Annotation of embedaddon/pcre/depcomp, revision 1.1.1.2

1.1       misho       1: #! /bin/sh
                      2: # depcomp - compile a program generating dependencies as side-effects
                      3: 
1.1.1.2 ! misho       4: scriptversion=2012-10-18.11; # UTC
1.1       misho       5: 
1.1.1.2 ! misho       6: # Copyright (C) 1999-2013 Free Software Foundation, Inc.
1.1       misho       7: 
                      8: # This program is free software; you can redistribute it and/or modify
                      9: # it under the terms of the GNU General Public License as published by
                     10: # the Free Software Foundation; either version 2, or (at your option)
                     11: # any later version.
                     12: 
                     13: # This program is distributed in the hope that it will be useful,
                     14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     16: # GNU General Public License for more details.
                     17: 
                     18: # You should have received a copy of the GNU General Public License
                     19: # along with this program.  If not, see <http://www.gnu.org/licenses/>.
                     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 <oliva@dcc.unicamp.br>.
                     27: 
                     28: case $1 in
                     29:   '')
1.1.1.2 ! misho      30:     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
        !            31:     exit 1;
        !            32:     ;;
1.1       misho      33:   -h | --h*)
                     34:     cat <<\EOF
                     35: Usage: depcomp [--help] [--version] PROGRAM [ARGS]
                     36: 
                     37: Run PROGRAMS ARGS to compile a file, generating dependencies
                     38: as side-effects.
                     39: 
                     40: Environment variables:
                     41:   depmode     Dependency tracking mode.
1.1.1.2 ! misho      42:   source      Source file read by 'PROGRAMS ARGS'.
        !            43:   object      Object file output by 'PROGRAMS ARGS'.
1.1       misho      44:   DEPDIR      directory where to store dependencies.
                     45:   depfile     Dependency file to output.
1.1.1.2 ! misho      46:   tmpdepfile  Temporary file to use when outputting dependencies.
1.1       misho      47:   libtool     Whether libtool is used (yes/no).
                     48: 
                     49: Report bugs to <bug-automake@gnu.org>.
                     50: EOF
                     51:     exit $?
                     52:     ;;
                     53:   -v | --v*)
                     54:     echo "depcomp $scriptversion"
                     55:     exit $?
                     56:     ;;
                     57: esac
                     58: 
1.1.1.2 ! misho      59: # Get the directory component of the given path, and save it in the
        !            60: # global variables '$dir'.  Note that this directory component will
        !            61: # be either empty or ending with a '/' character.  This is deliberate.
        !            62: set_dir_from ()
        !            63: {
        !            64:   case $1 in
        !            65:     */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
        !            66:       *) dir=;;
        !            67:   esac
        !            68: }
        !            69: 
        !            70: # Get the suffix-stripped basename of the given path, and save it the
        !            71: # global variable '$base'.
        !            72: set_base_from ()
        !            73: {
        !            74:   base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
        !            75: }
        !            76: 
        !            77: # If no dependency file was actually created by the compiler invocation,
        !            78: # we still have to create a dummy depfile, to avoid errors with the
        !            79: # Makefile "include basename.Plo" scheme.
        !            80: make_dummy_depfile ()
        !            81: {
        !            82:   echo "#dummy" > "$depfile"
        !            83: }
        !            84: 
        !            85: # Factor out some common post-processing of the generated depfile.
        !            86: # Requires the auxiliary global variable '$tmpdepfile' to be set.
        !            87: aix_post_process_depfile ()
        !            88: {
        !            89:   # If the compiler actually managed to produce a dependency file,
        !            90:   # post-process it.
        !            91:   if test -f "$tmpdepfile"; then
        !            92:     # Each line is of the form 'foo.o: dependency.h'.
        !            93:     # Do two passes, one to just change these to
        !            94:     #   $object: dependency.h
        !            95:     # and one to simply output
        !            96:     #   dependency.h:
        !            97:     # which is needed to avoid the deleted-header problem.
        !            98:     { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
        !            99:       sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
        !           100:     } > "$depfile"
        !           101:     rm -f "$tmpdepfile"
        !           102:   else
        !           103:     make_dummy_depfile
        !           104:   fi
        !           105: }
        !           106: 
        !           107: # A tabulation character.
