1# $Id: dirdeps.mk,v 1.23 2012/11/06 05:44:03 sjg Exp $
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| 1# $Id: dirdeps.mk,v 1.28 2013/03/25 21:11:43 sjg Exp $ |
2
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3# Copyright (c) 2010-2012, Juniper Networks, Inc.
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3# Copyright (c) 2010-2013, Juniper Networks, Inc.
4# All rights reserved. |
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10# notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12# notice, this list of conditions and the following disclaimer in the
13# documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27# Much of the complexity here is for supporting cross-building.
28# If a tree does not support that, simply using plain Makefile.depend
29# should provide sufficient clue.
30# Otherwise the recommendation is to use Makefile.depend.${MACHINE}
31# as expected below.
32
33# Note: this file gets multiply included.
34# This is what we do with DIRDEPS
35
36# DIRDEPS:
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36# This is a list of directories - relative to SRCTOP, it is only
37# of interest to .MAKE.LEVEL 0.
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37# This is a list of directories - relative to SRCTOP, it is
38# normally only of interest to .MAKE.LEVEL 0. |
39# In some cases the entry may be qualified with a .<machine>
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39# suffix, for example to force building something for the pseudo
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40# or .<target_spec> suffix (see TARGET_SPEC_VARS below),
41# for example to force building something for the pseudo |
42# machines "host" or "common" regardless of current ${MACHINE}.
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41# All unqualified entries end up being qualified with .${MACHINE}
42# and _DIRDEPS_USE below, uses the suffix to set MACHINE
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43#
44# All unqualified entries end up being qualified with .${TARGET_SPEC}
45# and partially qualified (if TARGET_SPEC_VARS has multiple
46# entries) are also expanded to a full .<target_spec>.
47# The _DIRDEPS_USE target uses the suffix to set TARGET_SPEC |
48# correctly when visiting each entry.
49#
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45# Each entry is also converted into a set of paths to look for
46# Makefile.depend.<machine> to learn the dependencies of each.
47# Each Makefile.depend.<machine> sets DEP_RELDIR to be the
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50# The fully qualified directory entries are used to construct a
51# dependency graph that will drive the build later.
52#
53# Also, for each fully qualified directory target, we will search
54# using ${.MAKE.DEPENDFILE_PREFERENCE} to find additional
55# dependencies. We use Makefile.depend (default value for
56# .MAKE.DEPENDFILE_PREFIX) to refer to these makefiles to
57# distinguish them from others.
58#
59# Each Makefile.depend file sets DEP_RELDIR to be the |
60# the RELDIR (path relative to SRCTOP) for its directory, and
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49# DEP_MACHINE to its suffix (<machine>), further since
50# each Makefile.depend.<machine> includes dirdeps.mk, this
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| 61# since each Makefile.depend file includes dirdeps.mk, this |
62# processing is recursive and results in .MAKE.LEVEL 0 learning the
63# dependencies of the tree wrt the initial directory (_DEP_RELDIR).
64#
65# BUILD_AT_LEVEL0
66# Indicates whether .MAKE.LEVEL 0 builds anything:
67# if "no" sub-makes are used to build everything,
68# if "yes" sub-makes are only used to build for other machines.
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69# It is best to use "no", but this can require fixing some
70# makefiles to not do anything at .MAKE.LEVEL 0. |
71#
72# TARGET_SPEC_VARS
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60# All the description above (and below) assumes <machine> is the
61# only data needed to control the build.
62# This is not always the case. So in addition to setting
63# MACHINE in the build environment we set TARGET_SPEC which is
64# composed of the values of TARGET_SPEC_VARS separated by
65# commas. The default is just MACHINE.
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73# The default value is just MACHINE, and for most environments
74# this is sufficient. The _DIRDEPS_USE target actually sets
75# both MACHINE and TARGET_SPEC to the suffix of the current
76# target so that in the general case TARGET_SPEC can be ignored. |
77#
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67# If more that MACHINE is needed then sys.mk needs to decompose
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| 78# If more than MACHINE is needed then sys.mk needs to decompose |
79# TARGET_SPEC and set the relevant variables accordingly.
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69# It is important that MACHINE be included in TARGET_SPEC_VARS
70# since if there is more the value passed as MACHINE will infact
71# be the TARGET_SPEC.
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80# It is important that MACHINE be included in and actually be
81# the first member of TARGET_SPEC_VARS. This allows other
82# variables to be considered optional, and some of the treatment
83# below relies on MACHINE being the first entry. |
84# Note: TARGET_SPEC cannot contain any '.'s so the target
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73# tripple used by compiler folk won't work (directly anyway).
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| 85# triple used by compiler folk won't work (directly anyway). |
86#
87# For example:
88#
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77# # variables other than MACHINE might be optional
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89# # Always list MACHINE first,
90# # other variables might be optional. |
91# TARGET_SPEC_VARS = MACHINE TARGET_OS
92# .if ${TARGET_SPEC:Uno:M*,*} != ""
93# _tspec := ${TARGET_SPEC:S/,/ /g}
94# MACHINE := ${_tspec:[1]}
95# TARGET_OS := ${_tspec:[2]}
96# # etc.
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97# # We need to stop that TARGET_SPEC affecting any submakes
98# # and deal with MACHINE=${TARGET_SPEC} in the environment.
99# TARGET_SPEC =
100# # export but do not track
101# .export-env TARGET_SPEC
102# .export ${TARGET_SPEC_VARS} |
103# .for v in ${TARGET_SPEC_VARS:O:u}
104# .if empty($v)
105# .undef $v
106# .endif
107# .endfor
108# .endif
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109# # make sure we know what TARGET_SPEC is
110# # as we may need it to find Makefile.depend*
111# TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,} |
112#
113
114.if ${.MAKE.LEVEL} == 0
115# only the first instance is interested in all this
116
117# First off, we want to know what ${MACHINE} to build for.
118# This can be complicated if we are using a mixture of ${MACHINE} specific
119# and non-specific Makefile.depend*
120
121.if !target(_DIRDEP_USE)
122# do some setup we only need once
123_CURDIR ?= ${.CURDIR}
124
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125# make sure these are empty to start with
126_DEP_TARGET_SPEC =
127_DIRDEP_CHECKED =
128 |
129# If TARGET_SPEC_VARS is other than just MACHINE
130# it should be set by sys.mk or similar by now.
131# TARGET_SPEC must not contain any '.'s.
132TARGET_SPEC_VARS ?= MACHINE
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| 133# this is what we started with |
134TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
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135# this is what we mostly use below
136DEP_TARGET_SPEC = ${TARGET_SPEC_VARS:S,^,DEP_,:@v@${$v:U}@:ts,}
137# make sure we have defaults
138.for v in ${TARGET_SPEC_VARS}
139DEP_$v ?= ${$v}
140.endfor |
141
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142.if ${TARGET_SPEC_VARS:[#]} > 1
143# Ok, this gets more complex (putting it mildly).
144# In order to stay sane, we need to ensure that all the build_dirs
145# we compute below are fully qualified wrt DEP_TARGET_SPEC.
146# The makefiles may only partially specify (eg. MACHINE only),
147# so we need to construct a set of modifiers to fill in the gaps.
148# jot 10 should output 1 2 3 .. 10
149JOT ?= jot
150_tspec_x := ${${JOT} ${TARGET_SPEC_VARS:[#]}:L:sh}
151# this handles unqualified entries
152M_dep_qual_fixes = C;(/[^/.,]+)$$;\1.${DEP_TARGET_SPEC};
153# there needs to be at least one item missing for these to make sense
154.for i in ${_tspec_x:[2..-1]}
155_tspec_m$i := ${TARGET_SPEC_VARS:[2..$i]:@w@[^,]+@:ts,}
156_tspec_a$i := ,${TARGET_SPEC_VARS:[$i..-1]:@v@$${DEP_$v}@:ts,}
157M_dep_qual_fixes += C;(\.${_tspec_m$i})$$;\1${_tspec_a$i};
158.endfor
159.else
160# A harmless? default.
