2 # depcomp - compile a program generating dependencies as side-effects
5 scriptversion=2011-12-04.11; # UTC
7 scriptversion=2012-03-12.15; # UTC
10 # Copyright (C) 1999-2012 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program. If not, see <http://www.gnu.org/licenses/>.
25 # As a special exception to the GNU General Public License, if you
26 # distribute this file as part of a program that contains a
27 # configuration script generated by Autoconf, you may include it under
28 # the same distribution terms that you use for the rest of that program.
30 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
34 echo "$0: No command. Try '$0 --help' for more information." 1>&2
39 Usage: depcomp [--help] [--version] PROGRAM [ARGS]
41 Run PROGRAMS ARGS to compile a file, generating dependencies
44 Environment variables:
45 depmode Dependency tracking mode.
46 source Source file read by 'PROGRAMS ARGS'.
47 object Object file output by 'PROGRAMS ARGS'.
48 DEPDIR directory where to store dependencies.
49 depfile Dependency file to output.
50 tmpdepfile Temporary file to use when outputting dependencies.
51 libtool Whether libtool is used (yes/no).
53 Report bugs to <bug-automake@gnu.org>.
58 echo "depcomp $scriptversion"
63 # A tabulation character.
65 # A newline character.
69 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
70 echo "depcomp: Variables source, object and depmode must be set" 1>&2
74 # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
75 depfile=${depfile-`echo "$object" |
76 sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
77 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
81 # Some modes work just like other modes, but use different flags. We
82 # parameterize here, but still list the modes in the big case below,
83 # to make depend.m4 easier to write. Note that we *cannot* use a case
84 # here, because this file can only contain one case statement.
85 if test "$depmode" = hp; then
86 # HP compiler uses -M and no extra arg.
91 if test "$depmode" = dashXmstdout; then
92 # This is just like dashmstdout with a different argument.
97 cygpath_u="cygpath -u -f -"
98 if test "$depmode" = msvcmsys; then
99 # This is just like msvisualcpp but w/o cygpath translation.
100 # Just convert the backslash-escaped backslashes to single forward
101 # slashes to satisfy depend.m4
102 cygpath_u='sed s,\\\\,/,g'
106 if test "$depmode" = msvc7msys; then
107 # This is just like msvc7 but w/o cygpath translation.
108 # Just convert the backslash-escaped backslashes to single forward
109 # slashes to satisfy depend.m4
110 cygpath_u='sed s,\\\\,/,g'
114 if test "$depmode" = xlc; then
115 # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations.
116 gccflag=-qmakedep=gcc,-MF
122 ## gcc 3 implements dependency tracking that does exactly what
123 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
124 ## it if -MD -MP comes after the -MF stuff. Hmm.
125 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
126 ## the command line argument order; so add the flags where they
127 ## appear in depend2.am. Note that the slowdown incurred here
128 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
132 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
133 *) set fnord "$@" "$arg" ;;
140 if test $stat -eq 0; then :
145 mv "$tmpdepfile" "$depfile"
149 ## There are various ways to get dependency output from gcc. Here's
150 ## why we pick this rather obscure method:
151 ## - Don't want to use -MD because we'd like the dependencies to end
152 ## up in a subdir. Having to rename by hand is ugly.
153 ## (We might end up doing this anyway to support other compilers.)
154 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
155 ## -MM, not -M (despite what the docs say).
156 ## - Using -M directly means running the compiler twice (even worse
158 if test -z "$gccflag"; then
161 "$@" -Wp,"$gccflag$tmpdepfile"
163 if test $stat -eq 0; then :
169 echo "$object : \\" > "$depfile"
170 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
171 ## The second -e expression handles DOS-style file names with drive letters.
172 sed -e 's/^[^:]*: / /' \
173 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
174 ## This next piece of magic avoids the "deleted header file" problem.
175 ## The problem is that when a header file which appears in a .P file
176 ## is deleted, the dependency causes make to die (because there is
177 ## typically no way to rebuild the header). We avoid this by adding
178 ## dummy dependencies for each header file. Too bad gcc doesn't do
179 ## this for us directly.
180 tr ' ' "$nl" < "$tmpdepfile" |
181 ## Some versions of gcc put a space before the ':'. On the theory
182 ## that the space means something, we add a space to the output as
183 ## well. hp depmode also adds that space, but also prefixes the VPATH
184 ## to the object. Take care to not repeat it in the output.
185 ## Some versions of the HPUX 10.20 sed can't process this invocation
186 ## correctly. Breaking it into two sed invocations is a workaround.
187 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
188 | sed -e 's/$/ :/' >> "$depfile"
193 # This case exists only to let depend.m4 do its work. It works by
194 # looking at the text of this script. This case will never be run,
195 # since it is checked for above.
200 if test "$libtool" = yes; then
201 "$@" "-Wp,-MDupdate,$tmpdepfile"
203 "$@" -MDupdate "$tmpdepfile"
206 if test $stat -eq 0; then :
213 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
214 echo "$object : \\" > "$depfile"
216 # Clip off the initial element (the dependent). Don't try to be
217 # clever and replace this with sed code, as IRIX sed won't handle
218 # lines with more than a fixed number of characters (4096 in
219 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
220 # the IRIX cc adds comments like '#:fec' to the end of the
222 tr ' ' "$nl" < "$tmpdepfile" \
223 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
224 tr "$nl" ' ' >> "$depfile"
227 # The second pass generates a dummy entry for each header file.
228 tr ' ' "$nl" < "$tmpdepfile" \
229 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
232 # The sourcefile does not contain any dependencies, so just
233 # store a dummy comment line, to avoid errors with the Makefile
234 # "include basename.Plo" scheme.
235 echo "#dummy" > "$depfile"
241 # This case exists only to let depend.m4 do its work. It works by
242 # looking at the text of this script. This case will never be run,
243 # since it is checked for above.
248 # The C for AIX Compiler uses -M and outputs the dependencies
249 # in a .u file. In older versions, this file always lives in the
250 # current directory. Also, the AIX compiler puts '$object:' at the
251 # start of each line; $object doesn't have directory information.
252 # Version 6 uses the directory in both cases.
253 dir=`echo "$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 if test "$libtool" = yes; then
257 tmpdepfile1=$dir$base.u
259 tmpdepfile3=$dir.libs/$base.u
262 tmpdepfile1=$dir$base.u
263 tmpdepfile2=$dir$base.u
264 tmpdepfile3=$dir$base.u
269 if test $stat -eq 0; then :
271 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
275 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
277 test -f "$tmpdepfile" && break
279 if test -f "$tmpdepfile"; then
280 # Each line is of the form 'foo.o: dependent.h'.
281 # Do two passes, one to just change these to
282 # '$object: dependent.h' and one to simply 'dependent.h:'.
283 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
284 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
286 # The sourcefile does not contain any dependencies, so just
287 # store a dummy comment line, to avoid errors with the Makefile
288 # "include basename.Plo" scheme.
289 echo "#dummy" > "$depfile"
295 # Intel's C compiler understands '-MD -MF file'. However on
296 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
297 # ICC 7.0 will fill foo.d with something like
300 # which is wrong. We want:
301 # sub/foo.o: sub/foo.c
302 # sub/foo.o: sub/foo.h
305 # ICC 7.1 will output
306 # foo.o: sub/foo.c sub/foo.h
307 # and will wrap long lines using \ :
308 # foo.o: sub/foo.c ... \
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 "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
325 # Some versions of the HPUX 10.20 sed can't process this invocation
326 # correctly. Breaking it into two sed invocations is a workaround.
327 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
328 sed -e 's/$/ :/' >> "$depfile"
333 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
334 # compilers, which have integrated preprocessors. The correct option
335 # to use with these is +Maked; it writes dependencies to a file named
336 # 'foo.d', which lands next to the object file, wherever that
338 # Much of this is similar to the tru64 case; see comments there.
339 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
340 test "x$dir" = "x$object" && dir=
341 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
342 if test "$libtool" = yes; then
343 tmpdepfile1=$dir$base.d
344 tmpdepfile2=$dir.libs/$base.d
347 tmpdepfile1=$dir$base.d
348 tmpdepfile2=$dir$base.d
352 if test $stat -eq 0; then :
354 rm -f "$tmpdepfile1" "$tmpdepfile2"
358 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
360 test -f "$tmpdepfile" && break
362 if test -f "$tmpdepfile"; then
363 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
364 # Add 'dependent.h:' lines.
370 }' "$tmpdepfile" >> "$depfile"
372 echo "#dummy" > "$depfile"
374 rm -f "$tmpdepfile" "$tmpdepfile2"
378 # The Tru64 compiler uses -MD to generate dependencies as a side
379 # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
380 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
381 # dependencies in 'foo.d' instead, so we check for that too.
382 # Subdirectories are respected.
383 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
384 test "x$dir" = "x$object" && dir=
385 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
387 if test "$libtool" = yes; then
388 # With Tru64 cc, shared objects can also be used to make a
389 # static library. This mechanism is used in libtool 1.4 series to
390 # handle both shared and static libraries in a single compilation.
391 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
393 # With libtool 1.5 this exception was removed, and libtool now
394 # generates 2 separate objects for the 2 libraries. These two
395 # compilations output dependencies in $dir.libs/$base.o.d and
396 # in $dir$base.o.d. We have to check for both files, because
397 # one of the two compilations can be disabled. We should prefer
398 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
399 # automatically cleaned when .libs/ is deleted, while ignoring
400 # the former would cause a distcleancheck panic.
401 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
402 tmpdepfile2=$dir$base.o.d # libtool 1.5
403 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
404 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
407 tmpdepfile1=$dir$base.o.d
408 tmpdepfile2=$dir$base.d
409 tmpdepfile3=$dir$base.d
410 tmpdepfile4=$dir$base.d
415 if test $stat -eq 0; then :
417 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
421 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
423 test -f "$tmpdepfile" && break
425 if test -f "$tmpdepfile"; then
426 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
427 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
429 echo "#dummy" > "$depfile"
435 if test "$libtool" = yes; then
436 showIncludes=-Wc,-showIncludes
438 showIncludes=-showIncludes
440 "$@" $showIncludes > "$tmpdepfile"
442 grep -v '^Note: including file: ' "$tmpdepfile"
443 if test "$stat" = 0; then :
449 echo "$object : \\" > "$depfile"
450 # The first sed program below extracts the file names and escapes
451 # backslashes for cygpath. The second sed program outputs the file
452 # name when reading, but also accumulates all include files in the
453 # hold buffer in order to output them again at the end. This only
454 # works with sed implementations that can handle large buffers.
455 sed < "$tmpdepfile" -n '
456 /^Note: including file: *\(.*\)/ {
460 }' | $cygpath_u | sort -u | sed -n '
462 s/\(.*\)/'"$tab"'\1 \\/p
474 # This case exists only to let depend.m4 do its work. It works by
475 # looking at the text of this script. This case will never be run,
476 # since it is checked for above.
481 # This comment above is used by automake to tell side-effect
482 # dependency tracking mechanisms from slower ones.
485 # Important note: in order to support this mode, a compiler *must*
486 # always write the preprocessed file to stdout, regardless of -o.
489 # Remove the call to Libtool.
490 if test "$libtool" = yes; then
491 while test "X$1" != 'X--mode=compile'; do
497 # Remove '-o $object'.
509 set fnord "$@" "$arg"
516 test -z "$dashmflag" && dashmflag=-M
517 # Require at least two characters before searching for ':'
518 # in the target name. This is to cope with DOS-style filenames:
519 # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
521 sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
523 cat < "$tmpdepfile" > "$depfile"
524 tr ' ' "$nl" < "$tmpdepfile" | \
525 ## Some versions of the HPUX 10.20 sed can't process this invocation
526 ## correctly. Breaking it into two sed invocations is a workaround.
527 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
532 # This case only exists to satisfy depend.m4. It is never actually
533 # run, as this mode is specially recognized in the preamble.
539 # Remove any Libtool call
540 if test "$libtool" = yes; then
541 while test "X$1" != 'X--mode=compile'; do
556 if test $eat = yes; then
562 set fnord "$@" "$arg"; shift ;;
563 # Strip any option that makedepend may not understand. Remove
564 # the object too, otherwise makedepend will parse it as a source file.
570 set fnord "$@" "$arg"; shift ;;
573 obj_suffix=`echo "$object" | sed 's/^.*\././'`
575 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
577 # makedepend may prepend the VPATH from the source file name to the object.
578 # No need to regex-escape $object, excess matching of '.' is harmless.
579 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
580 sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \
581 ## Some versions of the HPUX 10.20 sed can't process this invocation
582 ## correctly. Breaking it into two sed invocations is a workaround.
583 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
584 rm -f "$tmpdepfile" "$tmpdepfile".bak
588 # Important note: in order to support this mode, a compiler *must*
589 # always write the preprocessed file to stdout.
592 # Remove the call to Libtool.
593 if test "$libtool" = yes; then
594 while test "X$1" != 'X--mode=compile'; do
600 # Remove '-o $object'.
612 set fnord "$@" "$arg"
620 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
621 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
622 sed '$ s: \\$::' > "$tmpdepfile"
624 echo "$object : \\" > "$depfile"
625 cat < "$tmpdepfile" >> "$depfile"
626 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
631 # Important note: in order to support this mode, a compiler *must*
632 # always write the preprocessed file to stdout.
635 # Remove the call to Libtool.
636 if test "$libtool" = yes; then
637 while test "X$1" != 'X--mode=compile'; do
653 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
659 set fnord "$@" "$arg"
665 "$@" -E 2>/dev/null |
666 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
668 echo "$object : \\" > "$depfile"
669 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
670 echo "$tab" >> "$depfile"
671 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
676 # This case exists only to let depend.m4 do its work. It works by
677 # looking at the text of this script. This case will never be run,
678 # since it is checked for above.
687 echo "Unknown depmode $depmode" 1>&2
697 # eval: (add-hook 'write-file-hooks 'time-stamp)
698 # time-stamp-start: "scriptversion="
699 # time-stamp-format: "%:y-%02m-%02d.%02H"
700 # time-stamp-time-zone: "UTC"
701 # time-stamp-end: "; # UTC"