        !           108: tab='  '
        !           109: # A newline character.
        !           110: nl='
        !           111: '
        !           112: # Character ranges might be problematic outside the C locale.
        !           113: # These definitions help.
        !           114: upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
        !           115: lower=abcdefghijklmnopqrstuvwxyz
        !           116: digits=0123456789
        !           117: alpha=${upper}${lower}
        !           118: 
1.1       misho     119: if test -z "$depmode" || test -z "$source" || test -z "$object"; then
                    120:   echo "depcomp: Variables source, object and depmode must be set" 1>&2
                    121:   exit 1
                    122: fi
                    123: 
                    124: # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
                    125: depfile=${depfile-`echo "$object" |
                    126:   sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
                    127: tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
                    128: 
                    129: rm -f "$tmpdepfile"
                    130: 
1.1.1.2 ! misho     131: # Avoid interferences from the environment.
        !           132: gccflag= dashmflag=
        !           133: 
1.1       misho     134: # Some modes work just like other modes, but use different flags.  We
                    135: # parameterize here, but still list the modes in the big case below,
                    136: # to make depend.m4 easier to write.  Note that we *cannot* use a case
                    137: # here, because this file can only contain one case statement.
                    138: if test "$depmode" = hp; then
                    139:   # HP compiler uses -M and no extra arg.
                    140:   gccflag=-M
                    141:   depmode=gcc
                    142: fi
                    143: 
                    144: if test "$depmode" = dashXmstdout; then
1.1.1.2 ! misho     145:   # This is just like dashmstdout with a different argument.
        !           146:   dashmflag=-xM
        !           147:   depmode=dashmstdout
1.1       misho     148: fi
                    149: 
                    150: cygpath_u="cygpath -u -f -"
                    151: if test "$depmode" = msvcmsys; then
1.1.1.2 ! misho     152:   # This is just like msvisualcpp but w/o cygpath translation.
        !           153:   # Just convert the backslash-escaped backslashes to single forward
        !           154:   # slashes to satisfy depend.m4
        !           155:   cygpath_u='sed s,\\\\,/,g'
        !           156:   depmode=msvisualcpp
        !           157: fi
        !           158: 
        !           159: if test "$depmode" = msvc7msys; then
        !           160:   # This is just like msvc7 but w/o cygpath translation.
        !           161:   # Just convert the backslash-escaped backslashes to single forward
        !           162:   # slashes to satisfy depend.m4
        !           163:   cygpath_u='sed s,\\\\,/,g'
        !           164:   depmode=msvc7
        !           165: fi
        !           166: 
        !           167: if test "$depmode" = xlc; then
        !           168:   # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
        !           169:   gccflag=-qmakedep=gcc,-MF
        !           170:   depmode=gcc
1.1       misho     171: fi
                    172: 
                    173: case "$depmode" in
                    174: gcc3)
                    175: ## gcc 3 implements dependency tracking that does exactly what
                    176: ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
                    177: ## it if -MD -MP comes after the -MF stuff.  Hmm.
                    178: ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
                    179: ## the command line argument order; so add the flags where they
                    180: ## appear in depend2.am.  Note that the slowdown incurred here
                    181: ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
                    182:   for arg
                    183:   do
                    184:     case $arg in
                    185:     -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
                    186:     *)  set fnord "$@" "$arg" ;;
                    187:     esac
                    188:     shift # fnord
                    189:     shift # $arg
                    190:   done
                    191:   "$@"
                    192:   stat=$?
1.1.1.2 ! misho     193:   if test $stat -ne 0; then
1.1       misho     194:     rm -f "$tmpdepfile"
                    195:     exit $stat
                    196:   fi
                    197:   mv "$tmpdepfile" "$depfile"
                    198:   ;;
                    199: 
                    200: gcc)
1.1.1.2 ! misho     201: ## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
        !           202: ## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
        !           203: ## (see the conditional assignment to $gccflag above).
1.1       misho     204: ## There are various ways to get dependency output from gcc.  Here's
                    205: ## why we pick this rather obscure method:
                    206: ## - Don't want to use -MD because we'd like the dependencies to end
                    207: ##   up in a subdir.  Having to rename by hand is ugly.
                    208: ##   (We might end up doing this anyway to support other compilers.)
                    209: ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
1.1.1.2 ! misho     210: ##   -MM, not -M (despite what the docs say).  Also, it might not be
        !           211: ##   supported by the other compilers which use the 'gcc' depmode.
1.1       misho     212: ## - Using -M directly means running the compiler twice (even worse
                    213: ##   than renaming).
                    214:   if test -z "$gccflag"; then
                    215:     gccflag=-MD,
                    216:   fi
                    217:   "$@" -Wp,"$gccflag$tmpdepfile"
                    218:   stat=$?
1.1.1.2 ! misho     219:   if test $stat -ne 0; then
1.1       misho     220:     rm -f "$tmpdepfile"
                    221:     exit $stat
                    222:   fi
                    223:   rm -f "$depfile"
                    224:   echo "$object : \\" > "$depfile"
1.1.1.2 ! misho     225:   # The second -e expression handles DOS-style file names with drive
        !           226:   # letters.
1.1       misho     227:   sed -e 's/^[^:]*: / /' \
                    228:       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
1.1.1.2 ! misho     229: ## This next piece of magic avoids the "deleted header file" problem.
1.1       misho     230: ## The problem is that when a header file which appears in a .P file
                    231: ## is deleted, the dependency causes make to die (because there is
                    232: ## typically no way to rebuild the header).  We avoid this by adding
                    233: ## dummy dependencies for each header file.  Too bad gcc doesn't do
                    234: ## this for us directly.
1.1.1.2 ! misho     235: ## Some versions of gcc put a space before the ':'.  On the theory
1.1       misho     236: ## that the space means something, we add a space to the output as
1.1.1.2 ! misho     237: ## well.  hp depmode also adds that space, but also prefixes the VPATH
        !           238: ## to the object.  Take care to not repeat it in the output.
1.1       misho     239: ## Some versions of the HPUX 10.20 sed can't process this invocation
                    240: ## correctly.  Breaking it into two sed invocations is a workaround.
1.1.1.2 ! misho     241:   tr ' ' "$nl" < "$tmpdepfile" \
        !           242:     | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
        !           243:     | sed -e 's/$/ :/' >> "$depfile"
1.1       misho     244:   rm -f "$tmpdepfile"
                    245:   ;;
                    246: 
                    247: hp)
                    248:   # This case exists only to let depend.m4 do its work.  It works by
                    249:   # looking at the text of this script.  This case will never be run,
                    250:   # since it is checked for above.
                    251:   exit 1
                    252:   ;;
                    253: 
                    254: sgi)
                    255:   if test "$libtool" = yes; then
                    256:     "$@" "-Wp,-MDupdate,$tmpdepfile"
                    257:   else
                    258:     "$@" -MDupdate "$tmpdepfile"
                    259:   fi
                    260:   stat=$?
1.1.1.2 ! misho     261:   if test $stat -ne 0; then
1.1       misho     262:     rm -f "$tmpdepfile"
                    263:     exit $stat
                    264:   fi
                    265:   rm -f "$depfile"
                    266: 
                    267:   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
                    268:     echo "$object : \\" > "$depfile"
                    269:     # Clip off the initial element (the dependent).  Don't try to be
                    270:     # clever and replace this with sed code, as IRIX sed won't handle
                    271:     # lines with more than a fixed number of characters (4096 in
                    272:     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
1.1.1.2 ! misho     273:     # the IRIX cc adds comments like '#:fec' to the end of the
1.1       misho     274:     # dependency line.
1.1.1.2 ! misho     275:     tr ' ' "$nl" < "$tmpdepfile" \
        !           276:       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
        !           277:       | tr "$nl" ' ' >> "$depfile"
1.1       misho     278:     echo >> "$depfile"
                    279:     # The second pass generates a dummy entry for each header file.
1.1.1.2 ! misho     280:     tr ' ' "$nl" < "$tmpdepfile" \
        !           281:       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
        !           282:       >> "$depfile"
1.1       misho     283:   else
1.1.1.2 ! misho     284:     make_dummy_depfile
1.1       misho     285:   fi
                    286:   rm -f "$tmpdepfile"
                    287:   ;;
                    288: 
1.1.1.2 ! misho     289: xlc)
        !           290:   # This case exists only to let depend.m4 do its work.  It works by
        !           291:   # looking at the text of this script.  This case will never be run,
        !           292:   # since it is checked for above.
        !           293:   exit 1
        !           294:   ;;
        !           295: 
1.1       misho     296: aix)
                    297:   # The C for AIX Compiler uses -M and outputs the dependencies
                    298:   # in a .u file.  In older versions, this file always lives in the
1.1.1.2 ! misho     299:   # current directory.  Also, the AIX compiler puts '$object:' at the
1.1       misho     300:   # start of each line; $object doesn't have directory information.
                    301:   # Version 6 uses the directory in both cases.
1.1.1.2 ! misho     302:   set_dir_from "$object"
        !           303:   set_base_from "$object"
1.1       misho     304:   if test "$libtool" = yes; then
                    305:     tmpdepfile1=$dir$base.u
                    306:     tmpdepfile2=$base.u
                    307:     tmpdepfile3=$dir.libs/$base.u
                    308:     "$@" -Wc,-M
                    309:   else
                    310:     tmpdepfile1=$dir$base.u
                    311:     tmpdepfile2=$dir$base.u
                    312:     tmpdepfile3=$dir$base.u
                    313:     "$@" -M
                    314:   fi
                    315:   stat=$?
1.1.1.2 ! misho     316:   if test $stat -ne 0; then
1.1       misho     317:     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
                    318:     exit $stat
                    319:   fi
                    320: 
                    321:   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
                    322:   do
                    323:     test -f "$tmpdepfile" && break
                    324:   done
1.1.1.2 ! misho     325:   aix_post_process_depfile
        !           326:   ;;
        !           327: 
        !           328: tcc)
        !           329:   # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
        !           330:   # FIXME: That version still under development at the moment of writing.
        !           331:   #        Make that this statement remains true also for stable, released
        !           332:   #        versions.
        !           333:   # It will wrap lines (doesn't matter whether long or short) with a
        !           334:   # trailing '\', as in:
        !           335:   #
        !           336:   #   foo.o : \
        !           337:   #    foo.c \
        !           338:   #    foo.h \
        !           339:   #
        !           340:   # It will put a trailing '\' even on the last line, and will use leading
        !           341:   # spaces rather than leading tabs (at least since its commit 0394caf7
        !           342:   # "Emit spaces for -MD").
        !           343:   "$@" -MD -MF "$tmpdepfile"
        !           344:   stat=$?
        !           345:   if test $stat -ne 0; then
        !           346:     rm -f "$tmpdepfile"
        !           347:     exit $stat
1.1       misho     348:   fi
1.1.1.2 ! misho     349:   rm -f "$depfile"
        !           350:   # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
        !           351:   # We have to change lines of the first kind to '$object: \'.
        !           352:   sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
        !           353:   # And for each line of the second kind, we have to emit a 'dep.h:'
        !           354:   # dummy dependency, to avoid the deleted-header problem.
        !           355:   sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
1.1       misho     356:   rm -f "$tmpdepfile"
                    357:   ;;
                    358: 
1.1.1.2 ! misho     359: ## The order of this option in the case statement is important, since the
        !           360: ## shell code in configure will try each of these formats in the order
        !           361: ## listed in this file.  A plain '-MD' option would be understood by many
        !           362: ## compilers, so we must ensure this comes after the gcc and icc options.
        !           363: pgcc)
        !           364:   # Portland's C compiler understands '-MD'.
        !           365:   # Will always output deps to 'file.d' where file is the root name of the
        !           366:   # source file under compilation, even if file resides in a subdirectory.
        !           367:   # The object file name does not affect the name of the '.d' file.
        !           368:   # pgcc 10.2 will output
1.1       misho     369:   #    foo.o: sub/foo.c sub/foo.h
1.1.1.2 ! misho     370:   # and will wrap long lines using '\' :
1.1       misho     371:   #    foo.o: sub/foo.c ... \
                    372:   #     sub/foo.h ... \
                    373:   #     ...
1.1.1.2 ! misho     374:   set_dir_from "$object"
        !           375:   # Use the source, not the object, to determine the base name, since
        !           376:   # that's sadly what pgcc will do too.
        !           377:   set_base_from "$source"
        !           378:   tmpdepfile=$base.d
        !           379: 
        !           380:   # For projects that build the same source file twice into different object
        !           381:   # files, the pgcc approach of using the *source* file root name can cause
        !           382:   # problems in parallel builds.  Use a locking strategy to avoid stomping on
        !           383:   # the same $tmpdepfile.
        !           384:   lockdir=$base.d-lock
        !           385:   trap "
        !           386:     echo '$0: caught signal, cleaning up...' >&2
        !           387:     rmdir '$lockdir'
        !           388:     exit 1
        !           389:   " 1 2 13 15
        !           390:   numtries=100
        !           391:   i=$numtries
        !           392:   while test $i -gt 0; do
        !           393:     # mkdir is a portable test-and-set.
        !           394:     if mkdir "$lockdir" 2>/dev/null; then
        !           395:       # This process acquired the lock.
        !           396:       "$@" -MD
        !           397:       stat=$?
        !           398:       # Release the lock.
        !           399:       rmdir "$lockdir"
        !           400:       break
        !           401:     else
        !           402:       # If the lock is being held by a different process, wait
        !           403:       # until the winning process is done or we timeout.
        !           404:       while test -d "$lockdir" && test $i -gt 0; do
        !           405:         sleep 1
        !           406:         i=`expr $i - 1`
        !           407:       done
        !           408:     fi
        !           409:     i=`expr $i - 1`
        !           410:   done
        !           411:   trap - 1 2 13 15
        !           412:   if test $i -le 0; then
        !           413:     echo "$0: failed to acquire lock after $numtries attempts" >&2
        !           414:     echo "$0: check lockdir '$lockdir'" >&2
        !           415:     exit 1
        !           416:   fi
1.1       misho     417: 
1.1.1.2 ! misho     418:   if test $stat -ne 0; then
1.1       misho     419:     rm -f "$tmpdepfile"
                    420:     exit $stat
                    421:   fi
                    422:   rm -f "$depfile"
                    423:   # Each line is of the form `foo.o: dependent.h',
                    424:   # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
                    425:   # Do two passes, one to just change these to
                    426:   # `$object: dependent.h' and one to simply `dependent.h:'.
                    427:   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
                    428:   # Some versions of the HPUX 10.20 sed can't process this invocation
                    429:   # correctly.  Breaking it into two sed invocations is a workaround.
1.1.1.2 ! misho     430:   sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
        !           431:     | sed -e 's/$/ :/' >> "$depfile"
1.1       misho     432:   rm -f "$tmpdepfile"
                    433:   ;;
                    434: 
                    435: hp2)
                    436:   # The "hp" stanza above does not work with aCC (C++) and HP's ia64
                    437:   # compilers, which have integrated preprocessors.  The correct option
                    438:   # to use with these is +Maked; it writes dependencies to a file named
                    439:   # 'foo.d', which lands next to the object file, wherever that
                    440:   # happens to be.
                    441:   # Much of this is similar to the tru64 case; see comments there.
1.1.1.2 ! misho     442:   set_dir_from  "$object"
        !           443:   set_base_from "$object"
1.1       misho     444:   if test "$libtool" = yes; then
                    445:     tmpdepfile1=$dir$base.d
                    446:     tmpdepfile2=$dir.libs/$base.d
                    447:     "$@" -Wc,+Maked
                    448:   else
                    449:     tmpdepfile1=$dir$base.d
                    450:     tmpdepfile2=$dir$base.d
                    451:     "$@" +Maked
                    452:   fi
                    453:   stat=$?
1.1.1.2 ! misho     454:   if test $stat -ne 0; then
1.1       misho     455:      rm -f "$tmpdepfile1" "$tmpdepfile2"
                    456:      exit $stat
                    457:   fi
                    458: 
                    459:   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
                    460:   do
                    461:     test -f "$tmpdepfile" && break
                    462:   done
                    463:   if test -f "$tmpdepfile"; then
1.1.1.2 ! misho     464:     sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
        !           465:     # Add 'dependent.h:' lines.
1.1       misho     466:     sed -ne '2,${
1.1.1.2 ! misho     467:                s/^ *//
        !           468:                s/ \\*$//
        !           469:                s/$/:/
        !           470:                p
        !           471:              }' "$tmpdepfile" >> "$depfile"
1.1       misho     472:   else
1.1.1.2 ! misho     473:     make_dummy_depfile
1.1       misho     474:   fi
                    475:   rm -f "$tmpdepfile" "$tmpdepfile2"
                    476:   ;;
                    477: 
                    478: tru64)
1.1.1.2 ! misho     479:   # The Tru64 compiler uses -MD to generate dependencies as a side
        !           480:   # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
        !           481:   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
        !           482:   # dependencies in 'foo.d' instead, so we check for that too.
        !           483:   # Subdirectories are respected.
        !           484:   set_dir_from  "$object"
        !           485:   set_base_from "$object"
        !           486: 
        !           487:   if test "$libtool" = yes; then
        !           488:     # Libtool generates 2 separate objects for the 2 libraries.  These
        !           489:     # two compilations output dependencies in $dir.libs/$base.o.d and
        !           490:     # in $dir$base.o.d.  We have to check for both files, because
        !           491:     # one of the two compilations can be disabled.  We should prefer
        !           492:     # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
        !           493:     # automatically cleaned when .libs/ is deleted, while ignoring
        !           494:     # the former would cause a distcleancheck panic.
        !           495:     tmpdepfile1=$dir$base.o.d          # libtool 1.5
        !           496:     tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
        !           497:     tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
        !           498:     "$@" -Wc,-MD
        !           499:   else
        !           500:     tmpdepfile1=$dir$base.d
        !           501:     tmpdepfile2=$dir$base.d
        !           502:     tmpdepfile3=$dir$base.d
        !           503:     "$@" -MD
        !           504:   fi
        !           505: 
        !           506:   stat=$?
        !           507:   if test $stat -ne 0; then
        !           508:     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
        !           509:     exit $stat
        !           510:   fi
1.1       misho     511: 
1.1.1.2 ! misho     512:   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
        !           513:   do
        !           514:     test -f "$tmpdepfile" && break
        !           515:   done
        !           516:   # Same post-processing that is required for AIX mode.
        !           517:   aix_post_process_depfile
        !           518:   ;;
        !           519: 
        !           520: msvc7)
        !           521:   if test "$libtool" = yes; then
        !           522:     showIncludes=-Wc,-showIncludes
        !           523:   else
        !           524:     showIncludes=-showIncludes
        !           525:   fi
        !           526:   "$@" $showIncludes > "$tmpdepfile"
        !           527:   stat=$?
        !           528:   grep -v '^Note: including file: ' "$tmpdepfile"
        !           529:   if test $stat -ne 0; then
        !           530:     rm -f "$tmpdepfile"
        !           531:     exit $stat
        !           532:   fi
        !           533:   rm -f "$depfile"
        !           534:   echo "$object : \\" > "$depfile"
        !           535:   # The first sed program below extracts the file names and escapes
        !           536:   # backslashes for cygpath.  The second sed program outputs the file
        !           537:   # name when reading, but also accumulates all include files in the
        !           538:   # hold buffer in order to output them again at the end.  This only
        !           539:   # works with sed implementations that can handle large buffers.
        !           540:   sed < "$tmpdepfile" -n '
        !           541: /^Note: including file:  *\(.*\)/ {
        !           542:   s//\1/
        !           543:   s/\\/\\\\/g
        !           544:   p
        !           545: }' | $cygpath_u | sort -u | sed -n '
        !           546: s/ /\\ /g
        !           547: s/\(.*\)/'"$tab"'\1 \\/p
        !           548: s/.\(.*\) \\/\1:/
        !           549: H
        !           550: $ {
        !           551:   s/.*/'"$tab"'/
        !           552:   G
        !           553:   p
        !           554: }' >> "$depfile"
        !           555:   rm -f "$tmpdepfile"
        !           556:   ;;
        !           557: 
        !           558: msvc7msys)
        !           559:   # This case exists only to let depend.m4 do its work.  It works by
        !           560:   # looking at the text of this script.  This case will never be run,
        !           561:   # since it is checked for above.
        !           562:   exit 1
        !           563:   ;;
1.1       misho     564: 
                    565: #nosideeffect)
                    566:   # This comment above is used by automake to tell side-effect
                    567:   # dependency tracking mechanisms from slower ones.
                    568: 
                    569: dashmstdout)
                    570:   # Important note: in order to support this mode, a compiler *must*
                    571:   # always write the preprocessed file to stdout, regardless of -o.
                    572:   "$@" || exit $?
                    573: 
                    574:   # Remove the call to Libtool.
                    575:   if test "$libtool" = yes; then
                    576:     while test "X$1" != 'X--mode=compile'; do
                    577:       shift
                    578:     done
                    579:     shift
                    580:   fi
                    581: 
1.1.1.2 ! misho     582:   # Remove '-o $object'.
1.1       misho     583:   IFS=" "
                    584:   for arg
                    585:   do
                    586:     case $arg in
                    587:     -o)
                    588:       shift
                    589:       ;;
                    590:     $object)
                    591:       shift
                    592:       ;;
                    593:     *)
                    594:       set fnord "$@" "$arg"
                    595:       shift # fnord
                    596:       shift # $arg
                    597:       ;;
                    598:     esac
                    599:   done
                    600: 
                    601:   test -z "$dashmflag" && dashmflag=-M
1.1.1.2 ! misho     602:   # Require at least two characters before searching for ':'
1.1       misho     603:   # in the target name.  This is to cope with DOS-style filenames:
1.1.1.2 ! misho     604:   # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
1.1       misho     605:   "$@" $dashmflag |
1.1.1.2 ! misho     606:     sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
1.1       misho     607:   rm -f "$depfile"
                    608:   cat < "$tmpdepfile" > "$depfile"
1.1.1.2 ! misho     609:   # Some versions of the HPUX 10.20 sed can't process this sed invocation
        !           610:   # correctly.  Breaking it into two sed invocations is a workaround.
        !           611:   tr ' ' "$nl" < "$tmpdepfile" \
        !           612:     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
        !           613:     | sed -e 's/$/ :/' >> "$depfile"
1.1       misho     614:   rm -f "$tmpdepfile"
                    615:   ;;
                    616: 
                    617: dashXmstdout)
                    618:   # This case only exists to satisfy depend.m4.  It is never actually
                    619:   # run, as this mode is specially recognized in the preamble.
                    620:   exit 1
                    621:   ;;
                    622: 
                    623: makedepend)
                    624:   "$@" || exit $?
                    625:   # Remove any Libtool call
                    626:   if test "$libtool" = yes; then
                    627:     while test "X$1" != 'X--mode=compile'; do
                    628:       shift
                    629:     done
                    630:     shift
                    631:   fi
                    632:   # X makedepend
                    633:   shift
                    634:   cleared=no eat=no
                    635:   for arg
                    636:   do
                    637:     case $cleared in
                    638:     no)
                    639:       set ""; shift
                    640:       cleared=yes ;;
                    641:     esac
                    642:     if test $eat = yes; then
                    643:       eat=no
                    644:       continue
                    645:     fi
                    646:     case "$arg" in
                    647:     -D*|-I*)
                    648:       set fnord "$@" "$arg"; shift ;;
                    649:     # Strip any option that makedepend may not understand.  Remove
                    650:     # the object too, otherwise makedepend will parse it as a source file.
                    651:     -arch)
                    652:       eat=yes ;;
                    653:     -*|$object)
                    654:       ;;
                    655:     *)
                    656:       set fnord "$@" "$arg"; shift ;;
                    657:     esac
                    658:   done
                    659:   obj_suffix=`echo "$object" | sed 's/^.*\././'`
                    660:   touch "$tmpdepfile"
                    661:   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
                    662:   rm -f "$depfile"
1.1.1.2 ! misho     663:   # makedepend may prepend the VPATH from the source file name to the object.
        !           664:   # No need to regex-escape $object, excess matching of '.' is harmless.
        !           665:   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
        !           666:   # Some versions of the HPUX 10.20 sed can't process the last invocation
        !           667:   # correctly.  Breaking it into two sed invocations is a workaround.
        !           668:   sed '1,2d' "$tmpdepfile" \
        !           669:     | tr ' ' "$nl" \
        !           670:     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
        !           671:     | sed -e 's/$/ :/' >> "$depfile"
1.1       misho     672:   rm -f "$tmpdepfile" "$tmpdepfile".bak
                    673:   ;;
                    674: 
                    675: cpp)
                    676:   # Important note: in order to support this mode, a compiler *must*
                    677:   # always write the preprocessed file to stdout.
                    678:   "$@" || exit $?
                    679: 
                    680:   # Remove the call to Libtool.
                    681:   if test "$libtool" = yes; then
                    682:     while test "X$1" != 'X--mode=compile'; do
                    683:       shift
                    684:     done
                    685:     shift
                    686:   fi
                    687: 
1.1.1.2 ! misho     688:   # Remove '-o $object'.
1.1       misho     689:   IFS=" "
                    690:   for arg
                    691:   do
                    692:     case $arg in
                    693:     -o)
                    694:       shift
                    695:       ;;
                    696:     $object)
                    697:       shift
                    698:       ;;
                    699:     *)
                    700:       set fnord "$@" "$arg"
                    701:       shift # fnord
                    702:       shift # $arg
                    703:       ;;
                    704:     esac
                    705:   done
                    706: 
1.1.1.2 ! misho     707:   "$@" -E \
        !           708:     | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
        !           709:              -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
        !           710:     | sed '$ s: \\$::' > "$tmpdepfile"
1.1       misho     711:   rm -f "$depfile"
                    712:   echo "$object : \\" > "$depfile"
                    713:   cat < "$tmpdepfile" >> "$depfile"
                    714:   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
                    715:   rm -f "$tmpdepfile"
                    716:   ;;
                    717: 
                    718: msvisualcpp)
                    719:   # Important note: in order to support this mode, a compiler *must*
                    720:   # always write the preprocessed file to stdout.
                    721:   "$@" || exit $?
                    722: 
                    723:   # Remove the call to Libtool.
                    724:   if test "$libtool" = yes; then
                    725:     while test "X$1" != 'X--mode=compile'; do
                    726:       shift
                    727:     done
                    728:     shift
                    729:   fi
                    730: 
                    731:   IFS=" "
                    732:   for arg
                    733:   do
                    734:     case "$arg" in
                    735:     -o)
                    736:       shift
                    737:       ;;
                    738:     $object)
                    739:       shift
                    740:       ;;
                    741:     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
1.1.1.2 ! misho     742:         set fnord "$@"
        !           743:         shift
        !           744:         shift
        !           745:         ;;
1.1       misho     746:     *)
1.1.1.2 ! misho     747:         set fnord "$@" "$arg"
        !           748:         shift
        !           749:         shift
        !           750:         ;;
1.1       misho     751:     esac
                    752:   done
                    753:   "$@" -E 2>/dev/null |
                    754:   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
                    755:   rm -f "$depfile"
                    756:   echo "$object : \\" > "$depfile"
1.1.1.2 ! misho     757:   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
        !           758:   echo "$tab" >> "$depfile"
1.1       misho     759:   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
                    760:   rm -f "$tmpdepfile"
                    761:   ;;
                    762: 
                    763: msvcmsys)
                    764:   # This case exists only to let depend.m4 do its work.  It works by
                    765:   # looking at the text of this script.  This case will never be run,
                    766:   # since it is checked for above.
                    767:   exit 1
                    768:   ;;
                    769: 
                    770: none)
                    771:   exec "$@"
                    772:   ;;
                    773: 
                    774: *)
                    775:   echo "Unknown depmode $depmode" 1>&2
                    776:   exit 1
                    777:   ;;
                    778: esac
                    779: 
                    780: exit 0
                    781: 
                    782: # Local Variables:
                    783: # mode: shell-script
                    784: # sh-indentation: 2
                    785: # eval: (add-hook 'write-file-hooks 'time-stamp)
                    786: # time-stamp-start: "scriptversion="
                    787: # time-stamp-format: "%:y-%02m-%02d.%02H"
                    788: # time-stamp-time-zone: "UTC"
                    789: # time-stamp-end: "; # UTC"
                    790: # End:

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