depcomp

   1 #! /bin/sh
   2 # depcomp - compile a program generating dependencies as side-effects
   3
   4 scriptversion=2004-04-25.13
   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   depfile     Dependency file to output.
  47   tmpdepfile  Temporary file to use when outputing dependencies.
  48   libtool     Whether libtool is used (yes/no).
  49
  50 Report bugs to <bug-automake@gnu.org>.
  51 EOF
  52     exit 0
  53     ;;
  54   -v | --v*)
  55     echo "depcomp $scriptversion"
  56     exit 0
  57     ;;
  58 esac
  59
  60 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
  61   echo "depcomp: Variables source, object and depmode must be set" 1>&2
  62   exit 1
  63 fi
  64 # `libtool' can also be set to `yes' or `no'.
  65
  66 if test -z "$depfile"; then
  67    base=`echo "$object" | sed -e 's,^.*/,,' -e 's,\.\([^.]*\)$,.P\1,'`
  68    dir=`echo "$object" | sed 's,/.*$,/,'`
  69    if test "$dir" = "$object"; then
  70       dir=
  71    fi
  72    # FIXME: should be _deps on DOS.
  73    depfile="$dir.deps/$base"
  74 fi
  75
  76 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
  77
  78 rm -f "$tmpdepfile"
  79
  80 # Some modes work just like other modes, but use different flags.  We
  81 # parameterize here, but still list the modes in the big case below,
  82 # to make depend.m4 easier to write.  Note that we *cannot* use a case
  83 # here, because this file can only contain one case statement.
  84 if test "$depmode" = hp; then
  85   # HP compiler uses -M and no extra arg.
  86   gccflag=-M
  87   depmode=gcc
  88 fi
  89
  90 if test "$depmode" = dashXmstdout; then
  91    # This is just like dashmstdout with a different argument.
  92    dashmflag=-xM
  93    depmode=dashmstdout
  94 fi
  95
  96 case "$depmode" in
  97 gcc3)
  98 ## gcc 3 implements dependency tracking that does exactly what
  99 ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
 100 ## it if -MD -MP comes after the -MF stuff.  Hmm.
 101   "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
 102   stat=$?
 103   if test $stat -eq 0; then :
 104   else
 105     rm -f "$tmpdepfile"
 106     exit $stat
 107   fi
 108   mv "$tmpdepfile" "$depfile"
 109   ;;
 110
 111 gcc)
 112 ## There are various ways to get dependency output from gcc.  Here's
 113 ## why we pick this rather obscure method:
 114 ## - Don't want to use -MD because we'd like the dependencies to end
 115 ##   up in a subdir.  Having to rename by hand is ugly.
 116 ##   (We might end up doing this anyway to support other compilers.)
 117 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
 118 ##   -MM, not -M (despite what the docs say).
 119 ## - Using -M directly means running the compiler twice (even worse
 120 ##   than renaming).
 121   if test -z "$gccflag"; then
 122     gccflag=-MD,
 123   fi
 124   "$@" -Wp,"$gccflag$tmpdepfile"
 125   stat=$?
 126   if test $stat -eq 0; then :
 127   else
 128     rm -f "$tmpdepfile"
 129     exit $stat
 130   fi
 131   rm -f "$depfile"
 132   echo "$object : \\" > "$depfile"
 133   alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
 134 ## The second -e expression handles DOS-style file names with drive letters.
 135   sed -e 's/^[^:]*: / /' \
 136       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
 137 ## This next piece of magic avoids the `deleted header file' problem.
 138 ## The problem is that when a header file which appears in a .P file
 139 ## is deleted, the dependency causes make to die (because there is
 140 ## typically no way to rebuild the header).  We avoid this by adding
 141 ## dummy dependencies for each header file.  Too bad gcc doesn't do
 142 ## this for us directly.
 143   tr ' ' '
 144 ' < "$tmpdepfile" |
 145 ## Some versions of gcc put a space before the `:'.  On the theory
 146 ## that the space means something, we add a space to the output as
 147 ## well.
 148 ## Some versions of the HPUX 10.20 sed can't process this invocation
 149 ## correctly.  Breaking it into two sed invocations is a workaround.
 150     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 151   rm -f "$tmpdepfile"
 152   ;;
 153
 154 hp)
 155   # This case exists only to let depend.m4 do its work.  It works by
 156   # looking at the text of this script.  This case will never be run,
 157   # since it is checked for above.
 158   exit 1
 159   ;;
 160
 161 sgi)
 162   if test "$libtool" = yes; then
 163     "$@" "-Wp,-MDupdate,$tmpdepfile"
 164   else
 165     "$@" -MDupdate "$tmpdepfile"
 166   fi
 167   stat=$?
 168   if test $stat -eq 0; then :
 169   else
 170     rm -f "$tmpdepfile"
 171     exit $stat
 172   fi
 173   rm -f "$depfile"
 174
 175   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
 176     echo "$object : \\" > "$depfile"
 177
 178     # Clip off the initial element (the dependent).  Don't try to be
 179     # clever and replace this with sed code, as IRIX sed won't handle
 180     # lines with more than a fixed number of characters (4096 in
 181     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
 182     # the IRIX cc adds comments like `#:fec' to the end of the
 183     # dependency line.
 184     tr ' ' '
 185 ' < "$tmpdepfile" \
 186     | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
 187     tr '
 188 ' ' ' >> $depfile
 189     echo >> $depfile
 190
 191     # The second pass generates a dummy entry for each header file.
 192     tr ' ' '
 193 ' < "$tmpdepfile" \
 194    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
 195    >> $depfile
 196   else
 197     # The sourcefile does not contain any dependencies, so just
 198     # store a dummy comment line, to avoid errors with the Makefile
 199     # "include basename.Plo" scheme.
 200     echo "#dummy" > "$depfile"
 201   fi
 202   rm -f "$tmpdepfile"
 203   ;;
 204
 205 aix)
 206   # The C for AIX Compiler uses -M and outputs the dependencies
 207   # in a .u file.  In older versions, this file always lives in the
 208   # current directory.  Also, the AIX compiler puts `$object:' at the
 209   # start of each line; $object doesn't have directory information.
 210   # Version 6 uses the directory in both cases.
 211   stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
 212   tmpdepfile="$stripped.u"
 213   if test "$libtool" = yes; then
 214     "$@" -Wc,-M
 215   else
 216     "$@" -M
 217   fi
 218   stat=$?
 219
 220   if test -f "$tmpdepfile"; then :
 221   else
 222     stripped=`echo "$stripped" | sed 's,^.*/,,'`
 223     tmpdepfile="$stripped.u"
 224   fi
 225
 226   if test $stat -eq 0; then :
 227   else
 228     rm -f "$tmpdepfile"
 229     exit $stat
 230   fi
 231
 232   if test -f "$tmpdepfile"; then
 233     outname="$stripped.o"
 234     # Each line is of the form `foo.o: dependent.h'.
 235     # Do two passes, one to just change these to
 236     # `$object: dependent.h' and one to simply `dependent.h:'.
 237     sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
 238     sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
 239   else
 240     # The sourcefile does not contain any dependencies, so just
 241     # store a dummy comment line, to avoid errors with the Makefile
 242     # "include basename.Plo" scheme.
 243     echo "#dummy" > "$depfile"
 244   fi
 245   rm -f "$tmpdepfile"
 246   ;;
 247
 248 icc)
 249   # Intel's C compiler understands `-MD -MF file'.  However on
 250   #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
 251   # ICC 7.0 will fill foo.d with something like
 252   #    foo.o: sub/foo.c
 253   #    foo.o: sub/foo.h
 254   # which is wrong.  We want:
 255   #    sub/foo.o: sub/foo.c
 256   #    sub/foo.o: sub/foo.h
 257   #    sub/foo.c:
 258   #    sub/foo.h:
 259   # ICC 7.1 will output
 260   #    foo.o: sub/foo.c sub/foo.h
 261   # and will wrap long lines using \ :
 262   #    foo.o: sub/foo.c ... \
 263   #     sub/foo.h ... \
 264   #     ...
 265
 266   "$@" -MD -MF "$tmpdepfile"
 267   stat=$?
 268   if test $stat -eq 0; then :
 269   else
 270     rm -f "$tmpdepfile"
 271     exit $stat
 272   fi
 273   rm -f "$depfile"
 274   # Each line is of the form `foo.o: dependent.h',
 275   # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
 276   # Do two passes, one to just change these to
 277   # `$object: dependent.h' and one to simply `dependent.h:'.
 278   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
 279   # Some versions of the HPUX 10.20 sed can't process this invocation
 280   # correctly.  Breaking it into two sed invocations is a workaround.
 281   sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
 282     sed -e 's/$/ :/' >> "$depfile"
 283   rm -f "$tmpdepfile"
 284   ;;
 285
 286 tru64)
 287    # The Tru64 compiler uses -MD to generate dependencies as a side
 288    # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
 289    # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
 290    # dependencies in `foo.d' instead, so we check for that too.
 291    # Subdirectories are respected.
 292    dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
 293    test "x$dir" = "x$object" && dir=
 294    base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
 295
 296    if test "$libtool" = yes; then
 297       # Dependencies are output in .lo.d with libtool 1.4.
 298       # They are output in .o.d with libtool 1.5.
 299       tmpdepfile1="$dir.libs/$base.lo.d"
 300       tmpdepfile2="$dir.libs/$base.o.d"
 301       tmpdepfile3="$dir.libs/$base.d"
 302       "$@" -Wc,-MD
 303    else
 304       tmpdepfile1="$dir$base.o.d"
 305       tmpdepfile2="$dir$base.d"
 306       tmpdepfile3="$dir$base.d"
 307       "$@" -MD
 308    fi
 309
 310    stat=$?
 311    if test $stat -eq 0; then :
 312    else
 313       rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
 314       exit $stat
 315    fi
 316
 317    if test -f "$tmpdepfile1"; then
 318       tmpdepfile="$tmpdepfile1"
 319    elif test -f "$tmpdepfile2"; then
 320       tmpdepfile="$tmpdepfile2"
 321    else
 322       tmpdepfile="$tmpdepfile3"
 323    fi
 324    if test -f "$tmpdepfile"; then
 325       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
 326       # That's a tab and a space in the [].
 327       sed -e 's,^.*\.[a-z]*:[    ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
 328    else
 329       echo "#dummy" > "$depfile"
 330    fi
 331    rm -f "$tmpdepfile"
 332    ;;
 333
 334 #nosideeffect)
 335   # This comment above is used by automake to tell side-effect
 336   # dependency tracking mechanisms from slower ones.
 337
 338 dashmstdout)
 339   # Important note: in order to support this mode, a compiler *must*
 340   # always write the preprocessed file to stdout, regardless of -o.
 341   "$@" || exit $?
 342
 343   # Remove the call to Libtool.
 344   if test "$libtool" = yes; then
 345     while test $1 != '--mode=compile'; do
 346       shift
 347     done
 348     shift
 349   fi
 350
 351   # Remove `-o $object'.
 352   IFS=" "
 353   for arg
 354   do
 355     case $arg in
 356     -o)
 357       shift
 358       ;;
 359     $object)
 360       shift
 361       ;;
 362     *)
 363       set fnord "$@" "$arg"
 364       shift # fnord
 365       shift # $arg
 366       ;;
 367     esac
 368   done
 369
 370   test -z "$dashmflag" && dashmflag=-M
 371   # Require at least two characters before searching for `:'
 372   # in the target name.  This is to cope with DOS-style filenames:
 373   # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
 374   "$@" $dashmflag |
 375     sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
 376   rm -f "$depfile"
 377   cat < "$tmpdepfile" > "$depfile"
 378   tr ' ' '
 379 ' < "$tmpdepfile" | \
 380 ## Some versions of the HPUX 10.20 sed can't process this invocation
 381 ## correctly.  Breaking it into two sed invocations is a workaround.
