source: depcomp

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1#! /bin/sh
2# depcomp - compile a program generating dependencies as side-effects
3
4scriptversion=2006-10-15.18
5
6# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006 Free Software
7# Foundation, Inc.
8
9# This program is free software; you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation; either version 2, or (at your option)
12# any later version.
13
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17# GNU General Public License for more details.
18
19# You should have received a copy of the GNU General Public License
20# along with this program; if not, write to the Free Software
21# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22# 02110-1301, USA.
23
24# As a special exception to the GNU General Public License, if you
25# distribute this file as part of a program that contains a
26# configuration script generated by Autoconf, you may include it under
27# the same distribution terms that you use for the rest of that program.
28
29# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
30
31case $1 in
32  '')
33     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
34     exit 1;
35     ;;
36  -h | --h*)
37    cat <<\EOF
38Usage: depcomp [--help] [--version] PROGRAM [ARGS]
39
40Run PROGRAMS ARGS to compile a file, generating dependencies
41as side-effects.
42
43Environment variables:
44  depmode     Dependency tracking mode.
45  source      Source file read by `PROGRAMS ARGS'.
46  object      Object file output by `PROGRAMS ARGS'.
47  DEPDIR      directory where to store dependencies.
48  depfile     Dependency file to output.
49  tmpdepfile  Temporary file to use when outputing dependencies.
50  libtool     Whether libtool is used (yes/no).
51
52Report bugs to <bug-automake@gnu.org>.
53EOF
54    exit $?
55    ;;
56  -v | --v*)
57    echo "depcomp $scriptversion"
58    exit $?
59    ;;
60esac
61
62if test -z "$depmode" || test -z "$source" || test -z "$object"; then
63  echo "depcomp: Variables source, object and depmode must be set" 1>&2
64  exit 1
65fi
66
67# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
68depfile=${depfile-`echo "$object" |
69  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
70tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
71
72rm -f "$tmpdepfile"
73
74# Some modes work just like other modes, but use different flags.  We
75# parameterize here, but still list the modes in the big case below,
76# to make depend.m4 easier to write.  Note that we *cannot* use a case
77# here, because this file can only contain one case statement.
78if test "$depmode" = hp; then
79  # HP compiler uses -M and no extra arg.
80  gccflag=-M
81  depmode=gcc
82fi
83
84if test "$depmode" = dashXmstdout; then
85   # This is just like dashmstdout with a different argument.
86   dashmflag=-xM
87   depmode=dashmstdout
88fi
89
90case "$depmode" in
91gcc3)
92## gcc 3 implements dependency tracking that does exactly what
93## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
94## it if -MD -MP comes after the -MF stuff.  Hmm.
95## Unfortunately, FreeBSD c89 acceptance of flags depends upon
96## the command line argument order; so add the flags where they
97## appear in depend2.am.  Note that the slowdown incurred here
98## affects only configure: in makefiles, %FASTDEP% shortcuts this.
99  for arg
100  do
101    case $arg in
102    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
103    *)  set fnord "$@" "$arg" ;;
104    esac
105    shift # fnord
106    shift # $arg
107  done
108  "$@"
109  stat=$?
110  if test $stat -eq 0; then :
111  else
112    rm -f "$tmpdepfile"
113    exit $stat
114  fi
115  mv "$tmpdepfile" "$depfile"
116  ;;
117
118gcc)
119## There are various ways to get dependency output from gcc.  Here's
120## why we pick this rather obscure method:
121## - Don't want to use -MD because we'd like the dependencies to end
122##   up in a subdir.  Having to rename by hand is ugly.
123##   (We might end up doing this anyway to support other compilers.)
124## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
125##   -MM, not -M (despite what the docs say).
126## - Using -M directly means running the compiler twice (even worse
127##   than renaming).
128  if test -z "$gccflag"; then
129    gccflag=-MD,
130  fi
131  "$@" -Wp,"$gccflag$tmpdepfile"
132  stat=$?
133  if test $stat -eq 0; then :
134  else
135    rm -f "$tmpdepfile"
136    exit $stat
137  fi
138  rm -f "$depfile"
139  echo "$object : \\" > "$depfile"
140  alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
141## The second -e expression handles DOS-style file names with drive letters.
142  sed -e 's/^[^:]*: / /' \
143      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
144## This next piece of magic avoids the `deleted header file' problem.
145## The problem is that when a header file which appears in a .P file
146## is deleted, the dependency causes make to die (because there is
147## typically no way to rebuild the header).  We avoid this by adding
148## dummy dependencies for each header file.  Too bad gcc doesn't do
149## this for us directly.
150  tr ' ' '
151' < "$tmpdepfile" |
152## Some versions of gcc put a space before the `:'.  On the theory
153## that the space means something, we add a space to the output as
154## well.
155## Some versions of the HPUX 10.20 sed can't process this invocation
156## correctly.  Breaking it into two sed invocations is a workaround.
157    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
158  rm -f "$tmpdepfile"
159  ;;
160
161hp)
162  # This case exists only to let depend.m4 do its work.  It works by
163  # looking at the text of this script.  This case will never be run,
164  # since it is checked for above.
165  exit 1
166  ;;
167
168sgi)
169  if test "$libtool" = yes; then
170    "$@" "-Wp,-MDupdate,$tmpdepfile"
171  else
172    "$@" -MDupdate "$tmpdepfile"
173  fi
174  stat=$?
175  if test $stat -eq 0; then :
176  else
177    rm -f "$tmpdepfile"
178    exit $stat
179  fi
180  rm -f "$depfile"
181
182  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
183    echo "$object : \\" > "$depfile"
184
185    # Clip off the initial element (the dependent).  Don't try to be
186    # clever and replace this with sed code, as IRIX sed won't handle
187    # lines with more than a fixed number of characters (4096 in
188    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
189    # the IRIX cc adds comments like `#:fec' to the end of the
190    # dependency line.
191    tr ' ' '
192' < "$tmpdepfile" \
193    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
194    tr '
195' ' ' >> $depfile
196    echo >> $depfile
197
198    # The second pass generates a dummy entry for each header file.
199    tr ' ' '
200' < "$tmpdepfile" \
201   | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
202   >> $depfile
203  else
204    # The sourcefile does not contain any dependencies, so just
205    # store a dummy comment line, to avoid errors with the Makefile
206    # "include basename.Plo" scheme.
207    echo "#dummy" > "$depfile"
208  fi
209  rm -f "$tmpdepfile"
210  ;;
211
212aix)
213  # The C for AIX Compiler uses -M and outputs the dependencies
214  # in a .u file.  In older versions, this file always lives in the
215  # current directory.  Also, the AIX compiler puts `$object:' at the
216  # start of each line; $object doesn't have directory information.
217  # Version 6 uses the directory in both cases.
218  stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
219  tmpdepfile="$stripped.u"
220  if test "$libtool" = yes; then
221    "$@" -Wc,-M
222  else
223    "$@" -M
224  fi
225  stat=$?
226
227  if test -f "$tmpdepfile"; then :
228  else
229    stripped=`echo "$stripped" | sed 's,^.*/,,'`
230    tmpdepfile="$stripped.u"
231  fi
232
233  if test $stat -eq 0; then :
234  else
235    rm -f "$tmpdepfile"
236    exit $stat
237  fi
238
239  if test -f "$tmpdepfile"; then
240    outname="$stripped.o"
241    # Each line is of the form `foo.o: dependent.h'.
242    # Do two passes, one to just change these to
243    # `$object: dependent.h' and one to simply `dependent.h:'.
244    sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
245    sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
246  else
247    # The sourcefile does not contain any dependencies, so just
248    # store a dummy comment line, to avoid errors with the Makefile
249    # "include basename.Plo" scheme.
250    echo "#dummy" > "$depfile"
251  fi
252  rm -f "$tmpdepfile"
253  ;;
254
255icc)
256  # Intel's C compiler understands `-MD -MF file'.  However on
257  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
258  # ICC 7.0 will fill foo.d with something like
259  #    foo.o: sub/foo.c
260  #    foo.o: sub/foo.h
261  # which is wrong.  We want:
262  #    sub/foo.o: sub/foo.c
263  #    sub/foo.o: sub/foo.h
264  #    sub/foo.c:
265  #    sub/foo.h:
266  # ICC 7.1 will output
267  #    foo.o: sub/foo.c sub/foo.h
268  # and will wrap long lines using \ :
269  #    foo.o: sub/foo.c ... \
270  #     sub/foo.h ... \
271  #     ...
272
273  "$@" -MD -MF "$tmpdepfile"
274  stat=$?
