bsd.dep.mk revision 301935 
1# $FreeBSD: head/share/mk/bsd.dep.mk 301935 2016-06-15 23:57:50Z 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: ${_YC} y.tab.h
110y.tab.h: .NOMETA
111${_YC} y.tab.h: ${_YSRC}
112	${YACC} ${YFLAGS} ${.ALLSRC}
113	cp y.tab.c ${_YC}
114CLEANFILES+= y.tab.c y.tab.h
115.elif !empty(YFLAGS:M-d)
116.for _YH in ${_YC:R}.h
117.ORDER: ${_YC} ${_YH}
118${_YH}: .NOMETA
119${_YC} ${_YH}: ${_YSRC}
120	${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
121SRCS+=	${_YH}
122CLEANFILES+= ${_YH}
123.endfor
124.else
125${_YC}: ${_YSRC}
126	${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
127.endif
128OBJS_DEPEND_GUESS.${_YC:R}.o+=	${_YC}
129.endfor
130.endfor
131
132# DTrace probe definitions
133.if ${SRCS:M*.d}
134CFLAGS+=	-I${.OBJDIR}
135.endif
136.for _DSRC in ${SRCS:M*.d:N*/*}
137.for _D in ${_DSRC:R}
138SRCS+=	${_D}.h
139${_D}.h: ${_DSRC}
140	${DTRACE} ${DTRACEFLAGS} -h -s ${.ALLSRC}
141SRCS:=	${SRCS:S/^${_DSRC}$//}
142OBJS+=	${_D}.o
143CLEANFILES+= ${_D}.h ${_D}.o
144${_D}.o: ${_DSRC} ${OBJS:S/^${_D}.o$//}
145	@rm -f ${.TARGET}
146	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
147.if defined(LIB)
148CLEANFILES+= ${_D}.So ${_D}.po
149${_D}.So: ${_DSRC} ${SOBJS:S/^${_D}.So$//}
150	@rm -f ${.TARGET}
151	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
152${_D}.po: ${_DSRC} ${POBJS:S/^${_D}.po$//}
153	@rm -f ${.TARGET}
154	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
155.endif
156.endfor
157.endfor
158
159
160.if !empty(.MAKE.MODE:Mmeta) && empty(.MAKE.MODE:Mnofilemon)
161_meta_filemon=	1
162.endif
163.if ${MAKE_VERSION} < 20160220
164DEPEND_MP?=	-MP
165.endif
166# Handle OBJS=../somefile.o hacks.  Just replace '/' rather than use :T to
167# avoid collisions.
168DEPEND_FILTER=	C,/,_,g
169DEPENDSRCS=	${SRCS:M*.[cSC]} ${SRCS:M*.cxx} ${SRCS:M*.cpp} ${SRCS:M*.cc}
170.if !empty(DEPENDSRCS)
171DEPENDOBJS+=	${DEPENDSRCS:R:S,$,.o,}
172.endif
173DEPENDFILES_OBJS=	${DEPENDOBJS:O:u:${DEPEND_FILTER}:C/^/${DEPENDFILE}./}
174DEPEND_CFLAGS+=	-MD ${DEPEND_MP} -MF${DEPENDFILE}.${.TARGET:${DEPEND_FILTER}}
175DEPEND_CFLAGS+=	-MT${.TARGET}
176# Skip generating or including .depend.* files if in meta+filemon mode since
177# it will track dependencies itself.  OBJS_DEPEND_GUESS is still used though.
178.if !defined(_meta_filemon)
179.if defined(.PARSEDIR)
180# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
181# as those are the only ones we will include.
182DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET:${DEPEND_FILTER}}}" != ""
183CFLAGS+=	${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
184.else
185CFLAGS+=	${DEPEND_CFLAGS}
186.endif
187.if !defined(_SKIP_READ_DEPEND)
188.for __depend_obj in ${DEPENDFILES_OBJS}
189.if ${MAKE_VERSION} < 20160220
190.sinclude "${.OBJDIR}/${__depend_obj}"
191.else
192.dinclude "${.OBJDIR}/${__depend_obj}"
193.endif
194.endfor
195.endif	# !defined(_SKIP_READ_DEPEND)
196.endif	# !defined(_meta_filemon)
197.endif	# defined(SRCS)
198
199.if ${MK_DIRDEPS_BUILD} == "yes"
200# Prevent meta.autodep.mk from tracking "local dependencies".
201.depend:
202.include <meta.autodep.mk>
203# If using filemon then _EXTRADEPEND is skipped since it is not needed.
204.if empty(.MAKE.MODE:Mnofilemon)
205# this depend: bypasses that below
206# the dependency helps when bootstrapping
207depend: beforedepend ${DPSRCS} ${SRCS} afterdepend
208beforedepend:
209afterdepend: beforedepend
210.endif
211.endif
212
213# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
214# For meta+filemon the .meta file is checked for since it is the dependency
215# file used.
216.for __obj in ${DEPENDOBJS:O:u}
217.if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
218    (!defined(_meta_filemon) && !exists(${.OBJDIR}/${DEPENDFILE}.${__obj}))
219${__obj}: ${OBJS_DEPEND_GUESS}
220${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
221.elif defined(_meta_filemon)
222# For meta mode we still need to know which file to depend on to avoid
223# ambiguous suffix transformation rules from .PATH.  Meta mode does not
224# use .depend files.  We really only need source files, not headers since
225# they are typically in SRCS/beforebuild already.  For target-specific
226# guesses do include headers though since they may not be in SRCS.
227${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
228${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
229.endif
230.endfor
231
232# Always run 'make depend' to generate dependencies early and to avoid the
233# need for manually running it.  The dirdeps build should only do this in
234# sub-makes though since MAKELEVEL0 is for dirdeps calculations.
235.if ${MK_DIRDEPS_BUILD} == "no" || ${.MAKE.LEVEL} > 0
236beforebuild: depend
237.endif
238
239.if !target(depend)
240.if defined(SRCS)
241depend: beforedepend ${DEPENDFILE} afterdepend
242
243# Tell bmake not to look for generated files via .PATH
244.NOPATH: ${DEPENDFILE} ${DEPENDFILES_OBJS}
245
246DPSRCS+= ${SRCS}
247# A .depend file will only be generated if there are commands in
248# beforedepend/_EXTRADEPEND/afterdepend.  The target is kept
249# to allow 'make depend' to generate files.
250${DEPENDFILE}: ${DPSRCS}
251.if exists(${.OBJDIR}/${DEPENDFILE}) || \
252    ((commands(beforedepend) || commands(_EXTRADEPEND) || \
253    commands(afterdepend)) && !empty(.MAKE.MODE:Mmeta))
254	rm -f ${DEPENDFILE}
255.endif
256.if target(_EXTRADEPEND)
257_EXTRADEPEND: .USE
258${DEPENDFILE}: _EXTRADEPEND
259.endif
260
261.ORDER: ${DEPENDFILE} afterdepend
262.else
263depend: beforedepend afterdepend
264.endif
265.if !target(beforedepend)
266beforedepend:
267.else
268.ORDER: beforedepend ${DEPENDFILE}
269.ORDER: beforedepend afterdepend
270.endif
271.if !target(afterdepend)
272afterdepend:
273.endif
274.endif
275
276.if defined(SRCS)
277.if ${CTAGS:T} == "gtags"
278CLEANDEPENDFILES+=	GPATH GRTAGS GSYMS GTAGS
279.if defined(HTML)
280CLEANDEPENDDIRS+=	HTML
281.endif
282.else
283CLEANDEPENDFILES+=	tags
284.endif
285.endif
286.if !target(cleandepend)
287cleandepend:
288.if !empty(CLEANDEPENDFILES)
289	rm -f ${CLEANDEPENDFILES}
290.endif
291.if !empty(CLEANDEPENDDIRS)
292	rm -rf ${CLEANDEPENDDIRS}
293.endif
294.endif
295
296.if !target(checkdpadd) && (defined(DPADD) || defined(LDADD))
297_LDADD_FROM_DPADD=	${DPADD:R:T:C;^lib(.*)$;-l\1;g}
298# Ignore -Wl,--start-group/-Wl,--end-group as it might be required in the
299# LDADD list due to unresolved symbols
300_LDADD_CANONICALIZED=	${LDADD:N:R:T:C;^lib(.*)$;-l\1;g:N-Wl,--[es]*-group}
301checkdpadd:
302.if ${_LDADD_FROM_DPADD} != ${_LDADD_CANONICALIZED}
303	@echo ${.CURDIR}
304	@echo "DPADD -> ${_LDADD_FROM_DPADD}"
305	@echo "LDADD -> ${_LDADD_CANONICALIZED}"
306.endif
307.endif
308