Annotation of rpl/depcomp, revision 1.2
1.1 bertrand 1: #! /bin/sh
2: # depcomp - compile a program generating dependencies as side-effects
3:
4: scriptversion=2009-04-28.21; # UTC
5:
6: # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
7: # Software Foundation, Inc.
8:
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)
12: # any later version.
13:
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.
18:
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/>.
21:
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.
26:
27: # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
28:
29: case $1 in
30: '')
31: echo "$0: No command. Try \`$0 --help' for more information." 1>&2
32: exit 1;
33: ;;
34: -h | --h*)
35: cat <<\EOF
36: Usage: depcomp [--help] [--version] PROGRAM [ARGS]
37:
38: Run PROGRAMS ARGS to compile a file, generating dependencies
39: as side-effects.
40:
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).
49:
50: Report bugs to <bug-automake@gnu.org>.
51: EOF
52: exit $?
53: ;;
54: -v | --v*)
55: echo "depcomp $scriptversion"
56: exit $?
57: ;;
58: esac
59:
60: if test -z "$depmode" || test -z "$source" || test -z "$object"; then
61: echo "depcomp: Variables source, object and depmode must be set" 1>&2
62: exit 1
63: fi
64:
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/\.\([^.]*\)$/.T\1/'`}
69:
70: rm -f "$tmpdepfile"
71:
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 "$depmode" = hp; then
77: # HP compiler uses -M and no extra arg.
78: gccflag=-M
79: depmode=gcc
80: fi
81:
82: if test "$depmode" = dashXmstdout; then
83: # This is just like dashmstdout with a different argument.
84: dashmflag=-xM
85: depmode=dashmstdout
86: fi
87:
88: cygpath_u="cygpath -u -f -"
89: if test "$depmode" = msvcmsys; then
90: # This is just like msvisualcpp but w/o cygpath translation.
91: # Just convert the backslash-escaped backslashes to single forward
92: # slashes to satisfy depend.m4
93: cygpath_u="sed s,\\\\\\\\,/,g"
94: depmode=msvisualcpp
95: fi
96:
97: case "$depmode" in
98: gcc3)
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.
106: for arg
107: do
108: case $arg in
109: -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
110: *) set fnord "$@" "$arg" ;;
111: esac
112: shift # fnord
113: shift # $arg
114: done
115: "$@"
116: stat=$?
117: if test $stat -eq 0; then :
118: else
119: rm -f "$tmpdepfile"
120: exit $stat
121: fi
122: mv "$tmpdepfile" "$depfile"
123: ;;
124:
125: gcc)
126: ## There are various ways to get dependency output from gcc. Here's
127: ## why we pick this rather obscure method:
128: ## - Don't want to use -MD because we'd like the dependencies to end
129: ## up in a subdir. Having to rename by hand is ugly.
130: ## (We might end up doing this anyway to support other compilers.)
131: ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
132: ## -MM, not -M (despite what the docs say).
133: ## - Using -M directly means running the compiler twice (even worse
134: ## than renaming).
135: if test -z "$gccflag"; then
136: gccflag=-MD,
137: fi
138: "$@" -Wp,"$gccflag$tmpdepfile"
139: stat=$?
140: if test $stat -eq 0; then :
141: else
142: rm -f "$tmpdepfile"
143: exit $stat
144: fi
145: rm -f "$depfile"
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" >> "$depfile"
151: ## This next piece of magic avoids the `deleted header file' problem.
152: ## The problem is that when a header file which appears in a .P file
153: ## is deleted, the dependency causes make to die (because there is
154: ## typically no way to rebuild the header). We avoid this by adding
155: ## dummy dependencies for each header file. Too bad gcc doesn't do
156: ## this for us directly.
157: tr ' ' '
158: ' < "$tmpdepfile" |
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
161: ## well.
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"
165: rm -f "$tmpdepfile"
166: ;;
167:
168: hp)
169: # This case exists only to let depend.m4 do its work. It works by
170: # looking at the text of this script. This case will never be run,
171: # since it is checked for above.
172: exit 1
173: ;;
174:
175: sgi)
176: if test "$libtool" = yes; then
177: "$@" "-Wp,-MDupdate,$tmpdepfile"
178: else
179: "$@" -MDupdate "$tmpdepfile"
180: fi
181: stat=$?
182: if test $stat -eq 0; then :
183: else
184: rm -f "$tmpdepfile"
185: exit $stat
186: fi
187: rm -f "$depfile"
188:
189: if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
190: echo "$object : \\" > "$depfile"
191:
192: # Clip off the initial element (the dependent). Don't try to be
193: # clever and replace this with sed code, as IRIX sed won't handle
194: # lines with more than a fixed number of characters (4096 in
195: # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
196: # the IRIX cc adds comments like `#:fec' to the end of the
197: # dependency line.
198: tr ' ' '
199: ' < "$tmpdepfile" \
200: | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
201: tr '
202: ' ' ' >> "$depfile"
203: echo >> "$depfile"
204:
205: # The second pass generates a dummy entry for each header file.
206: tr ' ' '
207: ' < "$tmpdepfile" \
208: | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
209: >> "$depfile"
210: else
211: # The sourcefile does not contain any dependencies, so just
212: # store a dummy comment line, to avoid errors with the Makefile
213: # "include basename.Plo" scheme.
214: echo "#dummy" > "$depfile"
215: fi
216: rm -f "$tmpdepfile"
217: ;;
218:
219: aix)
220: # The C for AIX Compiler uses -M and outputs the dependencies
221: # in a .u file. In older versions, this file always lives in the
222: # current directory. Also, the AIX compiler puts `$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$base.u
230: tmpdepfile2=$base.u
231: tmpdepfile3=$dir.libs/$base.u
232: "$@" -Wc,-M
233: else
234: tmpdepfile1=$dir$base.u
235: tmpdepfile2=$dir$base.u
236: tmpdepfile3=$dir$base.u
237: "$@" -M
238: fi
239: stat=$?
240:
241: if test $stat -eq 0; then :
242: else
243: rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
244: exit $stat
245: fi
246:
247: for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
248: do
249: test -f "$tmpdepfile" && break
250: done
251: if test -f "$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" >> "$depfile"
258: else
259: # The sourcefile does not contain any dependencies, so just
260: # store a dummy comment line, to avoid errors with the Makefile
261: # "include basename.Plo" scheme.
262: echo "#dummy" > "$depfile"
263: fi
264: rm -f "$tmpdepfile"
265: ;;
266:
267: icc)
268: # Intel's C compiler understands `-MD -MF file'. However on
269: # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
270: # ICC 7.0 will fill foo.d with something like
271: # foo.o: sub/foo.c
272: # foo.o: sub/foo.h
273: # which is wrong. We want:
274: # sub/foo.o: sub/foo.c
275: # sub/foo.o: sub/foo.h
276: # sub/foo.c:
277: # sub/foo.h:
278: # ICC 7.1 will output
279: # foo.o: sub/foo.c sub/foo.h
280: # and will wrap long lines using \ :
281: # foo.o: sub/foo.c ... \
282: # sub/foo.h ... \
283: # ...
284:
285: "$@" -MD -MF "$tmpdepfile"
286: stat=$?
287: if test $stat -eq 0; then :
288: else
289: rm -f "$tmpdepfile"
290: exit $stat
291: fi
292: rm -f "$depfile"
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' < "$tmpdepfile" |
301: sed -e 's/$/ :/' >> "$depfile"
302: rm -f "$tmpdepfile"
303: ;;
304:
305: hp2)
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
310: # happens to be.
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
318: "$@" -Wc,+Maked
319: else
320: tmpdepfile1=$dir$base.d
321: tmpdepfile2=$dir$base.d
322: "$@" +Maked
323: fi
324: stat=$?
325: if test $stat -eq 0; then :
326: else
327: rm -f "$tmpdepfile1" "$tmpdepfile2"
328: exit $stat
329: fi
330:
331: for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
332: do
333: test -f "$tmpdepfile" && break
334: done
335: if test -f "$tmpdepfile"; then
336: sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
337: # Add `dependent.h:' lines.
338: sed -ne '2,${
339: s/^ *//
340: s/ \\*$//
341: s/$/:/
342: p
343: }' "$tmpdepfile" >> "$depfile"
344: else
345: echo "#dummy" > "$depfile"
346: fi
347: rm -f "$tmpdepfile" "$tmpdepfile2"
348: ;;
349:
350: tru64)
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$//'`
359:
360: if test "$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.
365: #
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
378: "$@" -Wc,-MD
379: else
380: tmpdepfile1=$dir$base.o.d
381: tmpdepfile2=$dir$base.d
382: tmpdepfile3=$dir$base.d
383: tmpdepfile4=$dir$base.d
384: "$@" -MD
385: fi
386:
387: stat=$?
388: if test $stat -eq 0; then :
389: else
390: rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
391: exit $stat
392: fi
393:
394: for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
395: do
396: test -f "$tmpdepfile" && break
397: done
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" >> "$depfile"
402: else
403: echo "#dummy" > "$depfile"
404: fi
405: rm -f "$tmpdepfile"
406: ;;
407:
408: #nosideeffect)
409: # This comment above is used by automake to tell side-effect
410: # dependency tracking mechanisms from slower ones.
411:
412: dashmstdout)
413: # Important note: in order to support this mode, a compiler *must*
414: # always write the preprocessed file to stdout, regardless of -o.
415: "$@" || exit $?
416:
417: # Remove the call to Libtool.
418: if test "$libtool" = yes; then
419: while test "X$1" != 'X--mode=compile'; do
420: shift
421: done
422: shift
423: fi
424:
425: # Remove `-o $object'.
426: IFS=" "
427: for arg
428: do
429: case $arg in
430: -o)
431: shift
432: ;;
433: $object)
434: shift
435: ;;
436: *)
437: set fnord "$@" "$arg"
438: shift # fnord
439: shift # $arg
440: ;;
441: esac
442: done
443:
444: test -z "$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.
448: "$@" $dashmflag |
449: sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
450: rm -f "$depfile"
451: cat < "$tmpdepfile" > "$depfile"
452: tr ' ' '
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"
457: rm -f "$tmpdepfile"
458: ;;
459:
460: dashXmstdout)
461: # This case only exists to satisfy depend.m4. It is never actually
462: # run, as this mode is specially recognized in the preamble.
463: exit 1
464: ;;
465:
466: makedepend)
467: "$@" || exit $?
468: # Remove any Libtool call
469: if test "$libtool" = yes; then
470: while test "X$1" != 'X--mode=compile'; do
471: shift
472: done
473: shift
474: fi
475: # X makedepend
476: shift
477: cleared=no eat=no
478: for arg
479: do
480: case $cleared in
481: no)
482: set ""; shift
483: cleared=yes ;;
484: esac
485: if test $eat = yes; then
486: eat=no
487: continue
488: fi
489: case "$arg" in
490: -D*|-I*)
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.
494: -arch)
495: eat=yes ;;
496: -*|$object)
497: ;;
498: *)
499: set fnord "$@" "$arg"; shift ;;
500: esac
501: done
502: obj_suffix=`echo "$object" | sed 's/^.*\././'`
503: touch "$tmpdepfile"
504: ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
505: rm -f "$depfile"
506: cat < "$tmpdepfile" > "$depfile"
507: sed '1,2d' "$tmpdepfile" | tr ' ' '
508: ' | \
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
513: ;;
514:
515: cpp)
516: # Important note: in order to support this mode, a compiler *must*
517: # always write the preprocessed file to stdout.
518: "$@" || exit $?
519:
520: # Remove the call to Libtool.
521: if test "$libtool" = yes; then
522: while test "X$1" != 'X--mode=compile'; do
523: shift
524: done
525: shift
526: fi
527:
528: # Remove `-o $object'.
529: IFS=" "
530: for arg
531: do
532: case $arg in
533: -o)
534: shift
535: ;;
536: $object)
537: shift
538: ;;
539: *)
540: set fnord "$@" "$arg"
541: shift # fnord
542: shift # $arg
543: ;;
544: esac
545: done
546:
547: "$@" -E |
548: sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
549: -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
550: sed '$ s: \\$::' > "$tmpdepfile"
551: rm -f "$depfile"
552: echo "$object : \\" > "$depfile"
553: cat < "$tmpdepfile" >> "$depfile"
554: sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
555: rm -f "$tmpdepfile"
556: ;;
557:
558: msvisualcpp)
559: # Important note: in order to support this mode, a compiler *must*
560: # always write the preprocessed file to stdout.
561: "$@" || exit $?
562:
563: # Remove the call to Libtool.
564: if test "$libtool" = yes; then
565: while test "X$1" != 'X--mode=compile'; do
566: shift
567: done
568: shift
569: fi
570:
571: IFS=" "
572: for arg
573: do
574: case "$arg" in
575: -o)
576: shift
577: ;;
578: $object)
579: shift
580: ;;
581: "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
582: set fnord "$@"
583: shift
584: shift
585: ;;
586: *)
587: set fnord "$@" "$arg"
588: shift
589: shift
590: ;;
591: esac
592: done
593: "$@" -E 2>/dev/null |
594: sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
595: rm -f "$depfile"
596: echo "$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"
600: rm -f "$tmpdepfile"
601: ;;
602:
603: msvcmsys)
604: # This case exists only to let depend.m4 do its work. It works by
605: # looking at the text of this script. This case will never be run,
606: # since it is checked for above.
607: exit 1
608: ;;
609:
610: none)
611: exec "$@"
612: ;;
613:
614: *)
615: echo "Unknown depmode $depmode" 1>&2
616: exit 1
617: ;;
618: esac
619:
620: exit 0
621:
622: # Local Variables:
623: # mode: shell-script
624: # sh-indentation: 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"
630: # End:
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