bsd.dep.mk revision 304717 
1# $FreeBSD: stable/11/share/mk/bsd.dep.mk 304717 2016-08-24 02:23:03Z 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}/;;" > ${.TARGET}
72.endif
73.endif
74
75.if !empty(.MAKE.MODE:Mmeta) && empty(.MAKE.MODE:Mnofilemon)
76_meta_filemon=	1
77.endif
78
79# Skip reading .depend when not needed to speed up tree-walks and simple
80# lookups.  For install, only do this if no other targets are specified.
81# Also skip generating or including .depend.* files if in meta+filemon mode
82# since it will track dependencies itself.  OBJS_DEPEND_GUESS is still used.
83.if !empty(.MAKEFLAGS:M-V${_V_READ_DEPEND}) || make(obj) || make(clean*) || \
84    ${.TARGETS:M*install*} == ${.TARGETS} || \
85    make(analyze) || defined(_meta_filemon)
86_SKIP_READ_DEPEND=	1
87.if ${MK_DIRDEPS_BUILD} == "no"
88.MAKE.DEPENDFILE=	/dev/null
89.endif
90.endif
91
92.if defined(SRCS)
93CLEANFILES?=
94
95.for _S in ${SRCS:N*.[dhly]}
96OBJS_DEPEND_GUESS.${_S:R}.o+=	${_S}
97.endfor
98
99# Lexical analyzers
100.for _LSRC in ${SRCS:M*.l:N*/*}
101.for _LC in ${_LSRC:R}.c
102${_LC}: ${_LSRC}
103	${LEX} ${LFLAGS} -o${.TARGET} ${.ALLSRC}
104OBJS_DEPEND_GUESS.${_LC:R}.o+=	${_LC}
105SRCS:=	${SRCS:S/${_LSRC}/${_LC}/}
106CLEANFILES+= ${_LC}
107.endfor
108.endfor
109
110# Yacc grammars
111.for _YSRC in ${SRCS:M*.y:N*/*}
112.for _YC in ${_YSRC:R}.c
113SRCS:=	${SRCS:S/${_YSRC}/${_YC}/}
114CLEANFILES+= ${_YC}
115.if !empty(YFLAGS:M-d) && !empty(SRCS:My.tab.h)
116.ORDER: ${_YC} y.tab.h
117y.tab.h: .NOMETA
118${_YC} y.tab.h: ${_YSRC}
119	${YACC} ${YFLAGS} ${.ALLSRC}
120	cp y.tab.c ${_YC}
121CLEANFILES+= y.tab.c y.tab.h
122.elif !empty(YFLAGS:M-d)
123.for _YH in ${_YC:R}.h
124.ORDER: ${_YC} ${_YH}
125${_YH}: .NOMETA
126${_YC} ${_YH}: ${_YSRC}
127	${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
128SRCS+=	${_YH}
129CLEANFILES+= ${_YH}
130.endfor
131.else
132${_YC}: ${_YSRC}
133	${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
134.endif
135OBJS_DEPEND_GUESS.${_YC:R}.o+=	${_YC}
136.endfor
137.endfor
138
139# DTrace probe definitions
140.if ${SRCS:M*.d}
141CFLAGS+=	-I${.OBJDIR}
142.endif
143.for _DSRC in ${SRCS:M*.d:N*/*}
144.for _D in ${_DSRC:R}
145SRCS+=	${_D}.h
146${_D}.h: ${_DSRC}
147	${DTRACE} ${DTRACEFLAGS} -h -s ${.ALLSRC}
148SRCS:=	${SRCS:S/^${_DSRC}$//}
149OBJS+=	${_D}.o
150CLEANFILES+= ${_D}.h ${_D}.o
151${_D}.o: ${_DSRC} ${OBJS:S/^${_D}.o$//}
152	@rm -f ${.TARGET}
153	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
154.if defined(LIB)
155CLEANFILES+= ${_D}.So ${_D}.po
156${_D}.So: ${_DSRC} ${SOBJS:S/^${_D}.So$//}
157	@rm -f ${.TARGET}
158	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
159${_D}.po: ${_DSRC} ${POBJS:S/^${_D}.po$//}
160	@rm -f ${.TARGET}
161	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
162.endif
163.endfor
164.endfor
165
166
167.if ${MAKE_VERSION} < 20160220
168DEPEND_MP?=	-MP
169.endif
170# Handle OBJS=../somefile.o hacks.  Just replace '/' rather than use :T to
171# avoid collisions.
172DEPEND_FILTER=	C,/,_,g
173DEPENDSRCS=	${SRCS:M*.[cSC]} ${SRCS:M*.cxx} ${SRCS:M*.cpp} ${SRCS:M*.cc}
174.if !empty(DEPENDSRCS)
175DEPENDOBJS+=	${DEPENDSRCS:R:S,$,.o,}
176.endif
177DEPENDFILES_OBJS=	${DEPENDOBJS:O:u:${DEPEND_FILTER}:C/^/${DEPENDFILE}./}
178DEPEND_CFLAGS+=	-MD ${DEPEND_MP} -MF${DEPENDFILE}.${.TARGET:${DEPEND_FILTER}}
179DEPEND_CFLAGS+=	-MT${.TARGET}
180.if !defined(_meta_filemon)
181.if defined(.PARSEDIR)
182# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
183# as those are the only ones we will include.
184DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:M${.TARGET:${DEPEND_FILTER}}}" != ""
185CFLAGS+=	${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
186.else
187CFLAGS+=	${DEPEND_CFLAGS}
188.endif
189.if !defined(_SKIP_READ_DEPEND)
190.for __depend_obj in ${DEPENDFILES_OBJS}
191.if ${MAKE_VERSION} < 20160220
192.sinclude "${.OBJDIR}/${__depend_obj}"
193.else
194.dinclude "${.OBJDIR}/${__depend_obj}"
195.endif
196.endfor
197.endif	# !defined(_SKIP_READ_DEPEND)
198.endif	# !defined(_meta_filemon)
199.endif	# defined(SRCS)
200
201.if ${MK_DIRDEPS_BUILD} == "yes"
202# Prevent meta.autodep.mk from tracking "local dependencies".
203.depend:
204.include <meta.autodep.mk>
205# If using filemon then _EXTRADEPEND is skipped since it is not needed.
206.if defined(_meta_filemon)
207# this depend: bypasses that below
208# the dependency helps when bootstrapping
209depend: beforedepend ${DPSRCS} ${SRCS} afterdepend
210beforedepend:
211afterdepend: beforedepend
212.endif
213.endif
214
215# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
216# For meta+filemon the .meta file is checked for since it is the dependency
217# file used.
218.for __obj in ${DEPENDOBJS:O:u}
219.if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
220    (!defined(_meta_filemon) && !exists(${.OBJDIR}/${DEPENDFILE}.${__obj}))
221${__obj}: ${OBJS_DEPEND_GUESS}
222${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
223.elif defined(_meta_filemon)
224# For meta mode we still need to know which file to depend on to avoid
225# ambiguous suffix transformation rules from .PATH.  Meta mode does not
226# use .depend files.  We really only need source files, not headers since
227# they are typically in SRCS/beforebuild already.  For target-specific
228# guesses do include headers though since they may not be in SRCS.
229${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
230${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
231.endif
232.endfor
233
234# Always run 'make depend' to generate dependencies early and to avoid the
235# need for manually running it.  The dirdeps build should only do this in
236# sub-makes though since MAKELEVEL0 is for dirdeps calculations.
237.if ${MK_DIRDEPS_BUILD} == "no" || ${.MAKE.LEVEL} > 0
238beforebuild: depend
239.endif
240
241.if !target(depend)
242.if defined(SRCS)
243depend: beforedepend ${DEPENDFILE} afterdepend
244
245# Tell bmake not to look for generated files via .PATH
246.NOPATH: ${DEPENDFILE} ${DEPENDFILES_OBJS}
247
248DPSRCS+= ${SRCS}
249# A .depend file will only be generated if there are commands in
250# beforedepend/_EXTRADEPEND/afterdepend  The _EXTRADEPEND target is
251# ignored if using meta+filemon since it handles all dependencies.  The other
252# targets are kept as they be used for generating something.  The target is
253# kept to allow 'make depend' to generate files.
254${DEPENDFILE}: ${DPSRCS}
255.if exists(${.OBJDIR}/${DEPENDFILE}) || \
256    ((commands(beforedepend) || \
257    (!defined(_meta_filemon) && commands(_EXTRADEPEND)) || \
258    commands(afterdepend)) && !empty(.MAKE.MODE:Mmeta))
259	rm -f ${DEPENDFILE}
260.endif
261.if !defined(_meta_filemon) && target(_EXTRADEPEND)
262_EXTRADEPEND: .USE
263${DEPENDFILE}: _EXTRADEPEND
264.endif
265
266.ORDER: ${DEPENDFILE} afterdepend
267.else
268depend: beforedepend afterdepend
269.endif
270.if !target(beforedepend)
271beforedepend:
272.else
273.ORDER: beforedepend ${DEPENDFILE}
274.ORDER: beforedepend afterdepend
275.endif
276.if !target(afterdepend)
277afterdepend:
278.endif
279.endif
280
281.if defined(SRCS)
282.if ${CTAGS:T} == "gtags"
283CLEANDEPENDFILES+=	GPATH GRTAGS GSYMS GTAGS
284.if defined(HTML)
285CLEANDEPENDDIRS+=	HTML
286.endif
287.else
288CLEANDEPENDFILES+=	tags
289.endif
290.endif
291.if !target(cleandepend)
292cleandepend:
293.if !empty(CLEANDEPENDFILES)
294	rm -f ${CLEANDEPENDFILES}
295.endif
296.if !empty(CLEANDEPENDDIRS)
297	rm -rf ${CLEANDEPENDDIRS}
298.endif
299.endif
300
301.if !target(checkdpadd) && (defined(DPADD) || defined(LDADD))
302_LDADD_FROM_DPADD=	${DPADD:R:T:C;^lib(.*)$;-l\1;g}
303# Ignore -Wl,--start-group/-Wl,--end-group as it might be required in the
304# LDADD list due to unresolved symbols
305_LDADD_CANONICALIZED=	${LDADD:N:R:T:C;^lib(.*)$;-l\1;g:N-Wl,--[es]*-group}
306checkdpadd:
307.if ${_LDADD_FROM_DPADD} != ${_LDADD_CANONICALIZED}
308	@echo ${.CURDIR}
309	@echo "DPADD -> ${_LDADD_FROM_DPADD}"
310	@echo "LDADD -> ${_LDADD_CANONICALIZED}"
311.endif
312.endif
313