2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2011-12-04.11; # UTC
6 # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2011,
7 # Free Software Foundation, Inc.
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)
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.
19 # You should have received a copy of the GNU General Public License
20 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 # As a special exception to the GNU General Public License, if you
23 # distribute this file as part of a program that contains a
24 # configuration script generated by Autoconf, you may include it under
25 # the same distribution terms that you use for the rest of that program.
27 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
31 echo "$0: No command. Try \`$0 --help' for more information." 1>&2
36 Usage: depcomp [--help] [--version] PROGRAM [ARGS]
38 Run PROGRAMS ARGS to compile a file, generating dependencies
41 Environment variables:
42 depmode Dependency tracking mode.
43 source Source file read by `PROGRAMS ARGS'.
44 object Object file output by `PROGRAMS ARGS'.
45 DEPDIR directory where to store dependencies.
46 depfile Dependency file to output.
47 tmpdepfile Temporary file to use when outputting dependencies.
48 libtool Whether libtool is used (yes/no).
50 Report bugs to <bug-automake@gnu.org>.
55 echo "depcomp $scriptversion"
60 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
61 echo "depcomp: Variables source, object and depmode must be set" 1>&2
65 # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
66 depfile=${depfile-`echo "$object" |
67 sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
68 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
72 # Some modes work just like other modes, but use different flags. We
73 # parameterize here, but still list the modes in the big case below,
74 # to make depend.m4 easier to write. Note that we *cannot* use a case
75 # here, because this file can only contain one case statement.
76 if test "$depmode" = hp; then
77 # HP compiler uses -M and no extra arg.
82 if test "$depmode" = dashXmstdout; then
83 # This is just like dashmstdout with a different argument.
88 cygpath_u="cygpath -u -f -"
89 if test "$depmode" = msvcmsys; then
90 # This is just like msvisualcpp but w/o cygpath translation.
91 # Just convert the backslash-escaped backslashes to single forward
92 # slashes to satisfy depend.m4
93 cygpath_u="sed s,\\\\\\\\,/,g"
97 if test "$depmode" = xlc; then
98 # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations.
99 gccflag=-qmakedep=gcc,-MF
105 ## gcc 3 implements dependency tracking that does exactly what
106 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
107 ## it if -MD -MP comes after the -MF stuff. Hmm.
108 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
109 ## the command line argument order; so add the flags where they
110 ## appear in depend2.am. Note that the slowdown incurred here
111 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
115 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
116 *) set fnord "$@" "$arg" ;;
123 if test $stat -eq 0; then :
128 mv "$tmpdepfile" "$depfile"
132 ## There are various ways to get dependency output from gcc. Here's
133 ## why we pick this rather obscure method:
134 ## - Don't want to use -MD because we'd like the dependencies to end
135 ## up in a subdir. Having to rename by hand is ugly.
136 ## (We might end up doing this anyway to support other compilers.)
137 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
138 ## -MM, not -M (despite what the docs say).
139 ## - Using -M directly means running the compiler twice (even worse
141 if test -z "$gccflag"; then
144 "$@" -Wp,"$gccflag$tmpdepfile"
146 if test $stat -eq 0; then :
152 echo "$object : \\" > "$depfile"
153 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
154 ## The second -e expression handles DOS-style file names with drive letters.
155 sed -e 's/^[^:]*: / /' \
156 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
157 ## This next piece of magic avoids the `deleted header file' problem.
158 ## The problem is that when a header file which appears in a .P file
159 ## is deleted, the dependency causes make to die (because there is
160 ## typically no way to rebuild the header). We avoid this by adding
161 ## dummy dependencies for each header file. Too bad gcc doesn't do
162 ## this for us directly.
165 ## Some versions of gcc put a space before the `:'. On the theory
166 ## that the space means something, we add a space to the output as
167 ## well. hp depmode also adds that space, but also prefixes the VPATH
168 ## to the object. Take care to not repeat it in the output.
169 ## Some versions of the HPUX 10.20 sed can't process this invocation
170 ## correctly. Breaking it into two sed invocations is a workaround.
171 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
172 | sed -e 's/$/ :/' >> "$depfile"
177 # This case exists only to let depend.m4 do its work. It works by
178 # looking at the text of this script. This case will never be run,
179 # since it is checked for above.
184 if test "$libtool" = yes; then
185 "$@" "-Wp,-MDupdate,$tmpdepfile"
187 "$@" -MDupdate "$tmpdepfile"
190 if test $stat -eq 0; then :
197 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
198 echo "$object : \\" > "$depfile"
200 # Clip off the initial element (the dependent). Don't try to be
201 # clever and replace this with sed code, as IRIX sed won't handle
202 # lines with more than a fixed number of characters (4096 in
203 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
204 # the IRIX cc adds comments like `#:fec' to the end of the
208 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
213 # The second pass generates a dummy entry for each header file.
216 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
219 # The sourcefile does not contain any dependencies, so just
220 # store a dummy comment line, to avoid errors with the Makefile
221 # "include basename.Plo" scheme.
222 echo "#dummy" > "$depfile"
228 # This case exists only to let depend.m4 do its work. It works by
229 # looking at the text of this script. This case will never be run,
230 # since it is checked for above.
235 # The C for AIX Compiler uses -M and outputs the dependencies
236 # in a .u file. In older versions, this file always lives in the
237 # current directory. Also, the AIX compiler puts `$object:' at the
238 # start of each line; $object doesn't have directory information.
239 # Version 6 uses the directory in both cases.
240 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
241 test "x$dir" = "x$object" && dir=
242 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
243 if test "$libtool" = yes; then
244 tmpdepfile1=$dir$base.u
246 tmpdepfile3=$dir.libs/$base.u
249 tmpdepfile1=$dir$base.u
250 tmpdepfile2=$dir$base.u
251 tmpdepfile3=$dir$base.u
256 if test $stat -eq 0; then :
258 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
262 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
264 test -f "$tmpdepfile" && break
266 if test -f "$tmpdepfile"; then
267 # Each line is of the form `foo.o: dependent.h'.
268 # Do two passes, one to just change these to
269 # `$object: dependent.h' and one to simply `dependent.h:'.
270 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
271 # That's a tab and a space in the [].
272 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
274 # The sourcefile does not contain any dependencies, so just
275 # store a dummy comment line, to avoid errors with the Makefile
276 # "include basename.Plo" scheme.
277 echo "#dummy" > "$depfile"
283 # Intel's C compiler understands `-MD -MF file'. However on
284 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
285 # ICC 7.0 will fill foo.d with something like
288 # which is wrong. We want:
289 # sub/foo.o: sub/foo.c
290 # sub/foo.o: sub/foo.h
293 # ICC 7.1 will output
294 # foo.o: sub/foo.c sub/foo.h
295 # and will wrap long lines using \ :
296 # foo.o: sub/foo.c ... \
300 "$@" -MD -MF "$tmpdepfile"
302 if test $stat -eq 0; then :
308 # Each line is of the form `foo.o: dependent.h',
309 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
310 # Do two passes, one to just change these to
311 # `$object: dependent.h' and one to simply `dependent.h:'.
312 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
313 # Some versions of the HPUX 10.20 sed can't process this invocation
314 # correctly. Breaking it into two sed invocations is a workaround.
315 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
316 sed -e 's/$/ :/' >> "$depfile"
321 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
322 # compilers, which have integrated preprocessors. The correct option
323 # to use with these is +Maked; it writes dependencies to a file named
324 # 'foo.d', which lands next to the object file, wherever that
326 # Much of this is similar to the tru64 case; see comments there.
327 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
328 test "x$dir" = "x$object" && dir=
329 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
330 if test "$libtool" = yes; then
331 tmpdepfile1=$dir$base.d
332 tmpdepfile2=$dir.libs/$base.d
335 tmpdepfile1=$dir$base.d
336 tmpdepfile2=$dir$base.d
340 if test $stat -eq 0; then :
342 rm -f "$tmpdepfile1" "$tmpdepfile2"
346 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
348 test -f "$tmpdepfile" && break
350 if test -f "$tmpdepfile"; then
351 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
352 # Add `dependent.h:' lines.
358 }' "$tmpdepfile" >> "$depfile"
360 echo "#dummy" > "$depfile"
362 rm -f "$tmpdepfile" "$tmpdepfile2"
366 # The Tru64 compiler uses -MD to generate dependencies as a side
367 # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
368 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
369 # dependencies in `foo.d' instead, so we check for that too.
370 # Subdirectories are respected.
371 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
372 test "x$dir" = "x$object" && dir=
373 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
375 if test "$libtool" = yes; then
376 # With Tru64 cc, shared objects can also be used to make a
377 # static library. This mechanism is used in libtool 1.4 series to
378 # handle both shared and static libraries in a single compilation.
