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Annotation of generator/depcomp, revision 1.1

1.1     ! root        1: #! /bin/sh
        !             2: 
        !             3: # depcomp - compile a program generating dependencies as side-effects
        !             4: # Copyright 1999, 2000 Free Software Foundation, Inc.
        !             5: 
        !             6: # This program is free software; you can redistribute it and/or modify
        !             7: # it under the terms of the GNU General Public License as published by
        !             8: # the Free Software Foundation; either version 2, or (at your option)
        !             9: # any later version.
        !            10: 
        !            11: # This program is distributed in the hope that it will be useful,
        !            12: # but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: # GNU General Public License for more details.
        !            15: 
        !            16: # You should have received a copy of the GNU General Public License
        !            17: # along with this program; if not, write to the Free Software
        !            18: # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
        !            19: # 02111-1307, USA.
        !            20: 
        !            21: # As a special exception to the GNU General Public License, if you
        !            22: # distribute this file as part of a program that contains a
        !            23: # configuration script generated by Autoconf, you may include it under
        !            24: # the same distribution terms that you use for the rest of that program.
        !            25: 
        !            26: # Originally written by Alexandre Oliva <[email protected]>.
        !            27: 
        !            28: if test -z "$depmode" || test -z "$source" || test -z "$object"; then
        !            29:   echo "depcomp: Variables source, object and depmode must be set" 1>&2
        !            30:   exit 1
        !            31: fi
        !            32: # `libtool' can also be set to `yes' or `no'.
        !            33: 
        !            34: depfile=${depfile-`echo "$object" | sed 's,\([^/]*\)$,.deps/\1,;s/\.\([^.]*\)$/.P\1/'`}
        !            35: tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
        !            36: 
        !            37: rm -f "$tmpdepfile"
        !            38: 
        !            39: # Some modes work just like other modes, but use different flags.  We
        !            40: # parameterize here, but still list the modes in the big case below,
        !            41: # to make depend.m4 easier to write.  Note that we *cannot* use a case
        !            42: # here, because this file can only contain one case statement.
        !            43: if test "$depmode" = hp; then
        !            44:   # HP compiler uses -M and no extra arg.
        !            45:   gccflag=-M
        !            46:   depmode=gcc
        !            47: fi
        !            48: 
        !            49: if test "$depmode" = dashXmstdout; then
        !            50:    # This is just like dashmstdout with a different argument.
        !            51:    dashmflag=-xM
        !            52:    depmode=dashmstdout
        !            53: fi
        !            54: 
        !            55: case "$depmode" in
        !            56: gcc3)
        !            57: ## gcc 3 implements dependency tracking that does exactly what
        !            58: ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
        !            59: ## it if -MD -MP comes after the -MF stuff.  Hmm.
        !            60:   "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
        !            61:   stat=$?
        !            62:   if test $stat -eq 0; then :
        !            63:   else
        !            64:     rm -f "$tmpdepfile"
        !            65:     exit $stat
        !            66:   fi
        !            67:   mv "$tmpdepfile" "$depfile"
        !            68:   ;;
        !            69: 
        !            70: gcc)
        !            71: ## There are various ways to get dependency output from gcc.  Here's
        !            72: ## why we pick this rather obscure method:
        !            73: ## - Don't want to use -MD because we'd like the dependencies to end
        !            74: ##   up in a subdir.  Having to rename by hand is ugly.
        !            75: ##   (We might end up doing this anyway to support other compilers.)
        !            76: ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
        !            77: ##   -MM, not -M (despite what the docs say).
        !            78: ## - Using -M directly means running the compiler twice (even worse
        !            79: ##   than renaming).
        !            80:   if test -z "$gccflag"; then
        !            81:     gccflag=-MD,
        !            82:   fi
        !            83:   "$@" -Wp,"$gccflag$tmpdepfile"
        !            84:   stat=$?
        !            85:   if test $stat -eq 0; then :
        !            86:   else
        !            87:     rm -f "$tmpdepfile"
        !            88:     exit $stat
        !            89:   fi
        !            90:   rm -f "$depfile"
        !            91:   echo "$object : \\" > "$depfile"
        !            92:   alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
        !            93: ## The second -e expression handles DOS-style file names with drive letters.
        !            94:   sed -e 's/^[^:]*: / /' \
        !            95:       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
        !            96: ## This next piece of magic avoids the `deleted header file' problem.
