lib/depcomp

   1 #! /bin/sh
   2 # depcomp - compile a program generating dependencies as side-effects
   3
   4 scriptversion=2003-12-28.12
   5
   6 # Copyright (C) 1999, 2000, 2003 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       tmpdepfile1="$dir.libs/$base.lo.d"
 291       tmpdepfile2="$dir.libs/$base.d"
 292       "$@" -Wc,-MD
 293    else
 294       tmpdepfile1="$dir$base.o.d"
 295       tmpdepfile2="$dir$base.d"
 296       "$@" -MD
 297    fi
 298
 299    stat=$?
 300    if test $stat -eq 0; then :
 301    else
 302       rm -f "$tmpdepfile1" "$tmpdepfile2"
 303       exit $stat
 304    fi
 305
 306    if test -f "$tmpdepfile1"; then
 307       tmpdepfile="$tmpdepfile1"
 308    else
 309       tmpdepfile="$tmpdepfile2"
 310    fi
 311    if test -f "$tmpdepfile"; then
 312       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
 313       # That's a tab and a space in the [].
 314       sed -e 's,^.*\.[a-z]*:[    ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
 315    else
 316       echo "#dummy" > "$depfile"
 317    fi
 318    rm -f "$tmpdepfile"
 319    ;;
 320
 321 #nosideeffect)
 322   # This comment above is used by automake to tell side-effect
 323   # dependency tracking mechanisms from slower ones.
 324
 325 dashmstdout)
 326   # Important note: in order to support this mode, a compiler *must*
 327   # always write the preprocessed file to stdout, regardless of -o.
 328   "$@" || exit $?
 329
 330   # Remove the call to Libtool.
 331   if test "$libtool" = yes; then
 332     while test $1 != '--mode=compile'; do
 333       shift
 334     done
 335     shift
 336   fi
 337
 338   # Remove `-o $object'.
 339   IFS=" "
 340   for arg
 341   do
 342     case $arg in
 343     -o)
 344       shift
 345       ;;
 346     $object)
 347       shift
 348       ;;
 349     *)
 350       set fnord "$@" "$arg"
 351       shift # fnord
 352       shift # $arg
 353       ;;
 354     esac
 355   done
 356
 357   test -z "$dashmflag" && dashmflag=-M
 358   # Require at least two characters before searching for `:'
 359   # in the target name.  This is to cope with DOS-style filenames:
 360   # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
 361   "$@" $dashmflag |
 362     sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
 363   rm -f "$depfile"
 364   cat < "$tmpdepfile" > "$depfile"
 365   tr ' ' '
 366 ' < "$tmpdepfile" | \
 367 ## Some versions of the HPUX 10.20 sed can't process this invocation
 368 ## correctly.  Breaking it into two sed invocations is a workaround.
 369     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 370   rm -f "$tmpdepfile"
 371   ;;
 372
 373 dashXmstdout)
 374   # This case only exists to satisfy depend.m4.  It is never actually
 375   # run, as this mode is specially recognized in the preamble.
 376   exit 1
 377   ;;
 378
 379 makedepend)
 380   "$@" || exit $?
 381   # Remove any Libtool call
 382   if test "$libtool" = yes; then
 383     while test $1 != '--mode=compile'; do
 384       shift
 385     done
 386     shift
 387   fi
 388   # X makedepend
 389   shift
 390   cleared=no
 391   for arg in "$@"; do
 392     case $cleared in
 393     no)
 394       set ""; shift
 395       cleared=yes ;;
 396     esac
 397     case "$arg" in
 398     -D*|-I*)
 399       set fnord "$@" "$arg"; shift ;;
 400     # Strip any option that makedepend may not understand.  Remove
 401     # the object too, otherwise makedepend will parse it as a source file.
 402     -*|$object)
 403       ;;
 404     *)
 405       set fnord "$@" "$arg"; shift ;;
 406     esac
 407   done
 408   obj_suffix="`echo $object | sed 's/^.*\././'`"
 409   touch "$tmpdepfile"
 410   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
 411   rm -f "$depfile"
 412   cat < "$tmpdepfile" > "$depfile"
 413   sed '1,2d' "$tmpdepfile" | tr ' ' '
 414 ' | \
 415 ## Some versions of the HPUX 10.20 sed can't process this invocation
 416 ## correctly.  Breaking it into two sed invocations is a workaround.
 417     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 418   rm -f "$tmpdepfile" "$tmpdepfile".bak
 419   ;;
 420
 421 cpp)
 422   # Important note: in order to support this mode, a compiler *must*
 423   # always write the preprocessed file to stdout.
 424   "$@" || exit $?
 425
 426   # Remove the call to Libtool.
 427   if test "$libtool" = yes; then
 428     while test $1 != '--mode=compile'; do
 429       shift
 430     done
 431     shift
 432   fi
 433
 434   # Remove `-o $object'.
 435   IFS=" "
 436   for arg
 437   do
 438     case $arg in
 439     -o)
 440       shift
 441       ;;
 442     $object)
 443       shift
 444       ;;
 445     *)
 446       set fnord "$@" "$arg"
 447       shift # fnord
 448       shift # $arg
 449       ;;
 450     esac
 451   done
 452
 453   "$@" -E |
 454     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 455     sed '$ s: \\$::' > "$tmpdepfile"
 456   rm -f "$depfile"
 457   echo "$object : \\" > "$depfile"
 458   cat < "$tmpdepfile" >> "$depfile"
 459   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 460   rm -f "$tmpdepfile"
 461   ;;
 462
 463 msvisualcpp)
 464   # Important note: in order to support this mode, a compiler *must*
 465   # always write the preprocessed file to stdout, regardless of -o,
 466   # because we must use -o when running libtool.
 467   "$@" || exit $?
 468   IFS=" "
 469   for arg
 470   do
 471     case "$arg" in
 472     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 473         set fnord "$@"
 474         shift
 475         shift
 476         ;;
 477     *)
 478         set fnord "$@" "$arg"
 479         shift
 480         shift
 481         ;;
 482     esac
 483   done
 484   "$@" -E |
 485   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 486   rm -f "$depfile"
 487   echo "$object : \\" > "$depfile"
 488   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 489   echo "        " >> "$depfile"
 490   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 491   rm -f "$tmpdepfile"
 492   ;;
 493
 494 none)
 495   exec "$@"
 496   ;;
 497
 498 *)
 499   echo "Unknown depmode $depmode" 1>&2
 500   exit 1
 501   ;;
 502 esac
 503
 504 exit 0
 505
 506 # Local Variables:
 507 # mode: shell-script
 508 # sh-indentation: 2
 509 # eval: (add-hook 'write-file-hooks 'time-stamp)
 510 # time-stamp-start: "scriptversion="
 511 # time-stamp-format: "%:y-%02m-%02d.%02H"
 512 # time-stamp-end: "$"
 513 # End: