1 # This file is part of Autoconf. -*- Autoconf -*-
2 # Parameterized macros.
3 m4_define([_AC_COPYRIGHT_YEARS], [
4 Copyright (C) 1992-1996, 1998-2017 Free Software Foundation, Inc.
7 # This file is part of Autoconf. This program is free
8 # software; you can redistribute it and/or modify it under the
9 # terms of the GNU General Public License as published by the
10 # Free Software Foundation, either version 3 of the License, or
11 # (at your option) any later version.
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 # Under Section 7 of GPL version 3, you are granted additional
19 # permissions described in the Autoconf Configure Script Exception,
20 # version 3.0, as published by the Free Software Foundation.
22 # You should have received a copy of the GNU General Public License
23 # and a copy of the Autoconf Configure Script Exception along with
24 # this program; see the files COPYINGv3 and COPYING.EXCEPTION
25 # respectively. If not, see <https://www.gnu.org/licenses/>.
27 # Written by David MacKenzie, with help from
28 # Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
29 # Roland McGrath, Noah Friedman, david d zuhn, and many others.
32 ## ---------------- ##
34 ## ---------------- ##
37 # We heavily use m4's diversions both for the initializations and for
38 # required macros (see AC_REQUIRE), because in both cases we have to
39 # issue high in `configure' something which is discovered late.
41 # KILL is only used to suppress output.
43 # The layers of `configure'. We let m4 undivert them by itself, when
44 # it reaches the end of `configure.ac'.
51 # Purpose of the script.
55 # Initialization of bottom layers.
58 # early initializations (defaults)
60 # initialization code, option handling loop.
63 # Handling `configure --help'.
65 # Help msg for AC_CANONICAL_*
67 # Help msg from AC_ARG_ENABLE.
69 # Help msg from AC_ARG_WITH.
71 # Help msg from AC_ARG_VAR.
73 # A small paragraph on the use of the variables.
75 # Tail of the handling of --help.
78 # Head of the handling of --version.
80 # FSF copyright notice for --version.
82 # User copyright notice for --version.
84 # Tail of the handling of --version.
90 # Tail of initialization code.
93 # the tests and output code
97 # _m4_divert(DIVERSION-NAME)
98 # --------------------------
99 # Convert a diversion name into its number. Otherwise, return
100 # DIVERSION-NAME which is supposed to be an actual diversion number.
101 # Of course it would be nicer to use m4_case here, instead of zillions
102 # of little macros, but it then takes twice longer to run `autoconf'!
112 # 3. HEADER-COPYRIGHT
115 m4_define([_m4_divert(DEFAULTS)], 10)
116 m4_define([_m4_divert(PARSE_ARGS)], 20)
118 m4_define([_m4_divert(HELP_BEGIN)], 100)
119 m4_define([_m4_divert(HELP_CANON)], 101)
120 m4_define([_m4_divert(HELP_ENABLE)], 102)
121 m4_define([_m4_divert(HELP_WITH)], 103)
122 m4_define([_m4_divert(HELP_VAR)], 104)
123 m4_define([_m4_divert(HELP_VAR_END)], 105)
124 m4_define([_m4_divert(HELP_END)], 106)
126 m4_define([_m4_divert(VERSION_BEGIN)], 200)
127 m4_define([_m4_divert(VERSION_FSF)], 201)
128 m4_define([_m4_divert(VERSION_USER)], 202)
129 m4_define([_m4_divert(VERSION_END)], 203)
131 m4_define([_m4_divert(SHELL_FN)], 250)
133 m4_define([_m4_divert(INIT_PREPARE)], 300)
137 # AC_DIVERT_PUSH(DIVERSION-NAME)
139 # ------------------------------
140 m4_copy([m4_divert_push],[AC_DIVERT_PUSH])
141 m4_copy([m4_divert_pop], [AC_DIVERT_POP])
145 ## ------------------------------------ ##
146 ## Defining/requiring Autoconf macros. ##
147 ## ------------------------------------ ##
150 # AC_DEFUN(NAME, EXPANSION)
151 # AC_DEFUN_ONCE(NAME, EXPANSION)
152 # AC_BEFORE(THIS-MACRO-NAME, CALLED-MACRO-NAME)
154 # AC_PROVIDE(MACRO-NAME)
155 # AC_PROVIDE_IFELSE(MACRO-NAME, IF-PROVIDED, IF-NOT-PROVIDED)
156 # -----------------------------------------------------------
157 m4_copy([m4_defun], [AC_DEFUN])
158 m4_copy([m4_defun_once], [AC_DEFUN_ONCE])
159 m4_copy([m4_before], [AC_BEFORE])
160 m4_copy([m4_require], [AC_REQUIRE])
161 m4_copy([m4_provide], [AC_PROVIDE])
162 m4_copy([m4_provide_if], [AC_PROVIDE_IFELSE])
165 # AC_OBSOLETE(THIS-MACRO-NAME, [SUGGESTION])
166 # ------------------------------------------
167 m4_define([AC_OBSOLETE],
168 [AC_DIAGNOSE([obsolete], [$1 is obsolete$2])])
172 ## ----------------------------- ##
173 ## Implementing shell functions. ##
174 ## ----------------------------- ##
177 # AC_REQUIRE_SHELL_FN(NAME-TO-CHECK, COMMENT, BODY, [DIVERSION = SHELL_FN]
178 # ------------------------------------------------------------------------
179 # Same as AS_REQUIRE_SHELL_FN except that the default diversion comes
180 # later in the script (speeding up configure --help and --version).
181 AC_DEFUN([AC_REQUIRE_SHELL_FN],
182 [AS_REQUIRE_SHELL_FN([$1], [$2], [$3], m4_default_quoted([$4], [SHELL_FN]))])
186 ## ----------------------------- ##
187 ## Implementing Autoconf loops. ##
188 ## ----------------------------- ##
191 # AU::AC_FOREACH(VARIABLE, LIST, EXPRESSION)
192 # ------------------------------------------
193 AU_DEFUN([AC_FOREACH], [[m4_foreach_w($@)]])
194 AC_DEFUN([AC_FOREACH], [m4_foreach_w($@)dnl
195 AC_DIAGNOSE([obsolete], [The macro `AC_FOREACH' is obsolete.
196 You should run autoupdate.])])
200 ## ----------------------------------- ##
201 ## Helping macros to display strings. ##
202 ## ----------------------------------- ##
205 # AU::AC_HELP_STRING(LHS, RHS, [COLUMN])
206 # --------------------------------------
207 AU_ALIAS([AC_HELP_STRING], [AS_HELP_STRING])
211 ## ---------------------------------------------- ##
212 ## Information on the package being Autoconf'ed. ##
213 ## ---------------------------------------------- ##
216 # It is suggested that the macros in this section appear before
217 # AC_INIT in `configure.ac'. Nevertheless, this is just stylistic,
218 # and from the implementation point of view, AC_INIT *must* be expanded
219 # beforehand: it puts data in diversions which must appear before the
220 # data provided by the macros of this section.
222 # The solution is to require AC_INIT in each of these macros. AC_INIT
223 # has the needed magic so that it can't be expanded twice.
225 # _AC_INIT_LITERAL(STRING)
226 # ------------------------
227 # Reject STRING if it contains newline, or if it cannot be used as-is
228 # in single-quoted strings, double-quoted strings, and quoted and
229 # unquoted here-docs.
230 m4_define([_AC_INIT_LITERAL],
231 [m4_if(m4_index(m4_translit([[$1]], [
232 ""], ['']), ['])AS_LITERAL_HEREDOC_IF([$1], [-]), [-1-], [],
233 [m4_warn([syntax], [AC_INIT: not a literal: $1])])])
235 # _AC_INIT_PACKAGE(PACKAGE-NAME, VERSION, BUG-REPORT, [TARNAME], [URL])
236 # ---------------------------------------------------------------------
237 m4_define([_AC_INIT_PACKAGE],
238 [_AC_INIT_LITERAL([$1])
239 _AC_INIT_LITERAL([$2])
240 _AC_INIT_LITERAL([$3])
241 m4_ifndef([AC_PACKAGE_NAME],
242 [m4_define([AC_PACKAGE_NAME], [$1])])
243 m4_ifndef([AC_PACKAGE_TARNAME],
244 [m4_define([AC_PACKAGE_TARNAME],
246 [m4_bpatsubst(m4_tolower(m4_bpatsubst([[$1]],
248 [[^_abcdefghijklmnopqrstuvwxyz0123456789]],
250 m4_ifndef([AC_PACKAGE_VERSION],
251 [m4_define([AC_PACKAGE_VERSION], [$2])])
252 m4_ifndef([AC_PACKAGE_STRING],
253 [m4_define([AC_PACKAGE_STRING], [$1 $2])])
254 m4_ifndef([AC_PACKAGE_BUGREPORT],
255 [m4_define([AC_PACKAGE_BUGREPORT], [$3])])
256 m4_ifndef([AC_PACKAGE_URL],
257 [m4_define([AC_PACKAGE_URL],
258 m4_if([$5], [], [m4_if(m4_index([$1], [GNU ]), [0],
259 [[https://www.gnu.org/software/]m4_defn([AC_PACKAGE_TARNAME])[/]])],
264 # AC_COPYRIGHT(TEXT, [VERSION-DIVERSION = VERSION_USER],
265 # [FILTER = m4_newline])
266 # ------------------------------------------------------
267 # Emit TEXT, a copyright notice, in the top of `configure' and in
268 # --version output. Macros in TEXT are evaluated once. Process
269 # the --version output through FILTER (m4_newline, m4_do, and
270 # m4_copyright_condense are common filters).
271 m4_define([AC_COPYRIGHT],
272 [AS_COPYRIGHT([$1])[]]dnl
273 [m4_divert_text(m4_default_quoted([$2], [VERSION_USER]),
274 [m4_default([$3], [m4_newline])([$1])])])# AC_COPYRIGHT
277 # AC_REVISION(REVISION-INFO)
278 # --------------------------
279 # The second quote in the translit is just to cope with font-lock-mode
280 # which sees the opening of a string.
281 m4_define([AC_REVISION],
282 [m4_divert_text([HEADER-REVISION],
283 [@%:@ From __file__ m4_translit([$1], [$""]).])dnl
289 ## ---------------------------------------- ##
290 ## Requirements over the Autoconf version. ##
291 ## ---------------------------------------- ##
294 # AU::AC_PREREQ(VERSION)
295 # ----------------------
296 # Update this `AC_PREREQ' statement to require the current version of
297 # Autoconf. But fail if ever this autoupdate is too old.
299 # Note that `m4_defn([m4_PACKAGE_VERSION])' below are expanded before
300 # calling `AU_DEFUN', i.e., it is hard coded. Otherwise it would be
301 # quite complex for autoupdate to import the value of
302 # `m4_PACKAGE_VERSION'. We could `AU_DEFUN' `m4_PACKAGE_VERSION', but
303 # this would replace all its occurrences with the current version of
304 # Autoconf, which is certainly not what the user intended.
305 AU_DEFUN([AC_PREREQ],
306 [m4_version_prereq([$1])[]dnl
307 [AC_PREREQ(]]m4_dquote(m4_dquote(m4_defn([m4_PACKAGE_VERSION])))[[)]])
312 # Complain and exit if the Autoconf version is less than VERSION.
313 m4_undefine([AC_PREREQ])
314 m4_copy([m4_version_prereq], [AC_PREREQ])
317 # AC_AUTOCONF_VERSION
318 # -------------------
319 # The current version of Autoconf parsing this file.
320 m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])
326 ## ---------------- ##
327 ## Initialization. ##
328 ## ---------------- ##
331 # All the following macros are used by AC_INIT. Ideally, they should
332 # be presented in the order in which they are output. Please, help us
333 # sorting it, or at least, don't augment the entropy.
338 # Provide useful headers; override the HEADER-COMMENT created by M4sh.
339 m4_define([_AC_INIT_NOTICE],
340 [m4_cleardivert([HEADER-COMMENT])]dnl
341 [m4_divert_text([HEADER-COMMENT],
342 [@%:@ Guess values for system-dependent variables and create Makefiles.
343 @%:@ Generated by m4_PACKAGE_STRING[]dnl
344 m4_ifset([AC_PACKAGE_STRING], [ for AC_PACKAGE_STRING]).])
346 m4_ifset([AC_PACKAGE_BUGREPORT],
347 [m4_divert_text([HEADER-COMMENT],
349 @%:@ Report bugs to <AC_PACKAGE_BUGREPORT>.])])
355 # We dump to VERSION_FSF to make sure we are inserted before the
356 # user copyrights, and after the setup of the --version handling.
357 m4_define([_AC_INIT_COPYRIGHT],
358 [AC_COPYRIGHT(m4_defn([_AC_COPYRIGHT_YEARS]), [VERSION_FSF], [
359 m4_copyright_condense])dnl
361 [This configure script is free software; the Free Software Foundation
362 gives unlimited permission to copy, distribute and modify it.],
363 [VERSION_FSF], [m4_echo])])
368 # Set up the file descriptors used by `configure'.
369 # File descriptor usage:
370 # 0 standard input (/dev/null)
372 # 2 errors and warnings
373 # AS_MESSAGE_LOG_FD compiler messages saved in config.log
374 # AS_MESSAGE_FD checking for... messages and results
375 # AS_ORIGINAL_STDIN_FD original standard input (still open)
377 # stdin is /dev/null because checks that run programs may
378 # inadvertently run interactive ones, which would stop configuration
379 # until someone typed an EOF.
380 m4_define([AS_MESSAGE_FD], 6)
381 m4_define([AS_ORIGINAL_STDIN_FD], 7)
382 # That's how they used to be named.
383 AU_ALIAS([AC_FD_CC], [AS_MESSAGE_LOG_FD])
384 AU_ALIAS([AC_FD_MSG], [AS_MESSAGE_FD])
389 # Values which defaults can be set from `configure.ac'.
390 # `/bin/machine' is used in `glibcbug'. The others are used in config.*
391 m4_define([_AC_INIT_DEFAULTS],
392 [m4_divert_push([DEFAULTS])dnl
394 test -n "$DJDIR" || exec AS_ORIGINAL_STDIN_FD<&0 </dev/null
395 exec AS_MESSAGE_FD>&1
398 # hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
399 # so uname gets run too.
400 ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
405 ac_default_prefix=/usr/local
407 ac_config_libobj_dir=.
414 AC_SUBST([PATH_SEPARATOR])dnl
416 # Identity of this package.
417 AC_SUBST([PACKAGE_NAME],
418 [m4_ifdef([AC_PACKAGE_NAME], ['AC_PACKAGE_NAME'])])dnl
419 AC_SUBST([PACKAGE_TARNAME],
420 [m4_ifdef([AC_PACKAGE_TARNAME], ['AC_PACKAGE_TARNAME'])])dnl
421 AC_SUBST([PACKAGE_VERSION],
422 [m4_ifdef([AC_PACKAGE_VERSION], ['AC_PACKAGE_VERSION'])])dnl
423 AC_SUBST([PACKAGE_STRING],
424 [m4_ifdef([AC_PACKAGE_STRING], ['AC_PACKAGE_STRING'])])dnl
425 AC_SUBST([PACKAGE_BUGREPORT],
426 [m4_ifdef([AC_PACKAGE_BUGREPORT], ['AC_PACKAGE_BUGREPORT'])])dnl
427 AC_SUBST([PACKAGE_URL],
428 [m4_ifdef([AC_PACKAGE_URL], ['AC_PACKAGE_URL'])])dnl
430 m4_divert_pop([DEFAULTS])dnl
431 m4_wrap_lifo([m4_divert_text([DEFAULTS],
432 [ac_subst_vars='m4_set_dump([_AC_SUBST_VARS], m4_newline)'
433 ac_subst_files='m4_ifdef([_AC_SUBST_FILES], [m4_defn([_AC_SUBST_FILES])])'
435 enable_option_checking
436 m4_ifdef([_AC_USER_OPTS], [m4_defn([_AC_USER_OPTS])
438 m4_ifdef([_AC_PRECIOUS_VARS],
439 [_AC_ARG_VAR_STORE[]dnl
440 _AC_ARG_VAR_VALIDATE[]dnl
441 ac_precious_vars='m4_defn([_AC_PRECIOUS_VARS])'])
442 m4_ifdef([_AC_LIST_SUBDIRS],
443 [ac_subdirs_all='m4_defn([_AC_LIST_SUBDIRS])'])dnl
445 ])# _AC_INIT_DEFAULTS
448 # AC_PREFIX_DEFAULT(PREFIX)
449 # -------------------------
450 AC_DEFUN([AC_PREFIX_DEFAULT],
451 [m4_divert_text([DEFAULTS], [ac_default_prefix=$1])])
454 # AC_PREFIX_PROGRAM(PROGRAM)
455 # --------------------------
456 # Guess the value for the `prefix' variable by looking for
457 # the argument program along PATH and taking its parent.
458 # Example: if the argument is `gcc' and we find /usr/local/gnu/bin/gcc,
459 # set `prefix' to /usr/local/gnu.
460 # This comes too late to find a site file based on the prefix,
461 # and it might use a cached value for the path.
462 # No big loss, I think, since most configures don't use this macro anyway.
463 AC_DEFUN([AC_PREFIX_PROGRAM],
464 [if test "x$prefix" = xNONE; then
465 dnl We reimplement AC_MSG_CHECKING (mostly) to avoid the ... in the middle.
466 _AS_ECHO_N([checking for prefix by ])
467 AC_PATH_PROG(ac_prefix_program, [$1])
468 if test -n "$ac_prefix_program"; then
469 prefix=`AS_DIRNAME(["$ac_prefix_program"])`
470 prefix=`AS_DIRNAME(["$prefix"])`
473 ])# AC_PREFIX_PROGRAM
476 # AC_CONFIG_SRCDIR([UNIQUE-FILE-IN-SOURCE-DIR])
477 # ---------------------------------------------
478 # UNIQUE-FILE-IN-SOURCE-DIR is a file name unique to this package,
479 # relative to the directory that configure is in, which we can look
480 # for to find out if srcdir is correct.
481 AC_DEFUN([AC_CONFIG_SRCDIR],
482 [m4_divert_text([DEFAULTS], [ac_unique_file="$1"])])
487 # Set ac_pwd, and sanity-check it and the source and installation directories.
489 # (This macro is AC_REQUIREd by _AC_INIT_SRCDIR, so it has to be AC_DEFUNed.)
491 AC_DEFUN([_AC_INIT_DIRCHECK],
492 [m4_divert_push([PARSE_ARGS])dnl
494 ac_pwd=`pwd` && test -n "$ac_pwd" &&
495 ac_ls_di=`ls -di .` &&
496 ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
497 AC_MSG_ERROR([working directory cannot be determined])
498 test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
499 AC_MSG_ERROR([pwd does not report name of working directory])
501 m4_divert_pop([PARSE_ARGS])dnl
502 ])# _AC_INIT_DIRCHECK
506 # Compute `srcdir' based on `$ac_unique_file'.
508 # (We have to AC_DEFUN it, since we use AC_REQUIRE.)
510 AC_DEFUN([_AC_INIT_SRCDIR],
511 [AC_REQUIRE([_AC_INIT_DIRCHECK])dnl
512 m4_divert_push([PARSE_ARGS])dnl
514 # Find the source files, if location was not specified.
515 if test -z "$srcdir"; then
516 ac_srcdir_defaulted=yes
517 # Try the directory containing this script, then the parent directory.
518 ac_confdir=`AS_DIRNAME(["$as_myself"])`
520 if test ! -r "$srcdir/$ac_unique_file"; then
524 ac_srcdir_defaulted=no
526 if test ! -r "$srcdir/$ac_unique_file"; then
527 test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
528 AC_MSG_ERROR([cannot find sources ($ac_unique_file) in $srcdir])
530 ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
532 cd "$srcdir" && test -r "./$ac_unique_file" || AC_MSG_ERROR([$ac_msg])
534 # When building in place, set srcdir=.
535 if test "$ac_abs_confdir" = "$ac_pwd"; then
538 # Remove unnecessary trailing slashes from srcdir.
539 # Double slashes in file names in object file debugging info
540 # mess up M-x gdb in Emacs.
542 */) srcdir=`expr "X$srcdir" : 'X\(.*[[^/]]\)' \| "X$srcdir" : 'X\(.*\)'`;;
544 m4_divert_pop([PARSE_ARGS])dnl
548 # _AC_INIT_PARSE_ARGS
549 # -------------------
550 m4_define([_AC_INIT_PARSE_ARGS],
551 [m4_divert_push([PARSE_ARGS])dnl
553 # Initialize some variables set by options.
555 ac_init_version=false
556 ac_unrecognized_opts=
558 # The variables have the same names as the options, with
559 # dashes changed to underlines.
561 AC_SUBST(exec_prefix, NONE)dnl
564 AC_SUBST(prefix, NONE)dnl
567 AC_SUBST(program_transform_name, [s,x,x,])dnl
575 # Installation directory options.
576 # These are left unexpanded so users can "make install exec_prefix=/foo"
577 # and all the variables that are supposed to be based on exec_prefix
578 # by default will actually change.
579 # Use braces instead of parens because sh, perl, etc. also accept them.
580 # (The list follows the same order as the GNU Coding Standards.)
581 AC_SUBST([bindir], ['${exec_prefix}/bin'])dnl
582 AC_SUBST([sbindir], ['${exec_prefix}/sbin'])dnl
583 AC_SUBST([libexecdir], ['${exec_prefix}/libexec'])dnl
584 AC_SUBST([datarootdir], ['${prefix}/share'])dnl
585 AC_SUBST([datadir], ['${datarootdir}'])dnl
586 AC_SUBST([sysconfdir], ['${prefix}/etc'])dnl
587 AC_SUBST([sharedstatedir], ['${prefix}/com'])dnl
588 AC_SUBST([localstatedir], ['${prefix}/var'])dnl
589 AC_SUBST([runstatedir], ['${localstatedir}/run'])dnl
590 AC_SUBST([includedir], ['${prefix}/include'])dnl
591 AC_SUBST([oldincludedir], ['/usr/include'])dnl
592 AC_SUBST([docdir], [m4_ifset([AC_PACKAGE_TARNAME],
593 ['${datarootdir}/doc/${PACKAGE_TARNAME}'],
594 ['${datarootdir}/doc/${PACKAGE}'])])dnl
595 AC_SUBST([infodir], ['${datarootdir}/info'])dnl
596 AC_SUBST([htmldir], ['${docdir}'])dnl
597 AC_SUBST([dvidir], ['${docdir}'])dnl
598 AC_SUBST([pdfdir], ['${docdir}'])dnl
599 AC_SUBST([psdir], ['${docdir}'])dnl
600 AC_SUBST([libdir], ['${exec_prefix}/lib'])dnl
601 AC_SUBST([localedir], ['${datarootdir}/locale'])dnl
602 AC_SUBST([mandir], ['${datarootdir}/man'])dnl
608 # If the previous option needs an argument, assign it.
609 if test -n "$ac_prev"; then
610 eval $ac_prev=\$ac_option
616 *=?*) ac_optarg=`expr "X$ac_option" : '[[^=]]*=\(.*\)'` ;;
621 # Accept the important Cygnus configure options, so we can diagnose typos.
623 case $ac_dashdash$ac_option in
627 -bindir | --bindir | --bindi | --bind | --bin | --bi)
629 -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
632 -build | --build | --buil | --bui | --bu)
633 ac_prev=build_alias ;;
634 -build=* | --build=* | --buil=* | --bui=* | --bu=*)
635 build_alias=$ac_optarg ;;
637 -cache-file | --cache-file | --cache-fil | --cache-fi \
638 | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
639 ac_prev=cache_file ;;
640 -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
641 | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
642 cache_file=$ac_optarg ;;
645 cache_file=config.cache ;;
647 -datadir | --datadir | --datadi | --datad)
649 -datadir=* | --datadir=* | --datadi=* | --datad=*)
650 datadir=$ac_optarg ;;
652 -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
653 | --dataroo | --dataro | --datar)
654 ac_prev=datarootdir ;;
655 -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
656 | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
657 datarootdir=$ac_optarg ;;
659 _AC_INIT_PARSE_ENABLE([disable])
661 -docdir | --docdir | --docdi | --doc | --do)
663 -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
666 -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
668 -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
671 _AC_INIT_PARSE_ENABLE([enable])
673 -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
674 | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
675 | --exec | --exe | --ex)
676 ac_prev=exec_prefix ;;
677 -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
678 | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
679 | --exec=* | --exe=* | --ex=*)
680 exec_prefix=$ac_optarg ;;
682 -gas | --gas | --ga | --g)
683 # Obsolete; use --with-gas.
686 -help | --help | --hel | --he | -h)
688 -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
689 ac_init_help=recursive ;;
690 -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
691 ac_init_help=short ;;
693 -host | --host | --hos | --ho)
694 ac_prev=host_alias ;;
695 -host=* | --host=* | --hos=* | --ho=*)
696 host_alias=$ac_optarg ;;
698 -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
700 -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
702 htmldir=$ac_optarg ;;
704 -includedir | --includedir | --includedi | --included | --include \
705 | --includ | --inclu | --incl | --inc)
706 ac_prev=includedir ;;
707 -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
708 | --includ=* | --inclu=* | --incl=* | --inc=*)
709 includedir=$ac_optarg ;;
711 -infodir | --infodir | --infodi | --infod | --info | --inf)
713 -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
714 infodir=$ac_optarg ;;
716 -libdir | --libdir | --libdi | --libd)
718 -libdir=* | --libdir=* | --libdi=* | --libd=*)
721 -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
722 | --libexe | --libex | --libe)
723 ac_prev=libexecdir ;;
724 -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
725 | --libexe=* | --libex=* | --libe=*)
726 libexecdir=$ac_optarg ;;
728 -localedir | --localedir | --localedi | --localed | --locale)
730 -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
731 localedir=$ac_optarg ;;
733 -localstatedir | --localstatedir | --localstatedi | --localstated \
734 | --localstate | --localstat | --localsta | --localst | --locals)
735 ac_prev=localstatedir ;;
736 -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
737 | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
738 localstatedir=$ac_optarg ;;
740 -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
742 -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
746 # Obsolete; use --without-fp.
749 -no-create | --no-create | --no-creat | --no-crea | --no-cre \
750 | --no-cr | --no-c | -n)
753 -no-recursion | --no-recursion | --no-recursio | --no-recursi \
754 | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
757 -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
758 | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
759 | --oldin | --oldi | --old | --ol | --o)
760 ac_prev=oldincludedir ;;
761 -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
762 | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
763 | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
764 oldincludedir=$ac_optarg ;;
766 -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
768 -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
771 -program-prefix | --program-prefix | --program-prefi | --program-pref \
772 | --program-pre | --program-pr | --program-p)
773 ac_prev=program_prefix ;;
774 -program-prefix=* | --program-prefix=* | --program-prefi=* \
775 | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
776 program_prefix=$ac_optarg ;;
778 -program-suffix | --program-suffix | --program-suffi | --program-suff \
779 | --program-suf | --program-su | --program-s)
780 ac_prev=program_suffix ;;
781 -program-suffix=* | --program-suffix=* | --program-suffi=* \
782 | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
783 program_suffix=$ac_optarg ;;
785 -program-transform-name | --program-transform-name \
786 | --program-transform-nam | --program-transform-na \
787 | --program-transform-n | --program-transform- \
788 | --program-transform | --program-transfor \
789 | --program-transfo | --program-transf \
790 | --program-trans | --program-tran \
791 | --progr-tra | --program-tr | --program-t)
792 ac_prev=program_transform_name ;;
793 -program-transform-name=* | --program-transform-name=* \
794 | --program-transform-nam=* | --program-transform-na=* \
795 | --program-transform-n=* | --program-transform-=* \
796 | --program-transform=* | --program-transfor=* \
797 | --program-transfo=* | --program-transf=* \
798 | --program-trans=* | --program-tran=* \
799 | --progr-tra=* | --program-tr=* | --program-t=*)
800 program_transform_name=$ac_optarg ;;
802 -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
804 -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
807 -psdir | --psdir | --psdi | --psd | --ps)
809 -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
812 -q | -quiet | --quiet | --quie | --qui | --qu | --q \
813 | -silent | --silent | --silen | --sile | --sil)
816 -runstatedir | --runstatedir | --runstatedi | --runstated \
817 | --runstate | --runstat | --runsta | --runst | --runs \
818 | --run | --ru | --r)
819 ac_prev=runstatedir ;;
820 -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
821 | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
822 | --run=* | --ru=* | --r=*)
823 runstatedir=$ac_optarg ;;
825 -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
827 -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
829 sbindir=$ac_optarg ;;
831 -sharedstatedir | --sharedstatedir | --sharedstatedi \
832 | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
833 | --sharedst | --shareds | --shared | --share | --shar \
835 ac_prev=sharedstatedir ;;
836 -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
837 | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
838 | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
840 sharedstatedir=$ac_optarg ;;
842 -site | --site | --sit)
844 -site=* | --site=* | --sit=*)
847 -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
849 -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
852 -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
853 | --syscon | --sysco | --sysc | --sys | --sy)
854 ac_prev=sysconfdir ;;
855 -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
856 | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
857 sysconfdir=$ac_optarg ;;
859 -target | --target | --targe | --targ | --tar | --ta | --t)
860 ac_prev=target_alias ;;
861 -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
862 target_alias=$ac_optarg ;;
864 -v | -verbose | --verbose | --verbos | --verbo | --verb)
867 -version | --version | --versio | --versi | --vers | -V)
870 _AC_INIT_PARSE_ENABLE([with])
872 _AC_INIT_PARSE_ENABLE([without])
875 # Obsolete; use --with-x.
878 -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
879 | --x-incl | --x-inc | --x-in | --x-i)
880 ac_prev=x_includes ;;
881 -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
882 | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
883 x_includes=$ac_optarg ;;
885 -x-libraries | --x-libraries | --x-librarie | --x-librari \
886 | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
887 ac_prev=x_libraries ;;
888 -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
889 | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
890 x_libraries=$ac_optarg ;;
892 -*) AC_MSG_ERROR([unrecognized option: `$ac_option'
893 Try `$[0] --help' for more information])
897 ac_envvar=`expr "x$ac_option" : 'x\([[^=]]*\)='`
898 # Reject names that are not valid shell variable names.
899 case $ac_envvar in #(
900 '' | [[0-9]]* | *[[!_$as_cr_alnum]]* )
901 AC_MSG_ERROR([invalid variable name: `$ac_envvar']) ;;
903 eval $ac_envvar=\$ac_optarg
907 # FIXME: should be removed in autoconf 3.0.
908 AC_MSG_WARN([you should use --build, --host, --target])
909 expr "x$ac_option" : "[.*[^-._$as_cr_alnum]]" >/dev/null &&
910 AC_MSG_WARN([invalid host type: $ac_option])
911 : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
917 if test -n "$ac_prev"; then
918 ac_option=--`echo $ac_prev | sed 's/_/-/g'`
919 AC_MSG_ERROR([missing argument to $ac_option])
922 if test -n "$ac_unrecognized_opts"; then
923 case $enable_option_checking in
925 fatal) AC_MSG_ERROR([unrecognized options: $ac_unrecognized_opts]) ;;
926 *) AC_MSG_WARN( [unrecognized options: $ac_unrecognized_opts]) ;;
930 # Check all directory arguments for consistency.
931 for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
932 datadir sysconfdir sharedstatedir localstatedir includedir \
933 oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
934 libdir localedir mandir runstatedir
936 eval ac_val=\$$ac_var
937 # Remove trailing slashes.
940 ac_val=`expr "X$ac_val" : 'X\(.*[[^/]]\)' \| "X$ac_val" : 'X\(.*\)'`
941 eval $ac_var=\$ac_val;;
943 # Be sure to have absolute directory names.
945 [[\\/$]]* | ?:[[\\/]]* ) continue;;
946 NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
948 AC_MSG_ERROR([expected an absolute directory name for --$ac_var: $ac_val])
951 # There might be people who depend on the old broken behavior: `$host'
952 # used to hold the argument of --host etc.
953 # FIXME: To remove some day.
958 # FIXME: To remove some day.
959 if test "x$host_alias" != x; then
960 if test "x$build_alias" = x; then
961 cross_compiling=maybe
962 elif test "x$build_alias" != "x$host_alias"; then
968 test -n "$host_alias" && ac_tool_prefix=$host_alias-
970 test "$silent" = yes && exec AS_MESSAGE_FD>/dev/null
972 m4_divert_pop([PARSE_ARGS])dnl
973 ])# _AC_INIT_PARSE_ARGS
976 # _AC_INIT_PARSE_ENABLE(OPTION-NAME)
977 # ----------------------------------
978 # A trivial front-end for _AC_INIT_PARSE_ENABLE2.
980 m4_define([_AC_INIT_PARSE_ENABLE],
981 [m4_bmatch([$1], [^with],
982 [_AC_INIT_PARSE_ENABLE2([$1], [with])],
983 [_AC_INIT_PARSE_ENABLE2([$1], [enable])])])
986 # _AC_INIT_PARSE_ENABLE2(OPTION-NAME, POSITIVE-NAME)
987 # --------------------------------------------------
988 # Handle an `--enable' or a `--with' option.
990 # OPTION-NAME is `enable', `disable', `with', or `without'.
991 # POSITIVE-NAME is the corresponding positive variant, i.e. `enable' or `with'.
993 # Positive variant of the option is recognized by the condition
994 # OPTION-NAME == POSITIVE-NAME .
996 m4_define([_AC_INIT_PARSE_ENABLE2],
998 ac_useropt=`expr "x$ac_option" : 'x-*$1-\(m4_if([$1], [$2], [[[^=]]], [.])*\)'`
999 # Reject names that are not valid shell variable names.
1000 expr "x$ac_useropt" : "[.*[^-+._$as_cr_alnum]]" >/dev/null &&
1001 AC_MSG_ERROR([invalid ]m4_if([$2], [with],
1002 [package], [feature])[ name: `$ac_useropt'])
1003 ac_useropt_orig=$ac_useropt
1004 ac_useropt=`AS_ECHO(["$ac_useropt"]) | sed 's/[[-+.]]/_/g'`
1005 case $ac_user_opts in
1009 *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--$1-$ac_useropt_orig"
1010 ac_unrecognized_sep=', ';;
1012 eval $2_$ac_useropt=m4_if([$1], [$2], [\$ac_optarg], [no]) ;;dnl
1018 # Handle the `configure --help' message.
1019 m4_define([_AC_INIT_HELP],
1020 [m4_divert_push([HELP_BEGIN])dnl
1023 # Report the --help message.
1025 if test "$ac_init_help" = "long"; then
1026 # Omit some internal or obsolete options to make the list less imposing.
1027 # This message is too long to be a string in the A/UX 3.1 sh.
1029 \`configure' configures m4_ifset([AC_PACKAGE_STRING],
1030 [AC_PACKAGE_STRING],
1031 [this package]) to adapt to many kinds of systems.
1033 Usage: $[0] [[OPTION]]... [[VAR=VALUE]]...
1035 [To assign environment variables (e.g., CC, CFLAGS...), specify them as
1036 VAR=VALUE. See below for descriptions of some of the useful variables.
1038 Defaults for the options are specified in brackets.
1041 -h, --help display this help and exit
1042 --help=short display options specific to this package
1043 --help=recursive display the short help of all the included packages
1044 -V, --version display version information and exit
1045 -q, --quiet, --silent do not print \`checking ...' messages
1046 --cache-file=FILE cache test results in FILE [disabled]
1047 -C, --config-cache alias for \`--cache-file=config.cache'
1048 -n, --no-create do not create output files
1049 --srcdir=DIR find the sources in DIR [configure dir or \`..']
1051 Installation directories:
1052 ]AS_HELP_STRING([--prefix=PREFIX],
1053 [install architecture-independent files in PREFIX [$ac_default_prefix]])
1054 AS_HELP_STRING([--exec-prefix=EPREFIX],
1055 [install architecture-dependent files in EPREFIX [PREFIX]])[
1057 By default, \`make install' will install all the files in
1058 \`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc. You can specify
1059 an installation prefix other than \`$ac_default_prefix' using \`--prefix',
1060 for instance \`--prefix=\$HOME'.
1062 For better control, use the options below.
1064 Fine tuning of the installation directories:
1065 --bindir=DIR user executables [EPREFIX/bin]
1066 --sbindir=DIR system admin executables [EPREFIX/sbin]
1067 --libexecdir=DIR program executables [EPREFIX/libexec]
1068 --sysconfdir=DIR read-only single-machine data [PREFIX/etc]
1069 --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
1070 --localstatedir=DIR modifiable single-machine data [PREFIX/var]
1071 --runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
1072 --libdir=DIR object code libraries [EPREFIX/lib]
1073 --includedir=DIR C header files [PREFIX/include]
1074 --oldincludedir=DIR C header files for non-gcc [/usr/include]
1075 --datarootdir=DIR read-only arch.-independent data root [PREFIX/share]
1076 --datadir=DIR read-only architecture-independent data [DATAROOTDIR]
1077 --infodir=DIR info documentation [DATAROOTDIR/info]
1078 --localedir=DIR locale-dependent data [DATAROOTDIR/locale]
1079 --mandir=DIR man documentation [DATAROOTDIR/man]
1080 ]AS_HELP_STRING([--docdir=DIR],
1081 [documentation root ]@<:@DATAROOTDIR/doc/m4_ifset([AC_PACKAGE_TARNAME],
1082 [AC_PACKAGE_TARNAME], [PACKAGE])@:>@)[
1083 --htmldir=DIR html documentation [DOCDIR]
1084 --dvidir=DIR dvi documentation [DOCDIR]
1085 --pdfdir=DIR pdf documentation [DOCDIR]
1086 --psdir=DIR ps documentation [DOCDIR]
1090 m4_divert_pop([HELP_BEGIN])dnl
1091 dnl The order of the diversions here is
1093 dnl which may be extended by extra generic options such as with X or
1094 dnl AC_ARG_PROGRAM. Displayed only in long --help.
1097 dnl Support for cross compilation (--build, --host and --target).
1098 dnl Display only in long --help.
1101 dnl which starts with the trailer of the HELP_BEGIN, HELP_CANON section,
1102 dnl then implements the header of the non generic options.
1111 dnl initialized below, in which we dump the trailer (handling of the
1112 dnl recursion for instance).
1113 m4_divert_push([HELP_ENABLE])dnl
1117 if test -n "$ac_init_help"; then
1118 m4_ifset([AC_PACKAGE_STRING],
1119 [ case $ac_init_help in
1120 short | recursive ) echo "Configuration of AC_PACKAGE_STRING:";;
1123 m4_divert_pop([HELP_ENABLE])dnl
1124 m4_divert_push([HELP_END])dnl
1126 Report bugs to m4_ifset([AC_PACKAGE_BUGREPORT], [<AC_PACKAGE_BUGREPORT>],
1127 [the package provider]).dnl
1128 m4_ifdef([AC_PACKAGE_NAME], [m4_ifset([AC_PACKAGE_URL], [
1129 AC_PACKAGE_NAME home page: <AC_PACKAGE_URL>.])dnl
1130 m4_if(m4_index(m4_defn([AC_PACKAGE_NAME]), [GNU ]), [0], [
1131 General help using GNU software: <https://www.gnu.org/gethelp/>.])])
1136 if test "$ac_init_help" = "recursive"; then
1137 # If there are subdirs, report their specific --help.
1138 for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
1139 test -d "$ac_dir" ||
1140 { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
1142 _AC_SRCDIRS(["$ac_dir"])
1143 cd "$ac_dir" || { ac_status=$?; continue; }
1144 # Check for guested configure.
1145 if test -f "$ac_srcdir/configure.gnu"; then
1147 $SHELL "$ac_srcdir/configure.gnu" --help=recursive
1148 elif test -f "$ac_srcdir/configure"; then
1150 $SHELL "$ac_srcdir/configure" --help=recursive
1152 AC_MSG_WARN([no configuration information is in $ac_dir])
1154 cd "$ac_pwd" || { ac_status=$?; break; }
1158 test -n "$ac_init_help" && exit $ac_status
1159 m4_divert_pop([HELP_END])dnl
1165 # Handle the `configure --version' message.
1166 m4_define([_AC_INIT_VERSION],
1167 [m4_divert_text([VERSION_BEGIN],
1168 [if $ac_init_version; then
1170 m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])configure[]dnl
1171 m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
1172 generated by m4_PACKAGE_STRING])
1173 m4_divert_text([VERSION_END],
1177 ])# _AC_INIT_VERSION
1180 # _AC_INIT_CONFIG_LOG
1181 # -------------------
1182 # Initialize the config.log file descriptor and write header to it.
1183 m4_define([_AC_INIT_CONFIG_LOG],
1184 [m4_divert_text([INIT_PREPARE],
1185 [m4_define([AS_MESSAGE_LOG_FD], 5)dnl
1186 ac_configure_args_raw=
1191 ac_arg=`AS_ECHO(["$ac_arg"]) | sed "s/'/'\\\\\\\\''/g"` ;;
1193 AS_VAR_APPEND([ac_configure_args_raw], [" '$ac_arg'"])
1196 case $ac_configure_args_raw in
1200 ac_unsafe_z='|&;<>()$`\\"*?@<:@ '' ' # This string ends in space, tab.
1201 ac_unsafe_a="$ac_unsafe_z#~"
1202 ac_safe_unquote="s/ '\\([[^$ac_unsafe_a]][[^$ac_unsafe_z]]*\\)'/ \\1/g"
1203 ac_configure_args_raw=`dnl
1204 AS_ECHO(["$ac_configure_args_raw"]) | sed "$ac_safe_unquote"`;;
1207 cat >config.log <<_ACEOF
1208 This file contains any messages produced by compilers while
1209 running configure, to aid debugging if configure makes a mistake.
1211 It was created by m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])dnl
1212 $as_me[]m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION]), which was
1213 generated by m4_PACKAGE_STRING. Invocation command line was
1215 $ $[0]$ac_configure_args_raw
1218 exec AS_MESSAGE_LOG_FD>>config.log
1219 AS_UNAME >&AS_MESSAGE_LOG_FD
1221 cat >&AS_MESSAGE_LOG_FD <<_ACEOF
1224 m4_text_box([Core tests.])
1227 ])])# _AC_INIT_CONFIG_LOG
1232 # Called by AC_INIT to build the preamble of the `configure' scripts.
1233 # 1. Trap and clean up various tmp files.
1234 # 2. Set up the fd and output files
1235 # 3. Remember the options given to `configure' for `config.status --recheck'.
1236 # 4. Initiates confdefs.h
1237 # 5. Loads site and cache files
1238 m4_define([_AC_INIT_PREPARE],
1239 [m4_divert_push([INIT_PREPARE])dnl
1241 # Keep a trace of the command line.
1242 # Strip out --no-create and --no-recursion so they do not pile up.
1243 # Strip out --silent because we don't want to record it for future runs.
1244 # Also quote any args containing shell meta-characters.
1245 # Make two passes to allow for proper duplicate-argument suppression.
1249 ac_must_keep_next=false
1255 -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
1256 -q | -quiet | --quiet | --quie | --qui | --qu | --q \
1257 | -silent | --silent | --silen | --sile | --sil)
1260 ac_arg=`AS_ECHO(["$ac_arg"]) | sed "s/'/'\\\\\\\\''/g"` ;;
1263 1) AS_VAR_APPEND([ac_configure_args0], [" '$ac_arg'"]) ;;
1265 AS_VAR_APPEND([ac_configure_args1], [" '$ac_arg'"])
1266 dnl If trying to remove duplicates, be sure to (i) keep the *last*
1267 dnl value (e.g. --prefix=1 --prefix=2 --prefix=1 might keep 2 only),
1268 dnl and (ii) not to strip long options (--prefix foo --prefix bar might
1269 dnl give --prefix foo bar).
1270 if test $ac_must_keep_next = true; then
1271 ac_must_keep_next=false # Got value, back to normal.
1274 dnl Use broad patterns, as arguments that would have already made configure
1275 dnl exit don't matter.
1276 *=* | --config-cache | -C | -disable-* | --disable-* \
1277 | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
1278 | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
1279 | -with-* | --with-* | -without-* | --without-* | --x)
1280 case "$ac_configure_args0 " in
1281 "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
1284 -* ) ac_must_keep_next=true ;;
1287 AS_VAR_APPEND([ac_configure_args], [" '$ac_arg'"])
1292 AS_UNSET(ac_configure_args0)
1293 AS_UNSET(ac_configure_args1)
1295 # When interrupted or exit'd, cleanup temporary files, and complete
1296 # config.log. We remove comments because anyway the quotes in there
1297 # would cause problems or look ugly.
1298 # WARNING: Use '\'' to represent an apostrophe within the trap.
1299 # WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
1300 trap 'exit_status=$?
1303 # Save into config.log some information that might help in debugging.
1307 AS_BOX([Cache variables.])
1309 m4_bpatsubsts(m4_defn([_AC_CACHE_DUMP]),
1315 AS_BOX([Output variables.])
1317 for ac_var in $ac_subst_vars
1319 eval ac_val=\$$ac_var
1321 *\'\''*) ac_val=`AS_ECHO(["$ac_val"]) | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
1323 AS_ECHO(["$ac_var='\''$ac_val'\''"])
1327 if test -n "$ac_subst_files"; then
1328 AS_BOX([File substitutions.])
1330 for ac_var in $ac_subst_files
1332 eval ac_val=\$$ac_var
1334 *\'\''*) ac_val=`AS_ECHO(["$ac_val"]) | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
1336 AS_ECHO(["$ac_var='\''$ac_val'\''"])
1341 if test -s confdefs.h; then
1342 AS_BOX([confdefs.h.])
1347 test "$ac_signal" != 0 &&
1348 AS_ECHO(["$as_me: caught signal $ac_signal"])
1349 AS_ECHO(["$as_me: exit $exit_status"])
1350 } >&AS_MESSAGE_LOG_FD
1351 rm -f core *.core core.conftest.* &&
1352 rm -f -r conftest* confdefs* conf$[$]* $ac_clean_files &&
1355 for ac_signal in 1 2 13 15; do
1356 trap 'ac_signal='$ac_signal'; AS_EXIT([1])' $ac_signal
1360 # confdefs.h avoids OS command line length limits that DEFS can exceed.
1361 rm -f -r conftest* confdefs.h
1363 dnl AIX cpp loses on an empty file, NextStep 3.3 (patch 3) loses on a file
1364 dnl containing less than 14 bytes (including the newline).
1365 AS_ECHO(["/* confdefs.h */"]) > confdefs.h
1367 # Predefined preprocessor variables.
1368 AC_DEFINE_UNQUOTED([PACKAGE_NAME], ["$PACKAGE_NAME"],
1369 [Define to the full name of this package.])dnl
1370 AC_DEFINE_UNQUOTED([PACKAGE_TARNAME], ["$PACKAGE_TARNAME"],
1371 [Define to the one symbol short name of this package.])dnl
1372 AC_DEFINE_UNQUOTED([PACKAGE_VERSION], ["$PACKAGE_VERSION"],
1373 [Define to the version of this package.])dnl
1374 AC_DEFINE_UNQUOTED([PACKAGE_STRING], ["$PACKAGE_STRING"],
1375 [Define to the full name and version of this package.])dnl
1376 AC_DEFINE_UNQUOTED([PACKAGE_BUGREPORT], ["$PACKAGE_BUGREPORT"],
1377 [Define to the address where bug reports for this package
1378 should be sent.])dnl
1379 AC_DEFINE_UNQUOTED([PACKAGE_URL], ["$PACKAGE_URL"],
1380 [Define to the home page for this package.])
1382 # Let the site file select an alternate cache file if it wants to.
1385 m4_divert_pop([INIT_PREPARE])dnl
1386 ])# _AC_INIT_PREPARE
1389 # AU::AC_INIT([UNIQUE-FILE-IN-SOURCE-DIR])
1390 # ----------------------------------------
1391 # This macro is used only for Autoupdate.
1393 [m4_ifval([$2], [[AC_INIT($@)]],
1396 AC_CONFIG_SRCDIR([$1])], [[AC_INIT]])])[]dnl
1400 # AC_INIT([PACKAGE, VERSION, [BUG-REPORT], [TARNAME], [URL])
1401 # ----------------------------------------------------------
1402 # Include the user macro files, prepare the diversions, and output the
1403 # preamble of the `configure' script.
1405 # If BUG-REPORT is omitted, do without (unless the user previously
1406 # defined the m4 macro AC_PACKAGE_BUGREPORT). If TARNAME is omitted,
1407 # use PACKAGE to seed it. If URL is omitted, use
1408 # `https://www.gnu.org/software/TARNAME/' if PACKAGE begins with `GNU',
1409 # otherwise, do without.
1411 # Note that the order is important: first initialize, then set the
1413 m4_define([AC_INIT],
1414 [# Forbidden tokens and exceptions.
1415 m4_pattern_forbid([^_?A[CHUM]_])
1416 m4_pattern_forbid([_AC_])
1417 m4_pattern_forbid([^LIBOBJS$],
1418 [do not use LIBOBJS directly, use AC_LIBOBJ (see section `AC_LIBOBJ vs LIBOBJS'])
1419 # Actually reserved by M4sh.
1420 m4_pattern_allow([^AS_FLAGS$])
1421 # So that the autoconf-generated scripts will always re-execute
1422 # themselves with $CONFIG_SHELL, if that's set in the environment.
1423 m4_define([_AS_FORCE_REEXEC_WITH_CONFIG_SHELL], [yes])
1426 m4_divert_push([KILL])
1427 m4_ifval([$2], [_AC_INIT_PACKAGE($@)])
1438 m4_divert_text([SHELL_FN], [
1439 m4_text_box([Autoconf initialization.])])
1441 m4_ifval([$2], , [m4_ifval([$1], [AC_CONFIG_SRCDIR([$1])])])dnl
1443 dnl Substitute for predefined variables.
1445 AC_SUBST([ECHO_C])dnl
1446 AC_SUBST([ECHO_N])dnl
1447 AC_SUBST([ECHO_T])dnl
1449 _AC_ARG_VAR_PRECIOUS([build_alias])AC_SUBST([build_alias])dnl
1450 _AC_ARG_VAR_PRECIOUS([host_alias])AC_SUBST([host_alias])dnl
1451 _AC_ARG_VAR_PRECIOUS([target_alias])AC_SUBST([target_alias])dnl
1459 ## ------------------------------------------------------------- ##
1460 ## Selecting optional features, working with optional software. ##
1461 ## ------------------------------------------------------------- ##
1463 # AC_PRESERVE_HELP_ORDER
1464 # ----------------------
1465 # Emit help strings in the order given, rather than grouping all --enable-FOO
1466 # and all --with-BAR.
1467 AC_DEFUN([AC_PRESERVE_HELP_ORDER],
1468 [m4_divert_once([HELP_ENABLE], [[
1469 Optional Features and Packages:
1470 --disable-option-checking ignore unrecognized --enable/--with options
1471 --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
1472 --enable-FEATURE[=ARG] include FEATURE [ARG=yes]
1473 --with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
1474 --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)]])
1475 m4_define([_m4_divert(HELP_ENABLE)], _m4_divert(HELP_WITH))
1476 ])# AC_PRESERVE_HELP_ORDER
1478 # _AC_ENABLE_IF(OPTION, FEATURE, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
1479 # -------------------------------------------------------------------
1480 # Common code for AC_ARG_ENABLE and AC_ARG_WITH.
1481 # OPTION is either "enable" or "with".
1483 m4_define([_AC_ENABLE_IF],
1484 [@%:@ Check whether --$1-$2 was given.
1485 _AC_ENABLE_IF_ACTION([$1], m4_translit([$2], [-+.], [___]), [$3], [$4])
1488 m4_define([_AC_ENABLE_IF_ACTION],
1489 [m4_append_uniq([_AC_USER_OPTS], [$1_$2], [
1491 AS_IF([test ${$1_$2+y}], [$1val=$$1_$2; $3], [$4])dnl
1494 # AC_ARG_ENABLE(FEATURE, HELP-STRING, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
1495 # ------------------------------------------------------------------------
1496 AC_DEFUN([AC_ARG_ENABLE],
1497 [AC_PROVIDE_IFELSE([AC_PRESERVE_HELP_ORDER],
1499 [m4_divert_once([HELP_ENABLE], [[
1501 --disable-option-checking ignore unrecognized --enable/--with options
1502 --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
1503 --enable-FEATURE[=ARG] include FEATURE [ARG=yes]]])])dnl
1504 m4_divert_once([HELP_ENABLE], [$2])dnl
1505 _AC_ENABLE_IF([enable], [$1], [$3], [$4])dnl
1509 AU_DEFUN([AC_ENABLE],
1510 [AC_ARG_ENABLE([$1], [ --enable-$1], [$2], [$3])])
1513 # AC_ARG_WITH(PACKAGE, HELP-STRING, ACTION-IF-TRUE, [ACTION-IF-FALSE])
1514 # --------------------------------------------------------------------
1515 AC_DEFUN([AC_ARG_WITH],
1516 [AC_PROVIDE_IFELSE([AC_PRESERVE_HELP_ORDER],
1518 [m4_divert_once([HELP_WITH], [[
1520 --with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
1521 --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)]])])
1522 m4_divert_once([HELP_WITH], [$2])dnl
1523 _AC_ENABLE_IF([with], [$1], [$3], [$4])dnl
1527 [AC_ARG_WITH([$1], [ --with-$1], [$2], [$3])])
1529 # AC_DISABLE_OPTION_CHECKING
1530 # --------------------------
1531 AC_DEFUN([AC_DISABLE_OPTION_CHECKING],
1532 [m4_divert_once([DEFAULTS], [enable_option_checking=no])
1533 ])# AC_DISABLE_OPTION_CHECKING
1536 ## ----------------------------------------- ##
1537 ## Remembering variables for reconfiguring. ##
1538 ## ----------------------------------------- ##
1541 # AC_ARG_VAR(VARNAME, DOCUMENTATION)
1542 # ----------------------------------
1543 # Register VARNAME as a precious variable, and document it in
1544 # `configure --help' (but only once).
1545 AC_DEFUN([AC_ARG_VAR],
1546 [m4_divert_once([HELP_VAR], [[
1547 Some influential environment variables:]])dnl
1548 m4_divert_once([HELP_VAR_END], [[
1549 Use these variables to override the choices made by `configure' or to help
1550 it to find libraries and programs with nonstandard names/locations.]])dnl
1551 m4_expand_once([m4_divert_text([HELP_VAR],
1552 [AS_HELP_STRING([$1], [$2], [ ])])],
1555 _AC_ARG_VAR_PRECIOUS([$1])dnl
1559 # _AC_ARG_VAR_PRECIOUS(VARNAME)
1560 # -----------------------------
1561 # Declare VARNAME is precious.
1562 m4_define([_AC_ARG_VAR_PRECIOUS],
1563 [m4_append_uniq([_AC_PRECIOUS_VARS], [$1], [
1570 # We try to diagnose when precious variables have changed. To do this,
1571 # make two early snapshots (after the option processing to take
1572 # explicit variables into account) of those variables: one (ac_env_)
1573 # which represents the current run, and a second (ac_cv_env_) which,
1574 # at the first run, will be saved in the cache. As an exception to
1575 # the cache mechanism, its loading will override these variables (non
1576 # `ac_cv_env_' cache value are only set when unset).
1578 # In subsequent runs, after having loaded the cache, compare
1579 # ac_cv_env_foo against ac_env_foo. See _AC_ARG_VAR_VALIDATE.
1580 m4_define([_AC_ARG_VAR_STORE],
1581 [m4_divert_text([PARSE_ARGS],
1582 [for ac_var in $ac_precious_vars; do
1583 eval ac_env_${ac_var}_set=\${${ac_var}+set}
1584 eval ac_env_${ac_var}_value=\$${ac_var}
1585 eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
1586 eval ac_cv_env_${ac_var}_value=\$${ac_var}
1591 # _AC_ARG_VAR_VALIDATE
1592 # --------------------
1593 # The precious variables are saved twice at the beginning of
1594 # configure. E.g., PRECIOUS is saved as `ac_env_PRECIOUS_set' and
1595 # `ac_env_PRECIOUS_value' on the one hand and `ac_cv_env_PRECIOUS_set'
1596 # and `ac_cv_env_PRECIOUS_value' on the other hand.
1598 # Now the cache has just been loaded, so `ac_cv_env_' represents the
1599 # content of the cached values, while `ac_env_' represents that of the
1602 # So we check that `ac_env_' and `ac_cv_env_' are consistent. If
1604 m4_define([_AC_ARG_VAR_VALIDATE],
1605 [m4_divert_text([INIT_PREPARE],
1606 [# Check that the precious variables saved in the cache have kept the same
1608 ac_cache_corrupted=false
1609 for ac_var in $ac_precious_vars; do
1610 eval ac_old_set=\$ac_cv_env_${ac_var}_set
1611 eval ac_new_set=\$ac_env_${ac_var}_set
1612 eval ac_old_val=\$ac_cv_env_${ac_var}_value
1613 eval ac_new_val=\$ac_env_${ac_var}_value
1614 case $ac_old_set,$ac_new_set in
1616 AS_MESSAGE([error: `$ac_var' was set to `$ac_old_val' in the previous run], 2)
1617 ac_cache_corrupted=: ;;
1619 AS_MESSAGE([error: `$ac_var' was not set in the previous run], 2)
1620 ac_cache_corrupted=: ;;
1623 if test "x$ac_old_val" != "x$ac_new_val"; then
1624 # differences in whitespace do not lead to failure.
1625 ac_old_val_w=`echo x $ac_old_val`
1626 ac_new_val_w=`echo x $ac_new_val`
1627 if test "$ac_old_val_w" != "$ac_new_val_w"; then
1628 AS_MESSAGE([error: `$ac_var' has changed since the previous run:], 2)
1629 ac_cache_corrupted=:
1631 AS_MESSAGE([warning: ignoring whitespace changes in `$ac_var' since the previous run:], 2)
1632 eval $ac_var=\$ac_old_val
1634 AS_MESSAGE([ former value: `$ac_old_val'], 2)
1635 AS_MESSAGE([ current value: `$ac_new_val'], 2)
1638 # Pass precious variables to config.status.
1639 if test "$ac_new_set" = set; then
1641 *\'*) ac_arg=$ac_var=`AS_ECHO(["$ac_new_val"]) | sed "s/'/'\\\\\\\\''/g"` ;;
1642 *) ac_arg=$ac_var=$ac_new_val ;;
1644 case " $ac_configure_args " in
1645 *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy.
1646 *) AS_VAR_APPEND([ac_configure_args], [" '$ac_arg'"]) ;;
1650 if $ac_cache_corrupted; then
1651 AS_MESSAGE([error: in `$ac_pwd':], 2)
1652 AS_MESSAGE([error: changes in the environment can compromise the build], 2)
1653 AS_ERROR([run `make distclean' and/or `rm $cache_file' and start over])
1655 ])# _AC_ARG_VAR_VALIDATE
1661 ## ---------------------------- ##
1662 ## Transforming program names. ##
1663 ## ---------------------------- ##
1668 # This macro is expanded only once, to avoid that `foo' ends up being
1669 # installed as `ggfoo'.
1670 AC_DEFUN_ONCE([AC_ARG_PROGRAM],
1671 [dnl Document the options.
1672 m4_divert_push([HELP_BEGIN])dnl
1675 --program-prefix=PREFIX prepend PREFIX to installed program names
1676 --program-suffix=SUFFIX append SUFFIX to installed program names
1677 --program-transform-name=PROGRAM run sed PROGRAM on installed program names
1678 m4_divert_pop([HELP_BEGIN])dnl
1679 test "$program_prefix" != NONE &&
1680 program_transform_name="s&^&$program_prefix&;$program_transform_name"
1681 # Use a double $ so make ignores it.
1682 test "$program_suffix" != NONE &&
1683 program_transform_name="s&\$&$program_suffix&;$program_transform_name"
1684 # Double any \ or $.
1685 # By default was `s,x,x', remove it if useless.
1686 [ac_script='s/[\\$]/&&/g;s/;s,x,x,$//']
1687 program_transform_name=`AS_ECHO(["$program_transform_name"]) | sed "$ac_script"`
1694 ## ------------------------- ##
1695 ## Finding auxiliary files. ##
1696 ## ------------------------- ##
1699 # AC_CONFIG_AUX_DIR(DIR)
1700 # ----------------------
1701 # Find install-sh, config.sub, config.guess, and Cygnus configure
1702 # in directory DIR. These are auxiliary files used in configuration.
1703 # DIR can be either absolute or relative to $srcdir.
1704 AC_DEFUN([AC_CONFIG_AUX_DIR],
1705 [AC_CONFIG_AUX_DIRS($1 "$srcdir"/$1)])
1708 # AC_CONFIG_AUX_DIR_DEFAULT
1709 # -------------------------
1710 # The default is `$srcdir' or `$srcdir/..' or `$srcdir/../..'.
1711 # There's no need to call this macro explicitly; just AC_REQUIRE it.
1712 AC_DEFUN([AC_CONFIG_AUX_DIR_DEFAULT],
1713 [AC_CONFIG_AUX_DIRS("$srcdir" "$srcdir/.." "$srcdir/../..")])
1716 # AC_CONFIG_AUX_DIRS(DIR ...)
1717 # ---------------------------
1718 # Internal subroutine.
1719 # Search for the configuration auxiliary files in directory list $1.
1720 # We look only for install-sh, so users of AC_PROG_INSTALL
1721 # do not automatically need to distribute the other auxiliary files.
1722 AC_DEFUN([AC_CONFIG_AUX_DIRS],
1726 if test -f "$ac_dir/install-sh"; then
1728 ac_install_sh="$ac_aux_dir/install-sh -c"
1730 elif test -f "$ac_dir/install.sh"; then
1732 ac_install_sh="$ac_aux_dir/install.sh -c"
1734 elif test -f "$ac_dir/shtool"; then
1736 ac_install_sh="$ac_aux_dir/shtool install -c"
1740 if test -z "$ac_aux_dir"; then
1741 AC_MSG_ERROR([cannot find install-sh, install.sh, or shtool in $1])
1744 # These three variables are undocumented and unsupported,
1745 # and are intended to be withdrawn in a future Autoconf release.
1746 # They can cause serious problems if a builder's source tree is in a directory
1747 # whose full name contains unusual characters.
1748 ac_config_guess="$SHELL $ac_aux_dir/config.guess" # Please don't use this var.
1749 ac_config_sub="$SHELL $ac_aux_dir/config.sub" # Please don't use this var.
1750 ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var.
1752 AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
1753 ])# AC_CONFIG_AUX_DIRS
1758 ## ------------------------ ##
1759 ## Finding aclocal macros. ##
1760 ## ------------------------ ##
1763 # AC_CONFIG_MACRO_DIR_TRACE(DIR)
1764 # ------------------------------
1765 # This macro exists solely for tracing - never invoke it directly.
1766 # It will be called once per directory listed in either form of
1767 # AC_CONFIG_MACRO_DIR[S].
1768 m4_define([AC_CONFIG_MACRO_DIR_TRACE],
1769 [m4_fatal([Do not invoke $0 directly])])
1771 # _AC_CONFIG_MACRO_DIRS_USED
1772 # --------------------------
1773 # Internal witness macro, redefined to empty after first directory is traced.
1774 m4_define([_AC_CONFIG_MACRO_DIRS_USED], [-])
1776 # _AC_CONFIG_MACRO_DIRS(CALLER, DIR)
1777 # ----------------------------------
1778 # Internal workhorse macro to ensure a sane calling pattern of CALLER, and
1779 # eventually trace DIR through the documented public trace point.
1780 m4_define([_AC_CONFIG_MACRO_DIRS],
1781 [m4_if([$1], [-AC_CONFIG_MACRO_DIRS], [AC_CONFIG_MACRO_DIR([$2])],
1782 [$1], [AC_CONFIG_MACRO_DIR], [m4_fatal([$1 can only be used once])],
1783 [m4_define([$0_USED])m4_pushdef([AC_CONFIG_MACRO_DIR_TRACE])]]dnl
1784 [[AC_CONFIG_MACRO_DIR_TRACE([$2])m4_popdef([AC_CONFIG_MACRO_DIR_TRACE])])])
1786 # AC_CONFIG_MACRO_DIRS(DIR-1 [DIR-2 ... DIR-n])
1787 # --------------------------------------------
1788 # Declare directories containing additional macros for aclocal.
1789 # This macro can be called multiple times, and with multiple arguments.
1790 # Do not trace this macro; instead trace AC_CONFIG_MACRO_DIR_TRACE.
1791 # If no directory has been traced yet, then this macro also triggers
1792 # a trace of AC_CONFIG_MACRO_DIR on the first directory.
1793 AC_DEFUN([AC_CONFIG_MACRO_DIRS],
1794 [m4_map_args_w([$1], [_$0(_$0_USED()[$0], ], [)])])
1796 # AC_CONFIG_MACRO_DIR(DIR)
1797 # ------------------------
1798 # Declare directory containing additional macros for aclocal.
1799 # This macro exists for backward compatibility; while tools can trace this,
1800 # we recommend tracing AC_CONFIG_MACRO_DIR_TRACE instead. This macro can
1801 # only be used once, and must not be used after AC_CONFIG_MACRO_DIRS.
1802 AC_DEFUN([AC_CONFIG_MACRO_DIR],
1803 [_$0S(_$0S_USED()[$0], [$1])])
1806 ## --------------------- ##
1807 ## Requiring aux files. ##
1808 ## --------------------- ##
1810 # AC_REQUIRE_AUX_FILE(FILE)
1811 # -------------------------
1812 # This macro does nothing, it's a hook to be read with `autoconf --trace'.
1813 # It announces FILE is required in the auxdir.
1814 m4_define([AC_REQUIRE_AUX_FILE],
1815 [AS_LITERAL_WORD_IF([$1], [],
1816 [m4_fatal([$0: requires a literal argument])])])
1820 ## ----------------------------------- ##
1821 ## Getting the canonical system type. ##
1822 ## ----------------------------------- ##
1825 # configure --host=HOST --target=TARGET --build=BUILD
1828 # 1. Build defaults to the current platform, as determined by config.guess.
1829 # 2. Host defaults to build.
1830 # 3. Target defaults to host.
1833 # _AC_CANONICAL_SPLIT(THING)
1834 # --------------------------
1835 # Generate the variables THING, THING_{alias cpu vendor os}.
1836 m4_define([_AC_CANONICAL_SPLIT],
1839 *) AC_MSG_ERROR([invalid value of canonical $1]);;
1841 AC_SUBST([$1], [$ac_cv_$1])dnl
1842 ac_save_IFS=$IFS; IFS='-'
1845 AC_SUBST([$1_cpu], [$[1]])dnl
1846 AC_SUBST([$1_vendor], [$[2]])dnl
1848 [# Remember, the first character of IFS is used to create $]*,
1849 # except with old shells:
1852 case $$1_os in *\ *) $1_os=`echo "$$1_os" | sed 's/ /-/g'`;; esac
1853 AC_SUBST([$1_os])dnl
1854 ])# _AC_CANONICAL_SPLIT
1857 # AC_CANONICAL_BUILD
1858 # ------------------
1859 AC_DEFUN_ONCE([AC_CANONICAL_BUILD],
1860 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
1861 AC_REQUIRE_AUX_FILE([config.sub])dnl
1862 AC_REQUIRE_AUX_FILE([config.guess])dnl
1863 m4_divert_once([HELP_CANON],
1866 --build=BUILD configure for building on BUILD [guessed]]])dnl
1867 # Make sure we can run config.sub.
1868 $SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
1869 AC_MSG_ERROR([cannot run $SHELL $ac_aux_dir/config.sub])
1871 AC_CACHE_CHECK([build system type], [ac_cv_build],
1872 [ac_build_alias=$build_alias
1873 test "x$ac_build_alias" = x &&
1874 ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
1875 test "x$ac_build_alias" = x &&
1876 AC_MSG_ERROR([cannot guess build type; you must specify one])
1877 ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
1878 AC_MSG_ERROR([$SHELL $ac_aux_dir/config.sub $ac_build_alias failed])
1880 _AC_CANONICAL_SPLIT(build)
1881 ])# AC_CANONICAL_BUILD
1886 AC_DEFUN_ONCE([AC_CANONICAL_HOST],
1887 [AC_REQUIRE([AC_CANONICAL_BUILD])dnl
1888 m4_divert_once([HELP_CANON],
1889 [[ --host=HOST cross-compile to build programs to run on HOST [BUILD]]])dnl
1890 AC_CACHE_CHECK([host system type], [ac_cv_host],
1891 [if test "x$host_alias" = x; then
1892 ac_cv_host=$ac_cv_build
1894 ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
1895 AC_MSG_ERROR([$SHELL $ac_aux_dir/config.sub $host_alias failed])
1898 _AC_CANONICAL_SPLIT([host])
1899 ])# AC_CANONICAL_HOST
1902 # AC_CANONICAL_TARGET
1903 # -------------------
1904 AC_DEFUN_ONCE([AC_CANONICAL_TARGET],
1905 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
1906 AC_BEFORE([$0], [AC_ARG_PROGRAM])dnl
1907 m4_divert_once([HELP_CANON],
1908 [[ --target=TARGET configure for building compilers for TARGET [HOST]]])dnl
1909 AC_CACHE_CHECK([target system type], [ac_cv_target],
1910 [if test "x$target_alias" = x; then
1911 ac_cv_target=$ac_cv_host
1913 ac_cv_target=`$SHELL "$ac_aux_dir/config.sub" $target_alias` ||
1914 AC_MSG_ERROR([$SHELL $ac_aux_dir/config.sub $target_alias failed])
1917 _AC_CANONICAL_SPLIT([target])
1919 # The aliases save the names the user supplied, while $host etc.
1920 # will get canonicalized.
1921 test -n "$target_alias" &&
1922 test "$program_prefix$program_suffix$program_transform_name" = \
1924 program_prefix=${target_alias}-[]dnl
1925 ])# AC_CANONICAL_TARGET
1928 AU_ALIAS([AC_CANONICAL_SYSTEM], [AC_CANONICAL_TARGET])
1931 # AU::AC_VALIDATE_CACHED_SYSTEM_TUPLE([CMD])
1932 # ------------------------------------------
1933 # If the cache file is inconsistent with the current host,
1934 # target and build system types, execute CMD or print a default
1935 # error message. Now handled via _AC_ARG_VAR_PRECIOUS.
1936 AU_DEFUN([AC_VALIDATE_CACHED_SYSTEM_TUPLE], [])
1939 ## ---------------------- ##
1940 ## Caching test results. ##
1941 ## ---------------------- ##
1946 # Look for site- or system-specific initialization scripts.
1947 m4_define([AC_SITE_LOAD],
1948 [# Prefer an explicitly selected file to automatically selected ones.
1951 if test -n "$CONFIG_SITE"; then
1952 # We do not want a PATH search for config.site.
1953 case $CONFIG_SITE in @%:@((
1954 -*) ac_site_file1=./$CONFIG_SITE;;
1955 */*) ac_site_file1=$CONFIG_SITE;;
1956 *) ac_site_file1=./$CONFIG_SITE;;
1958 elif test "x$prefix" != xNONE; then
1959 ac_site_file1=$prefix/share/config.site
1960 ac_site_file2=$prefix/etc/config.site
1962 ac_site_file1=$ac_default_prefix/share/config.site
1963 ac_site_file2=$ac_default_prefix/etc/config.site
1965 for ac_site_file in "$ac_site_file1" "$ac_site_file2"
1967 test "x$ac_site_file" = xNONE && continue
1968 if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
1969 AC_MSG_NOTICE([loading site script $ac_site_file])
1970 sed 's/^/| /' "$ac_site_file" >&AS_MESSAGE_LOG_FD
1972 || AC_MSG_FAILURE([failed to load site script $ac_site_file])
1980 m4_define([AC_CACHE_LOAD],
1981 [if test -r "$cache_file"; then
1982 # Some versions of bash will fail to source /dev/null (special files
1983 # actually), so we avoid doing that. DJGPP emulates it as a regular file.
1984 if test /dev/null != "$cache_file" && test -f "$cache_file"; then
1985 AC_MSG_NOTICE([loading cache $cache_file])
1987 [[\\/]]* | ?:[[\\/]]* ) . "$cache_file";;
1988 *) . "./$cache_file";;
1992 AC_MSG_NOTICE([creating cache $cache_file])
2000 # Dump the cache to stdout. It can be in a pipe (this is a requirement).
2001 m4_define([_AC_CACHE_DUMP],
2002 [# The following way of writing the cache mishandles newlines in values,
2003 # but we know of no workaround that is simple, portable, and efficient.
2004 # So, we kill variables containing newlines.
2005 # Ultrix sh set writes to stderr and can't be redirected directly,
2006 # and sets the high bit in the cache file unless we assign to the vars.
2008 for ac_var in `(set) 2>&1 | sed -n ['s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p']`; do
2009 eval ac_val=\$$ac_var
2013 *_cv_*) AC_MSG_WARN([cache variable $ac_var contains a newline]) ;;
2016 _ | IFS | as_nl) ;; #(
2017 BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
2018 *) AS_UNSET([$ac_var]) ;;
2024 case $as_nl`(ac_space=' '; set) 2>&1` in #(
2025 *${as_nl}ac_space=\ *)
2026 # `set' does not quote correctly, so add quotes: double-quote
2027 # substitution turns \\\\ into \\, and sed turns \\ into \.
2030 s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"]
2033 # `set' quotes correctly as required by POSIX, so do not add quotes.
2034 sed -n ["/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"]
2045 # Allow a site initialization script to override cache values.
2046 m4_define([AC_CACHE_SAVE],
2047 [cat >confcache <<\_ACEOF
2048 # This file is a shell script that caches the results of configure
2049 # tests run on this system so they can be shared between configure
2050 # scripts and configure runs, see configure's option --config-cache.
2051 # It is not useful on other systems. If it contains results you don't
2052 # want to keep, you may remove or edit it.
2054 # config.status only pays attention to the cache file if you give it
2055 # the --recheck option to rerun configure.
2057 # `ac_cv_env_foo' variables (set or unset) will be overridden when
2058 # loading this file, other *unset* `ac_cv_foo' will be assigned the
2068 s/^\([^=]*\)=\(.*[{}].*\)$/test ${\1+y} || &/
2070 s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
2072 if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
2073 if test -w "$cache_file"; then
2074 if test "x$cache_file" != "x/dev/null"; then
2075 AC_MSG_NOTICE([updating cache $cache_file])
2076 if test ! -f "$cache_file" || test -h "$cache_file"; then
2077 cat confcache >"$cache_file"
2079 dnl Try to update the cache file atomically even on different mount points;
2080 dnl at the same time, avoid filename limitation issues in the common case.
2081 case $cache_file in #(
2083 mv -f confcache "$cache_file"$$ &&
2084 mv -f "$cache_file"$$ "$cache_file" ;; #(
2086 mv -f confcache "$cache_file" ;;
2091 AC_MSG_NOTICE([not updating unwritable cache $cache_file])
2094 rm -f confcache[]dnl
2098 # AC_CACHE_VAL(CACHE-ID, COMMANDS-TO-SET-IT)
2099 # ------------------------------------------
2100 # The name of shell var CACHE-ID must contain `_cv_' in order to get saved.
2101 # Should be dnl'ed. Try to catch common mistakes.
2102 m4_defun([AC_CACHE_VAL],
2103 [AS_LITERAL_WORD_IF([$1], [m4_if(m4_index(m4_quote($1), [_cv_]), [-1],
2104 [AC_DIAGNOSE([syntax],
2105 [$0($1, ...): suspicious cache-id, must contain _cv_ to be cached])])])dnl
2106 m4_if(m4_index([$2], [AC_DEFINE]), [-1], [],
2107 [AC_DIAGNOSE([syntax],
2108 [$0($1, ...): suspicious presence of an AC_DEFINE in the second argument, ]dnl
2109 [where no actions should be taken])])dnl
2110 m4_if(m4_index([$2], [AC_SUBST]), [-1], [],
2111 [AC_DIAGNOSE([syntax],
2112 [$0($1, ...): suspicious presence of an AC_SUBST in the second argument, ]dnl
2113 [where no actions should be taken])])dnl
2115 [_AS_ECHO_N([(cached) ])],
2120 # AC_CACHE_CHECK(MESSAGE, CACHE-ID, COMMANDS)
2121 # -------------------------------------------
2122 # Do not call this macro with a dnl right behind.
2123 m4_defun([AC_CACHE_CHECK],
2124 [AC_MSG_CHECKING([$1])
2125 AC_CACHE_VAL([$2], [$3])dnl
2126 AS_LITERAL_WORD_IF([$2],
2127 [AC_MSG_RESULT([$$2])],
2128 [AS_VAR_COPY([ac_res], [$2])
2129 AC_MSG_RESULT([$ac_res])])dnl
2132 # _AC_CACHE_CHECK_INT(MESSAGE, CACHE-ID, EXPRESSION,
2133 # [PROLOGUE = DEFAULT-INCLUDES], [IF-FAILS])
2134 # --------------------------------------------------------------
2135 AC_DEFUN([_AC_CACHE_CHECK_INT],
2136 [AC_CACHE_CHECK([$1], [$2],
2137 [AC_COMPUTE_INT([$2], [$3], [$4], [$5])])
2138 ])# _AC_CACHE_CHECK_INT
2142 ## ---------------------- ##
2143 ## Defining CPP symbols. ##
2144 ## ---------------------- ##
2147 # AC_DEFINE_TRACE_LITERAL(LITERAL-CPP-SYMBOL)
2148 # -------------------------------------------
2149 # Used by --trace to collect the list of AC_DEFINEd macros.
2150 m4_define([AC_DEFINE_TRACE_LITERAL],
2151 [m4_pattern_allow([^$1$])dnl
2152 AS_IDENTIFIER_IF([$1], [],
2153 [m4_warn([syntax], [AC_DEFINE: not an identifier: $1])])dnl
2154 ])# AC_DEFINE_TRACE_LITERAL
2157 # AC_DEFINE_TRACE(CPP-SYMBOL)
2158 # ---------------------------
2159 # This macro is a wrapper around AC_DEFINE_TRACE_LITERAL which filters
2160 # out non literal symbols. CPP-SYMBOL must not include any parameters.
2161 m4_define([AC_DEFINE_TRACE],
2162 [AS_LITERAL_WORD_IF([$1], [AC_DEFINE_TRACE_LITERAL(_m4_expand([$1]))])])
2165 # AC_DEFINE(VARIABLE, [VALUE], [DESCRIPTION])
2166 # -------------------------------------------
2167 # Set VARIABLE to VALUE, verbatim, or 1. Remember the value
2168 # and if VARIABLE is affected the same VALUE, do nothing, else
2169 # die. The third argument is used by autoheader.
2170 m4_define([AC_DEFINE], [_AC_DEFINE_Q([_$0], $@)])
2172 # _AC_DEFINE(STRING)
2173 # ------------------
2174 # Append the pre-expanded STRING and a newline to confdefs.h, as if by
2175 # a quoted here-doc.
2176 m4_define([_AC_DEFINE],
2177 [AS_ECHO(["AS_ESCAPE([[$1]])"]) >>confdefs.h])
2180 # AC_DEFINE_UNQUOTED(VARIABLE, [VALUE], [DESCRIPTION])
2181 # ----------------------------------------------------
2182 # Similar, but perform shell substitutions $ ` \ once on VALUE, as
2183 # in an unquoted here-doc.
2184 m4_define([AC_DEFINE_UNQUOTED], [_AC_DEFINE_Q([_$0], $@)])
2186 # _AC_DEFINE_UNQUOTED(STRING)
2187 # ---------------------------
2188 # Append the pre-expanded STRING and a newline to confdefs.h, as if
2189 # with an unquoted here-doc, but avoiding a fork in the common case of
2190 # no backslash, no command substitution, no complex variable
2191 # substitution (taking into account quadrigraphs as well). Also
2192 # avoid AS_ECHO if "#" is present to avoid confusing m4 with comments,
2193 # but quadrigraphs are fine in that case.
2194 m4_define([_AC_DEFINE_UNQUOTED],
2195 [m4_if(m4_bregexp([$1], [#\|\\\|`\|\(\$\|@S|@\)\((|{|@{:@\)]), [-1],
2196 [AS_ECHO(["AS_ESCAPE([$1], [""])"]) >>confdefs.h],
2197 [cat >>confdefs.h <<_ACEOF
2202 # _AC_DEFINE_Q(MACRO, VARIABLE, [VALUE], [DESCRIPTION])
2203 # -----------------------------------------------------
2204 # Internal function that performs common elements of AC_DEFINE{,_UNQUOTED}.
2205 # MACRO must take one argument, which is the fully expanded string to
2206 # append to confdefs.h as if by a possibly-quoted here-doc.
2208 # m4_index is roughly 5 to 8 times faster than m4_bpatsubst, so we use
2209 # m4_format rather than regex to grab prefix up to first (). AC_name
2210 # is defined with over-quotation, so that we can avoid m4_defn; this
2211 # is only safe because the name should not contain $.
2213 # Guarantee a match in m4_index, so as to avoid a bug with precision
2214 # -1 in m4_format in older m4.
2215 m4_define([_AC_DEFINE_Q],
2216 [m4_pushdef([AC_name], m4_format([[[%.*s]]], m4_index([$2(], [(]), [$2]))]dnl
2217 [AC_DEFINE_TRACE(AC_name)]dnl
2218 [m4_cond([m4_index([$3], [
2220 [m4_bregexp([[$3]], [[^\\]
2222 [m4_warn([syntax], [AC_DEFINE]m4_if([$1], [_AC_DEFINE], [],
2223 [[_UNQUOTED]])[: `$3' is not a valid preprocessor define value])])]dnl
2224 [m4_ifval([$4], [AH_TEMPLATE(AC_name, [$4])
2225 ])_m4_popdef([AC_name])]dnl
2226 [$1(m4_expand([[@%:@define] $2 ]m4_if([$#], 2, 1,
2227 [$3], [], [/**/], [[$3]])))
2232 ## -------------------------- ##
2233 ## Setting output variables. ##
2234 ## -------------------------- ##
2237 # AC_SUBST_TRACE(VARIABLE)
2238 # ------------------------
2239 # This macro is used with --trace to collect the list of substituted variables.
2240 m4_define([AC_SUBST_TRACE])
2243 # AC_SUBST(VARIABLE, [VALUE])
2244 # ---------------------------
2245 # Create an output variable from a shell VARIABLE. If VALUE is given
2246 # assign it to VARIABLE. Use `""' if you want to set VARIABLE to an
2247 # empty value, not an empty second argument.
2249 m4_define([AC_SUBST],
2250 [AS_IDENTIFIER_IF([$1], [],
2251 [m4_fatal([$0: `$1' is not a valid shell variable name])])]dnl
2252 [AC_SUBST_TRACE([$1])]dnl
2253 [m4_pattern_allow([^$1$])]dnl
2254 [m4_ifvaln([$2], [[$1]=$2])[]]dnl
2255 [m4_set_add([_AC_SUBST_VARS], [$1])])# AC_SUBST
2258 # AC_SUBST_FILE(VARIABLE)
2259 # -----------------------
2260 # Read the comments of the preceding macro.
2261 m4_define([AC_SUBST_FILE],
2262 [m4_pattern_allow([^$1$])dnl
2263 m4_append_uniq([_AC_SUBST_FILES], [$1], [
2268 ## --------------------------------------- ##
2269 ## Printing messages at autoconf runtime. ##
2270 ## --------------------------------------- ##
2272 # In fact, I think we should promote the use of m4_warn and m4_fatal
2273 # directly. This will also avoid to some people to get it wrong
2274 # between AC_FATAL and AC_MSG_ERROR.
2277 # AC_DIAGNOSE(CATEGORY, MESSAGE)
2278 # AC_FATAL(MESSAGE, [EXIT-STATUS])
2279 # --------------------------------
2280 m4_define([AC_DIAGNOSE], [m4_warn($@)])
2281 m4_define([AC_FATAL], [m4_fatal($@)])
2284 # AC_WARNING(MESSAGE)
2285 # -------------------
2286 # Report a MESSAGE to the user of autoconf if `-W' or `-W all' was
2288 m4_define([AC_WARNING],
2289 [AC_DIAGNOSE([syntax], [$1])])
2294 ## ---------------------------------------- ##
2295 ## Printing messages at configure runtime. ##
2296 ## ---------------------------------------- ##
2299 # AC_MSG_CHECKING(FEATURE)
2300 # ------------------------
2301 m4_define([AC_MSG_CHECKING],
2302 [{ _AS_ECHO_LOG([checking $1])
2303 _AS_ECHO_N([checking $1... ]); }dnl
2307 # AC_MSG_RESULT(RESULT)
2308 # ---------------------
2309 m4_define([AC_MSG_RESULT],
2310 [{ _AS_ECHO_LOG([result: $1])
2311 _AS_ECHO([$1]); }dnl
2315 # AC_MSG_WARN(PROBLEM)
2316 # AC_MSG_NOTICE(STRING)
2317 # AC_MSG_ERROR(ERROR, [EXIT-STATUS = 1])
2318 # AC_MSG_FAILURE(ERROR, [EXIT-STATUS = 1])
2319 # ----------------------------------------
2320 m4_copy([AS_WARN], [AC_MSG_WARN])
2321 m4_copy([AS_MESSAGE], [AC_MSG_NOTICE])
2322 m4_copy([AS_ERROR], [AC_MSG_ERROR])
2323 m4_define([AC_MSG_FAILURE],
2324 [{ AS_MESSAGE([error: in `$ac_pwd':], 2)
2326 See `config.log' for more details], [$2]); }])
2329 # _AC_MSG_LOG_CONFTEST
2330 # --------------------
2331 m4_define([_AC_MSG_LOG_CONFTEST],
2332 [AS_ECHO(["$as_me: failed program was:"]) >&AS_MESSAGE_LOG_FD
2333 sed 's/^/| /' conftest.$ac_ext >&AS_MESSAGE_LOG_FD
2337 # AU::AC_CHECKING(FEATURE)
2338 # ------------------------
2339 AU_DEFUN([AC_CHECKING],
2340 [AS_MESSAGE([checking $1...])])
2343 # AU::AC_MSG_RESULT_UNQUOTED(RESULT)
2344 # ----------------------------------
2345 # No escaping, so it performed also backtick substitution.
2346 AU_DEFUN([AC_MSG_RESULT_UNQUOTED],
2347 [_AS_ECHO_UNQUOTED([$as_me:${as_lineno-$LINENO}: result: $1], AS_MESSAGE_LOG_FD)
2348 _AS_ECHO_UNQUOTED([$1])[]dnl
2352 # AU::AC_VERBOSE(STRING)
2353 # ----------------------
2354 AU_ALIAS([AC_VERBOSE], [AC_MSG_RESULT])
2361 ## ---------------------------- ##
2362 ## Compiler-running mechanics. ##
2363 ## ---------------------------- ##
2366 # _AC_RUN_LOG(COMMAND, LOG-COMMANDS)
2367 # ----------------------------------
2368 # Eval COMMAND, save the exit status in ac_status, and log it. The return
2369 # code is 0 if COMMAND succeeded, so that it can be used directly in AS_IF
2371 AC_DEFUN([_AC_RUN_LOG],
2372 [{ { $2; } >&AS_MESSAGE_LOG_FD
2373 ($1) 2>&AS_MESSAGE_LOG_FD
2375 _AS_ECHO_LOG([\$? = $ac_status])
2376 test $ac_status = 0; }])
2379 # _AC_RUN_LOG_STDERR(COMMAND, LOG-COMMANDS)
2380 # -----------------------------------------
2381 # Run COMMAND, save its stderr into conftest.err, save the exit status
2382 # in ac_status, and log it. Don't forget to clean up conftest.err after
2384 # Note that when tracing, most shells will leave the traces in stderr
2385 # starting with "+": that's what this macro tries to address.
2386 # The return code is 0 if COMMAND succeeded, so that it can be used directly
2387 # in AS_IF constructs.
2388 AC_DEFUN([_AC_RUN_LOG_STDERR],
2389 [{ { $2; } >&AS_MESSAGE_LOG_FD
2392 if test -s conftest.err; then
2393 grep -v '^ *+' conftest.err >conftest.er1
2394 cat conftest.er1 >&AS_MESSAGE_LOG_FD
2395 mv -f conftest.er1 conftest.err
2397 _AS_ECHO_LOG([\$? = $ac_status])
2398 test $ac_status = 0; }])
2401 # _AC_RUN_LOG_LIMIT(COMMAND, LOG-COMMANDS, [LINES])
2402 # -------------------------------------------------
2403 # Like _AC_RUN_LOG, but only log LINES lines from stderr,
2404 # defaulting to 10 lines.
2405 AC_DEFUN([_AC_RUN_LOG_LIMIT],
2406 [{ { $2; } >&AS_MESSAGE_LOG_FD
2409 if test -s conftest.err; then
2410 sed 'm4_default([$3], [10])a\
2411 ... rest of stderr output deleted ...
2412 m4_default([$3], [10])q' conftest.err >conftest.er1
2413 cat conftest.er1 >&AS_MESSAGE_LOG_FD
2415 rm -f conftest.er1 conftest.err
2416 _AS_ECHO_LOG([\$? = $ac_status])
2417 test $ac_status = 0; }])
2420 # _AC_DO_ECHO(COMMAND)
2421 # --------------------
2422 # Echo COMMAND. This is designed to be used just before evaluating COMMAND.
2423 AC_DEFUN([_AC_DO_ECHO],
2424 [m4_if([$1], [$ac_try], [], [ac_try="$1"
2426 dnl If the string contains '\"', '`', or '\\', then just echo it rather
2427 dnl than expanding it. This is a hack, but it is safer, while also
2428 dnl typically expanding simple substrings like '$CC', which is what we want.
2430 dnl Much of this macro body is quoted, to work around misuses like
2431 dnl `AC_CHECK_FUNC(sigblock, , AC_CHECK_LIB(bsd, sigblock))',
2432 dnl which underquotes the 3rd arg and would misbehave if we didn't quote here.
2433 dnl The "(($ac_try" instead of $ac_try avoids problems with even-worse
2434 dnl underquoting misuses, such as
2435 dnl `AC_CHECK_FUNC(foo, , AC_CHECK_LIB(a, foo, , AC_CHECK_LIB(b, foo)))'.
2436 dnl We normally wouldn't bother with this kind of workaround for invalid code
2437 dnl but this change was put in just before Autoconf 2.60 and we wanted to
2438 dnl minimize the integration hassle.
2439 [[case "(($ac_try" in
2440 *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
2441 *) ac_try_echo=$ac_try;;
2443 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""]
2444 AS_ECHO(["$ac_try_echo"])])
2448 # Eval COMMAND, save the exit status in ac_status, and log it.
2449 # For internal use only.
2451 [_AC_RUN_LOG([eval "$1"],
2452 [_AC_DO_ECHO([$1])])])
2455 # _AC_DO_STDERR(COMMAND)
2456 # ----------------------
2457 # Like _AC_RUN_LOG_STDERR, but eval (instead of running) COMMAND.
2458 AC_DEFUN([_AC_DO_STDERR],
2459 [_AC_RUN_LOG_STDERR([eval "$1"],
2460 [_AC_DO_ECHO([$1])])])
2463 # _AC_DO_VAR(VARIABLE)
2464 # --------------------
2465 # Evaluate "$VARIABLE", which should be a valid shell command.
2466 # The purpose of this macro is to write "configure:123: command line"
2467 # into config.log for every test run.
2468 AC_DEFUN([_AC_DO_VAR],
2472 # _AC_DO_TOKENS(COMMAND)
2473 # ----------------------
2474 # Like _AC_DO_VAR, but execute COMMAND instead, where COMMAND is a series of
2475 # tokens of the shell command language.
2476 AC_DEFUN([_AC_DO_TOKENS],
2478 _AC_DO([$ac_try]); }])
2481 # _AC_DO_LIMIT(COMMAND, [LINES])
2482 # ------------------------------
2483 # Like _AC_DO, but limit the amount of stderr lines logged to LINES.
2484 # For internal use only.
2485 AC_DEFUN([_AC_DO_LIMIT],
2486 [_AC_RUN_LOG_LIMIT([eval "$1"],
2487 [_AC_DO_ECHO([$1])], [$2])])
2492 # Eval COMMAND, save the exit status in ac_status, and log it.
2493 # Unlike _AC_DO, this macro mishandles quoted arguments in some cases.
2494 # It is present only for backward compatibility with previous Autoconf versions.
2495 AC_DEFUN([_AC_EVAL],
2496 [_AC_RUN_LOG([eval $1],
2497 [eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$1\""])])
2500 # _AC_EVAL_STDERR(COMMAND)
2501 # ------------------------
2502 # Like _AC_RUN_LOG_STDERR, but eval (instead of running) COMMAND.
2503 # Unlike _AC_DO_STDERR, this macro mishandles quoted arguments in some cases.
2504 # It is present only for backward compatibility with previous Autoconf versions.
2505 AC_DEFUN([_AC_EVAL_STDERR],
2506 [_AC_RUN_LOG_STDERR([eval $1],
2507 [eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$1\""])])
2510 # AC_TRY_EVAL(VARIABLE)
2511 # ---------------------
2512 # Evaluate $VARIABLE, which should be a valid shell command.
2513 # The purpose of this macro is to write "configure:123: command line"
2514 # into config.log for every test run.
2516 # The AC_TRY_EVAL and AC_TRY_COMMAND macros are dangerous and
2517 # undocumented, and should not be used.
2518 # They may be removed or their API changed in a future release.
2519 # Autoconf itself no longer uses these two macros; they are present
2520 # only for backward compatibility with previous versions of Autoconf.
2521 # Not every shell command will work due to problems with eval
2522 # and quoting, and the rules for exactly what does work are tricky.
2523 # Worse, due to double-expansion during evaluation, arbitrary unintended
2524 # shell commands could be executed in some situations.
2525 AC_DEFUN([AC_TRY_EVAL],
2529 # AC_TRY_COMMAND(COMMAND)
2530 # -----------------------
2531 # Like AC_TRY_EVAL, but execute COMMAND instead, where COMMAND is a series of
2532 # tokens of the shell command language.
2533 # This macro should not be used; see the comments under AC_TRY_EVAL for why.
2534 AC_DEFUN([AC_TRY_COMMAND],
2536 _AC_EVAL([$ac_try]); }])
2539 # AC_RUN_LOG(COMMAND)
2540 # -------------------
2541 AC_DEFUN([AC_RUN_LOG],
2543 [AS_ECHO(["$as_me:${as_lineno-$LINENO}: AS_ESCAPE([$1])"])])])
2548 ## ------------------------ ##
2549 ## Examining declarations. ##
2550 ## ------------------------ ##
2553 # _AC_PREPROC_IFELSE_BODY
2554 # -----------------------
2555 # Shell function body for _AC_PREPROC_IFELSE.
2556 m4_define([_AC_PREPROC_IFELSE_BODY],
2557 [ AS_LINENO_PUSH([$[]1])
2558 AS_IF([_AC_DO_STDERR([$ac_cpp conftest.$ac_ext]) > conftest.i && {
2559 test -z "$ac_[]_AC_LANG_ABBREV[]_preproc_warn_flag$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
2560 test ! -s conftest.err
2563 [_AC_MSG_LOG_CONFTEST
2566 AS_SET_STATUS([$ac_retval])
2567 ])# _AC_PREPROC_IFELSE_BODY
2570 # _AC_PREPROC_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2571 # ----------------------------------------------------------------
2572 # Try to preprocess PROGRAM.
2574 # This macro can be used during the selection of a preprocessor.
2575 # eval is necessary to expand ac_cpp.
2576 AC_DEFUN([_AC_PREPROC_IFELSE],
2577 [AC_REQUIRE_SHELL_FN([ac_fn_]_AC_LANG_ABBREV[_try_cpp],
2578 [AS_FUNCTION_DESCRIBE([ac_fn_]_AC_LANG_ABBREV[_try_cpp], [LINENO],
2579 [Try to preprocess conftest.$ac_ext, and return whether this succeeded.])],
2581 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
2582 [AS_IF([ac_fn_[]_AC_LANG_ABBREV[]_try_cpp "$LINENO"], [$2], [$3])
2583 rm -f conftest.err conftest.i[]m4_ifval([$1], [ conftest.$ac_ext])[]dnl
2584 ])# _AC_PREPROC_IFELSE
2586 # AC_PREPROC_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2587 # ---------------------------------------------------------------
2588 # Try to preprocess PROGRAM. Requires that the preprocessor for the
2589 # current language was checked for, hence do not use this macro in macros
2590 # looking for a preprocessor.
2591 AC_DEFUN([AC_PREPROC_IFELSE],
2592 [AC_LANG_PREPROC_REQUIRE()dnl
2593 _AC_PREPROC_IFELSE($@)])
2596 # AC_TRY_CPP(INCLUDES, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2597 # ---------------------------------------------------------
2598 # AC_TRY_CPP is used to check whether particular header files exist.
2599 # (But it actually tests whether INCLUDES produces no CPP errors.)
2601 # INCLUDES are not defaulted and are double quoted.
2602 AU_DEFUN([AC_TRY_CPP],
2603 [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[$1]])], [$2], [$3])])
2606 # AC_EGREP_CPP(PATTERN, PROGRAM,
2607 # [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
2608 # ------------------------------------------------------
2609 # Because this macro is used by AC_PROG_GCC_TRADITIONAL, which must
2610 # come early, it is not included in AC_BEFORE checks.
2611 AC_DEFUN([AC_EGREP_CPP],
2612 [AC_LANG_PREPROC_REQUIRE()dnl
2613 AC_REQUIRE([AC_PROG_EGREP])dnl
2614 AC_LANG_CONFTEST([AC_LANG_SOURCE([[$2]])])
2615 AS_IF([dnl eval is necessary to expand ac_cpp.
2616 dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
2617 (eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
2618 dnl Quote $1 to prevent m4 from eating character classes
2619 $EGREP "[$1]" >/dev/null 2>&1],
2626 # AC_EGREP_HEADER(PATTERN, HEADER-FILE,
2627 # [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
2628 # ---------------------------------------------------------
2629 AC_DEFUN([AC_EGREP_HEADER],
2637 ## ------------------ ##
2638 ## Examining syntax. ##
2639 ## ------------------ ##
2641 # _AC_COMPILE_IFELSE_BODY
2642 # -----------------------
2643 # Shell function body for _AC_COMPILE_IFELSE.
2644 m4_define([_AC_COMPILE_IFELSE_BODY],
2645 [ AS_LINENO_PUSH([$[]1])
2646 rm -f conftest.$ac_objext
2647 AS_IF([_AC_DO_STDERR($ac_compile) && {
2648 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
2649 test ! -s conftest.err
2650 } && test -s conftest.$ac_objext],
2652 [_AC_MSG_LOG_CONFTEST
2655 AS_SET_STATUS([$ac_retval])
2656 ])# _AC_COMPILE_IFELSE_BODY
2659 # _AC_COMPILE_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2660 # ----------------------------------------------------------------
2661 # Try to compile PROGRAM.
2662 # This macro can be used during the selection of a compiler.
2663 AC_DEFUN([_AC_COMPILE_IFELSE],
2664 [AC_REQUIRE_SHELL_FN([ac_fn_]_AC_LANG_ABBREV[_try_compile],
2665 [AS_FUNCTION_DESCRIBE([ac_fn_]_AC_LANG_ABBREV[_try_compile], [LINENO],
2666 [Try to compile conftest.$ac_ext, and return whether this succeeded.])],
2668 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
2669 [AS_IF([ac_fn_[]_AC_LANG_ABBREV[]_try_compile "$LINENO"], [$2], [$3])
2670 rm -f core conftest.err conftest.$ac_objext[]m4_ifval([$1], [ conftest.$ac_ext])[]dnl
2671 ])# _AC_COMPILE_IFELSE
2674 # AC_COMPILE_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2675 # ---------------------------------------------------------------
2676 # Try to compile PROGRAM. Requires that the compiler for the current
2677 # language was checked for, hence do not use this macro in macros looking
2679 AC_DEFUN([AC_COMPILE_IFELSE],
2680 [AC_LANG_COMPILER_REQUIRE()dnl
2681 _AC_COMPILE_IFELSE($@)])
2684 # AC_TRY_COMPILE(INCLUDES, FUNCTION-BODY,
2685 # [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2686 # ---------------------------------------------------
2687 AU_DEFUN([AC_TRY_COMPILE],
2688 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[$1]], [[$2]])], [$3], [$4])])
2692 ## --------------------- ##
2693 ## Examining libraries. ##
2694 ## --------------------- ##
2697 # _AC_LINK_IFELSE_BODY
2698 # --------------------
2699 # Shell function body for _AC_LINK_IFELSE.
2700 m4_define([_AC_LINK_IFELSE_BODY],
2701 [ AS_LINENO_PUSH([$[]1])
2702 rm -f conftest.$ac_objext conftest$ac_exeext
2703 AS_IF([_AC_DO_STDERR($ac_link) && {
2704 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
2705 test ! -s conftest.err
2706 } && test -s conftest$ac_exeext && {
2707 test "$cross_compiling" = yes ||
2708 AS_TEST_X([conftest$ac_exeext])
2711 [_AC_MSG_LOG_CONFTEST
2713 # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
2714 # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
2715 # interfere with the next link command; also delete a directory that is
2716 # left behind by Apple's compiler. We do this before executing the actions.
2717 rm -rf conftest.dSYM conftest_ipa8_conftest.oo
2719 AS_SET_STATUS([$ac_retval])
2720 ])# _AC_LINK_IFELSE_BODY
2723 # _AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2724 # -------------------------------------------------------------
2725 # Try to link PROGRAM.
2726 # This macro can be used during the selection of a compiler.
2728 # Test that resulting file is executable; see the problem reported by mwoehlke
2729 # in <https://lists.gnu.org/archive/html/bug-coreutils/2006-10/msg00048.html>.
2730 # But skip the test when cross-compiling, to prevent problems like the one
2731 # reported by Chris Johns in
2732 # <https://lists.gnu.org/archive/html/autoconf/2007-03/msg00085.html>.
2734 AC_DEFUN([_AC_LINK_IFELSE],
2735 [AC_REQUIRE_SHELL_FN([ac_fn_]_AC_LANG_ABBREV[_try_link],
2736 [AS_FUNCTION_DESCRIBE([ac_fn_]_AC_LANG_ABBREV[_try_link], [LINENO],
2737 [Try to link conftest.$ac_ext, and return whether this succeeded.])],
2739 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
2740 [AS_IF([ac_fn_[]_AC_LANG_ABBREV[]_try_link "$LINENO"], [$2], [$3])
2741 rm -f core conftest.err conftest.$ac_objext \
2742 conftest$ac_exeext[]m4_ifval([$1], [ conftest.$ac_ext])[]dnl
2746 # AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2747 # ------------------------------------------------------------
2748 # Try to link PROGRAM. Requires that the compiler for the current
2749 # language was checked for, hence do not use this macro in macros looking
2751 AC_DEFUN([AC_LINK_IFELSE],
2752 [AC_LANG_COMPILER_REQUIRE()dnl
2753 _AC_LINK_IFELSE($@)])
2756 # AC_TRY_LINK(INCLUDES, FUNCTION-BODY,
2757 # [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2758 # ------------------------------------------------
2759 # Contrarily to AC_LINK_IFELSE, this macro double quote its first two args.
2760 AU_DEFUN([AC_TRY_LINK],
2761 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[$1]], [[$2]])], [$3], [$4])])
2764 # AC_COMPILE_CHECK(ECHO-TEXT, INCLUDES, FUNCTION-BODY,
2765 # ACTION-IF-TRUE, [ACTION-IF-FALSE])
2766 # ---------------------------------------------------
2767 AU_DEFUN([AC_COMPILE_CHECK],
2768 [m4_ifvaln([$1], [AC_MSG_CHECKING([for $1])])dnl
2769 AC_LINK_IFELSE([AC_LANG_PROGRAM([[$2]], [[$3]])], [$4], [$5])])
2774 ## ------------------------------- ##
2775 ## Checking for runtime features. ##
2776 ## ------------------------------- ##
2779 # _AC_RUN_IFELSE_BODY
2780 # -------------------
2781 # Shell function body for _AC_RUN_IFELSE.
2782 m4_define([_AC_RUN_IFELSE_BODY],
2783 [ AS_LINENO_PUSH([$[]1])
2784 AS_IF([_AC_DO_VAR(ac_link) && _AC_DO_TOKENS(./conftest$ac_exeext)],
2786 [AS_ECHO(["$as_me: program exited with status $ac_status"]) >&AS_MESSAGE_LOG_FD
2787 _AC_MSG_LOG_CONFTEST
2788 ac_retval=$ac_status])
2789 rm -rf conftest.dSYM conftest_ipa8_conftest.oo
2791 AS_SET_STATUS([$ac_retval])
2792 ])# _AC_RUN_IFELSE_BODY
2795 # _AC_RUN_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
2796 # ------------------------------------------------------------
2797 # Compile, link, and run.
2798 # This macro can be used during the selection of a compiler.
2799 # We also remove conftest.o as if the compilation fails, some compilers
2800 # don't remove it. We remove gmon.out and bb.out, which may be
2801 # created during the run if the program is built with profiling support.
2802 AC_DEFUN([_AC_RUN_IFELSE],
2803 [AC_REQUIRE_SHELL_FN([ac_fn_]_AC_LANG_ABBREV[_try_run],
2804 [AS_FUNCTION_DESCRIBE([ac_fn_]_AC_LANG_ABBREV[_try_run], [LINENO],
2805 [Try to run conftest.$ac_ext, and return whether this succeeded.
2806 Assumes that executables *can* be run.])],
2808 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])]dnl
2809 [AS_IF([ac_fn_[]_AC_LANG_ABBREV[]_try_run "$LINENO"], [$2], [$3])
2810 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
2811 conftest.$ac_objext conftest.beam[]m4_ifval([$1], [ conftest.$ac_ext])[]dnl
2814 # AC_RUN_IFELSE(PROGRAM,
2815 # [ACTION-IF-TRUE], [ACTION-IF-FALSE],
2816 # [ACTION-IF-CROSS-COMPILING = RUNTIME-ERROR])
2817 # ----------------------------------------------------------
2818 # Compile, link, and run. Requires that the compiler for the current
2819 # language was checked for, hence do not use this macro in macros looking
2821 AC_DEFUN([AC_RUN_IFELSE],
2822 [AC_LANG_COMPILER_REQUIRE()dnl
2824 [AC_DIAGNOSE([cross],
2825 [$0 called without default to allow cross compiling])])dnl
2826 AS_IF([test "$cross_compiling" = yes],
2828 [AC_MSG_FAILURE([cannot run test program while cross compiling])])],
2829 [_AC_RUN_IFELSE($@)])
2833 # AC_TRY_RUN(PROGRAM,
2834 # [ACTION-IF-TRUE], [ACTION-IF-FALSE],
2835 # [ACTION-IF-CROSS-COMPILING = RUNTIME-ERROR])
2836 # -------------------------------------------------------
2837 AU_DEFUN([AC_TRY_RUN],
2838 [AC_RUN_IFELSE([AC_LANG_SOURCE([[$1]])], [$2], [$3], [$4])])
2842 ## ------------------------------------- ##
2843 ## Checking for the existence of files. ##
2844 ## ------------------------------------- ##
2846 # AC_CHECK_FILE(FILE, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
2847 # -------------------------------------------------------------
2849 # Check for the existence of FILE.
2850 AC_DEFUN([AC_CHECK_FILE],
2851 [AC_DIAGNOSE([cross],
2852 [cannot check for file existence when cross compiling])dnl
2853 AS_VAR_PUSHDEF([ac_File], [ac_cv_file_$1])dnl
2854 AC_CACHE_CHECK([for $1], [ac_File],
2855 [test "$cross_compiling" = yes &&
2856 AC_MSG_ERROR([cannot check for file existence when cross compiling])
2857 if test -r "$1"; then
2858 AS_VAR_SET([ac_File], [yes])
2860 AS_VAR_SET([ac_File], [no])
2862 AS_VAR_IF([ac_File], [yes], [$2], [$3])
2863 AS_VAR_POPDEF([ac_File])dnl
2867 # _AC_CHECK_FILES(FILE)
2868 # ---------------------
2869 # Helper to AC_CHECK_FILES, which generates two of the three arguments
2870 # to AC_CHECK_FILE based on FILE.
2871 m4_define([_AC_CHECK_FILES],
2872 [[$1], [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$1]), [1],
2873 [Define to 1 if you have the file `$1'.])]])
2876 # AC_CHECK_FILES(FILE..., [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
2877 # -----------------------------------------------------------------
2878 # For each word in the whitespace-separated FILE list, perform either
2879 # ACTION-IF-FOUND or ACTION-IF-NOT-FOUND. For files that exist, also
2880 # provide the preprocessor variable HAVE_FILE.
2881 AC_DEFUN([AC_CHECK_FILES],
2882 [m4_map_args_w([$1], [AC_CHECK_FILE(_$0(], [)[$2], [$3])])])
2885 ## ------------------------------- ##
2886 ## Checking for declared symbols. ##
2887 ## ------------------------------- ##
2890 # _AC_UNDECLARED_WARNING
2891 # ----------------------
2892 # Set ac_[]_AC_LANG_ABBREV[]_decl_warn_flag=yes if the compiler uses a warning,
2893 # not a more-customary error, to report some undeclared identifiers. Fail when
2894 # an affected compiler warns also on valid input. _AC_PROG_PREPROC_WORKS_IFELSE
2895 # solves a related problem.
2896 AC_DEFUN([_AC_UNDECLARED_WARNING],
2897 [# The Clang compiler raises a warning for an undeclared identifier that matches
2898 # a compiler builtin function. All extant Clang versions are affected, as of
2899 # Clang 3.6.0. Test a builtin known to every version. This problem affects the
2900 # C and Objective C languages, but Clang does report an error under C++ and
2903 # Passing -fno-builtin to the compiler would suppress this problem. That
2904 # strategy would have the advantage of being insensitive to stray warnings, but
2905 # it would make tests less realistic.
2906 AC_CACHE_CHECK([how $[]_AC_CC[] reports undeclared, standard C functions],
2907 [ac_cv_[]_AC_LANG_ABBREV[]_decl_report],
2908 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [(void) strchr;])],
2909 [AS_IF([test -s conftest.err], [dnl
2910 # For AC_CHECK_DECL to react to warnings, the compiler must be silent on
2911 # valid AC_CHECK_DECL input. No library function is consistently available
2912 # on freestanding implementations, so test against a dummy declaration.
2913 # Include always-available headers on the off chance that they somehow
2915 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([dnl
2920 extern void ac_decl (int, char *);],
2921 [@%:@ifdef __cplusplus
2922 (void) ac_decl ((int) 0, (char *) 0);
2928 [AS_IF([test -s conftest.err],
2929 [AC_MSG_FAILURE([cannot detect from compiler exit status or warnings])],
2930 [ac_cv_[]_AC_LANG_ABBREV[]_decl_report=warning])],
2931 [AC_MSG_FAILURE([cannot compile a simple declaration test])])],
2932 [AC_MSG_FAILURE([compiler does not report undeclared identifiers])])],
2933 [ac_cv_[]_AC_LANG_ABBREV[]_decl_report=error])])
2935 case $ac_cv_[]_AC_LANG_ABBREV[]_decl_report in
2936 warning) ac_[]_AC_LANG_ABBREV[]_decl_warn_flag=yes ;;
2937 *) ac_[]_AC_LANG_ABBREV[]_decl_warn_flag= ;;
2939 ])# _AC_UNDECLARED_WARNING
2941 # _AC_CHECK_DECL_BODY
2942 # -------------------
2943 # Shell function body for AC_CHECK_DECL.
2944 m4_define([_AC_CHECK_DECL_BODY],
2945 [ AS_LINENO_PUSH([$[]1])
2946 # Initialize each $ac_[]_AC_LANG_ABBREV[]_decl_warn_flag once.
2947 AC_DEFUN([_AC_UNDECLARED_WARNING_]_AC_LANG_ABBREV,
2948 [_AC_UNDECLARED_WARNING])dnl
2949 AC_REQUIRE([_AC_UNDECLARED_WARNING_]_AC_LANG_ABBREV)dnl
2950 [as_decl_name=`echo $][2|sed 's/ *(.*//'`]
2951 [as_decl_use=`echo $][2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`]
2952 AC_CACHE_CHECK([whether $as_decl_name is declared], [$[]3],
2953 [ac_save_werror_flag=$ac_[]_AC_LANG_ABBREV[]_werror_flag
2954 ac_[]_AC_LANG_ABBREV[]_werror_flag="$ac_[]_AC_LANG_ABBREV[]_decl_warn_flag$ac_[]_AC_LANG_ABBREV[]_werror_flag"
2955 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$[]4],
2956 [@%:@ifndef $[]as_decl_name
2957 @%:@ifdef __cplusplus
2958 (void) $[]as_decl_use;
2960 (void) $[]as_decl_name;
2964 [AS_VAR_SET([$[]3], [yes])],
2965 [AS_VAR_SET([$[]3], [no])])])
2966 ac_[]_AC_LANG_ABBREV[]_werror_flag=$ac_save_werror_flag
2968 ])# _AC_CHECK_DECL_BODY
2970 # AC_CHECK_DECL(SYMBOL,
2971 # [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
2972 # [INCLUDES = DEFAULT-INCLUDES])
2973 # -------------------------------------------------------
2974 # Check whether SYMBOL (a function, variable, or constant) is declared.
2975 AC_DEFUN([AC_CHECK_DECL],
2976 [AC_REQUIRE_SHELL_FN([ac_fn_]_AC_LANG_ABBREV[_check_decl],
2977 [AS_FUNCTION_DESCRIBE([ac_fn_]_AC_LANG_ABBREV[_check_decl],
2978 [LINENO SYMBOL VAR INCLUDES],
2979 [Tests whether SYMBOL is declared in INCLUDES, setting cache variable
2980 VAR accordingly.])],
2982 [AS_VAR_PUSHDEF([ac_Symbol], [ac_cv_have_decl_$1])]dnl
2983 [ac_fn_[]_AC_LANG_ABBREV[]_check_decl ]dnl
2984 ["$LINENO" "$1" "ac_Symbol" "AS_ESCAPE([AC_INCLUDES_DEFAULT([$4])], [""])"
2985 AS_VAR_IF([ac_Symbol], [yes], [$2], [$3])
2986 AS_VAR_POPDEF([ac_Symbol])dnl
2990 # _AC_CHECK_DECLS(SYMBOL, ACTION-IF_FOUND, ACTION-IF-NOT-FOUND,
2992 # -------------------------------------------------------------
2993 # Helper to AC_CHECK_DECLS, which generates the check for a single
2994 # SYMBOL with INCLUDES, performs the AC_DEFINE, then expands
2995 # ACTION-IF-FOUND or ACTION-IF-NOT-FOUND.
2996 m4_define([_AC_CHECK_DECLS],
2997 [AC_CHECK_DECL([$1], [ac_have_decl=1], [ac_have_decl=0], [$4])]dnl
2998 [AC_DEFINE_UNQUOTED(AS_TR_CPP(m4_bpatsubst(HAVE_DECL_[$1],[ *(.*])),
3000 [Define to 1 if you have the declaration of `$1',
3001 and to 0 if you don't.])]dnl
3002 [m4_ifvaln([$2$3], [AS_IF([test $ac_have_decl = 1], [$2], [$3])])])
3004 # AC_CHECK_DECLS(SYMBOLS,
3005 # [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
3006 # [INCLUDES = DEFAULT-INCLUDES])
3007 # --------------------------------------------------------
3008 # Defines HAVE_DECL_SYMBOL to 1 if declared, 0 otherwise. See the
3009 # documentation for a detailed explanation of this difference with
3010 # other AC_CHECK_*S macros. SYMBOLS is an m4 list.
3011 AC_DEFUN([AC_CHECK_DECLS],
3012 [m4_map_args_sep([_$0(], [, [$2], [$3], [$4])], [], $1)])
3015 # _AC_CHECK_DECL_ONCE(SYMBOL)
3016 # ---------------------------
3017 # Check for a single SYMBOL once.
3018 m4_define([_AC_CHECK_DECL_ONCE],
3019 [AC_DEFUN([_AC_Check_Decl_$1], [_AC_CHECK_DECLS([$1])])]dnl
3020 [AC_REQUIRE([_AC_Check_Decl_$1])])
3022 # AC_CHECK_DECLS_ONCE(SYMBOLS)
3023 # ----------------------------
3024 # Like AC_CHECK_DECLS(SYMBOLS), but do it at most once.
3025 AC_DEFUN([AC_CHECK_DECLS_ONCE],
3026 [m4_map_args_sep([_AC_CHECK_DECL_ONCE(], [)], [], $1)])
3030 ## ---------------------------------- ##
3031 ## Replacement of library functions. ##
3032 ## ---------------------------------- ##
3035 # AC_CONFIG_LIBOBJ_DIR(DIRNAME)
3036 # -----------------------------
3037 # Announce LIBOBJ replacement files are in $top_srcdir/DIRNAME.
3038 AC_DEFUN_ONCE([AC_CONFIG_LIBOBJ_DIR],
3039 [m4_divert_text([DEFAULTS], [ac_config_libobj_dir=$1])])
3042 # AC_LIBSOURCE(FILE-NAME)
3043 # -----------------------
3044 # Announce we might need the file `FILE-NAME'.
3045 m4_define([AC_LIBSOURCE], [])
3048 # AC_LIBSOURCES([FILE-NAME1, ...])
3049 # --------------------------------
3050 # Announce we might need these files.
3051 AC_DEFUN([AC_LIBSOURCES],
3052 [m4_map_args([AC_LIBSOURCE], $1)])
3055 # _AC_LIBOBJ(FILE-NAME-NOEXT, ACTION-IF-INDIR)
3056 # --------------------------------------------
3057 # We need `FILE-NAME-NOEXT.o', save this into `LIBOBJS'.
3058 m4_define([_AC_LIBOBJ],
3059 [case " $LIB@&t@OBJS " in
3060 *" $1.$ac_objext "* ) ;;
3061 *) AC_SUBST([LIB@&t@OBJS], ["$LIB@&t@OBJS $1.$ac_objext"]) ;;
3066 # AC_LIBOBJ(FILE-NAME-NOEXT)
3067 # --------------------------
3068 # We need `FILE-NAME-NOEXT.o', save this into `LIBOBJS'.
3069 AC_DEFUN([AC_LIBOBJ],
3070 [_AC_LIBOBJ([$1])]dnl
3071 [AS_LITERAL_WORD_IF([$1], [AC_LIBSOURCE([$1.c])],
3072 [AC_DIAGNOSE([syntax], [$0($1): you should use literals])])])
3075 # _AC_LIBOBJS_NORMALIZE
3076 # ---------------------
3077 # Clean up LIBOBJS and LTLIBOBJS so that they work with 1. ac_objext,
3078 # 2. Automake's ANSI2KNR, 3. Libtool, 4. combination of the three.
3079 # Used with AC_CONFIG_COMMANDS_PRE.
3080 AC_DEFUN([_AC_LIBOBJS_NORMALIZE],
3083 m4_ifndef([AM_C_PROTOTYPES], [U=
3085 for ac_i in : $LIB@&t@OBJS; do test "x$ac_i" = x: && continue
3086 # 1. Remove the extension, and $U if already installed.
3087 ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
3088 ac_i=`AS_ECHO(["$ac_i"]) | sed "$ac_script"`
3089 # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR
3090 # will be set to the directory where LIBOBJS objects are built.
3091 AS_VAR_APPEND([ac_libobjs], [" \${LIBOBJDIR}$ac_i\$U.$ac_objext"])
3092 AS_VAR_APPEND([ac_ltlibobjs], [" \${LIBOBJDIR}$ac_i"'$U.lo'])
3094 AC_SUBST([LIB@&t@OBJS], [$ac_libobjs])
3095 AC_SUBST([LTLIBOBJS], [$ac_ltlibobjs])
3099 ## ----------------------------------- ##
3100 ## Checking compiler characteristics. ##
3101 ## ----------------------------------- ##
3104 # _AC_COMPUTE_INT_COMPILE(EXPRESSION, VARIABLE, PROLOGUE, [IF-SUCCESS],
3106 # ---------------------------------------------------------------------
3107 # Compute the integer EXPRESSION and store the result in the VARIABLE.
3108 # Works OK if cross compiling, but assumes twos-complement arithmetic.
3109 m4_define([_AC_COMPUTE_INT_COMPILE],
3110 [# Depending upon the size, compute the lo and hi bounds.
3111 _AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) >= 0])],
3114 _AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) <= $ac_mid])],
3115 [ac_hi=$ac_mid; break],
3116 [AS_VAR_ARITH([ac_lo], [$ac_mid + 1])
3117 if test $ac_lo -le $ac_mid; then
3121 AS_VAR_ARITH([ac_mid], [2 '*' $ac_mid + 1])])
3123 [AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) < 0])],
3126 _AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) >= $ac_mid])],
3127 [ac_lo=$ac_mid; break],
3128 [AS_VAR_ARITH([ac_hi], ['(' $ac_mid ')' - 1])
3129 if test $ac_mid -le $ac_hi; then
3133 AS_VAR_ARITH([ac_mid], [2 '*' $ac_mid])])
3136 # Binary search between lo and hi bounds.
3137 while test "x$ac_lo" != "x$ac_hi"; do
3138 AS_VAR_ARITH([ac_mid], ['(' $ac_hi - $ac_lo ')' / 2 + $ac_lo])
3139 _AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) <= $ac_mid])],
3141 [AS_VAR_ARITH([ac_lo], ['(' $ac_mid ')' + 1])])
3143 case $ac_lo in @%:@((
3144 ?*) AS_VAR_SET([$2], [$ac_lo]); $4 ;;
3147 ])# _AC_COMPUTE_INT_COMPILE
3150 # _AC_COMPUTE_INT_RUN(EXPRESSION, VARIABLE, PROLOGUE, [IF-SUCCESS],
3152 # -----------------------------------------------------------------
3153 # Store the evaluation of the integer EXPRESSION in VARIABLE.
3155 # AC_LANG_INT_SAVE intentionally does not end the file in a newline, so
3156 # we must add one to make it a text file before passing it to read.
3157 m4_define([_AC_COMPUTE_INT_RUN],
3158 [_AC_RUN_IFELSE([AC_LANG_INT_SAVE([$3], [$1])],
3159 [echo >>conftest.val; read $2 <conftest.val; $4], [$5])
3161 ])# _AC_COMPUTE_INT_RUN
3164 # _AC_COMPUTE_INT_BODY
3165 # --------------------
3166 # Shell function body for AC_COMPUTE_INT.
3167 m4_define([_AC_COMPUTE_INT_BODY],
3168 [ AS_LINENO_PUSH([$[]1])
3169 if test "$cross_compiling" = yes; then
3170 _AC_COMPUTE_INT_COMPILE([$[]2], [$[]3], [$[]4],
3171 [ac_retval=0], [ac_retval=1])
3173 _AC_COMPUTE_INT_RUN([$[]2], [$[]3], [$[]4],
3174 [ac_retval=0], [ac_retval=1])
3177 AS_SET_STATUS([$ac_retval])
3178 ])# _AC_COMPUTE_INT_BODY
3180 # AC_COMPUTE_INT(VARIABLE, EXPRESSION, PROLOGUE, [IF-FAILS])
3181 # ----------------------------------------------------------
3182 # Store into the shell variable VARIABLE the value of the integer C expression
3183 # EXPRESSION. The value should fit in an initializer in a C variable of type
3184 # `signed long'. If no PROLOGUE are specified, the default includes are used.
3185 # IF-FAILS is evaluated if the value cannot be found (which includes the
3186 # case of cross-compilation, if EXPRESSION is not computable at compile-time.
3187 AC_DEFUN([AC_COMPUTE_INT],
3188 [AC_LANG_COMPILER_REQUIRE()]dnl
3189 [AC_REQUIRE_SHELL_FN([ac_fn_]_AC_LANG_ABBREV[_compute_int],
3190 [AS_FUNCTION_DESCRIBE([ac_fn_]_AC_LANG_ABBREV[_compute_int],
3191 [LINENO EXPR VAR INCLUDES],
3192 [Tries to find the compile-time value of EXPR in a program that includes
3193 INCLUDES, setting VAR accordingly. Returns whether the value could
3196 [AS_IF([ac_fn_[]_AC_LANG_ABBREV[]_compute_int "$LINENO" "$2" "$1" ]dnl
3197 ["AS_ESCAPE([$3], [""])"],
3201 # _AC_COMPUTE_INT(EXPRESSION, VARIABLE, PROLOGUE, [IF-FAILS])
3202 # -----------------------------------------------------------
3203 # FIXME: this private interface was used by several packages.
3204 # Give them time to transition to AC_COMPUTE_INT and then delete this one.
3205 AC_DEFUN([_AC_COMPUTE_INT],
3206 [AC_COMPUTE_INT([$2], [$1], [$3], [$4])
3207 AC_DIAGNOSE([obsolete],
3208 [The macro `_AC_COMPUTE_INT' is obsolete and will be deleted in a
3209 future version or Autoconf. Hence, it is suggested that you use
3210 instead the public AC_COMPUTE_INT macro. Note that the arguments are
3211 slightly different between the two.])dnl