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      1 # generated automatically by aclocal 1.14.1 -*- Autoconf -*-
      2 
      3 # Copyright (C) 1996-2013 Free Software Foundation, Inc.
      4 
      5 # This file is free software; the Free Software Foundation
      6 # gives unlimited permission to copy and/or distribute it,
      7 # with or without modifications, as long as this notice is preserved.
      8 
      9 # This program is distributed in the hope that it will be useful,
     10 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
     11 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
     12 # PARTICULAR PURPOSE.
     13 
     14 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
     15 m4_ifndef([AC_AUTOCONF_VERSION],
     16   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
     17 m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
     18 [m4_warning([this file was generated for autoconf 2.69.
     19 You have another version of autoconf.  It may work, but is not guaranteed to.
     20 If you have problems, you may need to regenerate the build system entirely.
     21 To do so, use the procedure documented by the package, typically 'autoreconf'.])])
     22 
     23 # Copyright (C) 2002-2013 Free Software Foundation, Inc.
     24 #
     25 # This file is free software; the Free Software Foundation
     26 # gives unlimited permission to copy and/or distribute it,
     27 # with or without modifications, as long as this notice is preserved.
     28 
     29 # AM_AUTOMAKE_VERSION(VERSION)
     30 # ----------------------------
     31 # Automake X.Y traces this macro to ensure aclocal.m4 has been
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     33 # (This private macro should not be called outside this file.)
     34 AC_DEFUN([AM_AUTOMAKE_VERSION],
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     42 # _AM_AUTOCONF_VERSION(VERSION)
     43 # -----------------------------
     44 # aclocal traces this macro to find the Autoconf version.
     45 # This is a private macro too.  Using m4_define simplifies
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     47 m4_define([_AM_AUTOCONF_VERSION], [])
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     49 # AM_SET_CURRENT_AUTOMAKE_VERSION
     50 # -------------------------------
     51 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
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     53 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
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     55 m4_ifndef([AC_AUTOCONF_VERSION],
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     58 
     59 # Figure out how to run the assembler.                      -*- Autoconf -*-
     60 
     61 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
     62 #
     63 # This file is free software; the Free Software Foundation
     64 # gives unlimited permission to copy and/or distribute it,
     65 # with or without modifications, as long as this notice is preserved.
     66 
     67 # AM_PROG_AS
     68 # ----------
     69 AC_DEFUN([AM_PROG_AS],
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     77 ])
     78 
     79 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
     80 
     81 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
     82 #
     83 # This file is free software; the Free Software Foundation
     84 # gives unlimited permission to copy and/or distribute it,
     85 # with or without modifications, as long as this notice is preserved.
     86 
     87 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
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     89 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
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     92 # tool from the auxiliary directory.  The problem is that $srcdir (and
     93 # therefore $ac_aux_dir as well) can be either absolute or relative,
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     99 # $ac_aux_dir/missing
    100 #    fails when called from a subdirectory if $ac_aux_dir is relative
    101 # $top_srcdir/$ac_aux_dir/missing
    102 #    fails if $ac_aux_dir is absolute,
    103 #    fails when called from a subdirectory in a VPATH build with
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    131 
    132 # AM_CONDITIONAL                                            -*- Autoconf -*-
    133 
    134 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
    135 #
    136 # This file is free software; the Free Software Foundation
    137 # gives unlimited permission to copy and/or distribute it,
    138 # with or without modifications, as long as this notice is preserved.
    139 
    140 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
    141 # -------------------------------------
    142 # Define a conditional.
    143 AC_DEFUN([AM_CONDITIONAL],
    144 [AC_PREREQ([2.52])dnl
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    148 AC_SUBST([$1_FALSE])dnl
    149 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
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    151 m4_define([_AM_COND_VALUE_$1], [$2])dnl
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    164 
    165 # Copyright (C) 1999-2013 Free Software Foundation, Inc.
    166 #
    167 # This file is free software; the Free Software Foundation
    168 # gives unlimited permission to copy and/or distribute it,
    169 # with or without modifications, as long as this notice is preserved.
    170 
    171 
    172 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
    173 # written in clear, in which case automake, when reading aclocal.m4,
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    177 
    178 
    179 # _AM_DEPENDENCIES(NAME)
    180 # ----------------------
    181 # See how the compiler implements dependency checking.
    182 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
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    184 #
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    189 AC_DEFUN([_AM_DEPENDENCIES],
    190 [AC_REQUIRE([AM_SET_DEPDIR])dnl
    191 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
    192 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
    193 AC_REQUIRE([AM_DEP_TRACK])dnl
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    195 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
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    200       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
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    202 
    203 AC_CACHE_CHECK([dependency style of $depcc],
    204                [am_cv_$1_dependencies_compiler_type],
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    209   # making a dummy file named 'D' -- because '-MD' means "put the output
    210   # in D".
    211   rm -rf conftest.dir
    212   mkdir conftest.dir
    213   # Copy depcomp to subdir because otherwise we won't find it if we're
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    215   cp "$am_depcomp" conftest.dir
    216   cd conftest.dir
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    219   # both Tru64's cc and ICC support -MD to output dependencies as a
    220   # side effect of compilation, but ICC will put the dependencies in
    221   # the current directory while Tru64 will put them in the object
    222   # directory.
    223   mkdir sub
    224 
    225   am_cv_$1_dependencies_compiler_type=none
    226   if test "$am_compiler_list" = ""; then
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    229   am__universal=false
    230   m4_case([$1], [CC],
    231     [case " $depcc " in #(
    232      *\ -arch\ *\ -arch\ *) am__universal=true ;;
    233      esac],
    234     [CXX],
    235     [case " $depcc " in #(
    236      *\ -arch\ *\ -arch\ *) am__universal=true ;;
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    238 
    239   for depmode in $am_compiler_list; do
    240     # Setup a source with many dependencies, because some compilers
    241     # like to wrap large dependency lists on column 80 (with \), and
    242     # we should not choose a depcomp mode which is confused by this.
    243     #
    244     # We need to recreate these files for each test, as the compiler may
    245     # overwrite some of them when testing with obscure command lines.
    246     # This happens at least with the AIX C compiler.
    247     : > sub/conftest.c
    248     for i in 1 2 3 4 5 6; do
    249       echo '#include "conftst'$i'.h"' >> sub/conftest.c
    250       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
    251       # Solaris 10 /bin/sh.
    252       echo '/* dummy */' > sub/conftst$i.h
    253     done
    254     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
    255 
    256     # We check with '-c' and '-o' for the sake of the "dashmstdout"
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    258     # handle '-M -o', and we need to detect this.  Also, some Intel
    259     # versions had trouble with output in subdirs.
    260     am__obj=sub/conftest.${OBJEXT-o}
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    263     gcc)
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    266       ;;
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    269       # only be used when explicitly requested.
    270       if test "x$enable_dependency_tracking" = xyes; then
    271 	continue
    272       else
    273 	break
    274       fi
    275       ;;
    276     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
    277       # This compiler won't grok '-c -o', but also, the minuso test has
    278       # not run yet.  These depmodes are late enough in the game, and
    279       # so weak that their functioning should not be impacted.
    280       am__obj=conftest.${OBJEXT-o}
    281       am__minus_obj=
    282       ;;
    283     none) break ;;
    284     esac
    285     if depmode=$depmode \
    286        source=sub/conftest.c object=$am__obj \
    287        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
    288        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
    289          >/dev/null 2>conftest.err &&
    290        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
    291        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
    292        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
    293        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
    294       # icc doesn't choke on unknown options, it will just issue warnings
    295       # or remarks (even with -Werror).  So we grep stderr for any message
    296       # that says an option was ignored or not supported.
    297       # When given -MP, icc 7.0 and 7.1 complain thusly:
    298       #   icc: Command line warning: ignoring option '-M'; no argument required
    299       # The diagnosis changed in icc 8.0:
    300       #   icc: Command line remark: option '-MP' not supported
    301       if (grep 'ignoring option' conftest.err ||
    302           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
    303         am_cv_$1_dependencies_compiler_type=$depmode
    304         break
    305       fi
    306     fi
    307   done
    308 
    309   cd ..
    310   rm -rf conftest.dir
    311 else
    312   am_cv_$1_dependencies_compiler_type=none
    313 fi
    314 ])
    315 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
    316 AM_CONDITIONAL([am__fastdep$1], [
    317   test "x$enable_dependency_tracking" != xno \
    318   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
    319 ])
    320 
    321 
    322 # AM_SET_DEPDIR
    323 # -------------
    324 # Choose a directory name for dependency files.
    325 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
    326 AC_DEFUN([AM_SET_DEPDIR],
    327 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    328 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
    329 ])
    330 
    331 
    332 # AM_DEP_TRACK
    333 # ------------
    334 AC_DEFUN([AM_DEP_TRACK],
    335 [AC_ARG_ENABLE([dependency-tracking], [dnl
    336 AS_HELP_STRING(
    337   [--enable-dependency-tracking],
    338   [do not reject slow dependency extractors])
    339 AS_HELP_STRING(
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    344   AMDEPBACKSLASH='\'
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    347 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
    348 AC_SUBST([AMDEPBACKSLASH])dnl
    349 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
    350 AC_SUBST([am__nodep])dnl
    351 _AM_SUBST_NOTMAKE([am__nodep])dnl
    352 ])
    353 
    354 # Generate code to set up dependency tracking.              -*- Autoconf -*-
    355 
    356 # Copyright (C) 1999-2013 Free Software Foundation, Inc.
    357 #
    358 # This file is free software; the Free Software Foundation
    359 # gives unlimited permission to copy and/or distribute it,
    360 # with or without modifications, as long as this notice is preserved.
    361 
    362 
    363 # _AM_OUTPUT_DEPENDENCY_COMMANDS
    364 # ------------------------------
    365 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
    366 [{
    367   # Older Autoconf quotes --file arguments for eval, but not when files
    368   # are listed without --file.  Let's play safe and only enable the eval
    369   # if we detect the quoting.
    370   case $CONFIG_FILES in
    371   *\'*) eval set x "$CONFIG_FILES" ;;
    372   *)   set x $CONFIG_FILES ;;
    373   esac
    374   shift
    375   for mf
    376   do
    377     # Strip MF so we end up with the name of the file.
    378     mf=`echo "$mf" | sed -e 's/:.*$//'`
    379     # Check whether this is an Automake generated Makefile or not.
    380     # We used to match only the files named 'Makefile.in', but
    381     # some people rename them; so instead we look at the file content.
    382     # Grep'ing the first line is not enough: some people post-process
    383     # each Makefile.in and add a new line on top of each file to say so.
    384     # Grep'ing the whole file is not good either: AIX grep has a line
    385     # limit of 2048, but all sed's we know have understand at least 4000.
    386     if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
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    389       continue
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    391     # Extract the definition of DEPDIR, am__include, and am__quote
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    395     am__include=`sed -n 's/^am__include = //p' < "$mf"`
    396     test -z "$am__include" && continue
    397     am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
    398     # Find all dependency output files, they are included files with
    399     # $(DEPDIR) in their names.  We invoke sed twice because it is the
    400     # simplest approach to changing $(DEPDIR) to its actual value in the
    401     # expansion.
    402     for file in `sed -n "
    403       s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
    404 	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
    405       # Make sure the directory exists.
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    407       fdir=`AS_DIRNAME(["$file"])`
    408       AS_MKDIR_P([$dirpart/$fdir])
    409       # echo "creating $dirpart/$file"
    410       echo '# dummy' > "$dirpart/$file"
    411     done
    412   done
    413 }
    414 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
    415 
    416 
    417 # AM_OUTPUT_DEPENDENCY_COMMANDS
    418 # -----------------------------
    419 # This macro should only be invoked once -- use via AC_REQUIRE.
    420 #
    421 # This code is only required when automatic dependency tracking
    422 # is enabled.  FIXME.  This creates each '.P' file that we will
    423 # need in order to bootstrap the dependency handling code.
    424 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
    425 [AC_CONFIG_COMMANDS([depfiles],
    426      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
    427      [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
    428 ])
    429 
    430 # Do all the work for Automake.                             -*- Autoconf -*-
    431 
    432 # Copyright (C) 1996-2013 Free Software Foundation, Inc.
    433 #
    434 # This file is free software; the Free Software Foundation
    435 # gives unlimited permission to copy and/or distribute it,
    436 # with or without modifications, as long as this notice is preserved.
    437 
    438 # This macro actually does too much.  Some checks are only needed if
    439 # your package does certain things.  But this isn't really a big deal.
    440 
    441 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
    442 m4_define([AC_PROG_CC],
    443 m4_defn([AC_PROG_CC])
    444 [_AM_PROG_CC_C_O
    445 ])
    446 
    447 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
    448 # AM_INIT_AUTOMAKE([OPTIONS])
    449 # -----------------------------------------------
    450 # The call with PACKAGE and VERSION arguments is the old style
    451 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
    452 # and VERSION should now be passed to AC_INIT and removed from
    453 # the call to AM_INIT_AUTOMAKE.
    454 # We support both call styles for the transition.  After
    455 # the next Automake release, Autoconf can make the AC_INIT
    456 # arguments mandatory, and then we can depend on a new Autoconf
    457 # release and drop the old call support.
    458 AC_DEFUN([AM_INIT_AUTOMAKE],
    459 [AC_PREREQ([2.65])dnl
    460 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
    461 dnl the ones we care about.
    462 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
    463 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
    464 AC_REQUIRE([AC_PROG_INSTALL])dnl
    465 if test "`cd $srcdir && pwd`" != "`pwd`"; then
    466   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
    467   # is not polluted with repeated "-I."
    468   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
    469   # test to see if srcdir already configured
    470   if test -f $srcdir/config.status; then
    471     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
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    473 fi
    474 
    475 # test whether we have cygpath
    476 if test -z "$CYGPATH_W"; then
    477   if (cygpath --version) >/dev/null 2>/dev/null; then
    478     CYGPATH_W='cygpath -w'
    479   else
    480     CYGPATH_W=echo
    481   fi
    482 fi
    483 AC_SUBST([CYGPATH_W])
    484 
    485 # Define the identity of the package.
    486 dnl Distinguish between old-style and new-style calls.
    487 m4_ifval([$2],
    488 [AC_DIAGNOSE([obsolete],
    489              [$0: two- and three-arguments forms are deprecated.])
    490 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
    491  AC_SUBST([PACKAGE], [$1])dnl
    492  AC_SUBST([VERSION], [$2])],
    493 [_AM_SET_OPTIONS([$1])dnl
    494 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
    495 m4_if(
    496   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
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    498   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
    499  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
    500  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
    501 
    502 _AM_IF_OPTION([no-define],,
    503 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
    504  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
    505 
    506 # Some tools Automake needs.
    507 AC_REQUIRE([AM_SANITY_CHECK])dnl
    508 AC_REQUIRE([AC_ARG_PROGRAM])dnl
    509 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
    510 AM_MISSING_PROG([AUTOCONF], [autoconf])
    511 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
    512 AM_MISSING_PROG([AUTOHEADER], [autoheader])
    513 AM_MISSING_PROG([MAKEINFO], [makeinfo])
    514 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
    515 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
    516 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
    517 # For better backward compatibility.  To be removed once Automake 1.9.x
    518 # dies out for good.  For more background, see:
    519 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
    520 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
    521 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
    522 # We need awk for the "check" target.  The system "awk" is bad on
    523 # some platforms.
    524 AC_REQUIRE([AC_PROG_AWK])dnl
    525 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
    526 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    527 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
    528 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
    529 			     [_AM_PROG_TAR([v7])])])
    530 _AM_IF_OPTION([no-dependencies],,
    531 [AC_PROVIDE_IFELSE([AC_PROG_CC],
    532 		  [_AM_DEPENDENCIES([CC])],
    533 		  [m4_define([AC_PROG_CC],
    534 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
    535 AC_PROVIDE_IFELSE([AC_PROG_CXX],
    536 		  [_AM_DEPENDENCIES([CXX])],
    537 		  [m4_define([AC_PROG_CXX],
    538 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
    539 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
    540 		  [_AM_DEPENDENCIES([OBJC])],
    541 		  [m4_define([AC_PROG_OBJC],
    542 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
    543 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
    544 		  [_AM_DEPENDENCIES([OBJCXX])],
    545 		  [m4_define([AC_PROG_OBJCXX],
    546 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
    547 ])
    548 AC_REQUIRE([AM_SILENT_RULES])dnl
    549 dnl The testsuite driver may need to know about EXEEXT, so add the
    550 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
    551 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
    552 AC_CONFIG_COMMANDS_PRE(dnl
    553 [m4_provide_if([_AM_COMPILER_EXEEXT],
    554   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
    555 
    556 # POSIX will say in a future version that running "rm -f" with no argument
    557 # is OK; and we want to be able to make that assumption in our Makefile
    558 # recipes.  So use an aggressive probe to check that the usage we want is
    559 # actually supported "in the wild" to an acceptable degree.
    560 # See automake bug#10828.
    561 # To make any issue more visible, cause the running configure to be aborted
    562 # by default if the 'rm' program in use doesn't match our expectations; the
    563 # user can still override this though.
    564 if rm -f && rm -fr && rm -rf; then : OK; else
    565   cat >&2 <<'END'
    566 Oops!
    567 
    568 Your 'rm' program seems unable to run without file operands specified
    569 on the command line, even when the '-f' option is present.  This is contrary
    570 to the behaviour of most rm programs out there, and not conforming with
    571 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
    572 
    573 Please tell bug-automake (a] gnu.org about your system, including the value
    574 of your $PATH and any error possibly output before this message.  This
    575 can help us improve future automake versions.
    576 
    577 END
    578   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
    579     echo 'Configuration will proceed anyway, since you have set the' >&2
    580     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
    581     echo >&2
    582   else
    583     cat >&2 <<'END'
    584 Aborting the configuration process, to ensure you take notice of the issue.
    585 
    586 You can download and install GNU coreutils to get an 'rm' implementation
    587 that behaves properly: <http://www.gnu.org/software/coreutils/>.
    588 
    589 If you want to complete the configuration process using your problematic
    590 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
    591 to "yes", and re-run configure.
    592 
    593 END
    594     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
    595   fi
    596 fi])
    597 
    598 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
    599 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
    600 dnl mangled by Autoconf and run in a shell conditional statement.
    601 m4_define([_AC_COMPILER_EXEEXT],
    602 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
    603 
    604 # When config.status generates a header, we must update the stamp-h file.
    605 # This file resides in the same directory as the config header
    606 # that is generated.  The stamp files are numbered to have different names.
    607 
    608 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
    609 # loop where config.status creates the headers, so we can generate
    610 # our stamp files there.
    611 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
    612 [# Compute $1's index in $config_headers.
    613 _am_arg=$1
    614 _am_stamp_count=1
    615 for _am_header in $config_headers :; do
    616   case $_am_header in
    617     $_am_arg | $_am_arg:* )
    618       break ;;
    619     * )
    620       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
    621   esac
    622 done
    623 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
    624 
    625 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
    626 #
    627 # This file is free software; the Free Software Foundation
    628 # gives unlimited permission to copy and/or distribute it,
    629 # with or without modifications, as long as this notice is preserved.
    630 
    631 # AM_PROG_INSTALL_SH
    632 # ------------------
    633 # Define $install_sh.
    634 AC_DEFUN([AM_PROG_INSTALL_SH],
    635 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    636 if test x"${install_sh}" != xset; then
    637   case $am_aux_dir in
    638   *\ * | *\	*)
    639     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
    640   *)
    641     install_sh="\${SHELL} $am_aux_dir/install-sh"
    642   esac
    643 fi
    644 AC_SUBST([install_sh])])
    645 
    646 # Copyright (C) 2003-2013 Free Software Foundation, Inc.
    647 #
    648 # This file is free software; the Free Software Foundation
    649 # gives unlimited permission to copy and/or distribute it,
    650 # with or without modifications, as long as this notice is preserved.
    651 
    652 # Check whether the underlying file-system supports filenames
    653 # with a leading dot.  For instance MS-DOS doesn't.
    654 AC_DEFUN([AM_SET_LEADING_DOT],
    655 [rm -rf .tst 2>/dev/null
    656 mkdir .tst 2>/dev/null
    657 if test -d .tst; then
    658   am__leading_dot=.
    659 else
    660   am__leading_dot=_
    661 fi
    662 rmdir .tst 2>/dev/null
    663 AC_SUBST([am__leading_dot])])
    664 
    665 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
    666 # From Jim Meyering
    667 
    668 # Copyright (C) 1996-2013 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 
    674 # AM_MAINTAINER_MODE([DEFAULT-MODE])
    675 # ----------------------------------
    676 # Control maintainer-specific portions of Makefiles.
    677 # Default is to disable them, unless 'enable' is passed literally.
    678 # For symmetry, 'disable' may be passed as well.  Anyway, the user
    679 # can override the default with the --enable/--disable switch.
    680 AC_DEFUN([AM_MAINTAINER_MODE],
    681 [m4_case(m4_default([$1], [disable]),
    682        [enable], [m4_define([am_maintainer_other], [disable])],
    683        [disable], [m4_define([am_maintainer_other], [enable])],
    684        [m4_define([am_maintainer_other], [enable])
    685         m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
    686 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
    687   dnl maintainer-mode's default is 'disable' unless 'enable' is passed
    688   AC_ARG_ENABLE([maintainer-mode],
    689     [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
    690       am_maintainer_other[ make rules and dependencies not useful
    691       (and sometimes confusing) to the casual installer])],
    692     [USE_MAINTAINER_MODE=$enableval],
    693     [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
    694   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
    695   AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
    696   MAINT=$MAINTAINER_MODE_TRUE
    697   AC_SUBST([MAINT])dnl
    698 ]
    699 )
    700 
    701 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
    702 
    703 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
    704 #
    705 # This file is free software; the Free Software Foundation
    706 # gives unlimited permission to copy and/or distribute it,
    707 # with or without modifications, as long as this notice is preserved.
    708 
    709 # AM_MAKE_INCLUDE()
    710 # -----------------
    711 # Check to see how make treats includes.
    712 AC_DEFUN([AM_MAKE_INCLUDE],
    713 [am_make=${MAKE-make}
    714 cat > confinc << 'END'
    715 am__doit:
    716 	@echo this is the am__doit target
    717 .PHONY: am__doit
    718 END
    719 # If we don't find an include directive, just comment out the code.
    720 AC_MSG_CHECKING([for style of include used by $am_make])
    721 am__include="#"
    722 am__quote=
    723 _am_result=none
    724 # First try GNU make style include.
    725 echo "include confinc" > confmf
    726 # Ignore all kinds of additional output from 'make'.
    727 case `$am_make -s -f confmf 2> /dev/null` in #(
    728 *the\ am__doit\ target*)
    729   am__include=include
    730   am__quote=
    731   _am_result=GNU
    732   ;;
    733 esac
    734 # Now try BSD make style include.
    735 if test "$am__include" = "#"; then
    736    echo '.include "confinc"' > confmf
    737    case `$am_make -s -f confmf 2> /dev/null` in #(
    738    *the\ am__doit\ target*)
    739      am__include=.include
    740      am__quote="\""
    741      _am_result=BSD
    742      ;;
    743    esac
    744 fi
    745 AC_SUBST([am__include])
    746 AC_SUBST([am__quote])
    747 AC_MSG_RESULT([$_am_result])
    748 rm -f confinc confmf
    749 ])
    750 
    751 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
    752 
    753 # Copyright (C) 1997-2013 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 
    759 # AM_MISSING_PROG(NAME, PROGRAM)
    760 # ------------------------------
    761 AC_DEFUN([AM_MISSING_PROG],
    762 [AC_REQUIRE([AM_MISSING_HAS_RUN])
    763 $1=${$1-"${am_missing_run}$2"}
    764 AC_SUBST($1)])
    765 
    766 # AM_MISSING_HAS_RUN
    767 # ------------------
    768 # Define MISSING if not defined so far and test if it is modern enough.
    769 # If it is, set am_missing_run to use it, otherwise, to nothing.
    770 AC_DEFUN([AM_MISSING_HAS_RUN],
    771 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    772 AC_REQUIRE_AUX_FILE([missing])dnl
    773 if test x"${MISSING+set}" != xset; then
    774   case $am_aux_dir in
    775   *\ * | *\	*)
    776     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
    777   *)
    778     MISSING="\${SHELL} $am_aux_dir/missing" ;;
    779   esac
    780 fi
    781 # Use eval to expand $SHELL
    782 if eval "$MISSING --is-lightweight"; then
    783   am_missing_run="$MISSING "
    784 else
    785   am_missing_run=
    786   AC_MSG_WARN(['missing' script is too old or missing])
    787 fi
    788 ])
    789 
    790 #  -*- Autoconf -*-
    791 # Obsolete and "removed" macros, that must however still report explicit
    792 # error messages when used, to smooth transition.
    793 #
    794 # Copyright (C) 1996-2013 Free Software Foundation, Inc.
    795 #
    796 # This file is free software; the Free Software Foundation
    797 # gives unlimited permission to copy and/or distribute it,
    798 # with or without modifications, as long as this notice is preserved.
    799 
    800 AC_DEFUN([AM_CONFIG_HEADER],
    801 [AC_DIAGNOSE([obsolete],
    802 ['$0': this macro is obsolete.
    803 You should use the 'AC][_CONFIG_HEADERS' macro instead.])dnl
    804 AC_CONFIG_HEADERS($@)])
    805 
    806 AC_DEFUN([AM_PROG_CC_STDC],
    807 [AC_PROG_CC
    808 am_cv_prog_cc_stdc=$ac_cv_prog_cc_stdc
    809 AC_DIAGNOSE([obsolete],
    810 ['$0': this macro is obsolete.
    811 You should simply use the 'AC][_PROG_CC' macro instead.
    812 Also, your code should no longer depend upon 'am_cv_prog_cc_stdc',
    813 but upon 'ac_cv_prog_cc_stdc'.])])
    814 
    815 AC_DEFUN([AM_C_PROTOTYPES],
    816          [AC_FATAL([automatic de-ANSI-fication support has been removed])])
    817 AU_DEFUN([fp_C_PROTOTYPES], [AM_C_PROTOTYPES])
    818 
    819 # Helper functions for option handling.                     -*- Autoconf -*-
    820 
    821 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
    822 #
    823 # This file is free software; the Free Software Foundation
    824 # gives unlimited permission to copy and/or distribute it,
    825 # with or without modifications, as long as this notice is preserved.
    826 
    827 # _AM_MANGLE_OPTION(NAME)
    828 # -----------------------
    829 AC_DEFUN([_AM_MANGLE_OPTION],
    830 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
    831 
    832 # _AM_SET_OPTION(NAME)
    833 # --------------------
    834 # Set option NAME.  Presently that only means defining a flag for this option.
    835 AC_DEFUN([_AM_SET_OPTION],
    836 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
    837 
    838 # _AM_SET_OPTIONS(OPTIONS)
    839 # ------------------------
    840 # OPTIONS is a space-separated list of Automake options.
    841 AC_DEFUN([_AM_SET_OPTIONS],
    842 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
    843 
    844 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
    845 # -------------------------------------------
    846 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
    847 AC_DEFUN([_AM_IF_OPTION],
    848 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
    849 
    850 # Copyright (C) 1999-2013 Free Software Foundation, Inc.
    851 #
    852 # This file is free software; the Free Software Foundation
    853 # gives unlimited permission to copy and/or distribute it,
    854 # with or without modifications, as long as this notice is preserved.
    855 
    856 # _AM_PROG_CC_C_O
    857 # ---------------
    858 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
    859 # to automatically call this.
    860 AC_DEFUN([_AM_PROG_CC_C_O],
    861 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    862 AC_REQUIRE_AUX_FILE([compile])dnl
    863 AC_LANG_PUSH([C])dnl
    864 AC_CACHE_CHECK(
    865   [whether $CC understands -c and -o together],
    866   [am_cv_prog_cc_c_o],
    867   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
    868   # Make sure it works both with $CC and with simple cc.
    869   # Following AC_PROG_CC_C_O, we do the test twice because some
    870   # compilers refuse to overwrite an existing .o file with -o,
    871   # though they will create one.
    872   am_cv_prog_cc_c_o=yes
    873   for am_i in 1 2; do
    874     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
    875          && test -f conftest2.$ac_objext; then
    876       : OK
    877     else
    878       am_cv_prog_cc_c_o=no
    879       break
    880     fi
    881   done
    882   rm -f core conftest*
    883   unset am_i])
    884 if test "$am_cv_prog_cc_c_o" != yes; then
    885    # Losing compiler, so override with the script.
    886    # FIXME: It is wrong to rewrite CC.
    887    # But if we don't then we get into trouble of one sort or another.
    888    # A longer-term fix would be to have automake use am__CC in this case,
    889    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
    890    CC="$am_aux_dir/compile $CC"
    891 fi
    892 AC_LANG_POP([C])])
    893 
    894 # For backward compatibility.
    895 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
    896 
    897 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
    898 #
    899 # This file is free software; the Free Software Foundation
    900 # gives unlimited permission to copy and/or distribute it,
    901 # with or without modifications, as long as this notice is preserved.
    902 
    903 # AM_RUN_LOG(COMMAND)
    904 # -------------------
    905 # Run COMMAND, save the exit status in ac_status, and log it.
    906 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
    907 AC_DEFUN([AM_RUN_LOG],
    908 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
    909    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
    910    ac_status=$?
    911    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
    912    (exit $ac_status); }])
    913 
    914 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
    915 
    916 # Copyright (C) 1996-2013 Free Software Foundation, Inc.
    917 #
    918 # This file is free software; the Free Software Foundation
    919 # gives unlimited permission to copy and/or distribute it,
    920 # with or without modifications, as long as this notice is preserved.
    921 
    922 # AM_SANITY_CHECK
    923 # ---------------
    924 AC_DEFUN([AM_SANITY_CHECK],
    925 [AC_MSG_CHECKING([whether build environment is sane])
    926 # Reject unsafe characters in $srcdir or the absolute working directory
    927 # name.  Accept space and tab only in the latter.
    928 am_lf='
    929 '
    930 case `pwd` in
    931   *[[\\\"\#\$\&\'\`$am_lf]]*)
    932     AC_MSG_ERROR([unsafe absolute working directory name]);;
    933 esac
    934 case $srcdir in
    935   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
    936     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
    937 esac
    938 
    939 # Do 'set' in a subshell so we don't clobber the current shell's
    940 # arguments.  Must try -L first in case configure is actually a
    941 # symlink; some systems play weird games with the mod time of symlinks
    942 # (eg FreeBSD returns the mod time of the symlink's containing
    943 # directory).
    944 if (
    945    am_has_slept=no
    946    for am_try in 1 2; do
    947      echo "timestamp, slept: $am_has_slept" > conftest.file
    948      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
    949      if test "$[*]" = "X"; then
    950 	# -L didn't work.
    951 	set X `ls -t "$srcdir/configure" conftest.file`
    952      fi
    953      if test "$[*]" != "X $srcdir/configure conftest.file" \
    954 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
    955 
    956 	# If neither matched, then we have a broken ls.  This can happen
    957 	# if, for instance, CONFIG_SHELL is bash and it inherits a
    958 	# broken ls alias from the environment.  This has actually
    959 	# happened.  Such a system could not be considered "sane".
    960 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
    961   alias in your environment])
    962      fi
    963      if test "$[2]" = conftest.file || test $am_try -eq 2; then
    964        break
    965      fi
    966      # Just in case.
    967      sleep 1
    968      am_has_slept=yes
    969    done
    970    test "$[2]" = conftest.file
    971    )
    972 then
    973    # Ok.
    974    :
    975 else
    976    AC_MSG_ERROR([newly created file is older than distributed files!
    977 Check your system clock])
    978 fi
    979 AC_MSG_RESULT([yes])
    980 # If we didn't sleep, we still need to ensure time stamps of config.status and
    981 # generated files are strictly newer.
    982 am_sleep_pid=
    983 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
    984   ( sleep 1 ) &
    985   am_sleep_pid=$!
    986 fi
    987 AC_CONFIG_COMMANDS_PRE(
    988   [AC_MSG_CHECKING([that generated files are newer than configure])
    989    if test -n "$am_sleep_pid"; then
    990      # Hide warnings about reused PIDs.
    991      wait $am_sleep_pid 2>/dev/null
    992    fi
    993    AC_MSG_RESULT([done])])
    994 rm -f conftest.file
    995 ])
    996 
    997 # Copyright (C) 2009-2013 Free Software Foundation, Inc.
    998 #
    999 # This file is free software; the Free Software Foundation
   1000 # gives unlimited permission to copy and/or distribute it,
   1001 # with or without modifications, as long as this notice is preserved.
   1002 
   1003 # AM_SILENT_RULES([DEFAULT])
   1004 # --------------------------
   1005 # Enable less verbose build rules; with the default set to DEFAULT
   1006 # ("yes" being less verbose, "no" or empty being verbose).
   1007 AC_DEFUN([AM_SILENT_RULES],
   1008 [AC_ARG_ENABLE([silent-rules], [dnl
   1009 AS_HELP_STRING(
   1010   [--enable-silent-rules],
   1011   [less verbose build output (undo: "make V=1")])
   1012 AS_HELP_STRING(
   1013   [--disable-silent-rules],
   1014   [verbose build output (undo: "make V=0")])dnl
   1015 ])
   1016 case $enable_silent_rules in @%:@ (((
   1017   yes) AM_DEFAULT_VERBOSITY=0;;
   1018    no) AM_DEFAULT_VERBOSITY=1;;
   1019     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
   1020 esac
   1021 dnl
   1022 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
   1023 dnl do not support nested variable expansions.
   1024 dnl See automake bug#9928 and bug#10237.
   1025 am_make=${MAKE-make}
   1026 AC_CACHE_CHECK([whether $am_make supports nested variables],
   1027    [am_cv_make_support_nested_variables],
   1028    [if AS_ECHO([['TRUE=$(BAR$(V))
   1029 BAR0=false
   1030 BAR1=true
   1031 V=1
   1032 am__doit:
   1033 	@$(TRUE)
   1034 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
   1035   am_cv_make_support_nested_variables=yes
   1036 else
   1037   am_cv_make_support_nested_variables=no
   1038 fi])
   1039 if test $am_cv_make_support_nested_variables = yes; then
   1040   dnl Using '$V' instead of '$(V)' breaks IRIX make.
   1041   AM_V='$(V)'
   1042   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
   1043 else
   1044   AM_V=$AM_DEFAULT_VERBOSITY
   1045   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
   1046 fi
   1047 AC_SUBST([AM_V])dnl
   1048 AM_SUBST_NOTMAKE([AM_V])dnl
   1049 AC_SUBST([AM_DEFAULT_V])dnl
   1050 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
   1051 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
   1052 AM_BACKSLASH='\'
   1053 AC_SUBST([AM_BACKSLASH])dnl
   1054 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
   1055 ])
   1056 
   1057 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
   1058 #
   1059 # This file is free software; the Free Software Foundation
   1060 # gives unlimited permission to copy and/or distribute it,
   1061 # with or without modifications, as long as this notice is preserved.
   1062 
   1063 # AM_PROG_INSTALL_STRIP
   1064 # ---------------------
   1065 # One issue with vendor 'install' (even GNU) is that you can't
   1066 # specify the program used to strip binaries.  This is especially
   1067 # annoying in cross-compiling environments, where the build's strip
   1068 # is unlikely to handle the host's binaries.
   1069 # Fortunately install-sh will honor a STRIPPROG variable, so we
   1070 # always use install-sh in "make install-strip", and initialize
   1071 # STRIPPROG with the value of the STRIP variable (set by the user).
   1072 AC_DEFUN([AM_PROG_INSTALL_STRIP],
   1073 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
   1074 # Installed binaries are usually stripped using 'strip' when the user
   1075 # run "make install-strip".  However 'strip' might not be the right
   1076 # tool to use in cross-compilation environments, therefore Automake
   1077 # will honor the 'STRIP' environment variable to overrule this program.
   1078 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
   1079 if test "$cross_compiling" != no; then
   1080   AC_CHECK_TOOL([STRIP], [strip], :)
   1081 fi
   1082 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
   1083 AC_SUBST([INSTALL_STRIP_PROGRAM])])
   1084 
   1085 # Copyright (C) 2006-2013 Free Software Foundation, Inc.
   1086 #
   1087 # This file is free software; the Free Software Foundation
   1088 # gives unlimited permission to copy and/or distribute it,
   1089 # with or without modifications, as long as this notice is preserved.
   1090 
   1091 # _AM_SUBST_NOTMAKE(VARIABLE)
   1092 # ---------------------------
   1093 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
   1094 # This macro is traced by Automake.
   1095 AC_DEFUN([_AM_SUBST_NOTMAKE])
   1096 
   1097 # AM_SUBST_NOTMAKE(VARIABLE)
   1098 # --------------------------
   1099 # Public sister of _AM_SUBST_NOTMAKE.
   1100 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
   1101 
   1102 # Check how to create a tarball.                            -*- Autoconf -*-
   1103 
   1104 # Copyright (C) 2004-2013 Free Software Foundation, Inc.
   1105 #
   1106 # This file is free software; the Free Software Foundation
   1107 # gives unlimited permission to copy and/or distribute it,
   1108 # with or without modifications, as long as this notice is preserved.
   1109 
   1110 # _AM_PROG_TAR(FORMAT)
   1111 # --------------------
   1112 # Check how to create a tarball in format FORMAT.
   1113 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
   1114 #
   1115 # Substitute a variable $(am__tar) that is a command
   1116 # writing to stdout a FORMAT-tarball containing the directory
   1117 # $tardir.
   1118 #     tardir=directory && $(am__tar) > result.tar
   1119 #
   1120 # Substitute a variable $(am__untar) that extract such
   1121 # a tarball read from stdin.
   1122 #     $(am__untar) < result.tar
   1123 #
   1124 AC_DEFUN([_AM_PROG_TAR],
   1125 [# Always define AMTAR for backward compatibility.  Yes, it's still used
   1126 # in the wild :-(  We should find a proper way to deprecate it ...
   1127 AC_SUBST([AMTAR], ['$${TAR-tar}'])
   1128 
   1129 # We'll loop over all known methods to create a tar archive until one works.
   1130 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
   1131 
   1132 m4_if([$1], [v7],
   1133   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
   1134 
   1135   [m4_case([$1],
   1136     [ustar],
   1137      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
   1138       # There is notably a 21 bits limit for the UID and the GID.  In fact,
   1139       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
   1140       # and bug#13588).
   1141       am_max_uid=2097151 # 2^21 - 1
   1142       am_max_gid=$am_max_uid
   1143       # The $UID and $GID variables are not portable, so we need to resort
   1144       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
   1145       # below are definitely unexpected, so allow the users to see them
   1146       # (that is, avoid stderr redirection).
   1147       am_uid=`id -u || echo unknown`
   1148       am_gid=`id -g || echo unknown`
   1149       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
   1150       if test $am_uid -le $am_max_uid; then
   1151          AC_MSG_RESULT([yes])
   1152       else
   1153          AC_MSG_RESULT([no])
   1154          _am_tools=none
   1155       fi
   1156       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
   1157       if test $am_gid -le $am_max_gid; then
   1158          AC_MSG_RESULT([yes])
   1159       else
   1160         AC_MSG_RESULT([no])
   1161         _am_tools=none
   1162       fi],
   1163 
   1164   [pax],
   1165     [],
   1166 
   1167   [m4_fatal([Unknown tar format])])
   1168 
   1169   AC_MSG_CHECKING([how to create a $1 tar archive])
   1170 
   1171   # Go ahead even if we have the value already cached.  We do so because we
   1172   # need to set the values for the 'am__tar' and 'am__untar' variables.
   1173   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
   1174 
   1175   for _am_tool in $_am_tools; do
   1176     case $_am_tool in
   1177     gnutar)
   1178       for _am_tar in tar gnutar gtar; do
   1179         AM_RUN_LOG([$_am_tar --version]) && break
   1180       done
   1181       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
   1182       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
   1183       am__untar="$_am_tar -xf -"
   1184       ;;
   1185     plaintar)
   1186       # Must skip GNU tar: if it does not support --format= it doesn't create
   1187       # ustar tarball either.
   1188       (tar --version) >/dev/null 2>&1 && continue
   1189       am__tar='tar chf - "$$tardir"'
   1190       am__tar_='tar chf - "$tardir"'
   1191       am__untar='tar xf -'
   1192       ;;
   1193     pax)
   1194       am__tar='pax -L -x $1 -w "$$tardir"'
   1195       am__tar_='pax -L -x $1 -w "$tardir"'
   1196       am__untar='pax -r'
   1197       ;;
   1198     cpio)
   1199       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
   1200       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
   1201       am__untar='cpio -i -H $1 -d'
   1202       ;;
   1203     none)
   1204       am__tar=false
   1205       am__tar_=false
   1206       am__untar=false
   1207       ;;
   1208     esac
   1209 
   1210     # If the value was cached, stop now.  We just wanted to have am__tar
   1211     # and am__untar set.
   1212     test -n "${am_cv_prog_tar_$1}" && break
   1213 
   1214     # tar/untar a dummy directory, and stop if the command works.
   1215     rm -rf conftest.dir
   1216     mkdir conftest.dir
   1217     echo GrepMe > conftest.dir/file
   1218     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
   1219     rm -rf conftest.dir
   1220     if test -s conftest.tar; then
   1221       AM_RUN_LOG([$am__untar <conftest.tar])
   1222       AM_RUN_LOG([cat conftest.dir/file])
   1223       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
   1224     fi
   1225   done
   1226   rm -rf conftest.dir
   1227 
   1228   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
   1229   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
   1230 
   1231 AC_SUBST([am__tar])
   1232 AC_SUBST([am__untar])
   1233 ]) # _AM_PROG_TAR
   1234 
   1235