depcomp

   1 #! /bin/sh
   2 # depcomp - compile a program generating dependencies as side-effects
   3
   4 scriptversion=2016-01-11.22; # UTC
   5
   6 # Copyright (C) 1999-2017 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: "UTC0"
 790 # time-stamp-end: "; # UTC"
 791 # End: