aclocal.m4 43 KB

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  1. # generated automatically by aclocal 1.16.4 -*- Autoconf -*-
  2. # Copyright (C) 1996-2021 Free Software Foundation, Inc.
  3. # This file is free software; the Free Software Foundation
  4. # gives unlimited permission to copy and/or distribute it,
  5. # with or without modifications, as long as this notice is preserved.
  6. # This program is distributed in the hope that it will be useful,
  7. # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
  8. # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  9. # PARTICULAR PURPOSE.
  10. m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
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  18. # Copyright (C) 2002-2021 Free Software Foundation, Inc.
  19. #
  20. # This file is free software; the Free Software Foundation
  21. # gives unlimited permission to copy and/or distribute it,
  22. # with or without modifications, as long as this notice is preserved.
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  50. # AM_AUX_DIR_EXPAND -*- Autoconf -*-
  51. # Copyright (C) 2001-2021 Free Software Foundation, Inc.
  52. #
  53. # This file is free software; the Free Software Foundation
  54. # gives unlimited permission to copy and/or distribute it,
  55. # with or without modifications, as long as this notice is preserved.
  56. # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
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  69. # fails when called from a subdirectory if $ac_aux_dir is relative
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  78. # start a VPATH build or use an absolute $srcdir.
  79. #
  80. # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
  81. # iff we strip the leading $srcdir from $ac_aux_dir. That would be:
  82. # am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
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  86. # unfortunately $(top_srcdir) has no meaning in configure.
  87. # However there are other variables, like CC, which are often used in
  88. # configure, and could therefore not use this "fixed" $ac_aux_dir.
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  90. # Another solution, used here, is to always expand $ac_aux_dir to an
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  96. am_aux_dir=`cd "$ac_aux_dir" && pwd`
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  98. # AM_CONDITIONAL -*- Autoconf -*-
  99. # Copyright (C) 1997-2021 Free Software Foundation, Inc.
  100. #
  101. # This file is free software; the Free Software Foundation
  102. # gives unlimited permission to copy and/or distribute it,
  103. # with or without modifications, as long as this notice is preserved.
  104. # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  105. # -------------------------------------
  106. # Define a conditional.
  107. AC_DEFUN([AM_CONDITIONAL],
  108. [AC_PREREQ([2.52])dnl
  109. m4_if([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])],
  110. [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  111. AC_SUBST([$1_TRUE])dnl
  112. AC_SUBST([$1_FALSE])dnl
  113. _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  114. _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  115. m4_define([_AM_COND_VALUE_$1], [$2])dnl
  116. if $2; then
  117. $1_TRUE=
  118. $1_FALSE='#'
  119. else
  120. $1_TRUE='#'
  121. $1_FALSE=
  122. fi
  123. AC_CONFIG_COMMANDS_PRE(
  124. [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  125. AC_MSG_ERROR([[conditional "$1" was never defined.
  126. Usually this means the macro was only invoked conditionally.]])
  127. fi])])
  128. # Copyright (C) 1999-2021 Free Software Foundation, Inc.
  129. #
  130. # This file is free software; the Free Software Foundation
  131. # gives unlimited permission to copy and/or distribute it,
  132. # with or without modifications, as long as this notice is preserved.
  133. # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  134. # written in clear, in which case automake, when reading aclocal.m4,
  135. # will think it sees a *use*, and therefore will trigger all it's
  136. # C support machinery. Also note that it means that autoscan, seeing
  137. # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  138. # _AM_DEPENDENCIES(NAME)
  139. # ----------------------
  140. # See how the compiler implements dependency checking.
  141. # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
  142. # We try a few techniques and use that to set a single cache variable.
  143. #
  144. # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  145. # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  146. # dependency, and given that the user is not expected to run this macro,
  147. # just rely on AC_PROG_CC.
  148. AC_DEFUN([_AM_DEPENDENCIES],
  149. [AC_REQUIRE([AM_SET_DEPDIR])dnl
  150. AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  151. AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  152. AC_REQUIRE([AM_DEP_TRACK])dnl
  153. m4_if([$1], [CC], [depcc="$CC" am_compiler_list=],
  154. [$1], [CXX], [depcc="$CXX" am_compiler_list=],
  155. [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
  156. [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
  157. [$1], [UPC], [depcc="$UPC" am_compiler_list=],
  158. [$1], [GCJ], [depcc="$GCJ" am_compiler_list='gcc3 gcc'],
  159. [depcc="$$1" am_compiler_list=])
  160. AC_CACHE_CHECK([dependency style of $depcc],
  161. [am_cv_$1_dependencies_compiler_type],
  162. [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  163. # We make a subdir and do the tests there. Otherwise we can end up
  164. # making bogus files that we don't know about and never remove. For
  165. # instance it was reported that on HP-UX the gcc test will end up
  166. # making a dummy file named 'D' -- because '-MD' means "put the output
  167. # in D".
  168. rm -rf conftest.dir
  169. mkdir conftest.dir
  170. # Copy depcomp to subdir because otherwise we won't find it if we're
  171. # using a relative directory.
  172. cp "$am_depcomp" conftest.dir
  173. cd conftest.dir
  174. # We will build objects and dependencies in a subdirectory because
  175. # it helps to detect inapplicable dependency modes. For instance
  176. # both Tru64's cc and ICC support -MD to output dependencies as a
  177. # side effect of compilation, but ICC will put the dependencies in
  178. # the current directory while Tru64 will put them in the object
  179. # directory.
  180. mkdir sub
  181. am_cv_$1_dependencies_compiler_type=none
  182. if test "$am_compiler_list" = ""; then
  183. am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  184. fi
  185. am__universal=false
  186. m4_case([$1], [CC],
  187. [case " $depcc " in #(
  188. *\ -arch\ *\ -arch\ *) am__universal=true ;;
  189. esac],
  190. [CXX],
  191. [case " $depcc " in #(
  192. *\ -arch\ *\ -arch\ *) am__universal=true ;;
  193. esac])
  194. for depmode in $am_compiler_list; do
  195. # Setup a source with many dependencies, because some compilers
  196. # like to wrap large dependency lists on column 80 (with \), and
  197. # we should not choose a depcomp mode which is confused by this.
  198. #
  199. # We need to recreate these files for each test, as the compiler may
  200. # overwrite some of them when testing with obscure command lines.
  201. # This happens at least with the AIX C compiler.
  202. : > sub/conftest.c
  203. for i in 1 2 3 4 5 6; do
  204. echo '#include "conftst'$i'.h"' >> sub/conftest.c
  205. # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  206. # Solaris 10 /bin/sh.
  207. echo '/* dummy */' > sub/conftst$i.h
  208. done
  209. echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  210. # We check with '-c' and '-o' for the sake of the "dashmstdout"
  211. # mode. It turns out that the SunPro C++ compiler does not properly
  212. # handle '-M -o', and we need to detect this. Also, some Intel
  213. # versions had trouble with output in subdirs.
  214. am__obj=sub/conftest.${OBJEXT-o}
  215. am__minus_obj="-o $am__obj"
  216. case $depmode in
  217. gcc)
  218. # This depmode causes a compiler race in universal mode.
  219. test "$am__universal" = false || continue
  220. ;;
  221. nosideeffect)
  222. # After this tag, mechanisms are not by side-effect, so they'll
  223. # only be used when explicitly requested.
  224. if test "x$enable_dependency_tracking" = xyes; then
  225. continue
  226. else
  227. break
  228. fi
  229. ;;
  230. msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  231. # This compiler won't grok '-c -o', but also, the minuso test has
  232. # not run yet. These depmodes are late enough in the game, and
  233. # so weak that their functioning should not be impacted.
  234. am__obj=conftest.${OBJEXT-o}
  235. am__minus_obj=
  236. ;;
  237. none) break ;;
  238. esac
  239. if depmode=$depmode \
  240. source=sub/conftest.c object=$am__obj \
  241. depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  242. $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  243. >/dev/null 2>conftest.err &&
  244. grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  245. grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  246. grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  247. ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  248. # icc doesn't choke on unknown options, it will just issue warnings
  249. # or remarks (even with -Werror). So we grep stderr for any message
  250. # that says an option was ignored or not supported.
  251. # When given -MP, icc 7.0 and 7.1 complain thusly:
  252. # icc: Command line warning: ignoring option '-M'; no argument required
  253. # The diagnosis changed in icc 8.0:
  254. # icc: Command line remark: option '-MP' not supported
  255. if (grep 'ignoring option' conftest.err ||
  256. grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  257. am_cv_$1_dependencies_compiler_type=$depmode
  258. break
  259. fi
  260. fi
  261. done
  262. cd ..
  263. rm -rf conftest.dir
  264. else
  265. am_cv_$1_dependencies_compiler_type=none
  266. fi
  267. ])
  268. AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  269. AM_CONDITIONAL([am__fastdep$1], [
  270. test "x$enable_dependency_tracking" != xno \
  271. && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  272. ])
  273. # AM_SET_DEPDIR
  274. # -------------
  275. # Choose a directory name for dependency files.
  276. # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  277. AC_DEFUN([AM_SET_DEPDIR],
  278. [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  279. AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  280. ])
  281. # AM_DEP_TRACK
  282. # ------------
  283. AC_DEFUN([AM_DEP_TRACK],
  284. [AC_ARG_ENABLE([dependency-tracking], [dnl
  285. AS_HELP_STRING(
  286. [--enable-dependency-tracking],
  287. [do not reject slow dependency extractors])
  288. AS_HELP_STRING(
  289. [--disable-dependency-tracking],
  290. [speeds up one-time build])])
  291. if test "x$enable_dependency_tracking" != xno; then
  292. am_depcomp="$ac_aux_dir/depcomp"
  293. AMDEPBACKSLASH='\'
  294. am__nodep='_no'
  295. fi
  296. AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  297. AC_SUBST([AMDEPBACKSLASH])dnl
  298. _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  299. AC_SUBST([am__nodep])dnl
  300. _AM_SUBST_NOTMAKE([am__nodep])dnl
  301. ])
  302. # Generate code to set up dependency tracking. -*- Autoconf -*-
  303. # Copyright (C) 1999-2021 Free Software Foundation, Inc.
  304. #
  305. # This file is free software; the Free Software Foundation
  306. # gives unlimited permission to copy and/or distribute it,
  307. # with or without modifications, as long as this notice is preserved.
  308. # _AM_OUTPUT_DEPENDENCY_COMMANDS
  309. # ------------------------------
  310. AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  311. [{
  312. # Older Autoconf quotes --file arguments for eval, but not when files
  313. # are listed without --file. Let's play safe and only enable the eval
  314. # if we detect the quoting.
  315. # TODO: see whether this extra hack can be removed once we start
  316. # requiring Autoconf 2.70 or later.
  317. AS_CASE([$CONFIG_FILES],
  318. [*\'*], [eval set x "$CONFIG_FILES"],
  319. [*], [set x $CONFIG_FILES])
  320. shift
  321. # Used to flag and report bootstrapping failures.
  322. am_rc=0
  323. for am_mf
  324. do
  325. # Strip MF so we end up with the name of the file.
  326. am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  327. # Check whether this is an Automake generated Makefile which includes
  328. # dependency-tracking related rules and includes.
  329. # Grep'ing the whole file directly is not great: AIX grep has a line
  330. # limit of 2048, but all sed's we know have understand at least 4000.
  331. sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  332. || continue
  333. am_dirpart=`AS_DIRNAME(["$am_mf"])`
  334. am_filepart=`AS_BASENAME(["$am_mf"])`
  335. AM_RUN_LOG([cd "$am_dirpart" \
  336. && sed -e '/# am--include-marker/d' "$am_filepart" \
  337. | $MAKE -f - am--depfiles]) || am_rc=$?
  338. done
  339. if test $am_rc -ne 0; then
  340. AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  341. for automatic dependency tracking. If GNU make was not used, consider
  342. re-running the configure script with MAKE="gmake" (or whatever is
  343. necessary). You can also try re-running configure with the
  344. '--disable-dependency-tracking' option to at least be able to build
  345. the package (albeit without support for automatic dependency tracking).])
  346. fi
  347. AS_UNSET([am_dirpart])
  348. AS_UNSET([am_filepart])
  349. AS_UNSET([am_mf])
  350. AS_UNSET([am_rc])
  351. rm -f conftest-deps.mk
  352. }
  353. ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  354. # AM_OUTPUT_DEPENDENCY_COMMANDS
  355. # -----------------------------
  356. # This macro should only be invoked once -- use via AC_REQUIRE.
  357. #
  358. # This code is only required when automatic dependency tracking is enabled.
  359. # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  360. # order to bootstrap the dependency handling code.
  361. AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  362. [AC_CONFIG_COMMANDS([depfiles],
  363. [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  364. [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  365. # Do all the work for Automake. -*- Autoconf -*-
  366. # Copyright (C) 1996-2021 Free Software Foundation, Inc.
  367. #
  368. # This file is free software; the Free Software Foundation
  369. # gives unlimited permission to copy and/or distribute it,
  370. # with or without modifications, as long as this notice is preserved.
  371. # This macro actually does too much. Some checks are only needed if
  372. # your package does certain things. But this isn't really a big deal.
  373. dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  374. m4_define([AC_PROG_CC],
  375. m4_defn([AC_PROG_CC])
  376. [_AM_PROG_CC_C_O
  377. ])
  378. # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  379. # AM_INIT_AUTOMAKE([OPTIONS])
  380. # -----------------------------------------------
  381. # The call with PACKAGE and VERSION arguments is the old style
  382. # call (pre autoconf-2.50), which is being phased out. PACKAGE
  383. # and VERSION should now be passed to AC_INIT and removed from
  384. # the call to AM_INIT_AUTOMAKE.
  385. # We support both call styles for the transition. After
  386. # the next Automake release, Autoconf can make the AC_INIT
  387. # arguments mandatory, and then we can depend on a new Autoconf
  388. # release and drop the old call support.
  389. AC_DEFUN([AM_INIT_AUTOMAKE],
  390. [AC_PREREQ([2.65])dnl
  391. dnl Autoconf wants to disallow AM_ names. We explicitly allow
  392. dnl the ones we care about.
  393. m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  394. AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  395. AC_REQUIRE([AC_PROG_INSTALL])dnl
  396. if test "`cd $srcdir && pwd`" != "`pwd`"; then
  397. # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  398. # is not polluted with repeated "-I."
  399. AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  400. # test to see if srcdir already configured
  401. if test -f $srcdir/config.status; then
  402. AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  403. fi
  404. fi
  405. # test whether we have cygpath
  406. if test -z "$CYGPATH_W"; then
  407. if (cygpath --version) >/dev/null 2>/dev/null; then
  408. CYGPATH_W='cygpath -w'
  409. else
  410. CYGPATH_W=echo
  411. fi
  412. fi
  413. AC_SUBST([CYGPATH_W])
  414. # Define the identity of the package.
  415. dnl Distinguish between old-style and new-style calls.
  416. m4_ifval([$2],
  417. [AC_DIAGNOSE([obsolete],
  418. [$0: two- and three-arguments forms are deprecated.])
  419. m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  420. AC_SUBST([PACKAGE], [$1])dnl
  421. AC_SUBST([VERSION], [$2])],
  422. [_AM_SET_OPTIONS([$1])dnl
  423. dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  424. m4_if(
  425. m4_ifset([AC_PACKAGE_NAME], [ok]):m4_ifset([AC_PACKAGE_VERSION], [ok]),
  426. [ok:ok],,
  427. [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  428. AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  429. AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  430. _AM_IF_OPTION([no-define],,
  431. [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  432. AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  433. # Some tools Automake needs.
  434. AC_REQUIRE([AM_SANITY_CHECK])dnl
  435. AC_REQUIRE([AC_ARG_PROGRAM])dnl
  436. AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  437. AM_MISSING_PROG([AUTOCONF], [autoconf])
  438. AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  439. AM_MISSING_PROG([AUTOHEADER], [autoheader])
  440. AM_MISSING_PROG([MAKEINFO], [makeinfo])
  441. AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  442. AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  443. AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  444. # For better backward compatibility. To be removed once Automake 1.9.x
  445. # dies out for good. For more background, see:
  446. # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  447. # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  448. AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  449. # We need awk for the "check" target (and possibly the TAP driver). The
  450. # system "awk" is bad on some platforms.
  451. AC_REQUIRE([AC_PROG_AWK])dnl
  452. AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  453. AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  454. _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  455. [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  456. [_AM_PROG_TAR([v7])])])
  457. _AM_IF_OPTION([no-dependencies],,
  458. [AC_PROVIDE_IFELSE([AC_PROG_CC],
  459. [_AM_DEPENDENCIES([CC])],
  460. [m4_define([AC_PROG_CC],
  461. m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  462. AC_PROVIDE_IFELSE([AC_PROG_CXX],
  463. [_AM_DEPENDENCIES([CXX])],
  464. [m4_define([AC_PROG_CXX],
  465. m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  466. AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  467. [_AM_DEPENDENCIES([OBJC])],
  468. [m4_define([AC_PROG_OBJC],
  469. m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  470. AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  471. [_AM_DEPENDENCIES([OBJCXX])],
  472. [m4_define([AC_PROG_OBJCXX],
  473. m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  474. ])
  475. # Variables for tags utilities; see am/tags.am
  476. if test -z "$CTAGS"; then
  477. CTAGS=ctags
  478. fi
  479. AC_SUBST([CTAGS])
  480. if test -z "$ETAGS"; then
  481. ETAGS=etags
  482. fi
  483. AC_SUBST([ETAGS])
  484. if test -z "$CSCOPE"; then
  485. CSCOPE=cscope
  486. fi
  487. AC_SUBST([CSCOPE])
  488. AC_REQUIRE([AM_SILENT_RULES])dnl
  489. dnl The testsuite driver may need to know about EXEEXT, so add the
  490. dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
  491. dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  492. AC_CONFIG_COMMANDS_PRE(dnl
  493. [m4_provide_if([_AM_COMPILER_EXEEXT],
  494. [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  495. # POSIX will say in a future version that running "rm -f" with no argument
  496. # is OK; and we want to be able to make that assumption in our Makefile
  497. # recipes. So use an aggressive probe to check that the usage we want is
  498. # actually supported "in the wild" to an acceptable degree.
  499. # See automake bug#10828.
  500. # To make any issue more visible, cause the running configure to be aborted
  501. # by default if the 'rm' program in use doesn't match our expectations; the
  502. # user can still override this though.
  503. if rm -f && rm -fr && rm -rf; then : OK; else
  504. cat >&2 <<'END'
  505. Oops!
  506. Your 'rm' program seems unable to run without file operands specified
  507. on the command line, even when the '-f' option is present. This is contrary
  508. to the behaviour of most rm programs out there, and not conforming with
  509. the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  510. Please tell [email protected] about your system, including the value
  511. of your $PATH and any error possibly output before this message. This
  512. can help us improve future automake versions.
  513. END
  514. if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  515. echo 'Configuration will proceed anyway, since you have set the' >&2
  516. echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  517. echo >&2
  518. else
  519. cat >&2 <<'END'
  520. Aborting the configuration process, to ensure you take notice of the issue.
  521. You can download and install GNU coreutils to get an 'rm' implementation
  522. that behaves properly: <https://www.gnu.org/software/coreutils/>.
  523. If you want to complete the configuration process using your problematic
  524. 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  525. to "yes", and re-run configure.
  526. END
  527. AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  528. fi
  529. fi
  530. dnl The trailing newline in this macro's definition is deliberate, for
  531. dnl backward compatibility and to allow trailing 'dnl'-style comments
  532. dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  533. ])
  534. dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
  535. dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  536. dnl mangled by Autoconf and run in a shell conditional statement.
  537. m4_define([_AC_COMPILER_EXEEXT],
  538. m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  539. # When config.status generates a header, we must update the stamp-h file.
  540. # This file resides in the same directory as the config header
  541. # that is generated. The stamp files are numbered to have different names.
  542. # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  543. # loop where config.status creates the headers, so we can generate
  544. # our stamp files there.
  545. AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  546. [# Compute $1's index in $config_headers.
  547. _am_arg=$1
  548. _am_stamp_count=1
  549. for _am_header in $config_headers :; do
  550. case $_am_header in
  551. $_am_arg | $_am_arg:* )
  552. break ;;
  553. * )
  554. _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  555. esac
  556. done
  557. echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  558. # Copyright (C) 2001-2021 Free Software Foundation, Inc.
  559. #
  560. # This file is free software; the Free Software Foundation
  561. # gives unlimited permission to copy and/or distribute it,
  562. # with or without modifications, as long as this notice is preserved.
  563. # AM_PROG_INSTALL_SH
  564. # ------------------
  565. # Define $install_sh.
  566. AC_DEFUN([AM_PROG_INSTALL_SH],
  567. [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  568. if test x"${install_sh+set}" != xset; then
  569. case $am_aux_dir in
  570. *\ * | *\ *)
  571. install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  572. *)
  573. install_sh="\${SHELL} $am_aux_dir/install-sh"
  574. esac
  575. fi
  576. AC_SUBST([install_sh])])
  577. # Copyright (C) 2003-2021 Free Software Foundation, Inc.
  578. #
  579. # This file is free software; the Free Software Foundation
  580. # gives unlimited permission to copy and/or distribute it,
  581. # with or without modifications, as long as this notice is preserved.
  582. # Check whether the underlying file-system supports filenames
  583. # with a leading dot. For instance MS-DOS doesn't.
  584. AC_DEFUN([AM_SET_LEADING_DOT],
  585. [rm -rf .tst 2>/dev/null
  586. mkdir .tst 2>/dev/null
  587. if test -d .tst; then
  588. am__leading_dot=.
  589. else
  590. am__leading_dot=_
  591. fi
  592. rmdir .tst 2>/dev/null
  593. AC_SUBST([am__leading_dot])])
  594. # Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
  595. # From Jim Meyering
  596. # Copyright (C) 1996-2021 Free Software Foundation, Inc.
  597. #
  598. # This file is free software; the Free Software Foundation
  599. # gives unlimited permission to copy and/or distribute it,
  600. # with or without modifications, as long as this notice is preserved.
  601. # AM_MAINTAINER_MODE([DEFAULT-MODE])
  602. # ----------------------------------
  603. # Control maintainer-specific portions of Makefiles.
  604. # Default is to disable them, unless 'enable' is passed literally.
  605. # For symmetry, 'disable' may be passed as well. Anyway, the user
  606. # can override the default with the --enable/--disable switch.
  607. AC_DEFUN([AM_MAINTAINER_MODE],
  608. [m4_case(m4_default([$1], [disable]),
  609. [enable], [m4_define([am_maintainer_other], [disable])],
  610. [disable], [m4_define([am_maintainer_other], [enable])],
  611. [m4_define([am_maintainer_other], [enable])
  612. m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
  613. AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  614. dnl maintainer-mode's default is 'disable' unless 'enable' is passed
  615. AC_ARG_ENABLE([maintainer-mode],
  616. [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
  617. am_maintainer_other[ make rules and dependencies not useful
  618. (and sometimes confusing) to the casual installer])],
  619. [USE_MAINTAINER_MODE=$enableval],
  620. [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
  621. AC_MSG_RESULT([$USE_MAINTAINER_MODE])
  622. AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
  623. MAINT=$MAINTAINER_MODE_TRUE
  624. AC_SUBST([MAINT])dnl
  625. ]
  626. )
  627. # Check to see how 'make' treats includes. -*- Autoconf -*-
  628. # Copyright (C) 2001-2021 Free Software Foundation, Inc.
  629. #
  630. # This file is free software; the Free Software Foundation
  631. # gives unlimited permission to copy and/or distribute it,
  632. # with or without modifications, as long as this notice is preserved.
  633. # AM_MAKE_INCLUDE()
  634. # -----------------
  635. # Check whether make has an 'include' directive that can support all
  636. # the idioms we need for our automatic dependency tracking code.
  637. AC_DEFUN([AM_MAKE_INCLUDE],
  638. [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
  639. cat > confinc.mk << 'END'
  640. am__doit:
  641. @echo this is the am__doit target >confinc.out
  642. .PHONY: am__doit
  643. END
  644. am__include="#"
  645. am__quote=
  646. # BSD make does it like this.
  647. echo '.include "confinc.mk" # ignored' > confmf.BSD
  648. # Other make implementations (GNU, Solaris 10, AIX) do it like this.
  649. echo 'include confinc.mk # ignored' > confmf.GNU
  650. _am_result=no
  651. for s in GNU BSD; do
  652. AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
  653. AS_CASE([$?:`cat confinc.out 2>/dev/null`],
  654. ['0:this is the am__doit target'],
  655. [AS_CASE([$s],
  656. [BSD], [am__include='.include' am__quote='"'],
  657. [am__include='include' am__quote=''])])
  658. if test "$am__include" != "#"; then
  659. _am_result="yes ($s style)"
  660. break
  661. fi
  662. done
  663. rm -f confinc.* confmf.*
  664. AC_MSG_RESULT([${_am_result}])
  665. AC_SUBST([am__include])])
  666. AC_SUBST([am__quote])])
  667. # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
  668. # Copyright (C) 1997-2021 Free Software Foundation, Inc.
  669. #
  670. # This file is free software; the Free Software Foundation
  671. # gives unlimited permission to copy and/or distribute it,
  672. # with or without modifications, as long as this notice is preserved.
  673. # AM_MISSING_PROG(NAME, PROGRAM)
  674. # ------------------------------
  675. AC_DEFUN([AM_MISSING_PROG],
  676. [AC_REQUIRE([AM_MISSING_HAS_RUN])
  677. $1=${$1-"${am_missing_run}$2"}
  678. AC_SUBST($1)])
  679. # AM_MISSING_HAS_RUN
  680. # ------------------
  681. # Define MISSING if not defined so far and test if it is modern enough.
  682. # If it is, set am_missing_run to use it, otherwise, to nothing.
  683. AC_DEFUN([AM_MISSING_HAS_RUN],
  684. [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  685. AC_REQUIRE_AUX_FILE([missing])dnl
  686. if test x"${MISSING+set}" != xset; then
  687. MISSING="\${SHELL} '$am_aux_dir/missing'"
  688. fi
  689. # Use eval to expand $SHELL
  690. if eval "$MISSING --is-lightweight"; then
  691. am_missing_run="$MISSING "
  692. else
  693. am_missing_run=
  694. AC_MSG_WARN(['missing' script is too old or missing])
  695. fi
  696. ])
  697. # Helper functions for option handling. -*- Autoconf -*-
  698. # Copyright (C) 2001-2021 Free Software Foundation, Inc.
  699. #
  700. # This file is free software; the Free Software Foundation
  701. # gives unlimited permission to copy and/or distribute it,
  702. # with or without modifications, as long as this notice is preserved.
  703. # _AM_MANGLE_OPTION(NAME)
  704. # -----------------------
  705. AC_DEFUN([_AM_MANGLE_OPTION],
  706. [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
  707. # _AM_SET_OPTION(NAME)
  708. # --------------------
  709. # Set option NAME. Presently that only means defining a flag for this option.
  710. AC_DEFUN([_AM_SET_OPTION],
  711. [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
  712. # _AM_SET_OPTIONS(OPTIONS)
  713. # ------------------------
  714. # OPTIONS is a space-separated list of Automake options.
  715. AC_DEFUN([_AM_SET_OPTIONS],
  716. [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
  717. # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
  718. # -------------------------------------------
  719. # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
  720. AC_DEFUN([_AM_IF_OPTION],
  721. [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
  722. # Copyright (C) 1999-2021 Free Software Foundation, Inc.
  723. #
  724. # This file is free software; the Free Software Foundation
  725. # gives unlimited permission to copy and/or distribute it,
  726. # with or without modifications, as long as this notice is preserved.
  727. # _AM_PROG_CC_C_O
  728. # ---------------
  729. # Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
  730. # to automatically call this.
  731. AC_DEFUN([_AM_PROG_CC_C_O],
  732. [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  733. AC_REQUIRE_AUX_FILE([compile])dnl
  734. AC_LANG_PUSH([C])dnl
  735. AC_CACHE_CHECK(
  736. [whether $CC understands -c and -o together],
  737. [am_cv_prog_cc_c_o],
  738. [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
  739. # Make sure it works both with $CC and with simple cc.
  740. # Following AC_PROG_CC_C_O, we do the test twice because some
  741. # compilers refuse to overwrite an existing .o file with -o,
  742. # though they will create one.
  743. am_cv_prog_cc_c_o=yes
  744. for am_i in 1 2; do
  745. if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
  746. && test -f conftest2.$ac_objext; then
  747. : OK
  748. else
  749. am_cv_prog_cc_c_o=no
  750. break
  751. fi
  752. done
  753. rm -f core conftest*
  754. unset am_i])
  755. if test "$am_cv_prog_cc_c_o" != yes; then
  756. # Losing compiler, so override with the script.
  757. # FIXME: It is wrong to rewrite CC.
  758. # But if we don't then we get into trouble of one sort or another.
  759. # A longer-term fix would be to have automake use am__CC in this case,
  760. # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
  761. CC="$am_aux_dir/compile $CC"
  762. fi
  763. AC_LANG_POP([C])])
  764. # For backward compatibility.
  765. AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
  766. # Copyright (C) 2001-2021 Free Software Foundation, Inc.
  767. #
  768. # This file is free software; the Free Software Foundation
  769. # gives unlimited permission to copy and/or distribute it,
  770. # with or without modifications, as long as this notice is preserved.
  771. # AM_RUN_LOG(COMMAND)
  772. # -------------------
  773. # Run COMMAND, save the exit status in ac_status, and log it.
  774. # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
  775. AC_DEFUN([AM_RUN_LOG],
  776. [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
  777. ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
  778. ac_status=$?
  779. echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
  780. (exit $ac_status); }])
  781. # Check to make sure that the build environment is sane. -*- Autoconf -*-
  782. # Copyright (C) 1996-2021 Free Software Foundation, Inc.
  783. #
  784. # This file is free software; the Free Software Foundation
  785. # gives unlimited permission to copy and/or distribute it,
  786. # with or without modifications, as long as this notice is preserved.
  787. # AM_SANITY_CHECK
  788. # ---------------
  789. AC_DEFUN([AM_SANITY_CHECK],
  790. [AC_MSG_CHECKING([whether build environment is sane])
  791. # Reject unsafe characters in $srcdir or the absolute working directory
  792. # name. Accept space and tab only in the latter.
  793. am_lf='
  794. '
  795. case `pwd` in
  796. *[[\\\"\#\$\&\'\`$am_lf]]*)
  797. AC_MSG_ERROR([unsafe absolute working directory name]);;
  798. esac
  799. case $srcdir in
  800. *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
  801. AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
  802. esac
  803. # Do 'set' in a subshell so we don't clobber the current shell's
  804. # arguments. Must try -L first in case configure is actually a
  805. # symlink; some systems play weird games with the mod time of symlinks
  806. # (eg FreeBSD returns the mod time of the symlink's containing
  807. # directory).
  808. if (
  809. am_has_slept=no
  810. for am_try in 1 2; do
  811. echo "timestamp, slept: $am_has_slept" > conftest.file
  812. set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
  813. if test "$[*]" = "X"; then
  814. # -L didn't work.
  815. set X `ls -t "$srcdir/configure" conftest.file`
  816. fi
  817. if test "$[*]" != "X $srcdir/configure conftest.file" \
  818. && test "$[*]" != "X conftest.file $srcdir/configure"; then
  819. # If neither matched, then we have a broken ls. This can happen
  820. # if, for instance, CONFIG_SHELL is bash and it inherits a
  821. # broken ls alias from the environment. This has actually
  822. # happened. Such a system could not be considered "sane".
  823. AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
  824. alias in your environment])
  825. fi
  826. if test "$[2]" = conftest.file || test $am_try -eq 2; then
  827. break
  828. fi
  829. # Just in case.
  830. sleep 1
  831. am_has_slept=yes
  832. done
  833. test "$[2]" = conftest.file
  834. )
  835. then
  836. # Ok.
  837. :
  838. else
  839. AC_MSG_ERROR([newly created file is older than distributed files!
  840. Check your system clock])
  841. fi
  842. AC_MSG_RESULT([yes])
  843. # If we didn't sleep, we still need to ensure time stamps of config.status and
  844. # generated files are strictly newer.
  845. am_sleep_pid=
  846. if grep 'slept: no' conftest.file >/dev/null 2>&1; then
  847. ( sleep 1 ) &
  848. am_sleep_pid=$!
  849. fi
  850. AC_CONFIG_COMMANDS_PRE(
  851. [AC_MSG_CHECKING([that generated files are newer than configure])
  852. if test -n "$am_sleep_pid"; then
  853. # Hide warnings about reused PIDs.
  854. wait $am_sleep_pid 2>/dev/null
  855. fi
  856. AC_MSG_RESULT([done])])
  857. rm -f conftest.file
  858. ])
  859. # Copyright (C) 2009-2021 Free Software Foundation, Inc.
  860. #
  861. # This file is free software; the Free Software Foundation
  862. # gives unlimited permission to copy and/or distribute it,
  863. # with or without modifications, as long as this notice is preserved.
  864. # AM_SILENT_RULES([DEFAULT])
  865. # --------------------------
  866. # Enable less verbose build rules; with the default set to DEFAULT
  867. # ("yes" being less verbose, "no" or empty being verbose).
  868. AC_DEFUN([AM_SILENT_RULES],
  869. [AC_ARG_ENABLE([silent-rules], [dnl
  870. AS_HELP_STRING(
  871. [--enable-silent-rules],
  872. [less verbose build output (undo: "make V=1")])
  873. AS_HELP_STRING(
  874. [--disable-silent-rules],
  875. [verbose build output (undo: "make V=0")])dnl
  876. ])
  877. case $enable_silent_rules in @%:@ (((
  878. yes) AM_DEFAULT_VERBOSITY=0;;
  879. no) AM_DEFAULT_VERBOSITY=1;;
  880. *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
  881. esac
  882. dnl
  883. dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
  884. dnl do not support nested variable expansions.
  885. dnl See automake bug#9928 and bug#10237.
  886. am_make=${MAKE-make}
  887. AC_CACHE_CHECK([whether $am_make supports nested variables],
  888. [am_cv_make_support_nested_variables],
  889. [if AS_ECHO([['TRUE=$(BAR$(V))
  890. BAR0=false
  891. BAR1=true
  892. V=1
  893. am__doit:
  894. @$(TRUE)
  895. .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
  896. am_cv_make_support_nested_variables=yes
  897. else
  898. am_cv_make_support_nested_variables=no
  899. fi])
  900. if test $am_cv_make_support_nested_variables = yes; then
  901. dnl Using '$V' instead of '$(V)' breaks IRIX make.
  902. AM_V='$(V)'
  903. AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
  904. else
  905. AM_V=$AM_DEFAULT_VERBOSITY
  906. AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
  907. fi
  908. AC_SUBST([AM_V])dnl
  909. AM_SUBST_NOTMAKE([AM_V])dnl
  910. AC_SUBST([AM_DEFAULT_V])dnl
  911. AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
  912. AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
  913. AM_BACKSLASH='\'
  914. AC_SUBST([AM_BACKSLASH])dnl
  915. _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
  916. ])
  917. # Copyright (C) 2001-2021 Free Software Foundation, Inc.
  918. #
  919. # This file is free software; the Free Software Foundation
  920. # gives unlimited permission to copy and/or distribute it,
  921. # with or without modifications, as long as this notice is preserved.
  922. # AM_PROG_INSTALL_STRIP
  923. # ---------------------
  924. # One issue with vendor 'install' (even GNU) is that you can't
  925. # specify the program used to strip binaries. This is especially
  926. # annoying in cross-compiling environments, where the build's strip
  927. # is unlikely to handle the host's binaries.
  928. # Fortunately install-sh will honor a STRIPPROG variable, so we
  929. # always use install-sh in "make install-strip", and initialize
  930. # STRIPPROG with the value of the STRIP variable (set by the user).
  931. AC_DEFUN([AM_PROG_INSTALL_STRIP],
  932. [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  933. # Installed binaries are usually stripped using 'strip' when the user
  934. # run "make install-strip". However 'strip' might not be the right
  935. # tool to use in cross-compilation environments, therefore Automake
  936. # will honor the 'STRIP' environment variable to overrule this program.
  937. dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
  938. if test "$cross_compiling" != no; then
  939. AC_CHECK_TOOL([STRIP], [strip], :)
  940. fi
  941. INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
  942. AC_SUBST([INSTALL_STRIP_PROGRAM])])
  943. # Copyright (C) 2006-2021 Free Software Foundation, Inc.
  944. #
  945. # This file is free software; the Free Software Foundation
  946. # gives unlimited permission to copy and/or distribute it,
  947. # with or without modifications, as long as this notice is preserved.
  948. # _AM_SUBST_NOTMAKE(VARIABLE)
  949. # ---------------------------
  950. # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
  951. # This macro is traced by Automake.
  952. AC_DEFUN([_AM_SUBST_NOTMAKE])
  953. # AM_SUBST_NOTMAKE(VARIABLE)
  954. # --------------------------
  955. # Public sister of _AM_SUBST_NOTMAKE.
  956. AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
  957. # Check how to create a tarball. -*- Autoconf -*-
  958. # Copyright (C) 2004-2021 Free Software Foundation, Inc.
  959. #
  960. # This file is free software; the Free Software Foundation
  961. # gives unlimited permission to copy and/or distribute it,
  962. # with or without modifications, as long as this notice is preserved.
  963. # _AM_PROG_TAR(FORMAT)
  964. # --------------------
  965. # Check how to create a tarball in format FORMAT.
  966. # FORMAT should be one of 'v7', 'ustar', or 'pax'.
  967. #
  968. # Substitute a variable $(am__tar) that is a command
  969. # writing to stdout a FORMAT-tarball containing the directory
  970. # $tardir.
  971. # tardir=directory && $(am__tar) > result.tar
  972. #
  973. # Substitute a variable $(am__untar) that extract such
  974. # a tarball read from stdin.
  975. # $(am__untar) < result.tar
  976. #
  977. AC_DEFUN([_AM_PROG_TAR],
  978. [# Always define AMTAR for backward compatibility. Yes, it's still used
  979. # in the wild :-( We should find a proper way to deprecate it ...
  980. AC_SUBST([AMTAR], ['$${TAR-tar}'])
  981. # We'll loop over all known methods to create a tar archive until one works.
  982. _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
  983. m4_if([$1], [v7],
  984. [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
  985. [m4_case([$1],
  986. [ustar],
  987. [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
  988. # There is notably a 21 bits limit for the UID and the GID. In fact,
  989. # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
  990. # and bug#13588).
  991. am_max_uid=2097151 # 2^21 - 1
  992. am_max_gid=$am_max_uid
  993. # The $UID and $GID variables are not portable, so we need to resort
  994. # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
  995. # below are definitely unexpected, so allow the users to see them
  996. # (that is, avoid stderr redirection).
  997. am_uid=`id -u || echo unknown`
  998. am_gid=`id -g || echo unknown`
  999. AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
  1000. if test $am_uid -le $am_max_uid; then
  1001. AC_MSG_RESULT([yes])
  1002. else
  1003. AC_MSG_RESULT([no])
  1004. _am_tools=none
  1005. fi
  1006. AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
  1007. if test $am_gid -le $am_max_gid; then
  1008. AC_MSG_RESULT([yes])
  1009. else
  1010. AC_MSG_RESULT([no])
  1011. _am_tools=none
  1012. fi],
  1013. [pax],
  1014. [],
  1015. [m4_fatal([Unknown tar format])])
  1016. AC_MSG_CHECKING([how to create a $1 tar archive])
  1017. # Go ahead even if we have the value already cached. We do so because we
  1018. # need to set the values for the 'am__tar' and 'am__untar' variables.
  1019. _am_tools=${am_cv_prog_tar_$1-$_am_tools}
  1020. for _am_tool in $_am_tools; do
  1021. case $_am_tool in
  1022. gnutar)
  1023. for _am_tar in tar gnutar gtar; do
  1024. AM_RUN_LOG([$_am_tar --version]) && break
  1025. done
  1026. am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
  1027. am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
  1028. am__untar="$_am_tar -xf -"
  1029. ;;
  1030. plaintar)
  1031. # Must skip GNU tar: if it does not support --format= it doesn't create
  1032. # ustar tarball either.
  1033. (tar --version) >/dev/null 2>&1 && continue
  1034. am__tar='tar chf - "$$tardir"'
  1035. am__tar_='tar chf - "$tardir"'
  1036. am__untar='tar xf -'
  1037. ;;
  1038. pax)
  1039. am__tar='pax -L -x $1 -w "$$tardir"'
  1040. am__tar_='pax -L -x $1 -w "$tardir"'
  1041. am__untar='pax -r'
  1042. ;;
  1043. cpio)
  1044. am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
  1045. am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
  1046. am__untar='cpio -i -H $1 -d'
  1047. ;;
  1048. none)
  1049. am__tar=false
  1050. am__tar_=false
  1051. am__untar=false
  1052. ;;
  1053. esac
  1054. # If the value was cached, stop now. We just wanted to have am__tar
  1055. # and am__untar set.
  1056. test -n "${am_cv_prog_tar_$1}" && break
  1057. # tar/untar a dummy directory, and stop if the command works.
  1058. rm -rf conftest.dir
  1059. mkdir conftest.dir
  1060. echo GrepMe > conftest.dir/file
  1061. AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
  1062. rm -rf conftest.dir
  1063. if test -s conftest.tar; then
  1064. AM_RUN_LOG([$am__untar <conftest.tar])
  1065. AM_RUN_LOG([cat conftest.dir/file])
  1066. grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
  1067. fi
  1068. done
  1069. rm -rf conftest.dir
  1070. AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
  1071. AC_MSG_RESULT([$am_cv_prog_tar_$1])])
  1072. AC_SUBST([am__tar])
  1073. AC_SUBST([am__untar])
  1074. ]) # _AM_PROG_TAR
  1075. m4_include([m4/autobuild.m4])
  1076. m4_include([m4/lib-ld.m4])
  1077. m4_include([m4/lib-link.m4])
  1078. m4_include([m4/lib-prefix.m4])
  1079. m4_include([m4/libtool.m4])
  1080. m4_include([m4/ltoptions.m4])
  1081. m4_include([m4/ltsugar.m4])
  1082. m4_include([m4/ltversion.m4])
  1083. m4_include([m4/lt~obsolete.m4])
  1084. m4_include([acinclude.m4])