2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2010-10-07.20; # UTC
6 # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010
7 # 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 outputing dependencies.
48 libtool Whether libtool is used (yes/no).
50 Report bugs to <bug-automake@gnu.org>.
55 echo "depcomp $scriptversion"
60 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
61 echo "depcomp: Variables source, object and depmode must be set" 1>&2
65 # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
66 depfile=${depfile-`echo "$object" |
67 sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
68 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
72 # Some modes work just like other modes, but use different flags. We
73 # parameterize here, but still list the modes in the big case below,
74 # to make depend.m4 easier to write. Note that we *cannot* use a case
75 # here, because this file can only contain one case statement.
76 if test "$depmode" = hp; then
77 # HP compiler uses -M and no extra arg.
82 if test "$depmode" = dashXmstdout; then
83 # This is just like dashmstdout with a different argument.
88 cygpath_u="cygpath -u -f -"
89 if test "$depmode" = msvcmsys; then
90 # This is just like msvisualcpp but w/o cygpath translation.
91 # Just convert the backslash-escaped backslashes to single forward
92 # slashes to satisfy depend.m4
93 cygpath_u='sed s,\\\\,/,g'
97 if test "$depmode" = msvc7msys; then
98 # This is just like msvc7 but w/o cygpath translation.
99 # Just convert the backslash-escaped backslashes to single forward
100 # slashes to satisfy depend.m4
101 cygpath_u='sed s,\\\\,/,g'
107 ## gcc 3 implements dependency tracking that does exactly what
108 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
109 ## it if -MD -MP comes after the -MF stuff. Hmm.
110 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
111 ## the command line argument order; so add the flags where they
112 ## appear in depend2.am. Note that the slowdown incurred here
113 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
117 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
118 *) set fnord "$@" "$arg" ;;
125 if test $stat -eq 0; then :
130 mv "$tmpdepfile" "$depfile"
134 ## There are various ways to get dependency output from gcc. Here's
135 ## why we pick this rather obscure method:
136 ## - Don't want to use -MD because we'd like the dependencies to end
137 ## up in a subdir. Having to rename by hand is ugly.
138 ## (We might end up doing this anyway to support other compilers.)
139 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
140 ## -MM, not -M (despite what the docs say).
141 ## - Using -M directly means running the compiler twice (even worse
143 if test -z "$gccflag"; then
146 "$@" -Wp,"$gccflag$tmpdepfile"
148 if test $stat -eq 0; then :
154 echo "$object : \\" > "$depfile"
155 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
156 ## The second -e expression handles DOS-style file names with drive letters.
157 sed -e 's/^[^:]*: / /' \
158 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
159 ## This next piece of magic avoids the `deleted header file' problem.
160 ## The problem is that when a header file which appears in a .P file
161 ## is deleted, the dependency causes make to die (because there is
162 ## typically no way to rebuild the header). We avoid this by adding
163 ## dummy dependencies for each header file. Too bad gcc doesn't do
164 ## this for us directly.
167 ## Some versions of gcc put a space before the `:'. On the theory
168 ## that the space means something, we add a space to the output as
170 ## Some versions of the HPUX 10.20 sed can't process this invocation
171 ## correctly. Breaking it into two sed invocations is a workaround.
172 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
177 # This case exists only to let depend.m4 do its work. It works by
178 # looking at the text of this script. This case will never be run,
179 # since it is checked for above.
184 if test "$libtool" = yes; then
185 "$@" "-Wp,-MDupdate,$tmpdepfile"
187 "$@" -MDupdate "$tmpdepfile"
190 if test $stat -eq 0; then :
197 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
198 echo "$object : \\" > "$depfile"
200 # Clip off the initial element (the dependent). Don't try to be
201 # clever and replace this with sed code, as IRIX sed won't handle
202 # lines with more than a fixed number of characters (4096 in
203 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
204 # the IRIX cc adds comments like `#:fec' to the end of the
208 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
213 # The second pass generates a dummy entry for each header file.
216 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
219 # The sourcefile does not contain any dependencies, so just
220 # store a dummy comment line, to avoid errors with the Makefile
221 # "include basename.Plo" scheme.
222 echo "#dummy" > "$depfile"
228 # The C for AIX Compiler uses -M and outputs the dependencies
229 # in a .u file. In older versions, this file always lives in the
230 # current directory. Also, the AIX compiler puts `$object:' at the
231 # start of each line; $object doesn't have directory information.
232 # Version 6 uses the directory in both cases.
233 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
234 test "x$dir" = "x$object" && dir=
235 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
236 if test "$libtool" = yes; then
237 tmpdepfile1=$dir$base.u
239 tmpdepfile3=$dir.libs/$base.u
242 tmpdepfile1=$dir$base.u
243 tmpdepfile2=$dir$base.u
244 tmpdepfile3=$dir$base.u
249 if test $stat -eq 0; then :
251 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
255 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
257 test -f "$tmpdepfile" && break
259 if test -f "$tmpdepfile"; then
260 # Each line is of the form `foo.o: dependent.h'.
261 # Do two passes, one to just change these to
262 # `$object: dependent.h' and one to simply `dependent.h:'.
263 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
264 # That's a tab and a space in the [].
265 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
267 # The sourcefile does not contain any dependencies, so just
268 # store a dummy comment line, to avoid errors with the Makefile
269 # "include basename.Plo" scheme.
270 echo "#dummy" > "$depfile"
276 # Intel's C compiler understands `-MD -MF file'. However on
277 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
278 # ICC 7.0 will fill foo.d with something like
281 # which is wrong. We want:
282 # sub/foo.o: sub/foo.c
283 # sub/foo.o: sub/foo.h
286 # ICC 7.1 will output
287 # foo.o: sub/foo.c sub/foo.h
288 # and will wrap long lines using \ :
289 # foo.o: sub/foo.c ... \
293 "$@" -MD -MF "$tmpdepfile"
295 if test $stat -eq 0; then :
301 # Each line is of the form `foo.o: dependent.h',
302 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
303 # Do two passes, one to just change these to
304 # `$object: dependent.h' and one to simply `dependent.h:'.
305 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
306 # Some versions of the HPUX 10.20 sed can't process this invocation
307 # correctly. Breaking it into two sed invocations is a workaround.
308 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
309 sed -e 's/$/ :/' >> "$depfile"
314 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
315 # compilers, which have integrated preprocessors. The correct option
316 # to use with these is +Maked; it writes dependencies to a file named
317 # 'foo.d', which lands next to the object file, wherever that
319 # Much of this is similar to the tru64 case; see comments there.
320 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
321 test "x$dir" = "x$object" && dir=
322 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
323 if test "$libtool" = yes; then
324 tmpdepfile1=$dir$base.d
325 tmpdepfile2=$dir.libs/$base.d
328 tmpdepfile1=$dir$base.d
329 tmpdepfile2=$dir$base.d
333 if test $stat -eq 0; then :
335 rm -f "$tmpdepfile1" "$tmpdepfile2"
339 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
341 test -f "$tmpdepfile" && break
343 if test -f "$tmpdepfile"; then
344 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
345 # Add `dependent.h:' lines.
351 }' "$tmpdepfile" >> "$depfile"
353 echo "#dummy" > "$depfile"
355 rm -f "$tmpdepfile" "$tmpdepfile2"
359 # The Tru64 compiler uses -MD to generate dependencies as a side
360 # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
361 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
362 # dependencies in `foo.d' instead, so we check for that too.
363 # Subdirectories are respected.
364 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
365 test "x$dir" = "x$object" && dir=
366 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
368 if test "$libtool" = yes; then
369 # With Tru64 cc, shared objects can also be used to make a
370 # static library. This mechanism is used in libtool 1.4 series to
371 # handle both shared and static libraries in a single compilation.
372 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
374 # With libtool 1.5 this exception was removed, and libtool now
375 # generates 2 separate objects for the 2 libraries. These two
376 # compilations output dependencies in $dir.libs/$base.o.d and
377 # in $dir$base.o.d. We have to check for both files, because
378 # one of the two compilations can be disabled. We should prefer
379 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
380 # automatically cleaned when .libs/ is deleted, while ignoring
381 # the former would cause a distcleancheck panic.
382 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
383 tmpdepfile2=$dir$base.o.d # libtool 1.5
384 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
385 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
388 tmpdepfile1=$dir$base.o.d
389 tmpdepfile2=$dir$base.d
390 tmpdepfile3=$dir$base.d
391 tmpdepfile4=$dir$base.d
396 if test $stat -eq 0; then :
398 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
402 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
404 test -f "$tmpdepfile" && break
406 if test -f "$tmpdepfile"; then
407 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
408 # That's a tab and a space in the [].
409 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
411 echo "#dummy" > "$depfile"
417 if test "$libtool" = yes; then
418 showIncludes=-Wc,-showIncludes
420 showIncludes=-showIncludes
422 "$@" $showIncludes > "$tmpdepfile"
424 grep -v '^Note: including file: ' "$tmpdepfile"
425 if test "$stat" = 0; then :
431 echo "$object : \\" > "$depfile"
432 # The first sed program below extracts the file names and escapes
433 # backslashes for cygpath. The second sed program outputs the file
434 # name when reading, but also accumulates all include files in the
435 # hold buffer in order to output them again at the end. This only
436 # works with sed implementations that can handle large buffers.
437 sed < "$tmpdepfile" -n '
438 /^Note: including file: *\(.*\)/ {
442 }' | $cygpath_u | sort -u | sed -n '
456 # This case exists only to let depend.m4 do its work. It works by
457 # looking at the text of this script. This case will never be run,
458 # since it is checked for above.
463 # This comment above is used by automake to tell side-effect
464 # dependency tracking mechanisms from slower ones.
467 # Important note: in order to support this mode, a compiler *must*
468 # always write the preprocessed file to stdout, regardless of -o.
471 # Remove the call to Libtool.
472 if test "$libtool" = yes; then
473 while test "X$1" != 'X--mode=compile'; do
479 # Remove `-o $object'.
491 set fnord "$@" "$arg"
498 test -z "$dashmflag" && dashmflag=-M
499 # Require at least two characters before searching for `:'
500 # in the target name. This is to cope with DOS-style filenames:
501 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
503 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
505 cat < "$tmpdepfile" > "$depfile"
507 ' < "$tmpdepfile" | \
508 ## Some versions of the HPUX 10.20 sed can't process this invocation
509 ## correctly. Breaking it into two sed invocations is a workaround.
510 sed -e 's/^\\$//' -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 cat < "$tmpdepfile" > "$depfile"
561 sed '1,2d' "$tmpdepfile" | tr ' ' '
563 ## Some versions of the HPUX 10.20 sed can't process this invocation
564 ## correctly. Breaking it into two sed invocations is a workaround.
565 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
566 rm -f "$tmpdepfile" "$tmpdepfile".bak
570 # Important note: in order to support this mode, a compiler *must*
571 # always write the preprocessed file to stdout.
574 # Remove the call to Libtool.
575 if test "$libtool" = yes; then
576 while test "X$1" != 'X--mode=compile'; do
582 # Remove `-o $object'.
594 set fnord "$@" "$arg"
602 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
603 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
604 sed '$ s: \\$::' > "$tmpdepfile"
606 echo "$object : \\" > "$depfile"
607 cat < "$tmpdepfile" >> "$depfile"
608 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
613 # Important note: in order to support this mode, a compiler *must*
614 # always write the preprocessed file to stdout.
617 # Remove the call to Libtool.
618 if test "$libtool" = yes; then
619 while test "X$1" != 'X--mode=compile'; do
635 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
641 set fnord "$@" "$arg"
647 "$@" -E 2>/dev/null |
648 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
650 echo "$object : \\" > "$depfile"
651 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
652 echo " " >> "$depfile"
653 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
658 # This case exists only to let depend.m4 do its work. It works by
659 # looking at the text of this script. This case will never be run,
660 # since it is checked for above.
669 echo "Unknown depmode $depmode" 1>&2
679 # eval: (add-hook 'write-file-hooks 'time-stamp)
680 # time-stamp-start: "scriptversion="
681 # time-stamp-format: "%:y-%02m-%02d.%02H"
682 # time-stamp-time-zone: "UTC"
683 # time-stamp-end: "; # UTC"