2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2012-02-03.15; # UTC
6 # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
7 # 2011, 2012 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 $scriptversion"
60 # A tabulation character.
62 # A newline character.
66 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
67 echo "depcomp: Variables source, object and depmode must be set" 1>&2
71 # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
72 depfile=${depfile-`echo "$object" |
73 sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
74 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
78 # Some modes work just like other modes, but use different flags. We
79 # parameterize here, but still list the modes in the big case below,
80 # to make depend.m4 easier to write. Note that we *cannot* use a case
81 # here, because this file can only contain one case statement.
82 if test "$depmode" = hp; then
83 # HP compiler uses -M and no extra arg.
88 if test "$depmode" = dashXmstdout; then
89 # This is just like dashmstdout with a different argument.
94 cygpath_u="cygpath -u -f -"
95 if test "$depmode" = msvcmsys; then
96 # This is just like msvisualcpp but w/o cygpath translation.
97 # Just convert the backslash-escaped backslashes to single forward
98 # slashes to satisfy depend.m4
99 cygpath_u='sed s,\\\\,/,g'
103 if test "$depmode" = msvc7msys; then
104 # This is just like msvc7 but w/o cygpath translation.
105 # Just convert the backslash-escaped backslashes to single forward
106 # slashes to satisfy depend.m4
107 cygpath_u='sed s,\\\\,/,g'
111 if test "$depmode" = xlc; then
112 # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations.
113 gccflag=-qmakedep=gcc,-MF
119 ## gcc 3 implements dependency tracking that does exactly what
120 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
121 ## it if -MD -MP comes after the -MF stuff. Hmm.
122 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
123 ## the command line argument order; so add the flags where they
124 ## appear in depend2.am. Note that the slowdown incurred here
125 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
129 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
130 *) set fnord "$@" "$arg" ;;
137 if test $stat -eq 0; then :
142 mv "$tmpdepfile" "$depfile"
146 ## There are various ways to get dependency output from gcc. Here's
147 ## why we pick this rather obscure method:
148 ## - Don't want to use -MD because we'd like the dependencies to end
149 ## up in a subdir. Having to rename by hand is ugly.
150 ## (We might end up doing this anyway to support other compilers.)
151 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
152 ## -MM, not -M (despite what the docs say).
153 ## - Using -M directly means running the compiler twice (even worse
155 if test -z "$gccflag"; then
158 "$@" -Wp,"$gccflag$tmpdepfile"
160 if test $stat -eq 0; then :
166 echo "$object : \\" > "$depfile"
167 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
168 ## The second -e expression handles DOS-style file names with drive letters.
169 sed -e 's/^[^:]*: / /' \
170 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
171 ## This next piece of magic avoids the "deleted header file" problem.
172 ## The problem is that when a header file which appears in a .P file
173 ## is deleted, the dependency causes make to die (because there is
174 ## typically no way to rebuild the header). We avoid this by adding
175 ## dummy dependencies for each header file. Too bad gcc doesn't do
176 ## this for us directly.
177 tr ' ' "$nl" < "$tmpdepfile" |
178 ## Some versions of gcc put a space before the ':'. On the theory
179 ## that the space means something, we add a space to the output as
180 ## well. hp depmode also adds that space, but also prefixes the VPATH
181 ## to the object. Take care to not repeat it in the output.
182 ## Some versions of the HPUX 10.20 sed can't process this invocation
183 ## correctly. Breaking it into two sed invocations is a workaround.
184 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
185 | sed -e 's/$/ :/' >> "$depfile"
190 # This case exists only to let depend.m4 do its work. It works by
191 # looking at the text of this script. This case will never be run,
192 # since it is checked for above.
197 if test "$libtool" = yes; then
198 "$@" "-Wp,-MDupdate,$tmpdepfile"
200 "$@" -MDupdate "$tmpdepfile"
203 if test $stat -eq 0; then :
210 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
211 echo "$object : \\" > "$depfile"
213 # Clip off the initial element (the dependent). Don't try to be
214 # clever and replace this with sed code, as IRIX sed won't handle
215 # lines with more than a fixed number of characters (4096 in
216 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
217 # the IRIX cc adds comments like '#:fec' to the end of the
219 tr ' ' "$nl" < "$tmpdepfile" \
220 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
221 tr "$nl" ' ' >> "$depfile"
224 # The second pass generates a dummy entry for each header file.
225 tr ' ' "$nl" < "$tmpdepfile" \
226 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
229 # The sourcefile does not contain any dependencies, so just
230 # store a dummy comment line, to avoid errors with the Makefile
231 # "include basename.Plo" scheme.
232 echo "#dummy" > "$depfile"
238 # This case exists only to let depend.m4 do its work. It works by
239 # looking at the text of this script. This case will never be run,
240 # since it is checked for above.
245 # The C for AIX Compiler uses -M and outputs the dependencies
246 # in a .u file. In older versions, this file always lives in the
247 # current directory. Also, the AIX compiler puts '$object:' at the
248 # start of each line; $object doesn't have directory information.
249 # Version 6 uses the directory in both cases.
250 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
251 test "x$dir" = "x$object" && dir=
252 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
253 if test "$libtool" = yes; then
254 tmpdepfile1=$dir$base.u
256 tmpdepfile3=$dir.libs/$base.u
259 tmpdepfile1=$dir$base.u
260 tmpdepfile2=$dir$base.u
261 tmpdepfile3=$dir$base.u
266 if test $stat -eq 0; then :
268 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
272 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
274 test -f "$tmpdepfile" && break
276 if test -f "$tmpdepfile"; then
277 # Each line is of the form 'foo.o: dependent.h'.
278 # Do two passes, one to just change these to
279 # '$object: dependent.h' and one to simply 'dependent.h:'.
280 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
281 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
283 # The sourcefile does not contain any dependencies, so just
284 # store a dummy comment line, to avoid errors with the Makefile
285 # "include basename.Plo" scheme.
286 echo "#dummy" > "$depfile"
292 # Intel's C compiler understands '-MD -MF file'. However on
293 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
294 # ICC 7.0 will fill foo.d with something like
297 # which is wrong. We want:
298 # sub/foo.o: sub/foo.c
299 # sub/foo.o: sub/foo.h
302 # ICC 7.1 will output
303 # foo.o: sub/foo.c sub/foo.h
304 # and will wrap long lines using \ :
305 # foo.o: sub/foo.c ... \
309 "$@" -MD -MF "$tmpdepfile"
311 if test $stat -eq 0; then :
317 # Each line is of the form 'foo.o: dependent.h',
318 # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
319 # Do two passes, one to just change these to
320 # '$object: dependent.h' and one to simply 'dependent.h:'.
321 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
322 # Some versions of the HPUX 10.20 sed can't process this invocation
323 # correctly. Breaking it into two sed invocations is a workaround.
324 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
325 sed -e 's/$/ :/' >> "$depfile"
330 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
331 # compilers, which have integrated preprocessors. The correct option
332 # to use with these is +Maked; it writes dependencies to a file named
333 # 'foo.d', which lands next to the object file, wherever that
335 # Much of this is similar to the tru64 case; see comments there.
336 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
337 test "x$dir" = "x$object" && dir=
338 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
339 if test "$libtool" = yes; then
340 tmpdepfile1=$dir$base.d
341 tmpdepfile2=$dir.libs/$base.d
344 tmpdepfile1=$dir$base.d
345 tmpdepfile2=$dir$base.d
349 if test $stat -eq 0; then :
351 rm -f "$tmpdepfile1" "$tmpdepfile2"
355 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
357 test -f "$tmpdepfile" && break
359 if test -f "$tmpdepfile"; then
360 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
361 # Add 'dependent.h:' lines.
367 }' "$tmpdepfile" >> "$depfile"
369 echo "#dummy" > "$depfile"
371 rm -f "$tmpdepfile" "$tmpdepfile2"
375 # The Tru64 compiler uses -MD to generate dependencies as a side
376 # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
377 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
378 # dependencies in 'foo.d' instead, so we check for that too.
379 # Subdirectories are respected.
380 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
381 test "x$dir" = "x$object" && dir=
382 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
384 if test "$libtool" = yes; then
385 # With Tru64 cc, shared objects can also be used to make a
386 # static library. This mechanism is used in libtool 1.4 series to
387 # handle both shared and static libraries in a single compilation.
388 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
390 # With libtool 1.5 this exception was removed, and libtool now
391 # generates 2 separate objects for the 2 libraries. These two
392 # compilations output dependencies in $dir.libs/$base.o.d and
393 # in $dir$base.o.d. We have to check for both files, because
394 # one of the two compilations can be disabled. We should prefer
395 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
396 # automatically cleaned when .libs/ is deleted, while ignoring
397 # the former would cause a distcleancheck panic.
398 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
399 tmpdepfile2=$dir$base.o.d # libtool 1.5
400 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
401 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
404 tmpdepfile1=$dir$base.o.d
405 tmpdepfile2=$dir$base.d
406 tmpdepfile3=$dir$base.d
407 tmpdepfile4=$dir$base.d
412 if test $stat -eq 0; then :
414 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
418 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
420 test -f "$tmpdepfile" && break
422 if test -f "$tmpdepfile"; then
423 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
424 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
426 echo "#dummy" > "$depfile"
432 if test "$libtool" = yes; then
433 showIncludes=-Wc,-showIncludes
435 showIncludes=-showIncludes
437 "$@" $showIncludes > "$tmpdepfile"
439 grep -v '^Note: including file: ' "$tmpdepfile"
440 if test "$stat" = 0; then :
446 echo "$object : \\" > "$depfile"
447 # The first sed program below extracts the file names and escapes
448 # backslashes for cygpath. The second sed program outputs the file
449 # name when reading, but also accumulates all include files in the
450 # hold buffer in order to output them again at the end. This only
451 # works with sed implementations that can handle large buffers.
452 sed < "$tmpdepfile" -n '
453 /^Note: including file: *\(.*\)/ {
457 }' | $cygpath_u | sort -u | sed -n '
459 s/\(.*\)/'"$tab"'\1 \\/p
471 # This case exists only to let depend.m4 do its work. It works by
472 # looking at the text of this script. This case will never be run,
473 # since it is checked for above.
478 # This comment above is used by automake to tell side-effect
479 # dependency tracking mechanisms from slower ones.
482 # Important note: in order to support this mode, a compiler *must*
483 # always write the preprocessed file to stdout, regardless of -o.
486 # Remove the call to Libtool.
487 if test "$libtool" = yes; then
488 while test "X$1" != 'X--mode=compile'; do
494 # Remove '-o $object'.
506 set fnord "$@" "$arg"
513 test -z "$dashmflag" && dashmflag=-M
514 # Require at least two characters before searching for ':'
515 # in the target name. This is to cope with DOS-style filenames:
516 # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
518 sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
520 cat < "$tmpdepfile" > "$depfile"
521 tr ' ' "$nl" < "$tmpdepfile" | \
522 ## Some versions of the HPUX 10.20 sed can't process this invocation
523 ## correctly. Breaking it into two sed invocations is a workaround.
524 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
529 # This case only exists to satisfy depend.m4. It is never actually
530 # run, as this mode is specially recognized in the preamble.
536 # Remove any Libtool call
537 if test "$libtool" = yes; then
538 while test "X$1" != 'X--mode=compile'; do
553 if test $eat = yes; then
559 set fnord "$@" "$arg"; shift ;;
560 # Strip any option that makedepend may not understand. Remove
561 # the object too, otherwise makedepend will parse it as a source file.
567 set fnord "$@" "$arg"; shift ;;
570 obj_suffix=`echo "$object" | sed 's/^.*\././'`
572 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
574 # makedepend may prepend the VPATH from the source file name to the object.
575 # No need to regex-escape $object, excess matching of '.' is harmless.
576 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
577 sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \
578 ## Some versions of the HPUX 10.20 sed can't process this invocation
579 ## correctly. Breaking it into two sed invocations is a workaround.
580 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
581 rm -f "$tmpdepfile" "$tmpdepfile".bak
585 # Important note: in order to support this mode, a compiler *must*
586 # always write the preprocessed file to stdout.
589 # Remove the call to Libtool.
590 if test "$libtool" = yes; then
591 while test "X$1" != 'X--mode=compile'; do
597 # Remove '-o $object'.
609 set fnord "$@" "$arg"
617 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
618 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
619 sed '$ s: \\$::' > "$tmpdepfile"
621 echo "$object : \\" > "$depfile"
622 cat < "$tmpdepfile" >> "$depfile"
623 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
628 # Important note: in order to support this mode, a compiler *must*
629 # always write the preprocessed file to stdout.
632 # Remove the call to Libtool.
633 if test "$libtool" = yes; then
634 while test "X$1" != 'X--mode=compile'; do
650 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
656 set fnord "$@" "$arg"
662 "$@" -E 2>/dev/null |
663 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
665 echo "$object : \\" > "$depfile"
666 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
667 echo "$tab" >> "$depfile"
668 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
673 # This case exists only to let depend.m4 do its work. It works by
674 # looking at the text of this script. This case will never be run,
675 # since it is checked for above.
684 echo "Unknown depmode $depmode" 1>&2
694 # eval: (add-hook 'write-file-hooks 'time-stamp)
695 # time-stamp-start: "scriptversion="
696 # time-stamp-format: "%:y-%02m-%02d.%02H"
697 # time-stamp-time-zone: "UTC"
698 # time-stamp-end: "; # UTC"