2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2012-03-12.15; # 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 "$depmode" = msvc7msys; then
103 # This is just like msvc7 but w/o cygpath translation.
104 # Just convert the backslash-escaped backslashes to single forward
105 # slashes to satisfy depend.m4
106 cygpath_u='sed s,\\\\,/,g'
110 if test "$depmode" = xlc; then
111 # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations.
112 gccflag=-qmakedep=gcc,-MF
118 ## gcc 3 implements dependency tracking that does exactly what
119 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
120 ## it if -MD -MP comes after the -MF stuff. Hmm.
121 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
122 ## the command line argument order; so add the flags where they
123 ## appear in depend2.am. Note that the slowdown incurred here
124 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
128 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
129 *) set fnord "$@" "$arg" ;;
136 if test $stat -eq 0; then :
141 mv "$tmpdepfile" "$depfile"
145 ## There are various ways to get dependency output from gcc. Here's
146 ## why we pick this rather obscure method:
147 ## - Don't want to use -MD because we'd like the dependencies to end
148 ## up in a subdir. Having to rename by hand is ugly.
149 ## (We might end up doing this anyway to support other compilers.)
150 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
151 ## -MM, not -M (despite what the docs say).
152 ## - Using -M directly means running the compiler twice (even worse
154 if test -z "$gccflag"; then
157 "$@" -Wp,"$gccflag$tmpdepfile"
159 if test $stat -eq 0; then :
165 echo "$object : \\" > "$depfile"
166 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
167 ## The second -e expression handles DOS-style file names with drive letters.
168 sed -e 's/^[^:]*: / /' \
169 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
170 ## This next piece of magic avoids the "deleted header file" problem.
171 ## The problem is that when a header file which appears in a .P file
172 ## is deleted, the dependency causes make to die (because there is
173 ## typically no way to rebuild the header). We avoid this by adding
174 ## dummy dependencies for each header file. Too bad gcc doesn't do
175 ## this for us directly.
176 tr ' ' "$nl" < "$tmpdepfile" |
177 ## Some versions of gcc put a space before the ':'. On the theory
178 ## that the space means something, we add a space to the output as
179 ## well. hp depmode also adds that space, but also prefixes the VPATH
180 ## to the object. Take care to not repeat it in the output.
181 ## Some versions of the HPUX 10.20 sed can't process this invocation
182 ## correctly. Breaking it into two sed invocations is a workaround.
183 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
184 | sed -e 's/$/ :/' >> "$depfile"
189 # This case exists only to let depend.m4 do its work. It works by
190 # looking at the text of this script. This case will never be run,
191 # since it is checked for above.
196 if test "$libtool" = yes; then
197 "$@" "-Wp,-MDupdate,$tmpdepfile"
199 "$@" -MDupdate "$tmpdepfile"
202 if test $stat -eq 0; then :
209 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
210 echo "$object : \\" > "$depfile"
212 # Clip off the initial element (the dependent). Don't try to be
213 # clever and replace this with sed code, as IRIX sed won't handle
214 # lines with more than a fixed number of characters (4096 in
215 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
216 # the IRIX cc adds comments like '#:fec' to the end of the
218 tr ' ' "$nl" < "$tmpdepfile" \
219 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
220 tr "$nl" ' ' >> "$depfile"
223 # The second pass generates a dummy entry for each header file.
224 tr ' ' "$nl" < "$tmpdepfile" \
225 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
228 # The sourcefile does not contain any dependencies, so just
229 # store a dummy comment line, to avoid errors with the Makefile
230 # "include basename.Plo" scheme.
231 echo "#dummy" > "$depfile"
237 # This case exists only to let depend.m4 do its work. It works by
238 # looking at the text of this script. This case will never be run,
239 # since it is checked for above.
244 # The C for AIX Compiler uses -M and outputs the dependencies
245 # in a .u file. In older versions, this file always lives in the
246 # current directory. Also, the AIX compiler puts '$object:' at the
247 # start of each line; $object doesn't have directory information.
248 # Version 6 uses the directory in both cases.
249 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
250 test "x$dir" = "x$object" && dir=
251 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
252 if test "$libtool" = yes; then
253 tmpdepfile1=$dir$base.u
255 tmpdepfile3=$dir.libs/$base.u
258 tmpdepfile1=$dir$base.u
259 tmpdepfile2=$dir$base.u
260 tmpdepfile3=$dir$base.u
265 if test $stat -eq 0; then :
267 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
271 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
273 test -f "$tmpdepfile" && break
275 if test -f "$tmpdepfile"; then
276 # Each line is of the form 'foo.o: dependent.h'.
277 # Do two passes, one to just change these to
278 # '$object: dependent.h' and one to simply 'dependent.h:'.
279 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
280 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
282 # The sourcefile does not contain any dependencies, so just
283 # store a dummy comment line, to avoid errors with the Makefile
284 # "include basename.Plo" scheme.
285 echo "#dummy" > "$depfile"
291 # Intel's C compiler understands '-MD -MF file'. However on
292 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
293 # ICC 7.0 will fill foo.d with something like
296 # which is wrong. We want:
297 # sub/foo.o: sub/foo.c
298 # sub/foo.o: sub/foo.h
301 # ICC 7.1 will output
302 # foo.o: sub/foo.c sub/foo.h
303 # and will wrap long lines using \ :
304 # foo.o: sub/foo.c ... \
308 "$@" -MD -MF "$tmpdepfile"
310 if test $stat -eq 0; then :
316 # Each line is of the form 'foo.o: dependent.h',
317 # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
318 # Do two passes, one to just change these to
319 # '$object: dependent.h' and one to simply 'dependent.h:'.
320 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
321 # Some versions of the HPUX 10.20 sed can't process this invocation
322 # correctly. Breaking it into two sed invocations is a workaround.
323 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
324 sed -e 's/$/ :/' >> "$depfile"
329 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
330 # compilers, which have integrated preprocessors. The correct option
331 # to use with these is +Maked; it writes dependencies to a file named
332 # 'foo.d', which lands next to the object file, wherever that
334 # Much of this is similar to the tru64 case; see comments there.
335 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
336 test "x$dir" = "x$object" && dir=
337 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
338 if test "$libtool" = yes; then
339 tmpdepfile1=$dir$base.d
340 tmpdepfile2=$dir.libs/$base.d
343 tmpdepfile1=$dir$base.d
344 tmpdepfile2=$dir$base.d
348 if test $stat -eq 0; then :
350 rm -f "$tmpdepfile1" "$tmpdepfile2"
354 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
356 test -f "$tmpdepfile" && break
358 if test -f "$tmpdepfile"; then
359 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
360 # Add 'dependent.h:' lines.
366 }' "$tmpdepfile" >> "$depfile"
368 echo "#dummy" > "$depfile"
370 rm -f "$tmpdepfile" "$tmpdepfile2"
374 # The Tru64 compiler uses -MD to generate dependencies as a side
375 # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
376 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
377 # dependencies in 'foo.d' instead, so we check for that too.
378 # Subdirectories are respected.
379 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
380 test "x$dir" = "x$object" && dir=
381 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
383 if test "$libtool" = yes; then
384 # With Tru64 cc, shared objects can also be used to make a
385 # static library. This mechanism is used in libtool 1.4 series to
386 # handle both shared and static libraries in a single compilation.
387 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
389 # With libtool 1.5 this exception was removed, and libtool now
390 # generates 2 separate objects for the 2 libraries. These two
391 # compilations output dependencies in $dir.libs/$base.o.d and
392 # in $dir$base.o.d. We have to check for both files, because
393 # one of the two compilations can be disabled. We should prefer
394 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
395 # automatically cleaned when .libs/ is deleted, while ignoring
396 # the former would cause a distcleancheck panic.
397 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
398 tmpdepfile2=$dir$base.o.d # libtool 1.5
399 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
400 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
403 tmpdepfile1=$dir$base.o.d
404 tmpdepfile2=$dir$base.d
405 tmpdepfile3=$dir$base.d
406 tmpdepfile4=$dir$base.d
411 if test $stat -eq 0; then :
413 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
417 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
419 test -f "$tmpdepfile" && break
421 if test -f "$tmpdepfile"; then
422 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
423 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
425 echo "#dummy" > "$depfile"
431 if test "$libtool" = yes; then
432 showIncludes=-Wc,-showIncludes
434 showIncludes=-showIncludes
436 "$@" $showIncludes > "$tmpdepfile"
438 grep -v '^Note: including file: ' "$tmpdepfile"
439 if test "$stat" = 0; then :
445 echo "$object : \\" > "$depfile"
446 # The first sed program below extracts the file names and escapes
447 # backslashes for cygpath. The second sed program outputs the file
448 # name when reading, but also accumulates all include files in the
449 # hold buffer in order to output them again at the end. This only
450 # works with sed implementations that can handle large buffers.
451 sed < "$tmpdepfile" -n '
452 /^Note: including file: *\(.*\)/ {
456 }' | $cygpath_u | sort -u | sed -n '
458 s/\(.*\)/'"$tab"'\1 \\/p
470 # This case exists only to let depend.m4 do its work. It works by
471 # looking at the text of this script. This case will never be run,
472 # since it is checked for above.
477 # This comment above is used by automake to tell side-effect
478 # dependency tracking mechanisms from slower ones.
481 # Important note: in order to support this mode, a compiler *must*
482 # always write the preprocessed file to stdout, regardless of -o.
485 # Remove the call to Libtool.
486 if test "$libtool" = yes; then
487 while test "X$1" != 'X--mode=compile'; do
493 # Remove '-o $object'.
505 set fnord "$@" "$arg"
512 test -z "$dashmflag" && dashmflag=-M
513 # Require at least two characters before searching for ':'
514 # in the target name. This is to cope with DOS-style filenames:
515 # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
517 sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
519 cat < "$tmpdepfile" > "$depfile"
520 tr ' ' "$nl" < "$tmpdepfile" | \
521 ## Some versions of the HPUX 10.20 sed can't process this invocation
522 ## correctly. Breaking it into two sed invocations is a workaround.
523 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
528 # This case only exists to satisfy depend.m4. It is never actually
529 # run, as this mode is specially recognized in the preamble.
535 # Remove any Libtool call
536 if test "$libtool" = yes; then
537 while test "X$1" != 'X--mode=compile'; do
552 if test $eat = yes; then
558 set fnord "$@" "$arg"; shift ;;
559 # Strip any option that makedepend may not understand. Remove
560 # the object too, otherwise makedepend will parse it as a source file.
566 set fnord "$@" "$arg"; shift ;;
569 obj_suffix=`echo "$object" | sed 's/^.*\././'`
571 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
573 # makedepend may prepend the VPATH from the source file name to the object.
574 # No need to regex-escape $object, excess matching of '.' is harmless.
575 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
576 sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \
577 ## Some versions of the HPUX 10.20 sed can't process this invocation
578 ## correctly. Breaking it into two sed invocations is a workaround.
579 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
580 rm -f "$tmpdepfile" "$tmpdepfile".bak
584 # Important note: in order to support this mode, a compiler *must*
585 # always write the preprocessed file to stdout.
588 # Remove the call to Libtool.
589 if test "$libtool" = yes; then
590 while test "X$1" != 'X--mode=compile'; do
596 # Remove '-o $object'.
608 set fnord "$@" "$arg"
616 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
617 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
618 sed '$ s: \\$::' > "$tmpdepfile"
620 echo "$object : \\" > "$depfile"
621 cat < "$tmpdepfile" >> "$depfile"
622 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
627 # Important note: in order to support this mode, a compiler *must*
628 # always write the preprocessed file to stdout.
631 # Remove the call to Libtool.
632 if test "$libtool" = yes; then
633 while test "X$1" != 'X--mode=compile'; do
649 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
655 set fnord "$@" "$arg"
661 "$@" -E 2>/dev/null |
662 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
664 echo "$object : \\" > "$depfile"
665 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
666 echo "$tab" >> "$depfile"
667 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
672 # This case exists only to let depend.m4 do its work. It works by
673 # looking at the text of this script. This case will never be run,
674 # since it is checked for above.
683 echo "Unknown depmode $depmode" 1>&2
693 # eval: (add-hook 'write-file-hooks 'time-stamp)
694 # time-stamp-start: "scriptversion="
695 # time-stamp-format: "%:y-%02m-%02d.%02H"
696 # time-stamp-time-zone: "UTC"
697 # time-stamp-end: "; # UTC"