source: trunk/essentials/sys-devel/autoconf/aclocal.m4@ 3846

Last change on this file since 3846 was 3092, checked in by bird, 19 years ago

autoconf 2.61
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1# generated automatically by aclocal 1.10 -*- Autoconf -*-
2
3# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4# 2005, 2006 Free Software Foundation, Inc.
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
14m4_if(m4_PACKAGE_VERSION, [2.61],,
15[m4_fatal([this file was generated for autoconf 2.61.
16You have another version of autoconf. If you want to use that,
17you should regenerate the build system entirely.], [63])])
18
19# Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
20#
21# This file is free software; the Free Software Foundation
22# gives unlimited permission to copy and/or distribute it,
23# with or without modifications, as long as this notice is preserved.
24
25# AM_AUTOMAKE_VERSION(VERSION)
26# ----------------------------
27# Automake X.Y traces this macro to ensure aclocal.m4 has been
28# generated from the m4 files accompanying Automake X.Y.
29# (This private macro should not be called outside this file.)
30AC_DEFUN([AM_AUTOMAKE_VERSION],
31[am__api_version='1.10'
32dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
33dnl require some minimum version. Point them to the right macro.
34m4_if([$1], [1.10], [],
35 [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
36])
37
38# _AM_AUTOCONF_VERSION(VERSION)
39# -----------------------------
40# aclocal traces this macro to find the Autoconf version.
41# This is a private macro too. Using m4_define simplifies
42# the logic in aclocal, which can simply ignore this definition.
43m4_define([_AM_AUTOCONF_VERSION], [])
44
45# AM_SET_CURRENT_AUTOMAKE_VERSION
46# -------------------------------
47# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
48# This function is AC_REQUIREd by AC_INIT_AUTOMAKE.
49AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
50[AM_AUTOMAKE_VERSION([1.10])dnl
51_AM_AUTOCONF_VERSION(m4_PACKAGE_VERSION)])
52
53# AM_AUX_DIR_EXPAND -*- Autoconf -*-
54
55# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
56#
57# This file is free software; the Free Software Foundation
58# gives unlimited permission to copy and/or distribute it,
59# with or without modifications, as long as this notice is preserved.
60
61# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
62# $ac_aux_dir to `$srcdir/foo'. In other projects, it is set to
63# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
64#
65# Of course, Automake must honor this variable whenever it calls a
66# tool from the auxiliary directory. The problem is that $srcdir (and
67# therefore $ac_aux_dir as well) can be either absolute or relative,
68# depending on how configure is run. This is pretty annoying, since
69# it makes $ac_aux_dir quite unusable in subdirectories: in the top
70# source directory, any form will work fine, but in subdirectories a
71# relative path needs to be adjusted first.
72#
73# $ac_aux_dir/missing
74# fails when called from a subdirectory if $ac_aux_dir is relative
75# $top_srcdir/$ac_aux_dir/missing
76# fails if $ac_aux_dir is absolute,
77# fails when called from a subdirectory in a VPATH build with
78# a relative $ac_aux_dir
79#
80# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
81# are both prefixed by $srcdir. In an in-source build this is usually
82# harmless because $srcdir is `.', but things will broke when you
83# start a VPATH build or use an absolute $srcdir.
84#
85# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
86# iff we strip the leading $srcdir from $ac_aux_dir. That would be:
87# am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
88# and then we would define $MISSING as
89# MISSING="\${SHELL} $am_aux_dir/missing"
90# This will work as long as MISSING is not called from configure, because
91# unfortunately $(top_srcdir) has no meaning in configure.
92# However there are other variables, like CC, which are often used in
93# configure, and could therefore not use this "fixed" $ac_aux_dir.
94#
95# Another solution, used here, is to always expand $ac_aux_dir to an
96# absolute PATH. The drawback is that using absolute paths prevent a
97# configured tree to be moved without reconfiguration.
98
99AC_DEFUN([AM_AUX_DIR_EXPAND],
100[dnl Rely on autoconf to set up CDPATH properly.
101AC_PREREQ([2.50])dnl
102# expand $ac_aux_dir to an absolute path
103am_aux_dir=`cd $ac_aux_dir && pwd`
104])
105
106# Do all the work for Automake. -*- Autoconf -*-
107
108# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
109# 2005, 2006 Free Software Foundation, Inc.
110#
111# This file is free software; the Free Software Foundation
112# gives unlimited permission to copy and/or distribute it,
113# with or without modifications, as long as this notice is preserved.
