aclocal.m4 44 KB

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  1. # generated automatically by aclocal 1.16.1 -*- Autoconf -*-
  2. # Copyright (C) 1996-2018 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($@)])])
  11. m4_ifndef([AC_AUTOCONF_VERSION],
  12. [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
  13. m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
  14. [m4_warning([this file was generated for autoconf 2.69.
  15. You have another version of autoconf. It may work, but is not guaranteed to.
  16. If you have problems, you may need to regenerate the build system entirely.
  17. To do so, use the procedure documented by the package, typically 'autoreconf'.])])
  18. # visibility.m4 serial 6
  19. dnl Copyright (C) 2005, 2008, 2010-2019 Free Software Foundation, Inc.
  20. dnl This file is free software; the Free Software Foundation
  21. dnl gives unlimited permission to copy and/or distribute it,
  22. dnl with or without modifications, as long as this notice is preserved.
  23. dnl From Bruno Haible.
  24. dnl Tests whether the compiler supports the command-line option
  25. dnl -fvisibility=hidden and the function and variable attributes
  26. dnl __attribute__((__visibility__("hidden"))) and
  27. dnl __attribute__((__visibility__("default"))).
  28. dnl Does *not* test for __visibility__("protected") - which has tricky
  29. dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on
  30. dnl Mac OS X.
  31. dnl Does *not* test for __visibility__("internal") - which has processor
  32. dnl dependent semantics.
  33. dnl Does *not* test for #pragma GCC visibility push(hidden) - which is
  34. dnl "really only recommended for legacy code".
  35. dnl Set the variable CFLAG_VISIBILITY.
  36. dnl Defines and sets the variable HAVE_VISIBILITY.
  37. AC_DEFUN([gl_VISIBILITY],
  38. [
  39. AC_REQUIRE([AC_PROG_CC])
  40. CFLAG_VISIBILITY=
  41. HAVE_VISIBILITY=0
  42. if test -n "$GCC"; then
  43. dnl First, check whether -Werror can be added to the command line, or
  44. dnl whether it leads to an error because of some other option that the
  45. dnl user has put into $CC $CFLAGS $CPPFLAGS.
  46. AC_CACHE_CHECK([whether the -Werror option is usable],
  47. [gl_cv_cc_vis_werror],
  48. [gl_save_CFLAGS="$CFLAGS"
  49. CFLAGS="$CFLAGS -Werror"
  50. AC_COMPILE_IFELSE(
  51. [AC_LANG_PROGRAM([[]], [[]])],
  52. [gl_cv_cc_vis_werror=yes],
  53. [gl_cv_cc_vis_werror=no])
  54. CFLAGS="$gl_save_CFLAGS"
  55. ])
  56. dnl Now check whether visibility declarations are supported.
  57. AC_CACHE_CHECK([for simple visibility declarations],
  58. [gl_cv_cc_visibility],
  59. [gl_save_CFLAGS="$CFLAGS"
  60. CFLAGS="$CFLAGS -fvisibility=hidden"
  61. dnl We use the option -Werror and a function dummyfunc, because on some
  62. dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning
  63. dnl "visibility attribute not supported in this configuration; ignored"
  64. dnl at the first function definition in every compilation unit, and we
  65. dnl don't want to use the option in this case.
  66. if test $gl_cv_cc_vis_werror = yes; then
  67. CFLAGS="$CFLAGS -Werror"
  68. fi
  69. AC_COMPILE_IFELSE(
  70. [AC_LANG_PROGRAM(
  71. [[extern __attribute__((__visibility__("hidden"))) int hiddenvar;
  72. extern __attribute__((__visibility__("default"))) int exportedvar;
  73. extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
  74. extern __attribute__((__visibility__("default"))) int exportedfunc (void);
  75. void dummyfunc (void) {}
  76. ]],
  77. [[]])],
  78. [gl_cv_cc_visibility=yes],
  79. [gl_cv_cc_visibility=no])
  80. CFLAGS="$gl_save_CFLAGS"
  81. ])
  82. if test $gl_cv_cc_visibility = yes; then
  83. CFLAG_VISIBILITY="-fvisibility=hidden"
  84. HAVE_VISIBILITY=1
  85. fi
  86. fi
  87. AC_SUBST([CFLAG_VISIBILITY])
  88. AC_SUBST([HAVE_VISIBILITY])
  89. AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY],
  90. [Define to 1 or 0, depending whether the compiler supports simple visibility declarations.])
  91. ])
  92. # Copyright (C) 2002-2018 Free Software Foundation, Inc.
  93. #
  94. # This file is free software; the Free Software Foundation
  95. # gives unlimited permission to copy and/or distribute it,
  96. # with or without modifications, as long as this notice is preserved.
  97. # AM_AUTOMAKE_VERSION(VERSION)
  98. # ----------------------------
  99. # Automake X.Y traces this macro to ensure aclocal.m4 has been
  100. # generated from the m4 files accompanying Automake X.Y.
  101. # (This private macro should not be called outside this file.)
  102. AC_DEFUN([AM_AUTOMAKE_VERSION],
  103. [am__api_version='1.16'
  104. dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
  105. dnl require some minimum version. Point them to the right macro.
  106. m4_if([$1], [1.16.1], [],
  107. [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
  108. ])
  109. # _AM_AUTOCONF_VERSION(VERSION)
  110. # -----------------------------
  111. # aclocal traces this macro to find the Autoconf version.
  112. # This is a private macro too. Using m4_define simplifies
  113. # the logic in aclocal, which can simply ignore this definition.
  114. m4_define([_AM_AUTOCONF_VERSION], [])
  115. # AM_SET_CURRENT_AUTOMAKE_VERSION
  116. # -------------------------------
  117. # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
  118. # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
  119. AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
  120. [AM_AUTOMAKE_VERSION([1.16.1])dnl
  121. m4_ifndef([AC_AUTOCONF_VERSION],
  122. [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
  123. _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
  124. # AM_AUX_DIR_EXPAND -*- Autoconf -*-
  125. # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  126. #
  127. # This file is free software; the Free Software Foundation
  128. # gives unlimited permission to copy and/or distribute it,
  129. # with or without modifications, as long as this notice is preserved.
  130. # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
  131. # $ac_aux_dir to '$srcdir/foo'. In other projects, it is set to
  132. # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
  133. #
  134. # Of course, Automake must honor this variable whenever it calls a
  135. # tool from the auxiliary directory. The problem is that $srcdir (and
  136. # therefore $ac_aux_dir as well) can be either absolute or relative,
  137. # depending on how configure is run. This is pretty annoying, since
  138. # it makes $ac_aux_dir quite unusable in subdirectories: in the top
  139. # source directory, any form will work fine, but in subdirectories a
  140. # relative path needs to be adjusted first.
  141. #
  142. # $ac_aux_dir/missing
  143. # fails when called from a subdirectory if $ac_aux_dir is relative
  144. # $top_srcdir/$ac_aux_dir/missing
  145. # fails if $ac_aux_dir is absolute,
  146. # fails when called from a subdirectory in a VPATH build with
  147. # a relative $ac_aux_dir
  148. #
  149. # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
  150. # are both prefixed by $srcdir. In an in-source build this is usually
  151. # harmless because $srcdir is '.', but things will broke when you
  152. # start a VPATH build or use an absolute $srcdir.
  153. #
  154. # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
  155. # iff we strip the leading $srcdir from $ac_aux_dir. That would be:
  156. # am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
  157. # and then we would define $MISSING as
  158. # MISSING="\${SHELL} $am_aux_dir/missing"
  159. # This will work as long as MISSING is not called from configure, because
  160. # unfortunately $(top_srcdir) has no meaning in configure.
  161. # However there are other variables, like CC, which are often used in
  162. # configure, and could therefore not use this "fixed" $ac_aux_dir.
  163. #
  164. # Another solution, used here, is to always expand $ac_aux_dir to an
  165. # absolute PATH. The drawback is that using absolute paths prevent a
  166. # configured tree to be moved without reconfiguration.
  167. AC_DEFUN([AM_AUX_DIR_EXPAND],
  168. [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
  169. # Expand $ac_aux_dir to an absolute path.
  170. am_aux_dir=`cd "$ac_aux_dir" && pwd`
  171. ])
  172. # AM_CONDITIONAL -*- Autoconf -*-
  173. # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  174. #
  175. # This file is free software; the Free Software Foundation
  176. # gives unlimited permission to copy and/or distribute it,
  177. # with or without modifications, as long as this notice is preserved.
  178. # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  179. # -------------------------------------
  180. # Define a conditional.
  181. AC_DEFUN([AM_CONDITIONAL],
  182. [AC_PREREQ([2.52])dnl
  183. m4_if([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])],
  184. [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  185. AC_SUBST([$1_TRUE])dnl
  186. AC_SUBST([$1_FALSE])dnl
  187. _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  188. _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  189. m4_define([_AM_COND_VALUE_$1], [$2])dnl
  190. if $2; then
  191. $1_TRUE=
  192. $1_FALSE='#'
  193. else
  194. $1_TRUE='#'
  195. $1_FALSE=
  196. fi
  197. AC_CONFIG_COMMANDS_PRE(
  198. [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  199. AC_MSG_ERROR([[conditional "$1" was never defined.
  200. Usually this means the macro was only invoked conditionally.]])
  201. fi])])
  202. # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  203. #
  204. # This file is free software; the Free Software Foundation
  205. # gives unlimited permission to copy and/or distribute it,
  206. # with or without modifications, as long as this notice is preserved.
  207. # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  208. # written in clear, in which case automake, when reading aclocal.m4,
  209. # will think it sees a *use*, and therefore will trigger all it's
  210. # C support machinery. Also note that it means that autoscan, seeing
  211. # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  212. # _AM_DEPENDENCIES(NAME)
  213. # ----------------------
  214. # See how the compiler implements dependency checking.
  215. # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
  216. # We try a few techniques and use that to set a single cache variable.
  217. #
  218. # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  219. # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  220. # dependency, and given that the user is not expected to run this macro,
  221. # just rely on AC_PROG_CC.
  222. AC_DEFUN([_AM_DEPENDENCIES],
  223. [AC_REQUIRE([AM_SET_DEPDIR])dnl
  224. AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  225. AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  226. AC_REQUIRE([AM_DEP_TRACK])dnl
  227. m4_if([$1], [CC], [depcc="$CC" am_compiler_list=],
  228. [$1], [CXX], [depcc="$CXX" am_compiler_list=],
  229. [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
  230. [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
  231. [$1], [UPC], [depcc="$UPC" am_compiler_list=],
  232. [$1], [GCJ], [depcc="$GCJ" am_compiler_list='gcc3 gcc'],
  233. [depcc="$$1" am_compiler_list=])
  234. AC_CACHE_CHECK([dependency style of $depcc],
  235. [am_cv_$1_dependencies_compiler_type],
  236. [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  237. # We make a subdir and do the tests there. Otherwise we can end up
  238. # making bogus files that we don't know about and never remove. For
  239. # instance it was reported that on HP-UX the gcc test will end up
  240. # making a dummy file named 'D' -- because '-MD' means "put the output
  241. # in D".
  242. rm -rf conftest.dir
  243. mkdir conftest.dir
  244. # Copy depcomp to subdir because otherwise we won't find it if we're
  245. # using a relative directory.
  246. cp "$am_depcomp" conftest.dir
  247. cd conftest.dir
  248. # We will build objects and dependencies in a subdirectory because
  249. # it helps to detect inapplicable dependency modes. For instance
  250. # both Tru64's cc and ICC support -MD to output dependencies as a
  251. # side effect of compilation, but ICC will put the dependencies in
  252. # the current directory while Tru64 will put them in the object
  253. # directory.
  254. mkdir sub
  255. am_cv_$1_dependencies_compiler_type=none
  256. if test "$am_compiler_list" = ""; then
  257. am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  258. fi
  259. am__universal=false
  260. m4_case([$1], [CC],
  261. [case " $depcc " in #(
  262. *\ -arch\ *\ -arch\ *) am__universal=true ;;
  263. esac],
  264. [CXX],
  265. [case " $depcc " in #(
  266. *\ -arch\ *\ -arch\ *) am__universal=true ;;
  267. esac])
  268. for depmode in $am_compiler_list; do
  269. # Setup a source with many dependencies, because some compilers
  270. # like to wrap large dependency lists on column 80 (with \), and
  271. # we should not choose a depcomp mode which is confused by this.
  272. #
  273. # We need to recreate these files for each test, as the compiler may
  274. # overwrite some of them when testing with obscure command lines.
  275. # This happens at least with the AIX C compiler.
  276. : > sub/conftest.c
  277. for i in 1 2 3 4 5 6; do
  278. echo '#include "conftst'$i'.h"' >> sub/conftest.c
  279. # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  280. # Solaris 10 /bin/sh.
  281. echo '/* dummy */' > sub/conftst$i.h
  282. done
  283. echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  284. # We check with '-c' and '-o' for the sake of the "dashmstdout"
  285. # mode. It turns out that the SunPro C++ compiler does not properly
  286. # handle '-M -o', and we need to detect this. Also, some Intel
  287. # versions had trouble with output in subdirs.
  288. am__obj=sub/conftest.${OBJEXT-o}
  289. am__minus_obj="-o $am__obj"
  290. case $depmode in
  291. gcc)
  292. # This depmode causes a compiler race in universal mode.
  293. test "$am__universal" = false || continue
  294. ;;
  295. nosideeffect)
  296. # After this tag, mechanisms are not by side-effect, so they'll
  297. # only be used when explicitly requested.
  298. if test "x$enable_dependency_tracking" = xyes; then
  299. continue
  300. else
  301. break
  302. fi
  303. ;;
  304. msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  305. # This compiler won't grok '-c -o', but also, the minuso test has
  306. # not run yet. These depmodes are late enough in the game, and
  307. # so weak that their functioning should not be impacted.
  308. am__obj=conftest.${OBJEXT-o}
  309. am__minus_obj=
  310. ;;
  311. none) break ;;
  312. esac
  313. if depmode=$depmode \
  314. source=sub/conftest.c object=$am__obj \
  315. depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  316. $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  317. >/dev/null 2>conftest.err &&
  318. grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  319. grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  320. grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  321. ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  322. # icc doesn't choke on unknown options, it will just issue warnings
  323. # or remarks (even with -Werror). So we grep stderr for any message
  324. # that says an option was ignored or not supported.
  325. # When given -MP, icc 7.0 and 7.1 complain thusly:
  326. # icc: Command line warning: ignoring option '-M'; no argument required
  327. # The diagnosis changed in icc 8.0:
  328. # icc: Command line remark: option '-MP' not supported
  329. if (grep 'ignoring option' conftest.err ||
  330. grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  331. am_cv_$1_dependencies_compiler_type=$depmode
  332. break
  333. fi
  334. fi
  335. done
  336. cd ..
  337. rm -rf conftest.dir
  338. else
  339. am_cv_$1_dependencies_compiler_type=none
  340. fi
  341. ])
  342. AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  343. AM_CONDITIONAL([am__fastdep$1], [
  344. test "x$enable_dependency_tracking" != xno \
  345. && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  346. ])
  347. # AM_SET_DEPDIR
  348. # -------------
  349. # Choose a directory name for dependency files.
  350. # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  351. AC_DEFUN([AM_SET_DEPDIR],
  352. [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  353. AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  354. ])
  355. # AM_DEP_TRACK
  356. # ------------
  357. AC_DEFUN([AM_DEP_TRACK],
  358. [AC_ARG_ENABLE([dependency-tracking], [dnl
  359. AS_HELP_STRING(
  360. [--enable-dependency-tracking],
  361. [do not reject slow dependency extractors])
  362. AS_HELP_STRING(
  363. [--disable-dependency-tracking],
  364. [speeds up one-time build])])
  365. if test "x$enable_dependency_tracking" != xno; then
  366. am_depcomp="$ac_aux_dir/depcomp"
  367. AMDEPBACKSLASH='\'
  368. am__nodep='_no'
  369. fi
  370. AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  371. AC_SUBST([AMDEPBACKSLASH])dnl
  372. _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  373. AC_SUBST([am__nodep])dnl
  374. _AM_SUBST_NOTMAKE([am__nodep])dnl
  375. ])
  376. # Generate code to set up dependency tracking. -*- Autoconf -*-
  377. # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  378. #
  379. # This file is free software; the Free Software Foundation
  380. # gives unlimited permission to copy and/or distribute it,
  381. # with or without modifications, as long as this notice is preserved.
  382. # _AM_OUTPUT_DEPENDENCY_COMMANDS
  383. # ------------------------------
  384. AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  385. [{
  386. # Older Autoconf quotes --file arguments for eval, but not when files
  387. # are listed without --file. Let's play safe and only enable the eval
  388. # if we detect the quoting.
  389. # TODO: see whether this extra hack can be removed once we start
  390. # requiring Autoconf 2.70 or later.
  391. AS_CASE([$CONFIG_FILES],
  392. [*\'*], [eval set x "$CONFIG_FILES"],
  393. [*], [set x $CONFIG_FILES])
  394. shift
  395. # Used to flag and report bootstrapping failures.
  396. am_rc=0
  397. for am_mf
  398. do
  399. # Strip MF so we end up with the name of the file.
  400. am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  401. # Check whether this is an Automake generated Makefile which includes
  402. # dependency-tracking related rules and includes.
  403. # Grep'ing the whole file directly is not great: AIX grep has a line
  404. # limit of 2048, but all sed's we know have understand at least 4000.
  405. sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  406. || continue
  407. am_dirpart=`AS_DIRNAME(["$am_mf"])`
  408. am_filepart=`AS_BASENAME(["$am_mf"])`
  409. AM_RUN_LOG([cd "$am_dirpart" \
  410. && sed -e '/# am--include-marker/d' "$am_filepart" \
  411. | $MAKE -f - am--depfiles]) || am_rc=$?
  412. done
  413. if test $am_rc -ne 0; then
  414. AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  415. for automatic dependency tracking. Try re-running configure with the
  416. '--disable-dependency-tracking' option to at least be able to build
  417. the package (albeit without support for automatic dependency tracking).])
  418. fi
  419. AS_UNSET([am_dirpart])
  420. AS_UNSET([am_filepart])
  421. AS_UNSET([am_mf])
  422. AS_UNSET([am_rc])
  423. rm -f conftest-deps.mk
  424. }
  425. ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  426. # AM_OUTPUT_DEPENDENCY_COMMANDS
  427. # -----------------------------
  428. # This macro should only be invoked once -- use via AC_REQUIRE.
  429. #
  430. # This code is only required when automatic dependency tracking is enabled.
  431. # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  432. # order to bootstrap the dependency handling code.
  433. AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  434. [AC_CONFIG_COMMANDS([depfiles],
  435. [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  436. [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  437. # Do all the work for Automake. -*- Autoconf -*-
  438. # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  439. #
  440. # This file is free software; the Free Software Foundation
  441. # gives unlimited permission to copy and/or distribute it,
  442. # with or without modifications, as long as this notice is preserved.
  443. # This macro actually does too much. Some checks are only needed if
  444. # your package does certain things. But this isn't really a big deal.
  445. dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  446. m4_define([AC_PROG_CC],
  447. m4_defn([AC_PROG_CC])
  448. [_AM_PROG_CC_C_O
  449. ])
  450. # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  451. # AM_INIT_AUTOMAKE([OPTIONS])
  452. # -----------------------------------------------
  453. # The call with PACKAGE and VERSION arguments is the old style
  454. # call (pre autoconf-2.50), which is being phased out. PACKAGE
  455. # and VERSION should now be passed to AC_INIT and removed from
  456. # the call to AM_INIT_AUTOMAKE.
  457. # We support both call styles for the transition. After
  458. # the next Automake release, Autoconf can make the AC_INIT
  459. # arguments mandatory, and then we can depend on a new Autoconf
  460. # release and drop the old call support.
  461. AC_DEFUN([AM_INIT_AUTOMAKE],
  462. [AC_PREREQ([2.65])dnl
  463. dnl Autoconf wants to disallow AM_ names. We explicitly allow
  464. dnl the ones we care about.
  465. m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  466. AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  467. AC_REQUIRE([AC_PROG_INSTALL])dnl
  468. if test "`cd $srcdir && pwd`" != "`pwd`"; then
  469. # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  470. # is not polluted with repeated "-I."
  471. AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  472. # test to see if srcdir already configured
  473. if test -f $srcdir/config.status; then
  474. AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  475. fi
  476. fi
  477. # test whether we have cygpath
  478. if test -z "$CYGPATH_W"; then
  479. if (cygpath --version) >/dev/null 2>/dev/null; then
  480. CYGPATH_W='cygpath -w'
  481. else
  482. CYGPATH_W=echo
  483. fi
  484. fi
  485. AC_SUBST([CYGPATH_W])
  486. # Define the identity of the package.
  487. dnl Distinguish between old-style and new-style calls.
  488. m4_ifval([$2],
  489. [AC_DIAGNOSE([obsolete],
  490. [$0: two- and three-arguments forms are deprecated.])
  491. m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  492. AC_SUBST([PACKAGE], [$1])dnl
  493. AC_SUBST([VERSION], [$2])],
  494. [_AM_SET_OPTIONS([$1])dnl
  495. dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  496. m4_if(
  497. m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
  498. [ok:ok],,
  499. [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  500. AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  501. AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  502. _AM_IF_OPTION([no-define],,
  503. [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  504. AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  505. # Some tools Automake needs.
  506. AC_REQUIRE([AM_SANITY_CHECK])dnl
  507. AC_REQUIRE([AC_ARG_PROGRAM])dnl
  508. AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  509. AM_MISSING_PROG([AUTOCONF], [autoconf])
  510. AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  511. AM_MISSING_PROG([AUTOHEADER], [autoheader])
  512. AM_MISSING_PROG([MAKEINFO], [makeinfo])
  513. AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  514. AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  515. AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  516. # For better backward compatibility. To be removed once Automake 1.9.x
  517. # dies out for good. For more background, see:
  518. # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  519. # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  520. AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  521. # We need awk for the "check" target (and possibly the TAP driver). The
  522. # system "awk" is bad on some platforms.
  523. AC_REQUIRE([AC_PROG_AWK])dnl
  524. AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  525. AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  526. _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  527. [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  528. [_AM_PROG_TAR([v7])])])
  529. _AM_IF_OPTION([no-dependencies],,
  530. [AC_PROVIDE_IFELSE([AC_PROG_CC],
  531. [_AM_DEPENDENCIES([CC])],
  532. [m4_define([AC_PROG_CC],
  533. m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  534. AC_PROVIDE_IFELSE([AC_PROG_CXX],
  535. [_AM_DEPENDENCIES([CXX])],
  536. [m4_define([AC_PROG_CXX],
  537. m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  538. AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  539. [_AM_DEPENDENCIES([OBJC])],
  540. [m4_define([AC_PROG_OBJC],
  541. m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  542. AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  543. [_AM_DEPENDENCIES([OBJCXX])],
  544. [m4_define([AC_PROG_OBJCXX],
  545. m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  546. ])
  547. AC_REQUIRE([AM_SILENT_RULES])dnl
  548. dnl The testsuite driver may need to know about EXEEXT, so add the
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  550. dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  551. AC_CONFIG_COMMANDS_PRE(dnl
  552. [m4_provide_if([_AM_COMPILER_EXEEXT],
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  554. # POSIX will say in a future version that running "rm -f" with no argument
  555. # is OK; and we want to be able to make that assumption in our Makefile
  556. # recipes. So use an aggressive probe to check that the usage we want is
  557. # actually supported "in the wild" to an acceptable degree.
  558. # See automake bug#10828.
  559. # To make any issue more visible, cause the running configure to be aborted
  560. # by default if the 'rm' program in use doesn't match our expectations; the
  561. # user can still override this though.
  562. if rm -f && rm -fr && rm -rf; then : OK; else
  563. cat >&2 <<'END'
  564. Oops!
  565. Your 'rm' program seems unable to run without file operands specified
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  567. to the behaviour of most rm programs out there, and not conforming with
  568. the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  569. Please tell bug-automake@gnu.org about your system, including the value
  570. of your $PATH and any error possibly output before this message. This
  571. can help us improve future automake versions.
  572. END
  573. if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  574. echo 'Configuration will proceed anyway, since you have set the' >&2
  575. echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  576. echo >&2
  577. else
  578. cat >&2 <<'END'
  579. Aborting the configuration process, to ensure you take notice of the issue.
  580. You can download and install GNU coreutils to get an 'rm' implementation
  581. that behaves properly: <https://www.gnu.org/software/coreutils/>.
  582. If you want to complete the configuration process using your problematic
  583. 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  584. to "yes", and re-run configure.
  585. END
  586. AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  587. fi
  588. fi
  589. dnl The trailing newline in this macro's definition is deliberate, for
  590. dnl backward compatibility and to allow trailing 'dnl'-style comments
  591. dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  592. ])
  593. dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
  594. dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  595. dnl mangled by Autoconf and run in a shell conditional statement.
  596. m4_define([_AC_COMPILER_EXEEXT],
  597. m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  598. # When config.status generates a header, we must update the stamp-h file.
  599. # This file resides in the same directory as the config header
  600. # that is generated. The stamp files are numbered to have different names.
  601. # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
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  603. # our stamp files there.
  604. AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  605. [# Compute $1's index in $config_headers.
  606. _am_arg=$1
  607. _am_stamp_count=1
  608. for _am_header in $config_headers :; do
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  615. done
  616. echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  617. # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  618. #
  619. # This file is free software; the Free Software Foundation
  620. # gives unlimited permission to copy and/or distribute it,
  621. # with or without modifications, as long as this notice is preserved.
  622. # AM_PROG_INSTALL_SH
  623. # ------------------
  624. # Define $install_sh.
  625. AC_DEFUN([AM_PROG_INSTALL_SH],
  626. [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  627. if test x"${install_sh+set}" != xset; then
  628. case $am_aux_dir in
  629. *\ * | *\ *)
  630. install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  631. *)
  632. install_sh="\${SHELL} $am_aux_dir/install-sh"
  633. esac
  634. fi
  635. AC_SUBST([install_sh])])
  636. # Copyright (C) 2003-2018 Free Software Foundation, Inc.
  637. #
  638. # This file is free software; the Free Software Foundation
  639. # gives unlimited permission to copy and/or distribute it,
  640. # with or without modifications, as long as this notice is preserved.
  641. # Check whether the underlying file-system supports filenames
  642. # with a leading dot. For instance MS-DOS doesn't.
  643. AC_DEFUN([AM_SET_LEADING_DOT],
  644. [rm -rf .tst 2>/dev/null
  645. mkdir .tst 2>/dev/null
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  647. am__leading_dot=.
  648. else
  649. am__leading_dot=_
  650. fi
  651. rmdir .tst 2>/dev/null
  652. AC_SUBST([am__leading_dot])])
  653. # Check to see how 'make' treats includes. -*- Autoconf -*-
  654. # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  655. #
  656. # This file is free software; the Free Software Foundation
  657. # gives unlimited permission to copy and/or distribute it,
  658. # with or without modifications, as long as this notice is preserved.
  659. # AM_MAKE_INCLUDE()
  660. # -----------------
  661. # Check whether make has an 'include' directive that can support all
  662. # the idioms we need for our automatic dependency tracking code.
  663. AC_DEFUN([AM_MAKE_INCLUDE],
  664. [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
  665. cat > confinc.mk << 'END'
  666. am__doit:
  667. @echo this is the am__doit target >confinc.out
  668. .PHONY: am__doit
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  670. am__include="#"
  671. am__quote=
  672. # BSD make does it like this.
  673. echo '.include "confinc.mk" # ignored' > confmf.BSD
  674. # Other make implementations (GNU, Solaris 10, AIX) do it like this.
  675. echo 'include confinc.mk # ignored' > confmf.GNU
  676. _am_result=no
  677. for s in GNU BSD; do
  678. AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
  679. AS_CASE([$?:`cat confinc.out 2>/dev/null`],
  680. ['0:this is the am__doit target'],
  681. [AS_CASE([$s],
  682. [BSD], [am__include='.include' am__quote='"'],
  683. [am__include='include' am__quote=''])])
  684. if test "$am__include" != "#"; then
  685. _am_result="yes ($s style)"
  686. break
  687. fi
  688. done
  689. rm -f confinc.* confmf.*
  690. AC_MSG_RESULT([${_am_result}])
  691. AC_SUBST([am__include])])
  692. AC_SUBST([am__quote])])
  693. # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
  694. # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  695. #
  696. # This file is free software; the Free Software Foundation
  697. # gives unlimited permission to copy and/or distribute it,
  698. # with or without modifications, as long as this notice is preserved.
  699. # AM_MISSING_PROG(NAME, PROGRAM)
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  701. AC_DEFUN([AM_MISSING_PROG],
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  705. # AM_MISSING_HAS_RUN
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  711. AC_REQUIRE_AUX_FILE([missing])dnl
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  728. # Helper functions for option handling. -*- Autoconf -*-
  729. # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  730. #
  731. # This file is free software; the Free Software Foundation
  732. # gives unlimited permission to copy and/or distribute it,
  733. # with or without modifications, as long as this notice is preserved.
  734. # _AM_MANGLE_OPTION(NAME)
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  736. AC_DEFUN([_AM_MANGLE_OPTION],
  737. [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
  738. # _AM_SET_OPTION(NAME)
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  743. # _AM_SET_OPTIONS(OPTIONS)
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  748. # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
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  751. AC_DEFUN([_AM_IF_OPTION],
  752. [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
  753. # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  754. #
  755. # This file is free software; the Free Software Foundation
  756. # gives unlimited permission to copy and/or distribute it,
  757. # with or without modifications, as long as this notice is preserved.
  758. # _AM_PROG_CC_C_O
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  762. AC_DEFUN([_AM_PROG_CC_C_O],
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  764. AC_REQUIRE_AUX_FILE([compile])dnl
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  766. AC_CACHE_CHECK(
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  770. # Make sure it works both with $CC and with simple cc.
  771. # Following AC_PROG_CC_C_O, we do the test twice because some
  772. # compilers refuse to overwrite an existing .o file with -o,
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  774. am_cv_prog_cc_c_o=yes
  775. for am_i in 1 2; do
  776. if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
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  780. am_cv_prog_cc_c_o=no
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  784. rm -f core conftest*
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  786. if test "$am_cv_prog_cc_c_o" != yes; then
  787. # Losing compiler, so override with the script.
  788. # FIXME: It is wrong to rewrite CC.
  789. # But if we don't then we get into trouble of one sort or another.
  790. # A longer-term fix would be to have automake use am__CC in this case,
  791. # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
  792. CC="$am_aux_dir/compile $CC"
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  794. AC_LANG_POP([C])])
  795. # For backward compatibility.
  796. AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
  797. # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  798. #
  799. # This file is free software; the Free Software Foundation
  800. # gives unlimited permission to copy and/or distribute it,
  801. # with or without modifications, as long as this notice is preserved.
  802. # AM_RUN_LOG(COMMAND)
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  810. echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
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  812. # Check to make sure that the build environment is sane. -*- Autoconf -*-
  813. # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  814. #
  815. # This file is free software; the Free Software Foundation
  816. # gives unlimited permission to copy and/or distribute it,
  817. # with or without modifications, as long as this notice is preserved.
  818. # AM_SANITY_CHECK
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  820. AC_DEFUN([AM_SANITY_CHECK],
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  822. # Reject unsafe characters in $srcdir or the absolute working directory
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  828. AC_MSG_ERROR([unsafe absolute working directory name]);;
  829. esac
  830. case $srcdir in
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  832. AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
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  834. # Do 'set' in a subshell so we don't clobber the current shell's
  835. # arguments. Must try -L first in case configure is actually a
  836. # symlink; some systems play weird games with the mod time of symlinks
  837. # (eg FreeBSD returns the mod time of the symlink's containing
  838. # directory).
  839. if (
  840. am_has_slept=no
  841. for am_try in 1 2; do
  842. echo "timestamp, slept: $am_has_slept" > conftest.file
  843. set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
  844. if test "$[*]" = "X"; then
  845. # -L didn't work.
  846. set X `ls -t "$srcdir/configure" conftest.file`
  847. fi
  848. if test "$[*]" != "X $srcdir/configure conftest.file" \
  849. && test "$[*]" != "X conftest.file $srcdir/configure"; then
  850. # If neither matched, then we have a broken ls. This can happen
  851. # if, for instance, CONFIG_SHELL is bash and it inherits a
  852. # broken ls alias from the environment. This has actually
  853. # happened. Such a system could not be considered "sane".
  854. AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
  855. alias in your environment])
  856. fi
  857. if test "$[2]" = conftest.file || test $am_try -eq 2; then
  858. break
  859. fi
  860. # Just in case.
  861. sleep 1
  862. am_has_slept=yes
  863. done
  864. test "$[2]" = conftest.file
  865. )
  866. then
  867. # Ok.
  868. :
  869. else
  870. AC_MSG_ERROR([newly created file is older than distributed files!
  871. Check your system clock])
  872. fi
  873. AC_MSG_RESULT([yes])
  874. # If we didn't sleep, we still need to ensure time stamps of config.status and
  875. # generated files are strictly newer.
  876. am_sleep_pid=
  877. if grep 'slept: no' conftest.file >/dev/null 2>&1; then
  878. ( sleep 1 ) &
  879. am_sleep_pid=$!
  880. fi
  881. AC_CONFIG_COMMANDS_PRE(
  882. [AC_MSG_CHECKING([that generated files are newer than configure])
  883. if test -n "$am_sleep_pid"; then
  884. # Hide warnings about reused PIDs.
  885. wait $am_sleep_pid 2>/dev/null
  886. fi
  887. AC_MSG_RESULT([done])])
  888. rm -f conftest.file
  889. ])
  890. # Copyright (C) 2009-2018 Free Software Foundation, Inc.
  891. #
  892. # This file is free software; the Free Software Foundation
  893. # gives unlimited permission to copy and/or distribute it,
  894. # with or without modifications, as long as this notice is preserved.
  895. # AM_SILENT_RULES([DEFAULT])
  896. # --------------------------
  897. # Enable less verbose build rules; with the default set to DEFAULT
  898. # ("yes" being less verbose, "no" or empty being verbose).
  899. AC_DEFUN([AM_SILENT_RULES],
  900. [AC_ARG_ENABLE([silent-rules], [dnl
  901. AS_HELP_STRING(
  902. [--enable-silent-rules],
  903. [less verbose build output (undo: "make V=1")])
  904. AS_HELP_STRING(
  905. [--disable-silent-rules],
  906. [verbose build output (undo: "make V=0")])dnl
  907. ])
  908. case $enable_silent_rules in @%:@ (((
  909. yes) AM_DEFAULT_VERBOSITY=0;;
  910. no) AM_DEFAULT_VERBOSITY=1;;
  911. *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
  912. esac
  913. dnl
  914. dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
  915. dnl do not support nested variable expansions.
  916. dnl See automake bug#9928 and bug#10237.
  917. am_make=${MAKE-make}
  918. AC_CACHE_CHECK([whether $am_make supports nested variables],
  919. [am_cv_make_support_nested_variables],
  920. [if AS_ECHO([['TRUE=$(BAR$(V))
  921. BAR0=false
  922. BAR1=true
  923. V=1
  924. am__doit:
  925. @$(TRUE)
  926. .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
  927. am_cv_make_support_nested_variables=yes
  928. else
  929. am_cv_make_support_nested_variables=no
  930. fi])
  931. if test $am_cv_make_support_nested_variables = yes; then
  932. dnl Using '$V' instead of '$(V)' breaks IRIX make.
  933. AM_V='$(V)'
  934. AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
  935. else
  936. AM_V=$AM_DEFAULT_VERBOSITY
  937. AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
  938. fi
  939. AC_SUBST([AM_V])dnl
  940. AM_SUBST_NOTMAKE([AM_V])dnl
  941. AC_SUBST([AM_DEFAULT_V])dnl
  942. AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
  943. AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
  944. AM_BACKSLASH='\'
  945. AC_SUBST([AM_BACKSLASH])dnl
  946. _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
  947. ])
  948. # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  949. #
  950. # This file is free software; the Free Software Foundation
  951. # gives unlimited permission to copy and/or distribute it,
  952. # with or without modifications, as long as this notice is preserved.
  953. # AM_PROG_INSTALL_STRIP
  954. # ---------------------
  955. # One issue with vendor 'install' (even GNU) is that you can't
  956. # specify the program used to strip binaries. This is especially
  957. # annoying in cross-compiling environments, where the build's strip
  958. # is unlikely to handle the host's binaries.
  959. # Fortunately install-sh will honor a STRIPPROG variable, so we
  960. # always use install-sh in "make install-strip", and initialize
  961. # STRIPPROG with the value of the STRIP variable (set by the user).
  962. AC_DEFUN([AM_PROG_INSTALL_STRIP],
  963. [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  964. # Installed binaries are usually stripped using 'strip' when the user
  965. # run "make install-strip". However 'strip' might not be the right
  966. # tool to use in cross-compilation environments, therefore Automake
  967. # will honor the 'STRIP' environment variable to overrule this program.
  968. dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
  969. if test "$cross_compiling" != no; then
  970. AC_CHECK_TOOL([STRIP], [strip], :)
  971. fi
  972. INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
  973. AC_SUBST([INSTALL_STRIP_PROGRAM])])
  974. # Copyright (C) 2006-2018 Free Software Foundation, Inc.
  975. #
  976. # This file is free software; the Free Software Foundation
  977. # gives unlimited permission to copy and/or distribute it,
  978. # with or without modifications, as long as this notice is preserved.
  979. # _AM_SUBST_NOTMAKE(VARIABLE)
  980. # ---------------------------
  981. # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
  982. # This macro is traced by Automake.
  983. AC_DEFUN([_AM_SUBST_NOTMAKE])
  984. # AM_SUBST_NOTMAKE(VARIABLE)
  985. # --------------------------
  986. # Public sister of _AM_SUBST_NOTMAKE.
  987. AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
  988. # Check how to create a tarball. -*- Autoconf -*-
  989. # Copyright (C) 2004-2018 Free Software Foundation, Inc.
  990. #
  991. # This file is free software; the Free Software Foundation
  992. # gives unlimited permission to copy and/or distribute it,
  993. # with or without modifications, as long as this notice is preserved.
  994. # _AM_PROG_TAR(FORMAT)
  995. # --------------------
  996. # Check how to create a tarball in format FORMAT.
  997. # FORMAT should be one of 'v7', 'ustar', or 'pax'.
  998. #
  999. # Substitute a variable $(am__tar) that is a command
  1000. # writing to stdout a FORMAT-tarball containing the directory
  1001. # $tardir.
  1002. # tardir=directory && $(am__tar) > result.tar
  1003. #
  1004. # Substitute a variable $(am__untar) that extract such
  1005. # a tarball read from stdin.
  1006. # $(am__untar) < result.tar
  1007. #
  1008. AC_DEFUN([_AM_PROG_TAR],
  1009. [# Always define AMTAR for backward compatibility. Yes, it's still used
  1010. # in the wild :-( We should find a proper way to deprecate it ...
  1011. AC_SUBST([AMTAR], ['$${TAR-tar}'])
  1012. # We'll loop over all known methods to create a tar archive until one works.
  1013. _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
  1014. m4_if([$1], [v7],
  1015. [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
  1016. [m4_case([$1],
  1017. [ustar],
  1018. [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
  1019. # There is notably a 21 bits limit for the UID and the GID. In fact,
  1020. # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
  1021. # and bug#13588).
  1022. am_max_uid=2097151 # 2^21 - 1
  1023. am_max_gid=$am_max_uid
  1024. # The $UID and $GID variables are not portable, so we need to resort
  1025. # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
  1026. # below are definitely unexpected, so allow the users to see them
  1027. # (that is, avoid stderr redirection).
  1028. am_uid=`id -u || echo unknown`
  1029. am_gid=`id -g || echo unknown`
  1030. AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
  1031. if test $am_uid -le $am_max_uid; then
  1032. AC_MSG_RESULT([yes])
  1033. else
  1034. AC_MSG_RESULT([no])
  1035. _am_tools=none
  1036. fi
  1037. AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
  1038. if test $am_gid -le $am_max_gid; then
  1039. AC_MSG_RESULT([yes])
  1040. else
  1041. AC_MSG_RESULT([no])
  1042. _am_tools=none
  1043. fi],
  1044. [pax],
  1045. [],
  1046. [m4_fatal([Unknown tar format])])
  1047. AC_MSG_CHECKING([how to create a $1 tar archive])
  1048. # Go ahead even if we have the value already cached. We do so because we
  1049. # need to set the values for the 'am__tar' and 'am__untar' variables.
  1050. _am_tools=${am_cv_prog_tar_$1-$_am_tools}
  1051. for _am_tool in $_am_tools; do
  1052. case $_am_tool in
  1053. gnutar)
  1054. for _am_tar in tar gnutar gtar; do
  1055. AM_RUN_LOG([$_am_tar --version]) && break
  1056. done
  1057. am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
  1058. am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
  1059. am__untar="$_am_tar -xf -"
  1060. ;;
  1061. plaintar)
  1062. # Must skip GNU tar: if it does not support --format= it doesn't create
  1063. # ustar tarball either.
  1064. (tar --version) >/dev/null 2>&1 && continue
  1065. am__tar='tar chf - "$$tardir"'
  1066. am__tar_='tar chf - "$tardir"'
  1067. am__untar='tar xf -'
  1068. ;;
  1069. pax)
  1070. am__tar='pax -L -x $1 -w "$$tardir"'
  1071. am__tar_='pax -L -x $1 -w "$tardir"'
  1072. am__untar='pax -r'
  1073. ;;
  1074. cpio)
  1075. am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
  1076. am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
  1077. am__untar='cpio -i -H $1 -d'
  1078. ;;
  1079. none)
  1080. am__tar=false
  1081. am__tar_=false
  1082. am__untar=false
  1083. ;;
  1084. esac
  1085. # If the value was cached, stop now. We just wanted to have am__tar
  1086. # and am__untar set.
  1087. test -n "${am_cv_prog_tar_$1}" && break
  1088. # tar/untar a dummy directory, and stop if the command works.
  1089. rm -rf conftest.dir
  1090. mkdir conftest.dir
  1091. echo GrepMe > conftest.dir/file
  1092. AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
  1093. rm -rf conftest.dir
  1094. if test -s conftest.tar; then
  1095. AM_RUN_LOG([$am__untar <conftest.tar])
  1096. AM_RUN_LOG([cat conftest.dir/file])
  1097. grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
  1098. fi
  1099. done
  1100. rm -rf conftest.dir
  1101. AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
  1102. AC_MSG_RESULT([$am_cv_prog_tar_$1])])
  1103. AC_SUBST([am__tar])
  1104. AC_SUBST([am__untar])
  1105. ]) # _AM_PROG_TAR
  1106. m4_include([m4/libtool.m4])
  1107. m4_include([m4/ltoptions.m4])
  1108. m4_include([m4/ltsugar.m4])
  1109. m4_include([m4/ltversion.m4])
  1110. m4_include([m4/lt~obsolete.m4])
  1111. m4_include([acinclude.m4])