        !            97: ## The problem is that when a header file which appears in a .P file
        !            98: ## is deleted, the dependency causes make to die (because there is
        !            99: ## typically no way to rebuild the header).  We avoid this by adding
        !           100: ## dummy dependencies for each header file.  Too bad gcc doesn't do
        !           101: ## this for us directly.
        !           102:   tr ' ' '
        !           103: ' < "$tmpdepfile" |
        !           104: ## Some versions of gcc put a space before the `:'.  On the theory
        !           105: ## that the space means something, we add a space to the output as
        !           106: ## well.
        !           107: ## Some versions of the HPUX 10.20 sed can't process this invocation
        !           108: ## correctly.  Breaking it into two sed invocations is a workaround.
        !           109:     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
        !           110:   rm -f "$tmpdepfile"
        !           111:   ;;
        !           112: 
        !           113: hp)
        !           114:   # This case exists only to let depend.m4 do its work.  It works by
        !           115:   # looking at the text of this script.  This case will never be run,
        !           116:   # since it is checked for above.
        !           117:   exit 1
        !           118:   ;;
        !           119: 
        !           120: sgi)
        !           121:   if test "$libtool" = yes; then
        !           122:     "$@" "-Wp,-MDupdate,$tmpdepfile"
        !           123:   else
        !           124:     "$@" -MDupdate "$tmpdepfile"
        !           125:   fi
        !           126:   stat=$?
        !           127:   if test $stat -eq 0; then :
        !           128:   else
        !           129:     rm -f "$tmpdepfile"
        !           130:     exit $stat
        !           131:   fi
        !           132:   rm -f "$depfile"
        !           133: 
        !           134:   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
        !           135:     echo "$object : \\" > "$depfile"
        !           136: 
        !           137:     # Clip off the initial element (the dependent).  Don't try to be
        !           138:     # clever and replace this with sed code, as IRIX sed won't handle
        !           139:     # lines with more than a fixed number of characters (4096 in
        !           140:     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
        !           141:     # the IRIX cc adds comments like `#:fec' to the end of the
        !           142:     # dependency line.
        !           143:     tr ' ' '
        !           144: ' < "$tmpdepfile" \
        !           145:     | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
        !           146:     tr '
        !           147: ' ' ' >> $depfile
        !           148:     echo >> $depfile
        !           149: 
        !           150:     # The second pass generates a dummy entry for each header file.
        !           151:     tr ' ' '
        !           152: ' < "$tmpdepfile" \
        !           153:    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
        !           154:    >> $depfile
        !           155:   else
        !           156:     # The sourcefile does not contain any dependencies, so just
        !           157:     # store a dummy comment line, to avoid errors with the Makefile
        !           158:     # "include basename.Plo" scheme.
        !           159:     echo "#dummy" > "$depfile"
        !           160:   fi
        !           161:   rm -f "$tmpdepfile"
        !           162:   ;;
        !           163: 
        !           164: aix)
        !           165:   # The C for AIX Compiler uses -M and outputs the dependencies
        !           166:   # in a .u file.  This file always lives in the current directory.
        !           167:   # Also, the AIX compiler puts `$object:' at the start of each line;
        !           168:   # $object doesn't have directory information.
        !           169:   stripped=`echo "$object" | sed -e 's,^.*/,,' -e 's/\(.*\)\..*$/\1/'`
        !           170:   tmpdepfile="$stripped.u"
        !           171:   outname="$stripped.o"
        !           172:   if test "$libtool" = yes; then
        !           173:     "$@" -Wc,-M
        !           174:   else
        !           175:     "$@" -M
        !           176:   fi
        !           177: 
        !           178:   stat=$?
        !           179:   if test $stat -eq 0; then :
        !           180:   else
        !           181:     rm -f "$tmpdepfile"
        !           182:     exit $stat
        !           183:   fi
        !           184: 
        !           185:   if test -f "$tmpdepfile"; then
        !           186:     # Each line is of the form `foo.o: dependent.h'.
        !           187:     # Do two passes, one to just change these to
        !           188:     # `$object: dependent.h' and one to simply `dependent.h:'.
        !           189:     sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
        !           190:     sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
        !           191:   else
        !           192:     # The sourcefile does not contain any dependencies, so just
        !           193:     # store a dummy comment line, to avoid errors with the Makefile
        !           194:     # "include basename.Plo" scheme.
        !           195:     echo "#dummy" > "$depfile"
        !           196:   fi
        !           197:   rm -f "$tmpdepfile"
        !           198:   ;;
        !           199: 
        !           200: tru64)
        !           201:    # The Tru64 AIX compiler uses -MD to generate dependencies as a side
        !           202:    # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
        !           203:    # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put 
        !           204:    # dependencies in `foo.d' instead, so we check for that too.
        !           205:    # Subdirectories are respected.
        !           206: 
        !           207:    tmpdepfile1="$object.d"
        !           208:    tmpdepfile2=`echo "$object" | sed -e 's/.o$/.d/'` 
        !           209:    if test "$libtool" = yes; then
        !           210:       "$@" -Wc,-MD
        !           211:    else
        !           212:       "$@" -MD
        !           213:    fi
        !           214: 
        !           215:    stat=$?
        !           216:    if test $stat -eq 0; then :
        !           217:    else
        !           218:       rm -f "$tmpdepfile1" "$tmpdepfile2"
        !           219:       exit $stat
        !           220:    fi
        !           221: 
        !           222:    if test -f "$tmpdepfile1"; then
        !           223:       tmpdepfile="$tmpdepfile1"
        !           224:    else
        !           225:       tmpdepfile="$tmpdepfile2"
        !           226:    fi
        !           227:    if test -f "$tmpdepfile"; then
        !           228:       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
        !           229:       # That's a space and a tab in the [].
        !           230:       sed -e 's,^.*\.[a-z]*:[  ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
        !           231:    else
        !           232:       echo "#dummy" > "$depfile"
        !           233:    fi
        !           234:    rm -f "$tmpdepfile"
        !           235:    ;;
        !           236: 
        !           237: #nosideeffect)
        !           238:   # This comment above is used by automake to tell side-effect
        !           239:   # dependency tracking mechanisms from slower ones.
        !           240: 
        !           241: dashmstdout)
        !           242:   # Important note: in order to support this mode, a compiler *must*
        !           243:   # always write the proprocessed file to stdout, regardless of -o,
        !           244:   # because we must use -o when running libtool.
        !           245:   test -z "$dashmflag" && dashmflag=-M
        !           246:   ( IFS=" "
        !           247:     case " $* " in
        !           248:     *" --mode=compile "*) # this is libtool, let us make it quiet
        !           249:       for arg
        !           250:       do # cycle over the arguments
        !           251:         case "$arg" in
        !           252:        "--mode=compile")
        !           253:          # insert --quiet before "--mode=compile"
        !           254:          set fnord "$@" --quiet
        !           255:          shift # fnord
        !           256:          ;;
        !           257:        esac
        !           258:        set fnord "$@" "$arg"
        !           259:        shift # fnord
        !           260:        shift # "$arg"
        !           261:       done
        !           262:       ;;
        !           263:     esac
        !           264:     "$@" $dashmflag | sed 's:^[^:]*\:[         ]*:'"$object"'\: :' > "$tmpdepfile"
        !           265:   ) &
        !           266:   proc=$!
        !           267:   "$@"
        !           268:   stat=$?
        !           269:   wait "$proc"
        !           270:   if test "$stat" != 0; then exit $stat; fi
        !           271:   rm -f "$depfile"
        !           272:   cat < "$tmpdepfile" > "$depfile"
        !           273:   tr ' ' '
        !           274: ' < "$tmpdepfile" | \
        !           275: ## Some versions of the HPUX 10.20 sed can't process this invocation
        !           276: ## correctly.  Breaking it into two sed invocations is a workaround.
        !           277:     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
        !           278:   rm -f "$tmpdepfile"
        !           279:   ;;
        !           280: 
        !           281: dashXmstdout)
        !           282:   # This case only exists to satisfy depend.m4.  It is never actually
        !           283:   # run, as this mode is specially recognized in the preamble.
        !           284:   exit 1
        !           285:   ;;
        !           286: 
        !           287: makedepend)
        !           288:   # X makedepend
        !           289:   (
        !           290:     shift
        !           291:     cleared=no
        !           292:     for arg in "$@"; do
        !           293:       case $cleared in no)
        !           294:         set ""; shift
        !           295:        cleared=yes
        !           296:       esac
        !           297:       case "$arg" in
        !           298:         -D*|-I*)
        !           299:          set fnord "$@" "$arg"; shift;;
        !           300:        -*)
        !           301:          ;;
        !           302:        *)
        !           303:          set fnord "$@" "$arg"; shift;;
        !           304:       esac
        !           305:     done
        !           306:     obj_suffix="`echo $object | sed 's/^.*\././'`"
        !           307:     touch "$tmpdepfile"
        !           308:     ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
        !           309:   ) &
        !           310:   proc=$!
