally listed in either OPTIONS_DEFAULT_{YES,NO}
 # We convert these to ${OPTION}/{yes,no} in OPTIONS_DEFAULT_VALUES.
@@ -24,35 +24,36 @@
 # ${OPTION}/yes in OPTIONS_DEFAULT_VALUES.
 # A makefile may set NO_* (or NO*) to indicate it cannot do something.
 # User sets WITH_* and WITHOUT_* to indicate what they want.
-# We set MK_* which is then all we need care about.
+# We set ${OPTION_PREFIX:UMK_}* which is then all we need care about.
 OPTIONS_DEFAULT_VALUES += \
 	${OPTIONS_DEFAULT_NO:O:u:S,$,/no,} \
 	${OPTIONS_DEFAULT_YES:O:u:S,$,/yes,}
 
+OPTION_PREFIX ?= MK_
 .for o in ${OPTIONS_DEFAULT_VALUES:M*/*}
 .if ${o:T:tl} == "no"
 .if defined(WITH_${o:H}) && !defined(NO_${o:H}) && !defined(NO${o:H})
-MK_${o:H} ?= yes
+${OPTION_PREFIX}${o:H} ?= yes
 .else
-MK_${o:H} ?= no
+${OPTION_PREFIX}${o:H} ?= no
 .endif
 .else
 .if defined(WITHOUT_${o:H}) || defined(NO_${o:H}) || defined(NO${o:H})
-MK_${o:H} ?= no
+${OPTION_PREFIX}${o:H} ?= no
 .else
-MK_${o:H} ?= yes
+${OPTION_PREFIX}${o:H} ?= yes
 .endif
 .endif
 .endfor
 
 # OPTIONS_DEFAULT_DEPENDENT += FOO_UTILS/FOO
-# if neither WITH[OUT]_FOO_UTILS is set, use value of MK_FOO
+# if neither WITH[OUT]_FOO_UTILS is set, use value of ${OPTION_PREFIX}FOO
 .for o in ${OPTIONS_DEFAULT_DEPENDENT:M*/*:O:u}
 .if defined(WITH_${o:H}) && !defined(NO_${o:H}) && !defined(NO${o:H})
-MK_${o:H} ?= yes
+${OPTION_PREFIX}${o:H} ?= yes
 .elif defined(WITHOUT_${o:H}) || defined(NO_${o:H}) || defined(NO${o:H})
-MK_${o:H} ?= no
+${OPTION_PREFIX}${o:H} ?= no
 .else
-MK_${o:H} ?= ${MK_${o:T}}
+${OPTION_PREFIX}${o:H} ?= ${${OPTION_PREFIX}${o:T}}
 .endif
 .endfor
diff --git a/contrib/bmake/mk/progs.mk b/contrib/bmake/mk/progs.mk
index 0fd2312..f74f640 100644
--- a/contrib/bmake/mk/progs.mk
+++ b/contrib/bmake/mk/progs.mk
@@ -1,4 +1,4 @@
-# $Id: progs.mk,v 1.11 2012/11/06 17:18:54 sjg Exp $
+# $Id: progs.mk,v 1.12 2013/04/22 18:10:04 sjg Exp $
 #
 #	@(#) Copyright (c) 2006, Simon J. Gerraty
 #
@@ -35,9 +35,11 @@ PROG ?= $t
 
 .if defined(PROG)
 # just one of many
-PROG_VARS += CFLAGS CPPFLAGS CXXFLAGS DPADD DPLIBS LDADD MAN SRCS
+PROG_VARS += BINDIR CFLAGS CPPFLAGS CXXFLAGS DPADD DPLIBS LDADD MAN SRCS
 .for v in ${PROG_VARS:O:u}
+.if defined(${v}.${PROG})
 $v += ${${v}_${PROG}:U${${v}.${PROG}}}
+.endif
 .endfor
 
 # for meta mode, there can be only one!
@@ -63,7 +65,8 @@ UPDATE_DEPENDFILE = NO
 .include <${.PARSEFILE:S,progs,prog,}>
 
 .ifndef PROG
-PROGS_TARGETS += clean
+# tell progs.mk we might want to install things
+PROGS_TARGETS+= cleandepend cleandir cleanobj depend install
 
 .for p in ${PROGS}
 .if defined(PROGS_CXX) && !empty(PROGS_CXX:M$p)
diff --git a/contrib/bmake/mk/stage-install.sh b/contrib/bmake/mk/stage-install.sh
new file mode 100755
index 0000000..64d044f
--- /dev/null
+++ b/contrib/bmake/mk/stage-install.sh
@@ -0,0 +1,98 @@
+#!/bin/sh
+
+# NAME:
+#	stage-install.sh - wrapper around install
+#
+# SYNOPSIS:
+#	stage-install.sh [variable="value"] "args" "dest"
+#
+# DESCRIPTION:
+#	This script is a wrapper around the normal install(1).
+#	Its role is to add '.dirdep' files to the destination.
+#	The variables we might use are:
+#
+#	INSTALL
+#		Path to actual install(1), default is
+#		$REAL_INSTALL
+#
+#	OBJDIR
+#		Path to the dir where '.dirdep' was generated,
+#		default is '.'
+#
+#	_DIRDEP
+#		Path to actual '.dirdep' file, default is
+#		$OBJDIR/.dirdep
+#
+#	The "args" and "dest" are passed as is to install(1), and if a
+#	'.dirdep' file exists it will be linked or copied to each
+#	"file".dirdep placed in "dest" or "dest".dirdep if it happed
+#	to be a file rather than a directory.
+#
+# SEE ALSO:
+#	meta.stage.mk
+#	
+
+# RCSid:
+#	$Id: stage-install.sh,v 1.5 2013/04/19 16:32:24 sjg Exp $
+#
+#	@(#) Copyright (c) 2013, Simon J. Gerraty
+#
+#	This file is provided in the hope that it will
+#	be of use.  There is absolutely NO WARRANTY.
+#	Permission to copy, redistribute or otherwise
+#	use this file is hereby granted provided that 
+#	the above copyright notice and this notice are
+#	left intact. 
+#      
+#	Please send copies of changes and bug-fixes to:
+#	sjg@crufty.net
+#
+
+INSTALL=${REAL_INSTALL:-install}
+OBJDIR=.
+
+while :
+do
+    case "$1" in
+    *=*) eval "$1"; shift;;
+    *) break;;
+    esac
+done
+
+# if .dirdep doesn't exist, just run install and be done
+_DIRDEP=${_DIRDEP:-$OBJDIR/.dirdep}
+[ -s $_DIRDEP ] && EXEC= || EXEC=exec
+$EXEC $INSTALL "$@" || exit 1
+
+# from meta.stage.mk
+LnCp() {
+    rm -f $2 2> /dev/null
+    ln $1 $2 2> /dev/null || cp -p $1 $2
+}
+
+StageDirdep() {
+  t=$1
+  if [ -s $t.dirdep ]; then
+      cmp -s $_DIRDEP $t.dirdep && return
+      echo "ERROR: $t installed by `cat $t.dirdep` not `cat $_DIRDEP`" >&2
+      exit 1
+  fi
+  LnCp $_DIRDEP $t.dirdep || exit 1
+}
+
+args="$@"
+while [ $# -gt 8 ]
+do
+    shift 8
+done
+eval dest=\$$#
+if [ -f $dest ]; then
+    # a file, there can be only one .dirdep needed
+    StageDirdep $dest
+elif [ -d $dest ]; then
+    for f in $args
+    do
+        test -f $f || continue
+        StageDirdep $dest/${f##*/}
+    done
+fi