2006-03-20 Paul Brook <paul@codesourcery.com>
[binutils.git] / depcomp
blob3510ab0ff53b8a3c399759b9367d0a8defad5586
1 #! /bin/sh
2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2005-05-16.16
6 # Copyright (C) 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston, MA
21 # 02110-1301, USA.
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.
28 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
30 case $1 in
31 '')
32 echo "$0: No command. Try \`$0 --help' for more information." 1>&2
33 exit 1;
35 -h | --h*)
36 cat <<\EOF
37 Usage: depcomp [--help] [--version] PROGRAM [ARGS]
39 Run PROGRAMS ARGS to compile a file, generating dependencies
40 as side-effects.
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).
51 Report bugs to <bug-automake@gnu.org>.
52 EOF
53 exit $?
55 -v | --v*)
56 echo "depcomp $scriptversion"
57 exit $?
59 esac
61 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
62 echo "depcomp: Variables source, object and depmode must be set" 1>&2
63 exit 1
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/\.\([^.]*\)$/.T\1/'`}
71 rm -f "$tmpdepfile"
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 "$depmode" = hp; then
78 # HP compiler uses -M and no extra arg.
79 gccflag=-M
80 depmode=gcc
83 if test "$depmode" = dashXmstdout; then
84 # This is just like dashmstdout with a different argument.
85 dashmflag=-xM
86 depmode=dashmstdout
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 $stat
101 mv "$tmpdepfile" "$depfile"
104 gcc)
105 ## There are various ways to get dependency output from gcc. Here's
106 ## why we pick this rather obscure method:
107 ## - Don't want to use -MD because we'd like the dependencies to end
108 ## up in a subdir. Having to rename by hand is ugly.
109 ## (We might end up doing this anyway to support other compilers.)
110 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
111 ## -MM, not -M (despite what the docs say).
112 ## - Using -M directly means running the compiler twice (even worse
113 ## than renaming).
114 if test -z "$gccflag"; then
115 gccflag=-MD,
117 "$@" -Wp,"$gccflag$tmpdepfile"
118 stat=$?
119 if test $stat -eq 0; then :
120 else
121 rm -f "$tmpdepfile"
122 exit $stat
124 rm -f "$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 "$tmpdepfile"
148 # This case exists only to let depend.m4 do its work. It works by
149 # looking at the text of this script. This case will never be run,
150 # since it is checked for above.
151 exit 1
154 sgi)
155 if test "$libtool" = yes; then
156 "$@" "-Wp,-MDupdate,$tmpdepfile"
157 else
158 "$@" -MDupdate "$tmpdepfile"
160 stat=$?
161 if test $stat -eq 0; then :
162 else
163 rm -f "$tmpdepfile"
164 exit $stat
166 rm -f "$depfile"
168 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
169 echo "$object : \\" > "$depfile"
171 # Clip off the initial element (the dependent). Don't try to be
172 # clever and replace this with sed code, as IRIX sed won't handle
173 # lines with more than a fixed number of characters (4096 in
174 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
175 # the IRIX cc adds comments like `#:fec' to the end of the
176 # dependency line.
177 tr ' ' '
178 ' < "$tmpdepfile" \
179 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
180 tr '
181 ' ' ' >> $depfile
182 echo >> $depfile
184 # The second pass generates a dummy entry for each header file.
185 tr ' ' '
186 ' < "$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"
195 rm -f "$tmpdepfile"
198 aix)
199 # The C for AIX Compiler uses -M and outputs the dependencies
200 # in a .u file. In older versions, this file always lives in the
201 # current directory. Also, the AIX compiler puts `$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 "$@" -M
211 stat=$?
213 if test -f "$tmpdepfile"; then :
214 else
215 stripped=`echo "$stripped" | sed 's,^.*/,,'`
216 tmpdepfile="$stripped.u"
219 if test $stat -eq 0; then :
220 else
221 rm -f "$tmpdepfile"
222 exit $stat
225 if test -f "$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"
238 rm -f "$tmpdepfile"
241 icc)
242 # Intel's C compiler understands `-MD -MF file'. However on
243 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
244 # ICC 7.0 will fill foo.d with something like
245 # foo.o: sub/foo.c
246 # foo.o: sub/foo.h
247 # which is wrong. We want:
248 # sub/foo.o: sub/foo.c
249 # sub/foo.o: sub/foo.h
250 # sub/foo.c:
251 # sub/foo.h:
252 # ICC 7.1 will output
253 # foo.o: sub/foo.c sub/foo.h
254 # and will wrap long lines using \ :
255 # foo.o: sub/foo.c ... \
256 # sub/foo.h ... \
257 # ...
259 "$@" -MD -MF "$tmpdepfile"
260 stat=$?
261 if test $stat -eq 0; then :
262 else
263 rm -f "$tmpdepfile"
264 exit $stat
266 rm -f "$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"
279 ia64hp)
280 # The "hp" stanza above does not work with HP's ia64 compilers,
281 # which have integrated preprocessors. The correct option to use
282 # with these is +Maked; it writes dependencies to a file named
283 # 'foo.d', which lands next to the object file, wherever that
284 # happens to be.
285 tmpdepfile=`echo "$object" | sed -e 's/\.o$/.d/'`
286 "$@" +Maked
287 stat=$?
288 if test $stat -eq 0; then :
289 else
290 rm -f "$tmpdepfile"
291 exit $stat
293 rm -f "$depfile"
295 # The object file name is correct already.
296 cat "$tmpdepfile" > "$depfile"
297 # Add `dependent.h:' lines.
298 sed -ne '2,${; s/^ //; s/ \\*$//; s/$/:/; p; }' "$tmpdepfile" >> "$depfile"
299 rm -f "$tmpdepfile"
302 tru64)
303 # The Tru64 compiler uses -MD to generate dependencies as a side
304 # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
305 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
306 # dependencies in `foo.d' instead, so we check for that too.
307 # Subdirectories are respected.
308 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
309 test "x$dir" = "x$object" && dir=
310 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
312 if test "$libtool" = yes; then
313 # With Tru64 cc, shared objects can also be used to make a
314 # static library. This mecanism is used in libtool 1.4 series to
315 # handle both shared and static libraries in a single compilation.
316 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
318 # With libtool 1.5 this exception was removed, and libtool now
319 # generates 2 separate objects for the 2 libraries. These two
320 # compilations output dependencies in in $dir.libs/$base.o.d and
321 # in $dir$base.o.d. We have to check for both files, because
322 # one of the two compilations can be disabled. We should prefer
323 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
324 # automatically cleaned when .libs/ is deleted, while ignoring
325 # the former would cause a distcleancheck panic.
326 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
327 tmpdepfile2=$dir$base.o.d # libtool 1.5
328 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
329 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
330 "$@" -Wc,-MD
331 else
332 tmpdepfile1=$dir$base.o.d
333 tmpdepfile2=$dir$base.d
334 tmpdepfile3=$dir$base.d
335 tmpdepfile4=$dir$base.d
336 "$@" -MD
339 stat=$?
340 if test $stat -eq 0; then :
341 else
342 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
343 exit $stat
346 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
348 test -f "$tmpdepfile" && break
349 done
350 if test -f "$tmpdepfile"; then
351 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
352 # That's a tab and a space in the [].
353 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
354 else
355 echo "#dummy" > "$depfile"
357 rm -f "$tmpdepfile"
360 #nosideeffect)
361 # This comment above is used by automake to tell side-effect
362 # dependency tracking mechanisms from slower ones.
364 dashmstdout)
365 # Important note: in order to support this mode, a compiler *must*
366 # always write the preprocessed file to stdout, regardless of -o.
367 "$@" || exit $?
369 # Remove the call to Libtool.
370 if test "$libtool" = yes; then
371 while test $1 != '--mode=compile'; do
372 shift
373 done
374 shift
377 # Remove `-o $object'.
378 IFS=" "
379 for arg
381 case $arg in
383 shift
385 $object)
386 shift
389 set fnord "$@" "$arg"
390 shift # fnord
391 shift # $arg
393 esac
394 done
396 test -z "$dashmflag" && dashmflag=-M
397 # Require at least two characters before searching for `:'
398 # in the target name. This is to cope with DOS-style filenames:
399 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
400 "$@" $dashmflag |
401 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
402 rm -f "$depfile"
403 cat < "$tmpdepfile" > "$depfile"
404 tr ' ' '
405 ' < "$tmpdepfile" | \
406 ## Some versions of the HPUX 10.20 sed can't process this invocation
407 ## correctly. Breaking it into two sed invocations is a workaround.
408 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
409 rm -f "$tmpdepfile"
412 dashXmstdout)
413 # This case only exists to satisfy depend.m4. It is never actually
414 # run, as this mode is specially recognized in the preamble.
415 exit 1
418 makedepend)
419 "$@" || exit $?
420 # Remove any Libtool call
421 if test "$libtool" = yes; then
422 while test $1 != '--mode=compile'; do
423 shift
424 done
425 shift
427 # X makedepend
428 shift
429 cleared=no
430 for arg in "$@"; do
431 case $cleared in
433 set ""; shift
434 cleared=yes ;;
435 esac
436 case "$arg" in
437 -D*|-I*)
438 set fnord "$@" "$arg"; shift ;;
439 # Strip any option that makedepend may not understand. Remove
440 # the object too, otherwise makedepend will parse it as a source file.
441 -*|$object)
444 set fnord "$@" "$arg"; shift ;;
445 esac
446 done
447 obj_suffix="`echo $object | sed 's/^.*\././'`"
448 touch "$tmpdepfile"
449 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
450 rm -f "$depfile"
451 cat < "$tmpdepfile" > "$depfile"
452 sed '1,2d' "$tmpdepfile" | tr ' ' '
453 ' | \
454 ## Some versions of the HPUX 10.20 sed can't process this invocation
455 ## correctly. Breaking it into two sed invocations is a workaround.
456 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
457 rm -f "$tmpdepfile" "$tmpdepfile".bak
460 cpp)
461 # Important note: in order to support this mode, a compiler *must*
462 # always write the preprocessed file to stdout.
463 "$@" || exit $?
465 # Remove the call to Libtool.
466 if test "$libtool" = yes; then
467 while test $1 != '--mode=compile'; do
468 shift
469 done
470 shift
473 # Remove `-o $object'.
474 IFS=" "
475 for arg
477 case $arg in
479 shift
481 $object)
482 shift
485 set fnord "$@" "$arg"
486 shift # fnord
487 shift # $arg
489 esac
490 done
492 "$@" -E |
493 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
494 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
495 sed '$ s: \\$::' > "$tmpdepfile"
496 rm -f "$depfile"
497 echo "$object : \\" > "$depfile"
498 cat < "$tmpdepfile" >> "$depfile"
499 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
500 rm -f "$tmpdepfile"
503 msvisualcpp)
504 # Important note: in order to support this mode, a compiler *must*
505 # always write the preprocessed file to stdout, regardless of -o,
506 # because we must use -o when running libtool.
507 "$@" || exit $?
508 IFS=" "
509 for arg
511 case "$arg" in
512 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
513 set fnord "$@"
514 shift
515 shift
518 set fnord "$@" "$arg"
519 shift
520 shift
522 esac
523 done
524 "$@" -E |
525 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
526 rm -f "$depfile"
527 echo "$object : \\" > "$depfile"
528 . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
529 echo " " >> "$depfile"
530 . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
531 rm -f "$tmpdepfile"
534 none)
535 exec "$@"
539 echo "Unknown depmode $depmode" 1>&2
540 exit 1
542 esac
544 exit 0
546 # Local Variables:
547 # mode: shell-script
548 # sh-indentation: 2
549 # eval: (add-hook 'write-file-hooks 'time-stamp)
550 # time-stamp-start: "scriptversion="
551 # time-stamp-format: "%:y-%02m-%02d.%02H"
552 # time-stamp-end: "$"
553 # End: