depcomp
author Ozkan Sezer <sezeroz@gmail.com>
Thu, 11 Jul 2019 01:10:28 +0300
changeset 682 6950f1d21f82
parent 664 b6b714389ea9
permissions -rwxr-xr-x
consistently use IMG_SetError() instead of SDL_SetError.
     1 #! /bin/sh
     2 # depcomp - compile a program generating dependencies as side-effects
     3 
     4 scriptversion=2017-09-16.17; # UTC
     5 
     6 # Copyright (C) 1999-2018 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 <https://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: "UTC0"
   790 # time-stamp-end: "; # UTC"
   791 # End: