2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2009-04-28.21; # UTC
6 # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
7 # 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"
99 ## gcc 3 implements dependency tracking that does exactly what
100 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
101 ## it if -MD -MP comes after the -MF stuff. Hmm.
102 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
103 ## the command line argument order; so add the flags where they
104 ## appear in depend2.am. Note that the slowdown incurred here
105 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
109 -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
110 *) set fnord "$@" "$arg" ;;
117 if test $stat -eq 0; then :
122 mv "$tmpdepfile" "$depfile"
126 ## There are various ways to get dependency output from gcc. Here's
127 ## why we pick this rather obscure method:
128 ## - Don't want to use -MD because we'd like the dependencies to end
129 ## up in a subdir. Having to rename by hand is ugly.
130 ## (We might end up doing this anyway to support other compilers.)
131 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
132 ## -MM, not -M (despite what the docs say).
133 ## - Using -M directly means running the compiler twice (even worse
135 if test -z "$gccflag"; then
138 "$@" -Wp,"$gccflag$tmpdepfile"
140 if test $stat -eq 0; then :
146 echo "$object : \\" > "$depfile"
147 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
148 ## The second -e expression handles DOS-style file names with drive letters.
149 sed -e 's/^[^:]*: / /' \
150 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
151 ## This next piece of magic avoids the `deleted header file' problem.
152 ## The problem is that when a header file which appears in a .P file
153 ## is deleted, the dependency causes make to die (because there is
154 ## typically no way to rebuild the header). We avoid this by adding
155 ## dummy dependencies for each header file. Too bad gcc doesn't do
156 ## this for us directly.
159 ## Some versions of gcc put a space before the `:'. On the theory
160 ## that the space means something, we add a space to the output as
162 ## Some versions of the HPUX 10.20 sed can't process this invocation
163 ## correctly. Breaking it into two sed invocations is a workaround.
164 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
169 # This case exists only to let depend.m4 do its work. It works by
170 # looking at the text of this script. This case will never be run,
171 # since it is checked for above.
176 if test "$libtool" = yes; then
177 "$@" "-Wp,-MDupdate,$tmpdepfile"
179 "$@" -MDupdate "$tmpdepfile"
182 if test $stat -eq 0; then :
189 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
190 echo "$object : \\" > "$depfile"
192 # Clip off the initial element (the dependent). Don't try to be
193 # clever and replace this with sed code, as IRIX sed won't handle
194 # lines with more than a fixed number of characters (4096 in
195 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
196 # the IRIX cc adds comments like `#:fec' to the end of the
200 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
205 # The second pass generates a dummy entry for each header file.
208 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
211 # The sourcefile does not contain any dependencies, so just
212 # store a dummy comment line, to avoid errors with the Makefile
213 # "include basename.Plo" scheme.
214 echo "#dummy" > "$depfile"
220 # The C for AIX Compiler uses -M and outputs the dependencies
221 # in a .u file. In older versions, this file always lives in the
222 # current directory. Also, the AIX compiler puts `$object:' at the
223 # start of each line; $object doesn't have directory information.
224 # Version 6 uses the directory in both cases.
225 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
226 test "x$dir" = "x$object" && dir=
227 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
228 if test "$libtool" = yes; then
229 tmpdepfile1=$dir$base.u
231 tmpdepfile3=$dir.libs/$base.u
234 tmpdepfile1=$dir$base.u
235 tmpdepfile2=$dir$base.u
236 tmpdepfile3=$dir$base.u
241 if test $stat -eq 0; then :
243 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
247 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
249 test -f "$tmpdepfile" && break
251 if test -f "$tmpdepfile"; then
252 # Each line is of the form `foo.o: dependent.h'.
253 # Do two passes, one to just change these to
254 # `$object: dependent.h' and one to simply `dependent.h:'.
255 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
256 # That's a tab and a space in the [].
257 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
259 # The sourcefile does not contain any dependencies, so just
260 # store a dummy comment line, to avoid errors with the Makefile
261 # "include basename.Plo" scheme.
262 echo "#dummy" > "$depfile"
268 # Intel's C compiler understands `-MD -MF file'. However on
269 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
270 # ICC 7.0 will fill foo.d with something like
273 # which is wrong. We want:
274 # sub/foo.o: sub/foo.c
275 # sub/foo.o: sub/foo.h
278 # ICC 7.1 will output
279 # foo.o: sub/foo.c sub/foo.h
280 # and will wrap long lines using \ :
281 # foo.o: sub/foo.c ... \
285 "$@" -MD -MF "$tmpdepfile"
287 if test $stat -eq 0; then :
293 # Each line is of the form `foo.o: dependent.h',
294 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
295 # Do two passes, one to just change these to
296 # `$object: dependent.h' and one to simply `dependent.h:'.
297 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
298 # Some versions of the HPUX 10.20 sed can't process this invocation
299 # correctly. Breaking it into two sed invocations is a workaround.
300 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
301 sed -e 's/$/ :/' >> "$depfile"
306 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
307 # compilers, which have integrated preprocessors. The correct option
308 # to use with these is +Maked; it writes dependencies to a file named
309 # 'foo.d', which lands next to the object file, wherever that
311 # Much of this is similar to the tru64 case; see comments there.
312 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
313 test "x$dir" = "x$object" && dir=
314 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
315 if test "$libtool" = yes; then
316 tmpdepfile1=$dir$base.d
317 tmpdepfile2=$dir.libs/$base.d
320 tmpdepfile1=$dir$base.d
321 tmpdepfile2=$dir$base.d
325 if test $stat -eq 0; then :
327 rm -f "$tmpdepfile1" "$tmpdepfile2"
331 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
333 test -f "$tmpdepfile" && break
335 if test -f "$tmpdepfile"; then
336 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
337 # Add `dependent.h:' lines.
343 }' "$tmpdepfile" >> "$depfile"
345 echo "#dummy" > "$depfile"
347 rm -f "$tmpdepfile" "$tmpdepfile2"
351 # The Tru64 compiler uses -MD to generate dependencies as a side
352 # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
353 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
354 # dependencies in `foo.d' instead, so we check for that too.
355 # Subdirectories are respected.
356 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
357 test "x$dir" = "x$object" && dir=
358 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
360 if test "$libtool" = yes; then
361 # With Tru64 cc, shared objects can also be used to make a
362 # static library. This mechanism is used in libtool 1.4 series to
363 # handle both shared and static libraries in a single compilation.
364 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
366 # With libtool 1.5 this exception was removed, and libtool now
367 # generates 2 separate objects for the 2 libraries. These two
368 # compilations output dependencies in $dir.libs/$base.o.d and
369 # in $dir$base.o.d. We have to check for both files, because
370 # one of the two compilations can be disabled. We should prefer
371 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
372 # automatically cleaned when .libs/ is deleted, while ignoring
373 # the former would cause a distcleancheck panic.
374 tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
375 tmpdepfile2=$dir$base.o.d # libtool 1.5
376 tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
377 tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
380 tmpdepfile1=$dir$base.o.d
381 tmpdepfile2=$dir$base.d
382 tmpdepfile3=$dir$base.d
383 tmpdepfile4=$dir$base.d
388 if test $stat -eq 0; then :
390 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
394 for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
396 test -f "$tmpdepfile" && break
398 if test -f "$tmpdepfile"; then
399 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
400 # That's a tab and a space in the [].
401 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
403 echo "#dummy" > "$depfile"
409 # This comment above is used by automake to tell side-effect
410 # dependency tracking mechanisms from slower ones.
413 # Important note: in order to support this mode, a compiler *must*
414 # always write the preprocessed file to stdout, regardless of -o.
417 # Remove the call to Libtool.
418 if test "$libtool" = yes; then
419 while test "X$1" != 'X--mode=compile'; do
425 # Remove `-o $object'.
437 set fnord "$@" "$arg"
444 test -z "$dashmflag" && dashmflag=-M
445 # Require at least two characters before searching for `:'
446 # in the target name. This is to cope with DOS-style filenames:
447 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
449 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
451 cat < "$tmpdepfile" > "$depfile"
453 ' < "$tmpdepfile" | \
454 ## Some versions of the HPUX 10.20 sed can't process this invocation
455 ## correctly. Breaking it into two sed invocations is a workaround.
456 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
461 # This case only exists to satisfy depend.m4. It is never actually
462 # run, as this mode is specially recognized in the preamble.
468 # Remove any Libtool call
469 if test "$libtool" = yes; then
470 while test "X$1" != 'X--mode=compile'; do
485 if test $eat = yes; then
491 set fnord "$@" "$arg"; shift ;;
492 # Strip any option that makedepend may not understand. Remove
493 # the object too, otherwise makedepend will parse it as a source file.
499 set fnord "$@" "$arg"; shift ;;
502 obj_suffix=`echo "$object" | sed 's/^.*\././'`
504 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
506 cat < "$tmpdepfile" > "$depfile"
507 sed '1,2d' "$tmpdepfile" | tr ' ' '
509 ## Some versions of the HPUX 10.20 sed can't process this invocation
510 ## correctly. Breaking it into two sed invocations is a workaround.
511 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
512 rm -f "$tmpdepfile" "$tmpdepfile".bak
516 # Important note: in order to support this mode, a compiler *must*
517 # always write the preprocessed file to stdout.
520 # Remove the call to Libtool.
521 if test "$libtool" = yes; then
522 while test "X$1" != 'X--mode=compile'; do
528 # Remove `-o $object'.
540 set fnord "$@" "$arg"
548 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
549 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
550 sed '$ s: \\$::' > "$tmpdepfile"
552 echo "$object : \\" > "$depfile"
553 cat < "$tmpdepfile" >> "$depfile"
554 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
559 # Important note: in order to support this mode, a compiler *must*
560 # always write the preprocessed file to stdout.
563 # Remove the call to Libtool.
564 if test "$libtool" = yes; then
565 while test "X$1" != 'X--mode=compile'; do
581 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
587 set fnord "$@" "$arg"
593 "$@" -E 2>/dev/null |
594 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
596 echo "$object : \\" > "$depfile"
597 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
598 echo " " >> "$depfile"
599 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
604 # This case exists only to let depend.m4 do its work. It works by
605 # looking at the text of this script. This case will never be run,
606 # since it is checked for above.
615 echo "Unknown depmode $depmode" 1>&2
625 # eval: (add-hook 'write-file-hooks 'time-stamp)
626 # time-stamp-start: "scriptversion="
627 # time-stamp-format: "%:y-%02m-%02d.%02H"
628 # time-stamp-time-zone: "UTC"
629 # time-stamp-end: "; # UTC"