Merge tree-ssa-20020619-branch into mainline.
[thirdparty/gcc.git] / depcomp
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1#! /bin/sh
2
3# depcomp - compile a program generating dependencies as side-effects
4# Copyright 1999, 2000 Free Software Foundation, Inc.
5
6# This program is free software; you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation; either version 2, or (at your option)
9# any later version.
10
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14# GNU General Public License for more details.
15
16# You should have received a copy of the GNU General Public License
17# along with this program; if not, write to the Free Software
18# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
19# 02111-1307, USA.
20
21# As a special exception to the GNU General Public License, if you
22# distribute this file as part of a program that contains a
23# configuration script generated by Autoconf, you may include it under
24# the same distribution terms that you use for the rest of that program.
25
26# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
27
28if test -z "$depmode" || test -z "$source" || test -z "$object"; then
29 echo "depcomp: Variables source, object and depmode must be set" 1>&2
30 exit 1
31fi
32# `libtool' can also be set to `yes' or `no'.
33
34if test -z "$depfile"; then
35 base=`echo "$object" | sed -e 's,^.*/,,' -e 's,\.\([^.]*\)$,.P\1,'`
36 dir=`echo "$object" | sed 's,/.*$,/,'`
37 if test "$dir" = "$object"; then
38 dir=
39 fi
40 # FIXME: should be _deps on DOS.
41 depfile="$dir.deps/$base"
42fi
43
44tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
45
46rm -f "$tmpdepfile"
47
48# Some modes work just like other modes, but use different flags. We
49# parameterize here, but still list the modes in the big case below,
50# to make depend.m4 easier to write. Note that we *cannot* use a case
51# here, because this file can only contain one case statement.
52if test "$depmode" = hp; then
53 # HP compiler uses -M and no extra arg.
54 gccflag=-M
55 depmode=gcc
56fi
57
58if test "$depmode" = dashXmstdout; then
59 # This is just like dashmstdout with a different argument.
60 dashmflag=-xM
61 depmode=dashmstdout
62fi
63
64case "$depmode" in
65gcc3)
66## gcc 3 implements dependency tracking that does exactly what
67## we want. Yay! Note: for some reason libtool 1.4 doesn't like
68## it if -MD -MP comes after the -MF stuff. Hmm.
69 "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
70 stat=$?
71 if test $stat -eq 0; then :
72 else
73 rm -f "$tmpdepfile"
74 exit $stat
75 fi
76 mv "$tmpdepfile" "$depfile"
77 ;;
78
79gcc)
80## There are various ways to get dependency output from gcc. Here's
81## why we pick this rather obscure method:
82## - Don't want to use -MD because we'd like the dependencies to end
83## up in a subdir. Having to rename by hand is ugly.
84## (We might end up doing this anyway to support other compilers.)
85## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
86## -MM, not -M (despite what the docs say).
87## - Using -M directly means running the compiler twice (even worse
88## than renaming).
89 if test -z "$gccflag"; then
90 gccflag=-MD,
91 fi
92 "$@" -Wp,"$gccflag$tmpdepfile"
93 stat=$?
94 if test $stat -eq 0; then :
95 else
96 rm -f "$tmpdepfile"
97 exit $stat
98 fi
99 rm -f "$depfile"
100 echo "$object : \\" > "$depfile"
101 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
102## The second -e expression handles DOS-style file names with drive letters.
103 sed -e 's/^[^:]*: / /' \
104 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
105## This next piece of magic avoids the `deleted header file' problem.
106## The problem is that when a header file which appears in a .P file
107## is deleted, the dependency causes make to die (because there is
108## typically no way to rebuild the header). We avoid this by adding
109## dummy dependencies for each header file. Too bad gcc doesn't do
110## this for us directly.
111 tr ' ' '
112' < "$tmpdepfile" |
113## Some versions of gcc put a space before the `:'. On the theory
114## that the space means something, we add a space to the output as
115## well.
116## Some versions of the HPUX 10.20 sed can't process this invocation
117## correctly. Breaking it into two sed invocations is a workaround.
118 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
119 rm -f "$tmpdepfile"
120 ;;
121
122hp)
123 # This case exists only to let depend.m4 do its work. It works by
124 # looking at the text of this script. This case will never be run,
125 # since it is checked for above.
126 exit 1
127 ;;
128
129sgi)
130 if test "$libtool" = yes; then
131 "$@" "-Wp,-MDupdate,$tmpdepfile"
132 else
133 "$@" -MDupdate "$tmpdepfile"
134 fi
135 stat=$?
136 if test $stat -eq 0; then :
137 else
138 rm -f "$tmpdepfile"
139 exit $stat
140 fi
141 rm -f "$depfile"
142
143 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
144 echo "$object : \\" > "$depfile"
145
146 # Clip off the initial element (the dependent). Don't try to be
147 # clever and replace this with sed code, as IRIX sed won't handle
148 # lines with more than a fixed number of characters (4096 in
149 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
150 # the IRIX cc adds comments like `#:fec' to the end of the
151 # dependency line.
152 tr ' ' '
153' < "$tmpdepfile" \
154 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
155 tr '
156' ' ' >> $depfile
157 echo >> $depfile
158
159 # The second pass generates a dummy entry for each header file.
160 tr ' ' '
161' < "$tmpdepfile" \
162 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
163 >> $depfile
164 else
165 # The sourcefile does not contain any dependencies, so just
166 # store a dummy comment line, to avoid errors with the Makefile
167 # "include basename.Plo" scheme.
168 echo "#dummy" > "$depfile"
169 fi
170 rm -f "$tmpdepfile"
171 ;;
172
173aix)
174 # The C for AIX Compiler uses -M and outputs the dependencies
175 # in a .u file. This file always lives in the current directory.
176 # Also, the AIX compiler puts `$object:' at the start of each line;
177 # $object doesn't have directory information.
178 stripped=`echo "$object" | sed -e 's,^.*/,,' -e 's/\(.*\)\..*$/\1/'`
179 tmpdepfile="$stripped.u"
180 outname="$stripped.o"
181 if test "$libtool" = yes; then
182 "$@" -Wc,-M
183 else
184 "$@" -M
185 fi
186
187 stat=$?
188 if test $stat -eq 0; then :
189 else
190 rm -f "$tmpdepfile"
191 exit $stat
192 fi
193
194 if test -f "$tmpdepfile"; then
195 # Each line is of the form `foo.o: dependent.h'.
196 # Do two passes, one to just change these to
197 # `$object: dependent.h' and one to simply `dependent.h:'.
198 sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
199 sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
200 else
201 # The sourcefile does not contain any dependencies, so just
202 # store a dummy comment line, to avoid errors with the Makefile
203 # "include basename.Plo" scheme.
204 echo "#dummy" > "$depfile"
205 fi
206 rm -f "$tmpdepfile"
207 ;;
208
209icc)
210 # Intel's C compiler understands `-MD -MF file'. However on
211 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
212 # ICC 7.0 will fill foo.d with something like
213 # foo.o: sub/foo.c
214 # foo.o: sub/foo.h
215 # which is wrong. We want:
216 # sub/foo.o: sub/foo.c
217 # sub/foo.o: sub/foo.h
218 # sub/foo.c:
219 # sub/foo.h:
220 # ICC 7.1 will output
221 # foo.o: sub/foo.c sub/foo.h
222 # and will wrap long lines using \ :
223 # foo.o: sub/foo.c ... \
224 # sub/foo.h ... \
225 # ...
226
227 "$@" -MD -MF "$tmpdepfile"
228 stat=$?
229 if test $stat -eq 0; then :
230 else
231 rm -f "$tmpdepfile"
232 exit $stat
233 fi
234 rm -f "$depfile"
235 # Each line is of the form `foo.o: dependent.h',
236 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
237 # Do two passes, one to just change these to
238 # `$object: dependent.h' and one to simply `dependent.h:'.
239 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
240 # Some versions of the HPUX 10.20 sed can't process this invocation
241 # correctly. Breaking it into two sed invocations is a workaround.
242 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
243 sed -e 's/$/ :/' >> "$depfile"
244 rm -f "$tmpdepfile"
245 ;;
246
247tru64)
248 # The Tru64 compiler uses -MD to generate dependencies as a side
249 # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
250 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
251 # dependencies in `foo.d' instead, so we check for that too.
252 # Subdirectories are respected.
253 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
254 test "x$dir" = "x$object" && dir=
255 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
256
257 if test "$libtool" = yes; then
258 tmpdepfile1="$dir.libs/$base.lo.d"
259 tmpdepfile2="$dir.libs/$base.d"
260 "$@" -Wc,-MD
261 else
262 tmpdepfile1="$dir$base.o.d"
263 tmpdepfile2="$dir$base.d"
264 "$@" -MD
265 fi
266
267 stat=$?
268 if test $stat -eq 0; then :
269 else
270 rm -f "$tmpdepfile1" "$tmpdepfile2"
271 exit $stat
272 fi
273
274 if test -f "$tmpdepfile1"; then
275 tmpdepfile="$tmpdepfile1"
276 else
277 tmpdepfile="$tmpdepfile2"
278 fi
279 if test -f "$tmpdepfile"; then
280 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
281 # That's a space and a tab in the [].
282 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
283 else
284 echo "#dummy" > "$depfile"
285 fi
286 rm -f "$tmpdepfile"
287 ;;
288
289#nosideeffect)
290 # This comment above is used by automake to tell side-effect
291 # dependency tracking mechanisms from slower ones.
292
293dashmstdout)
294 # Important note: in order to support this mode, a compiler *must*
295 # always write the proprocessed file to stdout, regardless of -o.
296 "$@" || exit $?
297
298 # Remove the call to Libtool.
299 if test "$libtool" = yes; then
300 while test $1 != '--mode=compile'; do
301 shift
302 done
303 shift
304 fi
305
306 # Remove `-o $object'.
307 IFS=" "
308 for arg
309 do
310 case $arg in
311 -o)
312 shift
313 ;;
314 $object)
315 shift
316 ;;
317 *)
318 set fnord "$@" "$arg"
319 shift # fnord
320 shift # $arg
321 ;;
322 esac
323 done
324
325 test -z "$dashmflag" && dashmflag=-M
326 # Require at least two characters before searching for `:'
327 # in the target name. This is to cope with DOS-style filenames:
328 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
329 "$@" $dashmflag |
330 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
331 rm -f "$depfile"
332 cat < "$tmpdepfile" > "$depfile"
333 tr ' ' '
334' < "$tmpdepfile" | \
335## Some versions of the HPUX 10.20 sed can't process this invocation
336## correctly. Breaking it into two sed invocations is a workaround.
337 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
338 rm -f "$tmpdepfile"
339 ;;
340
341dashXmstdout)
342 # This case only exists to satisfy depend.m4. It is never actually
343 # run, as this mode is specially recognized in the preamble.
344 exit 1
345 ;;
346
347makedepend)
348 "$@" || exit $?
349 # Remove any Libtool call
350 if test "$libtool" = yes; then
351 while test $1 != '--mode=compile'; do
352 shift
353 done
354 shift
355 fi
356 # X makedepend
357 shift
358 cleared=no
359 for arg in "$@"; do
360 case $cleared in
361 no)
362 set ""; shift
363 cleared=yes ;;
364 esac
365 case "$arg" in
366 -D*|-I*)
367 set fnord "$@" "$arg"; shift ;;
368 # Strip any option that makedepend may not understand. Remove
369 # the object too, otherwise makedepend will parse it as a source file.
370 -*|$object)
371 ;;
372 *)
373 set fnord "$@" "$arg"; shift ;;
374 esac
375 done
376 obj_suffix="`echo $object | sed 's/^.*\././'`"
377 touch "$tmpdepfile"
378 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
379 rm -f "$depfile"
380 cat < "$tmpdepfile" > "$depfile"
381 sed '1,2d' "$tmpdepfile" | tr ' ' '
382' | \
383## Some versions of the HPUX 10.20 sed can't process this invocation
384## correctly. Breaking it into two sed invocations is a workaround.
385 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
386 rm -f "$tmpdepfile" "$tmpdepfile".bak
387 ;;
388
389cpp)
390 # Important note: in order to support this mode, a compiler *must*
391 # always write the proprocessed file to stdout.
392 "$@" || exit $?
393
394 # Remove the call to Libtool.
395 if test "$libtool" = yes; then
396 while test $1 != '--mode=compile'; do
397 shift
398 done
399 shift
400 fi
401
402 # Remove `-o $object'.
403 IFS=" "
404 for arg
405 do
406 case $arg in
407 -o)
408 shift
409 ;;
410 $object)
411 shift
412 ;;
413 *)
414 set fnord "$@" "$arg"
415 shift # fnord
416 shift # $arg
417 ;;
418 esac
419 done
420
421 "$@" -E |
422 sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
423 sed '$ s: \\$::' > "$tmpdepfile"
424 rm -f "$depfile"
425 echo "$object : \\" > "$depfile"
426 cat < "$tmpdepfile" >> "$depfile"
427 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
428 rm -f "$tmpdepfile"
429 ;;
430
431msvisualcpp)
432 # Important note: in order to support this mode, a compiler *must*
433 # always write the proprocessed file to stdout, regardless of -o,
434 # because we must use -o when running libtool.
435 "$@" || exit $?
436 IFS=" "
437 for arg
438 do
439 case "$arg" in
440 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
441 set fnord "$@"
442 shift
443 shift
444 ;;
445 *)
446 set fnord "$@" "$arg"
447 shift
448 shift
449 ;;
450 esac
451 done
452 "$@" -E |
453 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
454 rm -f "$depfile"
455 echo "$object : \\" > "$depfile"
456 . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
457 echo " " >> "$depfile"
458 . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
459 rm -f "$tmpdepfile"
460 ;;
461
462none)
463 exec "$@"
464 ;;
465
466*)
467 echo "Unknown depmode $depmode" 1>&2
468 exit 1
469 ;;
470esac
471
472exit 0