1# $FreeBSD$ 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# By default META_MODE is disabled in bmake if there is no OBJDIR 79# unless .MAKE.MODE contains "curdirOk=[^0nNfF]" 80.if defined(_meta_filemon) && ${.OBJDIR} == ${.CURDIR} && \ 81 (empty(.MAKE.MODE:tl:Mcurdirok=*) || \ 82 !empty(.MAKE.MODE:tl:Mcurdirok=[0NnFf]*)) 83.undef _meta_filemon 84.endif 85 86# Skip reading .depend when not needed to speed up tree-walks and simple 87# lookups. See _SKIP_BUILD logic in bsd.init.mk for more details. 88# Also skip generating or including .depend.* files if in meta+filemon mode 89# since it will track dependencies itself. OBJS_DEPEND_GUESS is still used 90# for _meta_filemon but not for _SKIP_DEPEND. 91.if !defined(NO_SKIP_DEPEND) && defined(_SKIP_BUILD) 92_SKIP_DEPEND= 1 93.endif 94.if ${MK_DIRDEPS_BUILD} == "no" 95.if defined(_SKIP_DEPEND) || defined(_meta_filemon) 96.MAKE.DEPENDFILE= /dev/null 97.endif 98.endif 99 100.if defined(SRCS) 101CLEANFILES?= 102 103.for _S in ${SRCS:N*.[dhly]} 104OBJS_DEPEND_GUESS.${_S:${OBJS_SRCS_FILTER:ts:}}.o+= ${_S} 105.endfor 106 107# Lexical analyzers 108.for _LSRC in ${SRCS:M*.l:N*/*} 109.for _LC in ${_LSRC:R}.c 110${_LC}: ${_LSRC} 111 ${LEX} ${LFLAGS} ${LFLAGS.${_LSRC}} -o${.TARGET} ${.ALLSRC} 112OBJS_DEPEND_GUESS.${_LC:R}.o+= ${_LC} 113SRCS:= ${SRCS:S/${_LSRC}/${_LC}/} 114CLEANFILES+= ${_LC} 115.endfor 116.endfor 117 118# Yacc grammars 119.for _YSRC in ${SRCS:M*.y:N*/*} 120.for _YC in ${_YSRC:R}.c 121SRCS:= ${SRCS:S/${_YSRC}/${_YC}/} 122CLEANFILES+= ${_YC} 123.if !empty(YFLAGS:M-d) && !empty(SRCS:My.tab.h) 124# Multi-output targets both expect a .meta file and will fight over it. Only 125# allow it on the .c file instead. 126y.tab.h: ${_YC} .NOMETA 127# Force rebuild the .c file if any of its other outputs are missing. 128.if !exists(y.tab.h) 129${_YC}: .PHONY .META 130.endif 131${_YC}: ${_YSRC} 132 ${YACC} ${YFLAGS} ${YFLAGS.${_YSRC}} ${.ALLSRC} 133 cp y.tab.c ${_YC} 134CLEANFILES+= y.tab.c y.tab.h 135.elif !empty(YFLAGS:M-d) 136.for _YH in ${_YC:R}.h 137# Multi-output targets both expect a .meta file and will fight over it. Only 138# allow it on the .c file instead. 139${_YH}: ${_YC} .NOMETA 140# Force rebuild the .c file if any of its other outputs are missing. 141.if !exists(${_YH}) 142${_YC}: .PHONY .META 143.endif 144${_YC}: ${_YSRC} 145 ${YACC} ${YFLAGS} ${YFLAGS.${_YSRC}} -o ${_YC} ${.ALLSRC} 146SRCS+= ${_YH} 147CLEANFILES+= ${_YH} 148.endfor 149.else 150${_YC}: ${_YSRC} 151 ${YACC} ${YFLAGS} ${YFLAGS.${_YSRC}} -o ${_YC} ${.ALLSRC} 152.endif 153OBJS_DEPEND_GUESS.${_YC:R}.o+= ${_YC} 154.endfor 155.endfor 156 157# DTrace probe definitions 158.if ${SRCS:M*.d} 159CFLAGS+= -I${.OBJDIR} 160.endif 161.for _DSRC in ${SRCS:M*.d:N*/*} 162.for _D in ${_DSRC:R} 163SRCS+= ${_D}.h 164${_D}.h: ${_DSRC} 165 ${DTRACE} ${DTRACEFLAGS} -h -s ${.ALLSRC} 166SRCS:= ${SRCS:S/^${_DSRC}$//} 167OBJS+= ${_D}.o 168CLEANFILES+= ${_D}.h ${_D}.o 169${_D}.o: ${_DSRC} ${OBJS:S/^${_D}.o$//} 170 @rm -f ${.TARGET} 171 ${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h} 172.if defined(LIB) 173CLEANFILES+= ${_D}.pico ${_D}.pieo ${_D}.po ${_D}.nossppico 174${_D}.pico: ${_DSRC} ${SOBJS:S/^${_D}.pico$//} 175 @rm -f ${.TARGET} 176 ${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h} 177${_D}.pieo: ${_DSRC} ${OBJS:S/^${_D}.pieo$//} 178 @rm -f ${.TARGET} 179 ${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h} 180${_D}.po: ${_DSRC} ${POBJS:S/^${_D}.po$//} 181 @rm -f ${.TARGET} 182 ${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h} 183${_D}.nossppico: ${_DSRC} ${SOBJS:S/^${_D}.nossppico$//} 184 @rm -f ${.TARGET} 185 ${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h} 186.endif 187.endfor 188.endfor 189.endif # defined(SRCS) 190 191.if ${MAKE_VERSION} < 20160220 192DEPEND_MP?= -MP 193.endif 194# Handle OBJS=../somefile.o hacks. Just replace '/' rather than use :T to 195# avoid collisions. 196DEPEND_FILTER= C,/,_,g 197.if !empty(OBJS) 198.if !defined(_ALLOW_ABSOLUTE_OBJ_PATH) && ${OBJS:M/*} 199# Absolute paths to OBJS should be an error inside ${SRCTOP}, but some users 200# might be relying on this feature, so add an opt-out mechanism. 201.if defined(SRCTOP) && ${OBJS:M${SRCTOP}*} 202.error "$$OBJS inside $$SRCTOP not allowed: ${OBJS:M${SRCTOP}*}" 203.elif ${OBJS:N${_ABSOLUTE_PATH_OBJS}:M/*} 204.error "$$OBJS absolute path not allowed: ${OBJS:N${_ABSOLUTE_PATH_OBJS}:M/*}. \ 205 If this is intended, add them to _ABSOLUTE_PATH_OBJS to silence this error\ 206 or define _ALLOW_ABSOLUTE_OBJ_PATH to disable this diagnostic." 207.endif 208.endif 209DEPENDOBJS+= ${OBJS} 210.else 211DEPENDSRCS+= ${SRCS:M*.[cSC]} ${SRCS:M*.cxx} ${SRCS:M*.cpp} ${SRCS:M*.cc} 212DEPENDSRCS+= ${DPSRCS:M*.[cSC]} ${DPSRCS:M*.cxx} ${DPSRCS:M*.cpp} ${DPSRCS:M*.cc} 213.if !empty(DEPENDSRCS) 214DEPENDOBJS+= ${DEPENDSRCS:${OBJS_SRCS_FILTER:ts:}:S,$,.o,} 215.endif 216.endif # !empty(OBJS) 217.if !empty(DEPENDOBJS) 218DEPENDFILES+= ${DEPENDOBJS:O:u:${DEPEND_FILTER}:C/^/${DEPENDFILE}./} 219.endif 220.if defined(_SKIP_DEPEND) 221# Don't bother statting any .meta files for .depend* 222${DEPENDOBJS}: .NOMETA 223${DEPENDFILE}: .NOMETA 224# Unset these to avoid looping/statting on them later. 225.undef DEPENDSRCS 226.undef DEPENDOBJS 227.undef DEPENDFILES 228.endif # defined(_SKIP_DEPEND) 229DEPEND_CFLAGS+= -MD ${DEPEND_MP} -MF${DEPENDFILE}.${.TARGET:${DEPEND_FILTER}} 230DEPEND_CFLAGS+= -MT${.TARGET} 231.if !defined(_meta_filemon) 232.if !empty(DEPEND_CFLAGS) 233# Only add in DEPEND_CFLAGS for CFLAGS on files we expect from DEPENDOBJS 234# as those are the only ones we will include. 235DEPEND_CFLAGS_CONDITION= "${DEPENDOBJS:${DEPEND_FILTER}:M${.TARGET:${DEPEND_FILTER}}}" != "" 236CFLAGS+= ${${DEPEND_CFLAGS_CONDITION}:?${DEPEND_CFLAGS}:} 237.endif 238.for __depend_obj in ${DEPENDFILES} 239.if ${MAKE_VERSION} < 20160220 240.sinclude "${.OBJDIR}/${__depend_obj}" 241.else 242.dinclude "${.OBJDIR}/${__depend_obj}" 243.endif 244.endfor 245.endif # !defined(_meta_filemon) 246 247.if ${MK_DIRDEPS_BUILD} == "yes" && ${.MAKE.DEPENDFILE} != "/dev/null" 248# Prevent meta.autodep.mk from tracking "local dependencies". 249.depend: 250.include <meta.autodep.mk> 251# If using filemon then _EXTRADEPEND is skipped since it is not needed. 252.if defined(_meta_filemon) 253# this depend: bypasses that below 254# the dependency helps when bootstrapping 255depend: beforedepend ${DPSRCS} ${SRCS} afterdepend 256beforedepend: 257afterdepend: beforedepend 258.endif 259.endif 260 261# Guess some dependencies for when no ${DEPENDFILE}.OBJ is generated yet. 262# For meta+filemon the .meta file is checked for since it is the dependency 263# file used. 264.for __obj in ${DEPENDOBJS:O:u} 265# If the obj has any '/', then replace with '_'. For meta files, this is 266# mimicing what bmake's meta_name() does and adding in the full path 267# as well to ensure that the expected meta file is read. 268.if ${__obj:M*/*} 269.if ${MAKE_VERSION} < 20171028 270_meta_obj= ${.OBJDIR:C,/,_,g}_${__obj:C,/,_,g}.meta 271.else 272_meta_obj= ${__obj:C,/,_,g}.meta 273.endif # ${MAKE_VERSION} < 20171028 274.else 275_meta_obj= ${__obj}.meta 276.endif # ${__obj:M*/*} 277_dep_obj= ${DEPENDFILE}.${__obj:${DEPEND_FILTER}} 278.if defined(_meta_filemon) 279_depfile= ${.OBJDIR}/${_meta_obj} 280.else 281_depfile= ${.OBJDIR}/${_dep_obj} 282.endif 283.if !exists(${_depfile}) || defined(_meta_filemon) 284# - Headers are normally built in beforebuild when included in DPSRCS or SRCS. 285# So we don't need it as a guessed dependency (it may lead to cyclic problems 286# if custom rules are defined). The only time this causes a problem is when 287# 'make foo.o' is ran. 288# - For meta mode we still need to know which file to depend on to avoid 289# ambiguous suffix transformation rules from .PATH. Meta mode does not 290# use .depend files when filemon is in use. 291.if !target(${__obj}) 292${__obj}: ${OBJS_DEPEND_GUESS} 293.endif 294${__obj}: ${OBJS_DEPEND_GUESS.${__obj}} 295.endif # !exists(${_depfile}) || defined(_meta_filemon) 296.endfor 297 298# Always run 'make depend' to generate dependencies early and to avoid the 299# need for manually running it. The dirdeps build should only do this in 300# sub-makes though since MAKELEVEL0 is for dirdeps calculations. 301.if ${MK_DIRDEPS_BUILD} == "no" || ${.MAKE.LEVEL} > 0 302beforebuild: depend 303.endif 304 305.if !target(depend) 306.if defined(SRCS) 307depend: beforedepend ${DEPENDFILE} afterdepend 308 309# Tell bmake not to look for generated files via .PATH 310.NOPATH: ${DEPENDFILE} ${DEPENDFILES} 311 312# A .depend file will only be generated if there are commands in 313# beforedepend/_EXTRADEPEND/afterdepend The _EXTRADEPEND target is 314# ignored if using meta+filemon since it handles all dependencies. The other 315# targets are kept as they be used for generating something. The target is 316# kept to allow 'make depend' to generate files. 317${DEPENDFILE}: ${SRCS} ${DPSRCS} 318.if !defined(_SKIP_DEPEND) 319.if exists(${.OBJDIR}/${DEPENDFILE}) || \ 320 ((commands(beforedepend) || \ 321 (!defined(_meta_filemon) && commands(_EXTRADEPEND)) || \ 322 commands(afterdepend)) && !empty(.MAKE.MODE:Mmeta)) 323 rm -f ${DEPENDFILE} 324.endif 325.endif 326.if !defined(_meta_filemon) && target(_EXTRADEPEND) 327_EXTRADEPEND: .USE 328${DEPENDFILE}: _EXTRADEPEND 329.endif 330 331.ORDER: ${DEPENDFILE} afterdepend 332.else 333depend: beforedepend afterdepend 334.endif 335.if !target(beforedepend) 336beforedepend: 337.else 338.ORDER: beforedepend ${DEPENDFILE} 339.ORDER: beforedepend afterdepend 340.endif 341.if !target(afterdepend) 342afterdepend: 343.endif 344.endif 345 346.if defined(SRCS) 347.if ${CTAGS:T} == "gtags" 348CLEANDEPENDFILES+= GPATH GRTAGS GSYMS GTAGS 349.if defined(HTML) 350CLEANDEPENDDIRS+= HTML 351.endif 352.else 353CLEANDEPENDFILES+= tags 354.endif 355.endif 356.if !target(cleandepend) 357cleandepend: 358.if !empty(CLEANDEPENDFILES) 359 rm -f ${CLEANDEPENDFILES} 360.endif 361.if !empty(CLEANDEPENDDIRS) 362 rm -rf ${CLEANDEPENDDIRS} 363.endif 364.endif 365.ORDER: cleandepend all 366.ORDER: cleandepend depend 367.if ${MK_AUTO_OBJ} == "yes" 368.ORDER: cleanobj depend 369.ORDER: cleandir depend 370.endif 371 372.if !target(checkdpadd) && (defined(DPADD) || defined(LDADD)) 373_LDADD_FROM_DPADD= ${DPADD:R:T:C;^lib(.*)$;-l\1;g} 374# Ignore -Wl,--start-group/-Wl,--end-group as it might be required in the 375# LDADD list due to unresolved symbols 376_LDADD_CANONICALIZED= ${LDADD:N:R:T:C;^lib(.*)$;-l\1;g:N-Wl,--[es]*-group} 377checkdpadd: 378.if ${_LDADD_FROM_DPADD} != ${_LDADD_CANONICALIZED} 379 @echo ${.CURDIR} 380 @echo "DPADD -> ${_LDADD_FROM_DPADD}" 381 @echo "LDADD -> ${_LDADD_CANONICALIZED}" 382.endif 383.endif 384