161M_dep_qual_fixes = U
162.endif
163 |
164.if !defined(.MAKE.DEPENDFILE_PREFERENCE)
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110# this makes the logic below neater?
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165# .MAKE.DEPENDFILE_PREFERENCE makes the logic below neater?
166# you really want this set by sys.mk or similar |
167.MAKE.DEPENDFILE_PREFERENCE = ${_CURDIR}/${.MAKE.DEPENDFILE:T}
168.if ${.MAKE.DEPENDFILE:E} == "${TARGET_SPEC}"
169.if ${TARGET_SPEC} != ${MACHINE}
170.MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}.$${MACHINE}
171.endif
172.MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}
173.endif
174.endif
175
176_default_dependfile := ${.MAKE.DEPENDFILE_PREFERENCE:[1]:T}
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121_machine_dependfiles := ${.MAKE.DEPENDFILE_PREFERENCE:M*.${TARGET_SPEC}} \
122 ${.MAKE.DEPENDFILE_PREFERENCE:M*.${MACHINE}}
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| 177_machine_dependfiles := ${.MAKE.DEPENDFILE_PREFERENCE:T:M*${MACHINE}*} |
178
179# for machine specific dependfiles we require ${MACHINE} to be at the end
180# also for the sake of sanity we require a common prefix
181.if !defined(.MAKE.DEPENDFILE_PREFIX)
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| 182# knowing .MAKE.DEPENDFILE_PREFIX helps |
183.if !empty(_machine_dependfiles)
184.MAKE.DEPENDFILE_PREFIX := ${_machine_dependfiles:[1]:T:R}
185.else
186.MAKE.DEPENDFILE_PREFIX := ${_default_dependfile:T}
187.endif
188.endif
189
190
191# this is how we identify non-machine specific dependfiles
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136N_notmachine := ${.MAKE.DEPENDFILE_PREFERENCE:E:N${TARGET_SPEC}:N${MACHINE}:${M_ListToSkip}}
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| 192N_notmachine := ${.MAKE.DEPENDFILE_PREFERENCE:E:N*${MACHINE}*:${M_ListToSkip}} |
193
194.endif # !target(_DIRDEP_USE)
195
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196# if we were included recursively _DEP_TARGET_SPEC should be valid.
197.if empty(_DEP_TARGET_SPEC)
198# we may or may not have included a dependfile yet |
199_last_dependfile := ${.MAKE.MAKEFILES:M*/${.MAKE.DEPENDFILE_PREFIX}*:[-1]}
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200.if !empty(_debug_reldir)
201.info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: _last_dependfile='${_last_dependfile}'
202.endif |
203
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142# Note: if a makefile is read many times, the above
143# will not work, so we also test for DEP_MACHINE==depend below.
144.if empty(_last_dependfile)
145# we haven't included one yet
146DEP_MACHINE ?= ${TARGET_MACHINE:U${TARGET_SPEC}}
147# else it should be correctly set by ${.MAKE.DEPENDFILE}
148.elif ${_last_dependfile:E:${N_notmachine}} == "" || ${DEP_MACHINE:Uno:${N_notmachine}} == ""
149# don't rely on manually maintained files to be correct
150DEP_MACHINE := ${_DEP_MACHINE:U${TARGET_SPEC}}
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204.if empty(_last_dependfile) || ${_last_dependfile:E:${N_notmachine}} == ""
205# this is all we have to work with
206DEP_MACHINE = ${TARGET_MACHINE:U${MACHINE}}
207_DEP_TARGET_SPEC := ${DEP_TARGET_SPEC} |
208.else
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152# just in case
153DEP_MACHINE ?= ${_last_dependfile:E}
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| 209_DEP_TARGET_SPEC = ${_last_dependfile:${M_dep_qual_fixes:ts:}:E} |
210.endif
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211.if !empty(_last_dependfile)
212# record that we've read dependfile for this
213_DIRDEP_CHECKED += ${_CURDIR}.${TARGET_SPEC}
214.endif
215.endif |
216
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217# by now _DEP_TARGET_SPEC should be set, parse it.
218.if ${TARGET_SPEC_VARS:[#]} > 1
219# we need to parse DEP_MACHINE may or may not contain more info
220_tspec := ${_DEP_TARGET_SPEC:S/,/ /g}
221.for i in ${_tspec_x}
222DEP_${TARGET_SPEC_VARS:[$i]} := ${_tspec:[$i]}
223.endfor
224.for v in ${TARGET_SPEC_VARS:O:u}
225.if empty(DEP_$v)
226.undef DEP_$v
227.endif
228.endfor
229.else
230DEP_MACHINE := ${_DEP_TARGET_SPEC}
231.endif
232 |
233# pickup customizations
234# as below you can use !target(_DIRDEP_USE) to protect things
235# which should only be done once.
236.-include "local.dirdeps.mk"
237
238# the first time we are included the _DIRDEP_USE target will not be defined
239# we can use this as a clue to do initialization and other one time things.
240.if !target(_DIRDEP_USE)
241# make sure this target exists
242dirdeps:
243
244# We normally expect to be included by Makefile.depend.*
245# which sets the DEP_* macros below.
246DEP_RELDIR ?= ${RELDIR}
247
248# this can cause lots of output!
249# set to a set of glob expressions that might match RELDIR
250DEBUG_DIRDEPS ?= no
251
252# remember the initial value of DEP_RELDIR - we test for it below.
253_DEP_RELDIR := ${DEP_RELDIR}
254
255# things we skip for host tools
256SKIP_HOSTDIR ?=
257
258NSkipHostDir = ${SKIP_HOSTDIR:N*.host:S,$,.host,:N.host:${M_ListToSkip}}
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182NSkipHostDep = ${SKIP_HOSTDIR:R:@d@*/$d*.host@:${M_ListToSkip}}
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259
260# things we always skip
261# SKIP_DIRDEPS allows for adding entries on command line.
262SKIP_DIR += .host *.WAIT ${SKIP_DIRDEPS}
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| 263SKIP_DIR.host += ${SKIP_HOSTDIR} |
264
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188.ifdef HOSTPROG
189SKIP_DIR += ${SKIP_HOSTDIR}
190.endif
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265DEP_SKIP_DIR = ${SKIP_DIR} \
266 ${SKIP_DIR.${DEP_TARGET_SPEC}:U} \
267 ${SKIP_DIR.${DEP_MACHINE}:U} \
268 ${SKIP_DIRDEPS.${DEP_MACHINE}:U} |
269
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192NSkipDir = ${SKIP_DIR:${M_ListToSkip}}
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| 270NSkipDir = ${DEP_SKIP_DIR:${M_ListToSkip}} |
271
272.if defined(NO_DIRDEPS) || defined(NODIRDEPS)
273# confine ourselves to the original dir
274DIRDEPS_FILTER += M${_DEP_RELDIR}*
275.endif
276
277# we supress SUBDIR when visiting the leaves
278# we assume sys.mk will set MACHINE_ARCH
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279# you can add extras to DIRDEP_USE_ENV
280# if there is no makefile in the target directory, we skip it. |
281_DIRDEP_USE: .USE .MAKE
282 @for m in ${.MAKE.MAKEFILE_PREFERENCE}; do \
283 test -s ${.TARGET:R}/$$m || continue; \
284 echo "${TRACER}Checking ${.TARGET:R} for ${.TARGET:E} ..."; \
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| 285 MACHINE_ARCH= NO_SUBDIR=1 ${DIRDEP_USE_ENV} \ |
286 TARGET_SPEC=${.TARGET:E} \
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206 MACHINE=${.TARGET:E} MACHINE_ARCH= NO_SUBDIR=1 \
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| 287 MACHINE=${.TARGET:E} \ |
288 ${.MAKE} -C ${.TARGET:R} || exit 1; \
289 break; \
290 done
291
292.ifdef ALL_MACHINES
293# this is how you limit it to only the machines we have been built for
294# previously.
295.if empty(ONLY_MACHINE_LIST)
296.if !empty(ALL_MACHINE_LIST)
297# ALL_MACHINE_LIST is the list of all legal machines - ignore anything else
298_machine_list != cd ${_CURDIR} && 'ls' -1 ${ALL_MACHINE_LIST:O:u:@m@${.MAKE.DEPENDFILE:T:R}.$m@} 2> /dev/null; echo
299.else
300_machine_list != 'ls' -1 ${_CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.* 2> /dev/null; echo
301.endif
302_only_machines := ${_machine_list:${NIgnoreFiles:UN*.bak}:E:O:u}
303.else
304_only_machines := ${ONLY_MACHINE_LIST}
305.endif
306
307.if empty(_only_machines)
308# we must be boot-strapping
309_only_machines := ${TARGET_MACHINE:U${ALL_MACHINE_LIST:U${DEP_MACHINE}}}
310.endif
311
312.else # ! ALL_MACHINES
313# if ONLY_MACHINE_LIST is set, we are limited to that
314# if TARGET_MACHINE is set - it is really the same as ONLY_MACHINE_LIST
315# otherwise DEP_MACHINE is it - so DEP_MACHINE will match.
316_only_machines := ${ONLY_MACHINE_LIST:U${TARGET_MACHINE:U${DEP_MACHINE}}:M${DEP_MACHINE}}
317.endif
318
319.if !empty(NOT_MACHINE_LIST)
320_only_machines := ${_only_machines:${NOT_MACHINE_LIST:${M_ListToSkip}}}
321.endif
322
323# make sure we have a starting place?
324DIRDEPS ?= ${RELDIR}
325.endif # target
326
327_debug_reldir := ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.${DEP_MACHINE}:L:M$x}@}
328_debug_search := ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.depend:L:M$x}@}
329
330# the rest is done repeatedly for every Makefile.depend we read.
331# if we are anything but the original dir we care only about the
332# machine type we were included for..
333
334.if ${DEP_RELDIR} == "."
335_this_dir := ${SRCTOP}
336.else
337_this_dir := ${SRCTOP}/${DEP_RELDIR}
338.endif
339
340# on rare occasions, there can be a need for extra help
341_dep_hack := ${_this_dir}/${.MAKE.DEPENDFILE_PREFIX}.inc
342.-include "${_dep_hack}"
343
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263.if ${DEP_RELDIR} != ${_DEP_RELDIR} || ${DEP_MACHINE} != ${TARGET_SPEC}
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| 344.if ${DEP_RELDIR} != ${_DEP_RELDIR} || ${DEP_TARGET_SPEC} != ${TARGET_SPEC} |
345# this should be all
346_machines := ${DEP_MACHINE}
347.else
348# this is the machine list we actually use below
349_machines := ${_only_machines}
350
351.if defined(HOSTPROG) || ${DEP_MACHINE} == "host"
352# we need to build this guy's dependencies for host as well.
353_machines += host
354.endif
355
356_machines := ${_machines:O:u}
357.endif
358
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278# reset these each time through
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359.if ${TARGET_SPEC_VARS:[#]} > 1
360# we need to tweak _machines
361_dm := ${DEP_MACHINE}
362_machines := ${_machines:@DEP_MACHINE@${DEP_TARGET_SPEC}@}
363DEP_MACHINE := ${_dm}
364.endif
365
366# reset each time through |
367_build_dirs =
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280_depdir_files =
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368
369.if ${DEP_RELDIR} == ${_DEP_RELDIR}
370# pickup other machines for this dir if necessary
371.if ${BUILD_AT_LEVEL0:Uyes} == "no"
372_build_dirs += ${_machines:@m@${_CURDIR}.$m@}
373.else
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287_build_dirs += ${_machines:N${DEP_MACHINE}:@m@${_CURDIR}.$m@}
288.if ${DEP_MACHINE} == ${TARGET_SPEC}
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374_build_dirs += ${_machines:N${DEP_TARGET_SPEC}:@m@${_CURDIR}.$m@}
375.if ${DEP_TARGET_SPEC} == ${TARGET_SPEC} |
376# pickup local dependencies now
377.-include <.depend>
378.endif
379.endif
380.endif
381
382.if !empty(_debug_reldir)
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296.info ${DEP_RELDIR}.${DEP_MACHINE}: _last_dependfile='${_last_dependfile}'
297.info ${DEP_RELDIR}.${DEP_MACHINE}: DIRDEPS='${DIRDEPS}'
298.info ${DEP_RELDIR}.${DEP_MACHINE}: _machines='${_machines}'
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383.info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: DIRDEPS='${DIRDEPS}'
384.info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: _machines='${_machines}' |
385.endif
386
387.if !empty(DIRDEPS)
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388# these we reset each time through as they can depend on DEP_MACHINE
389DEP_DIRDEPS_FILTER = \
390 ${DIRDEPS_FILTER.${DEP_TARGET_SPEC}:U} \
391 ${DIRDEPS_FILTER.${DEP_MACHINE}:U} \
392 ${DIRDEPS_FILTER:U}
393.if empty(DEP_DIRDEPS_FILTER)
394# something harmless
395DEP_DIRDEPS_FILTER = U
396.endif |
397
398# this is what we start with
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304__depdirs := ${DIRDEPS:${NSkipDir}:${DIRDEPS_FILTER:ts:}:O:u:@d@${SRCTOP}/$d@}
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| 399__depdirs := ${DIRDEPS:${NSkipDir}:${DEP_DIRDEPS_FILTER:ts:}:O:u:@d@${SRCTOP}/$d@} |
400
401# some entries may be qualified with .<machine>
402# the :M*/*/*.* just tries to limit the dirs we check to likely ones.
403# the ${d:E:M*/*} ensures we don't consider junos/usr.sbin/mgd
404__qual_depdirs := ${__depdirs:M*/*/*.*:@d@${exists($d):?:${"${d:E:M*/*}":?:${exists(${d:R}):?$d:}}}@}
405__unqual_depdirs := ${__depdirs:${__qual_depdirs:Uno:${M_ListToSkip}}}
406
407.if ${DEP_RELDIR} == ${_DEP_RELDIR}
408# if it was called out - we likely need it.
409__hostdpadd := ${DPADD:U.:M${HOST_OBJTOP}/*:S,${HOST_OBJTOP}/,,:H:${NSkipDir}:${DIRDEPS_FILTER:ts:}:S,$,.host,:N.*:@d@${SRCTOP}/$d@}
410__qual_depdirs += ${__hostdpadd}
411.endif
412
413.if !empty(_debug_reldir)
414.info depdirs=${__depdirs}
415.info qualified=${__qual_depdirs}
416.info unqualified=${__unqual_depdirs}
417.endif
418
419# _build_dirs is what we will feed to _DIRDEP_USE
420_build_dirs += \
421 ${__qual_depdirs:M*.host:${NSkipHostDir}:N.host} \
422 ${__qual_depdirs:N*.host} \
423 ${_machines:@m@${__unqual_depdirs:@d@$d.$m@}@}
424
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330_build_dirs := ${_build_dirs:O:u}
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425# qualify everything now
426_build_dirs := ${_build_dirs:${M_dep_qual_fixes:ts:}:O:u} |
427
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332# this is where we will pick up more dependencies from
333# the inner inline loops look complex, but save a significant
334# amount of memory compared to a .for loop.
335_depdir_files =
336.for d in ${_build_dirs}
337.if exists($d)
338# easy, we're building for ${MACHINE}
339_depdir_files += ${.MAKE.DEPENDFILE_PREFERENCE:T:@m@${exists($d/$m):?$d/$m:}@:[1]}
340.elif exists(${d:R}) && ${d:R:T} == ${d:T:R}
341# a little more complex - building for another machine
342# we will ensure the file is qualified with a machine
343# so that if necessary _DEP_MACHINE can be set below
344_depdir_files += ${.MAKE.DEPENDFILE_PREFERENCE:T:S,.${TARGET_SPEC}$,.${d:E},:S,.${MACHINE}$,.${d:E},:@m@${exists(${d:R}/$m):?${d:R}/$m:}@:[1]:@m@${"${m:M*.${d:E}}":?$m:$m.${d:E}}@}
345.endif
346.endfor
347
348# clean up
349_depdir_files := ${_depdir_files:O:u}
350
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428.endif # empty DIRDEPS
429
430# Normally if doing make -V something,
431# we do not want to waste time chasing DIRDEPS
432# but if we want to count the number of Makefile.depend* read, we do.
433.if ${.MAKEFLAGS:M-V${_V_READ_DIRDEPS}} == ""
434.if !empty(_build_dirs)
435# this makes it all happen
436dirdeps: ${_build_dirs}
437${_build_dirs}: _DIRDEP_USE
438
439.if !empty(_debug_reldir)
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363.info ${DEP_RELDIR}.${DEP_MACHINE}: ${_build_dirs}
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| 440.info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: needs: ${_build_dirs} |
441.endif
442
|
| 443# this builds the dependency graph |
444.for m in ${_machines}
445# it would be nice to do :N${.TARGET}
446.if !empty(__qual_depdirs)
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369.for q in ${__qual_depdirs:E:O:u:N$m}
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| 447.for q in ${__qual_depdirs:${M_dep_qual_fixes:ts:}:E:O:u:N$m} |
448.if !empty(_debug_reldir) || ${DEBUG_DIRDEPS:@x@${${DEP_RELDIR}.$m:L:M$x}${${DEP_RELDIR}.$q:L:M$x}@} != ""
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371.info ${DEP_RELDIR}.$m: ${_build_dirs:M*.$q}
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| 449.info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$q} |
450.endif
451${_this_dir}.$m: ${_build_dirs:M*.$q}
452.endfor
453.endif
454.if !empty(_debug_reldir)
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377.info ${DEP_RELDIR}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m}
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| 455.info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$m:N${_this_dir}.$m} |
456.endif
457${_this_dir}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m}
458.endfor
459
460.endif
461
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384.for d in ${_depdir_files}
385.if ${.MAKE.MAKEFILES:M${d}} == ""
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462# Now find more dependencies - and recurse.
463.for d in ${_build_dirs}
464.if ${_DIRDEP_CHECKED:M$d} == ""
465# once only
466_DIRDEP_CHECKED += $d
467# Note: _build_dirs is fully qualifed so d:R is always the directory
468.if exists(${d:R})
469# Warning: there is an assumption here that MACHINE is always
470# the first entry in TARGET_SPEC_VARS.
471# If TARGET_SPEC and MACHINE are insufficient, you have a problem.
472_m := ${.MAKE.DEPENDFILE_PREFERENCE:T:S;${TARGET_SPEC}$;${d:E};:S;${MACHINE};${d:E:C/,.*//};:@m@${exists(${d:R}/$m):?${d:R}/$m:}@:[1]}
473.if !empty(_m)
474_qm := ${_m:${M_dep_qual_fixes:ts:}} |
475.if !empty(_debug_search)
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387.info Looking for $d
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| 476.info Looking for ${_qm} |
477.endif
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389.if exists($d)
390.include <$d>
391.elif exists(${d:R})
392# an unqualified file exists, we qualified it above so we can set _DEP_MACHINE
393# it might be manually maintained and shared by all machine types
394# tell it the machine we are interested in.
395_DEP_MACHINE := ${d:E}
396.if !empty(_debug_reldir)
397.info loading ${d:R} for ${_DEP_MACHINE}
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478# we pass _DEP_TARGET_SPEC to tell the next step what we want
479_DEP_TARGET_SPEC := ${d:E}
480# some makefiles may still look at this
481_DEP_MACHINE := ${d:E:C/,.*//}
482.if !empty(_debug_reldir) && ${_qm} != ${_m}
483.info loading ${_m} for ${d:E} |
484.endif
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399# pretend we read $d, so we don't come by here again.
400.MAKE.MAKEFILES += $d
401.include <${d:R}>
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| 485.include <${_m}> |
486.endif
487.endif
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| 488.endif |
489.endfor
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| 490 |
491.endif # -V
492
493.elif ${.MAKE.LEVEL} > 42
494.error You should have stopped recursing by now.
495.else
496_DEP_RELDIR := ${DEP_RELDIR}
497# pickup local dependencies
498.-include <.depend>
499.endif
500
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