275  if test $stat -eq 0; then :
276  else
277    rm -f "$tmpdepfile"
278    exit $stat
279  fi
280  rm -f "$depfile"
281  # Each line is of the form `foo.o: dependent.h',
282  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
283  # Do two passes, one to just change these to
284  # `$object: dependent.h' and one to simply `dependent.h:'.
285  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
286  # Some versions of the HPUX 10.20 sed can't process this invocation
287  # correctly.  Breaking it into two sed invocations is a workaround.
288  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
289    sed -e 's/$/ :/' >> "$depfile"
290  rm -f "$tmpdepfile"
291  ;;
292
293hp2)
294  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
295  # compilers, which have integrated preprocessors.  The correct option
296  # to use with these is +Maked; it writes dependencies to a file named
297  # 'foo.d', which lands next to the object file, wherever that
298  # happens to be.
299  # Much of this is similar to the tru64 case; see comments there.
300  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
301  test "x$dir" = "x$object" && dir=
302  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
303  if test "$libtool" = yes; then
304    tmpdepfile1=$dir$base.d
305    tmpdepfile2=$dir.libs/$base.d
306    "$@" -Wc,+Maked
307  else
308    tmpdepfile1=$dir$base.d
309    tmpdepfile2=$dir$base.d
310    "$@" +Maked
311  fi
312  stat=$?
313  if test $stat -eq 0; then :
314  else
315     rm -f "$tmpdepfile1" "$tmpdepfile2"
316     exit $stat
317  fi
318
319  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
320  do
321    test -f "$tmpdepfile" && break
322  done
323  if test -f "$tmpdepfile"; then
324    sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
325    # Add `dependent.h:' lines.
326    sed -ne '2,${; s/^ *//; s/ \\*$//; s/$/:/; p;}' "$tmpdepfile" >> "$depfile"
327  else
328    echo "#dummy" > "$depfile"
329  fi
330  rm -f "$tmpdepfile" "$tmpdepfile2"
331  ;;
332
333tru64)
334   # The Tru64 compiler uses -MD to generate dependencies as a side
335   # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
336   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
337   # dependencies in `foo.d' instead, so we check for that too.
338   # Subdirectories are respected.
339   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
340   test "x$dir" = "x$object" && dir=
341   base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
342
343   if test "$libtool" = yes; then
344      # With Tru64 cc, shared objects can also be used to make a
345      # static library.  This mechanism is used in libtool 1.4 series to
346      # handle both shared and static libraries in a single compilation.
347      # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
348      #
349      # With libtool 1.5 this exception was removed, and libtool now
350      # generates 2 separate objects for the 2 libraries.  These two
351      # compilations output dependencies in $dir.libs/$base.o.d and
352      # in $dir$base.o.d.  We have to check for both files, because
353      # one of the two compilations can be disabled.  We should prefer
354      # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
355      # automatically cleaned when .libs/ is deleted, while ignoring
356      # the former would cause a distcleancheck panic.
357      tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
358      tmpdepfile2=$dir$base.o.d          # libtool 1.5
359      tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
360      tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
361      "$@" -Wc,-MD
362   else
363      tmpdepfile1=$dir$base.o.d
364      tmpdepfile2=$dir$base.d
365      tmpdepfile3=$dir$base.d
366      tmpdepfile4=$dir$base.d
367      "$@" -MD
368   fi
369
370   stat=$?
371   if test $stat -eq 0; then :
372   else
373      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
374      exit $stat
375   fi
376
377   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
378   do
379     test -f "$tmpdepfile" && break
380   done
381   if test -f "$tmpdepfile"; then
382      sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
383      # That's a tab and a space in the [].
384      sed -e 's,^.*\.[a-z]*:[    ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
385   else
386      echo "#dummy" > "$depfile"
387   fi
388   rm -f "$tmpdepfile"
389   ;;
390
391#nosideeffect)
392  # This comment above is used by automake to tell side-effect
393  # dependency tracking mechanisms from slower ones.
394
395dashmstdout)
396  # Important note: in order to support this mode, a compiler *must*
397  # always write the preprocessed file to stdout, regardless of -o.
398  "$@" || exit $?
399
400  # Remove the call to Libtool.
401  if test "$libtool" = yes; then
402    while test $1 != '--mode=compile'; do
403      shift
404    done
405    shift
406  fi
407
408  # Remove `-o $object'.
409  IFS=" "
410  for arg
411  do
412    case $arg in
413    -o)
414      shift
415      ;;
416    $object)
417      shift
418      ;;
419    *)
420      set fnord "$@" "$arg"
421      shift # fnord
422      shift # $arg
423      ;;
424    esac
425  done
426
427  test -z "$dashmflag" && dashmflag=-M
428  # Require at least two characters before searching for `:'
429  # in the target name.  This is to cope with DOS-style filenames:
430  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
431  "$@" $dashmflag |
432    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
433  rm -f "$depfile"
434  cat < "$tmpdepfile" > "$depfile"
435  tr ' ' '
436' < "$tmpdepfile" | \
437## Some versions of the HPUX 10.20 sed can't process this invocation
438## correctly.  Breaking it into two sed invocations is a workaround.
439    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
440  rm -f "$tmpdepfile"
441  ;;
442
443dashXmstdout)
444  # This case only exists to satisfy depend.m4.  It is never actually
445  # run, as this mode is specially recognized in the preamble.
446  exit 1
447  ;;
448
449makedepend)
450  "$@" || exit $?
451  # Remove any Libtool call
452  if test "$libtool" = yes; then
453    while test $1 != '--mode=compile'; do
454      shift
455    done
456    shift
457  fi
458  # X makedepend
459  shift
460  cleared=no
461  for arg in "$@"; do
462    case $cleared in
463    no)
464      set ""; shift
465      cleared=yes ;;
466    esac
467    case "$arg" in
468    -D*|-I*)
469      set fnord "$@" "$arg"; shift ;;
470    # Strip any option that makedepend may not understand.  Remove
471    # the object too, otherwise makedepend will parse it as a source file.
472    -*|$object)
473      ;;
474    *)
475      set fnord "$@" "$arg"; shift ;;
476    esac
477  done
478  obj_suffix="`echo $object | sed 's/^.*\././'`"
479  touch "$tmpdepfile"
480  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
481  rm -f "$depfile"
482  cat < "$tmpdepfile" > "$depfile"
483  sed '1,2d' "$tmpdepfile" | tr ' ' '
484' | \
485## Some versions of the HPUX 10.20 sed can't process this invocation
486## correctly.  Breaking it into two sed invocations is a workaround.
487    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
488  rm -f "$tmpdepfile" "$tmpdepfile".bak
489  ;;
490
491cpp)
492  # Important note: in order to support this mode, a compiler *must*
493  # always write the preprocessed file to stdout.
494  "$@" || exit $?
495
496  # Remove the call to Libtool.
497  if test "$libtool" = yes; then
498    while test $1 != '--mode=compile'; do
499      shift
500    done
501    shift
502  fi
503
504  # Remove `-o $object'.
505  IFS=" "
506  for arg
507  do
508    case $arg in
509    -o)
510      shift
511      ;;
512    $object)
513      shift
514      ;;
515    *)
516      set fnord "$@" "$arg"
517      shift # fnord
518      shift # $arg
519      ;;
520    esac
521  done
522
523  "$@" -E |
524    sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
525       -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
526    sed '$ s: \\$::' > "$tmpdepfile"
527  rm -f "$depfile"
528  echo "$object : \\" > "$depfile"
529  cat < "$tmpdepfile" >> "$depfile"
530  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
531  rm -f "$tmpdepfile"
532  ;;
533
534msvisualcpp)
535  # Important note: in order to support this mode, a compiler *must*
536  # always write the preprocessed file to stdout, regardless of -o,
537  # because we must use -o when running libtool.
538  "$@" || exit $?
539  IFS=" "
540  for arg
541  do
542    case "$arg" in
543    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
544        set fnord "$@"
545        shift
546        shift
547        ;;
548    *)
549        set fnord "$@" "$arg"
550        shift
551        shift
552        ;;
553    esac
554  done
555  "$@" -E |
556  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
557  rm -f "$depfile"
558  echo "$object : \\" > "$depfile"
559  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
560  echo "        " >> "$depfile"
561  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
562  rm -f "$tmpdepfile"
563  ;;
564
565none)
566  exec "$@"
567  ;;
568
569*)
570  echo "Unknown depmode $depmode" 1>&2
571  exit 1
572  ;;
573esac
574
575exit 0
576
577# Local Variables:
578# mode: shell-script
579# sh-indentation: 2
580# eval: (add-hook 'write-file-hooks 'time-stamp)
581# time-stamp-start: "scriptversion="
582# time-stamp-format: "%:y-%02m-%02d.%02H"
583# time-stamp-end: "$"
584# End:
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