bsd.dep.mk revision 300343 
1# $FreeBSD: head/share/mk/bsd.dep.mk 300343 2016-05-21 01:31:48Z bdrewery $
2#
3# The include file <bsd.dep.mk> handles Makefile dependencies.
4#
5#
6# +++ variables +++
7#
8# CLEANDEPENDDIRS	Additional directories to remove for the cleandepend
9# 			target.
10#
11# CLEANDEPENDFILES	Additional files to remove for the cleandepend target.
12#
13# CTAGS		A tags file generation program [gtags]
14#
15# CTAGSFLAGS	Options for ctags(1) [not set]
16#
17# DEPENDFILE	dependencies file [.depend]
18#
19# GTAGSFLAGS	Options for gtags(1) [-o]
20#
21# HTAGSFLAGS	Options for htags(1) [not set]
22#
23# SRCS          List of source files (c, c++, assembler)
24#
25# DPSRCS	List of source files which are needed for generating
26#		dependencies, ${SRCS} are always part of it.
27#
28# +++ targets +++
29#
30#	cleandepend:
31#		remove ${CLEANDEPENDFILES}; remove ${CLEANDEPENDDIRS} and all
32#		contents.
33#
34#	depend:
35#		Make the dependencies for the source files, and store
36#		them in the file ${DEPENDFILE}.
37#
38#	tags:
39#		In "ctags" mode, create a tags file for the source files.
40#		In "gtags" mode, create a (GLOBAL) gtags file for the
41#		source files.  If HTML is defined, htags(1) is also run
42#		after gtags(1).
43
44.if !target(__<bsd.init.mk>__)
45.error bsd.dep.mk cannot be included directly.
46.endif
47
48CTAGS?=		gtags
49CTAGSFLAGS?=
50GTAGSFLAGS?=	-o
51HTAGSFLAGS?=
52
53.if ${MK_DIRDEPS_BUILD} == "no"
54.MAKE.DEPENDFILE= ${DEPENDFILE}
55.endif
56CLEANDEPENDFILES+=	${DEPENDFILE} ${DEPENDFILE}.*
57.if ${MK_META_MODE} == "yes"
58CLEANDEPENDFILES+=	*.meta
59.endif
60
61# Keep `tags' here, before SRCS are mangled below for `depend'.
62.if !target(tags) && defined(SRCS) && !defined(NO_TAGS)
63tags: ${SRCS}
64.if ${CTAGS:T} == "gtags"
65	@cd ${.CURDIR} && ${CTAGS} ${GTAGSFLAGS} ${.OBJDIR}
66.if defined(HTML)
67	@cd ${.CURDIR} && htags ${HTAGSFLAGS} -d ${.OBJDIR} ${.OBJDIR}
68.endif
69.else
70	@${CTAGS} ${CTAGSFLAGS} -f /dev/stdout \
71	    ${.ALLSRC:N*.h} | sed "s;${.CURDIR}/;;" > ${.TARGET}
72.endif
73.endif
74
75# Skip reading .depend when not needed to speed up tree-walks
76# and simple lookups.
77.if !empty(.MAKEFLAGS:M-V${_V_READ_DEPEND}) || make(obj) || make(clean*) || \
78    make(install*) || make(analyze)
79_SKIP_READ_DEPEND=	1
80.if ${MK_DIRDEPS_BUILD} == "no"
81.MAKE.DEPENDFILE=	/dev/null
82.endif
83.endif
84
85.if defined(SRCS)
86CLEANFILES?=
87
88.for _S in ${SRCS:N*.[dhly]}
89OBJS_DEPEND_GUESS.${_S:R}.o=	${_S}
90.endfor
91
92# Lexical analyzers
93.for _LSRC in ${SRCS:M*.l:N*/*}
94.for _LC in ${_LSRC:R}.c
95${_LC}: ${_LSRC}
96	${LEX} ${LFLAGS} -o${.TARGET} ${.ALLSRC}
97OBJS_DEPEND_GUESS.${_LC:R}.o=	${_LC}
98SRCS:=	${SRCS:S/${_LSRC}/${_LC}/}
99CLEANFILES+= ${_LC}
100.endfor
101.endfor
102
103# Yacc grammars
104.for _YSRC in ${SRCS:M*.y:N*/*}
105.for _YC in ${_YSRC:R}.c
106SRCS:=	${SRCS:S/${_YSRC}/${_YC}/}
107CLEANFILES+= ${_YC}
108.if !empty(YFLAGS:M-d) && !empty(SRCS:My.tab.h)
109.ORDER: ${_YC} y.tab.h
110${_YC} y.tab.h: ${_YSRC}
111	${YACC} ${YFLAGS} ${.ALLSRC}
112	cp y.tab.c ${_YC}
113CLEANFILES+= y.tab.c y.tab.h
114.elif !empty(YFLAGS:M-d)
115.for _YH in ${_YC:R}.h
116.ORDER: ${_YC} ${_YH}
117${_YC} ${_YH}: ${_YSRC}
118	${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
119SRCS+=	${_YH}
120CLEANFILES+= ${_YH}
121.endfor
122.else
123${_YC}: ${_YSRC}
124	${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
125.endif
126OBJS_DEPEND_GUESS.${_YC:R}.o=	${_YC}
127.endfor
128.endfor
129
130# DTrace probe definitions
131.if ${SRCS:M*.d}
132CFLAGS+=	-I${.OBJDIR}
133.endif
134.for _DSRC in ${SRCS:M*.d:N*/*}
135.for _D in ${_DSRC:R}
136SRCS+=	${_D}.h
137${_D}.h: ${_DSRC}
138	${DTRACE} ${DTRACEFLAGS} -h -s ${.ALLSRC}
139SRCS:=	${SRCS:S/^${_DSRC}$//}
140OBJS+=	${_D}.o
141CLEANFILES+= ${_D}.h ${_D}.o
142${_D}.o: ${_DSRC} ${OBJS:S/^${_D}.o$//}
143	@rm -f ${.TARGET}
144	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
145.if defined(LIB)
146CLEANFILES+= ${_D}.So ${_D}.po
147${_D}.So: ${_DSRC} ${SOBJS:S/^${_D}.So$//}
148	@rm -f ${.TARGET}
149	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
150${_D}.po: ${_DSRC} ${POBJS:S/^${_D}.po$//}
151	@rm -f ${.TARGET}
152	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
153.endif
154.endfor
155.endfor
156
157
158.if !empty(.MAKE.MODE:Mmeta) && empty(.MAKE.MODE:Mnofilemon)
159_meta_filemon=	1
160.endif
161.if ${MAKE_VERSION} < 20160220
162DEPEND_MP?=	-MP
163.endif
164# Handle OBJS=../somefile.o hacks.  Just replace '/' rather than use :T to
165# avoid collisions.
166DEPEND_FILTER=	C,/,_,g
167DEPENDSRCS=	${SRCS:M*.[cSC]} ${SRCS:M*.cxx} ${SRCS:M*.cpp} ${SRCS:M*.cc}
168.if !empty(DEPENDSRCS)
169DEPENDOBJS+=	${DEPENDSRCS:R:S,$,.o,}
170.endif
171DEPENDFILES_OBJS=	${DEPENDOBJS:O:u:${DEPEND_FILTER}:C/^/${DEPENDFILE}./}
172DEPEND_CFLAGS+=	-MD ${DEPEND_MP} -MF${DEPENDFILE}.${.TARGET:${DEPEND_FILTER}}
173DEPEND_CFLAGS+=	-MT${.TARGET}
174# Skip generating or including .depend.* files if in meta+filemon mode since
175# it will track dependencies itself.  OBJS_DEPEND_GUESS is still used though.
176.if !defined(_meta_filemon)
177.if defined(.PARSEDIR)
178# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
179# as those are the only ones we will include.
180DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET:${DEPEND_FILTER}}}" != ""
181CFLAGS+=	${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
182.else
183CFLAGS+=	${DEPEND_CFLAGS}
184.endif
185.if !defined(_SKIP_READ_DEPEND)
186.for __depend_obj in ${DEPENDFILES_OBJS}
187.if ${MAKE_VERSION} < 20160220
188.sinclude "${.OBJDIR}/${__depend_obj}"
189.else
190.dinclude "${.OBJDIR}/${__depend_obj}"
191.endif
192.endfor
193.endif	# !defined(_SKIP_READ_DEPEND)
194.endif	# !defined(_meta_filemon)
195.endif	# defined(SRCS)
196
197.if ${MK_DIRDEPS_BUILD} == "yes"
198# Prevent meta.autodep.mk from tracking "local dependencies".
199.depend:
200.include <meta.autodep.mk>
201# If using filemon then _EXTRADEPEND is skipped since it is not needed.
202.if empty(.MAKE.MODE:Mnofilemon)
203# this depend: bypasses that below
204# the dependency helps when bootstrapping
205depend: beforedepend ${DPSRCS} ${SRCS} afterdepend
206beforedepend:
207afterdepend: beforedepend
208.endif
209.endif
210
211# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
212# For meta+filemon the .meta file is checked for since it is the dependency
213# file used.
214.for __obj in ${DEPENDOBJS:O:u}
215.if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
216    (!defined(_meta_filemon) && !exists(${.OBJDIR}/${DEPENDFILE}.${__obj}))
217${__obj}: ${OBJS_DEPEND_GUESS}
218${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
219.elif defined(_meta_filemon)
220# For meta mode we still need to know which file to depend on to avoid
221# ambiguous suffix transformation rules from .PATH.  Meta mode does not
222# use .depend files.  We really only need source files, not headers.
223${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
224${__obj}: ${OBJS_DEPEND_GUESS.${__obj}:N*.h}
225.endif
226.endfor
227
228# Always run 'make depend' to generate dependencies early and to avoid the
229# need for manually running it.  The dirdeps build should only do this in
230# sub-makes though since MAKELEVEL0 is for dirdeps calculations.
231.if ${MK_DIRDEPS_BUILD} == "no" || ${.MAKE.LEVEL} > 0
232beforebuild: depend
233.endif
234
235.if !target(depend)
236.if defined(SRCS)
237depend: beforedepend ${DEPENDFILE} afterdepend
238
239# Tell bmake not to look for generated files via .PATH
240.NOPATH: ${DEPENDFILE} ${DEPENDFILES_OBJS}
241
242DPSRCS+= ${SRCS}
243# A .depend file will only be generated if there are commands in
244# beforedepend/_EXTRADEPEND/afterdepend.  The target is kept
245# to allow 'make depend' to generate files.
246${DEPENDFILE}: ${DPSRCS}
247.if !empty(.MAKE.MODE:Mmeta) || exists(${.OBJDIR}/${DEPENDFILE})
248	rm -f ${DEPENDFILE}
249.endif
250.if target(_EXTRADEPEND)
251_EXTRADEPEND: .USE
252${DEPENDFILE}: _EXTRADEPEND
253.endif
254
255.ORDER: ${DEPENDFILE} afterdepend
256.else
257depend: beforedepend afterdepend
258.endif
259.if !target(beforedepend)
260beforedepend:
261.else
262.ORDER: beforedepend ${DEPENDFILE}
263.ORDER: beforedepend afterdepend
264.endif
265.if !target(afterdepend)
266afterdepend:
267.endif
268.endif
269
270.if defined(SRCS)
271.if ${CTAGS:T} == "gtags"
272CLEANDEPENDFILES+=	GPATH GRTAGS GSYMS GTAGS
273.if defined(HTML)
274CLEANDEPENDDIRS+=	HTML
275.endif
276.else
277CLEANDEPENDFILES+=	tags
278.endif
279.endif
280.if !target(cleandepend)
281cleandepend:
282.if !empty(CLEANDEPENDFILES)
283	rm -f ${CLEANDEPENDFILES}
284.endif
285.if !empty(CLEANDEPENDDIRS)
286	rm -rf ${CLEANDEPENDDIRS}
287.endif
288.endif
289
290.if !target(checkdpadd) && (defined(DPADD) || defined(LDADD))
291_LDADD_FROM_DPADD=	${DPADD:R:T:C;^lib(.*)$;-l\1;g}
292# Ignore -Wl,--start-group/-Wl,--end-group as it might be required in the
293# LDADD list due to unresolved symbols
294_LDADD_CANONICALIZED=	${LDADD:N:R:T:C;^lib(.*)$;-l\1;g:N-Wl,--[es]*-group}
295checkdpadd:
296.if ${_LDADD_FROM_DPADD} != ${_LDADD_CANONICALIZED}
297	@echo ${.CURDIR}
298	@echo "DPADD -> ${_LDADD_FROM_DPADD}"
299	@echo "LDADD -> ${_LDADD_CANONICALIZED}"
300.endif
301.endif
302