1# $FreeBSD$
2# $Id: meta.subdir.mk,v 1.11 2015/11/24 22:26:51 sjg Exp $
3
4#
5#	@(#) Copyright (c) 2010, Simon J. Gerraty
6#
7#	This file is provided in the hope that it will
8#	be of use.  There is absolutely NO WARRANTY.
9#	Permission to copy, redistribute or otherwise
10#	use this file is hereby granted provided that 
11#	the above copyright notice and this notice are
12#	left intact. 
13#      
14#	Please send copies of changes and bug-fixes to:
15#	sjg@crufty.net
16#
17
18.if !defined(NO_SUBDIR) && !empty(SUBDIR)
19.if make(destroy*) || make(clean*)
20.MAKE.MODE = compat
21.if !commands(destroy)
22.-include <bsd.obj.mk>
23.endif
24.elif ${.MAKE.LEVEL} == 0
25
26.MAIN: all
27
28.if !exists(${.CURDIR}/${.MAKE.DEPENDFILE:T}) || make(gendirdeps)
29# start with this
30DIRDEPS = ${SUBDIR:N.WAIT:O:u:@d@${RELDIR}/$d@}
31
32.if make(gendirdeps)
33.include <meta.autodep.mk>
34.else
35# this is the cunning bit
36# actually it is probably a bit risky 
37# since we may pickup subdirs which are not relevant
38# the alternative is a walk through the tree though
39# which is difficult without a sub-make.
40
41.if defined(BOOTSTRAP_DEPENDFILES)
42_find_name = ${.MAKE.MAKEFILE_PREFERENCE:@m@-o -name $m@:S,^-o,,1}
43DIRDEPS = ${_subdeps:H:O:u:@d@${RELDIR}/$d@}
44.elif ${.MAKE.DEPENDFILE:E} == ${MACHINE} && defined(ALL_MACHINES)
45# we want to find Makefile.depend.* ie for all machines
46# and turn the dirs into dir.<machine>
47_find_name = -name '${.MAKE.DEPENDFILE:T:R}*'
48DIRDEPS = ${_subdeps:O:u:${NIgnoreFiles}:@d@${RELDIR}/${d:H}.${d:E}@:S,.${MACHINE}$,,:S,.depend$,,}
49.else
50# much simpler
51_find_name = -name ${.MAKE.DEPENDFILE:T}
52.if ${.MAKE.DEPENDFILE:E} == ${MACHINE}
53_find_name += -o -name ${.MAKE.DEPENDFILE:T:R}
54.endif
55DIRDEPS = ${_subdeps:H:O:u:@d@${RELDIR}/$d@}
56.endif
57
58_subdeps != cd ${.CURDIR} && \
59	find ${SUBDIR:N.WAIT} -type f \( ${_find_name} \) -print -o \
60	-name .svn -prune 2> /dev/null; echo
61
62.if empty(_subdeps)
63DIRDEPS =
64.else
65# clean up if needed
66DIRDEPS := ${DIRDEPS:S,^./,,:S,/./,/,g:${SUBDIRDEPS_FILTER:Uu}}
67.endif
68# we just dealt with it, if we leave it defined,
69# dirdeps.mk will compute some interesting combinations.
70.undef ALL_MACHINES
71
72DEP_RELDIR = ${RELDIR}
73.include <dirdeps.mk>
74.endif
75.endif
76.else
77all: .PHONY
78.endif
79
80.endif
81