114
115# serial 12
116
117# This macro actually does too much. Some checks are only needed if
118# your package does certain things. But this isn't really a big deal.
119
120# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
121# AM_INIT_AUTOMAKE([OPTIONS])
122# -----------------------------------------------
123# The call with PACKAGE and VERSION arguments is the old style
124# call (pre autoconf-2.50), which is being phased out. PACKAGE
125# and VERSION should now be passed to AC_INIT and removed from
126# the call to AM_INIT_AUTOMAKE.
127# We support both call styles for the transition. After
128# the next Automake release, Autoconf can make the AC_INIT
129# arguments mandatory, and then we can depend on a new Autoconf
130# release and drop the old call support.
131AC_DEFUN([AM_INIT_AUTOMAKE],
132[AC_PREREQ([2.60])dnl
133dnl Autoconf wants to disallow AM_ names. We explicitly allow
134dnl the ones we care about.
135m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
136AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
137AC_REQUIRE([AC_PROG_INSTALL])dnl
138if test "`cd $srcdir && pwd`" != "`pwd`"; then
139 # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
140 # is not polluted with repeated "-I."
141 AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
142 # test to see if srcdir already configured
143 if test -f $srcdir/config.status; then
144 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
145 fi
146fi
147
148# test whether we have cygpath
149if test -z "$CYGPATH_W"; then
150 if (cygpath --version) >/dev/null 2>/dev/null; then
151 CYGPATH_W='cygpath -w'
152 else
153 CYGPATH_W=echo
154 fi
155fi
156AC_SUBST([CYGPATH_W])
157
158# Define the identity of the package.
159dnl Distinguish between old-style and new-style calls.
160m4_ifval([$2],
161[m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
162 AC_SUBST([PACKAGE], [$1])dnl
163 AC_SUBST([VERSION], [$2])],
164[_AM_SET_OPTIONS([$1])dnl
165dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
166m4_if(m4_ifdef([AC_PACKAGE_NAME], 1)m4_ifdef([AC_PACKAGE_VERSION], 1), 11,,
167 [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
168 AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
169 AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
170
171_AM_IF_OPTION([no-define],,
172[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
173 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl
174
175# Some tools Automake needs.
176AC_REQUIRE([AM_SANITY_CHECK])dnl
177AC_REQUIRE([AC_ARG_PROGRAM])dnl
178AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
179AM_MISSING_PROG(AUTOCONF, autoconf)
180AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
181AM_MISSING_PROG(AUTOHEADER, autoheader)
182AM_MISSING_PROG(MAKEINFO, makeinfo)
183AM_PROG_INSTALL_SH
184AM_PROG_INSTALL_STRIP
185AC_REQUIRE([AM_PROG_MKDIR_P])dnl
186# We need awk for the "check" target. The system "awk" is bad on
187# some platforms.
188AC_REQUIRE([AC_PROG_AWK])dnl
189AC_REQUIRE([AC_PROG_MAKE_SET])dnl
190AC_REQUIRE([AM_SET_LEADING_DOT])dnl
191_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
192 [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
193 [_AM_PROG_TAR([v7])])])
194_AM_IF_OPTION([no-dependencies],,
195[AC_PROVIDE_IFELSE([AC_PROG_CC],
196 [_AM_DEPENDENCIES(CC)],
197 [define([AC_PROG_CC],
198 defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
199AC_PROVIDE_IFELSE([AC_PROG_CXX],
200 [_AM_DEPENDENCIES(CXX)],
201 [define([AC_PROG_CXX],
202 defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
203AC_PROVIDE_IFELSE([AC_PROG_OBJC],
204 [_AM_DEPENDENCIES(OBJC)],
205 [define([AC_PROG_OBJC],
206 defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl
207])
208])
209
210
211# When config.status generates a header, we must update the stamp-h file.
212# This file resides in the same directory as the config header
213# that is generated. The stamp files are numbered to have different names.
214
215# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
216# loop where config.status creates the headers, so we can generate
217# our stamp files there.
218AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
219[# Compute $1's index in $config_headers.
220_am_stamp_count=1
221for _am_header in $config_headers :; do
222 case $_am_header in
223 $1 | $1:* )
224 break ;;
225 * )
226 _am_stamp_count=`expr $_am_stamp_count + 1` ;;
227 esac
228done
229echo "timestamp for $1" >`AS_DIRNAME([$1])`/stamp-h[]$_am_stamp_count])
230
231# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
232#
233# This file is free software; the Free Software Foundation
234# gives unlimited permission to copy and/or distribute it,
235# with or without modifications, as long as this notice is preserved.
236
237# AM_PROG_INSTALL_SH
238# ------------------
239# Define $install_sh.
240AC_DEFUN([AM_PROG_INSTALL_SH],
241[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
242install_sh=${install_sh-"\$(SHELL) $am_aux_dir/install-sh"}
243AC_SUBST(install_sh)])
244
245# Copyright (C) 2003, 2005 Free Software Foundation, Inc.
246#
247# This file is free software; the Free Software Foundation
248# gives unlimited permission to copy and/or distribute it,
249# with or without modifications, as long as this notice is preserved.
250
251# serial 2
252
253# Check whether the underlying file-system supports filenames
254# with a leading dot. For instance MS-DOS doesn't.
255AC_DEFUN([AM_SET_LEADING_DOT],
256[rm -rf .tst 2>/dev/null
257mkdir .tst 2>/dev/null
258if test -d .tst; then
259 am__leading_dot=.
260else
261 am__leading_dot=_
262fi
263rmdir .tst 2>/dev/null
264AC_SUBST([am__leading_dot])])
265
266# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
267# 2006 Free Software Foundation, Inc.
268#
269# This file is free software; the Free Software Foundation
270# gives unlimited permission to copy and/or distribute it,
271# with or without modifications, as long as this notice is preserved.
272
273# serial 10
274
275# AM_PATH_LISPDIR
276# ---------------
277AC_DEFUN([AM_PATH_LISPDIR],
278[AC_PREREQ([2.60])dnl
279 # If set to t, that means we are running in a shell under Emacs.
280 # If you have an Emacs named "t", then use the full path.
281 test x"$EMACS" = xt && EMACS=
282 AC_CHECK_PROGS([EMACS], [emacs xemacs], [no])
283 AC_ARG_VAR([EMACS], [the Emacs editor command])
284 AC_ARG_VAR([EMACSLOADPATH], [the Emacs library search path])
285 AC_ARG_WITH([lispdir],
286 [ --with-lispdir override the default lisp directory],
287 [ lispdir="$withval"
288 AC_MSG_CHECKING([where .elc files should go])
289 AC_MSG_RESULT([$lispdir])],
290 [
291 AC_CACHE_CHECK([where .elc files should go], [am_cv_lispdir], [
292 if test $EMACS != "no"; then
293 if test x${lispdir+set} != xset; then
294 # If $EMACS isn't GNU Emacs or XEmacs, this can blow up pretty badly
295 # Some emacsen will start up in interactive mode, requiring C-x C-c to exit,
296 # which is non-obvious for non-emacs users.
297 # Redirecting /dev/null should help a bit; pity we can't detect "broken"
298 # emacsen earlier and avoid running this altogether.
299 AC_RUN_LOG([$EMACS -batch -q -eval '(while load-path (princ (concat (car load-path) "\n")) (setq load-path (cdr load-path)))' </dev/null >conftest.out])
300 am_cv_lispdir=`sed -n \
301 -e 's,/$,,' \
302 -e '/.*\/lib\/x*emacs\/site-lisp$/{s,.*/lib/\(x*emacs/site-lisp\)$,${libdir}/\1,;p;q;}' \
303 -e '/.*\/share\/x*emacs\/site-lisp$/{s,.*/share/\(x*emacs/site-lisp\),${datarootdir}/\1,;p;q;}' \
304 conftest.out`
305 rm conftest.out
306 fi
307 fi
308 test -z "$am_cv_lispdir" && am_cv_lispdir='${datadir}/emacs/site-lisp'
309 ])
310 lispdir="$am_cv_lispdir"
311])
312AC_SUBST([lispdir])
313])# AM_PATH_LISPDIR
314
315AU_DEFUN([ud_PATH_LISPDIR], [AM_PATH_LISPDIR])
316
317# Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
318
319# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005
320# Free Software Foundation, Inc.
321#
322# This file is free software; the Free Software Foundation
323# gives unlimited permission to copy and/or distribute it,
324# with or without modifications, as long as this notice is preserved.
325
326# serial 5
327
328# AM_MISSING_PROG(NAME, PROGRAM)
329# ------------------------------
330AC_DEFUN([AM_MISSING_PROG],
331[AC_REQUIRE([AM_MISSING_HAS_RUN])
332$1=${$1-"${am_missing_run}$2"}
333AC_SUBST($1)])
334
335
336# AM_MISSING_HAS_RUN
337# ------------------
338# Define MISSING if not defined so far and test if it supports --run.
339# If it does, set am_missing_run to use it, otherwise, to nothing.
340AC_DEFUN([AM_MISSING_HAS_RUN],
341[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
342AC_REQUIRE_AUX_FILE([missing])dnl
343test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
344# Use eval to expand $SHELL
345if eval "$MISSING --run true"; then
346 am_missing_run="$MISSING --run "
347else
348 am_missing_run=
349 AC_MSG_WARN([`missing' script is too old or missing])
350fi
351])
352
353# Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
354#
355# This file is free software; the Free Software Foundation
356# gives unlimited permission to copy and/or distribute it,
357# with or without modifications, as long as this notice is preserved.
358
359# AM_PROG_MKDIR_P
360# ---------------
361# Check for `mkdir -p'.
362AC_DEFUN([AM_PROG_MKDIR_P],
363[AC_PREREQ([2.60])dnl
364AC_REQUIRE([AC_PROG_MKDIR_P])dnl
365dnl Automake 1.8 to 1.9.6 used to define mkdir_p. We now use MKDIR_P,
366dnl while keeping a definition of mkdir_p for backward compatibility.
367dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
368dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
369dnl Makefile.ins that do not define MKDIR_P, so we do our own
370dnl adjustment using top_builddir (which is defined more often than
371dnl MKDIR_P).
372AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
373case $mkdir_p in
374 [[\\/$]]* | ?:[[\\/]]*) ;;
375 */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
376esac
377])
378
379# Helper functions for option handling. -*- Autoconf -*-
380
381# Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
382#
383# This file is free software; the Free Software Foundation
384# gives unlimited permission to copy and/or distribute it,
385# with or without modifications, as long as this notice is preserved.
386
387# serial 3
388
389# _AM_MANGLE_OPTION(NAME)
390# -----------------------
391AC_DEFUN([_AM_MANGLE_OPTION],
392[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
393
394# _AM_SET_OPTION(NAME)
395# ------------------------------
396# Set option NAME. Presently that only means defining a flag for this option.
397AC_DEFUN([_AM_SET_OPTION],
398[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
399
400# _AM_SET_OPTIONS(OPTIONS)
401# ----------------------------------
402# OPTIONS is a space-separated list of Automake options.
403AC_DEFUN([_AM_SET_OPTIONS],
404[AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
405
406# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
407# -------------------------------------------
408# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
409AC_DEFUN([_AM_IF_OPTION],
410[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
411
412# Check to make sure that the build environment is sane. -*- Autoconf -*-
413
414# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
415# Free Software Foundation, Inc.
416#
417# This file is free software; the Free Software Foundation
418# gives unlimited permission to copy and/or distribute it,
419# with or without modifications, as long as this notice is preserved.
420
421# serial 4
422
423# AM_SANITY_CHECK
424# ---------------
425AC_DEFUN([AM_SANITY_CHECK],
426[AC_MSG_CHECKING([whether build environment is sane])
427# Just in case
428sleep 1
429echo timestamp > conftest.file
430# Do `set' in a subshell so we don't clobber the current shell's
431# arguments. Must try -L first in case configure is actually a
432# symlink; some systems play weird games with the mod time of symlinks
433# (eg FreeBSD returns the mod time of the symlink's containing
434# directory).
435if (
436 set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
437 if test "$[*]" = "X"; then
438 # -L didn't work.
439 set X `ls -t $srcdir/configure conftest.file`
440 fi
441 rm -f conftest.file
442 if test "$[*]" != "X $srcdir/configure conftest.file" \
443 && test "$[*]" != "X conftest.file $srcdir/configure"; then
444
445 # If neither matched, then we have a broken ls. This can happen
446 # if, for instance, CONFIG_SHELL is bash and it inherits a
447 # broken ls alias from the environment. This has actually
448 # happened. Such a system could not be considered "sane".
449 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
450alias in your environment])
451 fi
452
453 test "$[2]" = conftest.file
454 )
455then
456 # Ok.
457 :
458else
459 AC_MSG_ERROR([newly created file is older than distributed files!
460Check your system clock])
461fi
462AC_MSG_RESULT(yes)])
463
464# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
465#
466# This file is free software; the Free Software Foundation
467# gives unlimited permission to copy and/or distribute it,
468# with or without modifications, as long as this notice is preserved.
469
470# AM_PROG_INSTALL_STRIP
471# ---------------------
472# One issue with vendor `install' (even GNU) is that you can't
473# specify the program used to strip binaries. This is especially
474# annoying in cross-compiling environments, where the build's strip
475# is unlikely to handle the host's binaries.
476# Fortunately install-sh will honor a STRIPPROG variable, so we
477# always use install-sh in `make install-strip', and initialize
478# STRIPPROG with the value of the STRIP variable (set by the user).
479AC_DEFUN([AM_PROG_INSTALL_STRIP],
480[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
481# Installed binaries are usually stripped using `strip' when the user
482# run `make install-strip'. However `strip' might not be the right
483# tool to use in cross-compilation environments, therefore Automake
484# will honor the `STRIP' environment variable to overrule this program.
485dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
486if test "$cross_compiling" != no; then
487 AC_CHECK_TOOL([STRIP], [strip], :)
488fi
489INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
490AC_SUBST([INSTALL_STRIP_PROGRAM])])
491
492# Copyright (C) 2006 Free Software Foundation, Inc.
493#
494# This file is free software; the Free Software Foundation
495# gives unlimited permission to copy and/or distribute it,
496# with or without modifications, as long as this notice is preserved.
497
498# _AM_SUBST_NOTMAKE(VARIABLE)
499# ---------------------------
500# Prevent Automake from outputing VARIABLE = @VARIABLE@ in Makefile.in.
501# This macro is traced by Automake.
502AC_DEFUN([_AM_SUBST_NOTMAKE])
503
504# Check how to create a tarball. -*- Autoconf -*-
505
506# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
507#
508# This file is free software; the Free Software Foundation
509# gives unlimited permission to copy and/or distribute it,
510# with or without modifications, as long as this notice is preserved.
511
512# serial 2
513
514# _AM_PROG_TAR(FORMAT)
515# --------------------
516# Check how to create a tarball in format FORMAT.
517# FORMAT should be one of `v7', `ustar', or `pax'.
518#
519# Substitute a variable $(am__tar) that is a command
520# writing to stdout a FORMAT-tarball containing the directory
521# $tardir.
522# tardir=directory && $(am__tar) > result.tar
523#
524# Substitute a variable $(am__untar) that extract such
525# a tarball read from stdin.
526# $(am__untar) < result.tar
527AC_DEFUN([_AM_PROG_TAR],
528[# Always define AMTAR for backward compatibility.
529AM_MISSING_PROG([AMTAR], [tar])
530m4_if([$1], [v7],
531 [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
532 [m4_case([$1], [ustar],, [pax],,
533 [m4_fatal([Unknown tar format])])
534AC_MSG_CHECKING([how to create a $1 tar archive])
535# Loop over all known methods to create a tar archive until one works.
536_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
537_am_tools=${am_cv_prog_tar_$1-$_am_tools}
538# Do not fold the above two line into one, because Tru64 sh and
539# Solaris sh will not grok spaces in the rhs of `-'.
540for _am_tool in $_am_tools
541do
542 case $_am_tool in
543 gnutar)
544 for _am_tar in tar gnutar gtar;
545 do
546 AM_RUN_LOG([$_am_tar --version]) && break
547 done
548 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
549 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
550 am__untar="$_am_tar -xf -"
551 ;;
552 plaintar)
553 # Must skip GNU tar: if it does not support --format= it doesn't create
554 # ustar tarball either.
555 (tar --version) >/dev/null 2>&1 && continue
556 am__tar='tar chf - "$$tardir"'
557 am__tar_='tar chf - "$tardir"'
558 am__untar='tar xf -'
559 ;;
560 pax)
561 am__tar='pax -L -x $1 -w "$$tardir"'
562 am__tar_='pax -L -x $1 -w "$tardir"'
563 am__untar='pax -r'
564 ;;
565 cpio)
566 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
567 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
568 am__untar='cpio -i -H $1 -d'
569 ;;
570 none)
571 am__tar=false
572 am__tar_=false
573 am__untar=false
574 ;;
575 esac
576
577 # If the value was cached, stop now. We just wanted to have am__tar
578 # and am__untar set.
579 test -n "${am_cv_prog_tar_$1}" && break
580
581 # tar/untar a dummy directory, and stop if the command works
582 rm -rf conftest.dir
583 mkdir conftest.dir
584 echo GrepMe > conftest.dir/file
585 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
586 rm -rf conftest.dir
587 if test -s conftest.tar; then
588 AM_RUN_LOG([$am__untar <conftest.tar])
589 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
590 fi
591done
592rm -rf conftest.dir
593
594AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
595AC_MSG_RESULT([$am_cv_prog_tar_$1])])
596AC_SUBST([am__tar])
597AC_SUBST([am__untar])
598]) # _AM_PROG_TAR
599
600m4_include([m4/m4.m4])
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