b9cd412e7b
This will generate dependencies rather than depending on the previous behavior
of depending on the guessed OBJS: *.h dependecies or a user running
'make depend'.
Experimentation showed that depending only on headers was not enough and
prone to .ORDER errors. Downstream users may also have added
dependencies into beforedepend or afterdepend targets. The safest way to
ensure dependencies are generated before build is to run 'make depend'
beforehand rather than just depending on DPSRCS+SRCS.
Note that the OBJS_DEPEND_GUESS mechanism (a.k.a .if !exists(.depend) then
foo.o: *.h) is still useful as it improves incremental builds with missing
.depend.* files and allows 'make foo.o' to usually work, while this
'beforebuild: depend' ensures that the build will always find all dependencies.
The 'make foo.o' case has no means of a 'beforebuild' hook.
This also removes several hacks in the DIRDEPS_BUILD:
- NO_INSTALL_INCLUDES is no longer needed as it mostly was to work around
.ORDER problems with building the needed headers early.
- DIRDEPS_BUILD: It is no longer necesarry to track "local dependencies" in
Makefile.depend.
These were only in Makefile.depend for 'clean builds' since nothing would
generate the files due to skipping 'make depend' and early dependency
bugs that have been fixed, such as adding headers into SRCS for the
OBJS_DEPEND_GUESS mechanism. Normally if a .depend file does not exist then
a dependency is added by bsd.lib.mk/bsd.prog.mk from OBJS: *.h. However,
meta.autodep.mk creates a .depend file from created meta files and inserts
that into Makefile.depend. It also only tracks *.[ch] files though which can
miss some dependencies that are hooked into 'make depend'. This .depend
that is created then breaks incremental builds due to the !exists(.depend)
checks for OBJS_DEPEND_GUESS. The goal was to skip 'make depend' yet it only
really works the first time. After that files are not generated as expected,
which r288966 tried to address but was using buildfiles: rather than
beforebuild: and was reverted in r291725. As noted previously,
depending only on headers in beforebuild: would create .ORDER errors
in some cases.
meta.autodep.mk is still used to generate Makefile.depend though via:
gendirdeps: Makefile.depend
.END: gendirdeps
This commit allows removing all of the "local dependencies" in
Makefile.depend which cuts down on churn and removes some of the
arch-dependent Makefile.depend files.
The "local dependencies" were also problematic for bootstrapping.
Sponsored by: EMC / Isilon Storage Division
337 lines
9.4 KiB
Makefile
337 lines
9.4 KiB
Makefile
# $FreeBSD$
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#
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# The include file <bsd.dep.mk> handles Makefile dependencies.
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#
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#
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# +++ variables +++
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#
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# CLEANDEPENDDIRS Additional directories to remove for the cleandepend
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# target.
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#
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# CLEANDEPENDFILES Additional files to remove for the cleandepend target.
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#
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# CTAGS A tags file generation program [gtags]
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#
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# CTAGSFLAGS Options for ctags(1) [not set]
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#
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# DEPENDFILE dependencies file [.depend]
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#
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# GTAGSFLAGS Options for gtags(1) [-o]
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#
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# HTAGSFLAGS Options for htags(1) [not set]
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#
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# MKDEP Options for ${MKDEPCMD} [not set]
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#
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# MKDEPCMD Makefile dependency list program [mkdep]
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#
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# SRCS List of source files (c, c++, assembler)
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#
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# DPSRCS List of source files which are needed for generating
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# dependencies, ${SRCS} are always part of it.
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#
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# +++ targets +++
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#
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# cleandepend:
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# remove ${CLEANDEPENDFILES}; remove ${CLEANDEPENDDIRS} and all
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# contents.
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#
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# depend:
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# Make the dependencies for the source files, and store
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# them in the file ${DEPENDFILE}.
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#
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# tags:
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# In "ctags" mode, create a tags file for the source files.
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# In "gtags" mode, create a (GLOBAL) gtags file for the
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# source files. If HTML is defined, htags(1) is also run
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# after gtags(1).
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.if !target(__<bsd.init.mk>__)
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.error bsd.dep.mk cannot be included directly.
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.endif
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CTAGS?= gtags
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CTAGSFLAGS?=
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GTAGSFLAGS?= -o
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HTAGSFLAGS?=
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_MKDEPCC:= ${CC:N${CCACHE_BIN}}
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# XXX: DEPFLAGS can come out once Makefile.inc1 properly passes down
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# CXXFLAGS.
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.if !empty(DEPFLAGS)
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_MKDEPCC+= ${DEPFLAGS}
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.endif
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MKDEPCMD?= CC='${_MKDEPCC}' mkdep
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DEPENDFILE?= .depend
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.if ${MK_DIRDEPS_BUILD} == "no"
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.MAKE.DEPENDFILE= ${DEPENDFILE}
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.endif
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CLEANDEPENDFILES= ${DEPENDFILE} ${DEPENDFILE}.*
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# Keep `tags' here, before SRCS are mangled below for `depend'.
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.if !target(tags) && defined(SRCS) && !defined(NO_TAGS)
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tags: ${SRCS}
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.if ${CTAGS:T} == "gtags"
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@cd ${.CURDIR} && ${CTAGS} ${GTAGSFLAGS} ${.OBJDIR}
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.if defined(HTML)
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@cd ${.CURDIR} && htags ${HTAGSFLAGS} -d ${.OBJDIR} ${.OBJDIR}
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.endif
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.else
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@${CTAGS} ${CTAGSFLAGS} -f /dev/stdout \
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${.ALLSRC:N*.h} | sed "s;${.CURDIR}/;;" > ${.TARGET}
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.endif
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.endif
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# Skip reading .depend when not needed to speed up tree-walks
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# and simple lookups.
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.if !empty(.MAKEFLAGS:M-V${_V_READ_DEPEND}) || make(obj) || make(clean*) || \
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make(install*)
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_SKIP_READ_DEPEND= 1
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.if ${MK_DIRDEPS_BUILD} == "no"
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.MAKE.DEPENDFILE= /dev/null
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.endif
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.endif
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.if defined(SRCS)
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CLEANFILES?=
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.for _S in ${SRCS:N*.[dhly]}
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OBJS_DEPEND_GUESS.${_S:R}.o= ${_S}
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.if ${MK_FAST_DEPEND} == "no" && !exists(${.OBJDIR}/${DEPENDFILE})
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${_S:R}.o: ${OBJS_DEPEND_GUESS.${_S:R}.o}
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.endif
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.endfor
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# Lexical analyzers
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.for _LSRC in ${SRCS:M*.l:N*/*}
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.for _LC in ${_LSRC:R}.c
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${_LC}: ${_LSRC}
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${LEX} ${LFLAGS} -o${.TARGET} ${.ALLSRC}
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OBJS_DEPEND_GUESS.${_LC:R}.o= ${_LC}
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.if ${MK_FAST_DEPEND} == "no" && !exists(${.OBJDIR}/${DEPENDFILE})
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${_LC:R}.o: ${OBJS_DEPEND_GUESS.${_LC:R}.o}
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.endif
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SRCS:= ${SRCS:S/${_LSRC}/${_LC}/}
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CLEANFILES+= ${_LC}
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.endfor
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.endfor
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# Yacc grammars
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.for _YSRC in ${SRCS:M*.y:N*/*}
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.for _YC in ${_YSRC:R}.c
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SRCS:= ${SRCS:S/${_YSRC}/${_YC}/}
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CLEANFILES+= ${_YC}
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.if !empty(YFLAGS:M-d) && !empty(SRCS:My.tab.h)
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.ORDER: ${_YC} y.tab.h
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${_YC} y.tab.h: ${_YSRC}
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${YACC} ${YFLAGS} ${.ALLSRC}
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cp y.tab.c ${_YC}
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CLEANFILES+= y.tab.c y.tab.h
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.elif !empty(YFLAGS:M-d)
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.for _YH in ${_YC:R}.h
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.ORDER: ${_YC} ${_YH}
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${_YC} ${_YH}: ${_YSRC}
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${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
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SRCS+= ${_YH}
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CLEANFILES+= ${_YH}
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.endfor
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.else
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${_YC}: ${_YSRC}
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${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
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.endif
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OBJS_DEPEND_GUESS.${_YC:R}.o= ${_YC}
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.if ${MK_FAST_DEPEND} == "no" && !exists(${.OBJDIR}/${DEPENDFILE})
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${_YC:R}.o: ${OBJS_DEPEND_GUESS.${_YC:R}.o}
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.endif
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.endfor
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.endfor
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# DTrace probe definitions
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.if ${SRCS:M*.d}
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CFLAGS+= -I${.OBJDIR}
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.endif
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.for _DSRC in ${SRCS:M*.d:N*/*}
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.for _D in ${_DSRC:R}
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SRCS+= ${_D}.h
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${_D}.h: ${_DSRC}
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${DTRACE} ${DTRACEFLAGS} -h -s ${.ALLSRC}
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SRCS:= ${SRCS:S/^${_DSRC}$//}
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OBJS+= ${_D}.o
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CLEANFILES+= ${_D}.h ${_D}.o
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${_D}.o: ${_DSRC} ${OBJS:S/^${_D}.o$//}
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@rm -f ${.TARGET}
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${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
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.if defined(LIB)
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CLEANFILES+= ${_D}.So ${_D}.po
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${_D}.So: ${_DSRC} ${SOBJS:S/^${_D}.So$//}
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@rm -f ${.TARGET}
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${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
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${_D}.po: ${_DSRC} ${POBJS:S/^${_D}.po$//}
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@rm -f ${.TARGET}
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${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
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.endif
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.endfor
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.endfor
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.if !empty(.MAKE.MODE:Mmeta) && empty(.MAKE.MODE:Mnofilemon)
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_meta_filemon= 1
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.endif
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.if ${MK_FAST_DEPEND} == "yes"
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DEPEND_MP?= -MP
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# Handle OBJS=../somefile.o hacks. Just replace '/' rather than use :T to
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# avoid collisions.
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DEPEND_FILTER= C,/,_,g
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DEPENDSRCS= ${SRCS:M*.[cSC]} ${SRCS:M*.cxx} ${SRCS:M*.cpp} ${SRCS:M*.cc}
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.if !empty(DEPENDSRCS)
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DEPENDOBJS+= ${DEPENDSRCS:R:S,$,.o,}
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.endif
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DEPENDFILES_OBJS= ${DEPENDOBJS:O:u:${DEPEND_FILTER}:C/^/${DEPENDFILE}./}
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DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF${DEPENDFILE}.${.TARGET:${DEPEND_FILTER}}
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DEPEND_CFLAGS+= -MT${.TARGET}
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# Skip generating or including .depend.* files if in meta+filemon mode since
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# it will track dependencies itself. OBJS_DEPEND_GUESS is still used though.
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.if !defined(_meta_filemon)
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.if defined(.PARSEDIR)
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# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
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# as those are the only ones we will include.
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DEPEND_CFLAGS_CONDITION= !empty(DEPENDOBJS:M${.TARGET:${DEPEND_FILTER}})
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CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
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.else
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CFLAGS+= ${DEPEND_CFLAGS}
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.endif
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.if !defined(_SKIP_READ_DEPEND)
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.for __depend_obj in ${DEPENDFILES_OBJS}
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.sinclude "${__depend_obj}"
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.endfor
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.endif # !defined(_SKIP_READ_DEPEND)
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.endif # !defined(_meta_filemon)
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.endif # ${MK_FAST_DEPEND} == "yes"
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.endif # defined(SRCS)
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.if ${MK_DIRDEPS_BUILD} == "yes"
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# Prevent meta.autodep.mk from tracking "local dependencies".
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.depend:
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.include <meta.autodep.mk>
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# If using filemon then _EXTRADEPEND is skipped since it is not needed.
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.if empty(.MAKE.MODE:Mnofilemon)
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# this depend: bypasses that below
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# the dependency helps when bootstrapping
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depend: beforedepend ${DPSRCS} ${SRCS} afterdepend
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beforedepend:
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afterdepend: beforedepend
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.endif
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.endif
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# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet.
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# For meta+filemon the .meta file is checked for since it is the dependency
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# file used.
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.if ${MK_FAST_DEPEND} == "yes"
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.for __obj in ${DEPENDOBJS:O:u}
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.if (defined(_meta_filemon) && !exists(${.OBJDIR}/${__obj}.meta)) || \
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(!defined(_meta_filemon) && !exists(${.OBJDIR}/${DEPENDFILE}.${__obj}))
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${__obj}: ${OBJS_DEPEND_GUESS}
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${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
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.endif
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.endfor
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# Always run 'make depend' to generate dependencies early and to avoid the
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# need for manually running it. The dirdeps build should only do this in
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# sub-makes though since MAKELEVEL0 is for dirdeps calculations.
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.if ${MK_DIRDEPS_BUILD} == "no" || ${.MAKE.LEVEL} > 0
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beforebuild: depend
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.endif
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.endif # ${MK_FAST_DEPEND} == "yes"
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.if !target(depend)
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.if defined(SRCS)
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depend: beforedepend ${DEPENDFILE} afterdepend
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# Tell bmake not to look for generated files via .PATH
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.NOPATH: ${DEPENDFILE} ${DEPENDFILES_OBJS}
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.if ${MK_FAST_DEPEND} == "no"
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# Capture -include from CFLAGS.
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# This could be simpler with bmake :tW but needs to support fmake for MFC.
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_CFLAGS_INCLUDES= ${CFLAGS:Q:S/\\ /,/g:C/-include,/-include%/g:C/,/ /g:M-include*:C/%/ /g}
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_CXXFLAGS_INCLUDES= ${CXXFLAGS:Q:S/\\ /,/g:C/-include,/-include%/g:C/,/ /g:M-include*:C/%/ /g}
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# Different types of sources are compiled with slightly different flags.
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# Split up the sources, and filter out headers and non-applicable flags.
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MKDEP_CFLAGS= ${CFLAGS:M-nostdinc*} ${CFLAGS:M-[BIDU]*} ${CFLAGS:M-std=*} \
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${CFLAGS:M-ansi} ${_CFLAGS_INCLUDES}
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MKDEP_CXXFLAGS= ${CXXFLAGS:M-nostdinc*} ${CXXFLAGS:M-[BIDU]*} \
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${CXXFLAGS:M-std=*} ${CXXFLAGS:M-ansi} ${CXXFLAGS:M-stdlib=*} \
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${_CXXFLAGS_INCLUDES}
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.endif # ${MK_FAST_DEPEND} == "no"
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DPSRCS+= ${SRCS}
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# FAST_DEPEND will only generate a .depend if _EXTRADEPEND is used but
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# the target is created to allow 'make depend' to generate files.
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${DEPENDFILE}: ${DPSRCS}
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.if ${MK_FAST_DEPEND} == "no"
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rm -f ${DEPENDFILE}
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.if !empty(DPSRCS:M*.[cS])
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${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} \
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${MKDEP_CFLAGS} ${.ALLSRC:M*.[cS]}
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.endif
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.if !empty(DPSRCS:M*.cc) || !empty(DPSRCS:M*.C) || !empty(DPSRCS:M*.cpp) || \
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!empty(DPSRCS:M*.cxx)
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${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} \
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${MKDEP_CXXFLAGS} \
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${.ALLSRC:M*.cc} ${.ALLSRC:M*.C} ${.ALLSRC:M*.cpp} ${.ALLSRC:M*.cxx}
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.else
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.endif
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.endif # ${MK_FAST_DEPEND} == "no"
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.if target(_EXTRADEPEND)
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_EXTRADEPEND: .USE
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${DEPENDFILE}: _EXTRADEPEND
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.endif
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.ORDER: ${DEPENDFILE} afterdepend
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.else
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depend: beforedepend afterdepend
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.endif
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.if !target(beforedepend)
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beforedepend:
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.else
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.ORDER: beforedepend ${DEPENDFILE}
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.ORDER: beforedepend afterdepend
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.endif
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.if !target(afterdepend)
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afterdepend:
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.endif
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.endif
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.if defined(SRCS)
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.if ${CTAGS:T} == "gtags"
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CLEANDEPENDFILES+= GPATH GRTAGS GSYMS GTAGS
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.if defined(HTML)
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CLEANDEPENDDIRS+= HTML
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.endif
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.else
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CLEANDEPENDFILES+= tags
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.endif
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.endif
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.if !target(cleandepend)
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cleandepend:
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.if !empty(CLEANDEPENDFILES)
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rm -f ${CLEANDEPENDFILES}
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.endif
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.if !empty(CLEANDEPENDDIRS)
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rm -rf ${CLEANDEPENDDIRS}
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.endif
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.endif
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.if !target(checkdpadd) && (defined(DPADD) || defined(LDADD))
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_LDADD_FROM_DPADD= ${DPADD:R:T:C;^lib(.*)$;-l\1;g}
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# Ignore -Wl,--start-group/-Wl,--end-group as it might be required in the
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# LDADD list due to unresolved symbols
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_LDADD_CANONICALIZED= ${LDADD:N:R:T:C;^lib(.*)$;-l\1;g:N-Wl,--[es]*-group}
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checkdpadd:
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.if ${_LDADD_FROM_DPADD} != ${_LDADD_CANONICALIZED}
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@echo ${.CURDIR}
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@echo "DPADD -> ${_LDADD_FROM_DPADD}"
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@echo "LDADD -> ${_LDADD_CANONICALIZED}"
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.endif
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.endif
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