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    1 #! /bin/sh
    2 # depcomp - compile a program generating dependencies as side-effects
    3 
    4 scriptversion=2013-05-30.07; # UTC
    5 
    6 # Copyright (C) 1999-2013 Free Software Foundation, Inc.
    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   '')
   30     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
   31     exit 1;
   32     ;;
   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.
   42   source      Source file read by 'PROGRAMS ARGS'.
   43   object      Object file output by 'PROGRAMS ARGS'.
   44   DEPDIR      directory where to store dependencies.
   45   depfile     Dependency file to output.
   46   tmpdepfile  Temporary file to use when outputting dependencies.
   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 $?
   56     ;;
   57 esac
   58 
   59 # Get the directory component of the given path, and save it in the
   60 # global variables '$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 
  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 
  131 # Avoid interferences from the environment.
  132 gccflag= dashmflag=
  133 
  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
  145   # This is just like dashmstdout with a different argument.
  146   dashmflag=-xM
  147   depmode=dashmstdout
  148 fi
  149 
  150 cygpath_u="cygpath -u -f -"
  151 if test "$depmode" = msvcmsys; then
  152   # This is just like msvisualcpp but w/o cygpath translation.
  153   # Just convert the backslash-escaped backslashes to single forward
  154   # slashes to satisfy depend.m4
  155   cygpath_u='sed s,\\\\,/,g'
  156   depmode=msvisualcpp
  157 fi
  158 
  159 if test "$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 "$depmode" = xlc; then
  168   # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
  169   gccflag=-qmakedep=gcc,-MF
  170   depmode=gcc
  171 fi
  172 
  173 case "$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=$?
  193   if test $stat -ne 0; then
  194     rm -f "$tmpdepfile"
  195     exit $stat
  196   fi
  197   mv "$tmpdepfile" "$depfile"
  198   ;;
  199 
  200 gcc)
  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 $gccflag above).
  204 ## There are various ways to get dependency output from gcc.  Here's
  205 ## why we pick this rather obscure method:
  206 ## - Don't want to use -MD because we'd like the dependencies to end
  207 ##   up in a subdir.  Having to rename by hand is ugly.
  208 ##   (We might end up doing this anyway to support other compilers.)
  209 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
  210 ##   -MM, not -M (despite what the docs say).  Also, it might not be
  211 ##   supported by the other compilers which use the 'gcc' depmode.
  212 ## - Using -M directly means running the compiler twice (even worse
  213 ##   than renaming).
  214   if test -z "$gccflag"; then
  215     gccflag=-MD,
  216   fi
  217   "$@" -Wp,"$gccflag$tmpdepfile"
  218   stat=$?
  219   if test $stat -ne 0; then
  220     rm -f "$tmpdepfile"
  221     exit $stat
  222   fi
  223   rm -f "$depfile"
  224   echo "$object : \\" > "$depfile"
  225   # The second -e expression handles DOS-style file names with drive
  226   # letters.
  227   sed -e 's/^[^:]*: / /' \
  228       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
  229 ## This next piece of magic avoids the "deleted header file" problem.
  230 ## The problem is that when a header file which appears in a .P file
  231 ## is deleted, the dependency causes make to die (because there is
  232 ## typically no way to rebuild the header).  We avoid this by adding
  233 ## dummy dependencies for each header file.  Too bad gcc doesn't do
  234 ## this for us directly.
  235 ## Some versions of gcc put a space before the ':'.  On the theory
  236 ## that the space means something, we add a space to the output as
  237 ## well.  hp depmode also adds that space, but also prefixes the VPATH
  238 ## to the object.  Take care to not repeat it in the output.
  239 ## Some versions of the HPUX 10.20 sed can't process this invocation
  240 ## correctly.  Breaking it into two sed invocations is a workaround.
  241   tr ' ' "$nl" < "$tmpdepfile" \
  242     | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
  243     | sed -e 's/$/ :/' >> "$depfile"
  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=$?
  261   if test $stat -ne 0; then
  262     rm -f "$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 : \\" > "$depfile"
  269     # Clip off the initial element (the dependent).  Don't try to be
  270     # clever and replace this with sed code, as IRIX sed won't handle
  271     # lines with more than a fixed number of characters (4096 in
  272     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
  273     # the IRIX cc adds comments like '#:fec' to the end of the
  274     # dependency line.
  275     tr ' ' "$nl" < "$tmpdepfile" \
  276       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
  277       | tr "$nl" ' ' >> "$depfile"
  278     echo >> "$depfile"
  279     # The second pass generates a dummy entry for each header file.
  280     tr ' ' "$nl" < "$tmpdepfile" \
  281       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
  282       >> "$depfile"
  283   else
  284     make_dummy_depfile
  285   fi
  286   rm -f "$tmpdepfile"
  287   ;;
  288 
  289 xlc)
  290   # This case exists only to let depend.m4 do its work.  It works by
  291   # looking at the text of this script.  This case will never be run,
  292   # since it is checked for above.
  293   exit 1
  294   ;;
  295 
  296 aix)
  297   # The C for AIX Compiler uses -M and outputs the dependencies
  298   # in a .u file.  In older versions, this file always lives in the
  299   # current directory.  Also, the AIX compiler puts '$object:' at the
  300   # start of each line; $object doesn't have directory information.
  301   # Version 6 uses the directory in both cases.
  302   set_dir_from "$object"
  303   set_base_from "$object"
  304   if test "$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     "$@" -M
  314   fi
  315   stat=$?
  316   if test $stat -ne 0; then
  317     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  318     exit $stat
  319   fi
  320 
  321   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  322   do
  323     test -f "$tmpdepfile" && break
  324   done
  325   aix_post_process_depfile
  326   ;;
  327 
  328 tcc)
  329   # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
  330   # FIXME: That version still under development at the moment of writing.
  331   #        Make that this statement remains true also for stable, released
  332   #        versions.
  333   # It will wrap lines (doesn't matter whether long or short) with a
  334   # trailing '\', as in:
  335   #
  336   #   foo.o : \
  337   #    foo.c \
  338   #    foo.h \
  339   #
  340   # It will put a trailing '\' even on the last line, and will use leading
  341   # spaces rather than leading tabs (at least since its commit 0394caf7
  342   # "Emit spaces for -MD").
  343   "$@" -MD -MF "$tmpdepfile"
  344   stat=$?
  345   if test $stat -ne 0; then
  346     rm -f "$tmpdepfile"
  347     exit $stat
  348   fi
  349   rm -f "$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"
  356   rm -f "$tmpdepfile"
  357   ;;
  358 
  359 ## The order of this option in the case statement is important, since the
  360 ## shell code in configure will try each of these formats in the order
  361 ## listed in this file.  A plain '-MD' option would be understood by many
  362 ## compilers, so we must ensure this comes after the gcc and icc options.
  363 pgcc)
  364   # Portland's C compiler understands '-MD'.
  365   # Will always output deps to 'file.d' where file is the root name of the
  366   # source file under compilation, even if file resides in a subdirectory.
  367   # The object file name does not affect the name of the '.d' file.
  368   # pgcc 10.2 will output
  369   #    foo.o: sub/foo.c sub/foo.h
  370   # and will wrap long lines using '\' :
  371   #    foo.o: sub/foo.c ... \
  372   #     sub/foo.h ... \
  373   #     ...
  374   set_dir_from "$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
  417 
  418   if test $stat -ne 0; then
  419     rm -f "$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.
  430   sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
  431     | sed -e 's/$/ :/' >> "$depfile"
  432   rm -f "$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.
  442   set_dir_from  "$object"
  443   set_base_from "$object"
  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     "$@" +Maked
  452   fi
  453   stat=$?
  454   if test $stat -ne 0; then
  455      rm -f "$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 "$tmpdepfile"; then
  464     sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
  465     # Add 'dependent.h:' lines.
  466     sed -ne '2,${
  467                s/^ *//
  468                s/ \\*$//
  469                s/$/:/
  470                p
  471              }' "$tmpdepfile" >> "$depfile"
  472   else
  473     make_dummy_depfile
  474   fi
  475   rm -f "$tmpdepfile" "$tmpdepfile2"
  476   ;;
  477 
  478 tru64)
  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 $stat
  510   fi
  511 
  512   for tmpdepfile in "$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   echo >> "$depfile" # make sure the fragment doesn't end with a backslash
  556   rm -f "$tmpdepfile"
  557   ;;
  558 
  559 msvc7msys)
  560   # This case exists only to let depend.m4 do its work.  It works by
  561   # looking at the text of this script.  This case will never be run,
  562   # since it is checked for above.
  563   exit 1
  564   ;;
  565 
  566 #nosideeffect)
  567   # This comment above is used by automake to tell side-effect
  568   # dependency tracking mechanisms from slower ones.
  569 
  570 dashmstdout)
  571   # Important note: in order to support this mode, a compiler *must*
  572   # always write the preprocessed file to stdout, regardless of -o.
  573   "$@" || exit $?
  574 
  575   # Remove the call to Libtool.
  576   if test "$libtool" = yes; then
  577     while test "X$1" != 'X--mode=compile'; do
  578       shift
  579     done
  580     shift
  581   fi
  582 
  583   # Remove '-o $object'.
  584   IFS=" "
  585   for arg
  586   do
  587     case $arg in
  588     -o)
  589       shift
  590       ;;
  591     $object)
  592       shift
  593       ;;
  594     *)
  595       set fnord "$@" "$arg"
  596       shift # fnord
  597       shift # $arg
  598       ;;
  599     esac
  600   done
  601 
  602   test -z "$dashmflag" && dashmflag=-M
  603   # Require at least two characters before searching for ':'
  604   # in the target name.  This is to cope with DOS-style filenames:
  605   # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
  606   "$@" $dashmflag |
  607     sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
  608   rm -f "$depfile"
  609   cat < "$tmpdepfile" > "$depfile"
  610   # Some versions of the HPUX 10.20 sed can't process this sed invocation
  611   # correctly.  Breaking it into two sed invocations is a workaround.
  612   tr ' ' "$nl" < "$tmpdepfile" \
  613     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
  614     | sed -e 's/$/ :/' >> "$depfile"
  615   rm -f "$tmpdepfile"
  616   ;;
  617 
  618 dashXmstdout)
  619   # This case only exists to satisfy depend.m4.  It is never actually
  620   # run, as this mode is specially recognized in the preamble.
  621   exit 1
  622   ;;
  623 
  624 makedepend)
  625   "$@" || exit $?
  626   # Remove any Libtool call
  627   if test "$libtool" = yes; then
  628     while test "X$1" != 'X--mode=compile'; do
  629       shift
  630     done
  631     shift
  632   fi
  633   # X makedepend
  634   shift
  635   cleared=no eat=no
  636   for arg
  637   do
  638     case $cleared in
  639     no)
  640       set ""; shift
  641       cleared=yes ;;
  642     esac
  643     if test $eat = yes; then
  644       eat=no
  645       continue
  646     fi
  647     case "$arg" in
  648     -D*|-I*)
  649       set fnord "$@" "$arg"; shift ;;
  650     # Strip any option that makedepend may not understand.  Remove
  651     # the object too, otherwise makedepend will parse it as a source file.
  652     -arch)
  653       eat=yes ;;
  654     -*|$object)
  655       ;;
  656     *)
  657       set fnord "$@" "$arg"; shift ;;
  658     esac
  659   done
  660   obj_suffix=`echo "$object" | sed 's/^.*\././'`
  661   touch "$tmpdepfile"
  662   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
  663   rm -f "$depfile"
  664   # makedepend may prepend the VPATH from the source file name to the object.
  665   # No need to regex-escape $object, excess matching of '.' is harmless.
  666   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
  667   # Some versions of the HPUX 10.20 sed can't process the last invocation
  668   # correctly.  Breaking it into two sed invocations is a workaround.
  669   sed '1,2d' "$tmpdepfile" \
  670     | tr ' ' "$nl" \
  671     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
  672     | sed -e 's/$/ :/' >> "$depfile"
  673   rm -f "$tmpdepfile" "$tmpdepfile".bak
  674   ;;
  675 
  676 cpp)
  677   # Important note: in order to support this mode, a compiler *must*
  678   # always write the preprocessed file to stdout.
  679   "$@" || exit $?
  680 
  681   # Remove the call to Libtool.
  682   if test "$libtool" = yes; then
  683     while test "X$1" != 'X--mode=compile'; do
  684       shift
  685     done
  686     shift
  687   fi
  688 
  689   # Remove '-o $object'.
  690   IFS=" "
  691   for arg
  692   do
  693     case $arg in
  694     -o)
  695       shift
  696       ;;
  697     $object)
  698       shift
  699       ;;
  700     *)
  701       set fnord "$@" "$arg"
  702       shift # fnord
  703       shift # $arg
  704       ;;
  705     esac
  706   done
  707 
  708   "$@" -E \
  709     | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
  710              -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
  711     | sed '$ s: \\$::' > "$tmpdepfile"
  712   rm -f "$depfile"
  713   echo "$object : \\" > "$depfile"
  714   cat < "$tmpdepfile" >> "$depfile"
  715   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
  716   rm -f "$tmpdepfile"
  717   ;;
  718 
  719 msvisualcpp)
  720   # Important note: in order to support this mode, a compiler *must*
  721   # always write the preprocessed file to stdout.
  722   "$@" || exit $?
  723 
  724   # Remove the call to Libtool.
  725   if test "$libtool" = yes; then
  726     while test "X$1" != 'X--mode=compile'; do
  727       shift
  728     done
  729     shift
  730   fi
  731 
  732   IFS=" "
  733   for arg
  734   do
  735     case "$arg" in
  736     -o)
  737       shift
  738       ;;
  739     $object)
  740       shift
  741       ;;
  742     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
  743         set fnord "$@"
  744         shift
  745         shift
  746         ;;
  747     *)
  748         set fnord "$@" "$arg"
  749         shift
  750         shift
  751         ;;
  752     esac
  753   done
  754   "$@" -E 2>/dev/null |
  755   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
  756   rm -f "$depfile"
  757   echo "$object : \\" > "$depfile"
  758   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
  759   echo "$tab" >> "$depfile"
  760   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
  761   rm -f "$tmpdepfile"
  762   ;;
  763 
  764 msvcmsys)
  765   # This case exists only to let depend.m4 do its work.  It works by
  766   # looking at the text of this script.  This case will never be run,
  767   # since it is checked for above.
  768   exit 1
  769   ;;
  770 
  771 none)
  772   exec "$@"
  773   ;;
  774 
  775 *)
  776   echo "Unknown depmode $depmode" 1>&2
  777   exit 1
  778   ;;
  779 esac
  780 
  781 exit 0
  782 
  783 # Local Variables:
  784 # mode: shell-script
  785 # sh-indentation: 2
  786 # eval: (add-hook 'write-file-hooks 'time-stamp)
  787 # time-stamp-start: "scriptversion="
  788 # time-stamp-format: "%:y-%02m-%02d.%02H"
  789 # time-stamp-time-zone: "UTC"
  790 # time-stamp-end: "; # UTC"
  791 # End: