2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2012-02-03.15; # UTC
6 # Copyright (C) 1999-2012 Free Software Foundation, Inc.
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2, or (at your option)
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
21 # As a special exception to the GNU General Public License, if you
22 # distribute this file as part of a program that contains a
23 # configuration script generated by Autoconf, you may include it under
24 # the same distribution terms that you use for the rest of that program.
26 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
30 echo "$0: No command. Try '$0 --help' for more information." 1>&2
35 Usage: depcomp [--help] [--version] PROGRAM [ARGS]
37 Run PROGRAMS ARGS to compile a file, generating dependencies
40 Environment variables:
41 depmode Dependency tracking mode.
42 source Source file read by 'PROGRAMS ARGS'.
43 object Object file output by 'PROGRAMS ARGS'.
44 DEPDIR directory where to store dependencies.
45 depfile Dependency file to output.
46 tmpdepfile Temporary file to use when outputting dependencies.
47 libtool Whether libtool is used (yes/no).
49 Report bugs to <bug-automake@gnu.org>.
54 echo "depcomp $scriptversion"
59 # A tabulation character.
61 # A newline character.
65 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
66 echo "depcomp: Variables source, object and depmode must be set" 1>&2
70 # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
71 depfile=${depfile-`echo "$object" |
72 sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
73 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
77 # Some modes work just like other modes, but use different flags. We
78 # parameterize here, but still list the modes in the big case below,
79 # to make depend.m4 easier to write. Note that we *cannot* use a case
80 # here, because this file can only contain one case statement.
81 if test "$depmode" = hp; then
82 # HP compiler uses -M and no extra arg.
87 if test "$depmode" = dashXmstdout; then
88 # This is just like dashmstdout with a different argument.
93 cygpath_u="cygpath -u -f -"
94 if test "$depmode" = msvcmsys; then
95 # This is just like msvisualcpp but w/o cygpath translation.
96 # Just convert the backslash-escaped backslashes to single forward
97 # slashes to satisfy depend.m4
98 cygpath_u='sed s,\\\\,/,g'
102 if test "$depmode" = msvc7msys; then
103 # This is just like msvc7 but w/o cygpath translation.
104 # Just convert the backslash-escaped backslashes to single forward
105 # slashes to satisfy depend.m4
106 cygpath_u='sed s,\\\\,/,g'
112 ## gcc 3 implements dependency tracking that does exactly what
113 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
114 ## it if -MD -MP comes after the -MF stuff. Hmm.
115 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
116 ## the command line argument order; so add the flags where they
117 ## appear in depend2.am. Note that the slowdown incurred here
118 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
122 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
123 *) set fnord "$@" "$arg" ;;
130 if test $stat -eq 0; then :
135 mv "$tmpdepfile" "$depfile"
139 ## There are various ways to get dependency output from gcc. Here's
140 ## why we pick this rather obscure method:
141 ## - Don't want to use -MD because we'd like the dependencies to end
142 ## up in a subdir. Having to rename by hand is ugly.
143 ## (We might end up doing this anyway to support other compilers.)
144 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
145 ## -MM, not -M (despite what the docs say).
146 ## - Using -M directly means running the compiler twice (even worse
148 if test -z "$gccflag"; then
151 "$@" -Wp,"$gccflag$tmpdepfile"
153 if test $stat -eq 0; then :
159 echo "$object : \\" > "$depfile"
160 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
161 ## The second -e expression handles DOS-style file names with drive letters.
162 sed -e 's/^[^:]*: / /' \
163 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
164 ## This next piece of magic avoids the "deleted header file" problem.
165 ## The problem is that when a header file which appears in a .P file
166 ## is deleted, the dependency causes make to die (because there is
167 ## typically no way to rebuild the header). We avoid this by adding
168 ## dummy dependencies for each header file. Too bad gcc doesn't do
169 ## this for us directly.
170 tr ' ' "$nl" < "$tmpdepfile" |
171 ## Some versions of gcc put a space before the ':'. On the theory
172 ## that the space means something, we add a space to the output as
173 ## well. hp depmode also adds that space, but also prefixes the VPATH
174 ## to the object. Take care to not repeat it in the output.
175 ## Some versions of the HPUX 10.20 sed can't process this invocation
176 ## correctly. Breaking it into two sed invocations is a workaround.
177 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
178 | sed -e 's/$/ :/' >> "$depfile"
183 # This case exists only to let depend.m4 do its work. It works by
184 # looking at the text of this script. This case will never be run,
185 # since it is checked for above.
190 if test "$libtool" = yes; then
191 "$@" "-Wp,-MDupdate,$tmpdepfile"
193 "$@" -MDupdate "$tmpdepfile"
196 if test $stat -eq 0; then :
203 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
204 echo "$object : \\" > "$depfile"
206 # Clip off the initial element (the dependent). Don't try to be
207 # clever and replace this with sed code, as IRIX sed won't handle
208 # lines with more than a fixed number of characters (4096 in
209 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
210 # the IRIX cc adds comments like '#:fec' to the end of the
212 tr ' ' "$nl" < "$tmpdepfile" \
213 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
214 tr "$nl" ' ' >> "$depfile"
217 # The second pass generates a dummy entry for each header file.
218 tr ' ' "$nl" < "$tmpdepfile" \
219 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
222 # The sourcefile does not contain any dependencies, so just
223 # store a dummy comment line, to avoid errors with the Makefile
224 # "include basename.Plo" scheme.
225 echo "#dummy" > "$depfile"
231 # The C for AIX Compiler uses -M and outputs the dependencies
232 # in a .u file. In older versions, this file always lives in the
233 # current directory. Also, the AIX compiler puts '$object:' at the
234 # start of each line; $object doesn't have directory information.
235 # Version 6 uses the directory in both cases.
236 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
237 test "x$dir" = "x$object" && dir=
238 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
239 if test "$libtool" = yes; then
240 tmpdepfile1=$dir$base.u
242 tmpdepfile3=$dir.libs/$base.u
245 tmpdepfile1=$dir$base.u
246 tmpdepfile2=$dir$base.u
247 tmpdepfile3=$dir$base.u
252 if test $stat -eq 0; then :
254 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
258 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
260 test -f "$tmpdepfile" && break
262 if test -f "$tmpdepfile"; then
263 # Each line is of the form 'foo.o: dependent.h'.
264 # Do two passes, one to just change these to
265 # '$object: dependent.h' and one to simply 'dependent.h:'.
266 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
267 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
269 # The sourcefile does not contain any dependencies, so just
270 # store a dummy comment line, to avoid errors with the Makefile
271 # "include basename.Plo" scheme.
272 echo "#dummy" > "$depfile"
278 # Intel's C compiler understands '-MD -MF file'. However on
279 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
280 # ICC 7.0 will fill foo.d with something like
283 # which is wrong. We want:
284 # sub/foo.o: sub/foo.c
285 # sub/foo.o: sub/foo.h
288 # ICC 7.1 will output
289 # foo.o: sub/foo.c sub/foo.h
290 # and will wrap long lines using \ :
291 # foo.o: sub/foo.c ... \
295 "$@" -MD -MF "$tmpdepfile"
297 if test $stat -eq 0; then :
303 # Each line is of the form 'foo.o: dependent.h',
304 # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
305 # Do two passes, one to just change these to
306 # '$object: dependent.h' and one to simply 'dependent.h:'.
307 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
308 # Some versions of the HPUX 10.20 sed can't process this invocation
309 # correctly. Breaking it into two sed invocations is a workaround.
310 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
311 sed -e 's/$/ :/' >> "$depfile"
316 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
317 # compilers, which have integrated preprocessors. The correct option
318 # to use with these is +Maked; it writes dependencies to a file named
319 # 'foo.d', which lands next to the object file, wherever that
321 # Much of this is similar to the tru64 case; see comments there.
322 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
323 test "x$dir" = "x$object" && dir=
324 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
325 if test "$libtool" = yes; then
326 tmpdepfile1=$dir$base.d
327 tmpdepfile2=$dir.libs/$base.d
330 tmpdepfile1=$dir$base.d
331 tmpdepfile2=$dir$base.d
335 if test $stat -eq 0; then :
337 rm -f "$tmpdepfile1" "$tmpdepfile2"
341 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
343 test -f "$tmpdepfile" && break
345 if test -f "$tmpdepfile"; then
346 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
347 # Add 'dependent.h:' lines.
353 }' "$tmpdepfile" >> "$depfile"
355 echo "#dummy" > "$depfile"
357 rm -f "$tmpdepfile" "$tmpdepfile2"
361 # The Tru64 compiler uses -MD to generate dependencies as a side
362 # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
363 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
364 # dependencies in 'foo.d' instead, so we check for that too.
365 # Subdirectories are respected.
366 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
367 test "x$dir" = "x$object" && dir=
368 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
370 if test "$libtool" = yes; then
371 # With Tru64 cc, shared objects can also be used to make a
372 # static library. This mechanism is used in libtool 1.4 series to
373 # handle both shared and static libraries in a single compilation.
374 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
376 # With libtool 1.5 this exception was removed, and libtool now
377 # generates 2 separate objects for the 2 libraries. These two
378 # compilations output dependencies in $dir.libs/$base.o.d and
379 # in $dir$base.o.d. We have to check for both files, because
380 # one of the two compilations can be disabled. We should prefer
381 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
382 # automatically cleaned when .libs/ is deleted, while ignoring
383 # the former would cause a distcleancheck panic.
384 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
385 tmpdepfile2=$dir$base.o.d # libtool 1.5
386 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
387 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
390 tmpdepfile1=$dir$base.o.d
391 tmpdepfile2=$dir$base.d
392 tmpdepfile3=$dir$base.d
393 tmpdepfile4=$dir$base.d
398 if test $stat -eq 0; then :
400 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
404 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
406 test -f "$tmpdepfile" && break
408 if test -f "$tmpdepfile"; then
409 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
410 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
412 echo "#dummy" > "$depfile"
418 if test "$libtool" = yes; then
419 showIncludes=-Wc,-showIncludes
421 showIncludes=-showIncludes
423 "$@" $showIncludes > "$tmpdepfile"
425 grep -v '^Note: including file: ' "$tmpdepfile"
426 if test "$stat" = 0; then :
432 echo "$object : \\" > "$depfile"
433 # The first sed program below extracts the file names and escapes
434 # backslashes for cygpath. The second sed program outputs the file
435 # name when reading, but also accumulates all include files in the
436 # hold buffer in order to output them again at the end. This only
437 # works with sed implementations that can handle large buffers.
438 sed < "$tmpdepfile" -n '
439 /^Note: including file: *\(.*\)/ {
443 }' | $cygpath_u | sort -u | sed -n '
445 s/\(.*\)/'"$tab"'\1 \\/p
457 # This case exists only to let depend.m4 do its work. It works by
458 # looking at the text of this script. This case will never be run,
459 # since it is checked for above.
464 # This comment above is used by automake to tell side-effect
465 # dependency tracking mechanisms from slower ones.
468 # Important note: in order to support this mode, a compiler *must*
469 # always write the preprocessed file to stdout, regardless of -o.
472 # Remove the call to Libtool.
473 if test "$libtool" = yes; then
474 while test "X$1" != 'X--mode=compile'; do
480 # Remove '-o $object'.
492 set fnord "$@" "$arg"
499 test -z "$dashmflag" && dashmflag=-M
500 # Require at least two characters before searching for ':'
501 # in the target name. This is to cope with DOS-style filenames:
502 # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
504 sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
506 cat < "$tmpdepfile" > "$depfile"
507 tr ' ' "$nl" < "$tmpdepfile" | \
508 ## Some versions of the HPUX 10.20 sed can't process this invocation
509 ## correctly. Breaking it into two sed invocations is a workaround.
510 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
515 # This case only exists to satisfy depend.m4. It is never actually
516 # run, as this mode is specially recognized in the preamble.
522 # Remove any Libtool call
523 if test "$libtool" = yes; then
524 while test "X$1" != 'X--mode=compile'; do
539 if test $eat = yes; then
545 set fnord "$@" "$arg"; shift ;;
546 # Strip any option that makedepend may not understand. Remove
547 # the object too, otherwise makedepend will parse it as a source file.
553 set fnord "$@" "$arg"; shift ;;
556 obj_suffix=`echo "$object" | sed 's/^.*\././'`
558 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
560 # makedepend may prepend the VPATH from the source file name to the object.
561 # No need to regex-escape $object, excess matching of '.' is harmless.
562 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
563 sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \
564 ## Some versions of the HPUX 10.20 sed can't process this invocation
565 ## correctly. Breaking it into two sed invocations is a workaround.
566 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
567 rm -f "$tmpdepfile" "$tmpdepfile".bak
571 # Important note: in order to support this mode, a compiler *must*
572 # always write the preprocessed file to stdout.
575 # Remove the call to Libtool.
576 if test "$libtool" = yes; then
577 while test "X$1" != 'X--mode=compile'; do
583 # Remove '-o $object'.
595 set fnord "$@" "$arg"
603 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
604 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
605 sed '$ s: \\$::' > "$tmpdepfile"
607 echo "$object : \\" > "$depfile"
608 cat < "$tmpdepfile" >> "$depfile"
609 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
614 # Important note: in order to support this mode, a compiler *must*
615 # always write the preprocessed file to stdout.
618 # Remove the call to Libtool.
619 if test "$libtool" = yes; then
620 while test "X$1" != 'X--mode=compile'; do
636 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
642 set fnord "$@" "$arg"
648 "$@" -E 2>/dev/null |
649 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
651 echo "$object : \\" > "$depfile"
652 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
653 echo "$tab" >> "$depfile"
654 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
659 # This case exists only to let depend.m4 do its work. It works by
660 # looking at the text of this script. This case will never be run,
661 # since it is checked for above.
670 echo "Unknown depmode $depmode" 1>&2
680 # eval: (add-hook 'write-file-hooks 'time-stamp)
681 # time-stamp-start: "scriptversion="
682 # time-stamp-format: "%:y-%02m-%02d.%02H"
683 # time-stamp-time-zone: "UTC"
684 # time-stamp-end: "; # UTC"