lib/depcomp

   1 #! /bin/sh
   2 # depcomp - compile a program generating dependencies as side-effects
   3
   4 scriptversion=2004-04-24.12
   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 have been reported to be
 291       # output in either .lo.d or .o.d.
 292       tmpdepfile1="$dir.libs/$base.lo.d"
 293       tmpdepfile2="$dir.libs/$base.o.d"
 294       tmpdepfile3="$dir.libs/$base.d"
 295       "$@" -Wc,-MD
 296    else
 297       tmpdepfile1="$dir$base.o.d"
 298       tmpdepfile2="$dir$base.d"
 299       tmpdepfile3="$dir$base.d"
 300       "$@" -MD
 301    fi
 302
 303    stat=$?
 304    if test $stat -eq 0; then :
 305    else
 306       rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
 307       exit $stat
 308    fi
 309
 310    if test -f "$tmpdepfile1"; then
 311       tmpdepfile="$tmpdepfile1"
 312    elif test -f "$tmpdepfile2"; then
 313       tmpdepfile="$tmpdepfile2"
 314    else
 315       tmpdepfile="$tmpdepfile3"
 316    fi
 317    if test -f "$tmpdepfile"; then
 318       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
 319       # That's a tab and a space in the [].
 320       sed -e 's,^.*\.[a-z]*:[    ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
 321    else
 322       echo "#dummy" > "$depfile"
 323    fi
 324    rm -f "$tmpdepfile"
 325    ;;
 326
 327 #nosideeffect)
 328   # This comment above is used by automake to tell side-effect
 329   # dependency tracking mechanisms from slower ones.
 330
 331 dashmstdout)
 332   # Important note: in order to support this mode, a compiler *must*
 333   # always write the preprocessed file to stdout, regardless of -o.
 334   "$@" || exit $?
 335
 336   # Remove the call to Libtool.
 337   if test "$libtool" = yes; then
 338     while test $1 != '--mode=compile'; do
 339       shift
 340     done
 341     shift
 342   fi
 343
 344   # Remove `-o $object'.
 345   IFS=" "
 346   for arg
 347   do
 348     case $arg in
 349     -o)
 350       shift
 351       ;;
 352     $object)
 353       shift
 354       ;;
 355     *)
 356       set fnord "$@" "$arg"
 357       shift # fnord
 358       shift # $arg
 359       ;;
 360     esac
 361   done
 362
 363   test -z "$dashmflag" && dashmflag=-M
 364   # Require at least two characters before searching for `:'
 365   # in the target name.  This is to cope with DOS-style filenames:
 366   # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
 367   "$@" $dashmflag |
 368     sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
 369   rm -f "$depfile"
 370   cat < "$tmpdepfile" > "$depfile"
 371   tr ' ' '
 372 ' < "$tmpdepfile" | \
 373 ## Some versions of the HPUX 10.20 sed can't process this invocation
 374 ## correctly.  Breaking it into two sed invocations is a workaround.
 375     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 376   rm -f "$tmpdepfile"
 377   ;;
 378
 379 dashXmstdout)
 380   # This case only exists to satisfy depend.m4.  It is never actually
 381   # run, as this mode is specially recognized in the preamble.
 382   exit 1
 383   ;;
 384
 385 makedepend)
 386   "$@" || exit $?
 387   # Remove any Libtool call
 388   if test "$libtool" = yes; then
 389     while test $1 != '--mode=compile'; do
 390       shift
 391     done
 392     shift
 393   fi
 394   # X makedepend
 395   shift
 396   cleared=no
 397   for arg in "$@"; do
 398     case $cleared in
 399     no)
 400       set ""; shift
 401       cleared=yes ;;
 402     esac
 403     case "$arg" in
 404     -D*|-I*)
 405       set fnord "$@" "$arg"; shift ;;
 406     # Strip any option that makedepend may not understand.  Remove
 407     # the object too, otherwise makedepend will parse it as a source file.
 408     -*|$object)
 409       ;;
 410     *)
 411       set fnord "$@" "$arg"; shift ;;
 412     esac
 413   done
 414   obj_suffix="`echo $object | sed 's/^.*\././'`"
 415   touch "$tmpdepfile"
 416   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
 417   rm -f "$depfile"
 418   cat < "$tmpdepfile" > "$depfile"
 419   sed '1,2d' "$tmpdepfile" | tr ' ' '
 420 ' | \
 421 ## Some versions of the HPUX 10.20 sed can't process this invocation
 422 ## correctly.  Breaking it into two sed invocations is a workaround.
 423     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 424   rm -f "$tmpdepfile" "$tmpdepfile".bak
 425   ;;
 426
 427 cpp)
 428   # Important note: in order to support this mode, a compiler *must*
 429   # always write the preprocessed file to stdout.
 430   "$@" || exit $?
 431
 432   # Remove the call to Libtool.
 433   if test "$libtool" = yes; then
 434     while test $1 != '--mode=compile'; do
 435       shift
 436     done
 437     shift
 438   fi
 439
 440   # Remove `-o $object'.
 441   IFS=" "
 442   for arg
 443   do
 444     case $arg in
 445     -o)
 446       shift
 447       ;;
 448     $object)
 449       shift
 450       ;;
 451     *)
 452       set fnord "$@" "$arg"
 453       shift # fnord
 454       shift # $arg
 455       ;;
 456     esac
 457   done
 458
 459   "$@" -E |
 460     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 461     sed '$ s: \\$::' > "$tmpdepfile"
 462   rm -f "$depfile"
 463   echo "$object : \\" > "$depfile"
 464   cat < "$tmpdepfile" >> "$depfile"
 465   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 466   rm -f "$tmpdepfile"
 467   ;;
 468
 469 msvisualcpp)
 470   # Important note: in order to support this mode, a compiler *must*
 471   # always write the preprocessed file to stdout, regardless of -o,
 472   # because we must use -o when running libtool.
 473   "$@" || exit $?
 474   IFS=" "
 475   for arg
 476   do
 477     case "$arg" in
 478     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 479         set fnord "$@"
 480         shift
 481         shift
 482         ;;
 483     *)
 484         set fnord "$@" "$arg"
 485         shift
 486         shift
 487         ;;
 488     esac
 489   done
 490   "$@" -E |
 491   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 492   rm -f "$depfile"
 493   echo "$object : \\" > "$depfile"
 494   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 495   echo "        " >> "$depfile"
 496   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 497   rm -f "$tmpdepfile"
 498   ;;
 499
 500 none)
 501   exec "$@"
 502   ;;
 503
 504 *)
 505   echo "Unknown depmode $depmode" 1>&2
 506   exit 1
 507   ;;
 508 esac
 509
 510 exit 0
 511
 512 # Local Variables:
 513 # mode: shell-script
 514 # sh-indentation: 2
 515 # eval: (add-hook 'write-file-hooks 'time-stamp)
 516 # time-stamp-start: "scriptversion="
 517 # time-stamp-format: "%:y-%02m-%02d.%02H"
 518 # time-stamp-end: "$"
 519 # End: