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"
99 ## gcc 3 implements dependency tracking that does exactly what
100 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
101 ## it if -MD -MP comes after the -MF stuff. Hmm.
102 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
103 ## the command line argument order; so add the flags where they
104 ## appear in depend2.am. Note that the slowdown incurred here
105 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
109 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
110 *) set fnord "$@" "$arg" ;;
117 if test $stat -eq 0; then :
122 mv "$tmpdepfile" "$depfile"
126 ## There are various ways to get dependency output from gcc. Here's
127 ## why we pick this rather obscure method:
128 ## - Don't want to use -MD because we'd like the dependencies to end
129 ## up in a subdir. Having to rename by hand is ugly.
130 ## (We might end up doing this anyway to support other compilers.)
131 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
132 ## -MM, not -M (despite what the docs say).
133 ## - Using -M directly means running the compiler twice (even worse
135 if test -z "$gccflag"; then
138 "$@" -Wp,"$gccflag$tmpdepfile"
140 if test $stat -eq 0; then :
146 echo "$object : \\" > "$depfile"
147 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
148 ## The second -e expression handles DOS-style file names with drive letters.
149 sed -e 's/^[^:]*: / /' \
150 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
151 ## This next piece of magic avoids the `deleted header file' problem.
152 ## The problem is that when a header file which appears in a .P file
153 ## is deleted, the dependency causes make to die (because there is
154 ## typically no way to rebuild the header). We avoid this by adding
155 ## dummy dependencies for each header file. Too bad gcc doesn't do
156 ## this for us directly.
159 ## Some versions of gcc put a space before the `:'. On the theory
160 ## that the space means something, we add a space to the output as
161 ## well. hp depmode also adds that space, but also prefixes the VPATH
162 ## to the object. Take care to not repeat it in the output.
163 ## Some versions of the HPUX 10.20 sed can't process this invocation
164 ## correctly. Breaking it into two sed invocations is a workaround.
165 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
166 | sed -e 's/$/ :/' >> "$depfile"
171 # This case exists only to let depend.m4 do its work. It works by
172 # looking at the text of this script. This case will never be run,
173 # since it is checked for above.
178 if test "$libtool" = yes; then
179 "$@" "-Wp,-MDupdate,$tmpdepfile"
181 "$@" -MDupdate "$tmpdepfile"
184 if test $stat -eq 0; then :
191 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
192 echo "$object : \\" > "$depfile"
194 # Clip off the initial element (the dependent). Don't try to be
195 # clever and replace this with sed code, as IRIX sed won't handle
196 # lines with more than a fixed number of characters (4096 in
197 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
198 # the IRIX cc adds comments like `#:fec' to the end of the
202 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
207 # The second pass generates a dummy entry for each header file.
210 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
213 # The sourcefile does not contain any dependencies, so just
214 # store a dummy comment line, to avoid errors with the Makefile
215 # "include basename.Plo" scheme.
216 echo "#dummy" > "$depfile"
222 # The C for AIX Compiler uses -M and outputs the dependencies
223 # in a .u file. In older versions, this file always lives in the
224 # current directory. Also, the AIX compiler puts `$object:' at the
225 # start of each line; $object doesn't have directory information.
226 # Version 6 uses the directory in both cases.
227 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
228 test "x$dir" = "x$object" && dir=
229 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
230 if test "$libtool" = yes; then
231 tmpdepfile1=$dir$base.u
233 tmpdepfile3=$dir.libs/$base.u
236 tmpdepfile1=$dir$base.u
237 tmpdepfile2=$dir$base.u
238 tmpdepfile3=$dir$base.u
243 if test $stat -eq 0; then :
245 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
249 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
251 test -f "$tmpdepfile" && break
253 if test -f "$tmpdepfile"; then
254 # Each line is of the form `foo.o: dependent.h'.
255 # Do two passes, one to just change these to
256 # `$object: dependent.h' and one to simply `dependent.h:'.
257 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
258 # That's a tab and a space in the [].
259 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
261 # The sourcefile does not contain any dependencies, so just
262 # store a dummy comment line, to avoid errors with the Makefile
263 # "include basename.Plo" scheme.
264 echo "#dummy" > "$depfile"
270 # Intel's C compiler understands `-MD -MF file'. However on
271 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
272 # ICC 7.0 will fill foo.d with something like
275 # which is wrong. We want:
276 # sub/foo.o: sub/foo.c
277 # sub/foo.o: sub/foo.h
280 # ICC 7.1 will output
281 # foo.o: sub/foo.c sub/foo.h
282 # and will wrap long lines using \ :
283 # foo.o: sub/foo.c ... \
287 "$@" -MD -MF "$tmpdepfile"
289 if test $stat -eq 0; then :
295 # Each line is of the form `foo.o: dependent.h',
296 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
297 # Do two passes, one to just change these to
298 # `$object: dependent.h' and one to simply `dependent.h:'.
299 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
300 # Some versions of the HPUX 10.20 sed can't process this invocation
301 # correctly. Breaking it into two sed invocations is a workaround.
302 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
303 sed -e 's/$/ :/' >> "$depfile"
308 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
309 # compilers, which have integrated preprocessors. The correct option
310 # to use with these is +Maked; it writes dependencies to a file named
311 # 'foo.d', which lands next to the object file, wherever that
313 # Much of this is similar to the tru64 case; see comments there.
314 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
315 test "x$dir" = "x$object" && dir=
316 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
317 if test "$libtool" = yes; then
318 tmpdepfile1=$dir$base.d
319 tmpdepfile2=$dir.libs/$base.d
322 tmpdepfile1=$dir$base.d
323 tmpdepfile2=$dir$base.d
327 if test $stat -eq 0; then :
329 rm -f "$tmpdepfile1" "$tmpdepfile2"
333 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
335 test -f "$tmpdepfile" && break
337 if test -f "$tmpdepfile"; then
338 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
339 # Add `dependent.h:' lines.
345 }' "$tmpdepfile" >> "$depfile"
347 echo "#dummy" > "$depfile"
349 rm -f "$tmpdepfile" "$tmpdepfile2"
353 # The Tru64 compiler uses -MD to generate dependencies as a side
354 # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
355 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
356 # dependencies in `foo.d' instead, so we check for that too.
357 # Subdirectories are respected.
358 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
359 test "x$dir" = "x$object" && dir=
360 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
362 if test "$libtool" = yes; then
363 # With Tru64 cc, shared objects can also be used to make a
364 # static library. This mechanism is used in libtool 1.4 series to
365 # handle both shared and static libraries in a single compilation.
366 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
368 # With libtool 1.5 this exception was removed, and libtool now
369 # generates 2 separate objects for the 2 libraries. These two
370 # compilations output dependencies in $dir.libs/$base.o.d and
371 # in $dir$base.o.d. We have to check for both files, because
372 # one of the two compilations can be disabled. We should prefer
373 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
374 # automatically cleaned when .libs/ is deleted, while ignoring
375 # the former would cause a distcleancheck panic.
376 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
377 tmpdepfile2=$dir$base.o.d # libtool 1.5
378 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
379 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
382 tmpdepfile1=$dir$base.o.d
383 tmpdepfile2=$dir$base.d
384 tmpdepfile3=$dir$base.d
385 tmpdepfile4=$dir$base.d
390 if test $stat -eq 0; then :
392 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
396 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
398 test -f "$tmpdepfile" && break
400 if test -f "$tmpdepfile"; then
401 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
402 # That's a tab and a space in the [].
403 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
405 echo "#dummy" > "$depfile"
411 # This comment above is used by automake to tell side-effect
412 # dependency tracking mechanisms from slower ones.
415 # Important note: in order to support this mode, a compiler *must*
416 # always write the preprocessed file to stdout, regardless of -o.
419 # Remove the call to Libtool.
420 if test "$libtool" = yes; then
421 while test "X$1" != 'X--mode=compile'; do
427 # Remove `-o $object'.
439 set fnord "$@" "$arg"
446 test -z "$dashmflag" && dashmflag=-M
447 # Require at least two characters before searching for `:'
448 # in the target name. This is to cope with DOS-style filenames:
449 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
451 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
453 cat < "$tmpdepfile" > "$depfile"
455 ' < "$tmpdepfile" | \
456 ## Some versions of the HPUX 10.20 sed can't process this invocation
457 ## correctly. Breaking it into two sed invocations is a workaround.
458 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
463 # This case only exists to satisfy depend.m4. It is never actually
464 # run, as this mode is specially recognized in the preamble.
470 # Remove any Libtool call
471 if test "$libtool" = yes; then
472 while test "X$1" != 'X--mode=compile'; do
487 if test $eat = yes; then
493 set fnord "$@" "$arg"; shift ;;
494 # Strip any option that makedepend may not understand. Remove
495 # the object too, otherwise makedepend will parse it as a source file.
501 set fnord "$@" "$arg"; shift ;;
504 obj_suffix=`echo "$object" | sed 's/^.*\././'`
506 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
508 # makedepend may prepend the VPATH from the source file name to the object.
509 # No need to regex-escape $object, excess matching of '.' is harmless.
510 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
511 sed '1,2d' "$tmpdepfile" | tr ' ' '
513 ## Some versions of the HPUX 10.20 sed can't process this invocation
514 ## correctly. Breaking it into two sed invocations is a workaround.
515 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
516 rm -f "$tmpdepfile" "$tmpdepfile".bak
520 # Important note: in order to support this mode, a compiler *must*
521 # always write the preprocessed file to stdout.
524 # Remove the call to Libtool.
525 if test "$libtool" = yes; then
526 while test "X$1" != 'X--mode=compile'; do
532 # Remove `-o $object'.
544 set fnord "$@" "$arg"
552 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
553 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
554 sed '$ s: \\$::' > "$tmpdepfile"
556 echo "$object : \\" > "$depfile"
557 cat < "$tmpdepfile" >> "$depfile"
558 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
563 # Important note: in order to support this mode, a compiler *must*
564 # always write the preprocessed file to stdout.
567 # Remove the call to Libtool.
568 if test "$libtool" = yes; then
569 while test "X$1" != 'X--mode=compile'; do
585 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
591 set fnord "$@" "$arg"
597 "$@" -E 2>/dev/null |
598 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
600 echo "$object : \\" > "$depfile"
601 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
602 echo " " >> "$depfile"
603 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
608 # This case exists only to let depend.m4 do its work. It works by
609 # looking at the text of this script. This case will never be run,
610 # since it is checked for above.
619 echo "Unknown depmode $depmode" 1>&2
629 # eval: (add-hook 'write-file-hooks 'time-stamp)
630 # time-stamp-start: "scriptversion="
631 # time-stamp-format: "%:y-%02m-%02d.%02H"
632 # time-stamp-time-zone: "UTC"
633 # time-stamp-end: "; # UTC"