depcomp

   1 #! /bin/sh
   2 # depcomp - compile a program generating dependencies as side-effects
   3
   4 scriptversion=2005-02-09.22
   5
   6 # Copyright (C) 1999, 2000, 2003, 2004, 2005 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 $?
  54     ;;
  55   -v | --v*)
  56     echo "depcomp $scriptversion"
  57     exit $?
  58     ;;
  59 esac
  60
  61 if test -z "$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       # With Tru64 cc, shared objects can also be used to make a
 291       # static library.  This mecanism is used in libtool 1.4 series to
 292       # handle both shared and static libraries in a single compilation.
 293       # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
 294       #
 295       # With libtool 1.5 this exception was removed, and libtool now
 296       # generates 2 separate objects for the 2 libraries.  These two
 297       # compilations output dependencies in in $dir.libs/$base.o.d and
 298       # in $dir$base.o.d.  We have to check for both files, because
 299       # one of the two compilations can be disabled.  We should prefer
 300       # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
 301       # automatically cleaned when .libs/ is deleted, while ignoring
 302       # the former would cause a distcleancheck panic.
 303       tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
 304       tmpdepfile2=$dir$base.o.d          # libtool 1.5
 305       tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
 306       tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
 307       "$@" -Wc,-MD
 308    else
 309       tmpdepfile1=$dir$base.o.d
 310       tmpdepfile2=$dir$base.d
 311       tmpdepfile3=$dir$base.d
 312       tmpdepfile4=$dir$base.d
 313       "$@" -MD
 314    fi
 315
 316    stat=$?
 317    if test $stat -eq 0; then :
 318    else
 319       rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
 320       exit $stat
 321    fi
 322
 323    for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
 324    do
 325      test -f "$tmpdepfile" && break
 326    done
 327    if test -f "$tmpdepfile"; then
 328       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
 329       # That's a tab and a space in the [].
 330       sed -e 's,^.*\.[a-z]*:[    ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
 331    else
 332       echo "#dummy" > "$depfile"
 333    fi
 334    rm -f "$tmpdepfile"
 335    ;;
 336
 337 #nosideeffect)
 338   # This comment above is used by automake to tell side-effect
 339   # dependency tracking mechanisms from slower ones.
 340
 341 dashmstdout)
 342   # Important note: in order to support this mode, a compiler *must*
 343   # always write the preprocessed file to stdout, regardless of -o.
 344   "$@" || exit $?
 345
 346   # Remove the call to Libtool.
 347   if test "$libtool" = yes; then
 348     while test $1 != '--mode=compile'; do
 349       shift
 350     done
 351     shift
 352   fi
 353
 354   # Remove `-o $object'.
 355   IFS=" "
 356   for arg
 357   do
 358     case $arg in
 359     -o)
 360       shift
 361       ;;
 362     $object)
 363       shift
 364       ;;
 365     *)
 366       set fnord "$@" "$arg"
 367       shift # fnord
 368       shift # $arg
 369       ;;
 370     esac
 371   done
 372
 373   test -z "$dashmflag" && dashmflag=-M
 374   # Require at least two characters before searching for `:'
 375   # in the target name.  This is to cope with DOS-style filenames:
 376   # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
 377   "$@" $dashmflag |
 378     sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
 379   rm -f "$depfile"
 380   cat < "$tmpdepfile" > "$depfile"
 381   tr ' ' '
 382 ' < "$tmpdepfile" | \
 383 ## Some versions of the HPUX 10.20 sed can't process this invocation
 384 ## correctly.  Breaking it into two sed invocations is a workaround.
 385     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 386   rm -f "$tmpdepfile"
 387   ;;
 388
 389 dashXmstdout)
 390   # This case only exists to satisfy depend.m4.  It is never actually
 391   # run, as this mode is specially recognized in the preamble.
 392   exit 1
 393   ;;
 394
 395 makedepend)
 396   "$@" || exit $?
 397   # Remove any Libtool call
 398   if test "$libtool" = yes; then
 399     while test $1 != '--mode=compile'; do
 400       shift
 401     done
 402     shift
 403   fi
 404   # X makedepend
 405   shift
 406   cleared=no
 407   for arg in "$@"; do
 408     case $cleared in
 409     no)
 410       set ""; shift
 411       cleared=yes ;;
 412     esac
 413     case "$arg" in
 414     -D*|-I*)
 415       set fnord "$@" "$arg"; shift ;;
 416     # Strip any option that makedepend may not understand.  Remove
 417     # the object too, otherwise makedepend will parse it as a source file.
 418     -*|$object)
 419       ;;
 420     *)
 421       set fnord "$@" "$arg"; shift ;;
 422     esac
 423   done
 424   obj_suffix="`echo $object | sed 's/^.*\././'`"
 425   touch "$tmpdepfile"
 426   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
 427   rm -f "$depfile"
 428   cat < "$tmpdepfile" > "$depfile"
 429   sed '1,2d' "$tmpdepfile" | tr ' ' '
 430 ' | \
 431 ## Some versions of the HPUX 10.20 sed can't process this invocation
 432 ## correctly.  Breaking it into two sed invocations is a workaround.
 433     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 434   rm -f "$tmpdepfile" "$tmpdepfile".bak
 435   ;;
 436
 437 cpp)
 438   # Important note: in order to support this mode, a compiler *must*
 439   # always write the preprocessed file to stdout.
 440   "$@" || exit $?
 441
 442   # Remove the call to Libtool.
 443   if test "$libtool" = yes; then
 444     while test $1 != '--mode=compile'; do
 445       shift
 446     done
 447     shift
 448   fi
 449
 450   # Remove `-o $object'.
 451   IFS=" "
 452   for arg
 453   do
 454     case $arg in
 455     -o)
 456       shift
 457       ;;
 458     $object)
 459       shift
 460       ;;
 461     *)
 462       set fnord "$@" "$arg"
 463       shift # fnord
 464       shift # $arg
 465       ;;
 466     esac
 467   done
 468
 469   "$@" -E |
 470     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 471     sed '$ s: \\$::' > "$tmpdepfile"
 472   rm -f "$depfile"
 473   echo "$object : \\" > "$depfile"
 474   cat < "$tmpdepfile" >> "$depfile"
 475   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 476   rm -f "$tmpdepfile"
 477   ;;
 478
 479 msvisualcpp)
 480   # Important note: in order to support this mode, a compiler *must*
 481   # always write the preprocessed file to stdout, regardless of -o,
 482   # because we must use -o when running libtool.
 483   "$@" || exit $?
 484   IFS=" "
 485   for arg
 486   do
 487     case "$arg" in
 488     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 489         set fnord "$@"
 490         shift
 491         shift
 492         ;;
 493     *)
 494         set fnord "$@" "$arg"
 495         shift
 496         shift
 497         ;;
 498     esac
 499   done
 500   "$@" -E |
 501   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 502   rm -f "$depfile"
 503   echo "$object : \\" > "$depfile"
 504   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 505   echo "        " >> "$depfile"
 506   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 507   rm -f "$tmpdepfile"
 508   ;;
 509
 510 none)
 511   exec "$@"
 512   ;;
 513
 514 *)
 515   echo "Unknown depmode $depmode" 1>&2
 516   exit 1
 517   ;;
 518 esac
 519
 520 exit 0
 521
 522 # Local Variables:
 523 # mode: shell-script
 524 # sh-indentation: 2
 525 # eval: (add-hook 'write-file-hooks 'time-stamp)
 526 # time-stamp-start: "scriptversion="
 527 # time-stamp-format: "%:y-%02m-%02d.%02H"
 528 # time-stamp-end: "$"
 529 # End: