diff -up firefox-78.8.0/build/autoconf/acgeneral.m4.D89554-autoconf1.diff firefox-78.8.0/build/autoconf/acgeneral.m4
--- firefox-78.8.0/build/autoconf/acgeneral.m4.D89554-autoconf1.diff	2021-02-25 13:48:13.603993474 +0100
+++ firefox-78.8.0/build/autoconf/acgeneral.m4	2021-02-25 13:48:13.603993474 +0100
@@ -0,0 +1,2607 @@
+dnl Parameterized macros.
+dnl Requires GNU m4.
+dnl This file is part of Autoconf.
+dnl Copyright (C) 1992, 93, 94, 95, 96, 1998 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., 59 Temple Place - Suite 330, Boston, MA
+dnl 02111-1307, USA.
+dnl
+dnl As a special exception, the Free Software Foundation gives unlimited
+dnl permission to copy, distribute and modify the configure scripts that
+dnl are the output of Autoconf.  You need not follow the terms of the GNU
+dnl General Public License when using or distributing such scripts, even
+dnl though portions of the text of Autoconf appear in them.  The GNU
+dnl General Public License (GPL) does govern all other use of the material
+dnl that constitutes the Autoconf program.
+dnl
+dnl Certain portions of the Autoconf source text are designed to be copied
+dnl (in certain cases, depending on the input) into the output of
+dnl Autoconf.  We call these the "data" portions.  The rest of the Autoconf
+dnl source text consists of comments plus executable code that decides which
+dnl of the data portions to output in any given case.  We call these
+dnl comments and executable code the "non-data" portions.  Autoconf never
+dnl copies any of the non-data portions into its output.
+dnl
+dnl This special exception to the GPL applies to versions of Autoconf
+dnl released by the Free Software Foundation.  When you make and
+dnl distribute a modified version of Autoconf, you may extend this special
+dnl exception to the GPL to apply to your modified version as well, *unless*
+dnl your modified version has the potential to copy into its output some
+dnl of the text that was the non-data portion of the version that you started
+dnl with.  (In other words, unless your change moves or copies text from
+dnl the non-data portions to the data portions.)  If your modification has
+dnl such potential, you must delete any notice of this special exception
+dnl to the GPL from your modified version.
+dnl
+dnl Written by David MacKenzie, with help from
+dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
+dnl Roland McGrath, Noah Friedman, david d zuhn, and many others.
+dnl
+divert(-1)dnl Throw away output until AC_INIT is called.
+changequote([, ])
+
+define(AC_ACVERSION, 2.13)
+
+dnl Some old m4's don't support m4exit.  But they provide
+dnl equivalent functionality by core dumping because of the
+dnl long macros we define.
+ifdef([__gnu__], , [errprint(Autoconf requires GNU m4.
+Install it before installing Autoconf or set the
+M4 environment variable to its path name.
+)m4exit(2)])
+
+undefine([eval])
+undefine([include])
+undefine([shift])
+undefine([format])
+
+
+dnl ### Defining macros
+
+
+dnl m4 output diversions.  We let m4 output them all in order at the end,
+dnl except that we explicitly undivert AC_DIVERSION_SED, AC_DIVERSION_CMDS,
+dnl and AC_DIVERSION_ICMDS.
+
+dnl AC_DIVERSION_NOTICE - 1 (= 0)	AC_REQUIRE'd #! /bin/sh line
+define(AC_DIVERSION_NOTICE, 1)dnl	copyright notice & option help strings
+define(AC_DIVERSION_INIT, 2)dnl		initialization code
+define(AC_DIVERSION_NORMAL_4, 3)dnl	AC_REQUIRE'd code, 4 level deep
+define(AC_DIVERSION_NORMAL_3, 4)dnl	AC_REQUIRE'd code, 3 level deep
+define(AC_DIVERSION_NORMAL_2, 5)dnl	AC_REQUIRE'd code, 2 level deep
+define(AC_DIVERSION_NORMAL_1, 6)dnl	AC_REQUIRE'd code, 1 level deep
+define(AC_DIVERSION_NORMAL, 7)dnl	the tests and output code
+define(AC_DIVERSION_SED, 8)dnl		variable substitutions in config.status
+define(AC_DIVERSION_CMDS, 9)dnl		extra shell commands in config.status
+define(AC_DIVERSION_ICMDS, 10)dnl	extra initialization in config.status
+
+dnl Change the diversion stream to STREAM, while stacking old values.
+dnl AC_DIVERT_PUSH(STREAM)
+define(AC_DIVERT_PUSH,
+[pushdef([AC_DIVERSION_CURRENT], $1)dnl
+divert(AC_DIVERSION_CURRENT)dnl
+])
+
+dnl Change the diversion stream to its previous value, unstacking it.
+dnl AC_DIVERT_POP()
+define(AC_DIVERT_POP,
+[popdef([AC_DIVERSION_CURRENT])dnl
+divert(AC_DIVERSION_CURRENT)dnl
+])
+
+dnl Initialize the diversion setup.
+define([AC_DIVERSION_CURRENT], AC_DIVERSION_NORMAL)
+dnl This will be popped by AC_REQUIRE in AC_INIT.
+pushdef([AC_DIVERSION_CURRENT], AC_DIVERSION_NOTICE)
+
+dnl The prologue for Autoconf macros.
+dnl AC_PRO(MACRO-NAME)
+define(AC_PRO,
+[define([AC_PROVIDE_$1], )dnl
+ifelse(AC_DIVERSION_CURRENT, AC_DIVERSION_NORMAL,
+[AC_DIVERT_PUSH(builtin(eval, AC_DIVERSION_CURRENT - 1))],
+[pushdef([AC_DIVERSION_CURRENT], AC_DIVERSION_CURRENT)])dnl
+])
+
+dnl The Epilogue for Autoconf macros.
+dnl AC_EPI()
+define(AC_EPI,
+[AC_DIVERT_POP()dnl
+ifelse(AC_DIVERSION_CURRENT, AC_DIVERSION_NORMAL,
+[undivert(AC_DIVERSION_NORMAL_4)dnl
+undivert(AC_DIVERSION_NORMAL_3)dnl
+undivert(AC_DIVERSION_NORMAL_2)dnl
+undivert(AC_DIVERSION_NORMAL_1)dnl
+])dnl
+])
+
+dnl Define a macro which automatically provides itself.  Add machinery
+dnl so the macro automatically switches expansion to the diversion
+dnl stack if it is not already using it.  In this case, once finished,
+dnl it will bring back all the code accumulated in the diversion stack.
+dnl This, combined with AC_REQUIRE, achieves the topological ordering of
+dnl macros.  We don't use this macro to define some frequently called
+dnl macros that are not involved in ordering constraints, to save m4
+dnl processing.
+dnl AC_DEFUN(NAME, EXPANSION)
+define([AC_DEFUN],
+[define($1, [AC_PRO([$1])$2[]AC_EPI()])])
+
+
+dnl ### Initialization
+
+
+dnl AC_INIT_NOTICE()
+AC_DEFUN(AC_INIT_NOTICE,
+[# Guess values for system-dependent variables and create Makefiles.
+# Generated automatically using autoconf version] AC_ACVERSION [
+# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+
+# Defaults:
+ac_help=
+ac_default_prefix=/usr/local
+[#] Any additions from configure.in:])
+
+dnl AC_PREFIX_DEFAULT(PREFIX)
+AC_DEFUN(AC_PREFIX_DEFAULT,
+[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
+ac_default_prefix=$1
+AC_DIVERT_POP()])
+
+dnl AC_INIT_PARSE_ARGS()
+AC_DEFUN(AC_INIT_PARSE_ARGS,
+[
+# Initialize some variables set by options.
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+build=NONE
+cache_file=./config.cache
+exec_prefix=NONE
+host=NONE
+no_create=
+nonopt=NONE
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+target=NONE
+verbose=
+x_includes=NONE
+x_libraries=NONE
+dnl Installation directory options.
+dnl These are left unexpanded so users can "make install exec_prefix=/foo"
+dnl and all the variables that are supposed to be based on exec_prefix
+dnl by default will actually change.
+dnl Use braces instead of parens because sh, perl, etc. also accept them.
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+# Initialize some other variables.
+subdirs=
+MFLAGS= MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+# Maximum number of lines to put in a shell here document.
+ac_max_here_lines=12
+
+ac_prev=
+for ac_option
+do
+
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval "$ac_prev=\$ac_option"
+    ac_prev=
+    continue
+  fi
+
+  case "$ac_option" in
+changequote(, )dnl
+  -*=*) ac_optarg=`echo "$ac_option" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
+changequote([, ])dnl
+  *) ac_optarg= ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case "$ac_option" in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir="$ac_optarg" ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build="$ac_optarg" ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file="$ac_optarg" ;;
+
+  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir="$ac_optarg" ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`echo $ac_option|sed -e 's/-*disable-//'`
+    # Reject names that are not valid shell variable names.
+changequote(, )dnl
+    if test -n "`echo $ac_feature| sed 's/[-a-zA-Z0-9_]//g'`"; then
+changequote([, ])dnl
+      AC_MSG_ERROR($ac_feature: invalid feature name)
+    fi
+    ac_feature=`echo $ac_feature| sed 's/-/_/g'`
+    eval "enable_${ac_feature}=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`echo $ac_option|sed -e 's/-*enable-//' -e 's/=.*//'`
+    # Reject names that are not valid shell variable names.
+changequote(, )dnl
+    if test -n "`echo $ac_feature| sed 's/[-_a-zA-Z0-9]//g'`"; then
+changequote([, ])dnl
+      AC_MSG_ERROR($ac_feature: invalid feature name)
+    fi
+    ac_feature=`echo $ac_feature| sed 's/-/_/g'`
+    case "$ac_option" in
+      *=*) ;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_${ac_feature}='$ac_optarg'" ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix="$ac_optarg" ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he)
+    # Omit some internal or obsolete options to make the list less imposing.
+    # This message is too long to be a string in the A/UX 3.1 sh.
+    cat << EOF
+changequote(, )dnl
+Usage: configure [options] [host]
+Options: [defaults in brackets after descriptions]
+Configuration:
+  --cache-file=FILE       cache test results in FILE
+  --help                  print this message
+  --no-create             do not create output files
+  --quiet, --silent       do not print \`checking...' messages
+  --version               print the version of autoconf that created configure
+Directory and file names:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [same as prefix]
+  --bindir=DIR            user executables in DIR [EPREFIX/bin]
+  --sbindir=DIR           system admin executables in DIR [EPREFIX/sbin]
+  --libexecdir=DIR        program executables in DIR [EPREFIX/libexec]
+  --datadir=DIR           read-only architecture-independent data in DIR
+                          [PREFIX/share]
+  --sysconfdir=DIR        read-only single-machine data in DIR [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data in DIR
+                          [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data in DIR [PREFIX/var]
+  --libdir=DIR            object code libraries in DIR [EPREFIX/lib]
+  --includedir=DIR        C header files in DIR [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc in DIR [/usr/include]
+  --infodir=DIR           info documentation in DIR [PREFIX/info]
+  --mandir=DIR            man documentation in DIR [PREFIX/man]
+  --srcdir=DIR            find the sources in DIR [configure dir or ..]
+  --program-prefix=PREFIX prepend PREFIX to installed program names
+  --program-suffix=SUFFIX append SUFFIX to installed program names
+  --program-transform-name=PROGRAM
+                          run sed PROGRAM on installed program names
+EOF
+    cat << EOF
+Host type:
+  --build=BUILD           configure for building on BUILD [BUILD=HOST]
+  --host=HOST             configure for HOST [guessed]
+  --target=TARGET         configure for TARGET [TARGET=HOST]
+Features and packages:
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --x-includes=DIR        X include files are in DIR
+  --x-libraries=DIR       X library files are in DIR
+changequote([, ])dnl
+EOF
+    if test -n "$ac_help"; then
+      echo "--enable and --with options recognized:$ac_help"
+    fi
+    exit 0 ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host="$ac_optarg" ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir="$ac_optarg" ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir="$ac_optarg" ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir="$ac_optarg" ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir="$ac_optarg" ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    localstatedir="$ac_optarg" ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir="$ac_optarg" ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir="$ac_optarg" ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix="$ac_optarg" ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix="$ac_optarg" ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix="$ac_optarg" ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name="$ac_optarg" ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir="$ac_optarg" ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir="$ac_optarg" ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site="$ac_optarg" ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir="$ac_optarg" ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir="$ac_optarg" ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target="$ac_optarg" ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers)
+    echo "configure generated by autoconf version AC_ACVERSION"
+    exit 0 ;;
+
+  -with-* | --with-*)
+    ac_package=`echo $ac_option|sed -e 's/-*with-//' -e 's/=.*//'`
+    # Reject names that are not valid shell variable names.
+changequote(, )dnl
+    if test -n "`echo $ac_package| sed 's/[-_a-zA-Z0-9]//g'`"; then
+changequote([, ])dnl
+      AC_MSG_ERROR($ac_package: invalid package name)
+    fi
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case "$ac_option" in
+      *=*) ;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_${ac_package}='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`echo $ac_option|sed -e 's/-*without-//'`
+    # Reject names that are not valid shell variable names.
+changequote(, )dnl
+    if test -n "`echo $ac_package| sed 's/[-a-zA-Z0-9_]//g'`"; then
+changequote([, ])dnl
+      AC_MSG_ERROR($ac_package: invalid package name)
+    fi
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    eval "with_${ac_package}=no" ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes="$ac_optarg" ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries="$ac_optarg" ;;
+
+  -*) AC_MSG_ERROR([$ac_option: invalid option; use --help to show usage])
+    ;;
+
+  *)
+changequote(, )dnl
+    if test -n "`echo $ac_option| sed 's/[-a-z0-9.]//g'`"; then
+changequote([, ])dnl
+      AC_MSG_WARN($ac_option: invalid host type)
+    fi
+    if test "x$nonopt" != xNONE; then
+      AC_MSG_ERROR(can only configure for one host and one target at a time)
+    fi
+    nonopt="$ac_option"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  AC_MSG_ERROR(missing argument to --`echo $ac_prev | sed 's/_/-/g'`)
+fi
+])
+
+dnl Try to have only one #! line, so the script doesn't look funny
+dnl for users of AC_REVISION.
+dnl AC_INIT_BINSH()
+AC_DEFUN(AC_INIT_BINSH,
+[#! /bin/sh
+])
+
+dnl AC_INIT(UNIQUE-FILE-IN-SOURCE-DIR)
+AC_DEFUN(AC_INIT,
+[sinclude(acsite.m4)dnl
+sinclude(./aclocal.m4)dnl
+AC_REQUIRE([AC_INIT_BINSH])dnl
+AC_INIT_NOTICE
+AC_DIVERT_POP()dnl to NORMAL
+AC_DIVERT_PUSH(AC_DIVERSION_INIT)dnl
+AC_INIT_PARSE_ARGS
+AC_INIT_PREPARE($1)dnl
+AC_DIVERT_POP()dnl to NORMAL
+])
+
+dnl AC_INIT_PREPARE(UNIQUE-FILE-IN-SOURCE-DIR)
+AC_DEFUN(AC_INIT_PREPARE,
+[trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
+
+# File descriptor usage:
+# 0 standard input
+# 1 file creation
+# 2 errors and warnings
+# 3 some systems may open it to /dev/tty
+# 4 used on the Kubota Titan
+define(AC_FD_MSG, 6)dnl
+[#] AC_FD_MSG checking for... messages and results
+define(AC_FD_CC, 5)dnl
+[#] AC_FD_CC compiler messages saved in config.log
+if test "$silent" = yes; then
+  exec AC_FD_MSG>/dev/null
+else
+  exec AC_FD_MSG>&1
+fi
+exec AC_FD_CC>./config.log
+
+echo "\
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+" 1>&AC_FD_CC
+
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Also quote any args containing shell metacharacters.
+ac_configure_args=
+for ac_arg
+do
+  case "$ac_arg" in
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c) ;;
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) ;;
+changequote(<<, >>)dnl
+dnl If you change this globbing pattern, test it on an old shell --
+dnl it's sensitive.  Putting any kind of quote in it causes syntax errors.
+  *" "*|*"	"*|*[\[\]\~\<<#>>\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*)
+  ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+changequote([, ])dnl
+  *) ac_configure_args="$ac_configure_args $ac_arg" ;;
+  esac
+done
+
+# NLS nuisances.
+# Only set these to C if already set.  These must not be set unconditionally
+# because not all systems understand e.g. LANG=C (notably SCO).
+# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
+# Non-C LC_CTYPE values break the ctype check.
+if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
+if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo > confdefs.h
+
+# 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.
+ac_unique_file=$1
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_prog=[$]0
+changequote(, )dnl
+  ac_confdir=`echo $ac_prog|sed 's%/[^/][^/]*$%%'`
+changequote([, ])dnl
+  test "x$ac_confdir" = "x$ac_prog" && ac_confdir=.
+  srcdir=$ac_confdir
+  if test ! -r $srcdir/$ac_unique_file; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+  if test "$ac_srcdir_defaulted" = yes; then
+    AC_MSG_ERROR(can not find sources in $ac_confdir or ..)
+  else
+    AC_MSG_ERROR(can not find sources in $srcdir)
+  fi
+fi
+dnl Double slashes in pathnames in object file debugging info
+dnl mess up M-x gdb in Emacs.
+changequote(, )dnl
+srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'`
+changequote([, ])dnl
+
+dnl Let the site file select an alternate cache file if it wants to.
+AC_SITE_LOAD
+AC_CACHE_LOAD
+AC_LANG_C
+dnl By default always use an empty string as the executable
+dnl extension.  Only change it if the script calls AC_EXEEXT.
+ac_exeext=
+dnl By default assume that objects files use an extension of .o.  Only
+dnl change it if the script calls AC_OBJEXT.
+ac_objext=o
+AC_PROG_ECHO_N
+dnl Substitute for predefined variables.
+AC_SUBST(SHELL)dnl
+AC_SUBST(CFLAGS)dnl
+AC_SUBST(CPPFLAGS)dnl
+AC_SUBST(CXXFLAGS)dnl
+AC_SUBST(FFLAGS)dnl
+AC_SUBST(DEFS)dnl
+AC_SUBST(LDFLAGS)dnl
+AC_SUBST(LIBS)dnl
+AC_SUBST(exec_prefix)dnl
+AC_SUBST(prefix)dnl
+AC_SUBST(program_transform_name)dnl
+dnl Installation directory options.
+AC_SUBST(bindir)dnl
+AC_SUBST(sbindir)dnl
+AC_SUBST(libexecdir)dnl
+AC_SUBST(datadir)dnl
+AC_SUBST(sysconfdir)dnl
+AC_SUBST(sharedstatedir)dnl
+AC_SUBST(localstatedir)dnl
+AC_SUBST(libdir)dnl
+AC_SUBST(includedir)dnl
+AC_SUBST(oldincludedir)dnl
+AC_SUBST(infodir)dnl
+AC_SUBST(mandir)dnl
+])
+
+
+dnl ### Selecting optional features
+
+
+dnl AC_ARG_ENABLE(FEATURE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
+AC_DEFUN(AC_ARG_ENABLE,
+[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
+ac_help="$ac_help
+[$2]"
+AC_DIVERT_POP()dnl
+[#] Check whether --enable-[$1] or --disable-[$1] was given.
+if test "[${enable_]patsubst([$1], -, _)+set}" = set; then
+  enableval="[$enable_]patsubst([$1], -, _)"
+  ifelse([$3], , :, [$3])
+ifelse([$4], , , [else
+  $4
+])dnl
+fi
+])
+
+AC_DEFUN(AC_ENABLE,
+[AC_OBSOLETE([$0], [; instead use AC_ARG_ENABLE])dnl
+AC_ARG_ENABLE([$1], [  --enable-$1], [$2], [$3])dnl
+])
+
+
+dnl ### Working with optional software
+
+
+dnl AC_ARG_WITH(PACKAGE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
+AC_DEFUN(AC_ARG_WITH,
+[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
+ac_help="$ac_help
+[$2]"
+AC_DIVERT_POP()dnl
+[#] Check whether --with-[$1] or --without-[$1] was given.
+if test "[${with_]patsubst([$1], -, _)+set}" = set; then
+  withval="[$with_]patsubst([$1], -, _)"
+  ifelse([$3], , :, [$3])
+ifelse([$4], , , [else
+  $4
+])dnl
+fi
+])
+
+AC_DEFUN(AC_WITH,
+[AC_OBSOLETE([$0], [; instead use AC_ARG_WITH])dnl
+AC_ARG_WITH([$1], [  --with-$1], [$2], [$3])dnl
+])
+
+
+dnl ### Transforming program names.
+
+
+dnl AC_ARG_PROGRAM()
+AC_DEFUN(AC_ARG_PROGRAM,
+[if test "$program_transform_name" = s,x,x,; then
+  program_transform_name=
+else
+  # Double any \ or $.  echo might interpret backslashes.
+  cat <<\EOF_SED > conftestsed
+s,\\,\\\\,g; s,\$,$$,g
+EOF_SED
+  program_transform_name="`echo $program_transform_name|sed -f conftestsed`"
+  rm -f conftestsed
+fi
+test "$program_prefix" != NONE &&
+  program_transform_name="s,^,${program_prefix},; $program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+  program_transform_name="s,\$\$,${program_suffix},; $program_transform_name"
+
+# sed with no file args requires a program.
+test "$program_transform_name" = "" && program_transform_name="s,x,x,"
+])
+
+
+dnl ### Version numbers
+
+
+dnl AC_REVISION(REVISION-INFO)
+AC_DEFUN(AC_REVISION,
+[AC_REQUIRE([AC_INIT_BINSH])dnl
+[# From configure.in] translit([$1], $")])
+
+dnl Subroutines of AC_PREREQ.
+
+dnl Change the dots in NUMBER into commas.
+dnl AC_PREREQ_SPLIT(NUMBER)
+define(AC_PREREQ_SPLIT,
+[translit($1, ., [, ])])
+
+dnl Default the ternary version number to 0 (e.g., 1, 7 -> 1, 7, 0).
+dnl AC_PREREQ_CANON(MAJOR, MINOR [,TERNARY])
+define(AC_PREREQ_CANON,
+[$1, $2, ifelse([$3], , 0, [$3])])
+
+dnl Complain and exit if version number 1 is less than version number 2.
+dnl PRINTABLE2 is the printable version of version number 2.
+dnl AC_PREREQ_COMPARE(MAJOR1, MINOR1, TERNARY1, MAJOR2, MINOR2, TERNARY2,
+dnl                   PRINTABLE2)
+define(AC_PREREQ_COMPARE,
+[ifelse(builtin([eval],
+[$3 + $2 * 1000 + $1 * 1000000 < $6 + $5 * 1000 + $4 * 1000000]), 1,
+[errprint(dnl
+FATAL ERROR: Autoconf version $7 or higher is required for this script
+)m4exit(3)])])
+
+dnl Complain and exit if the Autoconf version is less than VERSION.
+dnl AC_PREREQ(VERSION)
+define(AC_PREREQ,
+[AC_PREREQ_COMPARE(AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)),
+AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])), [$1])])
+
+
+dnl ### Getting the canonical system type
+
+
+dnl Find install-sh, config.sub, config.guess, and Cygnus configure
+dnl in directory DIR.  These are auxiliary files used in configuration.
+dnl DIR can be either absolute or relative to $srcdir.
+dnl AC_CONFIG_AUX_DIR(DIR)
+AC_DEFUN(AC_CONFIG_AUX_DIR,
+[AC_CONFIG_AUX_DIRS($1 $srcdir/$1)])
+
+dnl The default is `$srcdir' or `$srcdir/..' or `$srcdir/../..'.
+dnl There's no need to call this macro explicitly; just AC_REQUIRE it.
+AC_DEFUN(AC_CONFIG_AUX_DIR_DEFAULT,
+[AC_CONFIG_AUX_DIRS($srcdir $srcdir/.. $srcdir/../..)])
+
+dnl Internal subroutine.
+dnl Search for the configuration auxiliary files in directory list $1.
+dnl We look only for install-sh, so users of AC_PROG_INSTALL
+dnl do not automatically need to distribute the other auxiliary files.
+dnl AC_CONFIG_AUX_DIRS(DIR ...)
+AC_DEFUN(AC_CONFIG_AUX_DIRS,
+[ac_aux_dir=
+for ac_dir in $1; do
+  if test -f $ac_dir/install-sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f $ac_dir/install.sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  AC_MSG_ERROR([can not find install-sh or install.sh in $1])
+fi
+ac_config_guess=$ac_aux_dir/config.guess
+ac_config_sub=$ac_aux_dir/config.sub
+ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
+AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+])
+
+dnl Canonicalize the host, target, and build system types.
+AC_DEFUN(AC_CANONICAL_SYSTEM,
+[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+AC_BEFORE([$0], [AC_ARG_PROGRAM])
+# Do some error checking and defaulting for the host and target type.
+# The inputs are:
+#    configure --host=HOST --target=TARGET --build=BUILD NONOPT
+#
+# The rules are:
+# 1. You are not allowed to specify --host, --target, and nonopt at the
+#    same time.
+# 2. Host defaults to nonopt.
+# 3. If nonopt is not specified, then host defaults to the current host,
+#    as determined by config.guess.
+# 4. Target and build default to nonopt.
+# 5. If nonopt is not specified, then target and build default to host.
+
+# The aliases save the names the user supplied, while $host etc.
+# will get canonicalized.
+case $host---$target---$nonopt in
+NONE---*---* | *---NONE---* | *---*---NONE) ;;
+*) AC_MSG_ERROR(can only configure for one host and one target at a time) ;;
+esac
+
+AC_CANONICAL_HOST
+AC_CANONICAL_TARGET
+AC_CANONICAL_BUILD
+test "$host_alias" != "$target_alias" &&
+  test "$program_prefix$program_suffix$program_transform_name" = \
+    NONENONEs,x,x, &&
+  program_prefix=${target_alias}-
+])
+
+dnl Subroutines of AC_CANONICAL_SYSTEM.
+
+AC_DEFUN(AC_CANONICAL_HOST,
+[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+
+# Make sure we can run config.sub.
+if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
+else AC_MSG_ERROR(can not run $ac_config_sub)
+fi
+
+AC_MSG_CHECKING(host system type)
+
+dnl Set host_alias.
+host_alias=$host
+case "$host_alias" in
+NONE)
+  case $nonopt in
+  NONE)
+    if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
+    else AC_MSG_ERROR(can not guess host type; you must specify one)
+    fi ;;
+  *) host_alias=$nonopt ;;
+  esac ;;
+esac
+
+dnl Set the other host vars.
+changequote(<<, >>)dnl
+host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
+host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+changequote([, ])dnl
+AC_MSG_RESULT($host)
+AC_SUBST(host)dnl
+AC_SUBST(host_alias)dnl
+AC_SUBST(host_cpu)dnl
+AC_SUBST(host_vendor)dnl
+AC_SUBST(host_os)dnl
+])
+
+dnl Internal use only.
+AC_DEFUN(AC_CANONICAL_TARGET,
+[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+AC_MSG_CHECKING(target system type)
+
+dnl Set target_alias.
+target_alias=$target
+case "$target_alias" in
+NONE)
+  case $nonopt in
+  NONE) target_alias=$host_alias ;;
+  *) target_alias=$nonopt ;;
+  esac ;;
+esac
+
+dnl Set the other target vars.
+changequote(<<, >>)dnl
+target=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $target_alias`
+target_cpu=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+target_vendor=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+changequote([, ])dnl
+AC_MSG_RESULT($target)
+AC_SUBST(target)dnl
+AC_SUBST(target_alias)dnl
+AC_SUBST(target_cpu)dnl
+AC_SUBST(target_vendor)dnl
+AC_SUBST(target_os)dnl
+])
+
+dnl Internal use only.
+AC_DEFUN(AC_CANONICAL_BUILD,
+[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+AC_MSG_CHECKING(build system type)
+
+dnl Set build_alias.
+build_alias=$build
+case "$build_alias" in
+NONE)
+  case $nonopt in
+  NONE) build_alias=$host_alias ;;
+  *) build_alias=$nonopt ;;
+  esac ;;
+esac
+
+dnl Set the other build vars.
+changequote(<<, >>)dnl
+build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
+build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+changequote([, ])dnl
+AC_MSG_RESULT($build)
+AC_SUBST(build)dnl
+AC_SUBST(build_alias)dnl
+AC_SUBST(build_cpu)dnl
+AC_SUBST(build_vendor)dnl
+AC_SUBST(build_os)dnl
+])
+
+
+dnl AC_VALIDATE_CACHED_SYSTEM_TUPLE[(cmd)]
+dnl if the cache file is inconsistent with the current host,
+dnl target and build system types, execute CMD or print a default
+dnl error message.
+AC_DEFUN(AC_VALIDATE_CACHED_SYSTEM_TUPLE, [
+  AC_REQUIRE([AC_CANONICAL_SYSTEM])
+  AC_MSG_CHECKING([cached system tuple])
+  if { test x"${ac_cv_host_system_type+set}" = x"set" &&
+       test x"$ac_cv_host_system_type" != x"$host"; } ||
+     { test x"${ac_cv_build_system_type+set}" = x"set" &&
+       test x"$ac_cv_build_system_type" != x"$build"; } ||
+     { test x"${ac_cv_target_system_type+set}" = x"set" &&
+       test x"$ac_cv_target_system_type" != x"$target"; }; then
+      AC_MSG_RESULT([different])
+      ifelse($#, 1, [$1],
+        [AC_MSG_ERROR([remove config.cache and re-run configure])])
+  else
+    AC_MSG_RESULT(ok)
+  fi
+  ac_cv_host_system_type="$host"
+  ac_cv_build_system_type="$build"
+  ac_cv_target_system_type="$target"
+])
+
+
+dnl ### Caching test results
+
+
+dnl Look for site or system specific initialization scripts.
+dnl AC_SITE_LOAD()
+define(AC_SITE_LOAD,
+[# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    echo "loading site script $ac_site_file"
+    . "$ac_site_file"
+  fi
+done
+])
+
+dnl AC_CACHE_LOAD()
+define(AC_CACHE_LOAD,
+[if test -r "$cache_file"; then
+  echo "loading cache $cache_file"
+  . $cache_file
+else
+  echo "creating cache $cache_file"
+  > $cache_file
+fi
+])
+
+dnl AC_CACHE_SAVE()
+define(AC_CACHE_SAVE,
+[cat > confcache <<\EOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs.  It is not useful on other systems.
+# If it contains results you don't want to keep, you may remove or edit it.
+#
+# By default, configure uses ./config.cache as the cache file,
+# creating it if it does not exist already.  You can give configure
+# the --cache-file=FILE option to use a different cache file; that is
+# what configure does when it calls configure scripts in
+# subdirectories, so they share the cache.
+# Giving --cache-file=/dev/null disables caching, for debugging configure.
+# config.status only pays attention to the cache file if you give it the
+# --recheck option to rerun configure.
+#
+EOF
+dnl Allow a site initialization script to override cache values.
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+changequote(, )dnl
+(set) 2>&1 |
+  case `(ac_space=' '; set | grep ac_space) 2>&1` in
+  *ac_space=\ *)
+    # `set' does not quote correctly, so add quotes (double-quote substitution
+    # turns \\\\ into \\, and sed turns \\ into \).
+    sed -n \
+      -e "s/'/'\\\\''/g" \
+      -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p"
+    ;;
+  *)
+    # `set' quotes correctly as required by POSIX, so do not add quotes.
+    sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p'
+    ;;
+  esac >> confcache
+changequote([, ])dnl
+if cmp -s $cache_file confcache; then
+  :
+else
+  if test -w $cache_file; then
+    echo "updating cache $cache_file"
+    cat confcache > $cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+])
+
+dnl The name of shell var CACHE-ID must contain `_cv_' in order to get saved.
+dnl AC_CACHE_VAL(CACHE-ID, COMMANDS-TO-SET-IT)
+define(AC_CACHE_VAL,
+[dnl We used to use the below line, but it fails if the 1st arg is a
+dnl shell variable, so we need the eval.
+dnl if test "${$1+set}" = set; then
+dnl the '' avoids an AIX 4.1 sh bug ("invalid expansion").
+if eval "test \"`echo '$''{'$1'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&AC_FD_MSG
+else
+  $2
+fi
+])
+
+dnl AC_CACHE_CHECK(MESSAGE, CACHE-ID, COMMANDS)
+define(AC_CACHE_CHECK,
+[AC_MSG_CHECKING([$1])
+AC_CACHE_VAL([$2], [$3])
+AC_MSG_RESULT([$]$2)])
+
+
+dnl ### Defining symbols
+
+
+dnl Set VARIABLE to VALUE, verbatim, or 1.
+dnl AC_DEFINE(VARIABLE [, VALUE])
+define(AC_DEFINE,
+[cat >> confdefs.h <<\EOF
+[#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1)
+EOF
+])
+
+dnl Similar, but perform shell substitutions $ ` \ once on VALUE.
+define(AC_DEFINE_UNQUOTED,
+[cat >> confdefs.h <<EOF
+[#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1)
+EOF
+])
+
+
+dnl ### Setting output variables
+
+
+dnl This macro protects VARIABLE from being diverted twice
+dnl if this macro is called twice for it.
+dnl AC_SUBST(VARIABLE)
+define(AC_SUBST,
+[ifdef([AC_SUBST_$1], ,
+[define([AC_SUBST_$1], )dnl
+AC_DIVERT_PUSH(AC_DIVERSION_SED)dnl
+s%@$1@%[$]$1%g
+AC_DIVERT_POP()dnl
+])])
+
+dnl AC_SUBST_FILE(VARIABLE)
+define(AC_SUBST_FILE,
+[ifdef([AC_SUBST_$1], ,
+[define([AC_SUBST_$1], )dnl
+AC_DIVERT_PUSH(AC_DIVERSION_SED)dnl
+/@$1@/r [$]$1
+s%@$1@%%g
+AC_DIVERT_POP()dnl
+])])
+
+
+dnl ### Printing messages
+
+
+dnl AC_MSG_CHECKING(FEATURE-DESCRIPTION)
+define(AC_MSG_CHECKING,
+[echo $ac_n "checking $1""... $ac_c" 1>&AC_FD_MSG
+echo "configure:__oline__: checking $1" >&AC_FD_CC])
+
+dnl AC_CHECKING(FEATURE-DESCRIPTION)
+define(AC_CHECKING,
+[echo "checking $1" 1>&AC_FD_MSG
+echo "configure:__oline__: checking $1" >&AC_FD_CC])
+
+dnl AC_MSG_RESULT(RESULT-DESCRIPTION)
+define(AC_MSG_RESULT,
+[echo "$ac_t""$1" 1>&AC_FD_MSG])
+
+dnl AC_VERBOSE(RESULT-DESCRIPTION)
+define(AC_VERBOSE,
+[AC_OBSOLETE([$0], [; instead use AC_MSG_RESULT])dnl
+echo "	$1" 1>&AC_FD_MSG])
+
+dnl AC_MSG_WARN(PROBLEM-DESCRIPTION)
+define(AC_MSG_WARN,
+[echo "configure: warning: $1" 1>&2])
+
+dnl AC_MSG_ERROR(ERROR-DESCRIPTION)
+define(AC_MSG_ERROR,
+[{ echo "configure: error: $1" 1>&2; exit 1; }])
+
+
+dnl ### Selecting which language to use for testing
+
+
+dnl AC_LANG_C()
+AC_DEFUN(AC_LANG_C,
+[define([AC_LANG], [C])dnl
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&AC_FD_CC'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AC_FD_CC'
+cross_compiling=$ac_cv_prog_cc_cross
+])
+
+dnl AC_LANG_CPLUSPLUS()
+AC_DEFUN(AC_LANG_CPLUSPLUS,
+[define([AC_LANG], [CPLUSPLUS])dnl
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&AC_FD_CC'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AC_FD_CC'
+cross_compiling=$ac_cv_prog_cxx_cross
+])
+
+dnl AC_LANG_FORTRAN77()
+AC_DEFUN(AC_LANG_FORTRAN77,
+[define([AC_LANG], [FORTRAN77])dnl
+ac_ext=f
+ac_compile='${F77-f77} -c $FFLAGS conftest.$ac_ext 1>&AC_FD_CC'
+ac_link='${F77-f77} -o conftest${ac_exeext} $FFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AC_FD_CC'
+cross_compiling=$ac_cv_prog_f77_cross
+])
+
+dnl Push the current language on a stack.
+dnl AC_LANG_SAVE()
+define(AC_LANG_SAVE,
+[pushdef([AC_LANG_STACK], AC_LANG)])
+
+dnl Restore the current language from the stack.
+dnl AC_LANG_RESTORE()
+pushdef([AC_LANG_RESTORE],
+[ifelse(AC_LANG_STACK, [C], [AC_LANG_C],dnl
+AC_LANG_STACK, [CPLUSPLUS], [AC_LANG_CPLUSPLUS],dnl
+AC_LANG_STACK, [FORTRAN77], [AC_LANG_FORTRAN77])[]popdef([AC_LANG_STACK])])
+
+
+dnl ### Compiler-running mechanics
+
+
+dnl The purpose of this macro is to "configure:123: command line"
+dnl written into config.log for every test run.
+dnl AC_TRY_EVAL(VARIABLE)
+AC_DEFUN(AC_TRY_EVAL,
+[{ (eval echo configure:__oline__: \"[$]$1\") 1>&AC_FD_CC; dnl
+(eval [$]$1) 2>&AC_FD_CC; }])
+
+dnl AC_TRY_COMMAND(COMMAND)
+AC_DEFUN(AC_TRY_COMMAND,
+[{ ac_try='$1'; AC_TRY_EVAL(ac_try); }])
+
+
+dnl ### Dependencies between macros
+
+
+dnl AC_BEFORE(THIS-MACRO-NAME, CALLED-MACRO-NAME)
+define(AC_BEFORE,
+[ifdef([AC_PROVIDE_$2], [errprint(__file__:__line__: [$2 was called before $1
+])])])
+
+dnl AC_REQUIRE(MACRO-NAME)
+define(AC_REQUIRE,
+[ifdef([AC_PROVIDE_$1], ,
+[AC_DIVERT_PUSH(builtin(eval, AC_DIVERSION_CURRENT - 1))dnl
+indir([$1])
+AC_DIVERT_POP()dnl
+])])
+
+dnl AC_PROVIDE(MACRO-NAME)
+define(AC_PROVIDE,
+[define([AC_PROVIDE_$1], )])
+
+dnl AC_OBSOLETE(THIS-MACRO-NAME [, SUGGESTION])
+define(AC_OBSOLETE,
+[errprint(__file__:__line__: warning: [$1] is obsolete[$2]
+)])
+
+
+dnl ### Checking for programs
+
+
+dnl AC_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR, VALUE-IF-FOUND
+dnl               [, [VALUE-IF-NOT-FOUND] [, [PATH] [, [REJECT]]]])
+AC_DEFUN(AC_CHECK_PROG,
+[# Extract the first word of "$2", so it can be a program name with args.
+set dummy $2; ac_word=[$]2
+AC_MSG_CHECKING([for $ac_word])
+AC_CACHE_VAL(ac_cv_prog_$1,
+[if test -n "[$]$1"; then
+  ac_cv_prog_$1="[$]$1" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+ifelse([$6], , , [  ac_prog_rejected=no
+])dnl
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word.  This closes a longstanding sh security hole.
+  ac_dummy="ifelse([$5], , $PATH, [$5])"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+ifelse([$6], , , dnl
+[      if test "[$ac_dir/$ac_word]" = "$6"; then
+        ac_prog_rejected=yes
+	continue
+      fi
+])dnl
+      ac_cv_prog_$1="$3"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+ifelse([$6], , , [if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy [$]ac_cv_prog_$1
+  shift
+  if test [$]# -gt 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set $1 to just the basename; use the full file name.
+    shift
+    set dummy "$ac_dir/$ac_word" "[$]@"
+    shift
+    ac_cv_prog_$1="[$]@"
+ifelse([$2], [$4], dnl
+[  else
+    # Default is a loser.
+    AC_MSG_ERROR([$1=$6 unacceptable, but no other $4 found in dnl
+ifelse([$5], , [\$]PATH, [$5])])
+])dnl
+  fi
+fi
+])dnl
+dnl If no 4th arg is given, leave the cache variable unset,
+dnl so AC_CHECK_PROGS will keep looking.
+ifelse([$4], , , [  test -z "[$]ac_cv_prog_$1" && ac_cv_prog_$1="$4"
+])dnl
+fi])dnl
+$1="$ac_cv_prog_$1"
+if test -n "[$]$1"; then
+  AC_MSG_RESULT([$]$1)
+else
+  AC_MSG_RESULT(no)
+fi
+AC_SUBST($1)dnl
+])
+
+dnl AC_PATH_PROG(VARIABLE, PROG-TO-CHECK-FOR [, VALUE-IF-NOT-FOUND [, PATH]])
+AC_DEFUN(AC_PATH_PROG,
+[# Extract the first word of "$2", so it can be a program name with args.
+set dummy $2; ac_word=[$]2
+AC_MSG_CHECKING([for $ac_word])
+AC_CACHE_VAL(ac_cv_path_$1,
+[case "[$]$1" in
+  /*)
+  ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
+  ;;
+  ?:/*)			 
+  ac_cv_path_$1="[$]$1" # Let the user override the test with a dos path.
+  ;;
+  *)
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word.  This closes a longstanding sh security hole.
+  ac_dummy="ifelse([$4], , $PATH, [$4])"
+  for ac_dir in $ac_dummy; do 
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_path_$1="$ac_dir/$ac_word"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+dnl If no 3rd arg is given, leave the cache variable unset,
+dnl so AC_PATH_PROGS will keep looking.
+ifelse([$3], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$3"
+])dnl
+  ;;
+esac])dnl
+$1="$ac_cv_path_$1"
+if test -n "[$]$1"; then
+  AC_MSG_RESULT([$]$1)
+else
+  AC_MSG_RESULT(no)
+fi
+AC_SUBST($1)dnl
+])
+
+dnl AC_CHECK_PROGS(VARIABLE, PROGS-TO-CHECK-FOR [, VALUE-IF-NOT-FOUND
+dnl                [, PATH]])
+AC_DEFUN(AC_CHECK_PROGS,
+[for ac_prog in $2
+do
+AC_CHECK_PROG($1, [$]ac_prog, [$]ac_prog, , $4)
+test -n "[$]$1" && break
+done
+ifelse([$3], , , [test -n "[$]$1" || $1="$3"
+])])
+
+dnl AC_PATH_PROGS(VARIABLE, PROGS-TO-CHECK-FOR [, VALUE-IF-NOT-FOUND
+dnl               [, PATH]])
+AC_DEFUN(AC_PATH_PROGS,
+[for ac_prog in $2
+do
+AC_PATH_PROG($1, [$]ac_prog, , $4)
+test -n "[$]$1" && break
+done
+ifelse([$3], , , [test -n "[$]$1" || $1="$3"
+])])
+
+dnl Internal subroutine.
+AC_DEFUN(AC_CHECK_TOOL_PREFIX,
+[AC_REQUIRE([AC_CANONICAL_HOST])AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+if test $host != $build; then
+  ac_tool_prefix=${host_alias}-
+else
+  ac_tool_prefix=
+fi
+])
+
+dnl AC_CHECK_TOOL(VARIABLE, PROG-TO-CHECK-FOR[, VALUE-IF-NOT-FOUND [, PATH]])
+AC_DEFUN(AC_CHECK_TOOL,
+[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
+AC_CHECK_PROG($1, ${ac_tool_prefix}$2, ${ac_tool_prefix}$2,
+	      ifelse([$3], , [$2], ), $4)
+ifelse([$3], , , [
+if test -z "$ac_cv_prog_$1"; then
+if test -n "$ac_tool_prefix"; then
+  AC_CHECK_PROG($1, $2, $2, $3)
+else
+  $1="$3"
+fi
+fi])
+])
+
+dnl Guess the value for the `prefix' variable by looking for
+dnl the argument program along PATH and taking its parent.
+dnl Example: if the argument is `gcc' and we find /usr/local/gnu/bin/gcc,
+dnl set `prefix' to /usr/local/gnu.
+dnl This comes too late to find a site file based on the prefix,
+dnl and it might use a cached value for the path.
+dnl No big loss, I think, since most configures don't use this macro anyway.
+dnl AC_PREFIX_PROGRAM(PROGRAM)
+AC_DEFUN(AC_PREFIX_PROGRAM,
+[if test "x$prefix" = xNONE; then
+changequote(<<, >>)dnl
+define(<<AC_VAR_NAME>>, translit($1, [a-z], [A-Z]))dnl
+changequote([, ])dnl
+dnl We reimplement AC_MSG_CHECKING (mostly) to avoid the ... in the middle.
+echo $ac_n "checking for prefix by $ac_c" 1>&AC_FD_MSG
+AC_PATH_PROG(AC_VAR_NAME, $1)
+changequote(<<, >>)dnl
+  if test -n "$ac_cv_path_<<>>AC_VAR_NAME"; then
+    prefix=`echo $ac_cv_path_<<>>AC_VAR_NAME|sed 's%/[^/][^/]*//*[^/][^/]*$%%'`
+changequote([, ])dnl
+  fi
+fi
+undefine([AC_VAR_NAME])dnl
+])
+
+dnl Try to compile, link and execute TEST-PROGRAM.  Set WORKING-VAR to
+dnl `yes' if the current compiler works, otherwise set it ti `no'.  Set
+dnl CROSS-VAR to `yes' if the compiler and linker produce non-native
+dnl executables, otherwise set it to `no'.  Before calling
+dnl `AC_TRY_COMPILER()', call `AC_LANG_*' to set-up for the right
+dnl language.
+dnl 
+dnl AC_TRY_COMPILER(TEST-PROGRAM, WORKING-VAR, CROSS-VAR)
+AC_DEFUN(AC_TRY_COMPILER,
+[cat > conftest.$ac_ext << EOF
+ifelse(AC_LANG, [FORTRAN77], ,
+[
+[#]line __oline__ "configure"
+#include "confdefs.h"
+])
+[$1]
+EOF
+if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+  [$2]=yes
+  # If we can't run a trivial program, we are probably using a cross compiler.
+  if (./conftest; exit) 2>/dev/null; then
+    [$3]=no
+  else
+    [$3]=yes
+  fi
+else
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat conftest.$ac_ext >&AC_FD_CC
+  [$2]=no
+fi
+rm -fr conftest*])
+
+
+dnl ### Checking for libraries
+
+
+dnl AC_TRY_LINK_FUNC(func, action-if-found, action-if-not-found)
+dnl Try to link a program that calls FUNC, handling GCC builtins.  If
+dnl the link succeeds, execute ACTION-IF-FOUND; otherwise, execute
+dnl ACTION-IF-NOT-FOUND.
+
+AC_DEFUN(AC_TRY_LINK_FUNC,
+AC_TRY_LINK(dnl
+ifelse([$1], [main], , dnl Avoid conflicting decl of main.
+[/* Override any gcc2 internal prototype to avoid an error.  */
+]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+extern "C"
+#endif
+])dnl
+[/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $1();
+]),
+[$1()],
+[$2],
+[$3]))
+
+
+dnl AC_SEARCH_LIBS(FUNCTION, SEARCH-LIBS [, ACTION-IF-FOUND
+dnl            [, ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]])
+dnl Search for a library defining FUNC, if it's not already available.
+
+AC_DEFUN(AC_SEARCH_LIBS,
+[AC_PREREQ([2.13])
+AC_CACHE_CHECK([for library containing $1], [ac_cv_search_$1],
+[ac_func_search_save_LIBS="$LIBS"
+ac_cv_search_$1="no"
+AC_TRY_LINK_FUNC([$1], [ac_cv_search_$1="none required"])
+test "$ac_cv_search_$1" = "no" && for i in $2; do
+LIBS="-l$i $5 $ac_func_search_save_LIBS"
+AC_TRY_LINK_FUNC([$1],
+[ac_cv_search_$1="-l$i"
+break])
+done
+LIBS="$ac_func_search_save_LIBS"])
+if test "$ac_cv_search_$1" != "no"; then
+  test "$ac_cv_search_$1" = "none required" || LIBS="$ac_cv_search_$1 $LIBS"
+  $3
+else :
+  $4
+fi])
+
+
+
+dnl AC_CHECK_LIB(LIBRARY, FUNCTION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND
+dnl              [, OTHER-LIBRARIES]]])
+AC_DEFUN(AC_CHECK_LIB,
+[AC_MSG_CHECKING([for $2 in -l$1])
+dnl Use a cache variable name containing both the library and function name,
+dnl because the test really is for library $1 defining function $2, not
+dnl just for library $1.  Separate tests with the same $1 and different $2s
+dnl may have different results.
+ac_lib_var=`echo $1['_']$2 | sed 'y%./+-%__p_%'`
+AC_CACHE_VAL(ac_cv_lib_$ac_lib_var,
+[ac_save_LIBS="$LIBS"
+LIBS="-l$1 $5 $LIBS"
+AC_TRY_LINK(dnl
+ifelse(AC_LANG, [FORTRAN77], ,
+ifelse([$2], [main], , dnl Avoid conflicting decl of main.
+[/* Override any gcc2 internal prototype to avoid an error.  */
+]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+extern "C"
+#endif
+])dnl
+[/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $2();
+])),
+	    [$2()],
+	    eval "ac_cv_lib_$ac_lib_var=yes",
+	    eval "ac_cv_lib_$ac_lib_var=no")
+LIBS="$ac_save_LIBS"
+])dnl
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  ifelse([$3], ,
+[changequote(, )dnl
+  ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+changequote([, ])dnl
+  AC_DEFINE_UNQUOTED($ac_tr_lib)
+  LIBS="-l$1 $LIBS"
+], [$3])
+else
+  AC_MSG_RESULT(no)
+ifelse([$4], , , [$4
+])dnl
+fi
+])
+
+dnl AC_HAVE_LIBRARY(LIBRARY, [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND
+dnl                 [, OTHER-LIBRARIES]]])
+AC_DEFUN(AC_HAVE_LIBRARY,
+[AC_OBSOLETE([$0], [; instead use AC_CHECK_LIB])dnl
+changequote(<<, >>)dnl
+define(<<AC_LIB_NAME>>, dnl
+patsubst(patsubst($1, <<lib\([^\.]*\)\.a>>, <<\1>>), <<-l>>, <<>>))dnl
+define(<<AC_CV_NAME>>, ac_cv_lib_<<>>AC_LIB_NAME)dnl
+changequote([, ])dnl
+AC_MSG_CHECKING([for -l[]AC_LIB_NAME])
+AC_CACHE_VAL(AC_CV_NAME,
+[ac_save_LIBS="$LIBS"
+LIBS="-l[]AC_LIB_NAME[] $4 $LIBS"
+AC_TRY_LINK( , [main()], AC_CV_NAME=yes, AC_CV_NAME=no)
+LIBS="$ac_save_LIBS"
+])dnl
+AC_MSG_RESULT($AC_CV_NAME)
+if test "$AC_CV_NAME" = yes; then
+  ifelse([$2], ,
+[AC_DEFINE([HAVE_LIB]translit(AC_LIB_NAME, [a-z], [A-Z]))
+  LIBS="-l[]AC_LIB_NAME[] $LIBS"
+], [$2])
+ifelse([$3], , , [else
+  $3
+])dnl
+fi
+undefine([AC_LIB_NAME])dnl
+undefine([AC_CV_NAME])dnl
+])
+
+
+dnl ### Examining declarations
+
+
+dnl AC_TRY_CPP(INCLUDES, [ACTION-IF-TRUE [, ACTION-IF-FALSE]])
+AC_DEFUN(AC_TRY_CPP,
+[AC_REQUIRE_CPP()dnl
+cat > conftest.$ac_ext <<EOF
+[#]line __oline__ "configure"
+#include "confdefs.h"
+[$1]
+EOF
+dnl Capture the stderr of cpp.  eval is necessary to expand ac_cpp.
+dnl We used to copy stderr to stdout and capture it in a variable, but
+dnl that breaks under sh -x, which writes compile commands starting
+dnl with ` +' to stderr in eval and subshells.
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+AC_TRY_EVAL(ac_try)
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  ifelse([$2], , :, [rm -rf conftest*
+  $2])
+else
+  echo "$ac_err" >&AC_FD_CC
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat conftest.$ac_ext >&AC_FD_CC
+ifelse([$3], , , [  rm -rf conftest*
+  $3
+])dnl
+fi
+rm -f conftest*])
+
+dnl AC_EGREP_HEADER(PATTERN, HEADER-FILE, ACTION-IF-FOUND [,
+dnl                 ACTION-IF-NOT-FOUND])
+AC_DEFUN(AC_EGREP_HEADER,
+[AC_EGREP_CPP([$1], [#include <$2>], [$3], [$4])])
+
+dnl Because this macro is used by AC_PROG_GCC_TRADITIONAL, which must
+dnl come early, it is not included in AC_BEFORE checks.
+dnl AC_EGREP_CPP(PATTERN, PROGRAM, [ACTION-IF-FOUND [,
+dnl              ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_EGREP_CPP,
+[AC_REQUIRE_CPP()dnl
+cat > conftest.$ac_ext <<EOF
+[#]line __oline__ "configure"
+#include "confdefs.h"
+[$2]
+EOF
+dnl eval is necessary to expand ac_cpp.
+dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
+if (eval "$ac_cpp conftest.$ac_ext") 2>&AC_FD_CC |
+dnl Prevent m4 from eating character classes:
+changequote(, )dnl
+  egrep "$1" >/dev/null 2>&1; then
+changequote([, ])dnl
+  ifelse([$3], , :, [rm -rf conftest*
+  $3])
+ifelse([$4], , , [else
+  rm -rf conftest*
+  $4
+])dnl
+fi
+rm -f conftest*
+])
+
+
+dnl ### Examining syntax
+
+
+dnl AC_TRY_COMPILE(INCLUDES, FUNCTION-BODY,
+dnl             [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_TRY_COMPILE,
+[cat > conftest.$ac_ext <<EOF
+ifelse(AC_LANG, [FORTRAN77],
+[      program main
+[$2]
+      end],
+[dnl This sometimes fails to find confdefs.h, for some reason.
+dnl [#]line __oline__ "[$]0"
+[#]line __oline__ "configure"
+#include "confdefs.h"
+[$1]
+int main() {
+[$2]
+; return 0; }
+])EOF
+if AC_TRY_EVAL(ac_compile); then
+  ifelse([$3], , :, [rm -rf conftest*
+  $3])
+else
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat conftest.$ac_ext >&AC_FD_CC
+ifelse([$4], , , [  rm -rf conftest*
+  $4
+])dnl
+fi
+rm -f conftest*])
+
+
+dnl ### Examining libraries
+
+
+dnl AC_COMPILE_CHECK(ECHO-TEXT, INCLUDES, FUNCTION-BODY,
+dnl                  ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
+AC_DEFUN(AC_COMPILE_CHECK,
+[AC_OBSOLETE([$0], [; instead use AC_TRY_COMPILE or AC_TRY_LINK, and AC_MSG_CHECKING and AC_MSG_RESULT])dnl
+ifelse([$1], , , [AC_CHECKING([for $1])
+])dnl
+AC_TRY_LINK([$2], [$3], [$4], [$5])
+])
+
+dnl AC_TRY_LINK(INCLUDES, FUNCTION-BODY,
+dnl             [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_TRY_LINK,
+[cat > conftest.$ac_ext <<EOF
+ifelse(AC_LANG, [FORTRAN77],
+[
+      program main
+      call [$2]
+      end
+],
+[dnl This sometimes fails to find confdefs.h, for some reason.
+dnl [#]line __oline__ "[$]0"
+[#]line __oline__ "configure"
+#include "confdefs.h"
+[$1]
+int main() {
+[$2]
+; return 0; }
+])EOF
+if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+  ifelse([$3], , :, [rm -rf conftest*
+  $3])
+else
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat conftest.$ac_ext >&AC_FD_CC
+ifelse([$4], , , [  rm -rf conftest*
+  $4
+])dnl
+fi
+rm -f conftest*])
+
+
+dnl ### Checking for run-time features
+
+
+dnl AC_TRY_RUN(PROGRAM, [ACTION-IF-TRUE [, ACTION-IF-FALSE
+dnl            [, ACTION-IF-CROSS-COMPILING]]])
+AC_DEFUN(AC_TRY_RUN,
+[if test "$cross_compiling" = yes; then
+  ifelse([$4], ,
+    [errprint(__file__:__line__: warning: [AC_TRY_RUN] called without default to allow cross compiling
+)dnl
+  AC_MSG_ERROR(can not run test program while cross compiling)],
+  [$4])
+else
+  AC_TRY_RUN_NATIVE([$1], [$2], [$3])
+fi
+])
+
+dnl Like AC_TRY_RUN but assumes a native-environment (non-cross) compiler.
+dnl AC_TRY_RUN_NATIVE(PROGRAM, [ACTION-IF-TRUE [, ACTION-IF-FALSE]])
+AC_DEFUN(AC_TRY_RUN_NATIVE,
+[cat > conftest.$ac_ext <<EOF
+[#]line __oline__ "configure"
+#include "confdefs.h"
+ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+extern "C" void exit(int);
+#endif
+])dnl
+[$1]
+EOF
+if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+dnl Don't remove the temporary files here, so they can be examined.
+  ifelse([$2], , :, [$2])
+else
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat conftest.$ac_ext >&AC_FD_CC
+ifelse([$3], , , [  rm -fr conftest*
+  $3
+])dnl
+fi
+rm -fr conftest*])
+
+
+dnl ### Checking for header files
+
+
+dnl AC_CHECK_HEADER(HEADER-FILE, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_CHECK_HEADER,
+[dnl Do the transliteration at runtime so arg 1 can be a shell variable.
+ac_safe=`echo "$1" | sed 'y%./+-%__p_%'`
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(ac_cv_header_$ac_safe,
+[AC_TRY_CPP([#include <$1>], eval "ac_cv_header_$ac_safe=yes",
+  eval "ac_cv_header_$ac_safe=no")])dnl
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  ifelse([$2], , :, [$2])
+else
+  AC_MSG_RESULT(no)
+ifelse([$3], , , [$3
+])dnl
+fi
+])
+
+dnl AC_CHECK_HEADERS(HEADER-FILE... [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_CHECK_HEADERS,
+[for ac_hdr in $1
+do
+AC_CHECK_HEADER($ac_hdr,
+[changequote(, )dnl
+  ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+changequote([, ])dnl
+  AC_DEFINE_UNQUOTED($ac_tr_hdr) $2], $3)dnl
+done
+])
+
+
+dnl ### Checking for the existence of files
+
+dnl AC_CHECK_FILE(FILE, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_CHECK_FILE,
+[AC_REQUIRE([AC_PROG_CC])
+dnl Do the transliteration at runtime so arg 1 can be a shell variable.
+ac_safe=`echo "$1" | sed 'y%./+-%__p_%'`
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(ac_cv_file_$ac_safe,
+[if test "$cross_compiling" = yes; then
+  errprint(__file__:__line__: warning: Cannot check for file existence when cross compiling
+)dnl
+  AC_MSG_ERROR(Cannot check for file existence when cross compiling)
+else
+  if test -r $1; then
+    eval "ac_cv_file_$ac_safe=yes"
+  else
+    eval "ac_cv_file_$ac_safe=no"
+  fi
+fi])dnl
+if eval "test \"`echo '$ac_cv_file_'$ac_safe`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  ifelse([$2], , :, [$2])
+else
+  AC_MSG_RESULT(no)
+ifelse([$3], , , [$3])
+fi
+])
+
+dnl AC_CHECK_FILES(FILE... [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_CHECK_FILES,
+[for ac_file in $1
+do
+AC_CHECK_FILE($ac_file,
+[changequote(, )dnl
+  ac_tr_file=HAVE_`echo $ac_file | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+changequote([, ])dnl
+  AC_DEFINE_UNQUOTED($ac_tr_file) $2], $3)dnl
+done
+])
+
+
+dnl ### Checking for library functions
+
+
+dnl AC_CHECK_FUNC(FUNCTION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_CHECK_FUNC,
+[AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(ac_cv_func_$1,
+[AC_TRY_LINK(
+dnl Don't include <ctype.h> because on OSF/1 3.0 it includes <sys/types.h>
+dnl which includes <sys/select.h> which contains a prototype for
+dnl select.  Similarly for bzero.
+[/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $1(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+extern "C"
+#endif
+])dnl
+[/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $1();
+], [
+/* 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
+$1();
+#endif
+], eval "ac_cv_func_$1=yes", eval "ac_cv_func_$1=no")])
+if eval "test \"`echo '$ac_cv_func_'$1`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  ifelse([$2], , :, [$2])
+else
+  AC_MSG_RESULT(no)
+ifelse([$3], , , [$3
+])dnl
+fi
+])
+
+dnl AC_CHECK_FUNCS(FUNCTION... [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN(AC_CHECK_FUNCS,
+[for ac_func in $1
+do
+AC_CHECK_FUNC($ac_func,
+[changequote(, )dnl
+  ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+changequote([, ])dnl
+  AC_DEFINE_UNQUOTED($ac_tr_func) $2], $3)dnl
+done
+])
+
+dnl AC_REPLACE_FUNCS(FUNCTION...)
+AC_DEFUN(AC_REPLACE_FUNCS,
+[AC_CHECK_FUNCS([$1], , [LIBOBJS="$LIBOBJS ${ac_func}.${ac_objext}"])
+AC_SUBST(LIBOBJS)dnl
+])
+
+
+dnl ### Checking compiler characteristics
+
+
+dnl AC_CHECK_SIZEOF(TYPE [, CROSS-SIZE])
+AC_DEFUN(AC_CHECK_SIZEOF,
+[changequote(<<, >>)dnl
+dnl The name to #define.
+define(<<AC_TYPE_NAME>>, translit(sizeof_$1, [a-z *], [A-Z_P]))dnl
+dnl The cache variable name.
+define(<<AC_CV_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl
+changequote([, ])dnl
+AC_MSG_CHECKING(size of $1)
+AC_CACHE_VAL(AC_CV_NAME,
+[AC_TRY_RUN([#include <stdio.h>
+main()
+{
+  FILE *f=fopen("conftestval", "w");
+  if (!f) exit(1);
+  fprintf(f, "%d\n", sizeof($1));
+  exit(0);
+}], AC_CV_NAME=`cat conftestval`, AC_CV_NAME=0, ifelse([$2], , , AC_CV_NAME=$2))])dnl
+AC_MSG_RESULT($AC_CV_NAME)
+AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME)
+undefine([AC_TYPE_NAME])dnl
+undefine([AC_CV_NAME])dnl
+])
+
+
+dnl ### Checking for typedefs
+
+
+dnl AC_CHECK_TYPE(TYPE, DEFAULT)
+AC_DEFUN(AC_CHECK_TYPE,
+[AC_REQUIRE([AC_HEADER_STDC])dnl
+AC_MSG_CHECKING(for $1)
+AC_CACHE_VAL(ac_cv_type_$1,
+[AC_EGREP_CPP(dnl
+changequote(<<,>>)dnl
+<<(^|[^a-zA-Z_0-9])$1[^a-zA-Z_0-9]>>dnl
+changequote([,]), [#include <sys/types.h>
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif], ac_cv_type_$1=yes, ac_cv_type_$1=no)])dnl
+AC_MSG_RESULT($ac_cv_type_$1)
+if test $ac_cv_type_$1 = no; then
+  AC_DEFINE($1, $2)
+fi
+])
+
+
+dnl ### Creating output files
+
+
+dnl AC_CONFIG_HEADER(HEADER-TO-CREATE ...)
+AC_DEFUN(AC_CONFIG_HEADER,
+[define(AC_LIST_HEADER, $1)])
+
+dnl Link each of the existing files SOURCE... to the corresponding
+dnl link name in DEST...
+dnl AC_LINK_FILES(SOURCE..., DEST...)
+AC_DEFUN(AC_LINK_FILES,
+[dnl
+define([AC_LIST_FILES], ifdef([AC_LIST_FILES], [AC_LIST_FILES ],)[$1])dnl
+define([AC_LIST_LINKS], ifdef([AC_LIST_LINKS], [AC_LIST_LINKS ],)[$2])])
+
+dnl Add additional commands for AC_OUTPUT to put into config.status.
+dnl Use diversions instead of macros so we can be robust in the
+dnl presence of commas in $1 and/or $2.
+dnl AC_OUTPUT_COMMANDS(EXTRA-CMDS, INIT-CMDS)
+AC_DEFUN(AC_OUTPUT_COMMANDS,
+[AC_DIVERT_PUSH(AC_DIVERSION_CMDS)dnl
+[$1]
+AC_DIVERT_POP()dnl
+AC_DIVERT_PUSH(AC_DIVERSION_ICMDS)dnl
+[$2]
+AC_DIVERT_POP()])
+
+dnl AC_CONFIG_SUBDIRS(DIR ...)
+AC_DEFUN(AC_CONFIG_SUBDIRS,
+[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+define([AC_LIST_SUBDIRS], ifdef([AC_LIST_SUBDIRS], [AC_LIST_SUBDIRS ],)[$1])dnl
+subdirs="AC_LIST_SUBDIRS"
+AC_SUBST(subdirs)dnl
+])
+
+dnl The big finish.
+dnl Produce config.status, config.h, and links; and configure subdirs.
+dnl AC_OUTPUT([FILE...] [, EXTRA-CMDS] [, INIT-CMDS])
+define(AC_OUTPUT,
+[trap '' 1 2 15
+AC_CACHE_SAVE
+trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# Any assignment to VPATH causes Sun make to only execute
+# the first set of double-colon rules, so remove it if not needed.
+# If there is a colon in the path, we need to keep it.
+if test "x$srcdir" = x.; then
+changequote(, )dnl
+  ac_vpsub='/^[ 	]*VPATH[ 	]*=[^:]*$/d'
+changequote([, ])dnl
+fi
+
+trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15
+
+ifdef([AC_LIST_HEADER], [DEFS=-DHAVE_CONFIG_H], [AC_OUTPUT_MAKE_DEFS()])
+
+# Without the "./", some shells look in PATH for config.status.
+: ${CONFIG_STATUS=./config.status}
+
+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 [$]ac_configure_args
+#
+# Compiler output produced by configure, useful for debugging
+# configure, is in ./config.log if it exists.
+
+changequote(, )dnl
+ac_cs_usage="Usage: $CONFIG_STATUS [--recheck] [--version] [--help]"
+changequote([, ])dnl
+for ac_option
+do
+  case "[\$]ac_option" in
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    echo "running [\$]{CONFIG_SHELL-/bin/sh} [$]0 [$]ac_configure_args --no-create --no-recursion"
+    exec [\$]{CONFIG_SHELL-/bin/sh} [$]0 [$]ac_configure_args --no-create --no-recursion ;;
+  -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
+    echo "$CONFIG_STATUS generated by autoconf version AC_ACVERSION"
+    exit 0 ;;
+  -help | --help | --hel | --he | --h)
+    echo "[\$]ac_cs_usage"; exit 0 ;;
+  *) echo "[\$]ac_cs_usage"; exit 1 ;;
+  esac
+done
+
+ac_given_srcdir=$srcdir
+ifdef([AC_PROVIDE_AC_PROG_INSTALL], [ac_given_INSTALL="$INSTALL"
+])dnl
+
+changequote(<<, >>)dnl
+ifdef(<<AC_LIST_HEADER>>,
+<<trap 'rm -fr `echo "$1 AC_LIST_HEADER" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15>>,
+<<trap 'rm -fr `echo "$1" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15>>)
+changequote([, ])dnl
+EOF
+cat >> $CONFIG_STATUS <<EOF
+
+AC_OUTPUT_FILES($1)
+ifdef([AC_LIST_HEADER], [AC_OUTPUT_HEADER(AC_LIST_HEADER)])dnl
+ifdef([AC_LIST_LINKS], [AC_OUTPUT_LINKS(AC_LIST_FILES, AC_LIST_LINKS)])dnl
+EOF
+cat >> $CONFIG_STATUS <<EOF
+undivert(AC_DIVERSION_ICMDS)dnl
+$3
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+undivert(AC_DIVERSION_CMDS)dnl
+$2
+exit 0
+EOF
+chmod +x $CONFIG_STATUS
+rm -fr confdefs* $ac_clean_files
+test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1
+dnl config.status should not do recursion.
+ifdef([AC_LIST_SUBDIRS], [AC_OUTPUT_SUBDIRS(AC_LIST_SUBDIRS)])dnl
+])dnl
+
+dnl Set the DEFS variable to the -D options determined earlier.
+dnl This is a subroutine of AC_OUTPUT.
+dnl It is called inside configure, outside of config.status.
+dnl AC_OUTPUT_MAKE_DEFS()
+define(AC_OUTPUT_MAKE_DEFS,
+[# Transform confdefs.h into DEFS.
+dnl Using a here document instead of a string reduces the quoting nightmare.
+# Protect against shell expansion while executing Makefile rules.
+# Protect against Makefile macro expansion.
+cat > conftest.defs <<\EOF
+changequote(<<, >>)dnl
+s%<<#define>> \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%-D\1=\2%g
+s%[ 	`~<<#>>$^&*(){}\\|;'"<>?]%\\&%g
+s%\[%\\&%g
+s%\]%\\&%g
+s%\$%$$%g
+changequote([, ])dnl
+EOF
+DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '`
+rm -f conftest.defs
+])
+
+dnl Do the variable substitutions to create the Makefiles or whatever.
+dnl This is a subroutine of AC_OUTPUT.  It is called inside an unquoted
+dnl here document whose contents are going into config.status, but
+dnl upon returning, the here document is being quoted.
+dnl AC_OUTPUT_FILES(FILE...)
+define(AC_OUTPUT_FILES,
+[# Protect against being on the right side of a sed subst in config.status.
+changequote(, )dnl
+sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g;
+ s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF
+changequote([, ])dnl
+dnl These here document variables are unquoted when configure runs
+dnl but quoted when config.status runs, so variables are expanded once.
+$ac_vpsub
+dnl Shell code in configure.in might set extrasub.
+$extrasub
+dnl Insert the sed substitutions of variables.
+undivert(AC_DIVERSION_SED)
+CEOF
+EOF
+
+cat >> $CONFIG_STATUS <<\EOF
+
+# Split the substitutions into bite-sized pieces for seds with
+# small command number limits, like on Digital OSF/1 and HP-UX.
+ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script.
+ac_file=1 # Number of current file.
+ac_beg=1 # First line for current file.
+ac_end=$ac_max_sed_cmds # Line after last line for current file.
+ac_more_lines=:
+ac_sed_cmds=""
+while $ac_more_lines; do
+  if test $ac_beg -gt 1; then
+    sed "1,${ac_beg}d; ${ac_end}q" conftest.subs > conftest.s$ac_file
+  else
+    sed "${ac_end}q" conftest.subs > conftest.s$ac_file
+  fi
+  if test ! -s conftest.s$ac_file; then
+    ac_more_lines=false
+    rm -f conftest.s$ac_file
+  else
+    if test -z "$ac_sed_cmds"; then
+      ac_sed_cmds="sed -f conftest.s$ac_file"
+    else
+      ac_sed_cmds="$ac_sed_cmds | sed -f conftest.s$ac_file"
+    fi
+    ac_file=`expr $ac_file + 1`
+    ac_beg=$ac_end
+    ac_end=`expr $ac_end + $ac_max_sed_cmds`
+  fi
+done
+if test -z "$ac_sed_cmds"; then
+  ac_sed_cmds=cat
+fi
+EOF
+
+cat >> $CONFIG_STATUS <<EOF
+
+CONFIG_FILES=\${CONFIG_FILES-"$1"}
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
+changequote(, )dnl
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case "$ac_file" in
+  *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
+       ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+  *) ac_file_in="${ac_file}.in" ;;
+  esac
+
+  # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
+
+  # Remove last slash and all that follows it.  Not all systems have dirname.
+  ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
+changequote([, ])dnl
+  if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
+    # The file is in a subdirectory.
+    test ! -d "$ac_dir" && mkdir "$ac_dir"
+    ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`"
+    # A "../" for each directory in $ac_dir_suffix.
+changequote(, )dnl
+    ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'`
+changequote([, ])dnl
+  else
+    ac_dir_suffix= ac_dots=
+  fi
+
+  case "$ac_given_srcdir" in
+  .)  srcdir=.
+      if test -z "$ac_dots"; then top_srcdir=.
+      else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;;
+  /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;;
+  *) # Relative path.
+    srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix"
+    top_srcdir="$ac_dots$ac_given_srcdir" ;;
+  esac
+
+ifdef([AC_PROVIDE_AC_PROG_INSTALL],
+[  case "$ac_given_INSTALL" in
+changequote(, )dnl
+  [/$]*) INSTALL="$ac_given_INSTALL" ;;
+changequote([, ])dnl
+  *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
+  esac
+])dnl
+
+  echo creating "$ac_file"
+  rm -f "$ac_file"
+  configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure."
+  case "$ac_file" in
+  *Makefile*) ac_comsub="1i\\
+# $configure_input" ;;
+  *) ac_comsub= ;;
+  esac
+
+  ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
+  sed -e "$ac_comsub
+s%@configure_input@%$configure_input%g
+s%@srcdir@%$srcdir%g
+s%@top_srcdir@%$top_srcdir%g
+ifdef([AC_PROVIDE_AC_PROG_INSTALL], [s%@INSTALL@%$INSTALL%g
+])dnl
+dnl The parens around the eval prevent an "illegal io" in Ultrix sh.
+" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file
+dnl This would break Makefile dependencies.
+dnl  if cmp -s $ac_file conftest.out 2>/dev/null; then
+dnl    echo "$ac_file is unchanged"
+dnl    rm -f conftest.out
+dnl   else
+dnl     rm -f $ac_file
+dnl    mv conftest.out $ac_file
+dnl  fi
+fi; done
+rm -f conftest.s*
+])
+
+dnl Create the config.h files from the config.h.in files.
+dnl This is a subroutine of AC_OUTPUT.  It is called inside a quoted
+dnl here document whose contents are going into config.status.
+dnl AC_OUTPUT_HEADER(HEADER-FILE...)
+define(AC_OUTPUT_HEADER,
+[changequote(<<, >>)dnl
+# These sed commands 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.
+#
+# ac_d sets the value in "#define NAME VALUE" lines.
+ac_dA='s%^\([ 	]*\)#\([ 	]*define[ 	][ 	]*\)'
+ac_dB='\([ 	][ 	]*\)[^ 	]*%\1#\2'
+ac_dC='\3'
+ac_dD='%g'
+# ac_u turns "#undef NAME" with trailing blanks into "#define NAME VALUE".
+ac_uA='s%^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+ac_uB='\([ 	]\)%\1#\2define\3'
+ac_uC=' '
+ac_uD='\4%g'
+# ac_e turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
+ac_eA='s%^\([ 	]*\)#\([ 	]*\)undef\([ 	][ 	]*\)'
+ac_eB='<<$>>%\1#\2define\3'
+ac_eC=' '
+ac_eD='%g'
+changequote([, ])dnl
+
+if test "${CONFIG_HEADERS+set}" != set; then
+EOF
+dnl Support passing AC_CONFIG_HEADER a value containing shell variables.
+cat >> $CONFIG_STATUS <<EOF
+  CONFIG_HEADERS="$1"
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+fi
+for ac_file in .. $CONFIG_HEADERS; do if test "x$ac_file" != x..; then
+changequote(, )dnl
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case "$ac_file" in
+  *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
+       ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+  *) ac_file_in="${ac_file}.in" ;;
+  esac
+changequote([, ])dnl
+
+  echo creating $ac_file
+
+  rm -f conftest.frag conftest.in conftest.out
+  ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
+  cat $ac_file_inputs > conftest.in
+
+EOF
+
+# Transform confdefs.h into a sed script conftest.vals that substitutes
+# the proper values into config.h.in to produce config.h.  And first:
+# Protect against being on the right side of a sed subst in config.status.
+# Protect against being in an unquoted here document in config.status.
+rm -f conftest.vals
+dnl Using a here document instead of a string reduces the quoting nightmare.
+dnl Putting comments in sed scripts is not portable.
+cat > conftest.hdr <<\EOF
+changequote(<<, >>)dnl
+s/[\\&%]/\\&/g
+s%[\\$`]%\\&%g
+s%<<#define>> \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD}%gp
+s%ac_d%ac_u%gp
+s%ac_u%ac_e%gp
+changequote([, ])dnl
+EOF
+sed -n -f conftest.hdr confdefs.h > conftest.vals
+rm -f conftest.hdr
+
+# This sed command replaces #undef 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.
+cat >> conftest.vals <<\EOF
+changequote(, )dnl
+s%^[ 	]*#[ 	]*undef[ 	][ 	]*[a-zA-Z_][a-zA-Z_0-9]*%/* & */%
+changequote([, ])dnl
+EOF
+
+# Break up conftest.vals because some shells have a limit on
+# the size of here documents, and old seds have small limits too.
+
+rm -f conftest.tail
+while :
+do
+  ac_lines=`grep -c . conftest.vals`
+  # grep -c gives empty output for an empty file on some AIX systems.
+  if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
+  # Write a limited-size here document to conftest.frag.
+  echo '  cat > conftest.frag <<CEOF' >> $CONFIG_STATUS
+  sed ${ac_max_here_lines}q conftest.vals >> $CONFIG_STATUS
+  echo 'CEOF
+  sed -f conftest.frag conftest.in > conftest.out
+  rm -f conftest.in
+  mv conftest.out conftest.in
+' >> $CONFIG_STATUS
+  sed 1,${ac_max_here_lines}d conftest.vals > conftest.tail
+  rm -f conftest.vals
+  mv conftest.tail conftest.vals
+done
+rm -f conftest.vals
+
+dnl Now back to your regularly scheduled config.status.
+cat >> $CONFIG_STATUS <<\EOF
+  rm -f conftest.frag conftest.h
+  echo "/* $ac_file.  Generated automatically by configure.  */" > conftest.h
+  cat conftest.in >> conftest.h
+  rm -f conftest.in
+  if cmp -s $ac_file conftest.h 2>/dev/null; then
+    echo "$ac_file is unchanged"
+    rm -f conftest.h
+  else
+    # Remove last slash and all that follows it.  Not all systems have dirname.
+  changequote(, )dnl
+    ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
+  changequote([, ])dnl
+    if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
+      # The file is in a subdirectory.
+      test ! -d "$ac_dir" && mkdir "$ac_dir"
+    fi
+    rm -f $ac_file
+    mv conftest.h $ac_file
+  fi
+fi; done
+
+])
+
+dnl This is a subroutine of AC_OUTPUT.  It is called inside a quoted
+dnl here document whose contents are going into config.status.
+dnl AC_OUTPUT_LINKS(SOURCE..., DEST...)
+define(AC_OUTPUT_LINKS,
+[EOF
+
+cat >> $CONFIG_STATUS <<EOF
+ac_sources="$1"
+ac_dests="$2"
+EOF
+
+cat >> $CONFIG_STATUS <<\EOF
+srcdir=$ac_given_srcdir
+while test -n "$ac_sources"; do
+  set $ac_dests; ac_dest=[$]1; shift; ac_dests=[$]*
+  set $ac_sources; ac_source=[$]1; shift; ac_sources=[$]*
+
+  echo "linking $srcdir/$ac_source to $ac_dest"
+
+  if test ! -r $srcdir/$ac_source; then
+    AC_MSG_ERROR($srcdir/$ac_source: File not found)
+  fi
+  rm -f $ac_dest
+
+  # Make relative symlinks.
+  # Remove last slash and all that follows it.  Not all systems have dirname.
+changequote(, )dnl
+  ac_dest_dir=`echo $ac_dest|sed 's%/[^/][^/]*$%%'`
+changequote([, ])dnl
+  if test "$ac_dest_dir" != "$ac_dest" && test "$ac_dest_dir" != .; then
+    # The dest file is in a subdirectory.
+    test ! -d "$ac_dest_dir" && mkdir "$ac_dest_dir"
+    ac_dest_dir_suffix="/`echo $ac_dest_dir|sed 's%^\./%%'`"
+    # A "../" for each directory in $ac_dest_dir_suffix.
+changequote(, )dnl
+    ac_dots=`echo $ac_dest_dir_suffix|sed 's%/[^/]*%../%g'`
+changequote([, ])dnl
+  else
+    ac_dest_dir_suffix= ac_dots=
+  fi
+
+  case "$srcdir" in
+changequote(, )dnl
+  [/$]*) ac_rel_source="$srcdir/$ac_source" ;;
+changequote([, ])dnl
+  *) ac_rel_source="$ac_dots$srcdir/$ac_source" ;;
+  esac
+
+  # Make a symlink if possible; otherwise try a hard link.
+  if ln -s $ac_rel_source $ac_dest 2>/dev/null ||
+    ln $srcdir/$ac_source $ac_dest; then :
+  else
+    AC_MSG_ERROR(can not link $ac_dest to $srcdir/$ac_source)
+  fi
+done
+])
+
+dnl This is a subroutine of AC_OUTPUT.
+dnl It is called after running config.status.
+dnl AC_OUTPUT_SUBDIRS(DIRECTORY...)
+define(AC_OUTPUT_SUBDIRS,
+[
+if test "$no_recursion" != yes; then
+
+  # Remove --cache-file and --srcdir arguments so they do not pile up.
+  ac_sub_configure_args=
+  ac_prev=
+  for ac_arg in $ac_configure_args; do
+    if test -n "$ac_prev"; then
+      ac_prev=
+      continue
+    fi
+    case "$ac_arg" in
+    -cache-file | --cache-file | --cache-fil | --cache-fi \
+    | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+      ac_prev=cache_file ;;
+    -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+    | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+      ;;
+    -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+      ac_prev=srcdir ;;
+    -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+      ;;
+    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    esac
+  done
+
+  for ac_config_dir in $1; do
+
+    # Do not complain, so a configure script can configure whichever
+    # parts of a large source tree are present.
+    if test ! -d $srcdir/$ac_config_dir; then
+      continue
+    fi
+
+    echo configuring in $ac_config_dir
+
+    case "$srcdir" in
+    .) ;;
+    *)
+      if test -d ./$ac_config_dir || mkdir ./$ac_config_dir; then :;
+      else
+        AC_MSG_ERROR(can not create `pwd`/$ac_config_dir)
+      fi
+      ;;
+    esac
+
+    ac_popdir=`pwd`
+    cd $ac_config_dir
+
+changequote(, )dnl
+      # A "../" for each directory in /$ac_config_dir.
+      ac_dots=`echo $ac_config_dir|sed -e 's%^\./%%' -e 's%[^/]$%&/%' -e 's%[^/]*/%../%g'`
+changequote([, ])dnl
+
+    case "$srcdir" in
+    .) # No --srcdir option.  We are building in place.
+      ac_sub_srcdir=$srcdir ;;
+    /*) # Absolute path.
+      ac_sub_srcdir=$srcdir/$ac_config_dir ;;
+    *) # Relative path.
+      ac_sub_srcdir=$ac_dots$srcdir/$ac_config_dir ;;
+    esac
+
+    # Check for guested configure; otherwise get Cygnus style configure.
+    if test -f $ac_sub_srcdir/configure; then
+      ac_sub_configure=$ac_sub_srcdir/configure
+    elif test -f $ac_sub_srcdir/configure.in; then
+      ac_sub_configure=$ac_configure
+    else
+      AC_MSG_WARN(no configuration information is in $ac_config_dir)
+      ac_sub_configure=
+    fi
+
+    # The recursion is here.
+    if test -n "$ac_sub_configure"; then
+
+      # Make the cache file name correct relative to the subdirectory.
+      case "$cache_file" in
+      /*) ac_sub_cache_file=$cache_file ;;
+      *) # Relative path.
+        ac_sub_cache_file="$ac_dots$cache_file" ;;
+      esac
+ifdef([AC_PROVIDE_AC_PROG_INSTALL],
+      [  case "$ac_given_INSTALL" in
+changequote(, )dnl
+        [/$]*) INSTALL="$ac_given_INSTALL" ;;
+changequote([, ])dnl
+        *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
+        esac
+])dnl
+
+      echo "[running ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file] --srcdir=$ac_sub_srcdir"
+      # The eval makes quoting arguments work.
+      if eval ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir
+      then :
+      else
+        AC_MSG_ERROR($ac_sub_configure failed for $ac_config_dir)
+      fi
+    fi
+
+    cd $ac_popdir
+  done
+fi
+])
diff -up firefox-78.8.0/build/autoconf/acoldnames.m4.D89554-autoconf1.diff firefox-78.8.0/build/autoconf/acoldnames.m4
--- firefox-78.8.0/build/autoconf/acoldnames.m4.D89554-autoconf1.diff	2021-02-25 13:48:13.604993478 +0100
+++ firefox-78.8.0/build/autoconf/acoldnames.m4	2021-02-25 13:48:13.604993478 +0100
@@ -0,0 +1,80 @@
+dnl Map old names of Autoconf macros to new regularized names.
+dnl This file is part of Autoconf.
+dnl Copyright (C) 1994 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., 59 Temple Place - Suite 330, Boston, MA
+dnl 02111-1307, USA.
+dnl
+dnl General macros.
+dnl
+define(AC_WARN, [indir([AC_MSG_WARN], $@)])dnl
+define(AC_ERROR, [indir([AC_MSG_ERROR], $@)])dnl
+AC_DEFUN(AC_PROGRAM_CHECK, [indir([AC_CHECK_PROG], $@)])dnl
+AC_DEFUN(AC_PROGRAM_PATH, [indir([AC_PATH_PROG], $@)])dnl
+AC_DEFUN(AC_PROGRAMS_CHECK, [indir([AC_CHECK_PROGS], $@)])dnl
+AC_DEFUN(AC_PROGRAMS_PATH, [indir([AC_PATH_PROGS], $@)])dnl
+AC_DEFUN(AC_PREFIX, [indir([AC_PREFIX_PROGRAM], $@)])dnl
+AC_DEFUN(AC_HEADER_EGREP, [indir([AC_EGREP_HEADER], $@)])dnl
+AC_DEFUN(AC_PROGRAM_EGREP, [indir([AC_EGREP_CPP], $@)])dnl
+AC_DEFUN(AC_TEST_PROGRAM, [indir([AC_TRY_RUN], $@)])dnl
+AC_DEFUN(AC_TEST_CPP, [indir([AC_TRY_CPP], $@)])dnl
+AC_DEFUN(AC_HEADER_CHECK, [indir([AC_CHECK_HEADER], $@)])dnl
+AC_DEFUN(AC_FUNC_CHECK, [indir([AC_CHECK_FUNC], $@)])dnl
+AC_DEFUN(AC_HAVE_FUNCS, [indir([AC_CHECK_FUNCS], $@)])dnl
+AC_DEFUN(AC_HAVE_HEADERS, [indir([AC_CHECK_HEADERS], $@)])dnl
+AC_DEFUN(AC_SIZEOF_TYPE, [indir([AC_CHECK_SIZEOF], $@)])dnl
+dnl
+dnl Specific macros.
+dnl
+AC_DEFUN(AC_GCC_TRADITIONAL, [indir([AC_PROG_GCC_TRADITIONAL])])dnl
+AC_DEFUN(AC_MINUS_C_MINUS_O, [indir([AC_PROG_CC_C_O])])dnl
+AC_DEFUN(AC_SET_MAKE, [indir([AC_PROG_MAKE_SET])])dnl
+AC_DEFUN(AC_YYTEXT_POINTER, [indir([AC_DECL_YYTEXT])])dnl
+AC_DEFUN(AC_LN_S, [indir([AC_PROG_LN_S])])dnl
+AC_DEFUN(AC_STDC_HEADERS, [indir([AC_HEADER_STDC])])dnl
+AC_DEFUN(AC_MAJOR_HEADER, [indir([AC_HEADER_MAJOR])])dnl
+AC_DEFUN(AC_STAT_MACROS_BROKEN, [indir([AC_HEADER_STAT])])dnl
+AC_DEFUN(AC_SYS_SIGLIST_DECLARED, [indir([AC_DECL_SYS_SIGLIST])])dnl
+AC_DEFUN(AC_GETGROUPS_T, [indir([AC_TYPE_GETGROUPS])])dnl
+AC_DEFUN(AC_UID_T, [indir([AC_TYPE_UID_T])])dnl
+AC_DEFUN(AC_SIZE_T, [indir([AC_TYPE_SIZE_T])])dnl
+AC_DEFUN(AC_PID_T, [indir([AC_TYPE_PID_T])])dnl
+AC_DEFUN(AC_OFF_T, [indir([AC_TYPE_OFF_T])])dnl
+AC_DEFUN(AC_MODE_T, [indir([AC_TYPE_MODE_T])])dnl
+AC_DEFUN(AC_RETSIGTYPE, [indir([AC_TYPE_SIGNAL])])dnl
+AC_DEFUN(AC_MMAP, [indir([AC_FUNC_MMAP])])dnl
+AC_DEFUN(AC_VPRINTF, [indir([AC_FUNC_VPRINTF])])dnl
+AC_DEFUN(AC_VFORK, [indir([AC_FUNC_VFORK])])dnl
+AC_DEFUN(AC_WAIT3, [indir([AC_FUNC_WAIT3])])dnl
+AC_DEFUN(AC_ALLOCA, [indir([AC_FUNC_ALLOCA])])dnl
+AC_DEFUN(AC_GETLOADAVG, [indir([AC_FUNC_GETLOADAVG])])dnl
+AC_DEFUN(AC_UTIME_NULL, [indir([AC_FUNC_UTIME_NULL])])dnl
+AC_DEFUN(AC_STRCOLL, [indir([AC_FUNC_STRCOLL])])dnl
+AC_DEFUN(AC_SETVBUF_REVERSED, [indir([AC_FUNC_SETVBUF_REVERSED])])dnl
+AC_DEFUN(AC_TIME_WITH_SYS_TIME, [indir([AC_HEADER_TIME])])dnl
+AC_DEFUN(AC_TIMEZONE, [indir([AC_STRUCT_TIMEZONE])])dnl
+AC_DEFUN(AC_ST_BLOCKS, [indir([AC_STRUCT_ST_BLOCKS])])dnl
+AC_DEFUN(AC_ST_BLKSIZE, [indir([AC_STRUCT_ST_BLKSIZE])])dnl
+AC_DEFUN(AC_ST_RDEV, [indir([AC_STRUCT_ST_RDEV])])dnl
+AC_DEFUN(AC_CROSS_CHECK, [indir([AC_C_CROSS])])dnl
+AC_DEFUN(AC_CHAR_UNSIGNED, [indir([AC_C_CHAR_UNSIGNED])])dnl
+AC_DEFUN(AC_LONG_DOUBLE, [indir([AC_C_LONG_DOUBLE])])dnl
+AC_DEFUN(AC_WORDS_BIGENDIAN, [indir([AC_C_BIGENDIAN])])dnl
+AC_DEFUN(AC_INLINE, [indir([AC_C_INLINE])])dnl
+AC_DEFUN(AC_CONST, [indir([AC_C_CONST])])dnl
+AC_DEFUN(AC_LONG_FILE_NAMES, [indir([AC_SYS_LONG_FILE_NAMES])])dnl
+AC_DEFUN(AC_RESTARTABLE_SYSCALLS, [indir([AC_SYS_RESTARTABLE_SYSCALLS])])dnl
+AC_DEFUN(AC_FIND_X, [indir([AC_PATH_X])])dnl
+AC_DEFUN(AC_FIND_XTRA, [indir([AC_PATH_XTRA])])dnl
diff -up firefox-78.8.0/build/autoconf/acspecific.m4.D89554-autoconf1.diff firefox-78.8.0/build/autoconf/acspecific.m4
--- firefox-78.8.0/build/autoconf/acspecific.m4.D89554-autoconf1.diff	2021-02-25 13:48:13.605993481 +0100
+++ firefox-78.8.0/build/autoconf/acspecific.m4	2021-02-25 13:48:13.605993481 +0100
@@ -0,0 +1,2758 @@
+dnl Macros that test for specific features.
+dnl This file is part of Autoconf.
+dnl Copyright (C) 1992, 93, 94, 95, 96, 1998 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., 59 Temple Place - Suite 330, Boston, MA
+dnl 02111-1307, USA.
+dnl
+dnl As a special exception, the Free Software Foundation gives unlimited
+dnl permission to copy, distribute and modify the configure scripts that
+dnl are the output of Autoconf.  You need not follow the terms of the GNU
+dnl General Public License when using or distributing such scripts, even
+dnl though portions of the text of Autoconf appear in them.  The GNU
+dnl General Public License (GPL) does govern all other use of the material
+dnl that constitutes the Autoconf program.
+dnl
+dnl Certain portions of the Autoconf source text are designed to be copied
+dnl (in certain cases, depending on the input) into the output of
+dnl Autoconf.  We call these the "data" portions.  The rest of the Autoconf
+dnl source text consists of comments plus executable code that decides which
+dnl of the data portions to output in any given case.  We call these
+dnl comments and executable code the "non-data" portions.  Autoconf never
+dnl copies any of the non-data portions into its output.
+dnl
+dnl This special exception to the GPL applies to versions of Autoconf
+dnl released by the Free Software Foundation.  When you make and
+dnl distribute a modified version of Autoconf, you may extend this special
+dnl exception to the GPL to apply to your modified version as well, *unless*
+dnl your modified version has the potential to copy into its output some
+dnl of the text that was the non-data portion of the version that you started
+dnl with.  (In other words, unless your change moves or copies text from
+dnl the non-data portions to the data portions.)  If your modification has
+dnl such potential, you must delete any notice of this special exception
+dnl to the GPL from your modified version.
+dnl
+dnl Written by David MacKenzie, with help from
+dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
+dnl Roland McGrath, Noah Friedman, david d zuhn, and many others.
+
+
+dnl ### Checks for programs
+
+
+dnl Check whether to use -n, \c, or newline-tab to separate
+dnl checking messages from result messages.
+dnl Idea borrowed from dist 3.0.
+dnl Internal use only.
+AC_DEFUN(AC_PROG_ECHO_N,
+[if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
+  # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
+  if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
+    ac_n= ac_c='
+' ac_t='	'
+  else
+    ac_n=-n ac_c= ac_t=
+  fi
+else
+  ac_n= ac_c='\c' ac_t=
+fi
+])
+
+AC_DEFUN(AC_PROG_CC,
+[AC_BEFORE([$0], [AC_PROG_CPP])dnl
+AC_CHECK_PROG(CC, gcc, gcc)
+if test -z "$CC"; then
+  AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
+  if test -z "$CC"; then
+    case "`uname -s`" in
+    *win32* | *WIN32*)
+      AC_CHECK_PROG(CC, cl, cl) ;;
+    esac
+  fi
+  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
+fi
+
+AC_PROG_CC_WORKS
+AC_PROG_CC_GNU
+
+if test $ac_cv_prog_gcc = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+
+dnl Check whether -g works, even if CFLAGS is set, in case the package
+dnl plays around with CFLAGS (such as to build both debugging and
+dnl normal versions of a library), tasteless as that idea is.
+ac_test_CFLAGS="${CFLAGS+set}"
+ac_save_CFLAGS="$CFLAGS"
+CFLAGS=
+AC_PROG_CC_G
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS="$ac_save_CFLAGS"
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+])
+
+AC_DEFUN(AC_PROG_CXX,
+[AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
+AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++ cl, gcc)
+
+AC_PROG_CXX_WORKS
+AC_PROG_CXX_GNU
+
+if test $ac_cv_prog_gxx = yes; then
+  GXX=yes
+else
+  GXX=
+fi
+
+dnl Check whether -g works, even if CXXFLAGS is set, in case the package
+dnl plays around with CXXFLAGS (such as to build both debugging and
+dnl normal versions of a library), tasteless as that idea is.
+ac_test_CXXFLAGS="${CXXFLAGS+set}"
+ac_save_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS=
+AC_PROG_CXX_G
+if test "$ac_test_CXXFLAGS" = set; then
+  CXXFLAGS="$ac_save_CXXFLAGS"
+elif test $ac_cv_prog_cxx_g = yes; then
+  if test "$GXX" = yes; then
+    CXXFLAGS="-g -O2"
+  else
+    CXXFLAGS="-g"
+  fi
+else
+  if test "$GXX" = yes; then
+    CXXFLAGS="-O2"
+  else
+    CXXFLAGS=
+  fi
+fi
+])
+
+dnl Determine a Fortran 77 compiler to use.  If `F77' is not already set
+dnl in the environment, check for `g77', `f77' and `f2c', in that order.
+dnl Set the output variable `F77' to the name of the compiler found.
+dnl 
+dnl If using `g77' (the GNU Fortran 77 compiler), then `AC_PROG_F77'
+dnl will set the shell variable `G77' to `yes', and empty otherwise.  If
+dnl the output variable `FFLAGS' was not already set in the environment,
+dnl then set it to `-g -02' for `g77' (or `-O2' where `g77' does not
+dnl accept `-g').  Otherwise, set `FFLAGS' to `-g' for all other Fortran
+dnl 77 compilers.
+dnl 
+dnl AC_PROG_F77()
+AC_DEFUN(AC_PROG_F77,
+[AC_BEFORE([$0], [AC_PROG_CPP])dnl
+if test -z "$F77"; then
+  AC_CHECK_PROGS(F77, g77 f77 f2c)
+    test -z "$F77" && AC_MSG_ERROR([no acceptable Fortran 77 compiler found in \$PATH])
+fi
+
+AC_PROG_F77_WORKS
+AC_PROG_F77_GNU
+
+if test $ac_cv_prog_g77 = yes; then
+  G77=yes
+dnl Check whether -g works, even if FFLAGS is set, in case the package
+dnl plays around with FFLAGS (such as to build both debugging and
+dnl normal versions of a library), tasteless as that idea is.
+  ac_test_FFLAGS="${FFLAGS+set}"
+  ac_save_FFLAGS="$FFLAGS"
+  FFLAGS=
+  AC_PROG_F77_G
+  if test "$ac_test_FFLAGS" = set; then
+    FFLAGS="$ac_save_FFLAGS"
+  elif test $ac_cv_prog_f77_g = yes; then
+    FFLAGS="-g -O2"
+  else
+    FFLAGS="-O2"
+  fi
+else
+  G77=
+  test "${FFLAGS+set}" = set || FFLAGS="-g"
+fi
+])
+
+AC_DEFUN(AC_PROG_CC_WORKS,
+[AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works])
+AC_LANG_SAVE
+AC_LANG_C
+AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)
+AC_LANG_RESTORE
+AC_MSG_RESULT($ac_cv_prog_cc_works)
+if test $ac_cv_prog_cc_works = no; then
+  AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
+fi
+AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])
+AC_MSG_RESULT($ac_cv_prog_cc_cross)
+cross_compiling=$ac_cv_prog_cc_cross
+])
+
+AC_DEFUN(AC_PROG_CXX_WORKS,
+[AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works])
+AC_LANG_SAVE
+AC_LANG_CPLUSPLUS
+AC_TRY_COMPILER([int main(){return(0);}], ac_cv_prog_cxx_works, ac_cv_prog_cxx_cross)
+AC_LANG_RESTORE
+AC_MSG_RESULT($ac_cv_prog_cxx_works)
+if test $ac_cv_prog_cxx_works = no; then
+  AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.])
+fi
+AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler])
+AC_MSG_RESULT($ac_cv_prog_cxx_cross)
+cross_compiling=$ac_cv_prog_cxx_cross
+])
+
+dnl Test whether the Fortran 77 compiler can compile and link a trivial
+dnl Fortran program.  Also, test whether the Fortran 77 compiler is a
+dnl cross-compiler (which may realistically be the case if the Fortran
+dnl compiler is `g77').
+dnl 
+dnl AC_PROG_F77_WORKS()
+AC_DEFUN(AC_PROG_F77_WORKS,
+[AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) works])
+AC_LANG_SAVE
+AC_LANG_FORTRAN77
+AC_TRY_COMPILER(dnl
+[      program conftest
+      end
+], ac_cv_prog_f77_works, ac_cv_prog_f77_cross)
+AC_LANG_RESTORE
+AC_MSG_RESULT($ac_cv_prog_f77_works)
+if test $ac_cv_prog_f77_works = no; then
+  AC_MSG_ERROR([installation or configuration problem: Fortran 77 compiler cannot create executables.])
+fi
+AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) is a cross-compiler])
+AC_MSG_RESULT($ac_cv_prog_f77_cross)
+cross_compiling=$ac_cv_prog_f77_cross
+])
+
+AC_DEFUN(AC_PROG_CC_GNU,
+[AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
+[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
+cat > conftest.c <<EOF
+#ifdef __GNUC__
+  yes;
+#endif
+EOF
+if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
+  ac_cv_prog_gcc=yes
+else
+  ac_cv_prog_gcc=no
+fi])])
+
+AC_DEFUN(AC_PROG_CXX_GNU,
+[AC_CACHE_CHECK(whether we are using GNU C++, ac_cv_prog_gxx,
+[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
+cat > conftest.C <<EOF
+#ifdef __GNUC__
+  yes;
+#endif
+EOF
+if AC_TRY_COMMAND(${CXX-g++} -E conftest.C) | egrep yes >/dev/null 2>&1; then
+  ac_cv_prog_gxx=yes
+else
+  ac_cv_prog_gxx=no
+fi])])
+
+dnl Test whether for Fortran 77 compiler is `g77' (the GNU Fortran 77
+dnl Compiler).  This test depends on whether the Fortran 77 compiler can
+dnl do CPP pre-processing.
+dnl 
+dnl AC_PROG_F77_GNU()
+AC_DEFUN(AC_PROG_F77_GNU,
+[AC_CACHE_CHECK(whether we are using GNU Fortran 77, ac_cv_prog_g77,
+[cat > conftest.fpp <<EOF
+#ifdef __GNUC__
+  yes
+#endif
+EOF
+if AC_TRY_COMMAND($F77 -E conftest.fpp) | egrep yes >/dev/null 2>&1; then
+  ac_cv_prog_g77=yes
+else
+  ac_cv_prog_g77=no
+fi])])
+
+AC_DEFUN(AC_PROG_CC_G,
+[AC_CACHE_CHECK(whether ${CC-cc} accepts -g, ac_cv_prog_cc_g,
+[echo 'void f(){}' > conftest.c
+if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
+  ac_cv_prog_cc_g=yes
+else
+  ac_cv_prog_cc_g=no
+fi
+rm -f conftest*
+])])
+
+AC_DEFUN(AC_PROG_CXX_G,
+[AC_CACHE_CHECK(whether ${CXX-g++} accepts -g, ac_cv_prog_cxx_g,
+[echo 'void f(){}' > conftest.cc
+if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then
+  ac_cv_prog_cxx_g=yes
+else
+  ac_cv_prog_cxx_g=no
+fi
+rm -f conftest*
+])])
+
+dnl Test whether the Fortran 77 compiler can accept the `-g' option to
+dnl enable debugging.
+dnl 
+dnl AC_PROG_F77_G()
+AC_DEFUN(AC_PROG_F77_G,
+[AC_CACHE_CHECK(whether $F77 accepts -g, ac_cv_prog_f77_g,
+[cat > conftest.f << EOF
+       program conftest
+       end
+EOF
+if test -z "`$F77 -g -c conftest.f 2>&1`"; then
+  ac_cv_prog_f77_g=yes
+else
+  ac_cv_prog_f77_g=no
+fi
+rm -f conftest*
+])])
+
+AC_DEFUN(AC_PROG_GCC_TRADITIONAL,
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_PROG_CPP])dnl
+if test $ac_cv_prog_gcc = yes; then
+    AC_CACHE_CHECK(whether ${CC-cc} needs -traditional,
+      ac_cv_prog_gcc_traditional,
+[  ac_pattern="Autoconf.*'x'"
+  AC_EGREP_CPP($ac_pattern, [#include <sgtty.h>
+Autoconf TIOCGETP],
+  ac_cv_prog_gcc_traditional=yes, ac_cv_prog_gcc_traditional=no)
+
+  if test $ac_cv_prog_gcc_traditional = no; then
+    AC_EGREP_CPP($ac_pattern, [#include <termio.h>
+Autoconf TCGETA],
+    ac_cv_prog_gcc_traditional=yes)
+  fi])
+  if test $ac_cv_prog_gcc_traditional = yes; then
+    CC="$CC -traditional"
+  fi
+fi
+])
+
+AC_DEFUN(AC_PROG_CC_C_O,
+[if test "x$CC" != xcc; then
+  AC_MSG_CHECKING(whether $CC and cc understand -c and -o together)
+else
+  AC_MSG_CHECKING(whether cc understands -c and -o together)
+fi
+set dummy $CC; ac_cc="`echo [$]2 |
+changequote(, )dnl
+		       sed -e 's/[^a-zA-Z0-9_]/_/g' -e 's/^[0-9]/_/'`"
+changequote([, ])dnl
+AC_CACHE_VAL(ac_cv_prog_cc_${ac_cc}_c_o,
+[echo 'foo(){}' > conftest.c
+# Make sure it works both with $CC and with simple cc.
+# We do the test twice because some compilers refuse to overwrite an
+# existing .o file with -o, though they will create one.
+ac_try='${CC-cc} -c conftest.c -o conftest.o 1>&AC_FD_CC'
+if AC_TRY_EVAL(ac_try) &&
+   test -f conftest.o && AC_TRY_EVAL(ac_try);
+then
+  eval ac_cv_prog_cc_${ac_cc}_c_o=yes
+  if test "x$CC" != xcc; then
+    # Test first that cc exists at all.
+    if AC_TRY_COMMAND(cc -c conftest.c 1>&AC_FD_CC); then
+      ac_try='cc -c conftest.c -o conftest.o 1>&AC_FD_CC'
+      if AC_TRY_EVAL(ac_try) &&
+	 test -f conftest.o && AC_TRY_EVAL(ac_try);
+      then
+        # cc works too.
+        :
+      else
+        # cc exists but doesn't like -o.
+        eval ac_cv_prog_cc_${ac_cc}_c_o=no
+      fi
+    fi
+  fi
+else
+  eval ac_cv_prog_cc_${ac_cc}_c_o=no
+fi
+rm -f conftest*
+])dnl
+if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = yes"; then
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no)
+  AC_DEFINE(NO_MINUS_C_MINUS_O)
+fi
+])
+
+dnl Test if the Fortran 77 compiler accepts the options `-c' and `-o'
+dnl simultaneously, and define `F77_NO_MINUS_C_MINUS_O' if it does not.
+dnl
+dnl The usefulness of this macro is questionable, as I can't really see
+dnl why anyone would use it.  The only reason I include it is for
+dnl completeness, since a similar test exists for the C compiler.
+dnl 
+dnl AC_PROG_F77_C_O
+AC_DEFUN(AC_PROG_F77_C_O,
+[AC_BEFORE([$0], [AC_PROG_F77])dnl
+AC_MSG_CHECKING(whether $F77 understand -c and -o together)
+set dummy $F77; ac_f77="`echo [$]2 |
+changequote(, )dnl
+sed -e 's/[^a-zA-Z0-9_]/_/g' -e 's/^[0-9]/_/'`"
+changequote([, ])dnl
+AC_CACHE_VAL(ac_cv_prog_f77_${ac_f77}_c_o,
+[cat > conftest.f << EOF
+       program conftest
+       end
+EOF
+# We do the `AC_TRY_EVAL' test twice because some compilers refuse to
+# overwrite an existing `.o' file with `-o', although they will create
+# one.
+ac_try='$F77 $FFLAGS -c conftest.f -o conftest.o 1>&AC_FD_CC'
+if AC_TRY_EVAL(ac_try) && test -f conftest.o && AC_TRY_EVAL(ac_try); then
+  eval ac_cv_prog_f77_${ac_f77}_c_o=yes
+else
+  eval ac_cv_prog_f77_${ac_f77}_c_o=no
+fi
+rm -f conftest*
+])dnl
+if eval "test \"`echo '$ac_cv_prog_f77_'${ac_f77}_c_o`\" = yes"; then
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no)
+  AC_DEFINE(F77_NO_MINUS_C_MINUS_O)
+fi
+])
+
+dnl Define SET_MAKE to set ${MAKE} if make doesn't.
+AC_DEFUN(AC_PROG_MAKE_SET,
+[AC_MSG_CHECKING(whether ${MAKE-make} sets \${MAKE})
+set dummy ${MAKE-make}; ac_make=`echo "[$]2" | sed 'y%./+-%__p_%'`
+AC_CACHE_VAL(ac_cv_prog_make_${ac_make}_set,
+[cat > conftestmake <<\EOF
+all:
+	@echo 'ac_maketemp="${MAKE}"'
+EOF
+changequote(, )dnl
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=`
+changequote([, ])dnl
+if test -n "$ac_maketemp"; then
+  eval ac_cv_prog_make_${ac_make}_set=yes
+else
+  eval ac_cv_prog_make_${ac_make}_set=no
+fi
+rm -f conftestmake])dnl
+if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  SET_MAKE=
+else
+  AC_MSG_RESULT(no)
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+AC_SUBST([SET_MAKE])dnl
+])
+
+AC_DEFUN(AC_PROG_RANLIB,
+[AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)])
+
+dnl Check for mawk first since it's generally faster.
+AC_DEFUN(AC_PROG_AWK,
+[AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )])
+
+AC_DEFUN(AC_PROG_YACC,
+[AC_CHECK_PROGS(YACC, 'bison -y' byacc, yacc)])
+
+AC_DEFUN(AC_PROG_CPP,
+[AC_MSG_CHECKING(how to run the C preprocessor)
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+AC_CACHE_VAL(ac_cv_prog_CPP,
+[  # This must be in double quotes, not single quotes, because CPP may get
+  # substituted into the Makefile and "${CC-cc}" will confuse make.
+  CPP="${CC-cc} -E"
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp.
+dnl Use a header file that comes with gcc, so configuring glibc
+dnl with a fresh cross-compiler works.
+  AC_TRY_CPP([#include <assert.h>
+Syntax Error], ,
+  CPP="${CC-cc} -E -traditional-cpp"
+  AC_TRY_CPP([#include <assert.h>
+Syntax Error], ,
+  CPP="${CC-cc} -nologo -E"
+  AC_TRY_CPP([#include <assert.h>
+Syntax Error], , CPP=/lib/cpp)))
+  ac_cv_prog_CPP="$CPP"])dnl
+  CPP="$ac_cv_prog_CPP"
+else
+  ac_cv_prog_CPP="$CPP"
+fi
+AC_MSG_RESULT($CPP)
+AC_SUBST(CPP)dnl
+])
+
+AC_DEFUN(AC_PROG_CXXCPP,
+[AC_MSG_CHECKING(how to run the C++ preprocessor)
+if test -z "$CXXCPP"; then
+AC_CACHE_VAL(ac_cv_prog_CXXCPP,
+[AC_LANG_SAVE[]dnl
+AC_LANG_CPLUSPLUS[]dnl
+  CXXCPP="${CXX-g++} -E"
+  AC_TRY_CPP([#include <stdlib.h>], , CXXCPP=/lib/cpp)
+  ac_cv_prog_CXXCPP="$CXXCPP"
+AC_LANG_RESTORE[]dnl
+fi])dnl
+CXXCPP="$ac_cv_prog_CXXCPP"
+AC_MSG_RESULT($CXXCPP)
+AC_SUBST(CXXCPP)dnl
+])
+
+dnl Require finding the C or C++ preprocessor, whichever is the
+dnl current language.
+AC_DEFUN(AC_REQUIRE_CPP,
+[ifelse(AC_LANG, C, [AC_REQUIRE([AC_PROG_CPP])], [AC_REQUIRE([AC_PROG_CXXCPP])])])
+
+AC_DEFUN(AC_PROG_LEX,
+[AC_CHECK_PROG(LEX, flex, flex, lex)
+if test -z "$LEXLIB"
+then
+  case "$LEX" in
+  flex*) ac_lib=fl ;;
+  *) ac_lib=l ;;
+  esac
+  AC_CHECK_LIB($ac_lib, yywrap, LEXLIB="-l$ac_lib")
+fi
+AC_SUBST(LEXLIB)])
+
+dnl Check if lex declares yytext as a char * by default, not a char[].
+undefine([AC_DECL_YYTEXT])
+AC_DEFUN(AC_DECL_YYTEXT,
+[AC_REQUIRE_CPP()dnl
+AC_REQUIRE([AC_PROG_LEX])dnl
+AC_CACHE_CHECK(lex output file root, ac_cv_prog_lex_root,
+[# The minimal lex program is just a single line: %%.  But some broken lexes
+# (Solaris, I think it was) want two %% lines, so accommodate them.
+echo '%%
+%%' | $LEX
+if test -f lex.yy.c; then
+  ac_cv_prog_lex_root=lex.yy
+elif test -f lexyy.c; then
+  ac_cv_prog_lex_root=lexyy
+else
+  AC_MSG_ERROR(cannot find output from $LEX; giving up)
+fi])
+LEX_OUTPUT_ROOT=$ac_cv_prog_lex_root
+AC_SUBST(LEX_OUTPUT_ROOT)dnl
+
+AC_CACHE_CHECK(whether yytext is a pointer, ac_cv_prog_lex_yytext_pointer,
+[# POSIX says lex can declare yytext either as a pointer or an array; the
+# default is implementation-dependent. Figure out which it is, since
+# not all implementations provide the %pointer and %array declarations.
+ac_cv_prog_lex_yytext_pointer=no
+echo 'extern char *yytext;' >>$LEX_OUTPUT_ROOT.c
+ac_save_LIBS="$LIBS"
+LIBS="$LIBS $LEXLIB"
+AC_TRY_LINK(`cat $LEX_OUTPUT_ROOT.c`, , ac_cv_prog_lex_yytext_pointer=yes)
+LIBS="$ac_save_LIBS"
+rm -f "${LEX_OUTPUT_ROOT}.c"
+])
+dnl
+if test $ac_cv_prog_lex_yytext_pointer = yes; then
+  AC_DEFINE(YYTEXT_POINTER)
+fi
+])
+
+AC_DEFUN(AC_PROG_INSTALL,
+[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# ./install, which can be erroneously created by make from ./install.sh.
+AC_MSG_CHECKING(for a BSD compatible install)
+if test -z "$INSTALL"; then
+AC_CACHE_VAL(ac_cv_path_install,
+[  IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS=":"
+  for ac_dir in $PATH; do
+    # Account for people who put trailing slashes in PATH elements.
+    case "$ac_dir/" in
+    /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
+    *)
+      # OSF1 and SCO ODT 3.0 have their own names for install.
+      # Don't use installbsd from OSF since it installs stuff as root
+      # by default.
+      for ac_prog in ginstall scoinst install; do
+        if test -f $ac_dir/$ac_prog; then
+	  if test $ac_prog = install &&
+            grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  else
+	    ac_cv_path_install="$ac_dir/$ac_prog -c"
+	    break 2
+	  fi
+	fi
+      done
+      ;;
+    esac
+  done
+  IFS="$ac_save_IFS"
+])dnl
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL="$ac_cv_path_install"
+  else
+    # As a last resort, use the slow shell script.  We don't cache a
+    # path for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the path is relative.
+    INSTALL="$ac_install_sh"
+  fi
+fi
+dnl We do special magic for INSTALL instead of AC_SUBST, to get
+dnl relative paths right.
+AC_MSG_RESULT($INSTALL)
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+AC_SUBST(INSTALL_PROGRAM)dnl
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}'
+AC_SUBST(INSTALL_SCRIPT)dnl
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+AC_SUBST(INSTALL_DATA)dnl
+])
+
+AC_DEFUN(AC_PROG_LN_S,
+[AC_MSG_CHECKING(whether ln -s works)
+AC_CACHE_VAL(ac_cv_prog_LN_S,
+[rm -f conftestdata
+if ln -s X conftestdata 2>/dev/null
+then
+  rm -f conftestdata
+  ac_cv_prog_LN_S="ln -s"
+else
+  ac_cv_prog_LN_S=ln
+fi])dnl
+LN_S="$ac_cv_prog_LN_S"
+if test "$ac_cv_prog_LN_S" = "ln -s"; then
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no)
+fi
+AC_SUBST(LN_S)dnl
+])
+
+define(AC_RSH,
+[errprint(__file__:__line__: [$0] has been removed; replace it with equivalent code
+)m4exit(4)])
+
+
+dnl ### Checks for header files
+
+
+AC_DEFUN(AC_HEADER_STDC,
+[AC_REQUIRE_CPP()dnl
+AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
+[AC_TRY_CPP([#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>], ac_cv_header_stdc=yes, ac_cv_header_stdc=no)
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no)
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no)
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+AC_TRY_RUN([#include <ctype.h>
+#define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+#define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int main () { int i; for (i = 0; i < 256; i++)
+if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
+exit (0); }
+], , ac_cv_header_stdc=no, :)
+fi])
+if test $ac_cv_header_stdc = yes; then
+  AC_DEFINE(STDC_HEADERS)
+fi
+])
+
+AC_DEFUN(AC_UNISTD_H,
+[AC_OBSOLETE([$0], [; instead use AC_CHECK_HEADERS(unistd.h)])dnl
+AC_CHECK_HEADER(unistd.h, AC_DEFINE(HAVE_UNISTD_H))])
+
+AC_DEFUN(AC_USG,
+[AC_OBSOLETE([$0],
+  [; instead use AC_CHECK_HEADERS(string.h) and HAVE_STRING_H])dnl
+AC_MSG_CHECKING([for BSD string and memory functions])
+AC_TRY_LINK([#include <strings.h>], [rindex(0, 0); bzero(0, 0);],
+  [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no); AC_DEFINE(USG)])])
+
+
+dnl If memchr and the like aren't declared in <string.h>, include <memory.h>.
+dnl To avoid problems, don't check for gcc2 built-ins.
+AC_DEFUN(AC_MEMORY_H,
+[AC_OBSOLETE([$0], [; instead use AC_CHECK_HEADERS(memory.h) and HAVE_MEMORY_H])dnl
+AC_MSG_CHECKING(whether string.h declares mem functions)
+AC_EGREP_HEADER(memchr, string.h, ac_found=yes, ac_found=no)
+AC_MSG_RESULT($ac_found)
+if test $ac_found = no; then
+  AC_CHECK_HEADER(memory.h, [AC_DEFINE(NEED_MEMORY_H)])
+fi
+])
+
+AC_DEFUN(AC_HEADER_MAJOR,
+[AC_CACHE_CHECK(whether sys/types.h defines makedev,
+  ac_cv_header_sys_types_h_makedev,
+[AC_TRY_LINK([#include <sys/types.h>], [return makedev(0, 0);],
+  ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no)
+])
+
+if test $ac_cv_header_sys_types_h_makedev = no; then
+AC_CHECK_HEADER(sys/mkdev.h, [AC_DEFINE(MAJOR_IN_MKDEV)])
+
+  if test $ac_cv_header_sys_mkdev_h = no; then
+AC_CHECK_HEADER(sys/sysmacros.h, [AC_DEFINE(MAJOR_IN_SYSMACROS)])
+  fi
+fi
+])
+
+AC_DEFUN(AC_HEADER_DIRENT,
+[ac_header_dirent=no
+AC_CHECK_HEADERS_DIRENT(dirent.h sys/ndir.h sys/dir.h ndir.h,
+  [ac_header_dirent=$ac_hdr; break])
+# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
+if test $ac_header_dirent = dirent.h; then
+AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir")
+else
+AC_CHECK_LIB(x, opendir, LIBS="$LIBS -lx")
+fi
+])
+
+dnl Like AC_CHECK_HEADER, except also make sure that HEADER-FILE
+dnl defines the type `DIR'.  dirent.h on NextStep 3.2 doesn't.
+dnl AC_CHECK_HEADER_DIRENT(HEADER-FILE, ACTION-IF-FOUND)
+AC_DEFUN(AC_CHECK_HEADER_DIRENT,
+[ac_safe=`echo "$1" | sed 'y%./+-%__p_%'`
+AC_MSG_CHECKING([for $1 that defines DIR])
+AC_CACHE_VAL(ac_cv_header_dirent_$ac_safe,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <$1>], [DIR *dirp = 0;],
+  eval "ac_cv_header_dirent_$ac_safe=yes",
+  eval "ac_cv_header_dirent_$ac_safe=no")])dnl
+if eval "test \"`echo '$ac_cv_header_dirent_'$ac_safe`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  $2
+else
+  AC_MSG_RESULT(no)
+fi
+])
+
+dnl Like AC_CHECK_HEADERS, except succeed only for a HEADER-FILE that
+dnl defines `DIR'.
+dnl AC_CHECK_HEADERS_DIRENT(HEADER-FILE... [, ACTION])
+define(AC_CHECK_HEADERS_DIRENT,
+[for ac_hdr in $1
+do
+AC_CHECK_HEADER_DIRENT($ac_hdr,
+[changequote(, )dnl
+  ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+changequote([, ])dnl
+  AC_DEFINE_UNQUOTED($ac_tr_hdr) $2])dnl
+done])
+
+AC_DEFUN(AC_DIR_HEADER,
+[AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl
+ac_header_dirent=no
+for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
+  AC_CHECK_HEADER_DIRENT($ac_hdr, [ac_header_dirent=$ac_hdr; break])
+done
+
+case "$ac_header_dirent" in
+dirent.h) AC_DEFINE(DIRENT) ;;
+sys/ndir.h) AC_DEFINE(SYSNDIR) ;;
+sys/dir.h) AC_DEFINE(SYSDIR) ;;
+ndir.h) AC_DEFINE(NDIR) ;;
+esac
+
+AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
+[AC_TRY_RUN([#include <sys/types.h>
+#include <$ac_header_dirent>
+int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
+  ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes, ac_cv_func_closedir_void=yes)])
+if test $ac_cv_func_closedir_void = yes; then
+  AC_DEFINE(VOID_CLOSEDIR)
+fi
+])
+
+AC_DEFUN(AC_HEADER_STAT,
+[AC_CACHE_CHECK(whether stat file-mode macros are broken,
+  ac_cv_header_stat_broken,
+[AC_EGREP_CPP([You lose], [#include <sys/types.h>
+#include <sys/stat.h>
+
+#if defined(S_ISBLK) && defined(S_IFDIR)
+# if S_ISBLK (S_IFDIR)
+You lose.
+# endif
+#endif
+
+#if defined(S_ISBLK) && defined(S_IFCHR)
+# if S_ISBLK (S_IFCHR)
+You lose.
+# endif
+#endif
+
+#if defined(S_ISLNK) && defined(S_IFREG)
+# if S_ISLNK (S_IFREG)
+You lose.
+# endif
+#endif
+
+#if defined(S_ISSOCK) && defined(S_IFREG)
+# if S_ISSOCK (S_IFREG)
+You lose.
+# endif
+#endif
+], ac_cv_header_stat_broken=yes, ac_cv_header_stat_broken=no)])
+if test $ac_cv_header_stat_broken = yes; then
+  AC_DEFINE(STAT_MACROS_BROKEN)
+fi
+])
+
+AC_DEFUN(AC_DECL_SYS_SIGLIST,
+[AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h],
+  ac_cv_decl_sys_siglist,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <signal.h>
+/* NetBSD declares sys_siglist in unistd.h.  */
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif], [char *msg = *(sys_siglist + 1);],
+  ac_cv_decl_sys_siglist=yes, ac_cv_decl_sys_siglist=no)])
+if test $ac_cv_decl_sys_siglist = yes; then
+  AC_DEFINE(SYS_SIGLIST_DECLARED)
+fi
+])
+
+AC_DEFUN(AC_HEADER_SYS_WAIT,
+[AC_CACHE_CHECK([for sys/wait.h that is POSIX.1 compatible],
+  ac_cv_header_sys_wait_h,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/wait.h>
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
+#endif
+#ifndef WIFEXITED
+#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
+#endif], [int s;
+wait (&s);
+s = WIFEXITED (s) ? WEXITSTATUS (s) : 1;],
+ac_cv_header_sys_wait_h=yes, ac_cv_header_sys_wait_h=no)])
+if test $ac_cv_header_sys_wait_h = yes; then
+  AC_DEFINE(HAVE_SYS_WAIT_H)
+fi
+])
+
+
+dnl ### Checks for typedefs
+
+
+AC_DEFUN(AC_TYPE_GETGROUPS,
+[AC_REQUIRE([AC_TYPE_UID_T])dnl
+AC_CACHE_CHECK(type of array argument to getgroups, ac_cv_type_getgroups,
+[AC_TRY_RUN(
+changequote(<<, >>)dnl
+<<
+/* Thanks to Mike Rendell for this test.  */
+#include <sys/types.h>
+#define NGID 256
+#undef MAX
+#define MAX(x, y) ((x) > (y) ? (x) : (y))
+main()
+{
+  gid_t gidset[NGID];
+  int i, n;
+  union { gid_t gval; long lval; }  val;
+
+  val.lval = -1;
+  for (i = 0; i < NGID; i++)
+    gidset[i] = val.gval;
+  n = getgroups (sizeof (gidset) / MAX (sizeof (int), sizeof (gid_t)) - 1,
+                 gidset);
+  /* Exit non-zero if getgroups seems to require an array of ints.  This
+     happens when gid_t is short but getgroups modifies an array of ints.  */
+  exit ((n > 0 && gidset[n] != val.gval) ? 1 : 0);
+}
+>>,
+changequote([, ])dnl
+  ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int,
+  ac_cv_type_getgroups=cross)
+if test $ac_cv_type_getgroups = cross; then
+  dnl When we can't run the test program (we are cross compiling), presume
+  dnl that <unistd.h> has either an accurate prototype for getgroups or none.
+  dnl Old systems without prototypes probably use int.
+  AC_EGREP_HEADER([getgroups.*int.*gid_t], unistd.h,
+		  ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int)
+fi])
+AC_DEFINE_UNQUOTED(GETGROUPS_T, $ac_cv_type_getgroups)
+])
+
+AC_DEFUN(AC_TYPE_UID_T,
+[AC_CACHE_CHECK(for uid_t in sys/types.h, ac_cv_type_uid_t,
+[AC_EGREP_HEADER(uid_t, sys/types.h,
+  ac_cv_type_uid_t=yes, ac_cv_type_uid_t=no)])
+if test $ac_cv_type_uid_t = no; then
+  AC_DEFINE(uid_t, int)
+  AC_DEFINE(gid_t, int)
+fi
+])
+
+AC_DEFUN(AC_TYPE_SIZE_T,
+[AC_CHECK_TYPE(size_t, unsigned)])
+
+AC_DEFUN(AC_TYPE_PID_T,
+[AC_CHECK_TYPE(pid_t, int)])
+
+AC_DEFUN(AC_TYPE_OFF_T,
+[AC_CHECK_TYPE(off_t, long)])
+
+AC_DEFUN(AC_TYPE_MODE_T,
+[AC_CHECK_TYPE(mode_t, int)])
+
+dnl Note that identifiers starting with SIG are reserved by ANSI C.
+AC_DEFUN(AC_TYPE_SIGNAL,
+[AC_CACHE_CHECK([return type of signal handlers], ac_cv_type_signal,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <signal.h>
+#ifdef signal
+#undef signal
+#endif
+#ifdef __cplusplus
+extern "C" void (*signal (int, void (*)(int)))(int);
+#else
+void (*signal ()) ();
+#endif
+],
+[int i;], ac_cv_type_signal=void, ac_cv_type_signal=int)])
+AC_DEFINE_UNQUOTED(RETSIGTYPE, $ac_cv_type_signal)
+])
+
+
+dnl ### Checks for functions
+
+
+AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
+[AC_REQUIRE([AC_HEADER_DIRENT])dnl
+AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
+[AC_TRY_RUN([#include <sys/types.h>
+#include <$ac_header_dirent>
+int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
+  ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes, ac_cv_func_closedir_void=yes)])
+if test $ac_cv_func_closedir_void = yes; then
+  AC_DEFINE(CLOSEDIR_VOID)
+fi
+])
+
+AC_DEFUN(AC_FUNC_FNMATCH,
+[AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
+# Some versions of Solaris or SCO have a broken fnmatch function.
+# So we run a test program.  If we are cross-compiling, take no chance.
+# Thanks to John Oleynick and Franc,ois Pinard for this test.
+[AC_TRY_RUN([main() { exit (fnmatch ("a*", "abc", 0) != 0); }],
+ac_cv_func_fnmatch_works=yes, ac_cv_func_fnmatch_works=no,
+ac_cv_func_fnmatch_works=no)])
+if test $ac_cv_func_fnmatch_works = yes; then
+  AC_DEFINE(HAVE_FNMATCH)
+fi
+])
+
+AC_DEFUN(AC_FUNC_MMAP,
+[AC_CHECK_HEADERS(unistd.h)
+AC_CHECK_FUNCS(getpagesize)
+AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
+[AC_TRY_RUN([
+/* Thanks to Mike Haertel and Jim Avera for this test.
+   Here is a matrix of mmap possibilities:
+	mmap private not fixed
+	mmap private fixed at somewhere currently unmapped
+	mmap private fixed at somewhere already mapped
+	mmap shared not fixed
+	mmap shared fixed at somewhere currently unmapped
+	mmap shared fixed at somewhere already mapped
+   For private mappings, we should verify that changes cannot be read()
+   back from the file, nor mmap's back from the file at a different
+   address.  (There have been systems where private was not correctly
+   implemented like the infamous i386 svr4.0, and systems where the
+   VM page cache was not coherent with the filesystem buffer cache
+   like early versions of FreeBSD and possibly contemporary NetBSD.)
+   For shared mappings, we should conversely verify that changes get
+   propogated back to all the places they're supposed to be.
+
+   Grep wants private fixed already mapped.
+   The main things grep needs to know about mmap are:
+   * does it exist and is it safe to write into the mmap'd area
+   * how to use it (BSD variants)  */
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+/* This mess was copied from the GNU getpagesize.h.  */
+#ifndef HAVE_GETPAGESIZE
+# ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+# endif
+
+/* Assume that all systems that can run configure have sys/param.h.  */
+# ifndef HAVE_SYS_PARAM_H
+#  define HAVE_SYS_PARAM_H 1
+# endif
+
+# ifdef _SC_PAGESIZE
+#  define getpagesize() sysconf(_SC_PAGESIZE)
+# else /* no _SC_PAGESIZE */
+#  ifdef HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#   ifdef EXEC_PAGESIZE
+#    define getpagesize() EXEC_PAGESIZE
+#   else /* no EXEC_PAGESIZE */
+#    ifdef NBPG
+#     define getpagesize() NBPG * CLSIZE
+#     ifndef CLSIZE
+#      define CLSIZE 1
+#     endif /* no CLSIZE */
+#    else /* no NBPG */
+#     ifdef NBPC
+#      define getpagesize() NBPC
+#     else /* no NBPC */
+#      ifdef PAGESIZE
+#       define getpagesize() PAGESIZE
+#      endif /* PAGESIZE */
+#     endif /* no NBPC */
+#    endif /* no NBPG */
+#   endif /* no EXEC_PAGESIZE */
+#  else /* no HAVE_SYS_PARAM_H */
+#   define getpagesize() 8192	/* punt totally */
+#  endif /* no HAVE_SYS_PARAM_H */
+# endif /* no _SC_PAGESIZE */
+
+#endif /* no HAVE_GETPAGESIZE */
+
+#ifdef __cplusplus
+extern "C" { void *malloc(unsigned); }
+#else
+char *malloc();
+#endif
+
+int
+main()
+{
+	char *data, *data2, *data3;
+	int i, pagesize;
+	int fd;
+
+	pagesize = getpagesize();
+
+	/*
+	 * First, make a file with some known garbage in it.
+	 */
+	data = malloc(pagesize);
+	if (!data)
+		exit(1);
+	for (i = 0; i < pagesize; ++i)
+		*(data + i) = rand();
+	umask(0);
+	fd = creat("conftestmmap", 0600);
+	if (fd < 0)
+		exit(1);
+	if (write(fd, data, pagesize) != pagesize)
+		exit(1);
+	close(fd);
+
+	/*
+	 * Next, try to mmap the file at a fixed address which
+	 * already has something else allocated at it.  If we can,
+	 * also make sure that we see the same garbage.
+	 */
+	fd = open("conftestmmap", O_RDWR);
+	if (fd < 0)
+		exit(1);
+	data2 = malloc(2 * pagesize);
+	if (!data2)
+		exit(1);
+	data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
+	if (data2 != mmap(data2, pagesize, PROT_READ | PROT_WRITE,
+	    MAP_PRIVATE | MAP_FIXED, fd, 0L))
+		exit(1);
+	for (i = 0; i < pagesize; ++i)
+		if (*(data + i) != *(data2 + i))
+			exit(1);
+
+	/*
+	 * Finally, make sure that changes to the mapped area
+	 * do not percolate back to the file as seen by read().
+	 * (This is a bug on some variants of i386 svr4.0.)
+	 */
+	for (i = 0; i < pagesize; ++i)
+		*(data2 + i) = *(data2 + i) + 1;
+	data3 = malloc(pagesize);
+	if (!data3)
+		exit(1);
+	if (read(fd, data3, pagesize) != pagesize)
+		exit(1);
+	for (i = 0; i < pagesize; ++i)
+		if (*(data + i) != *(data3 + i))
+			exit(1);
+	close(fd);
+	unlink("conftestmmap");
+	exit(0);
+}
+], ac_cv_func_mmap_fixed_mapped=yes, ac_cv_func_mmap_fixed_mapped=no,
+ac_cv_func_mmap_fixed_mapped=no)])
+if test $ac_cv_func_mmap_fixed_mapped = yes; then
+  AC_DEFINE(HAVE_MMAP)
+fi
+])
+
+AC_DEFUN(AC_FUNC_GETPGRP,
+[AC_CACHE_CHECK(whether getpgrp takes no argument, ac_cv_func_getpgrp_void,
+[AC_TRY_RUN([
+/*
+ * If this system has a BSD-style getpgrp(),
+ * which takes a pid argument, exit unsuccessfully.
+ *
+ * Snarfed from Chet Ramey's bash pgrp.c test program
+ */
+#include <stdio.h>
+#include <sys/types.h>
+
+int     pid;
+int     pg1, pg2, pg3, pg4;
+int     ng, np, s, child;
+
+main()
+{
+        pid = getpid();
+        pg1 = getpgrp(0);
+        pg2 = getpgrp();
+        pg3 = getpgrp(pid);
+        pg4 = getpgrp(1);
+
+        /*
+         * If all of these values are the same, it's pretty sure that
+         * we're on a system that ignores getpgrp's first argument.
+         */
+        if (pg2 == pg4 && pg1 == pg3 && pg2 == pg3)
+                exit(0);
+
+        child = fork();
+        if (child < 0)
+                exit(1);
+        else if (child == 0) {
+                np = getpid();
+                /*
+                 * If this is Sys V, this will not work; pgrp will be
+                 * set to np because setpgrp just changes a pgrp to be
+                 * the same as the pid.
+                 */
+                setpgrp(np, pg1);
+                ng = getpgrp(0);        /* Same result for Sys V and BSD */
+                if (ng == pg1) {
+                        exit(1);
+                } else {
+                        exit(0);
+                }
+        } else {
+                wait(&s);
+                exit(s>>8);
+        }
+}
+], ac_cv_func_getpgrp_void=yes, ac_cv_func_getpgrp_void=no,
+   AC_MSG_ERROR(cannot check getpgrp if cross compiling))
+])
+if test $ac_cv_func_getpgrp_void = yes; then
+  AC_DEFINE(GETPGRP_VOID)
+fi
+])
+
+AC_DEFUN(AC_FUNC_SETPGRP,
+[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
+AC_TRY_RUN([
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/*
+ * If this system has a BSD-style setpgrp, which takes arguments, exit
+ * successfully.
+ */
+main()
+{
+    if (setpgrp(1,1) == -1)
+	exit(0);
+    else
+	exit(1);
+}
+], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
+   AC_MSG_ERROR(cannot check setpgrp if cross compiling))
+)
+if test $ac_cv_func_setpgrp_void = yes; then
+  AC_DEFINE(SETPGRP_VOID)
+fi
+])
+
+AC_DEFUN(AC_FUNC_VPRINTF,
+[AC_CHECK_FUNC(vprintf, AC_DEFINE(HAVE_VPRINTF))
+if test "$ac_cv_func_vprintf" != yes; then
+AC_CHECK_FUNC(_doprnt, AC_DEFINE(HAVE_DOPRNT))
+fi
+])
+
+AC_DEFUN(AC_FUNC_VFORK,
+[AC_REQUIRE([AC_TYPE_PID_T])dnl
+AC_CHECK_HEADER(vfork.h, AC_DEFINE(HAVE_VFORK_H))
+AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works,
+[AC_TRY_RUN([/* Thanks to Paul Eggert for this test.  */
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_VFORK_H
+#include <vfork.h>
+#endif
+/* On some sparc systems, changes by the child to local and incoming
+   argument registers are propagated back to the parent.
+   The compiler is told about this with #include <vfork.h>,
+   but some compilers (e.g. gcc -O) don't grok <vfork.h>.
+   Test for this by using a static variable whose address
+   is put into a register that is clobbered by the vfork.  */
+static
+#ifdef __cplusplus
+sparc_address_test (int arg)
+#else
+sparc_address_test (arg) int arg;
+#endif
+{
+  static pid_t child;
+  if (!child) {
+    child = vfork ();
+    if (child < 0) {
+      perror ("vfork");
+      _exit(2);
+    }
+    if (!child) {
+      arg = getpid();
+      write(-1, "", 0);
+      _exit (arg);
+    }
+  }
+}
+main() {
+  pid_t parent = getpid ();
+  pid_t child;
+
+  sparc_address_test ();
+
+  child = vfork ();
+
+  if (child == 0) {
+    /* Here is another test for sparc vfork register problems.
+       This test uses lots of local variables, at least
+       as many local variables as main has allocated so far
+       including compiler temporaries.  4 locals are enough for
+       gcc 1.40.3 on a Solaris 4.1.3 sparc, but we use 8 to be safe.
+       A buggy compiler should reuse the register of parent
+       for one of the local variables, since it will think that
+       parent can't possibly be used any more in this routine.
+       Assigning to the local variable will thus munge parent
+       in the parent process.  */
+    pid_t
+      p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
+      p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
+    /* Convince the compiler that p..p7 are live; otherwise, it might
+       use the same hardware register for all 8 local variables.  */
+    if (p != p1 || p != p2 || p != p3 || p != p4
+	|| p != p5 || p != p6 || p != p7)
+      _exit(1);
+
+    /* On some systems (e.g. IRIX 3.3),
+       vfork doesn't separate parent from child file descriptors.
+       If the child closes a descriptor before it execs or exits,
+       this munges the parent's descriptor as well.
+       Test for this by closing stdout in the child.  */
+    _exit(close(fileno(stdout)) != 0);
+  } else {
+    int status;
+    struct stat st;
+
+    while (wait(&status) != child)
+      ;
+    exit(
+	 /* Was there some problem with vforking?  */
+	 child < 0
+
+	 /* Did the child fail?  (This shouldn't happen.)  */
+	 || status
+
+	 /* Did the vfork/compiler bug occur?  */
+	 || parent != getpid()
+
+	 /* Did the file descriptor bug occur?  */
+	 || fstat(fileno(stdout), &st) != 0
+	 );
+  }
+}],
+ac_cv_func_vfork_works=yes, ac_cv_func_vfork_works=no, AC_CHECK_FUNC(vfork)
+ac_cv_func_vfork_works=$ac_cv_func_vfork)])
+if test $ac_cv_func_vfork_works = no; then
+  AC_DEFINE(vfork, fork)
+fi
+])
+
+AC_DEFUN(AC_FUNC_WAIT3,
+[AC_CACHE_CHECK(for wait3 that fills in rusage, ac_cv_func_wait3_rusage,
+[AC_TRY_RUN([#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <stdio.h>
+/* HP-UX has wait3 but does not fill in rusage at all.  */
+main() {
+  struct rusage r;
+  int i;
+  /* Use a field that we can force nonzero --
+     voluntary context switches.
+     For systems like NeXT and OSF/1 that don't set it,
+     also use the system CPU time.  And page faults (I/O) for Linux.  */
+  r.ru_nvcsw = 0;
+  r.ru_stime.tv_sec = 0;
+  r.ru_stime.tv_usec = 0;
+  r.ru_majflt = r.ru_minflt = 0;
+  switch (fork()) {
+  case 0: /* Child.  */
+    sleep(1); /* Give up the CPU.  */
+    _exit(0);
+  case -1: _exit(0); /* What can we do?  */
+  default: /* Parent.  */
+    wait3(&i, 0, &r);
+    sleep(2); /* Avoid "text file busy" from rm on fast HP-UX machines.  */
+    exit(r.ru_nvcsw == 0 && r.ru_majflt == 0 && r.ru_minflt == 0
+	 && r.ru_stime.tv_sec == 0 && r.ru_stime.tv_usec == 0);
+  }
+}], ac_cv_func_wait3_rusage=yes, ac_cv_func_wait3_rusage=no,
+ac_cv_func_wait3_rusage=no)])
+if test $ac_cv_func_wait3_rusage = yes; then
+  AC_DEFINE(HAVE_WAIT3)
+fi
+])
+
+AC_DEFUN(AC_FUNC_ALLOCA,
+[AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
+# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
+# for constant arguments.  Useless!
+AC_CACHE_CHECK([for working alloca.h], ac_cv_header_alloca_h,
+[AC_TRY_LINK([#include <alloca.h>], [char *p = alloca(2 * sizeof(int));],
+  ac_cv_header_alloca_h=yes, ac_cv_header_alloca_h=no)])
+if test $ac_cv_header_alloca_h = yes; then
+  AC_DEFINE(HAVE_ALLOCA_H)
+fi
+
+AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works,
+[AC_TRY_LINK([
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+#else
+# ifdef _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# else
+#  if HAVE_ALLOCA_H
+#   include <alloca.h>
+#  else
+#   ifdef _AIX
+ #pragma alloca
+#   else
+#    ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#    endif
+#   endif
+#  endif
+# endif
+#endif
+], [char *p = (char *) alloca(1);],
+  ac_cv_func_alloca_works=yes, ac_cv_func_alloca_works=no)])
+if test $ac_cv_func_alloca_works = yes; then
+  AC_DEFINE(HAVE_ALLOCA)
+fi
+
+if test $ac_cv_func_alloca_works = no; then
+  # The SVR3 libPW and SVR4 libucb both contain incompatible functions
+  # that cause trouble.  Some versions do not even contain alloca or
+  # contain a buggy version.  If you still want to use their alloca,
+  # use ar to extract alloca.o from them instead of compiling alloca.c.
+  ALLOCA=alloca.${ac_objext}
+  AC_DEFINE(C_ALLOCA)
+
+AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
+[AC_EGREP_CPP(webecray,
+[#if defined(CRAY) && ! defined(CRAY2)
+webecray
+#else
+wenotbecray
+#endif
+], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
+if test $ac_cv_os_cray = yes; then
+for ac_func in _getb67 GETB67 getb67; do
+  AC_CHECK_FUNC($ac_func, [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func)
+  break])
+done
+fi
+
+AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
+[AC_TRY_RUN([find_stack_direction ()
+{
+  static char *addr = 0;
+  auto char dummy;
+  if (addr == 0)
+    {
+      addr = &dummy;
+      return find_stack_direction ();
+    }
+  else
+    return (&dummy > addr) ? 1 : -1;
+}
+main ()
+{
+  exit (find_stack_direction() < 0);
+}], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1,
+  ac_cv_c_stack_direction=0)])
+AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
+fi
+AC_SUBST(ALLOCA)dnl
+])
+
+AC_DEFUN(AC_FUNC_GETLOADAVG,
+[ac_have_func=no # yes means we've found a way to get the load average.
+
+# Some systems with -lutil have (and need) -lkvm as well, some do not.
+# On Solaris, -lkvm requires nlist from -lelf, so check that first
+# to get the right answer into the cache.
+AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
+AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
+# Check for the 4.4BSD definition of getloadavg.
+AC_CHECK_LIB(util, getloadavg,
+  [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
+
+if test $ac_have_func = no; then
+  # There is a commonly available library for RS/6000 AIX.
+  # Since it is not a standard part of AIX, it might be installed locally.
+  ac_getloadavg_LIBS="$LIBS"; LIBS="-L/usr/local/lib $LIBS"
+  AC_CHECK_LIB(getloadavg, getloadavg,
+    LIBS="-lgetloadavg $LIBS", LIBS="$ac_getloadavg_LIBS")
+fi
+
+# Make sure it is really in the library, if we think we found it.
+AC_REPLACE_FUNCS(getloadavg)
+
+if test $ac_cv_func_getloadavg = yes; then
+  AC_DEFINE(HAVE_GETLOADAVG)
+  ac_have_func=yes
+else
+  # Figure out what our getloadavg.c needs.
+  ac_have_func=no
+  AC_CHECK_HEADER(sys/dg_sys_info.h,
+  [ac_have_func=yes; AC_DEFINE(DGUX)
+  AC_CHECK_LIB(dgc, dg_sys_info)])
+
+  # We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
+  # uses stabs), but it is still SVR4.  We cannot check for <elf.h> because
+  # Irix 4.0.5F has the header but not the library.
+  if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
+    ac_have_func=yes; AC_DEFINE(SVR4)
+  fi
+
+  if test $ac_have_func = no; then
+    AC_CHECK_HEADER(inq_stats/cpustats.h,
+    [ac_have_func=yes; AC_DEFINE(UMAX)
+    AC_DEFINE(UMAX4_3)])
+  fi
+
+  if test $ac_have_func = no; then
+    AC_CHECK_HEADER(sys/cpustats.h,
+    [ac_have_func=yes; AC_DEFINE(UMAX)])
+  fi
+
+  if test $ac_have_func = no; then
+    AC_CHECK_HEADERS(mach/mach.h)
+  fi
+
+  AC_CHECK_HEADER(nlist.h,
+  [AC_DEFINE(NLIST_STRUCT)
+  AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
+  [AC_TRY_COMPILE([#include <nlist.h>],
+  [struct nlist n; n.n_un.n_name = 0;],
+  ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
+  if test $ac_cv_struct_nlist_n_un = yes; then
+    AC_DEFINE(NLIST_NAME_UNION)
+  fi
+  ])dnl
+fi # Do not have getloadavg in system libraries.
+
+# Some definitions of getloadavg require that the program be installed setgid.
+dnl FIXME Don't hardwire the path of getloadavg.c in the top-level directory.
+AC_CACHE_CHECK(whether getloadavg requires setgid,
+  ac_cv_func_getloadavg_setgid,
+[AC_EGREP_CPP([Yowza Am I SETGID yet],
+[#include "$srcdir/getloadavg.c"
+#ifdef LDAV_PRIVILEGED
+Yowza Am I SETGID yet
+#endif],
+  ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
+if test $ac_cv_func_getloadavg_setgid = yes; then
+  NEED_SETGID=true; AC_DEFINE(GETLOADAVG_PRIVILEGED)
+else
+  NEED_SETGID=false
+fi
+AC_SUBST(NEED_SETGID)dnl
+
+if test $ac_cv_func_getloadavg_setgid = yes; then
+  AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
+[changequote(, )dnl
+  # On Solaris, /dev/kmem is a symlink.  Get info on the real file.
+  ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
+  # If we got an error (system does not support symlinks), try without -L.
+  test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
+  ac_cv_group_kmem=`echo $ac_ls_output \
+    | sed -ne 's/[ 	][ 	]*/ /g;
+	       s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\)  *.*/\1/;
+	       / /s/.* //;p;'`
+changequote([, ])dnl
+])
+  KMEM_GROUP=$ac_cv_group_kmem
+fi
+AC_SUBST(KMEM_GROUP)dnl
+])
+
+AC_DEFUN(AC_FUNC_UTIME_NULL,
+[AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null,
+[rm -f conftestdata; > conftestdata
+# Sequent interprets utime(file, 0) to mean use start of epoch.  Wrong.
+AC_TRY_RUN([#include <sys/types.h>
+#include <sys/stat.h>
+main() {
+struct stat s, t;
+exit(!(stat ("conftestdata", &s) == 0 && utime("conftestdata", (long *)0) == 0
+&& stat("conftestdata", &t) == 0 && t.st_mtime >= s.st_mtime
+&& t.st_mtime - s.st_mtime < 120));
+}], ac_cv_func_utime_null=yes, ac_cv_func_utime_null=no,
+  ac_cv_func_utime_null=no)
+rm -f core core.* *.core])
+if test $ac_cv_func_utime_null = yes; then
+  AC_DEFINE(HAVE_UTIME_NULL)
+fi
+])
+
+AC_DEFUN(AC_FUNC_STRCOLL,
+[AC_CACHE_CHECK(for working strcoll, ac_cv_func_strcoll_works,
+[AC_TRY_RUN([#include <string.h>
+main ()
+{
+  exit (strcoll ("abc", "def") >= 0 ||
+	strcoll ("ABC", "DEF") >= 0 ||
+	strcoll ("123", "456") >= 0);
+}], ac_cv_func_strcoll_works=yes, ac_cv_func_strcoll_works=no,
+ac_cv_func_strcoll_works=no)])
+if test $ac_cv_func_strcoll_works = yes; then
+  AC_DEFINE(HAVE_STRCOLL)
+fi
+])
+
+AC_DEFUN(AC_FUNC_SETVBUF_REVERSED,
+[AC_CACHE_CHECK(whether setvbuf arguments are reversed,
+  ac_cv_func_setvbuf_reversed,
+[AC_TRY_RUN([#include <stdio.h>
+/* If setvbuf has the reversed format, exit 0. */
+main () {
+  /* This call has the arguments reversed.
+     A reversed system may check and see that the address of main
+     is not _IOLBF, _IONBF, or _IOFBF, and return nonzero.  */
+  if (setvbuf(stdout, _IOLBF, (char *) main, BUFSIZ) != 0)
+    exit(1);
+  putc('\r', stdout);
+  exit(0);			/* Non-reversed systems segv here.  */
+}], ac_cv_func_setvbuf_reversed=yes, ac_cv_func_setvbuf_reversed=no)
+rm -f core core.* *.core])
+if test $ac_cv_func_setvbuf_reversed = yes; then
+  AC_DEFINE(SETVBUF_REVERSED)
+fi
+])
+
+AC_DEFUN(AC_FUNC_GETMNTENT,
+[# getmntent is in -lsun on Irix 4, -lseq on Dynix/PTX, -lgen on Unixware.
+AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
+  [AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS",
+    [AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
+AC_CHECK_FUNC(getmntent, [AC_DEFINE(HAVE_GETMNTENT)])])
+
+AC_DEFUN(AC_FUNC_STRFTIME,
+[AC_CHECK_FUNC(strftime, [AC_DEFINE(HAVE_STRFTIME)],
+[# strftime is in -lintl on SCO UNIX.
+AC_CHECK_LIB(intl, strftime, 
+[AC_DEFINE(HAVE_STRFTIME)
+LIBS="-lintl $LIBS"])])])
+
+AC_DEFUN(AC_FUNC_MEMCMP,
+[AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
+[AC_TRY_RUN([
+main()
+{
+  char c0 = 0x40, c1 = 0x80, c2 = 0x81;
+  exit(memcmp(&c0, &c2, 1) < 0 && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
+}
+], ac_cv_func_memcmp_clean=yes, ac_cv_func_memcmp_clean=no,
+ac_cv_func_memcmp_clean=no)])
+test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
+AC_SUBST(LIBOBJS)dnl
+])
+
+AC_DEFUN(AC_FUNC_SELECT_ARGTYPES,
+[AC_MSG_CHECKING([types of arguments for select()])
+ AC_CACHE_VAL(ac_cv_func_select_arg234,dnl
+ [AC_CACHE_VAL(ac_cv_func_select_arg1,dnl
+  [AC_CACHE_VAL(ac_cv_func_select_arg5,dnl
+   [for ac_cv_func_select_arg234 in 'fd_set *' 'int *' 'void *'; do
+     for ac_cv_func_select_arg1 in 'int' 'size_t' 'unsigned long' 'unsigned'; do
+      for ac_cv_func_select_arg5 in 'struct timeval *' 'const struct timeval *'; do
+       AC_TRY_COMPILE(dnl
+[#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+extern select ($ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5);],,dnl
+        [ac_not_found=no ; break 3],ac_not_found=yes)
+      done
+     done
+    done
+   ])dnl AC_CACHE_VAL
+  ])dnl AC_CACHE_VAL
+ ])dnl AC_CACHE_VAL
+ if test "$ac_not_found" = yes; then
+  ac_cv_func_select_arg1=int 
+  ac_cv_func_select_arg234='int *' 
+  ac_cv_func_select_arg5='struct timeval *'
+ fi
+ AC_MSG_RESULT([$ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5])
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1,$ac_cv_func_select_arg1)
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234,($ac_cv_func_select_arg234))
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5,($ac_cv_func_select_arg5))
+])
+
+
+dnl ### Checks for structure members
+
+
+AC_DEFUN(AC_HEADER_TIME,
+[AC_CACHE_CHECK([whether time.h and sys/time.h may both be included],
+  ac_cv_header_time,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>],
+[struct tm *tp;], ac_cv_header_time=yes, ac_cv_header_time=no)])
+if test $ac_cv_header_time = yes; then
+  AC_DEFINE(TIME_WITH_SYS_TIME)
+fi
+])
+
+AC_DEFUN(AC_STRUCT_TM,
+[AC_CACHE_CHECK([whether struct tm is in sys/time.h or time.h],
+  ac_cv_struct_tm,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <time.h>],
+[struct tm *tp; tp->tm_sec;],
+  ac_cv_struct_tm=time.h, ac_cv_struct_tm=sys/time.h)])
+if test $ac_cv_struct_tm = sys/time.h; then
+  AC_DEFINE(TM_IN_SYS_TIME)
+fi
+])
+
+AC_DEFUN(AC_STRUCT_TIMEZONE,
+[AC_REQUIRE([AC_STRUCT_TM])dnl
+AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;],
+  ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)])
+if test "$ac_cv_struct_tm_zone" = yes; then
+  AC_DEFINE(HAVE_TM_ZONE)
+else
+  AC_CACHE_CHECK(for tzname, ac_cv_var_tzname,
+[AC_TRY_LINK(
+changequote(<<, >>)dnl
+<<#include <time.h>
+#ifndef tzname /* For SGI.  */
+extern char *tzname[]; /* RS6000 and others reject char **tzname.  */
+#endif>>,
+changequote([, ])dnl
+[atoi(*tzname);], ac_cv_var_tzname=yes, ac_cv_var_tzname=no)])
+  if test $ac_cv_var_tzname = yes; then
+    AC_DEFINE(HAVE_TZNAME)
+  fi
+fi
+])
+
+AC_DEFUN(AC_STRUCT_ST_BLOCKS,
+[AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>], [struct stat s; s.st_blocks;],
+ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
+if test $ac_cv_struct_st_blocks = yes; then
+  AC_DEFINE(HAVE_ST_BLOCKS)
+else
+  LIBOBJS="$LIBOBJS fileblocks.${ac_objext}"
+fi
+AC_SUBST(LIBOBJS)dnl
+])
+
+AC_DEFUN(AC_STRUCT_ST_BLKSIZE,
+[AC_CACHE_CHECK([for st_blksize in struct stat], ac_cv_struct_st_blksize,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>], [struct stat s; s.st_blksize;],
+ac_cv_struct_st_blksize=yes, ac_cv_struct_st_blksize=no)])
+if test $ac_cv_struct_st_blksize = yes; then
+  AC_DEFINE(HAVE_ST_BLKSIZE)
+fi
+])
+
+AC_DEFUN(AC_STRUCT_ST_RDEV,
+[AC_CACHE_CHECK([for st_rdev in struct stat], ac_cv_struct_st_rdev,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>], [struct stat s; s.st_rdev;],
+ac_cv_struct_st_rdev=yes, ac_cv_struct_st_rdev=no)])
+if test $ac_cv_struct_st_rdev = yes; then
+  AC_DEFINE(HAVE_ST_RDEV)
+fi
+])
+
+
+dnl ### Checks for compiler characteristics
+
+
+AC_DEFUN(AC_C_CROSS,
+[AC_OBSOLETE([$0], [; it has been merged into AC_PROG_CC])])
+
+AC_DEFUN(AC_C_CHAR_UNSIGNED,
+[AC_CACHE_CHECK(whether char is unsigned, ac_cv_c_char_unsigned,
+[if test "$GCC" = yes; then
+  # GCC predefines this symbol on systems where it applies.
+AC_EGREP_CPP(yes,
+[#ifdef __CHAR_UNSIGNED__
+  yes
+#endif
+], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no)
+else
+AC_TRY_RUN(
+[/* volatile prevents gcc2 from optimizing the test away on sparcs.  */
+#if !defined(__STDC__) || __STDC__ != 1
+#define volatile
+#endif
+main() {
+  volatile char c = 255; exit(c < 0);
+}], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no)
+fi])
+if test $ac_cv_c_char_unsigned = yes && test "$GCC" != yes; then
+  AC_DEFINE(__CHAR_UNSIGNED__)
+fi
+])
+
+AC_DEFUN(AC_C_LONG_DOUBLE,
+[AC_CACHE_CHECK(for long double, ac_cv_c_long_double,
+[if test "$GCC" = yes; then
+  ac_cv_c_long_double=yes
+else
+AC_TRY_RUN([int main() {
+/* The Stardent Vistra knows sizeof(long double), but does not support it.  */
+long double foo = 0.0;
+/* On Ultrix 4.3 cc, long double is 4 and double is 8.  */
+exit(sizeof(long double) < sizeof(double)); }],
+ac_cv_c_long_double=yes, ac_cv_c_long_double=no)
+fi])
+if test $ac_cv_c_long_double = yes; then
+  AC_DEFINE(HAVE_LONG_DOUBLE)
+fi
+])
+
+AC_DEFUN(AC_INT_16_BITS,
+[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(int)])dnl
+AC_MSG_CHECKING(whether int is 16 bits)
+AC_TRY_RUN([main() { exit(sizeof(int) != 2); }],
+ [AC_MSG_RESULT(yes)
+ AC_DEFINE(INT_16_BITS)], AC_MSG_RESULT(no))
+])
+
+AC_DEFUN(AC_LONG_64_BITS,
+[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(long)])dnl
+AC_MSG_CHECKING(whether long int is 64 bits)
+AC_TRY_RUN([main() { exit(sizeof(long int) != 8); }],
+ [AC_MSG_RESULT(yes)
+ AC_DEFINE(LONG_64_BITS)], AC_MSG_RESULT(no))
+])
+
+AC_DEFUN(AC_C_BIGENDIAN,
+[AC_CACHE_CHECK(whether byte ordering is bigendian, ac_cv_c_bigendian,
+[ac_cv_c_bigendian=unknown
+# See if sys/param.h defines the BYTE_ORDER macro.
+AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/param.h>], [
+#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
+ bogus endian macros
+#endif], [# It does; now see whether it defined to BIG_ENDIAN or not.
+AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/param.h>], [
+#if BYTE_ORDER != BIG_ENDIAN
+ not big endian
+#endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
+if test $ac_cv_c_bigendian = unknown; then
+AC_TRY_RUN([main () {
+  /* Are we little or big endian?  From Harbison&Steele.  */
+  union
+  {
+    long l;
+    char c[sizeof (long)];
+  } u;
+  u.l = 1;
+  exit (u.c[sizeof (long) - 1] == 1);
+}], ac_cv_c_bigendian=no, ac_cv_c_bigendian=yes)
+fi])
+if test $ac_cv_c_bigendian = yes; then
+  AC_DEFINE(WORDS_BIGENDIAN)
+fi
+])
+
+dnl Do nothing if the compiler accepts the inline keyword.
+dnl Otherwise define inline to __inline__ or __inline if one of those work,
+dnl otherwise define inline to be empty.
+AC_DEFUN(AC_C_INLINE,
+[AC_CACHE_CHECK([for inline], ac_cv_c_inline,
+[ac_cv_c_inline=no
+for ac_kw in inline __inline__ __inline; do
+  AC_TRY_COMPILE(, [} $ac_kw foo() {], [ac_cv_c_inline=$ac_kw; break])
+done
+])
+case "$ac_cv_c_inline" in
+  inline | yes) ;;
+  no) AC_DEFINE(inline, ) ;;
+  *)  AC_DEFINE_UNQUOTED(inline, $ac_cv_c_inline) ;;
+esac
+])
+
+AC_DEFUN(AC_C_CONST,
+[dnl This message is consistent in form with the other checking messages,
+dnl and with the result message.
+AC_CACHE_CHECK([for working const], ac_cv_c_const,
+[AC_TRY_COMPILE(,
+changequote(<<, >>)dnl
+<<
+/* Ultrix mips cc rejects this.  */
+typedef int charset[2]; const charset x;
+/* SunOS 4.1.1 cc rejects this.  */
+char const *const *ccp;
+char **p;
+/* NEC SVR4.0.2 mips cc rejects this.  */
+struct point {int x, y;};
+static struct point const zero = {0,0};
+/* AIX XL C 1.02.0.0 rejects this.
+   It does not let you subtract one const X* pointer from another in an arm
+   of an if-expression whose if-part is not a constant expression */
+const char *g = "string";
+ccp = &g + (g ? g-g : 0);
+/* HPUX 7.0 cc rejects these. */
+++ccp;
+p = (char**) ccp;
+ccp = (char const *const *) p;
+{ /* SCO 3.2v4 cc rejects this.  */
+  char *t;
+  char const *s = 0 ? (char *) 0 : (char const *) 0;
+
+  *t++ = 0;
+}
+{ /* Someone thinks the Sun supposedly-ANSI compiler will reject this.  */
+  int x[] = {25, 17};
+  const int *foo = &x[0];
+  ++foo;
+}
+{ /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
+  typedef const int *iptr;
+  iptr p = 0;
+  ++p;
+}
+{ /* AIX XL C 1.02.0.0 rejects this saying
+     "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
+  struct s { int j; const int *ap[3]; };
+  struct s *b; b->j = 5;
+}
+{ /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
+  const int foo = 10;
+}
+>>,
+changequote([, ])dnl
+ac_cv_c_const=yes, ac_cv_c_const=no)])
+if test $ac_cv_c_const = no; then
+  AC_DEFINE(const, )
+fi
+])
+
+AC_DEFUN(AC_C_STRINGIZE, [
+AC_REQUIRE([AC_PROG_CPP])
+AC_MSG_CHECKING([for preprocessor stringizing operator])
+AC_CACHE_VAL(ac_cv_c_stringize,
+AC_EGREP_CPP([#teststring],[
+#define x(y) #y
+
+char *s = x(teststring);
+], ac_cv_c_stringize=no, ac_cv_c_stringize=yes))
+if test "${ac_cv_c_stringize}" = yes
+then
+        AC_DEFINE(HAVE_STRINGIZE)
+fi
+AC_MSG_RESULT([${ac_cv_c_stringize}])
+])dnl
+
+define(AC_ARG_ARRAY,
+[errprint(__file__:__line__: [$0] has been removed; don't do unportable things with arguments
+)m4exit(4)])
+
+dnl Check the object extension used by the compiler: typically .o or
+dnl .obj.  If this is called, some other behaviour will change,
+dnl determined by ac_objext.
+AC_DEFUN(AC_OBJEXT,
+[AC_MSG_CHECKING([for object suffix])
+AC_CACHE_VAL(ac_cv_objext,
+[rm -f conftest*
+echo 'int i = 1;' > conftest.$ac_ext
+if AC_TRY_EVAL(ac_compile); then
+  for ac_file in conftest.*; do
+    case $ac_file in
+    *.c) ;;
+    *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;;
+    esac
+  done
+else
+  AC_MSG_ERROR([installation or configuration problem; compiler does not work])
+fi
+rm -f conftest*])
+AC_MSG_RESULT($ac_cv_objext)
+OBJEXT=$ac_cv_objext
+ac_objext=$ac_cv_objext
+AC_SUBST(OBJEXT)])
+
+dnl Determine the linker flags (e.g. `-L' and `-l') for the Fortran 77
+dnl intrinsic and run-time libraries that are required to successfully
+dnl link a Fortran 77 program or shared library.  The output variable
+dnl FLIBS is set to these flags.
+dnl 
+dnl This macro is intended to be used in those situations when it is
+dnl necessary to mix, e.g. C++ and Fortran 77, source code into a single
+dnl program or shared library.
+dnl 
+dnl For example, if object files from a C++ and Fortran 77 compiler must
+dnl be linked together, then the C++ compiler/linker must be used for
+dnl linking (since special C++-ish things need to happen at link time
+dnl like calling global constructors, instantiating templates, enabling
+dnl exception support, etc.).
+dnl 
+dnl However, the Fortran 77 intrinsic and run-time libraries must be
+dnl linked in as well, but the C++ compiler/linker doesn't know how to
+dnl add these Fortran 77 libraries.  Hence, the macro
+dnl `AC_F77_LIBRARY_LDFLAGS' was created to determine these Fortran 77
+dnl libraries.
+dnl
+dnl This macro was packaged in its current form by Matthew D. Langston
+dnl <langston@SLAC.Stanford.EDU>.  However, nearly all of this macro
+dnl came from the `OCTAVE_FLIBS' macro in `octave-2.0.13/aclocal.m4',
+dnl and full credit should go to John W. Eaton for writing this
+dnl extremely useful macro.  Thank you John.
+dnl
+dnl AC_F77_LIBRARY_LDFLAGS()
+AC_DEFUN(AC_F77_LIBRARY_LDFLAGS,
+[AC_MSG_CHECKING([for Fortran 77 libraries])
+AC_REQUIRE([AC_PROG_F77])
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_CACHE_VAL(ac_cv_flibs,
+[changequote(, )dnl
+dnl Write a minimal program and compile it with -v.  I don't know what
+dnl to do if your compiler doesn't have -v...
+echo "      END" > conftest.f
+foutput=`${F77} -v -o conftest conftest.f 2>&1`
+dnl
+dnl The easiest thing to do for xlf output is to replace all the commas
+dnl with spaces.  Try to only do that if the output is really from xlf,
+dnl since doing that causes problems on other systems.
+dnl
+xlf_p=`echo $foutput | grep xlfentry`
+if test -n "$xlf_p"; then
+  foutput=`echo $foutput | sed 's/,/ /g'`
+fi
+dnl
+ld_run_path=`echo $foutput | \
+  sed -n -e 's/^.*LD_RUN_PATH *= *\([^ ]*\).*/\1/p'`
+dnl
+dnl We are only supposed to find this on Solaris systems...
+dnl Uh, the run path should be absolute, shouldn't it?
+dnl
+case "$ld_run_path" in
+  /*)
+    if test "$ac_cv_prog_gcc" = yes; then
+      ld_run_path="-Xlinker -R -Xlinker $ld_run_path"
+    else
+      ld_run_path="-R $ld_run_path"
+    fi
+  ;;
+  *)
+    ld_run_path=
+  ;;
+esac
+dnl
+flibs=
+lflags=
+dnl
+dnl If want_arg is set, we know we want the arg to be added to the list,
+dnl so we don't have to examine it.
+dnl
+want_arg=
+dnl
+for arg in $foutput; do
+  old_want_arg=$want_arg
+  want_arg=
+dnl
+dnl None of the options that take arguments expect the argument to
+dnl start with a -, so pretend we didn't see anything special.
+dnl
+  if test -n "$old_want_arg"; then
+    case "$arg" in
+      -*)
+        old_want_arg=
+      ;;
+    esac
+  fi
+  case "$old_want_arg" in
+    '')
+      case $arg in
+        /*.a)
+          exists=false
+          for f in $lflags; do
+            if test x$arg = x$f; then
+              exists=true
+            fi
+          done
+          if $exists; then
+            arg=
+          else
+            lflags="$lflags $arg"
+          fi
+        ;;
+        -bI:*)
+          exists=false
+          for f in $lflags; do
+            if test x$arg = x$f; then
+              exists=true
+            fi
+          done
+          if $exists; then
+            arg=
+          else
+            if test "$ac_cv_prog_gcc" = yes; then
+              lflags="$lflags -Xlinker $arg"
+            else
+              lflags="$lflags $arg"
+            fi
+          fi
+        ;;
+        -lang* | -lcrt0.o | -lc | -lgcc)
+          arg=
+        ;;
+        -[lLR])
+          want_arg=$arg
+          arg=
+        ;;
+        -[lLR]*)
+          exists=false
+          for f in $lflags; do
+            if test x$arg = x$f; then
+              exists=true
+            fi
+          done
+          if $exists; then
+            arg=
+          else
+            case "$arg" in
+              -lkernel32)
+                case "$canonical_host_type" in
+                  *-*-cygwin*)
+                    arg=
+                  ;;
+                  *)
+                    lflags="$lflags $arg"
+                  ;;
+                esac
+              ;;
+              -lm)
+              ;;
+              *)
+                lflags="$lflags $arg"
+              ;;
+            esac
+          fi
+        ;;
+        -u)
+          want_arg=$arg
+          arg=
+        ;;
+        -Y)
+          want_arg=$arg
+          arg=
+        ;;
+        *)
+          arg=
+        ;;
+      esac
+    ;;
+    -[lLR])
+      arg="$old_want_arg $arg"
+    ;;
+    -u)
+      arg="-u $arg"
+    ;;
+    -Y)
+dnl
+dnl Should probably try to ensure unique directory options here too.
+dnl This probably only applies to Solaris systems, and then will only
+dnl work with gcc...
+dnl
+      arg=`echo $arg | sed -e 's%^P,%%'`
+      SAVE_IFS=$IFS
+      IFS=:
+      list=
+      for elt in $arg; do
+        list="$list -L$elt"
+      done
+      IFS=$SAVE_IFS
+      arg="$list"
+    ;;
+  esac
+dnl
+  if test -n "$arg"; then
+    flibs="$flibs $arg"
+  fi
+done
+if test -n "$ld_run_path"; then
+  flibs_result="$ld_run_path $flibs"
+else
+  flibs_result="$flibs"
+fi
+changequote([, ])dnl
+ac_cv_flibs="$flibs_result"])
+FLIBS="$ac_cv_flibs"
+AC_SUBST(FLIBS)dnl
+AC_MSG_RESULT($FLIBS)
+])
+
+
+dnl ### Checks for operating system services
+
+
+AC_DEFUN(AC_SYS_INTERPRETER,
+[# Pull the hash mark out of the macro call to avoid m4 problems.
+ac_msg="whether #! works in shell scripts"
+AC_CACHE_CHECK($ac_msg, ac_cv_sys_interpreter,
+[echo '#! /bin/cat
+exit 69
+' > conftest
+chmod u+x conftest
+(SHELL=/bin/sh; export SHELL; ./conftest >/dev/null)
+if test $? -ne 69; then
+   ac_cv_sys_interpreter=yes
+else
+   ac_cv_sys_interpreter=no
+fi
+rm -f conftest])
+interpval="$ac_cv_sys_interpreter"
+])
+
+define(AC_HAVE_POUNDBANG,
+[errprint(__file__:__line__: [$0 has been replaced by AC_SYS_INTERPRETER, taking no arguments
+])m4exit(4)])
+
+AC_DEFUN(AC_SYS_LONG_FILE_NAMES,
+[AC_CACHE_CHECK(for long file names, ac_cv_sys_long_file_names,
+[ac_cv_sys_long_file_names=yes
+# Test for long file names in all the places we know might matter:
+#      .		the current directory, where building will happen
+#      $prefix/lib	where we will be installing things
+#      $exec_prefix/lib	likewise
+# eval it to expand exec_prefix.
+#      $TMPDIR		if set, where it might want to write temporary files
+# if $TMPDIR is not set:
+#      /tmp		where it might want to write temporary files
+#      /var/tmp		likewise
+#      /usr/tmp		likewise
+if test -n "$TMPDIR" && test -d "$TMPDIR" && test -w "$TMPDIR"; then
+  ac_tmpdirs="$TMPDIR"
+else
+  ac_tmpdirs='/tmp /var/tmp /usr/tmp'
+fi
+for ac_dir in  . $ac_tmpdirs `eval echo $prefix/lib $exec_prefix/lib` ; do
+  test -d $ac_dir || continue
+  test -w $ac_dir || continue # It is less confusing to not echo anything here.
+  (echo 1 > $ac_dir/conftest9012345) 2>/dev/null
+  (echo 2 > $ac_dir/conftest9012346) 2>/dev/null
+  val=`cat $ac_dir/conftest9012345 2>/dev/null`
+  if test ! -f $ac_dir/conftest9012345 || test "$val" != 1; then
+    ac_cv_sys_long_file_names=no
+    rm -f $ac_dir/conftest9012345 $ac_dir/conftest9012346 2>/dev/null
+    break
+  fi
+  rm -f $ac_dir/conftest9012345 $ac_dir/conftest9012346 2>/dev/null
+done])
+if test $ac_cv_sys_long_file_names = yes; then
+  AC_DEFINE(HAVE_LONG_FILE_NAMES)
+fi
+])
+
+AC_DEFUN(AC_SYS_RESTARTABLE_SYSCALLS,
+[AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls,
+[AC_TRY_RUN(
+[/* Exit 0 (true) if wait returns something other than -1,
+   i.e. the pid of the child, which means that wait was restarted
+   after getting the signal.  */
+#include <sys/types.h>
+#include <signal.h>
+ucatch (isig) { }
+main () {
+  int i = fork (), status;
+  if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); }
+  signal (SIGINT, ucatch);
+  status = wait(&i);
+  if (status == -1) wait(&i);
+  exit (status == -1);
+}
+], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)])
+if test $ac_cv_sys_restartable_syscalls = yes; then
+  AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS)
+fi
+])
+
+AC_DEFUN(AC_PATH_X,
+[AC_REQUIRE_CPP()dnl Set CPP; we run AC_PATH_X_DIRECT conditionally.
+# If we find X, set shell vars x_includes and x_libraries to the
+# paths, otherwise set no_x=yes.
+# Uses ac_ vars as temps to allow command line to override cache and checks.
+# --without-x overrides everything else, but does not touch the cache.
+AC_MSG_CHECKING(for X)
+
+AC_ARG_WITH(x, [  --with-x                use the X Window System])
+# $have_x is `yes', `no', `disabled', or empty when we do not yet know.
+if test "x$with_x" = xno; then
+  # The user explicitly disabled X.
+  have_x=disabled
+else
+  if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then
+    # Both variables are already set.
+    have_x=yes
+  else
+AC_CACHE_VAL(ac_cv_have_x,
+[# One or both of the vars are not set, and there is no cached value.
+ac_x_includes=NO ac_x_libraries=NO
+AC_PATH_X_XMKMF
+AC_PATH_X_DIRECT
+if test "$ac_x_includes" = NO || test "$ac_x_libraries" = NO; then
+  # Didn't find X anywhere.  Cache the known absence of X.
+  ac_cv_have_x="have_x=no"
+else
+  # Record where we found X for the cache.
+  ac_cv_have_x="have_x=yes \
+	        ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries"
+fi])dnl
+  fi
+  eval "$ac_cv_have_x"
+fi # $with_x != no
+
+if test "$have_x" != yes; then
+  AC_MSG_RESULT($have_x)
+  no_x=yes
+else
+  # If each of the values was on the command line, it overrides each guess.
+  test "x$x_includes" = xNONE && x_includes=$ac_x_includes
+  test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries
+  # Update the cache value to reflect the command line values.
+  ac_cv_have_x="have_x=yes \
+		ac_x_includes=$x_includes ac_x_libraries=$x_libraries"
+  AC_MSG_RESULT([libraries $x_libraries, headers $x_includes])
+fi
+])
+
+dnl Internal subroutine of AC_PATH_X.
+dnl Set ac_x_includes and/or ac_x_libraries.
+AC_DEFUN(AC_PATH_X_XMKMF,
+[rm -fr conftestdir
+if mkdir conftestdir; then
+  cd conftestdir
+  # Make sure to not put "make" in the Imakefile rules, since we grep it out.
+  cat > Imakefile <<'EOF'
+acfindx:
+	@echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"'
+EOF
+  if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then
+    # GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+    eval `${MAKE-make} acfindx 2>/dev/null | grep -v make`
+    # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR.
+    for ac_extension in a so sl; do
+      if test ! -f $ac_im_usrlibdir/libX11.$ac_extension &&
+        test -f $ac_im_libdir/libX11.$ac_extension; then
+        ac_im_usrlibdir=$ac_im_libdir; break
+      fi
+    done
+    # Screen out bogus values from the imake configuration.  They are
+    # bogus both because they are the default anyway, and because
+    # using them would break gcc on systems where it needs fixed includes.
+    case "$ac_im_incroot" in
+	/usr/include) ;;
+	*) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes="$ac_im_incroot" ;;
+    esac
+    case "$ac_im_usrlibdir" in
+	/usr/lib | /lib) ;;
+	*) test -d "$ac_im_usrlibdir" && ac_x_libraries="$ac_im_usrlibdir" ;;
+    esac
+  fi
+  cd ..
+  rm -fr conftestdir
+fi
+])
+
+dnl Internal subroutine of AC_PATH_X.
+dnl Set ac_x_includes and/or ac_x_libraries.
+AC_DEFUN(AC_PATH_X_DIRECT,
+[if test "$ac_x_includes" = NO; then
+  # Guess where to find include files, by looking for this one X11 .h file.
+  test -z "$x_direct_test_include" && x_direct_test_include=X11/Intrinsic.h
+
+  # First, try using that file with no special directory specified.
+AC_TRY_CPP([#include <$x_direct_test_include>],
+[# We can compile using X headers with no special include directory.
+ac_x_includes=],
+[# Look for the header file in a standard set of common directories.
+# Check X11 before X11Rn because it is often a symlink to the current release.
+  for ac_dir in               \
+    /usr/X11/include          \
+    /usr/X11R6/include        \
+    /usr/X11R5/include        \
+    /usr/X11R4/include        \
+                              \
+    /usr/include/X11          \
+    /usr/include/X11R6        \
+    /usr/include/X11R5        \
+    /usr/include/X11R4        \
+                              \
+    /usr/local/X11/include    \
+    /usr/local/X11R6/include  \
+    /usr/local/X11R5/include  \
+    /usr/local/X11R4/include  \
+                              \
+    /usr/local/include/X11    \
+    /usr/local/include/X11R6  \
+    /usr/local/include/X11R5  \
+    /usr/local/include/X11R4  \
+                              \
+    /usr/X386/include         \
+    /usr/x386/include         \
+    /usr/XFree86/include/X11  \
+                              \
+    /usr/include              \
+    /usr/local/include        \
+    /usr/unsupported/include  \
+    /usr/athena/include       \
+    /usr/local/x11r5/include  \
+    /usr/lpp/Xamples/include  \
+                              \
+    /usr/openwin/include      \
+    /usr/openwin/share/include \
+    ; \
+  do
+    if test -r "$ac_dir/$x_direct_test_include"; then
+      ac_x_includes=$ac_dir
+      break
+    fi
+  done])
+fi # $ac_x_includes = NO
+
+if test "$ac_x_libraries" = NO; then
+  # Check for the libraries.
+
+  test -z "$x_direct_test_library" && x_direct_test_library=Xt
+  test -z "$x_direct_test_function" && x_direct_test_function=XtMalloc
+
+  # See if we find them without any special options.
+  # Don't add to $LIBS permanently.
+  ac_save_LIBS="$LIBS"
+  LIBS="-l$x_direct_test_library $LIBS"
+AC_TRY_LINK(, [${x_direct_test_function}()],
+[LIBS="$ac_save_LIBS"
+# We can link X programs with no special library path.
+ac_x_libraries=],
+[LIBS="$ac_save_LIBS"
+# First see if replacing the include by lib works.
+# Check X11 before X11Rn because it is often a symlink to the current release.
+for ac_dir in `echo "$ac_x_includes" | sed s/include/lib/` \
+    /usr/X11/lib          \
+    /usr/X11R6/lib        \
+    /usr/X11R5/lib        \
+    /usr/X11R4/lib        \
+                          \
+    /usr/lib/X11          \
+    /usr/lib/X11R6        \
+    /usr/lib/X11R5        \
+    /usr/lib/X11R4        \
+                          \
+    /usr/local/X11/lib    \
+    /usr/local/X11R6/lib  \
+    /usr/local/X11R5/lib  \
+    /usr/local/X11R4/lib  \
+                          \
+    /usr/local/lib/X11    \
+    /usr/local/lib/X11R6  \
+    /usr/local/lib/X11R5  \
+    /usr/local/lib/X11R4  \
+                          \
+    /usr/X386/lib         \
+    /usr/x386/lib         \
+    /usr/XFree86/lib/X11  \
+                          \
+    /usr/lib              \
+    /usr/local/lib        \
+    /usr/unsupported/lib  \
+    /usr/athena/lib       \
+    /usr/local/x11r5/lib  \
+    /usr/lpp/Xamples/lib  \
+    /lib/usr/lib/X11	  \
+                          \
+    /usr/openwin/lib      \
+    /usr/openwin/share/lib \
+    ; \
+do
+dnl Don't even attempt the hair of trying to link an X program!
+  for ac_extension in a so sl; do
+    if test -r $ac_dir/lib${x_direct_test_library}.$ac_extension; then
+      ac_x_libraries=$ac_dir
+      break 2
+    fi
+  done
+done])
+fi # $ac_x_libraries = NO
+])
+
+dnl Find additional X libraries, magic flags, etc.
+AC_DEFUN(AC_PATH_XTRA,
+[AC_REQUIRE([AC_PATH_X])dnl
+if test "$no_x" = yes; then
+  # Not all programs may use this symbol, but it does not hurt to define it.
+  AC_DEFINE(X_DISPLAY_MISSING)
+  X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS=
+else
+  if test -n "$x_includes"; then
+    X_CFLAGS="$X_CFLAGS -I$x_includes"
+  fi
+
+  # It would also be nice to do this for all -L options, not just this one.
+  if test -n "$x_libraries"; then
+    X_LIBS="$X_LIBS -L$x_libraries"
+dnl FIXME banish uname from this macro!
+    # For Solaris; some versions of Sun CC require a space after -R and
+    # others require no space.  Words are not sufficient . . . .
+    case "`(uname -sr) 2>/dev/null`" in
+    "SunOS 5"*)
+      AC_MSG_CHECKING(whether -R must be followed by a space)
+      ac_xsave_LIBS="$LIBS"; LIBS="$LIBS -R$x_libraries"
+      AC_TRY_LINK(, , ac_R_nospace=yes, ac_R_nospace=no)
+      if test $ac_R_nospace = yes; then
+	AC_MSG_RESULT(no)
+	X_LIBS="$X_LIBS -R$x_libraries"
+      else
+	LIBS="$ac_xsave_LIBS -R $x_libraries"
+	AC_TRY_LINK(, , ac_R_space=yes, ac_R_space=no)
+	if test $ac_R_space = yes; then
+	  AC_MSG_RESULT(yes)
+	  X_LIBS="$X_LIBS -R $x_libraries"
+	else
+	  AC_MSG_RESULT(neither works)
+	fi
+      fi
+      LIBS="$ac_xsave_LIBS"
+    esac
+  fi
+
+  # Check for system-dependent libraries X programs must link with.
+  # Do this before checking for the system-independent R6 libraries
+  # (-lICE), since we may need -lsocket or whatever for X linking.
+
+  if test "$ISC" = yes; then
+    X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
+  else
+    # Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X
+    # libraries were built with DECnet support.  And karl@cs.umb.edu says
+    # the Alpha needs dnet_stub (dnet does not exist).
+    AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"])
+    if test $ac_cv_lib_dnet_dnet_ntoa = no; then
+      AC_CHECK_LIB(dnet_stub, dnet_ntoa,
+	[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
+    fi
+
+    # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
+    # to get the SysV transport functions.
+    # chad@anasazi.com says the Pyramis MIS-ES running DC/OSx (SVR4)
+    # needs -lnsl.
+    # The nsl library prevents programs from opening the X display
+    # on Irix 5.2, according to dickey@clark.net.
+    AC_CHECK_FUNC(gethostbyname)
+    if test $ac_cv_func_gethostbyname = no; then
+      AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl")
+    fi
+
+    # lieder@skyler.mavd.honeywell.com says without -lsocket,
+    # socket/setsockopt and other routines are undefined under SCO ODT
+    # 2.0.  But -lsocket is broken on IRIX 5.2 (and is not necessary
+    # on later versions), says simon@lia.di.epfl.ch: it contains
+    # gethostby* variants that don't use the nameserver (or something).
+    # -lsocket must be given before -lnsl if both are needed.
+    # We assume that if connect needs -lnsl, so does gethostbyname.
+    AC_CHECK_FUNC(connect)
+    if test $ac_cv_func_connect = no; then
+      AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", ,
+	$X_EXTRA_LIBS)
+    fi
+
+    # gomez@mi.uni-erlangen.de says -lposix is necessary on A/UX.
+    AC_CHECK_FUNC(remove)
+    if test $ac_cv_func_remove = no; then
+      AC_CHECK_LIB(posix, remove, X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix")
+    fi
+
+    # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay.
+    AC_CHECK_FUNC(shmat)
+    if test $ac_cv_func_shmat = no; then
+      AC_CHECK_LIB(ipc, shmat, X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc")
+    fi
+  fi
+
+  # Check for libraries that X11R6 Xt/Xaw programs need.
+  ac_save_LDFLAGS="$LDFLAGS"
+  test -n "$x_libraries" && LDFLAGS="$LDFLAGS -L$x_libraries"
+  # SM needs ICE to (dynamically) link under SunOS 4.x (so we have to
+  # check for ICE first), but we must link in the order -lSM -lICE or
+  # we get undefined symbols.  So assume we have SM if we have ICE.
+  # These have to be linked with before -lX11, unlike the other
+  # libraries we check for below, so use a different variable.
+  #  --interran@uluru.Stanford.EDU, kb@cs.umb.edu.
+  AC_CHECK_LIB(ICE, IceConnectionNumber,
+    [X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"], , $X_EXTRA_LIBS)
+  LDFLAGS="$ac_save_LDFLAGS"
+
+fi
+AC_SUBST(X_CFLAGS)dnl
+AC_SUBST(X_PRE_LIBS)dnl
+AC_SUBST(X_LIBS)dnl
+AC_SUBST(X_EXTRA_LIBS)dnl
+])
+
+dnl The old Cygwin32 macro is deprecated.
+AC_DEFUN(AC_CYGWIN32,
+[AC_OBSOLETE([$0], [; instead use AC_CYGWIN])dnl
+AC_CYGWIN])
+
+dnl Check for Cygwin.  This is a way to set the right value for
+dnl EXEEXT.
+AC_DEFUN(AC_CYGWIN,
+[AC_CACHE_CHECK(for Cygwin environment, ac_cv_cygwin,
+[AC_TRY_COMPILE(,[
+#ifndef __CYGWIN__
+#define __CYGWIN__ __CYGWIN32__
+#endif
+return __CYGWIN__;],
+ac_cv_cygwin=yes, ac_cv_cygwin=no)
+rm -f conftest*])
+CYGWIN=
+test "$ac_cv_cygwin" = yes && CYGWIN=yes])
+
+dnl Check for mingw32.  This is another way to set the right value for
+dnl EXEEXT.
+AC_DEFUN(AC_MINGW32,
+[AC_CACHE_CHECK(for mingw32 environment, ac_cv_mingw32,
+[AC_TRY_COMPILE(,[return __MINGW32__;],
+ac_cv_mingw32=yes, ac_cv_mingw32=no)
+rm -f conftest*])
+MINGW32=
+test "$ac_cv_mingw32" = yes && MINGW32=yes])
+
+dnl Check for the extension used for executables.  This knows that we
+dnl add .exe for Cygwin or mingw32.  Otherwise, it compiles a test
+dnl executable.  If this is called, the executable extensions will be
+dnl automatically used by link commands run by the configure script.
+AC_DEFUN(AC_EXEEXT,
+[AC_REQUIRE([AC_CYGWIN])
+AC_REQUIRE([AC_MINGW32])
+AC_MSG_CHECKING([for executable suffix])
+AC_CACHE_VAL(ac_cv_exeext,
+[if test "$CYGWIN" = yes || test "$MINGW32" = yes; then
+  ac_cv_exeext=.exe
+else
+  rm -f conftest*
+  echo 'int main () { return 0; }' > conftest.$ac_ext
+  ac_cv_exeext=
+  if AC_TRY_EVAL(ac_link); then
+    for file in conftest.*; do
+      case $file in
+      *.c | *.o | *.obj) ;;
+      *) ac_cv_exeext=`echo $file | sed -e s/conftest//` ;;
+      esac
+    done
+  else
+    AC_MSG_ERROR([installation or configuration problem: compiler cannot create executables.])
+  fi
+  rm -f conftest*
+  test x"${ac_cv_exeext}" = x && ac_cv_exeext=no
+fi])
+EXEEXT=""
+test x"${ac_cv_exeext}" != xno && EXEEXT=${ac_cv_exeext}
+AC_MSG_RESULT(${ac_cv_exeext})
+dnl Setting ac_exeext will implicitly change the ac_link command.
+ac_exeext=$EXEEXT
+AC_SUBST(EXEEXT)])
+
+
+dnl ### Checks for UNIX variants
+dnl These are kludges which should be replaced by a single POSIX check.
+dnl They aren't cached, to discourage their use.
+
+
+AC_DEFUN(AC_AIX,
+[AC_BEFORE([$0], [AC_TRY_COMPILE])dnl
+AC_BEFORE([$0], [AC_TRY_RUN])dnl
+AC_MSG_CHECKING(for AIX)
+AC_EGREP_CPP(yes,
+[#ifdef _AIX
+  yes
+#endif
+], [AC_MSG_RESULT(yes); AC_DEFINE(_ALL_SOURCE)], AC_MSG_RESULT(no))
+])
+
+AC_DEFUN(AC_MINIX,
+[AC_BEFORE([$0], [AC_TRY_COMPILE])dnl
+AC_BEFORE([$0], [AC_TRY_RUN])dnl
+AC_CHECK_HEADER(minix/config.h, MINIX=yes, MINIX=)
+if test "$MINIX" = yes; then
+  AC_DEFINE(_POSIX_SOURCE)
+  AC_DEFINE(_POSIX_1_SOURCE, 2)
+  AC_DEFINE(_MINIX)
+fi
+])
+
+AC_DEFUN(AC_ISC_POSIX,
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_BEFORE([$0], [AC_TRY_COMPILE])dnl
+AC_BEFORE([$0], [AC_TRY_RUN])dnl
+AC_MSG_CHECKING(for POSIXized ISC)
+if test -d /etc/conf/kconfig.d &&
+  grep _POSIX_VERSION [/usr/include/sys/unistd.h] >/dev/null 2>&1
+then
+  AC_MSG_RESULT(yes)
+  ISC=yes # If later tests want to check for ISC.
+  AC_DEFINE(_POSIX_SOURCE)
+  if test "$GCC" = yes; then
+    CC="$CC -posix"
+  else
+    CC="$CC -Xp"
+  fi
+else
+  AC_MSG_RESULT(no)
+  ISC=
+fi
+])
+
+AC_DEFUN(AC_XENIX_DIR,
+[AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl
+AC_REQUIRE([AC_DIR_HEADER])dnl
+AC_MSG_CHECKING(for Xenix)
+AC_EGREP_CPP(yes,
+[#if defined(M_XENIX) && !defined(M_UNIX)
+  yes
+#endif
+], [AC_MSG_RESULT(yes); XENIX=yes], [AC_MSG_RESULT(no); XENIX=])
+if test "$XENIX" = yes; then
+  # Make sure -ldir precedes -lx.
+  test $ac_header_dirent = dirent.h && LIBS="-ldir $LIBS"
+  LIBS="$LIBS -lx"
+fi
+])
+
+AC_DEFUN(AC_DYNIX_SEQ,
+[AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT])dnl
+AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS")
+])
+
+AC_DEFUN(AC_IRIX_SUN,
+[AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT or AC_CHECK_LIB(sun, getpwnam)])dnl
+AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS")
+])
+
+AC_DEFUN(AC_SCO_INTL,
+[AC_OBSOLETE([$0], [; instead use AC_FUNC_STRFTIME])dnl
+AC_CHECK_LIB(intl, strftime, LIBS="-lintl $LIBS")
+])
diff -up firefox-78.8.0/build/autoconf/autoconf.m4.D89554-autoconf1.diff firefox-78.8.0/build/autoconf/autoconf.m4
--- firefox-78.8.0/build/autoconf/autoconf.m4.D89554-autoconf1.diff	2021-02-25 13:48:13.605993481 +0100
+++ firefox-78.8.0/build/autoconf/autoconf.m4	2021-02-25 13:48:13.605993481 +0100
@@ -0,0 +1,28 @@
+dnl Driver that loads the Autoconf macro files.
+dnl Requires GNU m4.
+dnl This file is part of Autoconf.
+dnl Copyright (C) 1994 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., 59 Temple Place - Suite 330, Boston, MA
+dnl 02111-1307, USA.
+dnl
+dnl Written by David MacKenzie.
+dnl
+include(acgeneral.m4)dnl
+builtin(include, acspecific.m4)dnl
+builtin(include, acoldnames.m4)dnl
+dnl Do not sinclude acsite.m4 here, because it may not be installed
+dnl yet when Autoconf is frozen.
+dnl Do not sinclude ./aclocal.m4 here, to prevent it from being frozen.
diff -up firefox-78.8.0/build/autoconf/autoconf.sh.D89554-autoconf1.diff firefox-78.8.0/build/autoconf/autoconf.sh
--- firefox-78.8.0/build/autoconf/autoconf.sh.D89554-autoconf1.diff	2021-02-25 13:48:13.606993484 +0100
+++ firefox-78.8.0/build/autoconf/autoconf.sh	2021-02-25 13:48:13.606993484 +0100
@@ -0,0 +1,159 @@
+#! @SHELL@
+# autoconf -- create `configure' using m4 macros
+# Copyright (C) 1992, 1993, 1994, 1996 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., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# If given no args, create `configure' from template file `configure.in'.
+# With one arg, create a configure script on standard output from
+# the given template file.
+
+usage="\
+Usage: autoconf [-h] [--help] [-m dir] [--macrodir=dir]
+       [-l dir] [--localdir=dir] [--version] [template-file]"
+
+# NLS nuisances.
+# Only set these to C if already set.  These must not be set unconditionally
+# because not all systems understand e.g. LANG=C (notably SCO).
+# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
+# Non-C LC_CTYPE values break the ctype check.
+if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
+if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi
+
+: ${AC_MACRODIR=@datadir@}
+: ${M4=@M4@}
+: ${AWK=@AWK@}
+case "${M4}" in
+/*) # Handle the case that m4 has moved since we were configured.
+    # It may have been found originally in a build directory.
+    test -f "${M4}" || M4=m4 ;;
+esac
+
+: ${TMPDIR=/tmp}
+tmpout=${TMPDIR}/acout.$$
+localdir=
+show_version=no
+
+while test $# -gt 0 ; do
+   case "${1}" in
+      -h | --help | --h* )
+         echo "${usage}" 1>&2; exit 0 ;;
+      --localdir=* | --l*=* )
+         localdir="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
+         shift ;;
+      -l | --localdir | --l*)
+         shift
+         test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
+         localdir="${1}"
+         shift ;;
+      --macrodir=* | --m*=* )
+         AC_MACRODIR="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
+         shift ;;
+      -m | --macrodir | --m* )
+         shift
+         test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
+         AC_MACRODIR="${1}"
+         shift ;;
+      --version | --v* )
+         show_version=yes; shift ;;
+      -- )     # Stop option processing
+        shift; break ;;
+      - )	# Use stdin as input.
+        break ;;
+      -* )
+        echo "${usage}" 1>&2; exit 1 ;;
+      * )
+        break ;;
+   esac
+done
+
+if test $show_version = yes; then
+  version=`sed -n 's/define.AC_ACVERSION.[ 	]*\([0-9.]*\).*/\1/p' \
+    $AC_MACRODIR/acgeneral.m4`
+  echo "Autoconf version $version"
+  exit 0
+fi
+
+case $# in
+  0) infile=configure.in ;;
+  1) infile="$1" ;;
+  *) echo "$usage" >&2; exit 1 ;;
+esac
+
+trap 'rm -f $tmpin $tmpout; exit 1' 1 2 15
+
+tmpin=${TMPDIR}/acin.$$ # Always set this, to avoid bogus errors from some rm's.
+if test z$infile = z-; then
+  infile=$tmpin
+  cat > $infile
+elif test ! -r "$infile"; then
+  echo "autoconf: ${infile}: No such file or directory" >&2
+  exit 1
+fi
+
+if test -n "$localdir"; then
+  use_localdir="-I$localdir -DAC_LOCALDIR=$localdir"
+else
+  use_localdir=
+fi
+
+# Use the frozen version of Autoconf if available.
+r= f=
+# Some non-GNU m4's don't reject the --help option, so give them /dev/null.
+case `$M4 --help < /dev/null 2>&1` in
+*reload-state*) test -r $AC_MACRODIR/autoconf.m4f && { r=--reload f=f; } ;;
+*traditional*) ;;
+*) echo Autoconf requires GNU m4 1.1 or later >&2; rm -f $tmpin; exit 1 ;;
+esac
+
+$M4 -I$AC_MACRODIR $use_localdir $r autoconf.m4$f $infile > $tmpout ||
+  { rm -f $tmpin $tmpout; exit 2; }
+
+# You could add your own prefixes to pattern if you wanted to check for
+# them too, e.g. pattern='\(AC_\|ILT_\)', except that UNIX sed doesn't do
+# alternation.
+pattern="AC_"
+
+status=0
+if grep "^[^#]*${pattern}" $tmpout > /dev/null 2>&1; then
+  echo "autoconf: Undefined macros:" >&2
+  sed -n "s/^[^#]*\\(${pattern}[_A-Za-z0-9]*\\).*/\\1/p" $tmpout |
+    while read macro; do
+      grep -n "^[^#]*$macro" $infile /dev/null
+      test $? -eq 1 && echo >&2 "***BUG in Autoconf--please report*** $macro"
+    done | sort -u >&2
+  status=1
+fi
+
+if test $# -eq 0; then
+  exec 4> configure; chmod +x configure
+else
+  exec 4>&1
+fi
+
+# Put the real line numbers into configure to make config.log more helpful.
+$AWK '
+/__oline__/ { printf "%d:", NR + 1 }
+           { print }
+' $tmpout | sed '
+/__oline__/s/^\([0-9][0-9]*\):\(.*\)__oline__/\2\1/
+' >&4
+
+rm -f $tmpout
+
+exit $status
diff -up firefox-78.8.0/build/moz.configure/old.configure.D89554-autoconf1.diff firefox-78.8.0/build/moz.configure/old.configure
--- firefox-78.8.0/build/moz.configure/old.configure.D89554-autoconf1.diff	2021-02-17 08:48:52.000000000 +0100
+++ firefox-78.8.0/build/moz.configure/old.configure	2021-02-25 13:50:02.595363534 +0100
@@ -4,65 +4,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-
-option(env='AUTOCONF', nargs=1, help='Path to autoconf 2.13')
-
-
-@depends(mozconfig, 'AUTOCONF')
-@checking('for autoconf')
-@imports(_from='os.path', _import='exists')
-@imports('re')
-def autoconf(mozconfig, autoconf):
-    mozconfig_autoconf = None
-    if mozconfig['path']:
-        make_extra = mozconfig['make_extra']
-        if make_extra:
-            for assignment in make_extra:
-                m = re.match('(?:export\s+)?AUTOCONF\s*:?=\s*(.+)$',
-                             assignment)
-                if m:
-                    mozconfig_autoconf = m.group(1)
-                # Check whether we've exported any known-broken variables.
-                m = re.match('(?:export\s+)?(?:CC|CXX)\s*:?=\s*(?:.+)$',
-                             assignment)
-                if m:
-                    die('Setting the value of CC or CXX with "mk_add_options" '
-                        'can cause the build to fail unexpectedly. Please '
-                        'change your mozconfig to instead use '
-                        '"ac_add_options", e.g. ac_add_options '
-                        'CC=my-custom-cc".')
-
-    autoconf = autoconf[0] if autoconf else None
-
-    for ac in (mozconfig_autoconf, autoconf, 'autoconf-2.13', 'autoconf2.13',
-               'autoconf213'):
-        if ac:
-            autoconf = find_program(ac)
-            if autoconf:
-                break
-    else:
-        fink = find_program('fink')
-        if fink:
-            autoconf = os.path.normpath(os.path.join(
-                fink, '..', '..', 'lib', 'autoconf2.13', 'bin', 'autoconf'))
-        else:
-            brew = find_program('brew')
-            if brew:
-                autoconf = os.path.normpath(os.path.join(
-                    brew, '..', '..', 'Cellar', 'autoconf213', '2.13', 'bin',
-                    'autoconf213'))
-
-    if not autoconf:
-        die('Could not find autoconf 2.13')
-
-    if not exists(autoconf):
-        die('Could not find autoconf 2.13 at %s', autoconf)
-
-    return autoconf
-
-
-set_config('AUTOCONF', autoconf)
-
+m4 = check_prog('M4', ('m4',))
 
 @depends(mozconfig)
 def prepare_mozconfig(mozconfig):
@@ -78,7 +20,7 @@ def prepare_mozconfig(mozconfig):
         return items
 
 
-@depends('OLD_CONFIGURE', 'MOZILLABUILD', prepare_mozconfig, autoconf, check_build_environment,
+@depends('OLD_CONFIGURE', 'MOZILLABUILD', prepare_mozconfig, awk, m4, check_build_environment,
          shell, old_configure_assignments, build_project)
 @imports(_from='__builtin__', _import='open')
 @imports(_from='__builtin__', _import='print')
@@ -96,7 +38,7 @@ def prepare_mozconfig(mozconfig):
 @imports(_from='os', _import='rename')
 @imports(_from='subprocess', _import='CalledProcessError')
 @imports(_from='__builtin__', _import='OSError')
-def prepare_configure(old_configure, mozillabuild, mozconfig, autoconf, build_env, shell,
+def prepare_configure(old_configure, mozillabuild, mozconfig, awk, m4, build_env, shell,
                       old_configure_assignments, build_project):
     # os.path.abspath in the sandbox will ensure forward slashes on Windows,
     # which is actually necessary because this path actually ends up literally
@@ -125,13 +67,18 @@ def prepare_configure(old_configure, moz
             refresh = False
 
     if refresh:
+        autoconf = os.path.join(build_env.topsrcdir, 'build', 'autoconf', 'autoconf.sh')
         log.info('Refreshing %s with %s', old_configure, autoconf)
+        env = dict(environ)
+        env['M4'] = m4
+        env['AWK'] = awk
+        env['AC_MACRODIR'] = os.path.join(build_env.topsrcdir, 'build', 'autoconf')
 
         try:
             script = subprocess.check_output([
                 shell, autoconf,
                 '--localdir=%s' % os.path.dirname(old_configure),
-                old_configure + '.in'])
+                old_configure + '.in'], env=env)
         except CalledProcessError as exc:
             # Autoconf on win32 may break due to a bad $PATH.  Let the user know
             # their $PATH is suspect.
@@ -185,10 +132,6 @@ def prepare_configure(old_configure, moz
 
             inject('# end of mozconfig values')
 
-        # Autoconf is special, because it might be passed from
-        # mozconfig['make_extra'], which we don't pass automatically above.
-        inject('export AUTOCONF=%s' % quote(autoconf))
-
         for k, v in old_configure_assignments:
             inject('%s=%s' % (k, quote(v)))