        !           311:   "$@"
        !           312:   stat=$?
        !           313:   wait "$proc"
        !           314:   if test "$stat" != 0; then exit $stat; fi
        !           315:   rm -f "$depfile"
        !           316:   cat < "$tmpdepfile" > "$depfile"
        !           317:   tail +3 "$tmpdepfile" | tr ' ' '
        !           318: ' | \
        !           319: ## Some versions of the HPUX 10.20 sed can't process this invocation
        !           320: ## correctly.  Breaking it into two sed invocations is a workaround.
        !           321:     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
        !           322:   rm -f "$tmpdepfile" "$tmpdepfile".bak
        !           323:   ;;
        !           324: 
        !           325: cpp)
        !           326:   # Important note: in order to support this mode, a compiler *must*
        !           327:   # always write the proprocessed file to stdout, regardless of -o,
        !           328:   # because we must use -o when running libtool.
        !           329:   ( IFS=" "
        !           330:     case " $* " in
        !           331:     *" --mode=compile "*)
        !           332:       for arg
        !           333:       do # cycle over the arguments
        !           334:         case $arg in
        !           335:        "--mode=compile")
        !           336:          # insert --quiet before "--mode=compile"
        !           337:          set fnord "$@" --quiet
        !           338:          shift # fnord
        !           339:          ;;
        !           340:        esac
        !           341:        set fnord "$@" "$arg"
        !           342:        shift # fnord
        !           343:        shift # "$arg"
        !           344:       done
        !           345:       ;;
        !           346:     esac
        !           347:     "$@" -E |
        !           348:     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
        !           349:     sed '$ s: \\$::' > "$tmpdepfile"
        !           350:   ) &
        !           351:   proc=$!
        !           352:   "$@"
        !           353:   stat=$?
        !           354:   wait "$proc"
        !           355:   if test "$stat" != 0; then exit $stat; fi
        !           356:   rm -f "$depfile"
        !           357:   echo "$object : \\" > "$depfile"
        !           358:   cat < "$tmpdepfile" >> "$depfile"
        !           359:   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
        !           360:   rm -f "$tmpdepfile"
        !           361:   ;;
        !           362: 
        !           363: msvisualcpp)
        !           364:   # Important note: in order to support this mode, a compiler *must*
        !           365:   # always write the proprocessed file to stdout, regardless of -o,
        !           366:   # because we must use -o when running libtool.
        !           367:   ( IFS=" "
        !           368:     case " $* " in
        !           369:     *" --mode=compile "*)
        !           370:       for arg
        !           371:       do # cycle over the arguments
        !           372:         case $arg in
        !           373:        "--mode=compile")
        !           374:          # insert --quiet before "--mode=compile"
        !           375:          set fnord "$@" --quiet
        !           376:          shift # fnord
        !           377:          ;;
        !           378:        esac
        !           379:        set fnord "$@" "$arg"
        !           380:        shift # fnord
        !           381:        shift # "$arg"
        !           382:       done
        !           383:       ;;
        !           384:     esac
        !           385:     "$@" -E |
        !           386:     sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
        !           387:   ) &
        !           388:   proc=$!
        !           389:   "$@"
        !           390:   stat=$?
        !           391:   wait "$proc"
        !           392:   if test "$stat" != 0; then exit $stat; fi
        !           393:   rm -f "$depfile"
        !           394:   echo "$object : \\" > "$depfile"
        !           395:   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::   \1 \\:p' >> "$depfile"
        !           396:   echo "       " >> "$depfile"
        !           397:   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
        !           398:   rm -f "$tmpdepfile"
        !           399:   ;;
        !           400: 
        !           401: none)
        !           402:   exec "$@"
        !           403:   ;;
        !           404: 
        !           405: *)
        !           406:   echo "Unknown depmode $depmode" 1>&2
        !           407:   exit 1
        !           408:   ;;
        !           409: esac
        !           410: 
        !           411: exit 0

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