2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion
=2012-07-12.20
; # 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/\.\([^.]*\)$/.T\1/'`}
77 # Avoid interferences from the environment.
80 # Some modes work just like other modes, but use different flags. We
81 # parameterize here, but still list the modes in the big case below,
82 # to make depend.m4 easier to write. Note that we *cannot* use a case
83 # here, because this file can only contain one case statement.
84 if test "$depmode" = hp
; then
85 # HP compiler uses -M and no extra arg.
90 if test "$depmode" = dashXmstdout
; then
91 # This is just like dashmstdout with a different argument.
96 cygpath_u
="cygpath -u -f -"
97 if test "$depmode" = msvcmsys
; then
98 # This is just like msvisualcpp 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'
105 if test "$depmode" = msvc7msys
; then
106 # This is just like msvc7 but w/o cygpath translation.
107 # Just convert the backslash-escaped backslashes to single forward
108 # slashes to satisfy depend.m4
109 cygpath_u
='sed s,\\\\,/,g'
113 if test "$depmode" = xlc
; then
114 # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
115 gccflag
=-qmakedep=gcc
,-MF
121 ## gcc 3 implements dependency tracking that does exactly what
122 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
123 ## it if -MD -MP comes after the -MF stuff. Hmm.
124 ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
125 ## the command line argument order; so add the flags where they
126 ## appear in depend2.am. Note that the slowdown incurred here
127 ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
131 -c) set fnord
"$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
132 *) set fnord
"$@" "$arg" ;;
139 if test $stat -eq 0; then :
144 mv "$tmpdepfile" "$depfile"
148 ## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
149 ## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
150 ## (see the conditional assignment to $gccflag above).
151 ## There are various ways to get dependency output from gcc. Here's
152 ## why we pick this rather obscure method:
153 ## - Don't want to use -MD because we'd like the dependencies to end
154 ## up in a subdir. Having to rename by hand is ugly.
155 ## (We might end up doing this anyway to support other compilers.)
156 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
157 ## -MM, not -M (despite what the docs say). Also, it might not be
158 ## supported by the other compilers which use the 'gcc' depmode.
159 ## - Using -M directly means running the compiler twice (even worse
161 if test -z "$gccflag"; then
164 "$@" -Wp,"$gccflag$tmpdepfile"
166 if test $stat -eq 0; then :
172 echo "$object : \\" > "$depfile"
173 alpha
=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
174 ## The second -e expression handles DOS-style file names with drive letters.
175 sed -e 's/^[^:]*: / /' \
176 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
177 ## This next piece of magic avoids the "deleted header file" problem.
178 ## The problem is that when a header file which appears in a .P file
179 ## is deleted, the dependency causes make to die (because there is
180 ## typically no way to rebuild the header). We avoid this by adding
181 ## dummy dependencies for each header file. Too bad gcc doesn't do
182 ## this for us directly.
183 tr ' ' "$nl" < "$tmpdepfile" |
184 ## Some versions of gcc put a space before the ':'. On the theory
185 ## that the space means something, we add a space to the output as
186 ## well. hp depmode also adds that space, but also prefixes the VPATH
187 ## to the object. Take care to not repeat it in the output.
188 ## Some versions of the HPUX 10.20 sed can't process this invocation
189 ## correctly. Breaking it into two sed invocations is a workaround.
190 sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
191 |
sed -e 's/$/ :/' >> "$depfile"
196 # This case exists only to let depend.m4 do its work. It works by
197 # looking at the text of this script. This case will never be run,
198 # since it is checked for above.
203 if test "$libtool" = yes; then
204 "$@" "-Wp,-MDupdate,$tmpdepfile"
206 "$@" -MDupdate "$tmpdepfile"
209 if test $stat -eq 0; then :
216 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
217 echo "$object : \\" > "$depfile"
219 # Clip off the initial element (the dependent). Don't try to be
220 # clever and replace this with sed code, as IRIX sed won't handle
221 # lines with more than a fixed number of characters (4096 in
222 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
223 # the IRIX cc adds comments like '#:fec' to the end of the
225 tr ' ' "$nl" < "$tmpdepfile" \
226 |
sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
227 tr "$nl" ' ' >> "$depfile"
230 # The second pass generates a dummy entry for each header file.
231 tr ' ' "$nl" < "$tmpdepfile" \
232 |
sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
235 # The sourcefile does not contain any dependencies, so just
236 # store a dummy comment line, to avoid errors with the Makefile
237 # "include basename.Plo" scheme.
238 echo "#dummy" > "$depfile"
244 # This case exists only to let depend.m4 do its work. It works by
245 # looking at the text of this script. This case will never be run,
246 # since it is checked for above.
251 # The C for AIX Compiler uses -M and outputs the dependencies
252 # in a .u file. In older versions, this file always lives in the
253 # current directory. Also, the AIX compiler puts '$object:' at the
254 # start of each line; $object doesn't have directory information.
255 # Version 6 uses the directory in both cases.
256 dir
=`echo "$object" | sed -e 's|/[^/]*$|/|'`
257 test "x$dir" = "x$object" && dir
=
258 base
=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
259 if test "$libtool" = yes; then
260 tmpdepfile1
=$dir$base.u
262 tmpdepfile3
=$dir.libs
/$base.u
265 tmpdepfile1
=$dir$base.u
266 tmpdepfile2
=$dir$base.u
267 tmpdepfile3
=$dir$base.u
272 if test $stat -eq 0; then :
274 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
278 for tmpdepfile
in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
280 test -f "$tmpdepfile" && break
282 if test -f "$tmpdepfile"; then
283 # Each line is of the form 'foo.o: dependent.h'.
284 # Do two passes, one to just change these to
285 # '$object: dependent.h' and one to simply 'dependent.h:'.
286 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
287 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
289 # The sourcefile does not contain any dependencies, so just
290 # store a dummy comment line, to avoid errors with the Makefile
291 # "include basename.Plo" scheme.
292 echo "#dummy" > "$depfile"
298 # Intel's C compiler anf tcc (Tiny C Compiler) understand '-MD -MF file'.
300 # $CC -MD -MF foo.d -c -o sub/foo.o sub/foo.c
301 # ICC 7.0 will fill foo.d with something like
304 # which is wrong. We want
305 # sub/foo.o: sub/foo.c
306 # sub/foo.o: sub/foo.h
309 # ICC 7.1 will output
310 # foo.o: sub/foo.c sub/foo.h
311 # and will wrap long lines using '\':
312 # foo.o: sub/foo.c ... \
315 # tcc 0.9.26 (FIXME still under development at the moment of writing)
316 # will emit a similar output, but also prepend the continuation lines
317 # with horizontal tabulation characters.
318 "$@" -MD -MF "$tmpdepfile"
320 if test $stat -eq 0; then :
326 # Each line is of the form 'foo.o: dependent.h',
327 # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
328 # Do two passes, one to just change these to
329 # '$object: dependent.h' and one to simply 'dependent.h:'.
330 sed -e "s/^[ $tab][ $tab]*/ /" -e "s,^[^:]*:,$object :," \
331 < "$tmpdepfile" > "$depfile"
333 s/[ '"$tab"'][ '"$tab"']*/ /g
340 ' < "$tmpdepfile" >> "$depfile"
344 ## The order of this option in the case statement is important, since the
345 ## shell code in configure will try each of these formats in the order
346 ## listed in this file. A plain '-MD' option would be understood by many
347 ## compilers, so we must ensure this comes after the gcc and icc options.
349 # Portland's C compiler understands '-MD'.
350 # Will always output deps to 'file.d' where file is the root name of the
351 # source file under compilation, even if file resides in a subdirectory.
352 # The object file name does not affect the name of the '.d' file.
353 # pgcc 10.2 will output
354 # foo.o: sub/foo.c sub/foo.h
355 # and will wrap long lines using '\' :
356 # foo.o: sub/foo.c ... \
359 dir
=`echo "$object" | sed -e 's|/[^/]*$|/|'`
360 test "x$dir" = "x$object" && dir
=
361 # Use the source, not the object, to determine the base name, since
362 # that's sadly what pgcc will do too.
363 base
=`echo "$source" | sed -e 's|^.*/||' -e 's/\.[-_a-zA-Z0-9]*$//'`
366 # For projects that build the same source file twice into different object
367 # files, the pgcc approach of using the *source* file root name can cause
368 # problems in parallel builds. Use a locking strategy to avoid stomping on
369 # the same $tmpdepfile.
370 lockdir
="$base.d-lock"
371 trap "echo '$0: caught signal, cleaning up...' >&2; rm -rf $lockdir" 1 2 13 15
374 while test $i -gt 0 ; do
375 # mkdir is a portable test-and-set.
376 if mkdir
$lockdir 2>/dev
/null
; then
377 # This process acquired the lock.
384 ## the lock is being held by a different process,
385 ## wait until the winning process is done or we timeout
386 while test -d $lockdir && test $i -gt 0; do
394 if test $i -le 0; then
395 echo "$0: failed to acquire lock after $numtries attempts" >&2
396 echo "$0: check lockdir '$lockdir'" >&2
400 if test $stat -ne 0; then
405 # Each line is of the form `foo.o: dependent.h',
406 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
407 # Do two passes, one to just change these to
408 # `$object: dependent.h' and one to simply `dependent.h:'.
409 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
410 # Some versions of the HPUX 10.20 sed can't process this invocation
411 # correctly. Breaking it into two sed invocations is a workaround.
412 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
413 sed -e 's/$/ :/' >> "$depfile"
418 # The "hp" stanza above does not work with aCC (C++) and HP's ia64
419 # compilers, which have integrated preprocessors. The correct option
420 # to use with these is +Maked; it writes dependencies to a file named
421 # 'foo.d', which lands next to the object file, wherever that
423 # Much of this is similar to the tru64 case; see comments there.
424 dir
=`echo "$object" | sed -e 's|/[^/]*$|/|'`
425 test "x$dir" = "x$object" && dir
=
426 base
=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
427 if test "$libtool" = yes; then
428 tmpdepfile1
=$dir$base.d
429 tmpdepfile2
=$dir.libs
/$base.d
432 tmpdepfile1
=$dir$base.d
433 tmpdepfile2
=$dir$base.d
437 if test $stat -eq 0; then :
439 rm -f "$tmpdepfile1" "$tmpdepfile2"
443 for tmpdepfile
in "$tmpdepfile1" "$tmpdepfile2"
445 test -f "$tmpdepfile" && break
447 if test -f "$tmpdepfile"; then
448 sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
449 # Add 'dependent.h:' lines.
455 }' "$tmpdepfile" >> "$depfile"
457 echo "#dummy" > "$depfile"
459 rm -f "$tmpdepfile" "$tmpdepfile2"
463 # The Tru64 compiler uses -MD to generate dependencies as a side
464 # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
465 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
466 # dependencies in 'foo.d' instead, so we check for that too.
467 # Subdirectories are respected.
468 dir
=`echo "$object" | sed -e 's|/[^/]*$|/|'`
469 test "x$dir" = "x$object" && dir
=
470 base
=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
472 if test "$libtool" = yes; then
473 # With Tru64 cc, shared objects can also be used to make a
474 # static library. This mechanism is used in libtool 1.4 series to
475 # handle both shared and static libraries in a single compilation.
476 # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
478 # With libtool 1.5 this exception was removed, and libtool now
479 # generates 2 separate objects for the 2 libraries. These two
480 # compilations output dependencies in $dir.libs/$base.o.d and
481 # in $dir$base.o.d. We have to check for both files, because
482 # one of the two compilations can be disabled. We should prefer
483 # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
484 # automatically cleaned when .libs/ is deleted, while ignoring
485 # the former would cause a distcleancheck panic.
486 tmpdepfile1
=$dir.libs
/$base.lo.d
# libtool 1.4
487 tmpdepfile2
=$dir$base.o.d
# libtool 1.5
488 tmpdepfile3
=$dir.libs
/$base.o.d
# libtool 1.5
489 tmpdepfile4
=$dir.libs
/$base.d
# Compaq CCC V6.2-504
492 tmpdepfile1
=$dir$base.o.d
493 tmpdepfile2
=$dir$base.d
494 tmpdepfile3
=$dir$base.d
495 tmpdepfile4
=$dir$base.d
500 if test $stat -eq 0; then :
502 rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
506 for tmpdepfile
in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
508 test -f "$tmpdepfile" && break
510 if test -f "$tmpdepfile"; then
511 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
512 sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
514 echo "#dummy" > "$depfile"
520 if test "$libtool" = yes; then
521 showIncludes
=-Wc,-showIncludes
523 showIncludes
=-showIncludes
525 "$@" $showIncludes > "$tmpdepfile"
527 grep -v '^Note: including file: ' "$tmpdepfile"
528 if test "$stat" = 0; then :
534 echo "$object : \\" > "$depfile"
535 # The first sed program below extracts the file names and escapes
536 # backslashes for cygpath. The second sed program outputs the file
537 # name when reading, but also accumulates all include files in the
538 # hold buffer in order to output them again at the end. This only
539 # works with sed implementations that can handle large buffers.
540 sed < "$tmpdepfile" -n '
541 /^Note: including file: *\(.*\)/ {
545 }' |
$cygpath_u |
sort -u |
sed -n '
547 s/\(.*\)/'"$tab"'\1 \\/p
559 # This case exists only to let depend.m4 do its work. It works by
560 # looking at the text of this script. This case will never be run,
561 # since it is checked for above.
566 # This comment above is used by automake to tell side-effect
567 # dependency tracking mechanisms from slower ones.
570 # Important note: in order to support this mode, a compiler *must*
571 # always write the preprocessed file to stdout, regardless of -o.
574 # Remove the call to Libtool.
575 if test "$libtool" = yes; then
576 while test "X$1" != 'X--mode=compile'; do
582 # Remove '-o $object'.
594 set fnord
"$@" "$arg"
601 test -z "$dashmflag" && dashmflag
=-M
602 # Require at least two characters before searching for ':'
603 # in the target name. This is to cope with DOS-style filenames:
604 # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
606 sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
608 cat < "$tmpdepfile" > "$depfile"
609 tr ' ' "$nl" < "$tmpdepfile" | \
610 ## Some versions of the HPUX 10.20 sed can't process this invocation
611 ## correctly. Breaking it into two sed invocations is a workaround.
612 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' |
sed -e 's/$/ :/' >> "$depfile"
617 # This case only exists to satisfy depend.m4. It is never actually
618 # run, as this mode is specially recognized in the preamble.
624 # Remove any Libtool call
625 if test "$libtool" = yes; then
626 while test "X$1" != 'X--mode=compile'; do
641 if test $eat = yes; then
647 set fnord
"$@" "$arg"; shift ;;
648 # Strip any option that makedepend may not understand. Remove
649 # the object too, otherwise makedepend will parse it as a source file.
655 set fnord
"$@" "$arg"; shift ;;
658 obj_suffix
=`echo "$object" | sed 's/^.*\././'`
660 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
662 # makedepend may prepend the VPATH from the source file name to the object.
663 # No need to regex-escape $object, excess matching of '.' is harmless.
664 sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
665 sed '1,2d' "$tmpdepfile" |
tr ' ' "$nl" | \
666 ## Some versions of the HPUX 10.20 sed can't process this invocation
667 ## correctly. Breaking it into two sed invocations is a workaround.
668 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' |
sed -e 's/$/ :/' >> "$depfile"
669 rm -f "$tmpdepfile" "$tmpdepfile".bak
673 # Important note: in order to support this mode, a compiler *must*
674 # always write the preprocessed file to stdout.
677 # Remove the call to Libtool.
678 if test "$libtool" = yes; then
679 while test "X$1" != 'X--mode=compile'; do
685 # Remove '-o $object'.
697 set fnord
"$@" "$arg"
705 sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
706 -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
707 sed '$ s: \\$::' > "$tmpdepfile"
709 echo "$object : \\" > "$depfile"
710 cat < "$tmpdepfile" >> "$depfile"
711 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
716 # Important note: in order to support this mode, a compiler *must*
717 # always write the preprocessed file to stdout.
720 # Remove the call to Libtool.
721 if test "$libtool" = yes; then
722 while test "X$1" != 'X--mode=compile'; do
738 "-Gm"|
"/Gm"|
"-Gi"|
"/Gi"|
"-ZI"|
"/ZI")
744 set fnord
"$@" "$arg"
750 "$@" -E 2>/dev
/null |
751 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' |
$cygpath_u |
sort -u > "$tmpdepfile"
753 echo "$object : \\" > "$depfile"
754 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
755 echo "$tab" >> "$depfile"
756 sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
761 # This case exists only to let depend.m4 do its work. It works by
762 # looking at the text of this script. This case will never be run,
763 # since it is checked for above.
772 echo "Unknown depmode $depmode" 1>&2
782 # eval: (add-hook 'write-file-hooks 'time-stamp)
783 # time-stamp-start: "scriptversion="
784 # time-stamp-format: "%:y-%02m-%02d.%02H"
785 # time-stamp-time-zone: "UTC"
786 # time-stamp-end: "; # UTC"