2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2012-03-27.16; # 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 anf tcc (Tiny C Compiler) understand '-MD -MF file'.
294 # $CC -MD -MF foo.d -c -o sub/foo.o sub/foo.c
295 # ICC 7.0 will fill foo.d with something like
298 # which is wrong. We want
299 # sub/foo.o: sub/foo.c
300 # sub/foo.o: sub/foo.h
303 # ICC 7.1 will output
304 # foo.o: sub/foo.c sub/foo.h
305 # and will wrap long lines using '\':
306 # foo.o: sub/foo.c ... \
309 # tcc 0.9.26 (FIXME still under development at the moment of writing)
310 # will emit a similar output, but also prepend the continuation lines
311 # with horizontal tabulation characters.
312 "$@" -MD -MF "$tmpdepfile"
314 if test $stat -eq 0; then :
320 # Each line is of the form 'foo.o: dependent.h',
321 # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
322 # Do two passes, one to just change these to
323 # '$object: dependent.h' and one to simply 'dependent.h:'.
324 sed -e "s/^[ $tab][ $tab]*/ /" -e "s,^[^:]*:,$object :," \
325 < "$tmpdepfile" > "$depfile"
327 s/[ '"$tab"'][ '"$tab"']*/ /g
334 ' < "$tmpdepfile" >> "$depfile"
339 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
340 # compilers, which have integrated preprocessors. The correct option
341 # to use with these is +Maked; it writes dependencies to a file named
342 # 'foo.d', which lands next to the object file, wherever that
344 # Much of this is similar to the tru64 case; see comments there.
345 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
346 test "x$dir" = "x$object" && dir=
347 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
348 if test "$libtool" = yes; then
349 tmpdepfile1=$dir$base.d
350 tmpdepfile2=$dir.libs/$base.d
353 tmpdepfile1=$dir$base.d
354 tmpdepfile2=$dir$base.d
358 if test $stat -eq 0; then :
360 rm -f "$tmpdepfile1" "$tmpdepfile2"
364 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
366 test -f "$tmpdepfile" && break
368 if test -f "$tmpdepfile"; then
369 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
370 # Add 'dependent.h:' lines.
376 }' "$tmpdepfile" >> "$depfile"
378 echo "#dummy" > "$depfile"
380 rm -f "$tmpdepfile" "$tmpdepfile2"
384 # The Tru64 compiler uses -MD to generate dependencies as a side
385 # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
386 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
387 # dependencies in 'foo.d' instead, so we check for that too.
388 # Subdirectories are respected.
389 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
390 test "x$dir" = "x$object" && dir=
391 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
393 if test "$libtool" = yes; then
394 # With Tru64 cc, shared objects can also be used to make a
395 # static library. This mechanism is used in libtool 1.4 series to
396 # handle both shared and static libraries in a single compilation.
397 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
399 # With libtool 1.5 this exception was removed, and libtool now
400 # generates 2 separate objects for the 2 libraries. These two
401 # compilations output dependencies in $dir.libs/$base.o.d and
402 # in $dir$base.o.d. We have to check for both files, because
403 # one of the two compilations can be disabled. We should prefer
404 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
405 # automatically cleaned when .libs/ is deleted, while ignoring
406 # the former would cause a distcleancheck panic.
407 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
408 tmpdepfile2=$dir$base.o.d # libtool 1.5
409 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
410 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
413 tmpdepfile1=$dir$base.o.d
414 tmpdepfile2=$dir$base.d
415 tmpdepfile3=$dir$base.d
416 tmpdepfile4=$dir$base.d
421 if test $stat -eq 0; then :
423 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
427 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
429 test -f "$tmpdepfile" && break
431 if test -f "$tmpdepfile"; then
432 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
433 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
435 echo "#dummy" > "$depfile"
441 if test "$libtool" = yes; then
442 showIncludes=-Wc,-showIncludes
444 showIncludes=-showIncludes
446 "$@" $showIncludes > "$tmpdepfile"
448 grep -v '^Note: including file: ' "$tmpdepfile"
449 if test "$stat" = 0; then :
455 echo "$object : \\" > "$depfile"
456 # The first sed program below extracts the file names and escapes
457 # backslashes for cygpath. The second sed program outputs the file
458 # name when reading, but also accumulates all include files in the
459 # hold buffer in order to output them again at the end. This only
460 # works with sed implementations that can handle large buffers.
461 sed < "$tmpdepfile" -n '
462 /^Note: including file: *\(.*\)/ {
466 }' | $cygpath_u | sort -u | sed -n '
468 s/\(.*\)/'"$tab"'\1 \\/p
480 # This case exists only to let depend.m4 do its work. It works by
481 # looking at the text of this script. This case will never be run,
482 # since it is checked for above.
487 # This comment above is used by automake to tell side-effect
488 # dependency tracking mechanisms from slower ones.
491 # Important note: in order to support this mode, a compiler *must*
492 # always write the preprocessed file to stdout, regardless of -o.
495 # Remove the call to Libtool.
496 if test "$libtool" = yes; then
497 while test "X$1" != 'X--mode=compile'; do
503 # Remove '-o $object'.
515 set fnord "$@" "$arg"
522 test -z "$dashmflag" && dashmflag=-M
523 # Require at least two characters before searching for ':'
524 # in the target name. This is to cope with DOS-style filenames:
525 # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
527 sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
529 cat < "$tmpdepfile" > "$depfile"
530 tr ' ' "$nl" < "$tmpdepfile" | \
531 ## Some versions of the HPUX 10.20 sed can't process this invocation
532 ## correctly. Breaking it into two sed invocations is a workaround.
533 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
538 # This case only exists to satisfy depend.m4. It is never actually
539 # run, as this mode is specially recognized in the preamble.
545 # Remove any Libtool call
546 if test "$libtool" = yes; then
547 while test "X$1" != 'X--mode=compile'; do
562 if test $eat = yes; then
568 set fnord "$@" "$arg"; shift ;;
569 # Strip any option that makedepend may not understand. Remove
570 # the object too, otherwise makedepend will parse it as a source file.
576 set fnord "$@" "$arg"; shift ;;
579 obj_suffix=`echo "$object" | sed 's/^.*\././'`
581 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
583 # makedepend may prepend the VPATH from the source file name to the object.
584 # No need to regex-escape $object, excess matching of '.' is harmless.
585 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
586 sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \
587 ## Some versions of the HPUX 10.20 sed can't process this invocation
588 ## correctly. Breaking it into two sed invocations is a workaround.
589 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
590 rm -f "$tmpdepfile" "$tmpdepfile".bak
594 # Important note: in order to support this mode, a compiler *must*
595 # always write the preprocessed file to stdout.
598 # Remove the call to Libtool.
599 if test "$libtool" = yes; then
600 while test "X$1" != 'X--mode=compile'; do
606 # Remove '-o $object'.
618 set fnord "$@" "$arg"
626 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
627 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
628 sed '$ s: \\$::' > "$tmpdepfile"
630 echo "$object : \\" > "$depfile"
631 cat < "$tmpdepfile" >> "$depfile"
632 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
637 # Important note: in order to support this mode, a compiler *must*
638 # always write the preprocessed file to stdout.
641 # Remove the call to Libtool.
642 if test "$libtool" = yes; then
643 while test "X$1" != 'X--mode=compile'; do
659 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
665 set fnord "$@" "$arg"
671 "$@" -E 2>/dev/null |
672 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
674 echo "$object : \\" > "$depfile"
675 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
676 echo "$tab" >> "$depfile"
677 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
682 # This case exists only to let depend.m4 do its work. It works by
683 # looking at the text of this script. This case will never be run,
684 # since it is checked for above.
693 echo "Unknown depmode $depmode" 1>&2
703 # eval: (add-hook 'write-file-hooks 'time-stamp)
704 # time-stamp-start: "scriptversion="
705 # time-stamp-format: "%:y-%02m-%02d.%02H"
706 # time-stamp-time-zone: "UTC"
707 # time-stamp-end: "; # UTC"