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https://git.FreeBSD.org/src.git
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db08bfce2f
Rtld is not compatible with SSP, and since we link libc_pic.a to rtld to have the basic support like memory and string copy functions, we have to both carefully limit libc use, and to provide the ssp support shims. This change makes the libc use in rtld more straighforward but still limited, and allows to remove the shims, to be done in the next commit. Submitted by: Luis Pires Reviewed by: bdrewery, brooks Differential revision: https://reviews.freebsd.org/D15283
354 lines
10 KiB
Makefile
354 lines
10 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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# 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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.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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.if ${MK_META_MODE} == "yes"
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CLEANDEPENDFILES+= *.meta
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.endif
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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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.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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# By default META_MODE is disabled in bmake if there is no OBJDIR
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# unless .MAKE.MODE contains "curdirOk=[^0nNfF]"
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.if defined(_meta_filemon) && ${.OBJDIR} == ${.CURDIR} && \
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(empty(.MAKE.MODE:tl:Mcurdirok=*) || \
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!empty(.MAKE.MODE:tl:Mcurdirok=[0NnFf]*))
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.undef _meta_filemon
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.endif
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# Skip reading .depend when not needed to speed up tree-walks and simple
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# lookups. See _SKIP_BUILD logic in bsd.init.mk for more details.
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# Also skip generating or including .depend.* files if in meta+filemon mode
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# since it will track dependencies itself. OBJS_DEPEND_GUESS is still used
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# for _meta_filemon but not for _SKIP_DEPEND.
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.if !defined(NO_SKIP_DEPEND) && defined(_SKIP_BUILD)
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_SKIP_DEPEND= 1
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.endif
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.if ${MK_DIRDEPS_BUILD} == "no"
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.if defined(_SKIP_DEPEND) || defined(_meta_filemon)
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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:${OBJS_SRCS_FILTER:ts:}}.o+= ${_S}
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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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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: ${_YC} y.tab.h
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y.tab.h: .NOMETA
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${_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} ${_YH}
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${_YH}: .NOMETA
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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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.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}.pico ${_D}.po ${_D}.nossppico
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${_D}.pico: ${_DSRC} ${SOBJS:S/^${_D}.pico$//}
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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 ${.ALLSRC:N*.h}
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${_D}.nossppico: ${_DSRC} ${SOBJS:S/^${_D}.nossppico$//}
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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 ${MAKE_VERSION} < 20160220
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DEPEND_MP?= -MP
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.endif
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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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DEPENDSRCS+= ${DPSRCS:M*.[cSC]} ${SRCS:M*.cxx} ${SRCS:M*.cpp} ${SRCS:M*.cc}
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.if !empty(DEPENDSRCS)
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DEPENDOBJS+= ${DEPENDSRCS:${OBJS_SRCS_FILTER:ts:}:S,$,.o,}
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.endif
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DEPENDFILES+= ${DEPENDOBJS:O:u:${DEPEND_FILTER}:C/^/${DEPENDFILE}./}
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.if defined(_SKIP_DEPEND)
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# Don't bother statting any .meta files for .depend*
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${DEPENDOBJS}: .NOMETA
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${DEPENDFILE}: .NOMETA
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# Unset these to avoid looping/statting on them later.
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.undef DEPENDSRCS
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.undef DEPENDOBJS
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.undef DEPENDFILES
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.endif # defined(_SKIP_DEPEND)
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DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF${DEPENDFILE}.${.TARGET:${DEPEND_FILTER}}
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DEPEND_CFLAGS+= -MT${.TARGET}
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.if !defined(_meta_filemon)
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.if !empty(DEPEND_CFLAGS)
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# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS
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# as those are the only ones we will include.
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DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:${DEPEND_FILTER}:M${.TARGET:${DEPEND_FILTER}}}" != ""
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CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:}
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.endif
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.for __depend_obj in ${DEPENDFILES}
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.if ${MAKE_VERSION} < 20160220
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.sinclude "${.OBJDIR}/${__depend_obj}"
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.else
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.dinclude "${.OBJDIR}/${__depend_obj}"
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.endif
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.endfor
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.endif # !defined(_meta_filemon)
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.endif # defined(SRCS)
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.if ${MK_DIRDEPS_BUILD} == "yes" && ${.MAKE.DEPENDFILE} != "/dev/null"
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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 defined(_meta_filemon)
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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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.for __obj in ${DEPENDOBJS:O:u}
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# If the obj has any '/', then replace with '_'. For meta files, this is
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# mimicing what bmake's meta_name() does and adding in the full path
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# as well to ensure that the expected meta file is read.
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.if ${__obj:M*/*}
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.if ${MAKE_VERSION} < 20171028
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_meta_obj= ${.OBJDIR:C,/,_,g}_${__obj:C,/,_,g}.meta
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.else
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_meta_obj= ${__obj:C,/,_,g}.meta
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.endif # ${MAKE_VERSION} < 20171028
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.else
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_meta_obj= ${__obj}.meta
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.endif # ${__obj:M*/*}
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_dep_obj= ${DEPENDFILE}.${__obj:${DEPEND_FILTER}}
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.if defined(_meta_filemon)
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_depfile= ${.OBJDIR}/${_meta_obj}
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.else
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_depfile= ${.OBJDIR}/${_dep_obj}
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.endif
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.if !exists(${_depfile})
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${__obj}: ${OBJS_DEPEND_GUESS}
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${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
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.elif defined(_meta_filemon)
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# For meta mode we still need to know which file to depend on to avoid
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# ambiguous suffix transformation rules from .PATH. Meta mode does not
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# use .depend files. We really only need source files, not headers since
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# they are typically in SRCS/beforebuild already. For target-specific
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# guesses do include headers though since they may not be in SRCS.
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${__obj}: ${OBJS_DEPEND_GUESS:N*.h}
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${__obj}: ${OBJS_DEPEND_GUESS.${__obj}}
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.endif # !exists(${_depfile})
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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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.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} ${DEPENDFILES}
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# A .depend file will only be generated if there are commands in
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# beforedepend/_EXTRADEPEND/afterdepend The _EXTRADEPEND target is
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# ignored if using meta+filemon since it handles all dependencies. The other
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# targets are kept as they be used for generating something. The target is
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# kept to allow 'make depend' to generate files.
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${DEPENDFILE}: ${SRCS} ${DPSRCS}
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.if !defined(_SKIP_DEPEND)
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.if exists(${.OBJDIR}/${DEPENDFILE}) || \
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((commands(beforedepend) || \
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(!defined(_meta_filemon) && commands(_EXTRADEPEND)) || \
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commands(afterdepend)) && !empty(.MAKE.MODE:Mmeta))
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rm -f ${DEPENDFILE}
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.endif
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.endif
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.if !defined(_meta_filemon) && target(_EXTRADEPEND)
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_EXTRADEPEND: .USE
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${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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.ORDER: cleandepend all
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.ORDER: cleandepend depend
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.if ${MK_AUTO_OBJ} == "yes"
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.ORDER: cleanobj depend
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.ORDER: cleandir depend
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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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