From: David MacKenzie <djm@djmnet.org>
Date: Wed, 20 Oct 1993 23:33:19 +0000 (+0000)
Subject: Initial revision
X-Git-Tag: fsf-origin~840
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b279c0e989201ae3b71a9463f497e814ae7ac9c4;p=thirdparty%2Fautoconf.git

Initial revision
---

diff --git a/acgeneral.m4 b/acgeneral.m4
new file mode 100644
index 000000000..4b6793bc4
--- /dev/null
+++ b/acgeneral.m4
@@ -0,0 +1,841 @@
+dnl Parameterized macros that do not check for something specific.
+dnl This file is part of Autoconf.
+dnl Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2, or (at your option)
+dnl any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+dnl
+dnl Written by David MacKenzie, with help from
+dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
+dnl Roland McGrath, and Noah Friedman.
+dnl
+changequote([,])dnl
+undefine([eval])dnl
+undefine([include])dnl
+undefine([shift])dnl
+undefine([format])dnl
+dnl
+ifdef([__gnu__], , [errprint(Autoconf requires GNU m4
+)exit(1)])dnl
+dnl
+dnl
+dnl Utility functions for stamping the configure script.
+dnl
+dnl
+define(AC_ACVERSION, 1.6.1)dnl
+dnl This is defined by the --version option of the autoconf script.
+ifdef([AC_PRINT_VERSION], [errprint(Autoconf version AC_ACVERSION
+)])dnl
+dnl
+dnl These are currently not used, for the sake of people who diff
+dnl configure scripts and don't want spurious differences.
+dnl But they are too clever to just delete.
+dnl
+define(AC_USER, [esyscmd(
+changequote({,})dnl
+# Extract the user name from the first pair of parentheses.
+({sedcmd='s/[^(]*(\([^)]*\)).*/\1/';}
+changequote([,])dnl
+whoami || id|sed "$sedcmd") 2>/dev/null|tr -d '\012')])dnl
+dnl
+define(AC_HOST, [esyscmd((hostname || uname -n) 2>/dev/null|tr -d '\012')])dnl
+dnl
+define(AC_DATE, [esyscmd(date|tr -d '\012')])dnl
+dnl
+dnl
+dnl Controlling Autoconf operation
+dnl
+dnl
+dnl This is separate from AC_INIT to prevent GNU m4 1.0 from coredumping
+dnl when AC_CONFIG_HEADER is used.
+define(AC_NOTICE,
+[# Guess values for system-dependent variables and create Makefiles.
+# Generated automatically using autoconf.
+dnl [#] Generated automatically using autoconf version AC_ACVERSION
+dnl [#] by AC_USER@AC_HOST on AC_DATE
+# Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Usage: configure [--srcdir=DIR] [--host=HOST] [--gas] [--nfp]
+#        [--prefix=PREFIX] [--exec-prefix=PREFIX] [--with-PACKAGE[=VALUE]]
+# Ignores all args except --srcdir, --prefix, --exec-prefix, and
+# --with-PACKAGE[=VALUE] unless this script has special code to handle it.
+])dnl
+dnl
+define(AC_PARSEARGS,
+[for arg
+do
+  # Handle --exec-prefix with a space before the argument.
+  if test x$next_exec_prefix = xyes; then exec_prefix=$arg; next_exec_prefix=
+  # Handle --host with a space before the argument.
+  elif test x$next_host = xyes; then next_host=
+  # Handle --prefix with a space before the argument.
+  elif test x$next_prefix = xyes; then prefix=$arg; next_prefix=
+  # Handle --srcdir with a space before the argument.
+  elif test x$next_srcdir = xyes; then srcdir=$arg; next_srcdir=
+  else
+    case $arg in
+     # For backward compatibility, recognize -exec-prefix and --exec_prefix.
+     -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* | --exec=* | --exe=* | --ex=* | --e=*)
+changequote(,)dnl
+	exec_prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
+changequote([,])dnl
+     -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- | --exec | --exe | --ex | --e)
+	next_exec_prefix=yes ;;
+
+     -gas | --gas | --ga | --g) ;;
+
+     -host=* | --host=* | --hos=* | --ho=* | --h=*) ;;
+     -host | --host | --hos | --ho | --h)
+	next_host=yes ;;
+
+     -nfp | --nfp | --nf) ;;
+
+     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+changequote(,)dnl
+	prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
+changequote([,])dnl
+     -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+	next_prefix=yes ;;
+
+     -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=* | --s=*)
+changequote(,)dnl
+	srcdir=`echo $arg | sed 's/[-a-z_]*=//'` ;;
+changequote([,])dnl
+     -srcdir | --srcdir | --srcdi | --srcd | --src | --sr | --s)
+	next_srcdir=yes ;;
+
+     -with-* | --with-*)
+       package=`echo $arg|sed -e 's/-*with-//' -e 's/=.*//'`
+       # Reject names that aren't valid shell variable names.
+changequote(,)dnl
+       if test -n "`echo $package| sed 's/[-a-zA-Z0-9_]//g'`"; then
+changequote([,])dnl
+         echo "configure: $package: invalid package name" >&2; exit 1
+       fi
+       package=`echo $package| sed 's/-/_/g'`
+       case "$arg" in
+changequote(,)dnl
+         *=*) val="`echo $arg|sed 's/[^=]*=//'`" ;;
+changequote([,])dnl
+         *) val=1 ;;
+       esac
+       eval "with_$package='$val'" ;;
+
+     -v | -verbose | --verbose | --verbos | --verbo | --verb | --ver | --ve | --v)
+       verbose=yes ;;
+
+     *) ;;
+    esac
+  fi
+done
+])dnl
+dnl
+define(AC_INIT,
+[#!/bin/sh
+AC_NOTICE
+AC_PARSEARGS
+AC_PREPARE($1)])dnl
+dnl
+define(AC_PREPARE,
+[trap 'rm -fr conftest* confdefs* core; exit 1' 1 3 15
+trap 'rm -f confdefs*' 0
+
+# NLS nuisances.
+# These must not be set unconditionally because not all systems understand
+# e.g. LANG=C (notably SCO).
+if test "${LC_ALL+set}" = 'set' ; then LC_ALL=C; export LC_ALL; fi
+if test "${LANG+set}"   = 'set' ; then LANG=C;   export LANG;   fi
+
+rm -f conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo > confdefs.h
+compile='${CC-cc} $CFLAGS conftest.c -o conftest $LIBS >/dev/null 2>&1'
+
+# A filename unique to this package, relative to the directory that
+# configure is in, which we can look for to find out if srcdir is correct.
+unique_file=$1
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  srcdirdefaulted=yes
+  # Try the directory containing this script, then `..'.
+  prog=[$]0
+changequote(,)dnl
+  confdir=`echo $prog|sed 's%/[^/][^/]*$%%'`
+changequote([,])dnl
+  test "X$confdir" = "X$prog" && confdir=.
+  srcdir=$confdir
+  if test ! -r $srcdir/$unique_file; then
+    srcdir=..
+  fi
+fi
+if test ! -r $srcdir/$unique_file; then
+  if test x$srcdirdefaulted = xyes; then
+    echo "configure: Can not find sources in \`${confdir}' or \`..'." 1>&2
+  else
+    echo "configure: Can not find sources in \`${srcdir}'." 1>&2
+  fi
+  exit 1
+fi
+# Preserve a srcdir of `.' to avoid automounter screwups with pwd.
+# But we can't avoid them for `..', to make subdirectories work.
+case $srcdir in
+  .|/*|~*) ;;
+  *) srcdir=`cd $srcdir; pwd` ;; # Make relative path absolute.
+esac
+
+dnl This is effectively disabled because it is a nuisance if not using
+dnl a configuration header file.
+ifelse([AC_CONFIG_NAMES], [], [
+# Check for an already configured srcdir.
+if test -r $srcdir/config.status && \
+  test z"`sh -c pwd`" != z"`(cd $srcdir; sh -c pwd)`"; then
+  cat <<EOF >&2
+configure: The directory tree \`${srcdir}' is being used
+   as a build directory right now; it has been configured in its own
+   right.  You cannot currently configure and build in both the source
+   directory and another build directory.  To configure in this directory,
+   you must first do \`make distclean' in ${srcdir},
+   and then run configure again.
+EOF
+  exit 1
+ifelse([not ready yet], [], [ XXX this should do the following:
+* Edit "VPATH=..." into GNU vpath directives for %.c and %.h (%.y?).
+* Add -DCONFIG_BROKETS to DEFS (config.h is not good enough, because it is
+  used to FIND config.h).
+cat <<EOF >&2
+configure: WARNING: The directory tree \`${srcdir}' is being used
+   as a build directory right now; it has been configured in its own
+   right.  To configure in another directory as well, you MUST
+   use GNU make.  If you do not have GNU make, then you must
+   now do \`make distclean' in ${srcdir},
+   and then run ${progname} again.
+EOF])dnl
+fi])dnl
+
+# Save the original args to write them into config.status later.
+configure_args="[$]*"
+])dnl
+dnl
+dnl Protects the argument from being diverted twice
+dnl if this macro is called twice for it.
+dnl Diversion 0 is the normal output.
+dnl Diversion 1 is sed substitutions for output files.
+dnl Diversion 2 is variable assignments for config.status.
+define(AC_SUBST,
+[ifdef([AC_SUBST_$1], ,
+[define([AC_SUBST_$1], )dnl
+divert(1)dnl
+s%@$1@%[$]$1%g
+divert(2)dnl
+$1='[$]$1'
+divert(0)dnl
+])])dnl
+dnl
+define(AC_WITH,
+[[#] check whether --with-$1 was given
+withval="[$with_]patsubst($1,-,_)"
+if test -n "$withval"; then
+  ifelse([$2], , :, [$2])
+ifelse([$3], , , [else
+  $3
+])dnl
+fi
+])dnl
+dnl
+dnl Guess the value for the `prefix' variable by looking for
+dnl the argument program along PATH and taking its parent.
+dnl Example: if the argument is `gcc' and we find /usr/local/gnu/bin/gcc,
+dnl set `prefix' to /usr/local/gnu.
+define(AC_PREFIX,
+[if test -z "$prefix"
+then
+  echo checking for $1 to derive installation directory prefix
+  IFS="${IFS= 	}"; saveifs="$IFS"; IFS="$IFS:"
+  for dir in $PATH; do
+    test -z "$dir" && dir=.
+    if test $dir != . && test -f $dir/$1; then
+changequote(,)dnl
+      # Not all systems have dirname.
+      prefix=`echo $dir|sed 's%/[^/][^/]*$%%'`
+changequote([,])dnl
+      break
+    fi
+  done
+  IFS="$saveifs"
+  echo "	chose installation directory prefix ${prefix}"
+fi
+])dnl
+dnl
+define(AC_CONFIG_HEADER, [define(AC_CONFIG_NAMES, $1)])dnl
+dnl
+define(AC_DOREV, [#!/bin/sh
+# From configure.in $1
+])dnl
+define(AC_REVISION, [AC_DOREV(translit($1,$"))])dnl
+dnl
+dnl
+dnl Several simple subroutines to do various flavors of quoting.
+dnl
+dnl Quote $1 against shell "s.
+define(AC_QUOTE_DQUOTE, [dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
+patsubst($1, changequote(,)\([$"`\\]\)changequote([,]), \\\1)])dnl
+dnl
+dnl Quote $1 against shell 's.
+define(AC_QUOTE_SQUOTE, [patsubst($1, ', '\\'')])dnl
+dnl
+dnl Quote $1 against shell here documents (<<EOF).
+define(AC_QUOTE_HERE, [changequote({,})dnl
+dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
+patsubst(patsubst($1, \(\\[$`\\]\), \\\1), \([$`]\), \\\1){}dnl
+changequote([,])])dnl
+dnl
+dnl Quote $1 against the right hand side of a sed substitution.
+define(AC_QUOTE_SED, [changequote({,})dnl
+dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
+dnl % and @ are commonly used as the sed s separator character.
+patsubst($1, \([&\\%@]\), \\\1){}dnl
+changequote([,])])dnl
+dnl
+dnl Quote $1 against tokenization.
+define(AC_QUOTE_TOKEN, [changequote({,})dnl
+patsubst($1, \([	 ]\), \\\1){}dnl
+changequote([,])])dnl
+dnl
+dnl Subroutines of AC_DEFINE.  Does more quoting magic than any sane person
+dnl should be able to understand.  The point of it all is that what goes into
+dnl Makefile et al should be verbatim what was written in configure.in.
+define(AC_DEFINE_QUOTE, [dnl
+AC_QUOTE_TOKEN(AC_QUOTE_SQUOTE(AC_QUOTE_DQUOTE($1)))])dnl
+dnl
+define(AC_DEFINE_SEDQUOTE, [dnl
+AC_QUOTE_DQUOTE(AC_QUOTE_HERE(AC_QUOTE_HERE(AC_QUOTE_SED($1))))])dnl
+dnl
+dnl Don't compare $2 to a blank, so we can support "-Dfoo=".
+dnl If creating a configuration header file, we add
+dnl commands to SEDDEFS to define the variable.  SED[due][ABCD]
+dnl get defined in config.status.  Here we just insert the
+dnl variable parts of the string: the variable name to define
+dnl and the value to give it.
+dnl The newlines around the curly braces prevent sh syntax errors.
+define(AC_DEFINE,[
+{
+dnl Uniformly use AC_DEFINE_[SED]QUOTE, so callers of AC_DEFINE_UNQUOTED
+dnl can use AC_QUOTE_* manually if they want to.
+test -n "$verbose" && \
+ifelse($#, 2,
+[define([AC_VAL], $2)dnl
+echo "	defining" $1 to be ifelse(AC_VAL,, empty, AC_DEFINE_QUOTE(AC_VAL))],
+[define([AC_VAL], 1)dnl
+echo "	defining $1"])
+dnl
+echo "[#][define]" $1 AC_DEFINE_QUOTE(AC_VAL) >> confdefs.h
+dnl Define DEFS even if AC_CONFIG_NAMES for use in user case statements.
+DEFS="$DEFS -D$1=AC_DEFINE_QUOTE(AC_VAL)"
+ifdef([AC_CONFIG_NAMES],
+SEDDEFS="dnl
+${SEDDEFS}\${SEDdA}$1\${SEDdB}$1\${SEDdC}AC_DEFINE_SEDQUOTE(AC_VAL)\${SEDdD}
+\${SEDuA}$1\${SEDuB}$1\${SEDuC}AC_DEFINE_SEDQUOTE(AC_VAL)\${SEDuD}
+\${SEDeA}$1\${SEDeB}$1\${SEDeC}AC_DEFINE_SEDQUOTE(AC_VAL)\${SEDeD}
+"
+)dnl
+}
+])dnl
+dnl
+dnl Unsafe version of AC_DEFINE.
+dnl Users are responsible for the quoting nightmare.
+dnl Well, not all of it.  We need to pull the identify function out to
+dnl the top level, because m4 doesn't really support nested functions;
+dnl it doesn't distinguish between the arguments to the outer
+dnl function, which should be expanded, and the arguments to the inner
+dnl function, which shouldn't yet.
+define(AC_IDENTITY,$1)dnl
+define(AC_DEFINE_UNQUOTED,[dnl
+pushdef([AC_DEFINE_QUOTE],defn([AC_IDENTITY]))dnl
+pushdef([AC_DEFINE_SEDQUOTE],defn([AC_IDENTITY]))dnl
+AC_DEFINE($1,$2)dnl
+popdef([AC_DEFINE_SEDQUOTE])dnl
+popdef([AC_DEFINE_QUOTE])dnl
+])dnl
+dnl
+define(AC_BEFORE,
+[ifdef([AC_PROVIDE_$2], [errprint(__file__:__line__: [$2 was called before $1
+])])])dnl
+dnl
+define(AC_REQUIRE,
+[ifdef([AC_PROVIDE_$1],,[indir([$1])
+])])dnl
+dnl
+define(AC_PROVIDE,
+[define([AC_PROVIDE_$1],)])dnl
+dnl
+define(AC_OBSOLETE,
+[errprint(__file__:__line__: warning: [$1] is obsolete[$2]
+)])dnl
+dnl
+dnl
+dnl Checks for kinds of features
+dnl
+dnl
+define(AC_PROGRAM_CHECK,
+[if test -z "[$]$1"; then
+  # Extract the first word of `$2', so it can be a program name with args.
+  set dummy $2; word=[$]2
+  echo checking for $word
+  IFS="${IFS= 	}"; saveifs="$IFS"; IFS="${IFS}:"
+  for dir in $PATH; do
+    test -z "$dir" && dir=.
+    if test -f $dir/$word; then
+      $1="$3"
+      break
+    fi
+  done
+  IFS="$saveifs"
+fi
+ifelse([$4],,, [test -z "[$]$1" && $1="$4"])
+test -n "[$]$1" && test -n "$verbose" && echo "	setting $1 to [$]$1"
+AC_SUBST($1)dnl
+])dnl
+dnl
+define(AC_PROGRAMS_CHECK,
+[for p in $2
+do
+AC_PROGRAM_CHECK($1, [$]p, [$]p, )
+test -n "[$]$1" && break
+done
+ifelse([$3],,, [test -n "[$]$1" || $1="$3"
+])])dnl
+dnl
+define(AC_HEADER_EGREP,
+[AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])echo '#include "confdefs.h"
+#include <$2>' > conftest.c
+eval "$CPP conftest.c > conftest.out 2>&1"
+if egrep "$1" conftest.out >/dev/null 2>&1; then
+  ifelse([$3], , :, [rm -rf conftest*
+  $3
+])
+ifelse([$4], , , [else
+  rm -rf conftest*
+  $4
+])dnl
+fi
+rm -f conftest*
+])dnl
+dnl
+dnl Because this macro is used by AC_GCC_TRADITIONAL, which must come early,
+dnl it is not included in AC_BEFORE checks.
+define(AC_PROGRAM_EGREP,
+[AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])cat > conftest.c <<EOF
+#include "confdefs.h"
+[$2]
+EOF
+eval "$CPP conftest.c > conftest.out 2>&1"
+if egrep "$1" conftest.out >/dev/null 2>&1; then
+  ifelse([$3], , :, [rm -rf conftest*
+  $3
+])
+ifelse([$4], , , [else
+  rm -rf conftest*
+  $4
+])dnl
+fi
+rm -f conftest*
+])dnl
+dnl
+define(AC_HEADER_CHECK,
+[echo checking for $1
+ifelse([$3], , [AC_TEST_CPP([#include <$1>], [$2])],
+[AC_TEST_CPP([#include <$1>], [$2], [$3])])
+])dnl
+dnl
+define(AC_COMPILE_CHECK,
+[AC_PROVIDE([$0])dnl
+ifelse([$1], , , [echo checking for $1]
+)dnl
+cat > conftest.c <<EOF
+#include "confdefs.h"
+[$2]
+int main() { exit(0); }
+int t() { [$3] }
+EOF
+dnl Don't try to run the program, which would prevent cross-configuring.
+if eval $compile; then
+  ifelse([$4], , :, [rm -rf conftest*
+  $4
+])
+ifelse([$5], , , [else
+  rm -rf conftest*
+  $5
+])dnl
+fi
+rm -f conftest*]
+)dnl
+dnl
+define(AC_TEST_PROGRAM,
+[AC_PROVIDE([$0])ifelse([$4], , , [AC_REQUIRE([AC_CROSS_CHECK])if test -n "$cross_compiling"
+then
+  $4
+else
+])dnl
+cat > conftest.c <<EOF
+#include "confdefs.h"
+[$1]
+EOF
+eval $compile
+if test -s conftest && (./conftest; exit) 2>/dev/null; then
+  ifelse([$2], , :, [$2
+])
+ifelse([$3], , , [else
+  $3
+])dnl
+fi
+ifelse([$4], , , fi
+)dnl
+rm -fr conftest*])dnl
+dnl
+define(AC_TEST_CPP,
+[AC_REQUIRE([AC_PROG_CPP])cat > conftest.c <<EOF
+#include "confdefs.h"
+[$1]
+EOF
+dnl Some shells (Coherent) do redirections in the wrong order, so need
+dnl the parens.
+err=`eval "($CPP conftest.c >/dev/null) 2>&1"`
+if test -z "$err"; then
+  ifelse([$2], , :, [rm -rf conftest*
+  $2
+])
+ifelse([$3], , , [else
+  rm -rf conftest*
+  $3
+])dnl
+fi
+rm -f conftest*])dnl
+dnl
+define(AC_REPLACE_FUNCS,
+[for func in $1
+do
+AC_COMPILE_CHECK([${func}], [#include <ctype.h>], [
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_${func}) || defined (__stub___${func})
+choke me
+#else
+/* Override any gcc2 internal prototype to avoid an error.  */
+extern char ${func}(); ${func}();
+#endif
+], , [LIBOBJS="$LIBOBJS ${func}.o"
+test -n "$verbose" && echo "	using ${func}.o instead"])
+done
+AC_SUBST(LIBOBJS)dnl
+])dnl
+dnl
+define(AC_FUNC_CHECK,
+[ifelse([$3], , [AC_COMPILE_CHECK($1, [#include <ctype.h>], [
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$1) || defined (__stub___$1)
+choke me
+#else
+/* Override any gcc2 internal prototype to avoid an error.  */
+extern char $1(); $1();
+#endif
+],
+$2)], [AC_COMPILE_CHECK($1, [#include <ctype.h>], [
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$1) || defined (__stub___$1)
+choke me
+#else
+/* Override any gcc2 internal prototype to avoid an error.  */
+extern char $1(); $1();
+#endif
+],
+$2, $3)])dnl
+])dnl
+dnl
+define(AC_HAVE_FUNCS,
+[for func in $1
+do
+changequote(,)dnl
+trfunc=HAVE_`echo $func | tr '[a-z]' '[A-Z]'`
+changequote([,])dnl
+AC_FUNC_CHECK(${func},
+AC_DEFINE(${trfunc}))dnl
+done
+])dnl
+dnl
+define(AC_HAVE_HEADERS,
+[for hdr in $1
+do
+changequote(,)dnl
+trhdr=HAVE_`echo $hdr | tr '[a-z]./' '[A-Z]__'`
+changequote([,])dnl
+AC_HEADER_CHECK(${hdr},
+AC_DEFINE(${trhdr}))dnl
+done
+])dnl
+dnl
+define(AC_HAVE_LIBRARY, [dnl
+changequote(/,/)dnl
+define(/libname/, dnl
+patsubst(patsubst($1, /lib\([^\.]*\)\.a/, /\1/), /-l/, //))dnl
+changequote([,])dnl
+LIBS_save="${LIBS}"
+LIBS="${LIBS} -l[]libname[]"
+have_lib=""
+AC_COMPILE_CHECK([-l[]libname[]], , [main();], [have_lib="1"])dnl
+LIBS="${LIBS_save}"
+ifelse($#, 1, [dnl
+if test -n "${have_lib}"; then
+   AC_DEFINE([HAVE_LIB]translit(libname, [a-z], [A-Z]))
+   LIBS="${LIBS} -l[]libname[]"
+fi
+undefine(libname)dnl
+], [dnl
+if test -n "${have_lib}"; then
+   :; $2
+else
+   :; $3
+fi
+])])dnl
+dnl
+dnl
+dnl The big finish
+dnl
+dnl
+define(AC_OUTPUT,
+[changequote(,)dnl
+# Set default prefixes.
+if test -n "$prefix"; then
+  test -z "$exec_prefix" && exec_prefix='${prefix}'
+  prsub="s%^prefix\\([ 	]*\\)=\\([ 	]*\\).*$%prefix\\1=\\2$prefix%"
+fi
+if test -n "$exec_prefix"; then
+  prsub="$prsub
+s%^exec_prefix\\([ 	]*\\)=\\([ 	]*\\).*$%exec_prefix\\1=\\2$exec_prefix%"
+fi
+# Quote sed substitution magic chars in DEFS.
+cat >conftest.def <<EOF
+$DEFS
+EOF
+escape_ampersand_and_backslash='s%[&\\]%\\&%g'
+DEFS=`sed "$escape_ampersand_and_backslash" <conftest.def`
+rm -f conftest.def
+# Substitute for predefined variables.
+changequote([,])dnl
+AC_SUBST(LIBS)dnl
+AC_SUBST(srcdir)dnl
+dnl Substituting for DEFS would confuse sed if it contains multiple lines.
+ifdef([AC_CONFIG_NAMES],
+[divert(1)dnl
+s%@DEFS@%-DHAVE_CONFIG_H%],
+[divert(1)dnl
+s%@DEFS@%$DEFS%]
+[divert(2)dnl
+DEFS='$DEFS'
+])dnl
+divert(2)dnl
+prefix='$prefix'
+exec_prefix='$exec_prefix'
+prsub='$prsub'
+extrasub='$extrasub'
+divert(0)dnl
+
+trap 'rm -f config.status; exit 1' 1 3 15
+echo creating config.status
+rm -f config.status
+cat > config.status <<EOF
+#!/bin/sh
+# Generated automatically by configure.
+# Run this file to recreate the current configuration.
+# This directory was configured as follows,
+dnl hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+dnl so uname gets run too.
+# on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+#
+[#] [$]0 [$]configure_args
+
+for arg
+do
+  case "[\$]arg" in
+    -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    echo running [\$]{CONFIG_SHELL-/bin/sh} [$]0 [$]configure_args
+    exec [\$]{CONFIG_SHELL-/bin/sh} [$]0 [$]configure_args ;;
+    *) echo "Usage: config.status [--recheck]" 2>&1; exit 1 ;;
+  esac
+done
+
+ifdef([AC_CONFIG_NAMES],
+[trap 'rm -fr $1 AC_CONFIG_NAMES conftest*; exit 1' 1 3 15],
+[trap 'rm -f $1; exit 1' 1 3 15])
+dnl Insert the variable assignments.
+undivert(2)dnl
+EOF
+cat >> config.status <<\EOF
+
+top_srcdir=$srcdir
+
+CONFIG_FILES=${CONFIG_FILES-"$1"}
+for file in .. ${CONFIG_FILES}; do if test "x$file" != x..; then
+  srcdir=$top_srcdir
+  # Remove last slash and all that follows it.  Not all systems have dirname.
+changequote(,)dnl
+  dir=`echo $file|sed 's%/[^/][^/]*$%%'`
+changequote([,])dnl
+  if test "$dir" != "$file"; then
+    test "$top_srcdir" != . && srcdir=$top_srcdir/$dir
+    test ! -d $dir && mkdir $dir
+  fi
+  echo creating $file
+  rm -f $file
+  echo "# Generated automatically from `echo $file|sed 's|.*/||'`.in by configure." > $file
+  sed -e "
+$prsub
+dnl Shell code in configure.in might set extrasub.
+$extrasub
+dnl Insert the sed substitutions.
+undivert(1)dnl
+" $top_srcdir/${file}.in >> $file
+fi; done
+AC_OUTPUT_HEADER
+$2
+exit 0
+EOF
+chmod +x config.status
+${CONFIG_SHELL-/bin/sh} config.status
+])dnl
+dnl This is a subroutine of AC_OUTPUT, broken out primarily to avoid bugs
+dnl with long definitions in GNU m4 1.0.  This is called inside a quoted
+dnl here document whose contents are going into config.status.
+define(AC_OUTPUT_HEADER,[dnl
+ifdef([AC_CONFIG_NAMES],[dnl
+changequote(<<,>>)dnl
+
+CONFIG_HEADERS=${CONFIG_HEADERS-"AC_CONFIG_NAMES"}
+for file in .. ${CONFIG_HEADERS}; do if test "x$file" != x..; then
+echo creating $file
+
+# These sed commands are put into SEDDEFS when defining a macro.
+# They are broken into pieces to make the sed script easier to manage.
+# They are passed to sed as "A NAME B NAME C VALUE D", where NAME
+# is the cpp macro being defined and VALUE is the value it is being given.
+# Each defining turns into a single global substitution command.
+#
+# SEDd sets the value in "#define NAME VALUE" lines.
+SEDdA='s@^\([ 	]*\)#\([ 	]*define[ 	][ 	]*\)'
+SEDdB='\([ 	][ 	]*\)[^ 	]*@\1#\2'
+SEDdC='\3'
+SEDdD='@g'
+# SEDu turns "#undef NAME" with trailing blanks into "#define NAME VALUE".
+SEDuA='s@^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+SEDuB='\([ 	]\)@\1#\2define\3'
+SEDuC=' '
+SEDuD='\4@g'
+# SEDe turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+SEDeA='s@^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+SEDeB='<<$>>@\1#\2define\3'
+SEDeC=' '
+SEDeD='@g'
+changequote([,])dnl
+rm -f conftest.sed
+EOF
+# Turn off quoting long enough to insert the sed commands.
+rm -f conftest.sh
+cat > conftest.sh <<EOF
+$SEDDEFS
+EOF
+
+# Break up $SEDDEFS (now in conftest.sh) because some shells have a limit
+# on the size of here documents.
+
+# Maximum number of lines to put in a single here document.
+maxshlines=9
+
+while :
+do
+  # wc gives bogus results for an empty file on some systems.
+  lines=`grep -c . conftest.sh`
+  if test -z "$lines" || test "$lines" -eq 0; then break; fi
+  rm -f conftest.s1 conftest.s2
+  sed ${maxshlines}q conftest.sh > conftest.s1 # Like head -20.
+  sed 1,${maxshlines}d conftest.sh > conftest.s2 # Like tail +21.
+  # Write a limited-size here document to append to conftest.sed.
+  echo 'cat >> conftest.sed <<CONFEOF' >> config.status
+  cat conftest.s1 >> config.status
+  echo 'CONFEOF' >> config.status
+  rm -f conftest.s1 conftest.sh
+  mv conftest.s2 conftest.sh
+done
+rm -f conftest.sh
+
+# Now back to your regularly scheduled config.status.
+cat >> config.status <<\EOF
+# This sed command replaces #undef's with comments.  This is necessary, for
+# example, in the case of _POSIX_SOURCE, which is predefined and required
+# on some systems where configure will not decide to define it in
+[#] AC_CONFIG_NAMES.
+cat >> conftest.sed <<\CONFEOF
+changequote(,)dnl
+s,^[ 	]*#[ 	]*undef[ 	][ 	]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
+changequote([,])dnl
+CONFEOF
+rm -f conftest.h
+# Break up the sed commands because old seds have small limits.
+maxsedlines=20
+cp $top_srcdir/$file.in conftest.h1
+while :
+do
+  lines=`grep -c . conftest.sed`
+  if test -z "$lines" || test "$lines" -eq 0; then break; fi
+  rm -f conftest.s1 conftest.s2 conftest.h2
+  sed ${maxsedlines}q conftest.sed > conftest.s1 # Like head -20.
+  sed 1,${maxsedlines}d conftest.sed > conftest.s2 # Like tail +21.
+  sed -f conftest.s1 < conftest.h1 > conftest.h2
+  rm -f conftest.s1 conftest.h1 conftest.sed
+  mv conftest.h2 conftest.h1
+  mv conftest.s2 conftest.sed
+done
+rm -f conftest.sed conftest.h
+echo "/* $file.  Generated automatically by configure.  */" > conftest.h
+cat conftest.h1 >> conftest.h
+rm -f conftest.h1
+if cmp -s $file conftest.h 2>/dev/null; then
+  # The file exists and we would not be changing it.
+  echo "$file is unchanged"
+  rm -f conftest.h
+else
+  rm -f $file
+  mv conftest.h $file
+fi
+fi; done
+
+])])dnl
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
new file mode 100644
index 000000000..4b6793bc4
--- /dev/null
+++ b/lib/autoconf/general.m4
@@ -0,0 +1,841 @@
+dnl Parameterized macros that do not check for something specific.
+dnl This file is part of Autoconf.
+dnl Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2, or (at your option)
+dnl any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+dnl
+dnl Written by David MacKenzie, with help from
+dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
+dnl Roland McGrath, and Noah Friedman.
+dnl
+changequote([,])dnl
+undefine([eval])dnl
+undefine([include])dnl
+undefine([shift])dnl
+undefine([format])dnl
+dnl
+ifdef([__gnu__], , [errprint(Autoconf requires GNU m4
+)exit(1)])dnl
+dnl
+dnl
+dnl Utility functions for stamping the configure script.
+dnl
+dnl
+define(AC_ACVERSION, 1.6.1)dnl
+dnl This is defined by the --version option of the autoconf script.
+ifdef([AC_PRINT_VERSION], [errprint(Autoconf version AC_ACVERSION
+)])dnl
+dnl
+dnl These are currently not used, for the sake of people who diff
+dnl configure scripts and don't want spurious differences.
+dnl But they are too clever to just delete.
+dnl
+define(AC_USER, [esyscmd(
+changequote({,})dnl
+# Extract the user name from the first pair of parentheses.
+({sedcmd='s/[^(]*(\([^)]*\)).*/\1/';}
+changequote([,])dnl
+whoami || id|sed "$sedcmd") 2>/dev/null|tr -d '\012')])dnl
+dnl
+define(AC_HOST, [esyscmd((hostname || uname -n) 2>/dev/null|tr -d '\012')])dnl
+dnl
+define(AC_DATE, [esyscmd(date|tr -d '\012')])dnl
+dnl
+dnl
+dnl Controlling Autoconf operation
+dnl
+dnl
+dnl This is separate from AC_INIT to prevent GNU m4 1.0 from coredumping
+dnl when AC_CONFIG_HEADER is used.
+define(AC_NOTICE,
+[# Guess values for system-dependent variables and create Makefiles.
+# Generated automatically using autoconf.
+dnl [#] Generated automatically using autoconf version AC_ACVERSION
+dnl [#] by AC_USER@AC_HOST on AC_DATE
+# Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Usage: configure [--srcdir=DIR] [--host=HOST] [--gas] [--nfp]
+#        [--prefix=PREFIX] [--exec-prefix=PREFIX] [--with-PACKAGE[=VALUE]]
+# Ignores all args except --srcdir, --prefix, --exec-prefix, and
+# --with-PACKAGE[=VALUE] unless this script has special code to handle it.
+])dnl
+dnl
+define(AC_PARSEARGS,
+[for arg
+do
+  # Handle --exec-prefix with a space before the argument.
+  if test x$next_exec_prefix = xyes; then exec_prefix=$arg; next_exec_prefix=
+  # Handle --host with a space before the argument.
+  elif test x$next_host = xyes; then next_host=
+  # Handle --prefix with a space before the argument.
+  elif test x$next_prefix = xyes; then prefix=$arg; next_prefix=
+  # Handle --srcdir with a space before the argument.
+  elif test x$next_srcdir = xyes; then srcdir=$arg; next_srcdir=
+  else
+    case $arg in
+     # For backward compatibility, recognize -exec-prefix and --exec_prefix.
+     -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* | --exec=* | --exe=* | --ex=* | --e=*)
+changequote(,)dnl
+	exec_prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
+changequote([,])dnl
+     -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- | --exec | --exe | --ex | --e)
+	next_exec_prefix=yes ;;
+
+     -gas | --gas | --ga | --g) ;;
+
+     -host=* | --host=* | --hos=* | --ho=* | --h=*) ;;
+     -host | --host | --hos | --ho | --h)
+	next_host=yes ;;
+
+     -nfp | --nfp | --nf) ;;
+
+     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+changequote(,)dnl
+	prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
+changequote([,])dnl
+     -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+	next_prefix=yes ;;
+
+     -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=* | --s=*)
+changequote(,)dnl
+	srcdir=`echo $arg | sed 's/[-a-z_]*=//'` ;;
+changequote([,])dnl
+     -srcdir | --srcdir | --srcdi | --srcd | --src | --sr | --s)
+	next_srcdir=yes ;;
+
+     -with-* | --with-*)
+       package=`echo $arg|sed -e 's/-*with-//' -e 's/=.*//'`
+       # Reject names that aren't valid shell variable names.
+changequote(,)dnl
+       if test -n "`echo $package| sed 's/[-a-zA-Z0-9_]//g'`"; then
+changequote([,])dnl
+         echo "configure: $package: invalid package name" >&2; exit 1
+       fi
+       package=`echo $package| sed 's/-/_/g'`
+       case "$arg" in
+changequote(,)dnl
+         *=*) val="`echo $arg|sed 's/[^=]*=//'`" ;;
+changequote([,])dnl
+         *) val=1 ;;
+       esac
+       eval "with_$package='$val'" ;;
+
+     -v | -verbose | --verbose | --verbos | --verbo | --verb | --ver | --ve | --v)
+       verbose=yes ;;
+
+     *) ;;
+    esac
+  fi
+done
+])dnl
+dnl
+define(AC_INIT,
+[#!/bin/sh
+AC_NOTICE
+AC_PARSEARGS
+AC_PREPARE($1)])dnl
+dnl
+define(AC_PREPARE,
+[trap 'rm -fr conftest* confdefs* core; exit 1' 1 3 15
+trap 'rm -f confdefs*' 0
+
+# NLS nuisances.
+# These must not be set unconditionally because not all systems understand
+# e.g. LANG=C (notably SCO).
+if test "${LC_ALL+set}" = 'set' ; then LC_ALL=C; export LC_ALL; fi
+if test "${LANG+set}"   = 'set' ; then LANG=C;   export LANG;   fi
+
+rm -f conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo > confdefs.h
+compile='${CC-cc} $CFLAGS conftest.c -o conftest $LIBS >/dev/null 2>&1'
+
+# A filename unique to this package, relative to the directory that
+# configure is in, which we can look for to find out if srcdir is correct.
+unique_file=$1
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  srcdirdefaulted=yes
+  # Try the directory containing this script, then `..'.
+  prog=[$]0
+changequote(,)dnl
+  confdir=`echo $prog|sed 's%/[^/][^/]*$%%'`
+changequote([,])dnl
+  test "X$confdir" = "X$prog" && confdir=.
+  srcdir=$confdir
+  if test ! -r $srcdir/$unique_file; then
+    srcdir=..
+  fi
+fi
+if test ! -r $srcdir/$unique_file; then
+  if test x$srcdirdefaulted = xyes; then
+    echo "configure: Can not find sources in \`${confdir}' or \`..'." 1>&2
+  else
+    echo "configure: Can not find sources in \`${srcdir}'." 1>&2
+  fi
+  exit 1
+fi
+# Preserve a srcdir of `.' to avoid automounter screwups with pwd.
+# But we can't avoid them for `..', to make subdirectories work.
+case $srcdir in
+  .|/*|~*) ;;
+  *) srcdir=`cd $srcdir; pwd` ;; # Make relative path absolute.
+esac
+
+dnl This is effectively disabled because it is a nuisance if not using
+dnl a configuration header file.
+ifelse([AC_CONFIG_NAMES], [], [
+# Check for an already configured srcdir.
+if test -r $srcdir/config.status && \
+  test z"`sh -c pwd`" != z"`(cd $srcdir; sh -c pwd)`"; then
+  cat <<EOF >&2
+configure: The directory tree \`${srcdir}' is being used
+   as a build directory right now; it has been configured in its own
+   right.  You cannot currently configure and build in both the source
+   directory and another build directory.  To configure in this directory,
+   you must first do \`make distclean' in ${srcdir},
+   and then run configure again.
+EOF
+  exit 1
+ifelse([not ready yet], [], [ XXX this should do the following:
+* Edit "VPATH=..." into GNU vpath directives for %.c and %.h (%.y?).
+* Add -DCONFIG_BROKETS to DEFS (config.h is not good enough, because it is
+  used to FIND config.h).
+cat <<EOF >&2
+configure: WARNING: The directory tree \`${srcdir}' is being used
+   as a build directory right now; it has been configured in its own
+   right.  To configure in another directory as well, you MUST
+   use GNU make.  If you do not have GNU make, then you must
+   now do \`make distclean' in ${srcdir},
+   and then run ${progname} again.
+EOF])dnl
+fi])dnl
+
+# Save the original args to write them into config.status later.
+configure_args="[$]*"
+])dnl
+dnl
+dnl Protects the argument from being diverted twice
+dnl if this macro is called twice for it.
+dnl Diversion 0 is the normal output.
+dnl Diversion 1 is sed substitutions for output files.
+dnl Diversion 2 is variable assignments for config.status.
+define(AC_SUBST,
+[ifdef([AC_SUBST_$1], ,
+[define([AC_SUBST_$1], )dnl
+divert(1)dnl
+s%@$1@%[$]$1%g
+divert(2)dnl
+$1='[$]$1'
+divert(0)dnl
+])])dnl
+dnl
+define(AC_WITH,
+[[#] check whether --with-$1 was given
+withval="[$with_]patsubst($1,-,_)"
+if test -n "$withval"; then
+  ifelse([$2], , :, [$2])
+ifelse([$3], , , [else
+  $3
+])dnl
+fi
+])dnl
+dnl
+dnl Guess the value for the `prefix' variable by looking for
+dnl the argument program along PATH and taking its parent.
+dnl Example: if the argument is `gcc' and we find /usr/local/gnu/bin/gcc,
+dnl set `prefix' to /usr/local/gnu.
+define(AC_PREFIX,
+[if test -z "$prefix"
+then
+  echo checking for $1 to derive installation directory prefix
+  IFS="${IFS= 	}"; saveifs="$IFS"; IFS="$IFS:"
+  for dir in $PATH; do
+    test -z "$dir" && dir=.
+    if test $dir != . && test -f $dir/$1; then
+changequote(,)dnl
+      # Not all systems have dirname.
+      prefix=`echo $dir|sed 's%/[^/][^/]*$%%'`
+changequote([,])dnl
+      break
+    fi
+  done
+  IFS="$saveifs"
+  echo "	chose installation directory prefix ${prefix}"
+fi
+])dnl
+dnl
+define(AC_CONFIG_HEADER, [define(AC_CONFIG_NAMES, $1)])dnl
+dnl
+define(AC_DOREV, [#!/bin/sh
+# From configure.in $1
+])dnl
+define(AC_REVISION, [AC_DOREV(translit($1,$"))])dnl
+dnl
+dnl
+dnl Several simple subroutines to do various flavors of quoting.
+dnl
+dnl Quote $1 against shell "s.
+define(AC_QUOTE_DQUOTE, [dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
+patsubst($1, changequote(,)\([$"`\\]\)changequote([,]), \\\1)])dnl
+dnl
+dnl Quote $1 against shell 's.
+define(AC_QUOTE_SQUOTE, [patsubst($1, ', '\\'')])dnl
+dnl
+dnl Quote $1 against shell here documents (<<EOF).
+define(AC_QUOTE_HERE, [changequote({,})dnl
+dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
+patsubst(patsubst($1, \(\\[$`\\]\), \\\1), \([$`]\), \\\1){}dnl
+changequote([,])])dnl
+dnl
+dnl Quote $1 against the right hand side of a sed substitution.
+define(AC_QUOTE_SED, [changequote({,})dnl
+dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
+dnl % and @ are commonly used as the sed s separator character.
+patsubst($1, \([&\\%@]\), \\\1){}dnl
+changequote([,])])dnl
+dnl
+dnl Quote $1 against tokenization.
+define(AC_QUOTE_TOKEN, [changequote({,})dnl
+patsubst($1, \([	 ]\), \\\1){}dnl
+changequote([,])])dnl
+dnl
+dnl Subroutines of AC_DEFINE.  Does more quoting magic than any sane person
+dnl should be able to understand.  The point of it all is that what goes into
+dnl Makefile et al should be verbatim what was written in configure.in.
+define(AC_DEFINE_QUOTE, [dnl
+AC_QUOTE_TOKEN(AC_QUOTE_SQUOTE(AC_QUOTE_DQUOTE($1)))])dnl
+dnl
+define(AC_DEFINE_SEDQUOTE, [dnl
+AC_QUOTE_DQUOTE(AC_QUOTE_HERE(AC_QUOTE_HERE(AC_QUOTE_SED($1))))])dnl
+dnl
+dnl Don't compare $2 to a blank, so we can support "-Dfoo=".
+dnl If creating a configuration header file, we add
+dnl commands to SEDDEFS to define the variable.  SED[due][ABCD]
+dnl get defined in config.status.  Here we just insert the
+dnl variable parts of the string: the variable name to define
+dnl and the value to give it.
+dnl The newlines around the curly braces prevent sh syntax errors.
+define(AC_DEFINE,[
+{
+dnl Uniformly use AC_DEFINE_[SED]QUOTE, so callers of AC_DEFINE_UNQUOTED
+dnl can use AC_QUOTE_* manually if they want to.
+test -n "$verbose" && \
+ifelse($#, 2,
+[define([AC_VAL], $2)dnl
+echo "	defining" $1 to be ifelse(AC_VAL,, empty, AC_DEFINE_QUOTE(AC_VAL))],
+[define([AC_VAL], 1)dnl
+echo "	defining $1"])
+dnl
+echo "[#][define]" $1 AC_DEFINE_QUOTE(AC_VAL) >> confdefs.h
+dnl Define DEFS even if AC_CONFIG_NAMES for use in user case statements.
+DEFS="$DEFS -D$1=AC_DEFINE_QUOTE(AC_VAL)"
+ifdef([AC_CONFIG_NAMES],
+SEDDEFS="dnl
+${SEDDEFS}\${SEDdA}$1\${SEDdB}$1\${SEDdC}AC_DEFINE_SEDQUOTE(AC_VAL)\${SEDdD}
+\${SEDuA}$1\${SEDuB}$1\${SEDuC}AC_DEFINE_SEDQUOTE(AC_VAL)\${SEDuD}
+\${SEDeA}$1\${SEDeB}$1\${SEDeC}AC_DEFINE_SEDQUOTE(AC_VAL)\${SEDeD}
+"
+)dnl
+}
+])dnl
+dnl
+dnl Unsafe version of AC_DEFINE.
+dnl Users are responsible for the quoting nightmare.
+dnl Well, not all of it.  We need to pull the identify function out to
+dnl the top level, because m4 doesn't really support nested functions;
+dnl it doesn't distinguish between the arguments to the outer
+dnl function, which should be expanded, and the arguments to the inner
+dnl function, which shouldn't yet.
+define(AC_IDENTITY,$1)dnl
+define(AC_DEFINE_UNQUOTED,[dnl
+pushdef([AC_DEFINE_QUOTE],defn([AC_IDENTITY]))dnl
+pushdef([AC_DEFINE_SEDQUOTE],defn([AC_IDENTITY]))dnl
+AC_DEFINE($1,$2)dnl
+popdef([AC_DEFINE_SEDQUOTE])dnl
+popdef([AC_DEFINE_QUOTE])dnl
+])dnl
+dnl
+define(AC_BEFORE,
+[ifdef([AC_PROVIDE_$2], [errprint(__file__:__line__: [$2 was called before $1
+])])])dnl
+dnl
+define(AC_REQUIRE,
+[ifdef([AC_PROVIDE_$1],,[indir([$1])
+])])dnl
+dnl
+define(AC_PROVIDE,
+[define([AC_PROVIDE_$1],)])dnl
+dnl
+define(AC_OBSOLETE,
+[errprint(__file__:__line__: warning: [$1] is obsolete[$2]
+)])dnl
+dnl
+dnl
+dnl Checks for kinds of features
+dnl
+dnl
+define(AC_PROGRAM_CHECK,
+[if test -z "[$]$1"; then
+  # Extract the first word of `$2', so it can be a program name with args.
+  set dummy $2; word=[$]2
+  echo checking for $word
+  IFS="${IFS= 	}"; saveifs="$IFS"; IFS="${IFS}:"
+  for dir in $PATH; do
+    test -z "$dir" && dir=.
+    if test -f $dir/$word; then
+      $1="$3"
+      break
+    fi
+  done
+  IFS="$saveifs"
+fi
+ifelse([$4],,, [test -z "[$]$1" && $1="$4"])
+test -n "[$]$1" && test -n "$verbose" && echo "	setting $1 to [$]$1"
+AC_SUBST($1)dnl
+])dnl
+dnl
+define(AC_PROGRAMS_CHECK,
+[for p in $2
+do
+AC_PROGRAM_CHECK($1, [$]p, [$]p, )
+test -n "[$]$1" && break
+done
+ifelse([$3],,, [test -n "[$]$1" || $1="$3"
+])])dnl
+dnl
+define(AC_HEADER_EGREP,
+[AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])echo '#include "confdefs.h"
+#include <$2>' > conftest.c
+eval "$CPP conftest.c > conftest.out 2>&1"
+if egrep "$1" conftest.out >/dev/null 2>&1; then
+  ifelse([$3], , :, [rm -rf conftest*
+  $3
+])
+ifelse([$4], , , [else
+  rm -rf conftest*
+  $4
+])dnl
+fi
+rm -f conftest*
+])dnl
+dnl
+dnl Because this macro is used by AC_GCC_TRADITIONAL, which must come early,
+dnl it is not included in AC_BEFORE checks.
+define(AC_PROGRAM_EGREP,
+[AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])cat > conftest.c <<EOF
+#include "confdefs.h"
+[$2]
+EOF
+eval "$CPP conftest.c > conftest.out 2>&1"
+if egrep "$1" conftest.out >/dev/null 2>&1; then
+  ifelse([$3], , :, [rm -rf conftest*
+  $3
+])
+ifelse([$4], , , [else
+  rm -rf conftest*
+  $4
+])dnl
+fi
+rm -f conftest*
+])dnl
+dnl
+define(AC_HEADER_CHECK,
+[echo checking for $1
+ifelse([$3], , [AC_TEST_CPP([#include <$1>], [$2])],
+[AC_TEST_CPP([#include <$1>], [$2], [$3])])
+])dnl
+dnl
+define(AC_COMPILE_CHECK,
+[AC_PROVIDE([$0])dnl
+ifelse([$1], , , [echo checking for $1]
+)dnl
+cat > conftest.c <<EOF
+#include "confdefs.h"
+[$2]
+int main() { exit(0); }
+int t() { [$3] }
+EOF
+dnl Don't try to run the program, which would prevent cross-configuring.
+if eval $compile; then
+  ifelse([$4], , :, [rm -rf conftest*
+  $4
+])
+ifelse([$5], , , [else
+  rm -rf conftest*
+  $5
+])dnl
+fi
+rm -f conftest*]
+)dnl
+dnl
+define(AC_TEST_PROGRAM,
+[AC_PROVIDE([$0])ifelse([$4], , , [AC_REQUIRE([AC_CROSS_CHECK])if test -n "$cross_compiling"
+then
+  $4
+else
+])dnl
+cat > conftest.c <<EOF
+#include "confdefs.h"
+[$1]
+EOF
+eval $compile
+if test -s conftest && (./conftest; exit) 2>/dev/null; then
+  ifelse([$2], , :, [$2
+])
+ifelse([$3], , , [else
+  $3
+])dnl
+fi
+ifelse([$4], , , fi
+)dnl
+rm -fr conftest*])dnl
+dnl
+define(AC_TEST_CPP,
+[AC_REQUIRE([AC_PROG_CPP])cat > conftest.c <<EOF
+#include "confdefs.h"
+[$1]
+EOF
+dnl Some shells (Coherent) do redirections in the wrong order, so need
+dnl the parens.
+err=`eval "($CPP conftest.c >/dev/null) 2>&1"`
+if test -z "$err"; then
+  ifelse([$2], , :, [rm -rf conftest*
+  $2
+])
+ifelse([$3], , , [else
+  rm -rf conftest*
+  $3
+])dnl
+fi
+rm -f conftest*])dnl
+dnl
+define(AC_REPLACE_FUNCS,
+[for func in $1
+do
+AC_COMPILE_CHECK([${func}], [#include <ctype.h>], [
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_${func}) || defined (__stub___${func})
+choke me
+#else
+/* Override any gcc2 internal prototype to avoid an error.  */
+extern char ${func}(); ${func}();
+#endif
+], , [LIBOBJS="$LIBOBJS ${func}.o"
+test -n "$verbose" && echo "	using ${func}.o instead"])
+done
+AC_SUBST(LIBOBJS)dnl
+])dnl
+dnl
+define(AC_FUNC_CHECK,
+[ifelse([$3], , [AC_COMPILE_CHECK($1, [#include <ctype.h>], [
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$1) || defined (__stub___$1)
+choke me
+#else
+/* Override any gcc2 internal prototype to avoid an error.  */
+extern char $1(); $1();
+#endif
+],
+$2)], [AC_COMPILE_CHECK($1, [#include <ctype.h>], [
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$1) || defined (__stub___$1)
+choke me
+#else
+/* Override any gcc2 internal prototype to avoid an error.  */
+extern char $1(); $1();
+#endif
+],
+$2, $3)])dnl
+])dnl
+dnl
+define(AC_HAVE_FUNCS,
+[for func in $1
+do
+changequote(,)dnl
+trfunc=HAVE_`echo $func | tr '[a-z]' '[A-Z]'`
+changequote([,])dnl
+AC_FUNC_CHECK(${func},
+AC_DEFINE(${trfunc}))dnl
+done
+])dnl
+dnl
+define(AC_HAVE_HEADERS,
+[for hdr in $1
+do
+changequote(,)dnl
+trhdr=HAVE_`echo $hdr | tr '[a-z]./' '[A-Z]__'`
+changequote([,])dnl
+AC_HEADER_CHECK(${hdr},
+AC_DEFINE(${trhdr}))dnl
+done
+])dnl
+dnl
+define(AC_HAVE_LIBRARY, [dnl
+changequote(/,/)dnl
+define(/libname/, dnl
+patsubst(patsubst($1, /lib\([^\.]*\)\.a/, /\1/), /-l/, //))dnl
+changequote([,])dnl
+LIBS_save="${LIBS}"
+LIBS="${LIBS} -l[]libname[]"
+have_lib=""
+AC_COMPILE_CHECK([-l[]libname[]], , [main();], [have_lib="1"])dnl
+LIBS="${LIBS_save}"
+ifelse($#, 1, [dnl
+if test -n "${have_lib}"; then
+   AC_DEFINE([HAVE_LIB]translit(libname, [a-z], [A-Z]))
+   LIBS="${LIBS} -l[]libname[]"
+fi
+undefine(libname)dnl
+], [dnl
+if test -n "${have_lib}"; then
+   :; $2
+else
+   :; $3
+fi
+])])dnl
+dnl
+dnl
+dnl The big finish
+dnl
+dnl
+define(AC_OUTPUT,
+[changequote(,)dnl
+# Set default prefixes.
+if test -n "$prefix"; then
+  test -z "$exec_prefix" && exec_prefix='${prefix}'
+  prsub="s%^prefix\\([ 	]*\\)=\\([ 	]*\\).*$%prefix\\1=\\2$prefix%"
+fi
+if test -n "$exec_prefix"; then
+  prsub="$prsub
+s%^exec_prefix\\([ 	]*\\)=\\([ 	]*\\).*$%exec_prefix\\1=\\2$exec_prefix%"
+fi
+# Quote sed substitution magic chars in DEFS.
+cat >conftest.def <<EOF
+$DEFS
+EOF
+escape_ampersand_and_backslash='s%[&\\]%\\&%g'
+DEFS=`sed "$escape_ampersand_and_backslash" <conftest.def`
+rm -f conftest.def
+# Substitute for predefined variables.
+changequote([,])dnl
+AC_SUBST(LIBS)dnl
+AC_SUBST(srcdir)dnl
+dnl Substituting for DEFS would confuse sed if it contains multiple lines.
+ifdef([AC_CONFIG_NAMES],
+[divert(1)dnl
+s%@DEFS@%-DHAVE_CONFIG_H%],
+[divert(1)dnl
+s%@DEFS@%$DEFS%]
+[divert(2)dnl
+DEFS='$DEFS'
+])dnl
+divert(2)dnl
+prefix='$prefix'
+exec_prefix='$exec_prefix'
+prsub='$prsub'
+extrasub='$extrasub'
+divert(0)dnl
+
+trap 'rm -f config.status; exit 1' 1 3 15
+echo creating config.status
+rm -f config.status
+cat > config.status <<EOF
+#!/bin/sh
+# Generated automatically by configure.
+# Run this file to recreate the current configuration.
+# This directory was configured as follows,
+dnl hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+dnl so uname gets run too.
+# on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+#
+[#] [$]0 [$]configure_args
+
+for arg
+do
+  case "[\$]arg" in
+    -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    echo running [\$]{CONFIG_SHELL-/bin/sh} [$]0 [$]configure_args
+    exec [\$]{CONFIG_SHELL-/bin/sh} [$]0 [$]configure_args ;;
+    *) echo "Usage: config.status [--recheck]" 2>&1; exit 1 ;;
+  esac
+done
+
+ifdef([AC_CONFIG_NAMES],
+[trap 'rm -fr $1 AC_CONFIG_NAMES conftest*; exit 1' 1 3 15],
+[trap 'rm -f $1; exit 1' 1 3 15])
+dnl Insert the variable assignments.
+undivert(2)dnl
+EOF
+cat >> config.status <<\EOF
+
+top_srcdir=$srcdir
+
+CONFIG_FILES=${CONFIG_FILES-"$1"}
+for file in .. ${CONFIG_FILES}; do if test "x$file" != x..; then
+  srcdir=$top_srcdir
+  # Remove last slash and all that follows it.  Not all systems have dirname.
+changequote(,)dnl
+  dir=`echo $file|sed 's%/[^/][^/]*$%%'`
+changequote([,])dnl
+  if test "$dir" != "$file"; then
+    test "$top_srcdir" != . && srcdir=$top_srcdir/$dir
+    test ! -d $dir && mkdir $dir
+  fi
+  echo creating $file
+  rm -f $file
+  echo "# Generated automatically from `echo $file|sed 's|.*/||'`.in by configure." > $file
+  sed -e "
+$prsub
+dnl Shell code in configure.in might set extrasub.
+$extrasub
+dnl Insert the sed substitutions.
+undivert(1)dnl
+" $top_srcdir/${file}.in >> $file
+fi; done
+AC_OUTPUT_HEADER
+$2
+exit 0
+EOF
+chmod +x config.status
+${CONFIG_SHELL-/bin/sh} config.status
+])dnl
+dnl This is a subroutine of AC_OUTPUT, broken out primarily to avoid bugs
+dnl with long definitions in GNU m4 1.0.  This is called inside a quoted
+dnl here document whose contents are going into config.status.
+define(AC_OUTPUT_HEADER,[dnl
+ifdef([AC_CONFIG_NAMES],[dnl
+changequote(<<,>>)dnl
+
+CONFIG_HEADERS=${CONFIG_HEADERS-"AC_CONFIG_NAMES"}
+for file in .. ${CONFIG_HEADERS}; do if test "x$file" != x..; then
+echo creating $file
+
+# These sed commands are put into SEDDEFS when defining a macro.
+# They are broken into pieces to make the sed script easier to manage.
+# They are passed to sed as "A NAME B NAME C VALUE D", where NAME
+# is the cpp macro being defined and VALUE is the value it is being given.
+# Each defining turns into a single global substitution command.
+#
+# SEDd sets the value in "#define NAME VALUE" lines.
+SEDdA='s@^\([ 	]*\)#\([ 	]*define[ 	][ 	]*\)'
+SEDdB='\([ 	][ 	]*\)[^ 	]*@\1#\2'
+SEDdC='\3'
+SEDdD='@g'
+# SEDu turns "#undef NAME" with trailing blanks into "#define NAME VALUE".
+SEDuA='s@^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+SEDuB='\([ 	]\)@\1#\2define\3'
+SEDuC=' '
+SEDuD='\4@g'
+# SEDe turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+SEDeA='s@^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+SEDeB='<<$>>@\1#\2define\3'
+SEDeC=' '
+SEDeD='@g'
+changequote([,])dnl
+rm -f conftest.sed
+EOF
+# Turn off quoting long enough to insert the sed commands.
+rm -f conftest.sh
+cat > conftest.sh <<EOF
+$SEDDEFS
+EOF
+
+# Break up $SEDDEFS (now in conftest.sh) because some shells have a limit
+# on the size of here documents.
+
+# Maximum number of lines to put in a single here document.
+maxshlines=9
+
+while :
+do
+  # wc gives bogus results for an empty file on some systems.
+  lines=`grep -c . conftest.sh`
+  if test -z "$lines" || test "$lines" -eq 0; then break; fi
+  rm -f conftest.s1 conftest.s2
+  sed ${maxshlines}q conftest.sh > conftest.s1 # Like head -20.
+  sed 1,${maxshlines}d conftest.sh > conftest.s2 # Like tail +21.
+  # Write a limited-size here document to append to conftest.sed.
+  echo 'cat >> conftest.sed <<CONFEOF' >> config.status
+  cat conftest.s1 >> config.status
+  echo 'CONFEOF' >> config.status
+  rm -f conftest.s1 conftest.sh
+  mv conftest.s2 conftest.sh
+done
+rm -f conftest.sh
+
+# Now back to your regularly scheduled config.status.
+cat >> config.status <<\EOF
+# This sed command replaces #undef's with comments.  This is necessary, for
+# example, in the case of _POSIX_SOURCE, which is predefined and required
+# on some systems where configure will not decide to define it in
+[#] AC_CONFIG_NAMES.
+cat >> conftest.sed <<\CONFEOF
+changequote(,)dnl
+s,^[ 	]*#[ 	]*undef[ 	][ 	]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
+changequote([,])dnl
+CONFEOF
+rm -f conftest.h
+# Break up the sed commands because old seds have small limits.
+maxsedlines=20
+cp $top_srcdir/$file.in conftest.h1
+while :
+do
+  lines=`grep -c . conftest.sed`
+  if test -z "$lines" || test "$lines" -eq 0; then break; fi
+  rm -f conftest.s1 conftest.s2 conftest.h2
+  sed ${maxsedlines}q conftest.sed > conftest.s1 # Like head -20.
+  sed 1,${maxsedlines}d conftest.sed > conftest.s2 # Like tail +21.
+  sed -f conftest.s1 < conftest.h1 > conftest.h2
+  rm -f conftest.s1 conftest.h1 conftest.sed
+  mv conftest.h2 conftest.h1
+  mv conftest.s2 conftest.sed
+done
+rm -f conftest.sed conftest.h
+echo "/* $file.  Generated automatically by configure.  */" > conftest.h
+cat conftest.h1 >> conftest.h
+rm -f conftest.h1
+if cmp -s $file conftest.h 2>/dev/null; then
+  # The file exists and we would not be changing it.
+  echo "$file is unchanged"
+  rm -f conftest.h
+else
+  rm -f $file
+  mv conftest.h $file
+fi
+fi; done
+
+])])dnl