2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2011-12-04.11; # UTC
6 # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
7 # 2011 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 $scriptversion"
60 if test -z "$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
169 ## well. hp depmode also adds that space, but also prefixes the VPATH
170 ## to the object. Take care to not repeat it in the output.
171 ## Some versions of the HPUX 10.20 sed can't process this invocation
172 ## correctly. Breaking it into two sed invocations is a workaround.
173 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
174 | sed -e 's/$/ :/' >> "$depfile"
179 # This case exists only to let depend.m4 do its work. It works by
180 # looking at the text of this script. This case will never be run,
181 # since it is checked for above.
186 if test "$libtool" = yes; then
187 "$@" "-Wp,-MDupdate,$tmpdepfile"
189 "$@" -MDupdate "$tmpdepfile"
192 if test $stat -eq 0; then :
199 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
200 echo "$object : \\" > "$depfile"
202 # Clip off the initial element (the dependent). Don't try to be
203 # clever and replace this with sed code, as IRIX sed won't handle
204 # lines with more than a fixed number of characters (4096 in
205 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
206 # the IRIX cc adds comments like '#:fec' to the end of the
210 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
215 # The second pass generates a dummy entry for each header file.
218 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
221 # The sourcefile does not contain any dependencies, so just
222 # store a dummy comment line, to avoid errors with the Makefile
223 # "include basename.Plo" scheme.
224 echo "#dummy" > "$depfile"
230 # The C for AIX Compiler uses -M and outputs the dependencies
231 # in a .u file. In older versions, this file always lives in the
232 # current directory. Also, the AIX compiler puts '$object:' at the
233 # start of each line; $object doesn't have directory information.
234 # Version 6 uses the directory in both cases.
235 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
236 test "x$dir" = "x$object" && dir=
237 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
238 if test "$libtool" = yes; then
239 tmpdepfile1=$dir$base.u
241 tmpdepfile3=$dir.libs/$base.u
244 tmpdepfile1=$dir$base.u
245 tmpdepfile2=$dir$base.u
246 tmpdepfile3=$dir$base.u
251 if test $stat -eq 0; then :
253 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
257 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
259 test -f "$tmpdepfile" && break
261 if test -f "$tmpdepfile"; then
262 # Each line is of the form 'foo.o: dependent.h'.
263 # Do two passes, one to just change these to
264 # '$object: dependent.h' and one to simply 'dependent.h:'.
265 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
266 # That's a tab and a space in the [].
267 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$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 # That's a tab and a space in the [].
411 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
413 echo "#dummy" > "$depfile"
419 if test "$libtool" = yes; then
420 showIncludes=-Wc,-showIncludes
422 showIncludes=-showIncludes
424 "$@" $showIncludes > "$tmpdepfile"
426 grep -v '^Note: including file: ' "$tmpdepfile"
427 if test "$stat" = 0; then :
433 echo "$object : \\" > "$depfile"
434 # The first sed program below extracts the file names and escapes
435 # backslashes for cygpath. The second sed program outputs the file
436 # name when reading, but also accumulates all include files in the
437 # hold buffer in order to output them again at the end. This only
438 # works with sed implementations that can handle large buffers.
439 sed < "$tmpdepfile" -n '
440 /^Note: including file: *\(.*\)/ {
444 }' | $cygpath_u | sort -u | sed -n '
458 # This case exists only to let depend.m4 do its work. It works by
459 # looking at the text of this script. This case will never be run,
460 # since it is checked for above.
465 # This comment above is used by automake to tell side-effect
466 # dependency tracking mechanisms from slower ones.
469 # Important note: in order to support this mode, a compiler *must*
470 # always write the preprocessed file to stdout, regardless of -o.
473 # Remove the call to Libtool.
474 if test "$libtool" = yes; then
475 while test "X$1" != 'X--mode=compile'; do
481 # Remove '-o $object'.
493 set fnord "$@" "$arg"
500 test -z "$dashmflag" && dashmflag=-M
501 # Require at least two characters before searching for ':'
502 # in the target name. This is to cope with DOS-style filenames:
503 # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
505 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
507 cat < "$tmpdepfile" > "$depfile"
509 ' < "$tmpdepfile" | \
510 ## Some versions of the HPUX 10.20 sed can't process this invocation
511 ## correctly. Breaking it into two sed invocations is a workaround.
512 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
517 # This case only exists to satisfy depend.m4. It is never actually
518 # run, as this mode is specially recognized in the preamble.
524 # Remove any Libtool call
525 if test "$libtool" = yes; then
526 while test "X$1" != 'X--mode=compile'; do
541 if test $eat = yes; then
547 set fnord "$@" "$arg"; shift ;;
548 # Strip any option that makedepend may not understand. Remove
549 # the object too, otherwise makedepend will parse it as a source file.
555 set fnord "$@" "$arg"; shift ;;
558 obj_suffix=`echo "$object" | sed 's/^.*\././'`
560 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
562 # makedepend may prepend the VPATH from the source file name to the object.
563 # No need to regex-escape $object, excess matching of '.' is harmless.
564 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
565 sed '1,2d' "$tmpdepfile" | tr ' ' '
567 ## Some versions of the HPUX 10.20 sed can't process this invocation
568 ## correctly. Breaking it into two sed invocations is a workaround.
569 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
570 rm -f "$tmpdepfile" "$tmpdepfile".bak
574 # Important note: in order to support this mode, a compiler *must*
575 # always write the preprocessed file to stdout.
578 # Remove the call to Libtool.
579 if test "$libtool" = yes; then
580 while test "X$1" != 'X--mode=compile'; do
586 # Remove '-o $object'.
598 set fnord "$@" "$arg"
606 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
607 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
608 sed '$ s: \\$::' > "$tmpdepfile"
610 echo "$object : \\" > "$depfile"
611 cat < "$tmpdepfile" >> "$depfile"
612 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
617 # Important note: in order to support this mode, a compiler *must*
618 # always write the preprocessed file to stdout.
621 # Remove the call to Libtool.
622 if test "$libtool" = yes; then
623 while test "X$1" != 'X--mode=compile'; do
639 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
645 set fnord "$@" "$arg"
651 "$@" -E 2>/dev/null |
652 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
654 echo "$object : \\" > "$depfile"
655 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
656 echo " " >> "$depfile"
657 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
662 # This case exists only to let depend.m4 do its work. It works by
663 # looking at the text of this script. This case will never be run,
664 # since it is checked for above.
673 echo "Unknown depmode $depmode" 1>&2
683 # eval: (add-hook 'write-file-hooks 'time-stamp)
684 # time-stamp-start: "scriptversion="
685 # time-stamp-format: "%:y-%02m-%02d.%02H"
686 # time-stamp-time-zone: "UTC"
687 # time-stamp-end: "; # UTC"