379 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
381 # With libtool 1.5 this exception was removed, and libtool now
382 # generates 2 separate objects for the 2 libraries. These two
383 # compilations output dependencies in $dir.libs/$base.o.d and
384 # in $dir$base.o.d. We have to check for both files, because
385 # one of the two compilations can be disabled. We should prefer
386 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
387 # automatically cleaned when .libs/ is deleted, while ignoring
388 # the former would cause a distcleancheck panic.
389 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
390 tmpdepfile2=$dir$base.o.d # libtool 1.5
391 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
392 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
395 tmpdepfile1=$dir$base.o.d
396 tmpdepfile2=$dir$base.d
397 tmpdepfile3=$dir$base.d
398 tmpdepfile4=$dir$base.d
403 if test $stat -eq 0; then :
405 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
409 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
411 test -f "$tmpdepfile" && break
413 if test -f "$tmpdepfile"; then
414 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
415 # That's a tab and a space in the [].
416 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
418 echo "#dummy" > "$depfile"
424 # This comment above is used by automake to tell side-effect
425 # dependency tracking mechanisms from slower ones.
428 # Important note: in order to support this mode, a compiler *must*
429 # always write the preprocessed file to stdout, regardless of -o.
432 # Remove the call to Libtool.
433 if test "$libtool" = yes; then
434 while test "X$1" != 'X--mode=compile'; do
440 # Remove `-o $object'.
452 set fnord "$@" "$arg"
459 test -z "$dashmflag" && dashmflag=-M
460 # Require at least two characters before searching for `:'
461 # in the target name. This is to cope with DOS-style filenames:
462 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
464 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
466 cat < "$tmpdepfile" > "$depfile"
468 ' < "$tmpdepfile" | \
469 ## Some versions of the HPUX 10.20 sed can't process this invocation
470 ## correctly. Breaking it into two sed invocations is a workaround.
471 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
476 # This case only exists to satisfy depend.m4. It is never actually
477 # run, as this mode is specially recognized in the preamble.
483 # Remove any Libtool call
484 if test "$libtool" = yes; then
485 while test "X$1" != 'X--mode=compile'; do
500 if test $eat = yes; then
506 set fnord "$@" "$arg"; shift ;;
507 # Strip any option that makedepend may not understand. Remove
508 # the object too, otherwise makedepend will parse it as a source file.
514 set fnord "$@" "$arg"; shift ;;
517 obj_suffix=`echo "$object" | sed 's/^.*\././'`
519 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
521 # makedepend may prepend the VPATH from the source file name to the object.
522 # No need to regex-escape $object, excess matching of '.' is harmless.
523 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
524 sed '1,2d' "$tmpdepfile" | tr ' ' '
526 ## Some versions of the HPUX 10.20 sed can't process this invocation
527 ## correctly. Breaking it into two sed invocations is a workaround.
528 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
529 rm -f "$tmpdepfile" "$tmpdepfile".bak
533 # Important note: in order to support this mode, a compiler *must*
534 # always write the preprocessed file to stdout.
537 # Remove the call to Libtool.
538 if test "$libtool" = yes; then
539 while test "X$1" != 'X--mode=compile'; do
545 # Remove `-o $object'.
557 set fnord "$@" "$arg"
565 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
566 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
567 sed '$ s: \\$::' > "$tmpdepfile"
569 echo "$object : \\" > "$depfile"
570 cat < "$tmpdepfile" >> "$depfile"
571 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
576 # Important note: in order to support this mode, a compiler *must*
577 # always write the preprocessed file to stdout.
580 # Remove the call to Libtool.
581 if test "$libtool" = yes; then
582 while test "X$1" != 'X--mode=compile'; do
598 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
604 set fnord "$@" "$arg"
610 "$@" -E 2>/dev/null |
611 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
613 echo "$object : \\" > "$depfile"
614 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
615 echo " " >> "$depfile"
616 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
621 # This case exists only to let depend.m4 do its work. It works by
622 # looking at the text of this script. This case will never be run,
623 # since it is checked for above.
632 echo "Unknown depmode $depmode" 1>&2
642 # eval: (add-hook 'write-file-hooks 'time-stamp)
643 # time-stamp-start: "scriptversion="
644 # time-stamp-format: "%:y-%02m-%02d.%02H"
645 # time-stamp-time-zone: "UTC"
646 # time-stamp-end: "; # UTC"