 382     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 383   rm -f "$tmpdepfile"
 384   ;;
 385
 386 dashXmstdout)
 387   # This case only exists to satisfy depend.m4.  It is never actually
 388   # run, as this mode is specially recognized in the preamble.
 389   exit 1
 390   ;;
 391
 392 makedepend)
 393   "$@" || exit $?
 394   # Remove any Libtool call
 395   if test "$libtool" = yes; then
 396     while test $1 != '--mode=compile'; do
 397       shift
 398     done
 399     shift
 400   fi
 401   # X makedepend
 402   shift
 403   cleared=no
 404   for arg in "$@"; do
 405     case $cleared in
 406     no)
 407       set ""; shift
 408       cleared=yes ;;
 409     esac
 410     case "$arg" in
 411     -D*|-I*)
 412       set fnord "$@" "$arg"; shift ;;
 413     # Strip any option that makedepend may not understand.  Remove
 414     # the object too, otherwise makedepend will parse it as a source file.
 415     -*|$object)
 416       ;;
 417     *)
 418       set fnord "$@" "$arg"; shift ;;
 419     esac
 420   done
 421   obj_suffix="`echo $object | sed 's/^.*\././'`"
 422   touch "$tmpdepfile"
 423   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
 424   rm -f "$depfile"
 425   cat < "$tmpdepfile" > "$depfile"
 426   sed '1,2d' "$tmpdepfile" | tr ' ' '
 427 ' | \
 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 -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 431   rm -f "$tmpdepfile" "$tmpdepfile".bak
 432   ;;
 433
 434 cpp)
 435   # Important note: in order to support this mode, a compiler *must*
 436   # always write the preprocessed file to stdout.
 437   "$@" || exit $?
 438
 439   # Remove the call to Libtool.
 440   if test "$libtool" = yes; then
 441     while test $1 != '--mode=compile'; do
 442       shift
 443     done
 444     shift
 445   fi
 446
 447   # Remove `-o $object'.
 448   IFS=" "
 449   for arg
 450   do
 451     case $arg in
 452     -o)
 453       shift
 454       ;;
 455     $object)
 456       shift
 457       ;;
 458     *)
 459       set fnord "$@" "$arg"
 460       shift # fnord
 461       shift # $arg
 462       ;;
 463     esac
 464   done
 465
 466   "$@" -E |
 467     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 468     sed '$ s: \\$::' > "$tmpdepfile"
 469   rm -f "$depfile"
 470   echo "$object : \\" > "$depfile"
 471   cat < "$tmpdepfile" >> "$depfile"
 472   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 473   rm -f "$tmpdepfile"
 474   ;;
 475
 476 msvisualcpp)
 477   # Important note: in order to support this mode, a compiler *must*
 478   # always write the preprocessed file to stdout, regardless of -o,
 479   # because we must use -o when running libtool.
 480   "$@" || exit $?
 481   IFS=" "
 482   for arg
 483   do
 484     case "$arg" in
 485     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 486         set fnord "$@"
 487         shift
 488         shift
 489         ;;
 490     *)
 491         set fnord "$@" "$arg"
 492         shift
 493         shift
 494         ;;
 495     esac
 496   done
 497   "$@" -E |
 498   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 499   rm -f "$depfile"
 500   echo "$object : \\" > "$depfile"
 501   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 502   echo "        " >> "$depfile"
 503   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 504   rm -f "$tmpdepfile"
 505   ;;
 506
 507 none)
 508   exec "$@"
 509   ;;
 510
 511 *)
 512   echo "Unknown depmode $depmode" 1>&2
 513   exit 1
 514   ;;
 515 esac
 516
 517 exit 0
 518
 519 # Local Variables:
 520 # mode: shell-script
 521 # sh-indentation: 2
 522 # eval: (add-hook 'write-file-hooks 'time-stamp)
 523 # time-stamp-start: "scriptversion="
 524 # time-stamp-format: "%:y-%02m-%02d.%02H"
 525 # time-stamp-end: "$"
 526 # End: