release/src/router/lzo/autoconf/depcomp

   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) 1999-2015 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 "$tmpdepfile"
 245   ;;
 246
 247 hp)
 248   # This case exists only to let depend.m4 do its work.  It works by
 249   # looking at the text of this script.  This case will never be run,
 250   # since it is checked for above.
 251   exit 1
 252   ;;
 253
 254 xlc)
 255   # This case exists only to let depend.m4 do its work.  It works by
 256   # looking at the text of this script.  This case will never be run,
 257   # since it is checked for above.
 258   exit 1
 259   ;;
 260
 261 aix)
 262   # The C for AIX Compiler uses -M and outputs the dependencies
 263   # in a .u file.  In older versions, this file always lives in the
 264   # current directory.  Also, the AIX compiler puts '$object:' at the
 265   # start of each line; $object doesn't have directory information.
 266   # Version 6 uses the directory in both cases.
 267   set_dir_from "$object"
 268   set_base_from "$object"
 269   if test "$libtool" = yes; then
 270     tmpdepfile1=$dir$base.u
 271     tmpdepfile2=$base.u
 272     tmpdepfile3=$dir.libs/$base.u
 273     "$@" -Wc,-M
 274   else
 275     tmpdepfile1=$dir$base.u
 276     tmpdepfile2=$dir$base.u
 277     tmpdepfile3=$dir$base.u
 278     "$@" -M
 279   fi
 280   stat=$?
 281   if test $stat -ne 0; then
 282     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
 283     exit $stat
 284   fi
 285
 286   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
 287   do
 288     test -f "$tmpdepfile" && break
 289   done
 290   aix_post_process_depfile
 291   ;;
 292
 293 tcc)
 294   # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
 295   # FIXME: That version still under development at the moment of writing.
 296   #        Make that this statement remains true also for stable, released
 297   #        versions.
 298   # It will wrap lines (doesn't matter whether long or short) with a
 299   # trailing '\', as in:
 300   #
 301   #   foo.o : \
 302   #    foo.c \
 303   #    foo.h \
 304   #
 305   # It will put a trailing '\' even on the last line, and will use leading
 306   # spaces rather than leading tabs (at least since its commit 0394caf7
 307   # "Emit spaces for -MD").
 308   "$@" -MD -MF "$tmpdepfile"
 309   stat=$?
 310   if test $stat -ne 0; then
 311     rm -f "$tmpdepfile"
 312     exit $stat
 313   fi
 314   rm -f "$depfile"
 315   # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
 316   # We have to change lines of the first kind to '$object: \'.
 317   sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
 318   # And for each line of the second kind, we have to emit a 'dep.h:'
 319   # dummy dependency, to avoid the deleted-header problem.
 320   sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
 321   rm -f "$tmpdepfile"
 322   ;;
 323
 324 ## The order of this option in the case statement is important, since the
 325 ## shell code in configure will try each of these formats in the order
 326 ## listed in this file.  A plain '-MD' option would be understood by many
 327 ## compilers, so we must ensure this comes after the gcc and icc options.
 328 pgcc)
 329   # Portland's C compiler understands '-MD'.
 330   # Will always output deps to 'file.d' where file is the root name of the
 331   # source file under compilation, even if file resides in a subdirectory.
 332   # The object file name does not affect the name of the '.d' file.
 333   # pgcc 10.2 will output
 334   #    foo.o: sub/foo.c sub/foo.h
 335   # and will wrap long lines using '\' :
 336   #    foo.o: sub/foo.c ... \
 337   #     sub/foo.h ... \
 338   #     ...
 339   set_dir_from "$object"
 340   # Use the source, not the object, to determine the base name, since
 341   # that's sadly what pgcc will do too.
 342   set_base_from "$source"
 343   tmpdepfile=$base.d
 344
 345   # For projects that build the same source file twice into different object
 346   # files, the pgcc approach of using the *source* file root name can cause
 347   # problems in parallel builds.  Use a locking strategy to avoid stomping on
 348   # the same $tmpdepfile.
 349   lockdir=$base.d-lock
 350   trap "
 351     echo '$0: caught signal, cleaning up...' >&2
 352     rmdir '$lockdir'
 353     exit 1
 354   " 1 2 13 15
 355   numtries=100
 356   i=$numtries
 357   while test $i -gt 0; do
 358     # mkdir is a portable test-and-set.
 359     if mkdir "$lockdir" 2>/dev/null; then
 360       # This process acquired the lock.
 361       "$@" -MD
 362       stat=$?
 363       # Release the lock.
 364       rmdir "$lockdir"
 365       break
 366     else
 367       # If the lock is being held by a different process, wait
 368       # until the winning process is done or we timeout.
 369       while test -d "$lockdir" && test $i -gt 0; do
 370         sleep 1
 371         i=`expr $i - 1`
 372       done
 373     fi
 374     i=`expr $i - 1`
 375   done
 376   trap - 1 2 13 15
 377   if test $i -le 0; then
 378     echo "$0: failed to acquire lock after $numtries attempts" >&2
 379     echo "$0: check lockdir '$lockdir'" >&2
 380     exit 1
 381   fi
 382
 383   if test $stat -ne 0; then
 384     rm -f "$tmpdepfile"
 385     exit $stat
 386   fi
 387   rm -f "$depfile"
 388   # Each line is of the form `foo.o: dependent.h',
 389   # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
 390   # Do two passes, one to just change these to
 391   # `$object: dependent.h' and one to simply `dependent.h:'.
 392   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
 393   # Some versions of the HPUX 10.20 sed can't process this invocation
 394   # correctly.  Breaking it into two sed invocations is a workaround.
 395   sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
 396     | sed -e 's/$/ :/' >> "$depfile"
 397   rm -f "$tmpdepfile"
 398   ;;
 399
 400 hp2)
 401   # The "hp" stanza above does not work with aCC (C++) and HP's ia64
 402   # compilers, which have integrated preprocessors.  The correct option
 403   # to use with these is +Maked; it writes dependencies to a file named
 404   # 'foo.d', which lands next to the object file, wherever that
 405   # happens to be.
 406   # Much of this is similar to the tru64 case; see comments there.
 407   set_dir_from  "$object"
 408   set_base_from "$object"
 409   if test "$libtool" = yes; then
 410     tmpdepfile1=$dir$base.d
 411     tmpdepfile2=$dir.libs/$base.d
 412     "$@" -Wc,+Maked
 413   else
 414     tmpdepfile1=$dir$base.d
 415     tmpdepfile2=$dir$base.d
 416     "$@" +Maked
 417   fi
 418   stat=$?
 419   if test $stat -ne 0; then
 420      rm -f "$tmpdepfile1" "$tmpdepfile2"
 421      exit $stat
 422   fi
 423
 424   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
 425   do
 426     test -f "$tmpdepfile" && break
 427   done
 428   if test -f "$tmpdepfile"; then
 429     sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
 430     # Add 'dependent.h:' lines.
 431     sed -ne '2,${
 432                s/^ *//
 433                s/ \\*$//
 434                s/$/:/
 435                p
 436              }' "$tmpdepfile" >> "$depfile"
 437   else
 438     make_dummy_depfile
 439   fi
 440   rm -f "$tmpdepfile" "$tmpdepfile2"
 441   ;;
 442
 443 tru64)
 444   # The Tru64 compiler uses -MD to generate dependencies as a side
 445   # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
 446   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
 447   # dependencies in 'foo.d' instead, so we check for that too.
 448   # Subdirectories are respected.
 449   set_dir_from  "$object"
 450   set_base_from "$object"
 451
 452   if test "$libtool" = yes; then
 453     # Libtool generates 2 separate objects for the 2 libraries.  These
 454     # two compilations output dependencies in $dir.libs/$base.o.d and
 455     # in $dir$base.o.d.  We have to check for both files, because
 456     # one of the two compilations can be disabled.  We should prefer
 457     # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
 458     # automatically cleaned when .libs/ is deleted, while ignoring
 459     # the former would cause a distcleancheck panic.
 460     tmpdepfile1=$dir$base.o.d          # libtool 1.5
 461     tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
 462     tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
 463     "$@" -Wc,-MD
 464   else
 465     tmpdepfile1=$dir$base.d
 466     tmpdepfile2=$dir$base.d
 467     tmpdepfile3=$dir$base.d
 468     "$@" -MD
 469   fi
 470
 471   stat=$?
 472   if test $stat -ne 0; then
 473     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
 474     exit $stat
 475   fi
 476
 477   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
 478   do
 479     test -f "$tmpdepfile" && break
 480   done
 481   # Same post-processing that is required for AIX mode.
 482   aix_post_process_depfile
 483   ;;
 484
 485 msvc7)
 486   if test "$libtool" = yes; then
 487     showIncludes=-Wc,-showIncludes
 488   else
 489     showIncludes=-showIncludes
 490   fi
 491   "$@" $showIncludes > "$tmpdepfile"
 492   stat=$?
 493   grep -v '^Note: including file: ' "$tmpdepfile"
 494   if test $stat -ne 0; then
 495     rm -f "$tmpdepfile"
 496     exit $stat
 497   fi
 498   rm -f "$depfile"
 499   echo "$object : \\" > "$depfile"
 500   # The first sed program below extracts the file names and escapes
 501   # backslashes for cygpath.  The second sed program outputs the file
 502   # name when reading, but also accumulates all include files in the
 503   # hold buffer in order to output them again at the end.  This only
 504   # works with sed implementations that can handle large buffers.
 505   sed < "$tmpdepfile" -n '
 506 /^Note: including file:  *\(.*\)/ {
 507   s//\1/
 508   s/\\/\\\\/g
 509   p
 510 }' | $cygpath_u | sort -u | sed -n '
 511 s/ /\\ /g
 512 s/\(.*\)/'"$tab"'\1 \\/p
 513 s/.\(.*\) \\/\1:/
 514 H
 515 $ {
 516   s/.*/'"$tab"'/
 517   G
 518   p
 519 }' >> "$depfile"
 520   echo >> "$depfile" # make sure the fragment doesn't end with a backslash
 521   rm -f "$tmpdepfile"
 522   ;;
 523
 524 msvc7msys)
 525   # This case exists only to let depend.m4 do its work.  It works by
 526   # looking at the text of this script.  This case will never be run,
 527   # since it is checked for above.
 528   exit 1
 529   ;;
 530
 531 #nosideeffect)
 532   # This comment above is used by automake to tell side-effect
 533   # dependency tracking mechanisms from slower ones.
 534
 535 dashmstdout)
 536   # Important note: in order to support this mode, a compiler *must*
 537   # always write the preprocessed file to stdout, regardless of -o.
 538   "$@" || exit $?
 539
 540   # Remove the call to Libtool.
 541   if test "$libtool" = yes; then
 542     while test "X$1" != 'X--mode=compile'; do
 543       shift
 544     done
 545     shift
 546   fi
 547
 548   # Remove '-o $object'.
 549   IFS=" "
 550   for arg
 551   do
 552     case $arg in
 553     -o)
 554       shift
 555       ;;
 556     $object)
 557       shift
 558       ;;
 559     *)
 560       set fnord "$@" "$arg"
 561       shift # fnord
 562       shift # $arg
 563       ;;
 564     esac
 565   done
 566
 567   test -z "$dashmflag" && dashmflag=-M
 568   # Require at least two characters before searching for ':'
 569   # in the target name.  This is to cope with DOS-style filenames:
 570   # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
 571   "$@" $dashmflag |
 572     sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
 573   rm -f "$depfile"
 574   cat < "$tmpdepfile" > "$depfile"
 575   # Some versions of the HPUX 10.20 sed can't process this sed invocation
 576   # correctly.  Breaking it into two sed invocations is a workaround.
 577   tr ' ' "$nl" < "$tmpdepfile" \
 578     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
 579     | sed -e 's/$/ :/' >> "$depfile"
 580   rm -f "$tmpdepfile"
 581   ;;
 582
 583 dashXmstdout)
 584   # This case only exists to satisfy depend.m4.  It is never actually
 585   # run, as this mode is specially recognized in the preamble.
 586   exit 1
 587   ;;
 588
 589 makedepend)
 590   "$@" || exit $?
 591   # Remove any Libtool call
 592   if test "$libtool" = yes; then
 593     while test "X$1" != 'X--mode=compile'; do
 594       shift
 595     done
 596     shift
 597   fi
 598   # X makedepend
 599   shift
 600   cleared=no eat=no
 601   for arg
 602   do
 603     case $cleared in
 604     no)
 605       set ""; shift
 606       cleared=yes ;;
 607     esac
 608     if test $eat = yes; then
 609       eat=no
 610       continue
 611     fi
 612     case "$arg" in
 613     -D*|-I*)
 614       set fnord "$@" "$arg"; shift ;;
 615     # Strip any option that makedepend may not understand.  Remove
 616     # the object too, otherwise makedepend will parse it as a source file.
 617     -arch)
 618       eat=yes ;;
 619     -*|$object)
 620       ;;
 621     *)
 622       set fnord "$@" "$arg"; shift ;;
 623     esac
 624   done
 625   obj_suffix=`echo "$object" | sed 's/^.*\././'`
 626   touch "$tmpdepfile"
 627   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
 628   rm -f "$depfile"
 629   # makedepend may prepend the VPATH from the source file name to the object.
 630   # No need to regex-escape $object, excess matching of '.' is harmless.
 631   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
 632   # Some versions of the HPUX 10.20 sed can't process the last invocation
 633   # correctly.  Breaking it into two sed invocations is a workaround.
 634   sed '1,2d' "$tmpdepfile" \
 635     | tr ' ' "$nl" \
 636     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
 637     | sed -e 's/$/ :/' >> "$depfile"
 638   rm -f "$tmpdepfile" "$tmpdepfile".bak
 639   ;;
 640
 641 cpp)
 642   # Important note: in order to support this mode, a compiler *must*
 643   # always write the preprocessed file to stdout.
 644   "$@" || exit $?
 645
 646   # Remove the call to Libtool.
 647   if test "$libtool" = yes; then
 648     while test "X$1" != 'X--mode=compile'; do
 649       shift
 650     done
 651     shift
 652   fi
 653
 654   # Remove '-o $object'.
 655   IFS=" "
 656   for arg
 657   do
 658     case $arg in
 659     -o)
 660       shift
 661       ;;
 662     $object)
 663       shift
 664       ;;
 665     *)
 666       set fnord "$@" "$arg"
 667       shift # fnord
 668       shift # $arg
 669       ;;
 670     esac
 671   done
 672
 673   "$@" -E \
 674     | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
 675              -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
 676     | sed '$ s: \\$::' > "$tmpdepfile"
 677   rm -f "$depfile"
 678   echo "$object : \\" > "$depfile"
 679   cat < "$tmpdepfile" >> "$depfile"
 680   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 681   rm -f "$tmpdepfile"
 682   ;;
 683
 684 msvisualcpp)
 685   # Important note: in order to support this mode, a compiler *must*
 686   # always write the preprocessed file to stdout.
 687   "$@" || exit $?
 688
 689   # Remove the call to Libtool.
 690   if test "$libtool" = yes; then
 691     while test "X$1" != 'X--mode=compile'; do
 692       shift
 693     done
 694     shift
 695   fi
 696
 697   IFS=" "
 698   for arg
 699   do
 700     case "$arg" in
 701     -o)
 702       shift
 703       ;;
 704     $object)
 705       shift
 706       ;;
 707     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 708         set fnord "$@"
 709         shift
 710         shift
 711         ;;
 712     *)
 713         set fnord "$@" "$arg"
 714         shift
 715         shift
 716         ;;
 717     esac
 718   done
 719   "$@" -E 2>/dev/null |
 720   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
 721   rm -f "$depfile"
 722   echo "$object : \\" > "$depfile"
 723   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
 724   echo "$tab" >> "$depfile"
 725   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 726   rm -f "$tmpdepfile"
 727   ;;
 728
 729 msvcmsys)
 730   # This case exists only to let depend.m4 do its work.  It works by
 731   # looking at the text of this script.  This case will never be run,
 732   # since it is checked for above.
 733   exit 1
 734   ;;
 735
 736 none)
 737   exec "$@"
 738   ;;
 739
 740 *)
 741   echo "Unknown depmode $depmode" 1>&2
 742   exit 1
 743   ;;
 744 esac
 745
 746 exit 0
 747
 748 # Local Variables:
 749 # mode: shell-script
 750 # sh-indentation: 2
 751 # eval: (add-hook 'write-file-hooks 'time-stamp)
 752 # time-stamp-start: "scriptversion="
 753 # time-stamp-format: "%:y-%02m-%02d.%02H"
 754 # time-stamp-time-zone: "UTC"
 755 # time-stamp-end: "; # UTC"
 756 # End: