2 # depcomp - compile a program generating dependencies as side-effects
4 scriptversion=2003-11-08.23
6 # Copyright (C) 1999, 2000, 2003 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 depfile Dependency file to output.
45 tmpdepfile Temporary file to use when outputing dependencies.
46 libtool Whether libtool is used (yes/no).
48 Report bugs to <bug-automake@gnu.org>.
53 echo "depcomp $scriptversion"
58 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
59 echo "depcomp: Variables source, object and depmode must be set" 1>&2
62 # `libtool' can also be set to `yes' or `no'.
64 if test -z "$depfile"; then
65 base=`echo "$object" | sed -e 's,^.*/,,' -e 's,\.\([^.]*\)$,.P\1,'`
66 dir=`echo "$object" | sed 's,/.*$,/,'`
67 if test "$dir" = "$object"; then
70 # FIXME: should be _deps on DOS.
71 depfile="$dir.deps/$base"
74 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
78 # Some modes work just like other modes, but use different flags. We
79 # parameterize here, but still list the modes in the big case below,
80 # to make depend.m4 easier to write. Note that we *cannot* use a case
81 # here, because this file can only contain one case statement.
82 if test "$depmode" = hp; then
83 # HP compiler uses -M and no extra arg.
88 if test "$depmode" = dashXmstdout; then
89 # This is just like dashmstdout with a different argument.
96 ## gcc 3 implements dependency tracking that does exactly what
97 ## we want. Yay! Note: for some reason libtool 1.4 doesn't like
98 ## it if -MD -MP comes after the -MF stuff. Hmm.
99 "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
101 if test $stat -eq 0; then :
106 mv "$tmpdepfile" "$depfile"
110 ## There are various ways to get dependency output from gcc. Here's
111 ## why we pick this rather obscure method:
112 ## - Don't want to use -MD because we'd like the dependencies to end
113 ## up in a subdir. Having to rename by hand is ugly.
114 ## (We might end up doing this anyway to support other compilers.)
115 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
116 ## -MM, not -M (despite what the docs say).
117 ## - Using -M directly means running the compiler twice (even worse
119 if test -z "$gccflag"; then
122 "$@" -Wp,"$gccflag$tmpdepfile"
124 if test $stat -eq 0; then :
130 echo "$object : \\" > "$depfile"
131 alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
132 ## The second -e expression handles DOS-style file names with drive letters.
133 sed -e 's/^[^:]*: / /' \
134 -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
135 ## This next piece of magic avoids the `deleted header file' problem.
136 ## The problem is that when a header file which appears in a .P file
137 ## is deleted, the dependency causes make to die (because there is
138 ## typically no way to rebuild the header). We avoid this by adding
139 ## dummy dependencies for each header file. Too bad gcc doesn't do
140 ## this for us directly.
143 ## Some versions of gcc put a space before the `:'. On the theory
144 ## that the space means something, we add a space to the output as
146 ## Some versions of the HPUX 10.20 sed can't process this invocation
147 ## correctly. Breaking it into two sed invocations is a workaround.
148 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
153 # This case exists only to let depend.m4 do its work. It works by
154 # looking at the text of this script. This case will never be run,
155 # since it is checked for above.
160 if test "$libtool" = yes; then
161 "$@" "-Wp,-MDupdate,$tmpdepfile"
163 "$@" -MDupdate "$tmpdepfile"
166 if test $stat -eq 0; then :
173 if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
174 echo "$object : \\" > "$depfile"
176 # Clip off the initial element (the dependent). Don't try to be
177 # clever and replace this with sed code, as IRIX sed won't handle
178 # lines with more than a fixed number of characters (4096 in
179 # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
180 # the IRIX cc adds comments like `#:fec' to the end of the
184 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
189 # The second pass generates a dummy entry for each header file.
192 | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
195 # The sourcefile does not contain any dependencies, so just
196 # store a dummy comment line, to avoid errors with the Makefile
197 # "include basename.Plo" scheme.
198 echo "#dummy" > "$depfile"
204 # The C for AIX Compiler uses -M and outputs the dependencies
205 # in a .u file. In older versions, this file always lives in the
206 # current directory. Also, the AIX compiler puts `$object:' at the
207 # start of each line; $object doesn't have directory information.
208 # Version 6 uses the directory in both cases.
209 stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
210 tmpdepfile="$stripped.u"
211 if test "$libtool" = yes; then
218 if test -f "$tmpdepfile"; then :
220 stripped=`echo "$stripped" | sed 's,^.*/,,'`
221 tmpdepfile="$stripped.u"
224 if test $stat -eq 0; then :
230 if test -f "$tmpdepfile"; then
231 outname="$stripped.o"
232 # Each line is of the form `foo.o: dependent.h'.
233 # Do two passes, one to just change these to
234 # `$object: dependent.h' and one to simply `dependent.h:'.
235 sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
236 sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
238 # The sourcefile does not contain any dependencies, so just
239 # store a dummy comment line, to avoid errors with the Makefile
240 # "include basename.Plo" scheme.
241 echo "#dummy" > "$depfile"
247 # Intel's C compiler understands `-MD -MF file'. However on
248 # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
249 # ICC 7.0 will fill foo.d with something like
252 # which is wrong. We want:
253 # sub/foo.o: sub/foo.c
254 # sub/foo.o: sub/foo.h
257 # ICC 7.1 will output
258 # foo.o: sub/foo.c sub/foo.h
259 # and will wrap long lines using \ :
260 # foo.o: sub/foo.c ... \
264 "$@" -MD -MF "$tmpdepfile"
266 if test $stat -eq 0; then :
272 # Each line is of the form `foo.o: dependent.h',
273 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
274 # Do two passes, one to just change these to
275 # `$object: dependent.h' and one to simply `dependent.h:'.
276 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
277 # Some versions of the HPUX 10.20 sed can't process this invocation
278 # correctly. Breaking it into two sed invocations is a workaround.
279 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
280 sed -e 's/$/ :/' >> "$depfile"
285 # The Tru64 compiler uses -MD to generate dependencies as a side
286 # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
287 # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
288 # dependencies in `foo.d' instead, so we check for that too.
289 # Subdirectories are respected.
290 dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
291 test "x$dir" = "x$object" && dir=
292 base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
294 if test "$libtool" = yes; then
295 tmpdepfile1="$dir.libs/$base.lo.d"
296 tmpdepfile2="$dir.libs/$base.d"
299 tmpdepfile1="$dir$base.o.d"
300 tmpdepfile2="$dir$base.d"
305 if test $stat -eq 0; then :
307 rm -f "$tmpdepfile1" "$tmpdepfile2"
311 if test -f "$tmpdepfile1"; then
312 tmpdepfile="$tmpdepfile1"
314 tmpdepfile="$tmpdepfile2"
316 if test -f "$tmpdepfile"; then
317 sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
318 # That's a tab and a space in the [].
319 sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
321 echo "#dummy" > "$depfile"
327 # This comment above is used by automake to tell side-effect
328 # dependency tracking mechanisms from slower ones.
331 # Important note: in order to support this mode, a compiler *must*
332 # always write the preprocessed file to stdout, regardless of -o.
335 # Remove the call to Libtool.
336 if test "$libtool" = yes; then
337 while test $1 != '--mode=compile'; do
343 # Remove `-o $object'.
355 set fnord "$@" "$arg"
362 test -z "$dashmflag" && dashmflag=-M
363 # Require at least two characters before searching for `:'
364 # in the target name. This is to cope with DOS-style filenames:
365 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
367 sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
369 cat < "$tmpdepfile" > "$depfile"
371 ' < "$tmpdepfile" | \
372 ## Some versions of the HPUX 10.20 sed can't process this invocation
373 ## correctly. Breaking it into two sed invocations is a workaround.
374 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
379 # This case only exists to satisfy depend.m4. It is never actually
380 # run, as this mode is specially recognized in the preamble.
386 # Remove any Libtool call
387 if test "$libtool" = yes; then
388 while test $1 != '--mode=compile'; do
404 set fnord "$@" "$arg"; shift ;;
405 # Strip any option that makedepend may not understand. Remove
406 # the object too, otherwise makedepend will parse it as a source file.
410 set fnord "$@" "$arg"; shift ;;
413 obj_suffix="`echo $object | sed 's/^.*\././'`"
415 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
417 cat < "$tmpdepfile" > "$depfile"
418 sed '1,2d' "$tmpdepfile" | tr ' ' '
420 ## Some versions of the HPUX 10.20 sed can't process this invocation
421 ## correctly. Breaking it into two sed invocations is a workaround.
422 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
423 rm -f "$tmpdepfile" "$tmpdepfile".bak
427 # Important note: in order to support this mode, a compiler *must*
428 # always write the preprocessed file to stdout.
431 # Remove the call to Libtool.
432 if test "$libtool" = yes; then
433 while test $1 != '--mode=compile'; do
439 # Remove `-o $object'.
451 set fnord "$@" "$arg"
459 sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
460 sed '$ s: \\$::' > "$tmpdepfile"
462 echo "$object : \\" > "$depfile"
463 cat < "$tmpdepfile" >> "$depfile"
464 sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
469 # Important note: in order to support this mode, a compiler *must*
470 # always write the preprocessed file to stdout, regardless of -o,
471 # because we must use -o when running libtool.
477 "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
483 set fnord "$@" "$arg"
490 sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
492 echo "$object : \\" > "$depfile"
493 . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
494 echo " " >> "$depfile"
495 . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
504 echo "Unknown depmode $depmode" 1>&2
514 # eval: (add-hook 'write-file-hooks 'time-stamp)
515 # time-stamp-start: "scriptversion="
516 # time-stamp-format: "%:y-%02m-%02d.%02H"
517 # time-stamp-end: "$"