gnu/dist/texinfo/depcomp

   1 #! /bin/sh
   2 # depcomp - compile a program generating dependencies as side-effects
   3
   4 scriptversion=2004-05-31.23
   5
   6 # Copyright (C) 1999, 2000, 2003, 2004 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, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  21 # 02111-1307, USA.
  22
  23 # As a special exception to the GNU General Public License, if you
  24 # distribute this file as part of a program that contains a
  25 # configuration script generated by Autoconf, you may include it under
  26 # the same distribution terms that you use for the rest of that program.
  27
  28 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
  29
  30 case $1 in
  31   '')
  32      echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
  33      exit 1;
  34      ;;
  35   -h | --h*)
  36     cat <<\EOF
  37 Usage: depcomp [--help] [--version] PROGRAM [ARGS]
  38
  39 Run PROGRAMS ARGS to compile a file, generating dependencies
  40 as side-effects.
  41
  42 Environment variables:
  43   depmode     Dependency tracking mode.
  44   source      Source file read by `PROGRAMS ARGS'.
  45   object      Object file output by `PROGRAMS ARGS'.
  46   DEPDIR      directory where to store dependencies.
  47   depfile     Dependency file to output.
  48   tmpdepfile  Temporary file to use when outputing dependencies.
  49   libtool     Whether libtool is used (yes/no).
  50
  51 Report bugs to <bug-automake@gnu.org>.
  52 EOF
  53     exit 0
  54     ;;
  55   -v | --v*)
  56     echo "depcomp $scriptversion"
  57     exit 0
  58     ;;
  59 esac
  60
  61 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
  62   echo "depcomp: Variables source, object and depmode must be set" 1>&2
  63   exit 1
  64 fi
  65
  66 # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
  67 depfile=${depfile-`echo "$object" |
  68   sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
  69 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
  70
  71 rm -f "$tmpdepfile"
  72
  73 # Some modes work just like other modes, but use different flags.  We
  74 # parameterize here, but still list the modes in the big case below,
  75 # to make depend.m4 easier to write.  Note that we *cannot* use a case
  76 # here, because this file can only contain one case statement.
  77 if test "$depmode" = hp; then
  78   # HP compiler uses -M and no extra arg.
  79   gccflag=-M
  80   depmode=gcc
  81 fi
  82
  83 if test "$depmode" = dashXmstdout; then
  84    # This is just like dashmstdout with a different argument.
  85    dashmflag=-xM
  86    depmode=dashmstdout
  87 fi
  88
  89 case "$depmode" in
  90 gcc3)
  91 ## gcc 3 implements dependency tracking that does exactly what
  92 ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
  93 ## it if -MD -MP comes after the -MF stuff.  Hmm.
  94   "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
  95   stat=$?
  96   if test $stat -eq 0; then :
  97   else
  98     rm -f "$tmpdepfile"
  99     exit $stat
 100   fi
 101   mv "$tmpdepfile" "$depfile"
 102   ;;
 103
 104 gcc)
 105 ## There are various ways to get dependency output from gcc.  Here's
 106 ## why we pick this rather obscure method:
 107 ## - Don't want to use -MD because we'd like the dependencies to end
 108 ##   up in a subdir.  Having to rename by hand is ugly.
 109 ##   (We might end up doing this anyway to support other compilers.)
 110 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
 111 ##   -MM, not -M (despite what the docs say).
 112 ## - Using -M directly means running the compiler twice (even worse
 113 ##   than renaming).
 114   if test -z "$gccflag"; then
 115     gccflag=-MD,
 116   fi
 117   "$@" -Wp,"$gccflag$tmpdepfile"
 118   stat=$?
 119   if test $stat -eq 0; then :
 120   else
 121     rm -f "$tmpdepfile"
 122     exit $stat
 123   fi
 124   rm -f "$depfile"
 125   echo "$object : \\" > "$depfile"
 126   alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
 127 ## The second -e expression handles DOS-style file names with drive letters.
 128   sed -e 's/^[^:]*: / /' \
 129       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
 130 ## This next piece of magic avoids the `deleted header file' problem.
 131 ## The problem is that when a header file which appears in a .P file
 132 ## is deleted, the dependency causes make to die (because there is
 133 ## typically no way to rebuild the header).  We avoid this by adding
 134 ## dummy dependencies for each header file.  Too bad gcc doesn't do
 135 ## this for us directly.
 136   tr ' ' '
 137 ' < "$tmpdepfile" |
 138 ## Some versions of gcc put a space before the `:'.  On the theory
 139 ## that the space means something, we add a space to the output as
 140 ## well.
 141 ## Some versions of the HPUX 10.20 sed can't process this invocation
 142 ## correctly.  Breaking it into two sed invocations is a workaround.
 143     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 144   rm -f "$tmpdepfile"
 145   ;;
 146
 147 hp)
 148   # This case exists only to let depend.m4 do its work.  It works by
 149   # looking at the text of this script.  This case will never be run,
 150   # since it is checked for above.
 151   exit 1
 152   ;;
 153
 154 sgi)
 155   if test "$libtool" = yes; then
 156     "$@" "-Wp,-MDupdate,$tmpdepfile"
 157   else
 158     "$@" -MDupdate "$tmpdepfile"
 159   fi
 160   stat=$?
 161   if test $stat -eq 0; then :
 162   else
 163     rm -f "$tmpdepfile"
 164     exit $stat
 165   fi
 166   rm -f "$depfile"
 167
 168   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
 169     echo "$object : \\" > "$depfile"
 170
 171     # Clip off the initial element (the dependent).  Don't try to be
 172     # clever and replace this with sed code, as IRIX sed won't handle
 173     # lines with more than a fixed number of characters (4096 in
 174     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
 175     # the IRIX cc adds comments like `#:fec' to the end of the
 176     # dependency line.
 177     tr ' ' '
 178 ' < "$tmpdepfile" \
 179     | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
 180     tr '
 181 ' ' ' >> $depfile
 182     echo >> $depfile
 183
 184     # The second pass generates a dummy entry for each header file.
 185     tr ' ' '
 186 ' < "$tmpdepfile" \
 187    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
 188    >> $depfile
 189   else
 190     # The sourcefile does not contain any dependencies, so just
 191     # store a dummy comment line, to avoid errors with the Makefile
 192     # "include basename.Plo" scheme.
 193     echo "#dummy" > "$depfile"
 194   fi
 195   rm -f "$tmpdepfile"
 196   ;;
 197
 198 aix)
 199   # The C for AIX Compiler uses -M and outputs the dependencies
 200   # in a .u file.  In older versions, this file always lives in the
 201   # current directory.  Also, the AIX compiler puts `$object:' at the
 202   # start of each line; $object doesn't have directory information.
 203   # Version 6 uses the directory in both cases.
 204   stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
 205   tmpdepfile="$stripped.u"
 206   if test "$libtool" = yes; then
 207     "$@" -Wc,-M
 208   else
 209     "$@" -M
 210   fi
 211   stat=$?
 212
 213   if test -f "$tmpdepfile"; then :
 214   else
 215     stripped=`echo "$stripped" | sed 's,^.*/,,'`
 216     tmpdepfile="$stripped.u"
 217   fi
 218
 219   if test $stat -eq 0; then :
 220   else
 221     rm -f "$tmpdepfile"
 222     exit $stat
 223   fi
 224
 225   if test -f "$tmpdepfile"; then
 226     outname="$stripped.o"
 227     # Each line is of the form `foo.o: dependent.h'.
 228     # Do two passes, one to just change these to
 229     # `$object: dependent.h' and one to simply `dependent.h:'.
 230     sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
 231     sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
 232   else
 233     # The sourcefile does not contain any dependencies, so just
 234     # store a dummy comment line, to avoid errors with the Makefile
 235     # "include basename.Plo" scheme.
 236     echo "#dummy" > "$depfile"
 237   fi
 238   rm -f "$tmpdepfile"
 239   ;;
 240
 241 icc)
 242   # Intel's C compiler understands `-MD -MF file'.  However on
 243   #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
 244   # ICC 7.0 will fill foo.d with something like
 245   #    foo.o: sub/foo.c
 246   #    foo.o: sub/foo.h
 247   # which is wrong.  We want:
 248   #    sub/foo.o: sub/foo.c
 249   #    sub/foo.o: sub/foo.h
 250   #    sub/foo.c:
 251   #    sub/foo.h:
 252   # ICC 7.1 will output
 253   #    foo.o: sub/foo.c sub/foo.h
 254   # and will wrap long lines using \ :
 255   #    foo.o: sub/foo.c ... \
 256   #     sub/foo.h ... \
 257   #     ...
 258
 259   "$@" -MD -MF "$tmpdepfile"
 260   stat=$?
 261   if test $stat -eq 0; then :
 262   else
 263     rm -f "$tmpdepfile"
 264     exit $stat
 265   fi
 266   rm -f "$depfile"
 267   # Each line is of the form `foo.o: dependent.h',
 268   # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
 269   # Do two passes, one to just change these to
 270   # `$object: dependent.h' and one to simply `dependent.h:'.
 271   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
 272   # Some versions of the HPUX 10.20 sed can't process this invocation
 273   # correctly.  Breaking it into two sed invocations is a workaround.
 274   sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
 275     sed -e 's/$/ :/' >> "$depfile"
 276   rm -f "$tmpdepfile"
 277   ;;
 278
 279 tru64)
 280    # The Tru64 compiler uses -MD to generate dependencies as a side
 281    # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
 282    # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
 283    # dependencies in `foo.d' instead, so we check for that too.
 284    # Subdirectories are respected.
 285    dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
 286    test "x$dir" = "x$object" && dir=
 287    base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
 288
 289    if test "$libtool" = yes; then
 290       # Dependencies are output in .lo.d with libtool 1.4.
 291       # With libtool 1.5 they are output both in $dir.libs/$base.o.d
 292       # and in $dir.libs/$base.o.d and $dir$base.o.d.  We process the
 293       # latter, because the former will be cleaned when $dir.libs is
 294       # erased.
 295       tmpdepfile1="$dir.libs/$base.lo.d"
 296       tmpdepfile2="$dir$base.o.d"
 297       tmpdepfile3="$dir.libs/$base.d"
 298       "$@" -Wc,-MD
 299    else
 300       tmpdepfile1="$dir$base.o.d"
 301       tmpdepfile2="$dir$base.d"
 302       tmpdepfile3="$dir$base.d"
 303       "$@" -MD
 304    fi
 305
 306    stat=$?
 307    if test $stat -eq 0; then :
 308    else
 309       rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
 310       exit $stat
 311    fi
 312
 313    if test -f "$tmpdepfile1"; then
 314       tmpdepfile="$tmpdepfile1"
 315    elif test -f "$tmpdepfile2"; then
 316       tmpdepfile="$tmpdepfile2"
 317    else
 318       tmpdepfile="$tmpdepfile3"
 319    fi
 320    if test -f "$tmpdepfile"; then
 321       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
 322       # That's a tab and a space in the [].
 323       sed -e 's,^.*\.[a-z]*:[    ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
 324    else
 325       echo "#dummy" > "$depfile"
 326    fi
 327    rm -f "$tmpdepfile"
 328    ;;
 329
 330 #nosideeffect)
 331   # This comment above is used by automake to tell side-effect
 332   # dependency tracking mechanisms from slower ones.
 333
 334 dashmstdout)
 335   # Important note: in order to support this mode, a compiler *must*
 336   # always write the preprocessed file to stdout, regardless of -o.
 337   "$@" || exit $?
 338
 339   # Remove the call to Libtool.
 340   if test "$libtool" = yes; then
 341     while test $1 != '--mode=compile'; do
 342       shift
 343     done
 344     shift
 345   fi
 346
 347   # Remove `-o $object'.
 348   IFS=" "
 349   for arg
 350   do
 351     case $arg in
 352     -o)
 353       shift
 354       ;;
 355     $object)
 356       shift
 357       ;;
 358     *)
 359       set fnord "$@" "$arg"
 360       shift # fnord
 361       shift # $arg
 362       ;;
 363     esac
 364   done
 365
 366   test -z "$dashmflag" && dashmflag=-M
 367   # Require at least two characters before searching for `:'
 368   # in the target name.  This is to cope with DOS-style filenames:
 369   # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
 370   "$@" $dashmflag |
 371     sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
 372   rm -f "$depfile"
 373   cat < "$tmpdepfile" > "$depfile"
 374   tr ' ' '
 375 ' < "$tmpdepfile" | \
 376 ## Some versions of the HPUX 10.20 sed can't process this invocation
 377 ## correctly.  Breaking it into two sed invocations is a workaround.
 378     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 379   rm -f "$tmpdepfile"
 380   ;;
 381
 382 dashXmstdout)
 383   # This case only exists to satisfy depend.m4.  It is never actually
 384   # run, as this mode is specially recognized in the preamble.
 385   exit 1
 386   ;;
 387
 388 makedepend)
 389   "$@" || exit $?
 390   # Remove any Libtool call
 391   if test "$libtool" = yes; then
 392     while test $1 != '--mode=compile'; do
 393       shift
 394     done
 395     shift
 396   fi
 397   # X makedepend
 398   shift
 399   cleared=no
 400   for arg in "$@"; do
 401     case $cleared in
 402     no)
 403       set ""; shift
 404       cleared=yes ;;
 405     esac
 406     case "$arg" in
 407     -D*|-I*)
 408       set fnord "$@" "$arg"; shift ;;
 409     # Strip any option that makedepend may not understand.  Remove
 410     # the object too, otherwise makedepend will parse it as a source file.
 411     -*|$object)
 412       ;;
 413     *)
 414       set fnord "$@" "$arg"; shift ;;
 415     esac
 416   done
 417   obj_suffix="`echo $object | sed 's/^.*\././'`"
 418   touch "$tmpdepfile"
 419   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
 420   rm -f "$depfile"
 421   cat < "$tmpdepfile" > "$depfile"
 422   sed '1,2d' "$tmpdepfile" | tr ' ' '
 423 ' | \
 424 ## Some versions of the HPUX 10.20 sed can't process this invocation
 425 ## correctly.  Breaking it into two sed invocations is a workaround.
 426     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 427   rm -f "$tmpdepfile" "$tmpdepfile".bak
 428   ;;
 429
 430 cpp)
 431   # Important note: in order to support this mode, a compiler *must*
 432   # always write the preprocessed file to stdout.
 433   "$@" || exit $?
 434
 435   # Remove the call to Libtool.
 436   if test "$libtool" = yes; then
 437     while test $1 != '--mode=compile'; do
 438       shift
 439     done
 440     shift
 441   fi
 442
 443   # Remove `-o $object'.
 444   IFS=" "
 445   for arg
 446   do
 447     case $arg in
 448     -o)
 449       shift
 450       ;;
 451     $object)
 452       shift
 453       ;;
 454     *)
 455       set fnord "$@" "$arg"
 456       shift # fnord
 457       shift # $arg
 458       ;;
 459     esac
 460   done
 461
 462   "$@" -E |
 463     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 464     sed '$ s: \\$::' > "$tmpdepfile"
 465   rm -f "$depfile"
 466   echo "$object : \\" > "$depfile"
 467   cat < "$tmpdepfile" >> "$depfile"
 468   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 469   rm -f "$tmpdepfile"
 470   ;;
 471
 472 msvisualcpp)
 473   # Important note: in order to support this mode, a compiler *must*
 474   # always write the preprocessed file to stdout, regardless of -o,
 475   # because we must use -o when running libtool.
 476   "$@" || exit $?
 477   IFS=" "
 478   for arg
 479   do
 480     case "$arg" in
 481     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 482         set fnord "$@"
 483         shift
 484         shift
 485         ;;
 486     *)
 487         set fnord "$@" "$arg"
 488         shift
 489         shift
 490         ;;
 491     esac
 492   done
 493   "$@" -E |
 494   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 495   rm -f "$depfile"
 496   echo "$object : \\" > "$depfile"
 497   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 498   echo "        " >> "$depfile"
 499   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 500   rm -f "$tmpdepfile"
 501   ;;
 502
 503 none)
 504   exec "$@"
 505   ;;
 506
 507 *)
 508   echo "Unknown depmode $depmode" 1>&2
 509   exit 1
 510   ;;
 511 esac
 512
 513 exit 0
 514
 515 # Local Variables:
 516 # mode: shell-script
 517 # sh-indentation: 2
 518 # eval: (add-hook 'write-file-hooks 'time-stamp)
 519 # time-stamp-start: "scriptversion="
 520 # time-stamp-format: "%:y-%02m-%02d.%02H"
 521 # time-stamp-end: "$"
 522 # End: