xref: /freebsd/share/mk/meta.autodep.mk (revision 7ef62cebc2f965b0f640263e179276928885e33d) 
1# $Id: meta.autodep.mk,v 1.56 2022/09/09 17:44:29 sjg Exp $
2
3#
4#	@(#) Copyright (c) 2010, Simon J. Gerraty
5#
6#	This file is provided in the hope that it will
7#	be of use.  There is absolutely NO WARRANTY.
8#	Permission to copy, redistribute or otherwise
9#	use this file is hereby granted provided that
10#	the above copyright notice and this notice are
11#	left intact.
12#
13#	Please send copies of changes and bug-fixes to:
14#	sjg@crufty.net
15#
16
17_this ?= ${.PARSEFILE}
18.if !target(__${_this}__)
19__${_this}__: .NOTMAIN
20
21.-include <local.autodep.mk>
22
23PICO?= .pico
24
25.if defined(SRCS)
26.if ${MAKE_VERSION:U0} >= 20211212
27OBJ_EXTENSIONS += ${.SUFFIXES:M*o}
28.else
29# it would be nice to be able to query .SUFFIXES
30OBJ_EXTENSIONS += .o .po .lo ${PICO}
31.endif
32
33# explicit dependencies help short-circuit .SUFFIX searches
34SRCS_DEP_FILTER+= N*.[hly]
35.for s in ${SRCS:${SRCS_DEP_FILTER:O:u:ts:}}
36.for e in ${OBJ_EXTENSIONS:O:u}
37.if !target(${s:T:R}$e)
38${s:T:R}$e: $s
39.endif
40.endfor
41.endfor
42.endif
43
44.if make(gendirdeps)
45# you are supposed to know what you are doing!
46UPDATE_DEPENDFILE = yes
47.elif !empty(.TARGETS) && !make(all)
48# do not update the *depend* files
49# unless we are building the entire directory or the default target.
50# NO means don't update .depend - or Makefile.depend*
51# no means update .depend but not Makefile.depend*
52UPDATE_DEPENDFILE = NO
53.elif ${.MAKEFLAGS:M-k} != ""
54# it is a bad idea to update anything
55UPDATE_DEPENDFILE = NO
56.endif
57
58_CURDIR ?= ${.CURDIR}
59_OBJDIR ?= ${.OBJDIR}
60_OBJTOP ?= ${OBJTOP}
61_OBJROOT ?= ${OBJROOT:U${_OBJTOP}}
62_DEPENDFILE := ${_CURDIR}/${.MAKE.DEPENDFILE:T}
63
64.if ${.MAKE.LEVEL} > 0
65# do not allow auto update if we ever built this dir without filemon
66NO_FILEMON_COOKIE = .nofilemon
67CLEANFILES += ${NO_FILEMON_COOKIE}
68.if ${.MAKE.MODE:Uno:Mnofilemon} != ""
69UPDATE_DEPENDFILE = NO
70all: ${NO_FILEMON_COOKIE}
71${NO_FILEMON_COOKIE}: .NOMETA
72	@echo UPDATE_DEPENDFILE=NO > ${.TARGET}
73.elif exists(${NO_FILEMON_COOKIE})
74UPDATE_DEPENDFILE = NO
75.warning ${RELDIR} built with nofilemon; UPDATE_DEPENDFILE=NO
76.endif
77.endif
78
79.if ${.MAKE.LEVEL} == 0
80UPDATE_DEPENDFILE = NO
81.endif
82.if !exists(${_DEPENDFILE})
83_bootstrap_dirdeps = yes
84.endif
85_bootstrap_dirdeps ?= no
86UPDATE_DEPENDFILE ?= yes
87
88.if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
89.info ${_DEPENDFILE:S,${SRCTOP}/,,} update=${UPDATE_DEPENDFILE}
90.endif
91
92.if !empty(XMAKE_META_FILE)
93.if exists(${.OBJDIR}/${XMAKE_META_FILE})
94# we cannot get accurate dependencies from an update build
95UPDATE_DEPENDFILE = NO
96.else
97META_XTRAS += ${XMAKE_META_FILE}
98.endif
99.endif
100
101.if ${_bootstrap_dirdeps} == "yes" || exists(${_DEPENDFILE})
102# if it isn't supposed to be touched by us the Makefile should have
103# UPDATE_DEPENDFILE = no
104WANT_UPDATE_DEPENDFILE ?= yes
105.endif
106
107.if ${WANT_UPDATE_DEPENDFILE:Uno:tl} != "no"
108.if ${.MAKE.MODE:Uno:Mmeta*} == "" || ${.MAKE.MODE:Uno:M*read*} != ""
109UPDATE_DEPENDFILE = no
110.endif
111
112.if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
113.info ${_DEPENDFILE:S,${SRCTOP}/,,} update=${UPDATE_DEPENDFILE}
114.endif
115
116.if ${UPDATE_DEPENDFILE:tl} == "yes"
117# sometimes we want .meta files generated to aid debugging/error detection
118# but do not want to consider them for dependencies
119# for example the result of running configure
120# just make sure this is not empty
121META_FILE_FILTER ?= N.meta
122# never consider these
123META_FILE_FILTER += Ndirdeps.cache*
124
125.if !empty(DPADD)
126# if we have any non-libs in DPADD,
127# they probably need to be paid attention to
128.if !empty(DPLIBS)
129FORCE_DPADD = ${DPADD:${DPLIBS:${M_ListToSkip}}:${DPADD_LAST:${M_ListToSkip}}}
130.else
131_nonlibs := ${DPADD:T:Nlib*:N*include}
132.if !empty(_nonlibs)
133FORCE_DPADD += ${_nonlibs:@x@${DPADD:M*/$x}@}
134.endif
135.endif
136.endif
137
138.if !make(gendirdeps)
139.END:	gendirdeps
140.endif
141
142# if we don't have OBJS, then .depend isn't useful
143.if !target(.depend) && (!empty(OBJS) || ${.ALLTARGETS:M*.o} != "")
144# some makefiles and/or targets contain
145# circular dependencies if you dig too deep
146# (as meta mode is apt to do)
147# so we provide a means of suppressing them.
148# the input to the loop below is target: dependency
149# with just one dependency per line.
150# Also some targets are not really local, or use random names.
151# Use local.autodep.mk to provide local additions!
152SUPPRESS_DEPEND += \
153	${SB:S,/,_,g}* \
154	*:y.tab.c \
155	*.c:*.c \
156	*.h:*.h
157
158.NOPATH:	.depend
159# we use ${.MAKE.META.CREATED} to trigger an update but
160# we process using ${.MAKE.META.FILES}
161# the double $$ defers initial evaluation
162# if necessary, we fake .po dependencies, just so the result
163# in Makefile.depend* is stable
164# The current objdir may be referred to in various ways
165OBJDIR_REFS += ${.OBJDIR} ${.OBJDIR:tA} ${_OBJDIR} ${RELOBJTOP}/${RELDIR}
166_depend = .depend
167# it would be nice to be able to get .SUFFIXES as ${.SUFFIXES}
168# we actually only care about the .SUFFIXES of files that might be
169# generated by tools like yacc.
170.if ${MAKE_VERSION:U0} >= 20211212
171DEPEND_SUFFIXES += ${.SUFFIXES:N.sh:N*[0-9aFfglopmnrSsty]}
172.else
173DEPEND_SUFFIXES += .c .h .cpp .hpp .cxx .hxx .cc .hh
174.endif
175.depend: .NOMETA $${.MAKE.META.CREATED} ${_this}
176	@echo "Updating $@: ${.OODATE:T:[1..8]}"
177	@${EGREP:Uegrep} -i '^R .*\.(${DEPEND_SUFFIXES:tl:O:u:S,^.,,:ts|})$$' /dev/null ${.MAKE.META.FILES:T:O:u:${META_FILE_FILTER:ts:}:M*o.meta} | \
178	sed -e 's, \./, ,${OBJDIR_REFS:O:u:@d@;s, $d/, ,@};/\//d' \
179		-e 's,^\([^/][^/]*\).meta...[0-9]* ,\1: ,' | \
180	sort -u | \
181	while read t d; do \
182		case "$$d:" in $$t) continue;; esac; \
183		case "$$t$$d" in ${SUPPRESS_DEPEND:U.:O:u:ts|}) continue;; esac; \
184		echo $$t $$d; \
185	done > $@.${.MAKE.PID}
186	@case "${.MAKE.META.FILES:T:M*.po.*}" in \
187	*.po.*) mv $@.${.MAKE.PID} $@;; \
188	*) { cat $@.${.MAKE.PID}; \
189	sed ${OBJ_EXTENSIONS:N.o:N.po:@o@-e 's,\$o:,.o:,'@} \
190		-e 's,\.o:,.po:,' $@.${.MAKE.PID}; } | sort -u > $@; \
191	rm -f $@.${.MAKE.PID};; \
192	esac
193.else
194# make sure this exists
195.depend:
196# do _not_ assume that .depend is in any fit state for us to use
197CAT_DEPEND = /dev/null
198.if ${.MAKE.LEVEL} > 0
199.export CAT_DEPEND
200.endif
201_depend =
202.endif
203
204.if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
205.info ${_DEPENDFILE:S,${SRCTOP}/,,} _depend=${_depend}
206.endif
207
208.if ${UPDATE_DEPENDFILE} == "yes"
209gendirdeps:	${_DEPENDFILE}
210.endif
211
212.if !target(${_DEPENDFILE})
213.if ${_bootstrap_dirdeps} == "yes"
214# We are boot-strapping a new directory
215# Use DPADD to seed DIRDEPS
216.if !empty(DPADD)
217# anything which matches ${_OBJROOT}* but not ${_OBJTOP}*
218# needs to be qualified in DIRDEPS
219# The pseudo machine "host" is used for HOST_TARGET
220DIRDEPS += \
221	${DPADD:M${_OBJTOP}*:H:C,${_OBJTOP}[^/]*/,,:N.:O:u} \
222	${DPADD:M${_OBJROOT}*:N${_OBJTOP}*:N${STAGE_ROOT:U${_OBJTOP}}/*:H:S,${_OBJROOT},,:C,^([^/]+)/(.*),\2.\1,:S,${HOST_TARGET}$,host,:N.*:O:u}
223
224.endif
225.endif
226
227_gendirdeps_mutex =
228.if defined(NEED_GENDIRDEPS_MUTEX)
229# If a src dir gets built with multiple object dirs,
230# we need a mutex.  Obviously, this is best avoided.
231# Note if .MAKE.DEPENDFILE is common for all ${MACHINE}
232# you either need to mutex, or ensure only one machine builds at a time!
233# lockf is an example of a suitable tool
234LOCKF ?= /usr/bin/lockf
235.if exists(${LOCKF})
236GENDIRDEPS_MUTEXER ?= ${LOCKF} -k
237.endif
238.if empty(GENDIRDEPS_MUTEXER)
239.error NEED_GENDIRDEPS_MUTEX defined, but GENDIRDEPS_MUTEXER not set
240.else
241_gendirdeps_mutex = ${GENDIRDEPS_MUTEXER} ${GENDIRDEPS_MUTEX:U${_CURDIR}/Makefile}
242.endif
243.endif
244
245# If we have META_XTRAS we most likely did not create them
246# but we need to behave as if we did.
247# Avoid adding glob patterns to .MAKE.META.CREATED though.
248.MAKE.META.CREATED += ${META_XTRAS:N*\**:O:u}
249
250.if make(gendirdeps)
251META_FILES = *.meta
252.elif ${OPTIMIZE_OBJECT_META_FILES:Uno:tl} == "no"
253META_FILES = ${.MAKE.META.FILES:T:N.depend*:O:u}
254.else
255# if we have 1000's of .o.meta, ${PICO}.meta etc we need only look at one set
256# it is left as an exercise for the reader to work out what this does
257META_FILES = ${.MAKE.META.FILES:T:N.depend*:N*o.meta:O:u} \
258	${.MAKE.META.FILES:T:M*.${.MAKE.META.FILES:M*o.meta:R:E:O:u:[1]}.meta:O:u}
259.endif
260
261.if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
262.info ${_DEPENDFILE:S,${SRCTOP}/,,}: ${_depend} ${.PARSEDIR}/gendirdeps.mk ${META2DEPS} xtras=${META_XTRAS}
263.endif
264
265.if ${.MAKE.LEVEL} > 0
266.if ${UPDATE_DEPENDFILE} == "yes"
267.-include <${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.options>
268.endif
269.if !empty(GENDIRDEPS_FILTER)
270.export GENDIRDEPS_FILTER
271.endif
272# export to avoid blowing command line limit
273META_FILES := ${META_XTRAS:U:O:u} ${META_FILES:U:T:O:u:${META_FILE_FILTER:ts:}}
274.export META_FILES
275.endif
276
277# we might have .../ in MAKESYSPATH
278_makesyspath:= ${_PARSEDIR}
279${_DEPENDFILE}: ${_depend} ${.PARSEDIR}/gendirdeps.mk  ${META2DEPS} $${.MAKE.META.CREATED}
280	@echo Checking $@: ${.OODATE:T:[1..8]}
281	@(cd . && ${GENDIRDEPS_ENV} \
282	SKIP_GENDIRDEPS='${SKIP_GENDIRDEPS:O:u}' \
283	DPADD='${FORCE_DPADD:O:u}' ${_gendirdeps_mutex} \
284	MAKESYSPATH=${_makesyspath} \
285	${.MAKE} -f gendirdeps.mk RELDIR=${RELDIR} _DEPENDFILE=${_DEPENDFILE})
286	@test -s $@ && touch $@; :
287.endif
288
289.endif
290.endif
291
292.if ${_bootstrap_dirdeps} == "yes"
293DIRDEPS+= ${RELDIR}.${TARGET_SPEC:U${MACHINE}}
294# make sure this is included at least once
295.include <dirdeps.mk>
296.else
297${_DEPENDFILE}: .PRECIOUS
298.endif
299
300CLEANFILES += *.meta filemon.* *.db
301
302# these make it easy to gather some stats
303now_utc = ${%s:L:gmtime}
304start_utc := ${now_utc}
305
306meta_stats= meta=${empty(.MAKE.META.FILES):?0:${.MAKE.META.FILES:[#]}} \
307	created=${empty(.MAKE.META.CREATED):?0:${.MAKE.META.CREATED:[#]}}
308
309.if !target(_reldir_finish)
310#.END: _reldir_finish
311.if target(gendirdeps)
312_reldir_finish: gendirdeps
313.endif
314_reldir_finish: .NOMETA
315	@echo "${TIME_STAMP} Finished ${RELDIR}.${TARGET_SPEC} seconds=$$(( ${now_utc} - ${start_utc} )) ${meta_stats}"
316.endif
317
318.if !target(_reldir_failed)
319#.ERROR: _reldir_failed
320_reldir_failed: .NOMETA
321	@echo "${TIME_STAMP} Failed ${RELDIR}.${TARGET_SPEC} seconds=$$(( ${now_utc} - ${start_utc} )) ${meta_stats}"
322.endif
323
324.if !defined(WITHOUT_META_STATS) && ${.MAKE.LEVEL} > 0
325.END: _reldir_finish
326.ERROR: _reldir_failed
327.endif
328
329.endif
330