contrib/bmake/mk/meta.autodep.mk

   1 # $Id: meta.autodep.mk,v 1.32 2012/11/13 00:44:26 sjg Exp $
   2
   3 #
   4 #       @(#) Copyright (c) 2010, Simon J. Gerraty
   5 #
   6 #       This file is provided in the hope that it will
   7 #       be of use.  There is absolutely NO WARRANTY.
   8 #       Permission to copy, redistribute or otherwise
   9 #       use this file is hereby granted provided that
  10 #       the above copyright notice and this notice are
  11 #       left intact.
  12 #
  13 #       Please send copies of changes and bug-fixes to:
  14 #       sjg@crufty.net
  15 #
  16
  17 _this ?= ${.PARSEFILE}
  18 .if !target(__${_this}__)
  19 __${_this}__: .NOTMAIN
  20
  21 .-include "local.autodep.mk"
  22
  23 .if defined(SRCS)
  24 # it would be nice to be able to query .SUFFIXES
  25 OBJ_EXTENSIONS+= .o .po .lo .So
  26
  27 # explicit dependencies help short-circuit .SUFFIX searches
  28 SRCS_DEP_FILTER+= N*.[hly]
  29 .for s in ${SRCS:${SRCS_DEP_FILTER:O:u:ts:}}
  30 .for e in ${OBJ_EXTENSIONS:O:u}
  31 .if !target(${s:T:R}$e)
  32 ${s:T:R}$e: $s
  33 .endif
  34 .endfor
  35 .endfor
  36 .endif
  37
  38 .if make(gendirdeps)
  39 # you are supposed to know what you are doing!
  40 UPDATE_DEPENDFILE = yes
  41 .elif !empty(.TARGETS) && !make(all)
  42 # do not update the *depend* files
  43 # unless we are building the entire directory or the default target.
  44 # NO means don't update .depend - or Makefile.depend*
  45 # no means update .depend but not Makefile.depend*
  46 UPDATE_DEPENDFILE = NO
  47 .elif ${.MAKEFLAGS:M-k} != ""
  48 # it is a bad idea to update anything
  49 UPDATE_DEPENDFILE = NO
  50 .endif
  51
  52 _CURDIR ?= ${.CURDIR}
  53 _DEPENDFILE := ${_CURDIR}/${.MAKE.DEPENDFILE:T}
  54
  55 .if ${.MAKE.LEVEL} == 0
  56 .if ${BUILD_AT_LEVEL0:Uyes:tl} == "no"
  57 UPDATE_DEPENDFILE = NO
  58 .endif
  59 .endif
  60 .if !exists(${_DEPENDFILE})
  61 _bootstrap_dirdeps = yes
  62 .endif
  63 _bootstrap_dirdeps ?= no
  64 UPDATE_DEPENDFILE ?= yes
  65
  66 .if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
  67 .info ${_DEPENDFILE:S,${SRCTOP}/,,} update=${UPDATE_DEPENDFILE}
  68 .endif
  69
  70 .if !empty(XMAKE_META_FILE)
  71 .if exists(${.OBJDIR}/${XMAKE_META_FILE})
  72 # we cannot get accurate dependencies from an update build
  73 UPDATE_DEPENDFILE = NO
  74 .else
  75 META_XTRAS += ${XMAKE_META_FILE}
  76 .endif
  77 .endif
  78
  79 .if ${_bootstrap_dirdeps} == "yes" || exists(${_DEPENDFILE})
  80 # if it isn't supposed to be touched by us the Makefile should have
  81 # UPDATE_DEPENDFILE = no
  82 WANT_UPDATE_DEPENDFILE ?= yes
  83 .endif
  84
  85 .if ${WANT_UPDATE_DEPENDFILE:Uno:tl} != "no"
  86 .if ${.MAKE.MODE:Mmeta*} == "" || ${.MAKE.MODE:M*read*} != ""
  87 UPDATE_DEPENDFILE = no
  88 .endif
  89
  90 .if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
  91 .info ${_DEPENDFILE:S,${SRCTOP}/,,} update=${UPDATE_DEPENDFILE}
  92 .endif
  93
  94 .if ${UPDATE_DEPENDFILE:tl} == "yes"
  95 # sometimes we want .meta files generated to aid debugging/error detection
  96 # but do not want to consider them for dependencies
  97 # for example the result of running configure
  98 # just make sure this is not empty
  99 META_FILE_FILTER ?= N.meta
 100
 101 .if !empty(DPADD)
 102 # if we have any non-libs in DPADD,
 103 # they probably need to be paid attention to
 104 .if !empty(DPLIBS)
 105 FORCE_DPADD = ${DPADD:${DPLIBS:${M_ListToSkip}}:${DPADD_LAST:${M_ListToSkip}}}
 106 .else
 107 _nonlibs := ${DPADD:T:Nlib*:N*include}
 108 .if !empty(_nonlibs)
 109 FORCE_DPADD += ${_nonlibs:@x@${DPADD:M*/$x}@}
 110 .endif
 111 .endif
 112 .endif
 113
 114 .if !make(gendirdeps)
 115 .END:   gendirdeps
 116 .endif
 117
 118 # if we don't have OBJS, then .depend isn't useful
 119 .if !target(.depend) && (!empty(OBJS) || ${.ALLTARGETS:M*.o} != "")
 120 # some makefiles and/or targets contain
 121 # circular dependencies if you dig too deep
 122 # (as meta mode is apt to do)
 123 # so we provide a means of supressing them.
 124 # the input to the loop below is target: dependency
 125 # with just one dependency per line.
 126 # Also some targets are not really local, or use random names.
 127 # Use local.autodep.mk to provide local additions!
 128 SUPPRESS_DEPEND += \
 129         ${SB:S,/,_,g}* \
 130         *:y.tab.c \
 131         *.c:*.c \
 132         *.h:*.h
 133
 134 .NOPATH:        .depend
 135 # we use ${.MAKE.META.CREATED} to trigger an update but
 136 # we process using ${.MAKE.META.FILES}
 137 # the double $$ defers initial evaluation
 138 # if necessary, we fake .po dependencies, just so the result
 139 # in Makefile.depend* is stable
 140 # The current objdir may be refered to in various ways
 141 OBJDIR_REFS += ${.OBJDIR} ${.OBJDIR:tA} ${_OBJDIR} ${RELOBJTOP}/${RELDIR}
 142 _depend = .depend
 143 # it would be nice to be able to get .SUFFIXES as ${.SUFFIXES}
 144 # we actually only care about the .SUFFIXES of files that might be
 145 # generated by tools like yacc.
 146 DEPEND_SUFFIXES += .c .h .cpp .hpp .cxx .hxx .cc .hh
 147 .depend: .NOMETA $${.MAKE.META.CREATED} ${_this}
 148         @echo "Updating $@: ${.OODATE:T:[1..8]}"
 149         @egrep -i '^R .*\.(${DEPEND_SUFFIXES:tl:O:u:S,^.,,:ts|})$$' /dev/null ${.MAKE.META.FILES:T:O:u:${META_FILE_FILTER:ts:}:M*o.meta} | \
 150         sed -e 's, \./, ,${OBJDIR_REFS:O:u:@d@;s, $d/, ,@};/\//d' \
 151                 -e 's,^\([^/][^/]*\).meta...[0-9]* ,\1: ,' | \
 152         sort -u | \
 153         while read t d; do \
 154                 case "$$d:" in $$t) continue;; esac; \
 155                 case "$$t$$d" in ${SUPPRESS_DEPEND:U.:O:u:ts|}) continue;; esac; \
 156                 echo $$t $$d; \
 157         done > $@.${.MAKE.PID}
 158         @case "${.MAKE.META.FILES:T:M*.po.*}" in \
 159         *.po.*) mv $@.${.MAKE.PID} $@;; \
 160         *) { cat $@.${.MAKE.PID}; \
 161         sed 's,\.So:,.o:,;s,\.o:,.po:,' $@.${.MAKE.PID}; } | sort -u > $@; \
 162         rm -f $@.${.MAKE.PID};; \
 163         esac
 164 .else
 165 # make sure this exists
 166 .depend:
 167 # do _not_ assume that .depend is in any fit state for us to use
 168 CAT_DEPEND = /dev/null
 169 .if ${.MAKE.LEVEL} > 0
 170 .export CAT_DEPEND
 171 .endif
 172 _depend =
 173 .endif
 174
 175 .if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
 176 .info ${_DEPENDFILE:S,${SRCTOP}/,,} _depend=${_depend}
 177 .endif
 178
 179 gendirdeps:     ${_DEPENDFILE}
 180
 181 .if !target(${_DEPENDFILE})
 182 .if ${_bootstrap_dirdeps} == "yes"
 183 # We are boot-strapping a new directory
 184 # Use DPADD to seed DIRDEPS
 185 .if !empty(DPADD)
 186 # anything which matches ${_OBJROOT}* but not ${_OBJTOP}*
 187 # needs to be qualified in DIRDEPS
 188 # The pseudo machine "host" is used for HOST_TARGET
 189 DIRDEPS = \
 190         ${DPADD:M${_OBJTOP}*:H:C,${_OBJTOP}[^/]*/,,:N.:O:u} \
 191         ${DPADD:M${_OBJROOT}*:N${_OBJTOP}*:H:S,${_OBJROOT},,:C,^([^/]+)/(.*),\2.\1,:S,${HOST_TARGET}$,host,:N.*:O:u}
 192
 193 .endif
 194 .endif
 195
 196 _gendirdeps_mutex =
 197 .if defined(NEED_GENDIRDEPS_MUTEX)
 198 # If a src dir gets built with multiple object dirs,
 199 # we need a mutex.  Obviously, this is best avoided.
 200 # Note if .MAKE.DEPENDFILE is common for all ${MACHINE}
 201 # you either need to mutex, or ensure only one machine builds at a time!
 202 # lockf is an example of a suitable tool
 203 LOCKF ?= /usr/bin/lockf
 204 .if exists(${LOCKF})
 205 GENDIRDEPS_MUTEXER ?= ${LOCKF} -k
 206 .endif
 207 .if empty(GENDIRDEPS_MUTEXER)
 208 .error NEED_GENDIRDEPS_MUTEX defined, but GENDIRDEPS_MUTEXER not set
 209 .else
 210 _gendirdeps_mutex = ${GENDIRDEPS_MUTEXER} ${GENDIRDEPS_MUTEX:U${_CURDIR}/Makefile}
 211 .endif
 212 .endif
 213
 214 # If we have META_XTRAS we most likely did not create them
 215 # but we need to behave as if we did.
 216 # Avoid adding glob patterns to .MAKE.META.CREATED though.
 217 .MAKE.META.CREATED += ${META_XTRAS:N*\**:O:u}
 218
 219 .if make(gendirdeps)
 220 META_FILES = *.meta
 221 .elif ${OPTIMIZE_OBJECT_META_FILES:Uno:tl} == "no"
 222 META_FILES = ${.MAKE.META.FILES:T:N.depend*:O:u}
 223 .else
 224 # if we have 1000's of .o.meta, .So.meta etc we need only look at one set
 225 # it is left as an exercise for the reader to work out what this does
 226 META_FILES = ${.MAKE.META.FILES:T:N.depend*:N*o.meta:O:u} \
 227         ${.MAKE.META.FILES:T:M*.${.MAKE.META.FILES:M*o.meta:R:E:O:u:[1]}.meta:O:u}
 228 .endif
 229
 230 .if ${DEBUG_AUTODEP:Uno:@m@${RELDIR:M$m}@} != ""
 231 .info ${_DEPENDFILE:S,${SRCTOP}/,,}: ${_depend} ${.PARSEDIR}/gendirdeps.mk ${META2DEPS} xtras=${META_XTRAS}
 232 .endif
 233
 234 .if ${.MAKE.LEVEL} > 0 && !empty(GENDIRDEPS_FILTER)
 235 .export GENDIRDEPS_FILTER
 236 .endif
 237
 238 # we might have .../ in MAKESYSPATH
 239 _makesyspath:= ${_PARSEDIR}
 240 ${_DEPENDFILE}: ${_depend} ${.PARSEDIR}/gendirdeps.mk  ${META2DEPS} $${.MAKE.META.CREATED}
 241         @echo Checking $@: ${.OODATE:T:[1..8]}
 242         @(cd . && \
 243         SKIP_GENDIRDEPS='${SKIP_GENDIRDEPS:O:u}' \
 244         DPADD='${FORCE_DPADD:O:u}' ${_gendirdeps_mutex} \
 245         MAKESYSPATH=${_makesyspath} \
 246         ${.MAKE} -f gendirdeps.mk RELDIR=${RELDIR} _DEPENDFILE=${_DEPENDFILE} \
 247         META_FILES='${META_XTRAS:T:O:u} ${META_FILES:T:O:u:${META_FILE_FILTER:ts:}}')
 248         @test -s $@ && touch $@; :
 249 .endif
 250
 251 .endif
 252 .endif
 253
 254 .if ${_bootstrap_dirdeps} == "yes"
 255 # make sure this is included at least once
 256 .include <dirdeps.mk>
 257 .else
 258 ${_DEPENDFILE}: .PRECIOUS
 259 .endif
 260
 261 CLEANFILES += *.meta filemon.* *.db
 262 .endif