updated for version 7.4.223v7.4.223

Problem:    Still using an older autoconf version.
Solution:   Switch to autoconf 2.69.

4 files changed, 562 insertions, 516 deletions

diff --git a/src/Makefile b/src/Makefile
index 4e9b5f14c..ffa8d246e 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -586,6 +586,9 @@ CClink = $(CC)
 # as root: sysctl -w vm.max_proc_mmap=30000
 #EXTRA_LIBS = /usr/local/lib/libefence.a
 
+# Autoconf binary.
+AUTOCONF = autoconf
+
 # PURIFY - remove the # to use the "purify" program (hoi Nia++!)
 #PURIFY = purify
 
@@ -1713,7 +1716,7 @@ reconfig: scratch clean
 # - Uses ">config.log" instead of "./config.log".
 autoconf:
 	if test ! -f configure.save; then mv configure configure.save; fi
-	autoconf
+	$(AUTOCONF)
 	sed -e 's+>config.log+>auto/config.log+' -e 's+\./config.log+auto/config.log+' configure > auto/configure
 	chmod 755 auto/configure
 	mv -f configure.save configure
diff --git a/src/auto/configure b/src/auto/configure
index f8f359881..5d3a9ed45 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -1,11 +1,9 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.65.
+# Generated by GNU Autoconf 2.69.
 #
 #
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
-# Inc.
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
 #
 #
 # This configure script is free software; the Free Software Foundation
@@ -89,6 +87,7 @@ fi
 IFS=" ""	$as_nl"
 
 # Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
 case $0 in #((
   *[\\/]* ) as_myself=$0 ;;
   *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -133,6 +132,31 @@ export LANGUAGE
 # CDPATH.
 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
 if test "x$CONFIG_SHELL" = x; then
   as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
   emulate sh
@@ -166,7 +190,8 @@ if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
 else
   exitcode=1; echo positional parameters were not saved.
 fi
-test x\$exitcode = x0 || exit 1"
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
   as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
   as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
   eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
@@ -211,14 +236,25 @@ IFS=$as_save_IFS
 
 
       if test "x$CONFIG_SHELL" != x; then :
-  # We cannot yet assume a decent shell, so we have to provide a
-	# neutralization value for shells without unset; and this also
-	# works around shells that cannot unset nonexistent variables.
-	BASH_ENV=/dev/null
-	ENV=/dev/null
-	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-	export CONFIG_SHELL
-	exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
 fi
 
     if test x$as_have_required = xno; then :
@@ -316,10 +352,18 @@ $as_echo X"$as_dir" |
       test -d "$as_dir" && break
     done
     test -z "$as_dirs" || eval "mkdir $as_dirs"
-  } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
 
 
 } # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
 # as_fn_append VAR VALUE
 # ----------------------
 # Append the text in VALUE to the end of the definition contained in VAR. Take
@@ -356,19 +400,19 @@ else
 fi # as_fn_arith
 
 
-# as_fn_error ERROR [LINENO LOG_FD]
-# ---------------------------------
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
 # Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
 # provided, also output the error to LOG_FD, referencing LINENO. Then exit the
-# script with status $?, using 1 if that was 0.
+# script with STATUS, using 1 if that was 0.
 as_fn_error ()
 {
-  as_status=$?; test $as_status -eq 0 && as_status=1
-  if test "$3"; then
-    as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-    $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
   fi
-  $as_echo "$as_me: error: $1" >&2
+  $as_echo "$as_me: error: $2" >&2
   as_fn_exit $as_status
 } # as_fn_error
 
@@ -441,6 +485,10 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
   chmod +x "$as_me.lineno" ||
     { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
 
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
   # Don't try to exec as it changes $[0], causing all sort of problems
   # (the dirname of $[0] is not the place where we might find the
   # original and so on.  Autoconf is especially sensitive to this).
@@ -475,16 +523,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -p'.
+    # In both cases, we have to default to `cp -pR'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -p'
+      as_ln_s='cp -pR'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -p'
+    as_ln_s='cp -pR'
   fi
 else
-  as_ln_s='cp -p'
+  as_ln_s='cp -pR'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -496,28 +544,8 @@ else
   as_mkdir_p=false
 fi
 
-if test -x / >/dev/null 2>&1; then
-  as_test_x='test -x'
-else
-  if ls -dL / >/dev/null 2>&1; then
-    as_ls_L_option=L
-  else
-    as_ls_L_option=
-  fi
-  as_test_x='
-    eval sh -c '\''
-      if test -d "$1"; then
-	test -d "$1/.";
-      else
-	case $1 in #(
-	-*)set "./$1";;
-	esac;
-	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
-	???[sx]*):;;*)false;;esac;fi
-    '\'' sh
-  '
-fi
-as_executable_p=$as_test_x
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -530,7 +558,7 @@ test -n "$DJDIR" || exec 7<&0 </dev/null
 exec 6>&1
 
 # Name of the host.
-# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
 # so uname gets run too.
 ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
 
@@ -872,8 +900,9 @@ do
   fi
 
   case $ac_option in
-  *=*)	ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
-  *)	ac_optarg=yes ;;
+  *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *=)   ac_optarg= ;;
+  *)    ac_optarg=yes ;;
   esac
 
   # Accept the important Cygnus configure options, so we can diagnose typos.
@@ -918,7 +947,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error "invalid feature name: $ac_useropt"
+      as_fn_error $? "invalid feature name: $ac_useropt"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -944,7 +973,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error "invalid feature name: $ac_useropt"
+      as_fn_error $? "invalid feature name: $ac_useropt"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -1148,7 +1177,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error "invalid package name: $ac_useropt"
+      as_fn_error $? "invalid package name: $ac_useropt"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -1164,7 +1193,7 @@ do
     ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
-      as_fn_error "invalid package name: $ac_useropt"
+      as_fn_error $? "invalid package name: $ac_useropt"
     ac_useropt_orig=$ac_useropt
     ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
@@ -1194,8 +1223,8 @@ do
   | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
     x_libraries=$ac_optarg ;;
 
-  -*) as_fn_error "unrecognized option: \`$ac_option'
-Try \`$0 --help' for more information."
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
     ;;
 
   *=*)
@@ -1203,7 +1232,7 @@ Try \`$0 --help' for more information."
     # Reject names that are not valid shell variable names.
     case $ac_envvar in #(
       '' | [0-9]* | *[!_$as_cr_alnum]* )
-      as_fn_error "invalid variable name: \`$ac_envvar'" ;;
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
     esac
     eval $ac_envvar=\$ac_optarg
     export $ac_envvar ;;
@@ -1213,7 +1242,7 @@ Try \`$0 --help' for more information."
     $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
     expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
       $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
-    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
     ;;
 
   esac
@@ -1221,13 +1250,13 @@ done
 
 if test -n "$ac_prev"; then
   ac_option=--`echo $ac_prev | sed 's/_/-/g'`
-  as_fn_error "missing argument to $ac_option"
+  as_fn_error $? "missing argument to $ac_option"
 fi
 
 if test -n "$ac_unrecognized_opts"; then
   case $enable_option_checking in
     no) ;;
-    fatal) as_fn_error "unrecognized options: $ac_unrecognized_opts" ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
     *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
   esac
 fi
@@ -1250,7 +1279,7 @@ do
     [\\/$]* | ?:[\\/]* )  continue;;
     NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
   esac
-  as_fn_error "expected an absolute directory name for --$ac_var: $ac_val"
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
 done
 
 # There might be people who depend on the old broken behavior: `$host'
@@ -1264,8 +1293,6 @@ target=$target_alias
 if test "x$host_alias" != x; then
   if test "x$build_alias" = x; then
     cross_compiling=maybe
-    $as_echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
-    If a cross compiler is detected then cross compile mode will be used." >&2
   elif test "x$build_alias" != "x$host_alias"; then
     cross_compiling=yes
   fi
@@ -1280,9 +1307,9 @@ test "$silent" = yes && exec 6>/dev/null
 ac_pwd=`pwd` && test -n "$ac_pwd" &&
 ac_ls_di=`ls -di .` &&
 ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
-  as_fn_error "working directory cannot be determined"
+  as_fn_error $? "working directory cannot be determined"
 test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
-  as_fn_error "pwd does not report name of working directory"
+  as_fn_error $? "pwd does not report name of working directory"
 
 
 # Find the source files, if location was not specified.
@@ -1321,11 +1348,11 @@ else
 fi
 if test ! -r "$srcdir/$ac_unique_file"; then
   test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
-  as_fn_error "cannot find sources ($ac_unique_file) in $srcdir"
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
 fi
 ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
 ac_abs_confdir=`(
-	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error "$ac_msg"
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
 	pwd)`
 # When building in place, set srcdir=.
 if test "$ac_abs_confdir" = "$ac_pwd"; then
@@ -1365,7 +1392,7 @@ Configuration:
       --help=short        display options specific to this package
       --help=recursive    display the short help of all the included packages
   -V, --version           display version information and exit
-  -q, --quiet, --silent   do not print \`checking...' messages
+  -q, --quiet, --silent   do not print \`checking ...' messages
       --cache-file=FILE   cache test results in FILE [disabled]
   -C, --config-cache      alias for \`--cache-file=config.cache'
   -n, --no-create         do not create output files
@@ -1563,9 +1590,9 @@ test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
 configure
-generated by GNU Autoconf 2.65
+generated by GNU Autoconf 2.69
 
-Copyright (C) 2009 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -1609,7 +1636,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 
 	ac_retval=1
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_compile
@@ -1635,7 +1662,7 @@ $as_echo "$ac_try_echo"; } >&5
     mv -f conftest.er1 conftest.err
   fi
   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } >/dev/null && {
+  test $ac_status = 0; } > conftest.i && {
 	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
 	 test ! -s conftest.err
        }; then :
@@ -1646,7 +1673,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 
     ac_retval=1
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_cpp
@@ -1678,7 +1705,7 @@ $as_echo "$ac_try_echo"; } >&5
 	 test ! -s conftest.err
        } && test -s conftest$ac_exeext && {
 	 test "$cross_compiling" = yes ||
-	 $as_test_x conftest$ac_exeext
+	 test -x conftest$ac_exeext
        }; then :
   ac_retval=0
 else
@@ -1692,7 +1719,7 @@ fi
   # interfere with the next link command; also delete a directory that is
   # left behind by Apple's compiler.  We do this before executing the actions.
   rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_link
@@ -1734,7 +1761,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
        ac_retval=$ac_status
 fi
   rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_run
@@ -1747,10 +1774,10 @@ fi
 ac_fn_c_check_header_mongrel ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+  if eval \${$3+:} false; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 fi
 eval ac_res=\$$3
@@ -1786,7 +1813,7 @@ if ac_fn_c_try_cpp "$LINENO"; then :
 else
   ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
 $as_echo "$ac_header_preproc" >&6; }
 
@@ -1813,7 +1840,7 @@ $as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
 esac
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=\$ac_header_compiler"
@@ -1822,7 +1849,7 @@ eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_header_mongrel
 
@@ -1835,7 +1862,7 @@ ac_fn_c_check_header_compile ()
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -1853,7 +1880,7 @@ fi
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_header_compile
 
@@ -1865,7 +1892,7 @@ ac_fn_c_check_func ()
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -1920,7 +1947,7 @@ fi
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_func
 
@@ -1933,7 +1960,7 @@ ac_fn_c_check_type ()
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=no"
@@ -1974,7 +2001,7 @@ fi
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_type
 
@@ -1987,7 +2014,7 @@ ac_fn_c_find_uintX_t ()
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for uint$2_t" >&5
 $as_echo_n "checking for uint$2_t... " >&6; }
-if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=no"
@@ -2002,7 +2029,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !((($ac_type) -1 >> ($2 / 2 - 1)) >> ($2 / 2 - 1) == 3)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -2017,8 +2045,7 @@ if ac_fn_c_try_compile "$LINENO"; then :
 esac
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-       eval as_val=\$$3
-   if test "x$as_val" = x""no; then :
+       if eval test \"x\$"$3"\" = x"no"; then :
 
 else
   break
@@ -2028,7 +2055,7 @@ fi
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_find_uintX_t
 
@@ -2049,7 +2076,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) >= 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -2065,7 +2093,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -2091,7 +2120,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) < 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -2107,7 +2137,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) >= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -2141,7 +2172,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -2205,7 +2237,7 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
 rm -f conftest.val
 
   fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_compute_int
@@ -2214,7 +2246,7 @@ This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
 It was created by $as_me, which was
-generated by GNU Autoconf 2.65.  Invocation command line was
+generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
 
@@ -2324,11 +2356,9 @@ trap 'exit_status=$?
   {
     echo
 
-    cat <<\_ASBOX
-## ---------------- ##
+    $as_echo "## ---------------- ##
 ## Cache variables. ##
-## ---------------- ##
-_ASBOX
+## ---------------- ##"
     echo
     # The following way of writing the cache mishandles newlines in values,
 (
@@ -2362,11 +2392,9 @@ $as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
 )
     echo
 
-    cat <<\_ASBOX
-## ----------------- ##
+    $as_echo "## ----------------- ##
 ## Output variables. ##
-## ----------------- ##
-_ASBOX
+## ----------------- ##"
     echo
     for ac_var in $ac_subst_vars
     do
@@ -2379,11 +2407,9 @@ _ASBOX
     echo
 
     if test -n "$ac_subst_files"; then
-      cat <<\_ASBOX
-## ------------------- ##
+      $as_echo "## ------------------- ##
 ## File substitutions. ##
-## ------------------- ##
-_ASBOX
+## ------------------- ##"
       echo
       for ac_var in $ac_subst_files
       do
@@ -2397,11 +2423,9 @@ _ASBOX
     fi
 
     if test -s confdefs.h; then
-      cat <<\_ASBOX
-## ----------- ##
+      $as_echo "## ----------- ##
 ## confdefs.h. ##
-## ----------- ##
-_ASBOX
+## ----------- ##"
       echo
       cat confdefs.h
       echo
@@ -2456,7 +2480,12 @@ _ACEOF
 ac_site_file1=NONE
 ac_site_file2=NONE
 if test -n "$CONFIG_SITE"; then
-  ac_site_file1=$CONFIG_SITE
+  # We do not want a PATH search for config.site.
+  case $CONFIG_SITE in #((
+    -*)  ac_site_file1=./$CONFIG_SITE;;
+    */*) ac_site_file1=$CONFIG_SITE;;
+    *)   ac_site_file1=./$CONFIG_SITE;;
+  esac
 elif test "x$prefix" != xNONE; then
   ac_site_file1=$prefix/share/config.site
   ac_site_file2=$prefix/etc/config.site
@@ -2471,7 +2500,11 @@ do
     { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
 $as_echo "$as_me: loading site script $ac_site_file" >&6;}
     sed 's/^/| /' "$ac_site_file" >&5
-    . "$ac_site_file"
+    . "$ac_site_file" \
+      || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
   fi
 done
 
@@ -2547,7 +2580,7 @@ if $ac_cache_corrupted; then
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
   { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
 $as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
-  as_fn_error "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+  as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
 fi
 ## -------------------- ##
 ## Main body of script. ##
@@ -2569,7 +2602,7 @@ $as_echo "#define UNIX 1" >>confdefs.h
 $as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
 set x ${MAKE-make}
 ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
-if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat >conftest.make <<\_ACEOF
@@ -2577,7 +2610,7 @@ SHELL = /bin/sh
 all:
 	@echo '@@@%%%=$(MAKE)=@@@%%%'
 _ACEOF
-# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
 case `${MAKE-make} -f conftest.make 2>/dev/null` in
   *@@@%%%=?*=@@@%%%*)
     eval ac_cv_prog_make_${ac_make}_set=yes;;
@@ -2607,7 +2640,7 @@ if test -n "$ac_tool_prefix"; then
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2619,7 +2652,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2647,7 +2680,7 @@ if test -z "$ac_cv_prog_CC"; then
 set dummy gcc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$ac_ct_CC"; then
@@ -2659,7 +2692,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2700,7 +2733,7 @@ if test -z "$CC"; then
 set dummy ${ac_tool_prefix}cc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2712,7 +2745,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}cc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2740,7 +2773,7 @@ if test -z "$CC"; then
 set dummy cc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2753,7 +2786,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
        ac_prog_rejected=yes
        continue
@@ -2799,7 +2832,7 @@ if test -z "$CC"; then
 set dummy $ac_tool_prefix$ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2811,7 +2844,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2843,7 +2876,7 @@ do
 set dummy $ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$ac_ct_CC"; then
@@ -2855,7 +2888,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2897,8 +2930,8 @@ fi
 
 test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "no acceptable C compiler found in \$PATH
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
 
 # Provide some information about the compiler.
 $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
@@ -3012,9 +3045,8 @@ sed 's/^/| /' conftest.$ac_ext >&5
 
 { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ as_fn_set_status 77
-as_fn_error "C compiler cannot create executables
-See \`config.log' for more details." "$LINENO" 5; }; }
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
@@ -3056,8 +3088,8 @@ done
 else
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot compute suffix of executables: cannot compile and link
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 rm -f conftest conftest$ac_cv_exeext
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
@@ -3114,9 +3146,9 @@ $as_echo "$ac_try_echo"; } >&5
     else
 	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot run C compiled programs.
+as_fn_error $? "cannot run C compiled programs.
 If you meant to cross compile, use \`--host'.
-See \`config.log' for more details." "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5; }
     fi
   fi
 fi
@@ -3127,7 +3159,7 @@ rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
 ac_clean_files=$ac_clean_files_save
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
 $as_echo_n "checking for suffix of object files... " >&6; }
-if test "${ac_cv_objext+set}" = set; then :
+if ${ac_cv_objext+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3167,8 +3199,8 @@ sed 's/^/| /' conftest.$ac_ext >&5
 
 { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot compute suffix of object files: cannot compile
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 rm -f conftest.$ac_cv_objext conftest.$ac_ext
 fi
@@ -3178,7 +3210,7 @@ OBJEXT=$ac_cv_objext
 ac_objext=$OBJEXT
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
 $as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
-if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+if ${ac_cv_c_compiler_gnu+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3215,7 +3247,7 @@ ac_test_CFLAGS=${CFLAGS+set}
 ac_save_CFLAGS=$CFLAGS
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
 $as_echo_n "checking whether $CC accepts -g... " >&6; }
-if test "${ac_cv_prog_cc_g+set}" = set; then :
+if ${ac_cv_prog_cc_g+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_save_c_werror_flag=$ac_c_werror_flag
@@ -3293,7 +3325,7 @@ else
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
 $as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
-if test "${ac_cv_prog_cc_c89+set}" = set; then :
+if ${ac_cv_prog_cc_c89+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_cv_prog_cc_c89=no
@@ -3302,8 +3334,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdarg.h>
 #include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
+struct stat;
 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
 struct buf { int x; };
 FILE * (*rcsopen) (struct buf *, struct stat *, int);
@@ -3399,7 +3430,7 @@ if test -n "$CPP" && test -d "$CPP"; then
   CPP=
 fi
 if test -z "$CPP"; then
-  if test "${ac_cv_prog_CPP+set}" = set; then :
+  if ${ac_cv_prog_CPP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
       # Double quotes because CPP needs to be expanded
@@ -3429,7 +3460,7 @@ else
   # Broken: fails on valid input.
 continue
 fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
 
   # OK, works on sane cases.  Now check whether nonexistent headers
   # can be detected and how.
@@ -3445,11 +3476,11 @@ else
 ac_preproc_ok=:
 break
 fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
 
 done
 # Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.i conftest.err conftest.$ac_ext
 if $ac_preproc_ok; then :
   break
 fi
@@ -3488,7 +3519,7 @@ else
   # Broken: fails on valid input.
 continue
 fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
 
   # OK, works on sane cases.  Now check whether nonexistent headers
   # can be detected and how.
@@ -3504,18 +3535,18 @@ else
 ac_preproc_ok=:
 break
 fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
 
 done
 # Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.i conftest.err conftest.$ac_ext
 if $ac_preproc_ok; then :
 
 else
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 ac_ext=c
@@ -3527,7 +3558,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
 $as_echo_n "checking for grep that handles long lines and -e... " >&6; }
-if test "${ac_cv_path_GREP+set}" = set; then :
+if ${ac_cv_path_GREP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -z "$GREP"; then
@@ -3541,7 +3572,7 @@ do
     for ac_prog in grep ggrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
-      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+      as_fn_executable_p "$ac_path_GREP" || continue
 # Check for GNU ac_path_GREP and select it if it is found.
   # Check for GNU $ac_path_GREP
 case `"$ac_path_GREP" --version 2>&1` in
@@ -3576,7 +3607,7 @@ esac
   done
 IFS=$as_save_IFS
   if test -z "$ac_cv_path_GREP"; then
-    as_fn_error "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
   fi
 else
   ac_cv_path_GREP=$GREP
@@ -3590,7 +3621,7 @@ $as_echo "$ac_cv_path_GREP" >&6; }
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
 $as_echo_n "checking for egrep... " >&6; }
-if test "${ac_cv_path_EGREP+set}" = set; then :
+if ${ac_cv_path_EGREP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
@@ -3607,7 +3638,7 @@ do
     for ac_prog in egrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
-      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+      as_fn_executable_p "$ac_path_EGREP" || continue
 # Check for GNU ac_path_EGREP and select it if it is found.
   # Check for GNU $ac_path_EGREP
 case `"$ac_path_EGREP" --version 2>&1` in
@@ -3642,7 +3673,7 @@ esac
   done
 IFS=$as_save_IFS
   if test -z "$ac_cv_path_EGREP"; then
-    as_fn_error "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
   fi
 else
   ac_cv_path_EGREP=$EGREP
@@ -3666,7 +3697,7 @@ fi
 rm -f conftest*
  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing strerror" >&5
 $as_echo_n "checking for library containing strerror... " >&6; }
-if test "${ac_cv_search_strerror+set}" = set; then :
+if ${ac_cv_search_strerror+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -3700,11 +3731,11 @@ for ac_lib in '' cposix; do
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_strerror+set}" = set; then :
+  if ${ac_cv_search_strerror+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_strerror+set}" = set; then :
+if ${ac_cv_search_strerror+:} false; then :
 
 else
   ac_cv_search_strerror=no
@@ -3725,7 +3756,7 @@ do
 set dummy $ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_AWK+set}" = set; then :
+if ${ac_cv_prog_AWK+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$AWK"; then
@@ -3737,7 +3768,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_AWK="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3765,7 +3796,7 @@ done
 set dummy strip; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_STRIP+set}" = set; then :
+if ${ac_cv_prog_STRIP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$STRIP"; then
@@ -3777,7 +3808,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_STRIP="strip"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3804,7 +3835,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
 $as_echo_n "checking for ANSI C header files... " >&6; }
-if test "${ac_cv_header_stdc+set}" = set; then :
+if ${ac_cv_header_stdc+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3916,7 +3947,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sys/wait.h that is POSIX.1 compatible" >&5
 $as_echo_n "checking for sys/wait.h that is POSIX.1 compatible... " >&6; }
-if test "${ac_cv_header_sys_wait_h+set}" = set; then :
+if ${ac_cv_header_sys_wait_h+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -4107,7 +4138,7 @@ fi
 set dummy xcode-select; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_XCODE_SELECT+set}" = set; then :
+if ${ac_cv_path_XCODE_SELECT+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $XCODE_SELECT in
@@ -4121,7 +4152,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_XCODE_SELECT="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4230,8 +4261,7 @@ do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
 "
-eval as_val=\$$as_ac_Header
-   if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
@@ -4242,7 +4272,7 @@ done
 
 
 ac_fn_c_check_header_mongrel "$LINENO" "Carbon/Carbon.h" "ac_cv_header_Carbon_Carbon_h" "$ac_includes_default"
-if test "x$ac_cv_header_Carbon_Carbon_h" = x""yes; then :
+if test "x$ac_cv_header_Carbon_Carbon_h" = xyes; then :
   CARBON=yes
 fi
 
@@ -4266,7 +4296,7 @@ fi
 for ac_header in AvailabilityMacros.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "AvailabilityMacros.h" "ac_cv_header_AvailabilityMacros_h" "$ac_includes_default"
-if test "x$ac_cv_header_AvailabilityMacros_h" = x""yes; then :
+if test "x$ac_cv_header_AvailabilityMacros_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_AVAILABILITYMACROS_H 1
 _ACEOF
@@ -4296,7 +4326,7 @@ if test "${with_local_dir+set}" = set; then :
       have_local_include=yes
       have_local_lib=yes
       ;;
-    *) as_fn_error "must pass path argument to --with-local-dir" "$LINENO" 5 ;;
+    *) as_fn_error $? "must pass path argument to --with-local-dir" "$LINENO" 5 ;;
     esac
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $local_dir" >&5
 $as_echo "$local_dir" >&6; }
@@ -4505,7 +4535,7 @@ if test "$enable_selinux" = "yes"; then
 $as_echo "no" >&6; }
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for is_selinux_enabled in -lselinux" >&5
 $as_echo_n "checking for is_selinux_enabled in -lselinux... " >&6; }
-if test "${ac_cv_lib_selinux_is_selinux_enabled+set}" = set; then :
+if ${ac_cv_lib_selinux_is_selinux_enabled+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -4539,7 +4569,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_selinux_is_selinux_enabled" >&5
 $as_echo "$ac_cv_lib_selinux_is_selinux_enabled" >&6; }
-if test "x$ac_cv_lib_selinux_is_selinux_enabled" = x""yes; then :
+if test "x$ac_cv_lib_selinux_is_selinux_enabled" = xyes; then :
   LIBS="$LIBS -lselinux"
 	   $as_echo "#define HAVE_SELINUX 1" >>confdefs.h
 
@@ -4701,7 +4731,7 @@ $as_echo "$vi_cv_with_luajit" >&6; }
 set dummy luajit; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_luajit+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_luajit+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_luajit in
@@ -4715,7 +4745,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_luajit="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4740,7 +4770,7 @@ fi
       if test "X$vi_cv_path_luajit" != "X"; then
 		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking LuaJIT version" >&5
 $as_echo_n "checking LuaJIT version... " >&6; }
-if test "${vi_cv_version_luajit+set}" = set; then :
+if ${vi_cv_version_luajit+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_version_luajit=`${vi_cv_path_luajit} -v 2>&1 | sed 's/LuaJIT \([0-9.]*\)\.[0-9]\(-[a-z0-9]*\)* .*/\1/'`
@@ -4749,7 +4779,7 @@ fi
 $as_echo "$vi_cv_version_luajit" >&6; }
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking Lua version of LuaJIT" >&5
 $as_echo_n "checking Lua version of LuaJIT... " >&6; }
-if test "${vi_cv_version_lua_luajit+set}" = set; then :
+if ${vi_cv_version_lua_luajit+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_version_lua_luajit=`${vi_cv_path_luajit} -e "print(_VERSION)" | sed 's/.* //'`
@@ -4764,7 +4794,7 @@ $as_echo "$vi_cv_version_lua_luajit" >&6; }
 set dummy lua; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_plain_lua+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_plain_lua+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_plain_lua in
@@ -4778,7 +4808,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_plain_lua="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4803,7 +4833,7 @@ fi
       if test "X$vi_cv_path_plain_lua" != "X"; then
 		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking Lua version" >&5
 $as_echo_n "checking Lua version... " >&6; }
-if test "${vi_cv_version_plain_lua+set}" = set; then :
+if ${vi_cv_version_plain_lua+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_version_plain_lua=`${vi_cv_path_plain_lua} -e "print(_VERSION)" | sed 's/.* //'`
@@ -4963,7 +4993,7 @@ $as_echo "yes" >&6; }
     fi
   fi
   if test "$fail_if_missing" = "yes" -a "$lua_ok" != "yes"; then
-    as_fn_error "could not configure lua" "$LINENO" 5
+    as_fn_error $? "could not configure lua" "$LINENO" 5
   fi
 
 
@@ -5017,7 +5047,7 @@ $as_echo "not set" >&6; }
 set dummy mzscheme; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_mzscheme+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_mzscheme+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_mzscheme in
@@ -5031,7 +5061,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_mzscheme="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5064,7 +5094,7 @@ fi
 	if test "X$vi_cv_path_mzscheme" != "X"; then
 	    	    { $as_echo "$as_me:${as_lineno-$LINENO}: checking MzScheme install prefix" >&5
 $as_echo_n "checking MzScheme install prefix... " >&6; }
-if test "${vi_cv_path_mzscheme_pfx+set}" = set; then :
+if ${vi_cv_path_mzscheme_pfx+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   	    	    echo "(display (simplify-path		\
@@ -5226,7 +5256,7 @@ $as_echo "not needed" >&6; }
 
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ffi_type_void in -lffi" >&5
 $as_echo_n "checking for ffi_type_void in -lffi... " >&6; }
-if test "${ac_cv_lib_ffi_ffi_type_void+set}" = set; then :
+if ${ac_cv_lib_ffi_ffi_type_void+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -5260,7 +5290,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ffi_ffi_type_void" >&5
 $as_echo "$ac_cv_lib_ffi_ffi_type_void" >&6; }
-if test "x$ac_cv_lib_ffi_ffi_type_void" = x""yes; then :
+if test "x$ac_cv_lib_ffi_ffi_type_void" = xyes; then :
   MZSCHEME_LIBS="$MZSCHEME_LIBS -lffi"
 fi
 
@@ -5336,7 +5366,7 @@ if test "$enable_perlinterp" = "yes" -o "$enable_perlinterp" = "dynamic"; then
 set dummy perl; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_perl+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_perl+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_perl in
@@ -5350,7 +5380,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_perl="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5498,7 +5528,7 @@ $as_echo ">>> too old; need Perl version 5.003_01 or later <<<" >&6; }
   fi
 
   if test "$fail_if_missing" = "yes" -a "$perl_ok" != "yes"; then
-    as_fn_error "could not configure perl" "$LINENO" 5
+    as_fn_error $? "could not configure perl" "$LINENO" 5
   fi
 fi
 
@@ -5526,7 +5556,7 @@ do
 set dummy $ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_python+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_python+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_python in
@@ -5540,7 +5570,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_python="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5569,7 +5599,7 @@ done
 
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python version" >&5
 $as_echo_n "checking Python version... " >&6; }
-if test "${vi_cv_var_python_version+set}" = set; then :
+if ${vi_cv_var_python_version+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   vi_cv_var_python_version=`
@@ -5589,7 +5619,7 @@ $as_echo "yep" >&6; }
 
             { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python's install prefix" >&5
 $as_echo_n "checking Python's install prefix... " >&6; }
-if test "${vi_cv_path_python_pfx+set}" = set; then :
+if ${vi_cv_path_python_pfx+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_path_python_pfx=`
@@ -5601,7 +5631,7 @@ $as_echo "$vi_cv_path_python_pfx" >&6; }
 
             { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python's execution prefix" >&5
 $as_echo_n "checking Python's execution prefix... " >&6; }
-if test "${vi_cv_path_python_epfx+set}" = set; then :
+if ${vi_cv_path_python_epfx+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_path_python_epfx=`
@@ -5612,7 +5642,7 @@ fi
 $as_echo "$vi_cv_path_python_epfx" >&6; }
 
 
-      if test "${vi_cv_path_pythonpath+set}" = set; then :
+      if ${vi_cv_path_pythonpath+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_path_pythonpath=`
@@ -5632,7 +5662,7 @@ fi
 
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python's configuration directory" >&5
 $as_echo_n "checking Python's configuration directory... " >&6; }
-if test "${vi_cv_path_python_conf+set}" = set; then :
+if ${vi_cv_path_python_conf+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
@@ -5662,7 +5692,7 @@ $as_echo "$vi_cv_path_python_conf" >&6; }
 $as_echo "can't find it!" >&6; }
       else
 
-			if test "${vi_cv_path_python_plibs+set}" = set; then :
+			if ${vi_cv_path_python_plibs+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
@@ -5803,7 +5833,7 @@ $as_echo "too old" >&6; }
   fi
 
   if test "$fail_if_missing" = "yes" -a "$python_ok" != "yes"; then
-    as_fn_error "could not configure python" "$LINENO" 5
+    as_fn_error $? "could not configure python" "$LINENO" 5
   fi
 fi
 
@@ -5833,7 +5863,7 @@ do
 set dummy $ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_python3+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_python3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_python3 in
@@ -5847,7 +5877,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_python3="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5876,7 +5906,7 @@ done
 
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python version" >&5
 $as_echo_n "checking Python version... " >&6; }
-if test "${vi_cv_var_python3_version+set}" = set; then :
+if ${vi_cv_var_python3_version+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   vi_cv_var_python3_version=`
@@ -5896,7 +5926,7 @@ $as_echo "yep" >&6; }
 
             { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python's abiflags" >&5
 $as_echo_n "checking Python's abiflags... " >&6; }
-if test "${vi_cv_var_python3_abiflags+set}" = set; then :
+if ${vi_cv_var_python3_abiflags+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
@@ -5913,7 +5943,7 @@ $as_echo "$vi_cv_var_python3_abiflags" >&6; }
 
             { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python's install prefix" >&5
 $as_echo_n "checking Python's install prefix... " >&6; }
-if test "${vi_cv_path_python3_pfx+set}" = set; then :
+if ${vi_cv_path_python3_pfx+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_path_python3_pfx=`
@@ -5925,7 +5955,7 @@ $as_echo "$vi_cv_path_python3_pfx" >&6; }
 
             { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python's execution prefix" >&5
 $as_echo_n "checking Python's execution prefix... " >&6; }
-if test "${vi_cv_path_python3_epfx+set}" = set; then :
+if ${vi_cv_path_python3_epfx+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_path_python3_epfx=`
@@ -5936,7 +5966,7 @@ fi
 $as_echo "$vi_cv_path_python3_epfx" >&6; }
 
 
-      if test "${vi_cv_path_python3path+set}" = set; then :
+      if ${vi_cv_path_python3path+:} false; then :
   $as_echo_n "(cached) " >&6
 else
    vi_cv_path_python3path=`
@@ -5956,7 +5986,7 @@ fi
 
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking Python's configuration directory" >&5
 $as_echo_n "checking Python's configuration directory... " >&6; }
-if test "${vi_cv_path_python3_conf+set}" = set; then :
+if ${vi_cv_path_python3_conf+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
@@ -5987,7 +6017,7 @@ $as_echo "$vi_cv_path_python3_conf" >&6; }
 $as_echo "can't find it!" >&6; }
       else
 
-                        if test "${vi_cv_path_python3_plibs+set}" = set; then :
+                        if ${vi_cv_path_python3_plibs+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
@@ -6114,7 +6144,7 @@ $as_echo "too old" >&6; }
     fi
   fi
   if test "$fail_if_missing" = "yes" -a "$python3_ok" != "yes"; then
-    as_fn_error "could not configure python3" "$LINENO" 5
+    as_fn_error $? "could not configure python3" "$LINENO" 5
   fi
 fi
 
@@ -6138,8 +6168,8 @@ $as_echo_n "checking whether we can do without RTLD_GLOBAL for Python... " >&6;
   if test "$cross_compiling" = yes; then :
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot run test program while cross compiling
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "cannot run test program while cross compiling
+See \`config.log' for more details" "$LINENO" 5; }
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -6203,8 +6233,8 @@ $as_echo_n "checking whether we can do without RTLD_GLOBAL for Python3... " >&6;
   if test "$cross_compiling" = yes; then :
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error "cannot run test program while cross compiling
-See \`config.log' for more details." "$LINENO" 5; }
+as_fn_error $? "cannot run test program while cross compiling
+See \`config.log' for more details" "$LINENO" 5; }
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -6378,7 +6408,7 @@ fi
 set dummy $tclsh_name; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_tcl+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_tcl+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_tcl in
@@ -6392,7 +6422,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_tcl="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6422,7 +6452,7 @@ fi
 set dummy $tclsh_name; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_tcl+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_tcl+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_tcl in
@@ -6436,7 +6466,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_tcl="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6465,7 +6495,7 @@ fi
 set dummy $tclsh_name; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_tcl+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_tcl+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_tcl in
@@ -6479,7 +6509,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_tcl="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6508,7 +6538,7 @@ fi
 set dummy $tclsh_name; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_tcl+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_tcl+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_tcl in
@@ -6522,7 +6552,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_tcl="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6551,7 +6581,7 @@ fi
 set dummy $tclsh_name; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_tcl+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_tcl+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_tcl in
@@ -6565,7 +6595,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_tcl="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6682,7 +6712,7 @@ $as_echo "too old; need Tcl version 8.0 or later" >&6; }
     fi
   fi
   if test "$fail_if_missing" = "yes" -a -z "$TCL_SRC"; then
-    as_fn_error "could not configure Tcl" "$LINENO" 5
+    as_fn_error $? "could not configure Tcl" "$LINENO" 5
   fi
 fi
 
@@ -6720,7 +6750,7 @@ fi
 set dummy $RUBY_CMD; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_vi_cv_path_ruby+set}" = set; then :
+if ${ac_cv_path_vi_cv_path_ruby+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $vi_cv_path_ruby in
@@ -6734,7 +6764,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_vi_cv_path_ruby="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6836,7 +6866,7 @@ $as_echo "too old; need Ruby version 1.6.0 or later" >&6; }
   fi
 
   if test "$fail_if_missing" = "yes" -a -z "$RUBY_OBJ"; then
-    as_fn_error "could not configure Ruby" "$LINENO" 5
+    as_fn_error $? "could not configure Ruby" "$LINENO" 5
   fi
 fi
 
@@ -6898,7 +6928,7 @@ if test "$enable_netbeans" = "yes"; then
 $as_echo "no" >&6; }
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for socket in -lsocket" >&5
 $as_echo_n "checking for socket in -lsocket... " >&6; }
-if test "${ac_cv_lib_socket_socket+set}" = set; then :
+if ${ac_cv_lib_socket_socket+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6932,7 +6962,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_socket" >&5
 $as_echo "$ac_cv_lib_socket_socket" >&6; }
-if test "x$ac_cv_lib_socket_socket" = x""yes; then :
+if test "x$ac_cv_lib_socket_socket" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_LIBSOCKET 1
 _ACEOF
@@ -6943,7 +6973,7 @@ fi
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname in -lnsl" >&5
 $as_echo_n "checking for gethostbyname in -lnsl... " >&6; }
-if test "${ac_cv_lib_nsl_gethostbyname+set}" = set; then :
+if ${ac_cv_lib_nsl_gethostbyname+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6977,7 +7007,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nsl_gethostbyname" >&5
 $as_echo "$ac_cv_lib_nsl_gethostbyname" >&6; }
-if test "x$ac_cv_lib_nsl_gethostbyname" = x""yes; then :
+if test "x$ac_cv_lib_nsl_gethostbyname" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_LIBNSL 1
 _ACEOF
@@ -7127,7 +7157,7 @@ else
 set dummy xmkmf; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_xmkmfpath+set}" = set; then :
+if ${ac_cv_path_xmkmfpath+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $xmkmfpath in
@@ -7141,7 +7171,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_xmkmfpath="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -7179,8 +7209,8 @@ if test "x$with_x" = xno; then
   have_x=disabled
 else
   case $x_includes,$x_libraries in #(
-    *\'*) as_fn_error "cannot use X directory names containing '" "$LINENO" 5;; #(
-    *,NONE | NONE,*) if test "${ac_cv_have_x+set}" = set; then :
+    *\'*) as_fn_error $? "cannot use X directory names containing '" "$LINENO" 5;; #(
+    *,NONE | NONE,*) if ${ac_cv_have_x+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   # One or both of the vars are not set, and there is no cached value.
@@ -7197,7 +7227,7 @@ libdir:
 	@echo libdir='${LIBDIR}'
 _ACEOF
   if (export CC; ${XMKMF-xmkmf}) >/dev/null 2>/dev/null && test -f Makefile; then
-    # GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+    # GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
     for ac_var in incroot usrlibdir libdir; do
       eval "ac_im_$ac_var=\`\${MAKE-make} $ac_var 2>/dev/null | sed -n 's/^$ac_var=//p'\`"
     done
@@ -7283,7 +7313,7 @@ else
   fi
 done
 fi
-rm -f conftest.err conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
 fi # $ac_x_includes = no
 
 if test "$ac_x_libraries" = no; then
@@ -7457,7 +7487,7 @@ if ac_fn_c_try_link "$LINENO"; then :
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dnet_ntoa in -ldnet" >&5
 $as_echo_n "checking for dnet_ntoa in -ldnet... " >&6; }
-if test "${ac_cv_lib_dnet_dnet_ntoa+set}" = set; then :
+if ${ac_cv_lib_dnet_dnet_ntoa+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7491,14 +7521,14 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dnet_dnet_ntoa" >&5
 $as_echo "$ac_cv_lib_dnet_dnet_ntoa" >&6; }
-if test "x$ac_cv_lib_dnet_dnet_ntoa" = x""yes; then :
+if test "x$ac_cv_lib_dnet_dnet_ntoa" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"
 fi
 
     if test $ac_cv_lib_dnet_dnet_ntoa = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dnet_ntoa in -ldnet_stub" >&5
 $as_echo_n "checking for dnet_ntoa in -ldnet_stub... " >&6; }
-if test "${ac_cv_lib_dnet_stub_dnet_ntoa+set}" = set; then :
+if ${ac_cv_lib_dnet_stub_dnet_ntoa+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7532,7 +7562,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dnet_stub_dnet_ntoa" >&5
 $as_echo "$ac_cv_lib_dnet_stub_dnet_ntoa" >&6; }
-if test "x$ac_cv_lib_dnet_stub_dnet_ntoa" = x""yes; then :
+if test "x$ac_cv_lib_dnet_stub_dnet_ntoa" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"
 fi
 
@@ -7551,14 +7581,14 @@ rm -f core conftest.err conftest.$ac_objext \
     # The functions gethostbyname, getservbyname, and inet_addr are
     # in -lbsd on LynxOS 3.0.1/i386, according to Lars Hecking.
     ac_fn_c_check_func "$LINENO" "gethostbyname" "ac_cv_func_gethostbyname"
-if test "x$ac_cv_func_gethostbyname" = x""yes; then :
+if test "x$ac_cv_func_gethostbyname" = xyes; then :
 
 fi
 
     if test $ac_cv_func_gethostbyname = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname in -lnsl" >&5
 $as_echo_n "checking for gethostbyname in -lnsl... " >&6; }
-if test "${ac_cv_lib_nsl_gethostbyname+set}" = set; then :
+if ${ac_cv_lib_nsl_gethostbyname+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7592,14 +7622,14 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nsl_gethostbyname" >&5
 $as_echo "$ac_cv_lib_nsl_gethostbyname" >&6; }
-if test "x$ac_cv_lib_nsl_gethostbyname" = x""yes; then :
+if test "x$ac_cv_lib_nsl_gethostbyname" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl"
 fi
 
       if test $ac_cv_lib_nsl_gethostbyname = no; then
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname in -lbsd" >&5
 $as_echo_n "checking for gethostbyname in -lbsd... " >&6; }
-if test "${ac_cv_lib_bsd_gethostbyname+set}" = set; then :
+if ${ac_cv_lib_bsd_gethostbyname+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7633,7 +7663,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_gethostbyname" >&5
 $as_echo "$ac_cv_lib_bsd_gethostbyname" >&6; }
-if test "x$ac_cv_lib_bsd_gethostbyname" = x""yes; then :
+if test "x$ac_cv_lib_bsd_gethostbyname" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lbsd"
 fi
 
@@ -7648,14 +7678,14 @@ fi
     # must be given before -lnsl if both are needed.  We assume that
     # if connect needs -lnsl, so does gethostbyname.
     ac_fn_c_check_func "$LINENO" "connect" "ac_cv_func_connect"
-if test "x$ac_cv_func_connect" = x""yes; then :
+if test "x$ac_cv_func_connect" = xyes; then :
 
 fi
 
     if test $ac_cv_func_connect = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for connect in -lsocket" >&5
 $as_echo_n "checking for connect in -lsocket... " >&6; }
-if test "${ac_cv_lib_socket_connect+set}" = set; then :
+if ${ac_cv_lib_socket_connect+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7689,7 +7719,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_connect" >&5
 $as_echo "$ac_cv_lib_socket_connect" >&6; }
-if test "x$ac_cv_lib_socket_connect" = x""yes; then :
+if test "x$ac_cv_lib_socket_connect" = xyes; then :
   X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS"
 fi
 
@@ -7697,14 +7727,14 @@ fi
 
     # Guillermo Gomez says -lposix is necessary on A/UX.
     ac_fn_c_check_func "$LINENO" "remove" "ac_cv_func_remove"
-if test "x$ac_cv_func_remove" = x""yes; then :
+if test "x$ac_cv_func_remove" = xyes; then :
 
 fi
 
     if test $ac_cv_func_remove = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for remove in -lposix" >&5
 $as_echo_n "checking for remove in -lposix... " >&6; }
-if test "${ac_cv_lib_posix_remove+set}" = set; then :
+if ${ac_cv_lib_posix_remove+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7738,7 +7768,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_posix_remove" >&5
 $as_echo "$ac_cv_lib_posix_remove" >&6; }
-if test "x$ac_cv_lib_posix_remove" = x""yes; then :
+if test "x$ac_cv_lib_posix_remove" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix"
 fi
 
@@ -7746,14 +7776,14 @@ fi
 
     # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay.
     ac_fn_c_check_func "$LINENO" "shmat" "ac_cv_func_shmat"
-if test "x$ac_cv_func_shmat" = x""yes; then :
+if test "x$ac_cv_func_shmat" = xyes; then :
 
 fi
 
     if test $ac_cv_func_shmat = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shmat in -lipc" >&5
 $as_echo_n "checking for shmat in -lipc... " >&6; }
-if test "${ac_cv_lib_ipc_shmat+set}" = set; then :
+if ${ac_cv_lib_ipc_shmat+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7787,7 +7817,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ipc_shmat" >&5
 $as_echo "$ac_cv_lib_ipc_shmat" >&6; }
-if test "x$ac_cv_lib_ipc_shmat" = x""yes; then :
+if test "x$ac_cv_lib_ipc_shmat" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc"
 fi
 
@@ -7805,7 +7835,7 @@ fi
   # John Interrante, Karl Berry
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for IceConnectionNumber in -lICE" >&5
 $as_echo_n "checking for IceConnectionNumber in -lICE... " >&6; }
-if test "${ac_cv_lib_ICE_IceConnectionNumber+set}" = set; then :
+if ${ac_cv_lib_ICE_IceConnectionNumber+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7839,7 +7869,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ICE_IceConnectionNumber" >&5
 $as_echo "$ac_cv_lib_ICE_IceConnectionNumber" >&6; }
-if test "x$ac_cv_lib_ICE_IceConnectionNumber" = x""yes; then :
+if test "x$ac_cv_lib_ICE_IceConnectionNumber" = xyes; then :
   X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"
 fi
 
@@ -7917,7 +7947,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
             { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _XdmcpAuthDoIt in -lXdmcp" >&5
 $as_echo_n "checking for _XdmcpAuthDoIt in -lXdmcp... " >&6; }
-if test "${ac_cv_lib_Xdmcp__XdmcpAuthDoIt+set}" = set; then :
+if ${ac_cv_lib_Xdmcp__XdmcpAuthDoIt+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7951,14 +7981,14 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_Xdmcp__XdmcpAuthDoIt" >&5
 $as_echo "$ac_cv_lib_Xdmcp__XdmcpAuthDoIt" >&6; }
-if test "x$ac_cv_lib_Xdmcp__XdmcpAuthDoIt" = x""yes; then :
+if test "x$ac_cv_lib_Xdmcp__XdmcpAuthDoIt" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lXdmcp"
 fi
 
 
                     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for IceOpenConnection in -lICE" >&5
 $as_echo_n "checking for IceOpenConnection in -lICE... " >&6; }
-if test "${ac_cv_lib_ICE_IceOpenConnection+set}" = set; then :
+if ${ac_cv_lib_ICE_IceOpenConnection+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7992,7 +8022,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ICE_IceOpenConnection" >&5
 $as_echo "$ac_cv_lib_ICE_IceOpenConnection" >&6; }
-if test "x$ac_cv_lib_ICE_IceOpenConnection" = x""yes; then :
+if test "x$ac_cv_lib_ICE_IceOpenConnection" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lSM -lICE"
 fi
 
@@ -8000,7 +8030,7 @@ fi
         LDFLAGS="$X_LIBS $ac_save_LDFLAGS"
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for XpmCreatePixmapFromData in -lXpm" >&5
 $as_echo_n "checking for XpmCreatePixmapFromData in -lXpm... " >&6; }
-if test "${ac_cv_lib_Xpm_XpmCreatePixmapFromData+set}" = set; then :
+if ${ac_cv_lib_Xpm_XpmCreatePixmapFromData+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -8034,7 +8064,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_Xpm_XpmCreatePixmapFromData" >&5
 $as_echo "$ac_cv_lib_Xpm_XpmCreatePixmapFromData" >&6; }
-if test "x$ac_cv_lib_Xpm_XpmCreatePixmapFromData" = x""yes; then :
+if test "x$ac_cv_lib_Xpm_XpmCreatePixmapFromData" = xyes; then :
   X_PRE_LIBS="$X_PRE_LIBS -lXpm"
 fi
 
@@ -8092,11 +8122,11 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of wchar_t is 2 bytes" >&5
 $as_echo_n "checking size of wchar_t is 2 bytes... " >&6; }
-    if test "${ac_cv_small_wchar_t+set}" = set; then :
+    if ${ac_cv_small_wchar_t+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test "$cross_compiling" = yes; then :
-  as_fn_error "failed to compile test program" "$LINENO" 5
+  as_fn_error $? "failed to compile test program" "$LINENO" 5
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -8395,7 +8425,7 @@ $as_echo "gtk test disabled" >&6; }
 set dummy pkg-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $PKG_CONFIG in
@@ -8409,7 +8439,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -8634,7 +8664,7 @@ $as_echo "no" >&6; }
       { $as_echo "$as_me:${as_lineno-$LINENO}: result: not found" >&5
 $as_echo "not found" >&6; }
       if test "x" = xfail; then
-	as_fn_error "Could not find libgnomeui-2.0 via pkg-config" "$LINENO" 5
+	as_fn_error $? "Could not find libgnomeui-2.0 via pkg-config" "$LINENO" 5
       fi
     fi
   }
@@ -8827,7 +8857,7 @@ if test -z "$SKIP_ATHENA" -o -z "$SKIP_NEXTAW" -o -z "$SKIP_MOTIF"; then
   LDFLAGS="$X_LIBS $LDFLAGS"
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for XShapeQueryExtension in -lXext" >&5
 $as_echo_n "checking for XShapeQueryExtension in -lXext... " >&6; }
-if test "${ac_cv_lib_Xext_XShapeQueryExtension+set}" = set; then :
+if ${ac_cv_lib_Xext_XShapeQueryExtension+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -8861,13 +8891,13 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_Xext_XShapeQueryExtension" >&5
 $as_echo "$ac_cv_lib_Xext_XShapeQueryExtension" >&6; }
-if test "x$ac_cv_lib_Xext_XShapeQueryExtension" = x""yes; then :
+if test "x$ac_cv_lib_Xext_XShapeQueryExtension" = xyes; then :
   GUI_X_LIBS="-lXext"
 fi
 
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for wslen in -lw" >&5
 $as_echo_n "checking for wslen in -lw... " >&6; }
-if test "${ac_cv_lib_w_wslen+set}" = set; then :
+if ${ac_cv_lib_w_wslen+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -8901,13 +8931,13 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_w_wslen" >&5
 $as_echo "$ac_cv_lib_w_wslen" >&6; }
-if test "x$ac_cv_lib_w_wslen" = x""yes; then :
+if test "x$ac_cv_lib_w_wslen" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lw"
 fi
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlsym in -ldl" >&5
 $as_echo_n "checking for dlsym in -ldl... " >&6; }
-if test "${ac_cv_lib_dl_dlsym+set}" = set; then :
+if ${ac_cv_lib_dl_dlsym+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -8941,13 +8971,13 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlsym" >&5
 $as_echo "$ac_cv_lib_dl_dlsym" >&6; }
-if test "x$ac_cv_lib_dl_dlsym" = x""yes; then :
+if test "x$ac_cv_lib_dl_dlsym" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -ldl"
 fi
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for XmuCreateStippledPixmap in -lXmu" >&5
 $as_echo_n "checking for XmuCreateStippledPixmap in -lXmu... " >&6; }
-if test "${ac_cv_lib_Xmu_XmuCreateStippledPixmap+set}" = set; then :
+if ${ac_cv_lib_Xmu_XmuCreateStippledPixmap+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -8981,14 +9011,14 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_Xmu_XmuCreateStippledPixmap" >&5
 $as_echo "$ac_cv_lib_Xmu_XmuCreateStippledPixmap" >&6; }
-if test "x$ac_cv_lib_Xmu_XmuCreateStippledPixmap" = x""yes; then :
+if test "x$ac_cv_lib_Xmu_XmuCreateStippledPixmap" = xyes; then :
   GUI_X_LIBS="-lXmu $GUI_X_LIBS"
 fi
 
   if test -z "$SKIP_MOTIF"; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for XpEndJob in -lXp" >&5
 $as_echo_n "checking for XpEndJob in -lXp... " >&6; }
-if test "${ac_cv_lib_Xp_XpEndJob+set}" = set; then :
+if ${ac_cv_lib_Xp_XpEndJob+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -9022,7 +9052,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_Xp_XpEndJob" >&5
 $as_echo "$ac_cv_lib_Xp_XpEndJob" >&6; }
-if test "x$ac_cv_lib_Xp_XpEndJob" = x""yes; then :
+if test "x$ac_cv_lib_Xp_XpEndJob" = xyes; then :
   GUI_X_LIBS="-lXp $GUI_X_LIBS"
 fi
 
@@ -9061,7 +9091,7 @@ if test "$enable_xsmp" = "yes"; then
   for ac_header in X11/SM/SMlib.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "X11/SM/SMlib.h" "ac_cv_header_X11_SM_SMlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_X11_SM_SMlib_h" = x""yes; then :
+if test "x$ac_cv_header_X11_SM_SMlib_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_X11_SM_SMLIB_H 1
 _ACEOF
@@ -9081,8 +9111,7 @@ if test -z "$SKIP_ATHENA" -o -z "$SKIP_NEXTAW" -o -z "$SKIP_MOTIF" -o -z "$SKIP_
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-eval as_val=\$$as_ac_Header
-   if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
@@ -9164,8 +9193,7 @@ if test -z "$SKIP_MOTIF"; then
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-eval as_val=\$$as_ac_Header
-   if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
@@ -9233,7 +9261,7 @@ fi
 
 
 if test "$enable_workshop" = "yes" -a -n "$SKIP_MOTIF"; then
-  as_fn_error "cannot use workshop without Motif" "$LINENO" 5
+  as_fn_error $? "cannot use workshop without Motif" "$LINENO" 5
 fi
 
 if test "$enable_xim" = "yes"; then
@@ -9287,13 +9315,13 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether toupper is broken" >&5
 $as_echo_n "checking whether toupper is broken... " >&6; }
-if test "${vim_cv_toupper_broken+set}" = set; then :
+if ${vim_cv_toupper_broken+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
     if test "$cross_compiling" = yes; then :
 
-    as_fn_error "cross-compiling: please set 'vim_cv_toupper_broken'" "$LINENO" 5
+    as_fn_error $? "cross-compiling: please set 'vim_cv_toupper_broken'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -9377,7 +9405,7 @@ fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 ac_fn_c_check_header_mongrel "$LINENO" "elf.h" "ac_cv_header_elf_h" "$ac_includes_default"
-if test "x$ac_cv_header_elf_h" = x""yes; then :
+if test "x$ac_cv_header_elf_h" = xyes; then :
   HAS_ELF=1
 fi
 
@@ -9385,7 +9413,7 @@ fi
 if test "$HAS_ELF" = 1; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for main in -lelf" >&5
 $as_echo_n "checking for main in -lelf... " >&6; }
-if test "${ac_cv_lib_elf_main+set}" = set; then :
+if ${ac_cv_lib_elf_main+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -9413,7 +9441,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_elf_main" >&5
 $as_echo "$ac_cv_lib_elf_main" >&6; }
-if test "x$ac_cv_lib_elf_main" = x""yes; then :
+if test "x$ac_cv_lib_elf_main" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_LIBELF 1
 _ACEOF
@@ -9429,7 +9457,7 @@ for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
   as_ac_Header=`$as_echo "ac_cv_header_dirent_$ac_hdr" | $as_tr_sh`
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_hdr that defines DIR" >&5
 $as_echo_n "checking for $ac_hdr that defines DIR... " >&6; }
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$as_ac_Header+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -9456,8 +9484,7 @@ fi
 eval ac_res=\$$as_ac_Header
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-eval as_val=\$$as_ac_Header
-   if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
 #define `$as_echo "HAVE_$ac_hdr" | $as_tr_cpp` 1
 _ACEOF
@@ -9470,7 +9497,7 @@ done
 if test $ac_header_dirent = dirent.h; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
 $as_echo_n "checking for library containing opendir... " >&6; }
-if test "${ac_cv_search_opendir+set}" = set; then :
+if ${ac_cv_search_opendir+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -9504,11 +9531,11 @@ for ac_lib in '' dir; do
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_opendir+set}" = set; then :
+  if ${ac_cv_search_opendir+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_opendir+set}" = set; then :
+if ${ac_cv_search_opendir+:} false; then :
 
 else
   ac_cv_search_opendir=no
@@ -9527,7 +9554,7 @@ fi
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing opendir" >&5
 $as_echo_n "checking for library containing opendir... " >&6; }
-if test "${ac_cv_search_opendir+set}" = set; then :
+if ${ac_cv_search_opendir+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -9561,11 +9588,11 @@ for ac_lib in '' x; do
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_opendir+set}" = set; then :
+  if ${ac_cv_search_opendir+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_opendir+set}" = set; then :
+if ${ac_cv_search_opendir+:} false; then :
 
 else
   ac_cv_search_opendir=no
@@ -9625,8 +9652,7 @@ for ac_header in stdarg.h stdint.h stdlib.h string.h \
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-eval as_val=\$$as_ac_Header
-   if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
@@ -9642,7 +9668,7 @@ do :
 #  include <sys/stream.h>
 #endif
 "
-if test "x$ac_cv_header_sys_ptem_h" = x""yes; then :
+if test "x$ac_cv_header_sys_ptem_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_SYS_PTEM_H 1
 _ACEOF
@@ -9658,7 +9684,7 @@ do :
 #  include <sys/param.h>
 #endif
 "
-if test "x$ac_cv_header_sys_sysctl_h" = x""yes; then :
+if test "x$ac_cv_header_sys_sysctl_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_SYS_SYSCTL_H 1
 _ACEOF
@@ -9698,7 +9724,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 for ac_header in strings.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "strings.h" "ac_cv_header_strings_h" "$ac_includes_default"
-if test "x$ac_cv_header_strings_h" = x""yes; then :
+if test "x$ac_cv_header_strings_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_STRINGS_H 1
 _ACEOF
@@ -9757,7 +9783,7 @@ fi
 if test $ac_cv_c_compiler_gnu = yes; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC needs -traditional" >&5
 $as_echo_n "checking whether $CC needs -traditional... " >&6; }
-if test "${ac_cv_prog_gcc_traditional+set}" = set; then :
+if ${ac_cv_prog_gcc_traditional+:} false; then :
   $as_echo_n "(cached) " >&6
 else
     ac_pattern="Autoconf.*'x'"
@@ -9798,7 +9824,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
 $as_echo_n "checking for an ANSI C-conforming const... " >&6; }
-if test "${ac_cv_c_const+set}" = set; then :
+if ${ac_cv_c_const+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -9807,11 +9833,11 @@ else
 int
 main ()
 {
-/* FIXME: Include the comments suggested by Paul. */
+
 #ifndef __cplusplus
-  /* Ultrix mips cc rejects this.  */
+  /* Ultrix mips cc rejects this sort of thing.  */
   typedef int charset[2];
-  const charset cs;
+  const charset cs = { 0, 0 };
   /* SunOS 4.1.1 cc rejects this.  */
   char const *const *pcpcc;
   char **ppc;
@@ -9828,8 +9854,9 @@ main ()
   ++pcpcc;
   ppc = (char**) pcpcc;
   pcpcc = (char const *const *) ppc;
-  { /* SCO 3.2v4 cc rejects this.  */
-    char *t;
+  { /* SCO 3.2v4 cc rejects this sort of thing.  */
+    char tx;
+    char *t = &tx;
     char const *s = 0 ? (char *) 0 : (char const *) 0;
 
     *t++ = 0;
@@ -9845,10 +9872,10 @@ main ()
     iptr p = 0;
     ++p;
   }
-  { /* AIX XL C 1.02.0.0 rejects this saying
+  { /* AIX XL C 1.02.0.0 rejects this sort of thing, 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;
+    struct s { int j; const int *ap[3]; } bx;
+    struct s *b = &bx; b->j = 5;
   }
   { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
     const int foo = 10;
@@ -9878,7 +9905,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working volatile" >&5
 $as_echo_n "checking for working volatile... " >&6; }
-if test "${ac_cv_c_volatile+set}" = set; then :
+if ${ac_cv_c_volatile+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -9911,7 +9938,7 @@ $as_echo "#define volatile /**/" >>confdefs.h
 fi
 
 ac_fn_c_check_type "$LINENO" "mode_t" "ac_cv_type_mode_t" "$ac_includes_default"
-if test "x$ac_cv_type_mode_t" = x""yes; then :
+if test "x$ac_cv_type_mode_t" = xyes; then :
 
 else
 
@@ -9922,7 +9949,7 @@ _ACEOF
 fi
 
 ac_fn_c_check_type "$LINENO" "off_t" "ac_cv_type_off_t" "$ac_includes_default"
-if test "x$ac_cv_type_off_t" = x""yes; then :
+if test "x$ac_cv_type_off_t" = xyes; then :
 
 else
 
@@ -9933,7 +9960,7 @@ _ACEOF
 fi
 
 ac_fn_c_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default"
-if test "x$ac_cv_type_pid_t" = x""yes; then :
+if test "x$ac_cv_type_pid_t" = xyes; then :
 
 else
 
@@ -9944,7 +9971,7 @@ _ACEOF
 fi
 
 ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default"
-if test "x$ac_cv_type_size_t" = x""yes; then :
+if test "x$ac_cv_type_size_t" = xyes; then :
 
 else
 
@@ -9956,7 +9983,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
 $as_echo_n "checking for uid_t in sys/types.h... " >&6; }
-if test "${ac_cv_type_uid_t+set}" = set; then :
+if ${ac_cv_type_uid_t+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -10001,7 +10028,7 @@ _ACEOF
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether time.h and sys/time.h may both be included" >&5
 $as_echo_n "checking whether time.h and sys/time.h may both be included... " >&6; }
-if test "${ac_cv_header_time+set}" = set; then :
+if ${ac_cv_header_time+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -10035,7 +10062,7 @@ $as_echo "#define TIME_WITH_SYS_TIME 1" >>confdefs.h
 fi
 
 ac_fn_c_check_type "$LINENO" "ino_t" "ac_cv_type_ino_t" "$ac_includes_default"
-if test "x$ac_cv_type_ino_t" = x""yes; then :
+if test "x$ac_cv_type_ino_t" = xyes; then :
 
 else
 
@@ -10046,7 +10073,7 @@ _ACEOF
 fi
 
 ac_fn_c_check_type "$LINENO" "dev_t" "ac_cv_type_dev_t" "$ac_includes_default"
-if test "x$ac_cv_type_dev_t" = x""yes; then :
+if test "x$ac_cv_type_dev_t" = xyes; then :
 
 else
 
@@ -10058,7 +10085,7 @@ fi
 
  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
 $as_echo_n "checking whether byte ordering is bigendian... " >&6; }
-if test "${ac_cv_c_bigendian+set}" = set; then :
+if ${ac_cv_c_bigendian+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_cv_c_bigendian=unknown
@@ -10276,7 +10303,7 @@ $as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
 
      ;; #(
    *)
-     as_fn_error "unknown endianness
+     as_fn_error $? "unknown endianness
  presetting ac_cv_c_bigendian=no (or yes) will help" "$LINENO" 5 ;;
  esac
 
@@ -10412,7 +10439,7 @@ if ac_fn_c_try_link "$LINENO"; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: OK" >&5
 $as_echo "OK" >&6; }
 else
-  as_fn_error "FAILED" "$LINENO" 5
+  as_fn_error $? "FAILED" "$LINENO" 5
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
@@ -10428,7 +10455,7 @@ $as_echo "empty: automatic terminal library selection" >&6; }
     as_ac_Lib=`$as_echo "ac_cv_lib_${libname}''_tgetent" | $as_tr_sh`
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for tgetent in -l${libname}" >&5
 $as_echo_n "checking for tgetent in -l${libname}... " >&6; }
-if { as_var=$as_ac_Lib; eval "test \"\${$as_var+set}\" = set"; }; then :
+if eval \${$as_ac_Lib+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -10463,8 +10490,7 @@ fi
 eval ac_res=\$$as_ac_Lib
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-eval as_val=\$$as_ac_Lib
-   if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_Lib"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
 #define `$as_echo "HAVE_LIB${libname}" | $as_tr_cpp` 1
 _ACEOF
@@ -10530,7 +10556,7 @@ if ac_fn_c_try_link "$LINENO"; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
-  as_fn_error "NOT FOUND!
+  as_fn_error $? "NOT FOUND!
       You need to install a terminal library; for example ncurses.
       Or specify the name of the library with --with-tlib." "$LINENO" 5
 fi
@@ -10540,13 +10566,13 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we talk terminfo" >&5
 $as_echo_n "checking whether we talk terminfo... " >&6; }
-if test "${vim_cv_terminfo+set}" = set; then :
+if ${vim_cv_terminfo+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
     if test "$cross_compiling" = yes; then :
 
-      as_fn_error "cross-compiling: please set 'vim_cv_terminfo'" "$LINENO" 5
+      as_fn_error $? "cross-compiling: please set 'vim_cv_terminfo'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -10593,13 +10619,13 @@ fi
 if test "x$olibs" != "x$LIBS"; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking what tgetent() returns for an unknown terminal" >&5
 $as_echo_n "checking what tgetent() returns for an unknown terminal... " >&6; }
-if test "${vim_cv_tgent+set}" = set; then :
+if ${vim_cv_tgent+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
       if test "$cross_compiling" = yes; then :
 
-	as_fn_error "failed to compile test program." "$LINENO" 5
+	as_fn_error $? "failed to compile test program." "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -10894,13 +10920,13 @@ fi
 rm -f conftest_grp
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking default tty permissions/group" >&5
 $as_echo_n "checking default tty permissions/group... " >&6; }
-if test "${vim_cv_tty_group+set}" = set; then :
+if ${vim_cv_tty_group+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
     if test "$cross_compiling" = yes; then :
 
-      as_fn_error "cross-compiling: please set 'vim_cv_tty_group' and 'vim_cv_tty_mode'" "$LINENO" 5
+      as_fn_error $? "cross-compiling: please set 'vim_cv_tty_group' and 'vim_cv_tty_mode'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -10981,7 +11007,7 @@ if test "x$vim_cv_tty_group" != "xworld" ; then
 _ACEOF
 
   if test "x$vim_cv_tty_mode" = "x" ; then
-    as_fn_error "It seems you're cross compiling and have 'vim_cv_tty_group' set, please also set the environment variable 'vim_cv_tty_mode' to the correct mode (probably 0620)" "$LINENO" 5
+    as_fn_error $? "It seems you're cross compiling and have 'vim_cv_tty_group' set, please also set the environment variable 'vim_cv_tty_mode' to the correct mode (probably 0620)" "$LINENO" 5
   else
     $as_echo "#define PTYMODE 0620" >>confdefs.h
 
@@ -10991,7 +11017,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking return type of signal handlers" >&5
 $as_echo_n "checking return type of signal handlers... " >&6; }
-if test "${ac_cv_type_signal+set}" = set; then :
+if ${ac_cv_type_signal+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11064,13 +11090,13 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking getcwd implementation is broken" >&5
 $as_echo_n "checking getcwd implementation is broken... " >&6; }
-if test "${vim_cv_getcwd_broken+set}" = set; then :
+if ${vim_cv_getcwd_broken+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
     if test "$cross_compiling" = yes; then :
 
-      as_fn_error "cross-compiling: please set 'vim_cv_getcwd_broken'" "$LINENO" 5
+      as_fn_error $? "cross-compiling: please set 'vim_cv_getcwd_broken'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11123,8 +11149,7 @@ for ac_func in bcmp fchdir fchown fsync getcwd getpseudotty \
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-eval as_val=\$$as_ac_var
-   if test "x$as_val" = x""yes; then :
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
 #define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
@@ -11134,7 +11159,7 @@ done
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _LARGEFILE_SOURCE value needed for large files" >&5
 $as_echo_n "checking for _LARGEFILE_SOURCE value needed for large files... " >&6; }
-if test "${ac_cv_sys_largefile_source+set}" = set; then :
+if ${ac_cv_sys_largefile_source+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   while :; do
@@ -11210,7 +11235,7 @@ if test "$enable_largefile" != no; then
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for special C compiler options needed for large files" >&5
 $as_echo_n "checking for special C compiler options needed for large files... " >&6; }
-if test "${ac_cv_sys_largefile_CC+set}" = set; then :
+if ${ac_cv_sys_largefile_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_cv_sys_largefile_CC=no
@@ -11261,7 +11286,7 @@ $as_echo "$ac_cv_sys_largefile_CC" >&6; }
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _FILE_OFFSET_BITS value needed for large files" >&5
 $as_echo_n "checking for _FILE_OFFSET_BITS value needed for large files... " >&6; }
-if test "${ac_cv_sys_file_offset_bits+set}" = set; then :
+if ${ac_cv_sys_file_offset_bits+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   while :; do
@@ -11330,7 +11355,7 @@ rm -rf conftest*
   if test $ac_cv_sys_file_offset_bits = unknown; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _LARGE_FILES value needed for large files" >&5
 $as_echo_n "checking for _LARGE_FILES value needed for large files... " >&6; }
-if test "${ac_cv_sys_large_files+set}" = set; then :
+if ${ac_cv_sys_large_files+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   while :; do
@@ -11397,6 +11422,8 @@ _ACEOF
 esac
 rm -rf conftest*
   fi
+
+
 fi
 
 
@@ -11430,13 +11457,13 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stat() ignores a trailing slash" >&5
 $as_echo_n "checking whether stat() ignores a trailing slash... " >&6; }
-if test "${vim_cv_stat_ignores_slash+set}" = set; then :
+if ${vim_cv_stat_ignores_slash+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
     if test "$cross_compiling" = yes; then :
 
-      as_fn_error "cross-compiling: please set 'vim_cv_stat_ignores_slash'" "$LINENO" 5
+      as_fn_error $? "cross-compiling: please set 'vim_cv_stat_ignores_slash'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -11560,7 +11587,7 @@ rm -f core conftest.err conftest.$ac_objext \
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for strtod in -lm" >&5
 $as_echo_n "checking for strtod in -lm... " >&6; }
-if test "${ac_cv_lib_m_strtod+set}" = set; then :
+if ${ac_cv_lib_m_strtod+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -11594,7 +11621,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_strtod" >&5
 $as_echo "$ac_cv_lib_m_strtod" >&6; }
-if test "x$ac_cv_lib_m_strtod" = x""yes; then :
+if test "x$ac_cv_lib_m_strtod" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_LIBM 1
 _ACEOF
@@ -11660,7 +11687,7 @@ if test "$enable_acl" = "yes"; then
 $as_echo "no" >&6; }
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for acl_get_file in -lposix1e" >&5
 $as_echo_n "checking for acl_get_file in -lposix1e... " >&6; }
-if test "${ac_cv_lib_posix1e_acl_get_file+set}" = set; then :
+if ${ac_cv_lib_posix1e_acl_get_file+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -11694,12 +11721,12 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_posix1e_acl_get_file" >&5
 $as_echo "$ac_cv_lib_posix1e_acl_get_file" >&6; }
-if test "x$ac_cv_lib_posix1e_acl_get_file" = x""yes; then :
+if test "x$ac_cv_lib_posix1e_acl_get_file" = xyes; then :
   LIBS="$LIBS -lposix1e"
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for acl_get_file in -lacl" >&5
 $as_echo_n "checking for acl_get_file in -lacl... " >&6; }
-if test "${ac_cv_lib_acl_acl_get_file+set}" = set; then :
+if ${ac_cv_lib_acl_acl_get_file+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -11733,11 +11760,11 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_acl_acl_get_file" >&5
 $as_echo "$ac_cv_lib_acl_acl_get_file" >&6; }
-if test "x$ac_cv_lib_acl_acl_get_file" = x""yes; then :
+if test "x$ac_cv_lib_acl_acl_get_file" = xyes; then :
   LIBS="$LIBS -lacl"
 		  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgetxattr in -lattr" >&5
 $as_echo_n "checking for fgetxattr in -lattr... " >&6; }
-if test "${ac_cv_lib_attr_fgetxattr+set}" = set; then :
+if ${ac_cv_lib_attr_fgetxattr+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -11771,7 +11798,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_attr_fgetxattr" >&5
 $as_echo "$ac_cv_lib_attr_fgetxattr" >&6; }
-if test "x$ac_cv_lib_attr_fgetxattr" = x""yes; then :
+if test "x$ac_cv_lib_attr_fgetxattr" = xyes; then :
   LIBS="$LIBS -lattr"
 fi
 
@@ -11813,7 +11840,7 @@ rm -f core conftest.err conftest.$ac_objext \
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for acl_get in -lsec" >&5
 $as_echo_n "checking for acl_get in -lsec... " >&6; }
-if test "${ac_cv_lib_sec_acl_get+set}" = set; then :
+if ${ac_cv_lib_sec_acl_get+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -11847,7 +11874,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sec_acl_get" >&5
 $as_echo "$ac_cv_lib_sec_acl_get" >&6; }
-if test "x$ac_cv_lib_sec_acl_get" = x""yes; then :
+if test "x$ac_cv_lib_sec_acl_get" = xyes; then :
   LIBS="$LIBS -lsec"; $as_echo "#define HAVE_SOLARIS_ZFS_ACL 1" >>confdefs.h
 
 else
@@ -11943,7 +11970,7 @@ if test "$enable_gpm" = "yes"; then
 $as_echo "no" >&6; }
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gpm" >&5
 $as_echo_n "checking for gpm... " >&6; }
-if test "${vi_cv_have_gpm+set}" = set; then :
+if ${vi_cv_have_gpm+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   olibs="$LIBS" ; LIBS="-lgpm"
@@ -11996,7 +12023,7 @@ if test "$enable_sysmouse" = "yes"; then
 $as_echo "no" >&6; }
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysmouse" >&5
 $as_echo_n "checking for sysmouse... " >&6; }
-if test "${vi_cv_have_sysmouse+set}" = set; then :
+if ${vi_cv_have_sysmouse+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12202,7 +12229,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 # This bug is HP SR number 8606223364.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of int" >&5
 $as_echo_n "checking size of int... " >&6; }
-if test "${ac_cv_sizeof_int+set}" = set; then :
+if ${ac_cv_sizeof_int+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (int))" "ac_cv_sizeof_int"        "$ac_includes_default"; then :
@@ -12211,9 +12238,8 @@ else
   if test "$ac_cv_type_int" = yes; then
      { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ as_fn_set_status 77
-as_fn_error "cannot compute sizeof (int)
-See \`config.log' for more details." "$LINENO" 5; }; }
+as_fn_error 77 "cannot compute sizeof (int)
+See \`config.log' for more details" "$LINENO" 5; }
    else
      ac_cv_sizeof_int=0
    fi
@@ -12236,7 +12262,7 @@ _ACEOF
 # This bug is HP SR number 8606223364.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long" >&5
 $as_echo_n "checking size of long... " >&6; }
-if test "${ac_cv_sizeof_long+set}" = set; then :
+if ${ac_cv_sizeof_long+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long))" "ac_cv_sizeof_long"        "$ac_includes_default"; then :
@@ -12245,9 +12271,8 @@ else
   if test "$ac_cv_type_long" = yes; then
      { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ as_fn_set_status 77
-as_fn_error "cannot compute sizeof (long)
-See \`config.log' for more details." "$LINENO" 5; }; }
+as_fn_error 77 "cannot compute sizeof (long)
+See \`config.log' for more details" "$LINENO" 5; }
    else
      ac_cv_sizeof_long=0
    fi
@@ -12270,7 +12295,7 @@ _ACEOF
 # This bug is HP SR number 8606223364.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of time_t" >&5
 $as_echo_n "checking size of time_t... " >&6; }
-if test "${ac_cv_sizeof_time_t+set}" = set; then :
+if ${ac_cv_sizeof_time_t+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (time_t))" "ac_cv_sizeof_time_t"        "$ac_includes_default"; then :
@@ -12279,9 +12304,8 @@ else
   if test "$ac_cv_type_time_t" = yes; then
      { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ as_fn_set_status 77
-as_fn_error "cannot compute sizeof (time_t)
-See \`config.log' for more details." "$LINENO" 5; }; }
+as_fn_error 77 "cannot compute sizeof (time_t)
+See \`config.log' for more details" "$LINENO" 5; }
    else
      ac_cv_sizeof_time_t=0
    fi
@@ -12304,7 +12328,7 @@ _ACEOF
 # This bug is HP SR number 8606223364.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of off_t" >&5
 $as_echo_n "checking size of off_t... " >&6; }
-if test "${ac_cv_sizeof_off_t+set}" = set; then :
+if ${ac_cv_sizeof_off_t+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (off_t))" "ac_cv_sizeof_off_t"        "$ac_includes_default"; then :
@@ -12313,9 +12337,8 @@ else
   if test "$ac_cv_type_off_t" = yes; then
      { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ as_fn_set_status 77
-as_fn_error "cannot compute sizeof (off_t)
-See \`config.log' for more details." "$LINENO" 5; }; }
+as_fn_error 77 "cannot compute sizeof (off_t)
+See \`config.log' for more details" "$LINENO" 5; }
    else
      ac_cv_sizeof_off_t=0
    fi
@@ -12368,7 +12391,7 @@ if ac_fn_c_try_run "$LINENO"; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
 $as_echo "ok" >&6; }
 else
-  as_fn_error "WRONG!  uint32_t not defined correctly." "$LINENO" 5
+  as_fn_error $? "WRONG!  uint32_t not defined correctly." "$LINENO" 5
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
   conftest.$ac_objext conftest.beam conftest.$ac_ext
@@ -12400,13 +12423,13 @@ main() {
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether memmove handles overlaps" >&5
 $as_echo_n "checking whether memmove handles overlaps... " >&6; }
-if test "${vim_cv_memmove_handles_overlap+set}" = set; then :
+if ${vim_cv_memmove_handles_overlap+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
     if test "$cross_compiling" = yes; then :
 
-	as_fn_error "cross-compiling: please set 'vim_cv_memmove_handles_overlap'" "$LINENO" 5
+	as_fn_error $? "cross-compiling: please set 'vim_cv_memmove_handles_overlap'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12437,13 +12460,13 @@ if test "x$vim_cv_memmove_handles_overlap" = "xyes" ; then
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether bcopy handles overlaps" >&5
 $as_echo_n "checking whether bcopy handles overlaps... " >&6; }
-if test "${vim_cv_bcopy_handles_overlap+set}" = set; then :
+if ${vim_cv_bcopy_handles_overlap+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
       if test "$cross_compiling" = yes; then :
 
-	as_fn_error "cross-compiling: please set 'vim_cv_bcopy_handles_overlap'" "$LINENO" 5
+	as_fn_error $? "cross-compiling: please set 'vim_cv_bcopy_handles_overlap'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12474,13 +12497,13 @@ $as_echo "$vim_cv_bcopy_handles_overlap" >&6; }
   else
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether memcpy handles overlaps" >&5
 $as_echo_n "checking whether memcpy handles overlaps... " >&6; }
-if test "${vim_cv_memcpy_handles_overlap+set}" = set; then :
+if ${vim_cv_memcpy_handles_overlap+:} false; then :
   $as_echo_n "(cached) " >&6
 else
 
 	if test "$cross_compiling" = yes; then :
 
-	    as_fn_error "cross-compiling: please set 'vim_cv_memcpy_handles_overlap'" "$LINENO" 5
+	    as_fn_error $? "cross-compiling: please set 'vim_cv_memcpy_handles_overlap'" "$LINENO" 5
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12575,7 +12598,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _xpg4_setrunelocale in -lxpg4" >&5
 $as_echo_n "checking for _xpg4_setrunelocale in -lxpg4... " >&6; }
-if test "${ac_cv_lib_xpg4__xpg4_setrunelocale+set}" = set; then :
+if ${ac_cv_lib_xpg4__xpg4_setrunelocale+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -12609,7 +12632,7 @@ LIBS=$ac_check_lib_save_LIBS
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_xpg4__xpg4_setrunelocale" >&5
 $as_echo "$ac_cv_lib_xpg4__xpg4_setrunelocale" >&6; }
-if test "x$ac_cv_lib_xpg4__xpg4_setrunelocale" = x""yes; then :
+if test "x$ac_cv_lib_xpg4__xpg4_setrunelocale" = xyes; then :
   LIBS="$LIBS -lxpg4"
 fi
 
@@ -12671,7 +12694,7 @@ $as_echo "no" >&6; }
 set dummy msgfmt; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_MSGFMT+set}" = set; then :
+if ${ac_cv_prog_MSGFMT+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$MSGFMT"; then
@@ -12683,7 +12706,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_MSGFMT="msgfmt"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -12764,7 +12787,7 @@ $as_echo "msgfmt not found - disabled" >&6; };
             for ac_func in bind_textdomain_codeset
 do :
   ac_fn_c_check_func "$LINENO" "bind_textdomain_codeset" "ac_cv_func_bind_textdomain_codeset"
-if test "x$ac_cv_func_bind_textdomain_codeset" = x""yes; then :
+if test "x$ac_cv_func_bind_textdomain_codeset" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_BIND_TEXTDOMAIN_CODESET 1
 _ACEOF
@@ -12807,11 +12830,11 @@ $as_echo "yes" >&6; }
 fi
 
 ac_fn_c_check_header_mongrel "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default"
-if test "x$ac_cv_header_dlfcn_h" = x""yes; then :
+if test "x$ac_cv_header_dlfcn_h" = xyes; then :
   DLL=dlfcn.h
 else
   ac_fn_c_check_header_mongrel "$LINENO" "dl.h" "ac_cv_header_dl_h" "$ac_includes_default"
-if test "x$ac_cv_header_dl_h" = x""yes; then :
+if test "x$ac_cv_header_dl_h" = xyes; then :
   DLL=dl.h
 fi
 
@@ -13008,7 +13031,7 @@ fi
 for ac_header in setjmp.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "setjmp.h" "ac_cv_header_setjmp_h" "$ac_includes_default"
-if test "x$ac_cv_header_setjmp_h" = x""yes; then :
+if test "x$ac_cv_header_setjmp_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_SETJMP_H 1
 _ACEOF
@@ -13159,10 +13182,21 @@ $as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
      :end' >>confcache
 if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
   if test -w "$cache_file"; then
-    test "x$cache_file" != "x/dev/null" &&
+    if test "x$cache_file" != "x/dev/null"; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
 $as_echo "$as_me: updating cache $cache_file" >&6;}
-    cat confcache >$cache_file
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
   else
     { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
 $as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
@@ -13178,6 +13212,7 @@ DEFS=-DHAVE_CONFIG_H
 
 ac_libobjs=
 ac_ltlibobjs=
+U=
 for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
   # 1. Remove the extension, and $U if already installed.
   ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
@@ -13194,7 +13229,7 @@ LTLIBOBJS=$ac_ltlibobjs
 
 
 
-: ${CONFIG_STATUS=./config.status}
+: "${CONFIG_STATUS=./config.status}"
 ac_write_fail=0
 ac_clean_files_save=$ac_clean_files
 ac_clean_files="$ac_clean_files $CONFIG_STATUS"
@@ -13295,6 +13330,7 @@ fi
 IFS=" ""	$as_nl"
 
 # Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
 case $0 in #((
   *[\\/]* ) as_myself=$0 ;;
   *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -13340,19 +13376,19 @@ export LANGUAGE
 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
 
-# as_fn_error ERROR [LINENO LOG_FD]
-# ---------------------------------
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
 # Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
 # provided, also output the error to LOG_FD, referencing LINENO. Then exit the
-# script with status $?, using 1 if that was 0.
+# script with STATUS, using 1 if that was 0.
 as_fn_error ()
 {
-  as_status=$?; test $as_status -eq 0 && as_status=1
-  if test "$3"; then
-    as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-    $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
   fi
-  $as_echo "$as_me: error: $1" >&2
+  $as_echo "$as_me: error: $2" >&2
   as_fn_exit $as_status
 } # as_fn_error
 
@@ -13490,16 +13526,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -p'.
+    # In both cases, we have to default to `cp -pR'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -p'
+      as_ln_s='cp -pR'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -p'
+    as_ln_s='cp -pR'
   fi
 else
-  as_ln_s='cp -p'
+  as_ln_s='cp -pR'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -13548,7 +13584,7 @@ $as_echo X"$as_dir" |
       test -d "$as_dir" && break
     done
     test -z "$as_dirs" || eval "mkdir $as_dirs"
-  } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
 
 
 } # as_fn_mkdir_p
@@ -13559,28 +13595,16 @@ else
   as_mkdir_p=false
 fi
 
-if test -x / >/dev/null 2>&1; then
-  as_test_x='test -x'
-else
-  if ls -dL / >/dev/null 2>&1; then
-    as_ls_L_option=L
-  else
-    as_ls_L_option=
-  fi
-  as_test_x='
-    eval sh -c '\''
-      if test -d "$1"; then
-	test -d "$1/.";
-      else
-	case $1 in #(
-	-*)set "./$1";;
-	esac;
-	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
-	???[sx]*):;;*)false;;esac;fi
-    '\'' sh
-  '
-fi
-as_executable_p=$as_test_x
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -13602,7 +13626,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # values after options handling.
 ac_log="
 This file was extended by $as_me, which was
-generated by GNU Autoconf 2.65.  Invocation command line was
+generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -13664,10 +13688,10 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
 config.status
-configured by $0, generated by GNU Autoconf 2.65,
+configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
-Copyright (C) 2009 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."
 
@@ -13683,11 +13707,16 @@ ac_need_defaults=:
 while test $# != 0
 do
   case $1 in
-  --*=*)
+  --*=?*)
     ac_option=`expr "X$1" : 'X\([^=]*\)='`
     ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
     ac_shift=:
     ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
   *)
     ac_option=$1
     ac_optarg=$2
@@ -13709,6 +13738,7 @@ do
     $ac_shift
     case $ac_optarg in
     *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
     esac
     as_fn_append CONFIG_FILES " '$ac_optarg'"
     ac_need_defaults=false;;
@@ -13721,7 +13751,7 @@ do
     ac_need_defaults=false;;
   --he | --h)
     # Conflict between --help and --header
-    as_fn_error "ambiguous option: \`$1'
+    as_fn_error $? "ambiguous option: \`$1'
 Try \`$0 --help' for more information.";;
   --help | --hel | -h )
     $as_echo "$ac_cs_usage"; exit ;;
@@ -13730,7 +13760,7 @@ Try \`$0 --help' for more information.";;
     ac_cs_silent=: ;;
 
   # This is an error.
-  -*) as_fn_error "unrecognized option: \`$1'
+  -*) as_fn_error $? "unrecognized option: \`$1'
 Try \`$0 --help' for more information." ;;
 
   *) as_fn_append ac_config_targets " $1"
@@ -13750,7 +13780,7 @@ fi
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 if \$ac_cs_recheck; then
-  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
   shift
   \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
   CONFIG_SHELL='$SHELL'
@@ -13782,7 +13812,7 @@ do
     "auto/config.h") CONFIG_HEADERS="$CONFIG_HEADERS auto/config.h:config.h.in" ;;
     "auto/config.mk") CONFIG_FILES="$CONFIG_FILES auto/config.mk:config.mk.in" ;;
 
-  *) as_fn_error "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
 done
 
@@ -13804,9 +13834,10 @@ fi
 # after its creation but before its name has been assigned to `$tmp'.
 $debug ||
 {
-  tmp=
+  tmp= ac_tmp=
   trap 'exit_status=$?
-  { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
 ' 0
   trap 'as_fn_exit 1' 1 2 13 15
 }
@@ -13814,12 +13845,13 @@ $debug ||
 
 {
   tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
-  test -n "$tmp" && test -d "$tmp"
+  test -d "$tmp"
 }  ||
 {
   tmp=./conf$$-$RANDOM
   (umask 077 && mkdir "$tmp")
-} || as_fn_error "cannot create a temporary directory in ." "$LINENO" 5
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
 
 # Set up the scripts for CONFIG_FILES section.
 # No need to generate them if there are no CONFIG_FILES.
@@ -13836,12 +13868,12 @@ if test "x$ac_cr" = x; then
 fi
 ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
 if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
-  ac_cs_awk_cr='\r'
+  ac_cs_awk_cr='\\r'
 else
   ac_cs_awk_cr=$ac_cr
 fi
 
-echo 'BEGIN {' >"$tmp/subs1.awk" &&
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
 _ACEOF
 
 
@@ -13850,18 +13882,18 @@ _ACEOF
   echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
   echo "_ACEOF"
 } >conf$$subs.sh ||
-  as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
-ac_delim_num=`echo "$ac_subst_vars" | grep -c '$'`
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   . ./conf$$subs.sh ||
-    as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
 
   ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
   if test $ac_delim_n = $ac_delim_num; then
     break
   elif $ac_last_try; then
-    as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
   else
     ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
   fi
@@ -13869,7 +13901,7 @@ done
 rm -f conf$$subs.sh
 
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
-cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
 _ACEOF
 sed -n '
 h
@@ -13917,7 +13949,7 @@ t delim
 rm -f conf$$subs.awk
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 _ACAWK
-cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
   for (key in S) S_is_set[key] = 1
   FS = ""
 
@@ -13949,21 +13981,29 @@ if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
   sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
 else
   cat
-fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
-  || as_fn_error "could not setup config files machinery" "$LINENO" 5
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
 _ACEOF
 
-# VPATH may cause trouble with some makes, so we remove $(srcdir),
-# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
 # trailing colons and then remove the whole line if VPATH becomes empty
 # (actually we leave an empty line to preserve line numbers).
 if test "x$srcdir" = x.; then
-  ac_vpsub='/^[	 ]*VPATH[	 ]*=/{
-s/:*\$(srcdir):*/:/
-s/:*\${srcdir}:*/:/
-s/:*@srcdir@:*/:/
-s/^\([^=]*=[	 ]*\):*/\1/
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
 s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
 s/^[^=]*=[	 ]*$//
 }'
 fi
@@ -13975,7 +14015,7 @@ fi # test -n "$CONFIG_FILES"
 # No need to generate them if there are no CONFIG_HEADERS.
 # This happens for instance with `./config.status Makefile'.
 if test -n "$CONFIG_HEADERS"; then
-cat >"$tmp/defines.awk" <<\_ACAWK ||
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
 BEGIN {
 _ACEOF
 
@@ -13987,11 +14027,11 @@ _ACEOF
 # handling of long lines.
 ac_delim='%!_!# '
 for ac_last_try in false false :; do
-  ac_t=`sed -n "/$ac_delim/p" confdefs.h`
-  if test -z "$ac_t"; then
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
     break
   elif $ac_last_try; then
-    as_fn_error "could not make $CONFIG_HEADERS" "$LINENO" 5
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
   else
     ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
   fi
@@ -14076,7 +14116,7 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 _ACAWK
 _ACEOF
 cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
-  as_fn_error "could not setup config headers machinery" "$LINENO" 5
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
 fi # test -n "$CONFIG_HEADERS"
 
 
@@ -14089,7 +14129,7 @@ do
   esac
   case $ac_mode$ac_tag in
   :[FHL]*:*);;
-  :L* | :C*:*) as_fn_error "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
   :[FH]-) ac_tag=-:-;;
   :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
   esac
@@ -14108,7 +14148,7 @@ do
     for ac_f
     do
       case $ac_f in
-      -) ac_f="$tmp/stdin";;
+      -) ac_f="$ac_tmp/stdin";;
       *) # Look for the file first in the build tree, then in the source tree
 	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
 	 # because $ac_f cannot contain `:'.
@@ -14117,7 +14157,7 @@ do
 	   [\\/$]*) false;;
 	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
 	   esac ||
-	   as_fn_error "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
       esac
       case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
       as_fn_append ac_file_inputs " '$ac_f'"
@@ -14143,8 +14183,8 @@ $as_echo "$as_me: creating $ac_file" >&6;}
     esac
 
     case $ac_tag in
-    *:-:* | *:-) cat >"$tmp/stdin" \
-      || as_fn_error "could not create $ac_file" "$LINENO" 5 ;;
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
     esac
     ;;
   esac
@@ -14269,23 +14309,24 @@ s&@abs_builddir@&$ac_abs_builddir&;t t
 s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
 $ac_datarootdir_hack
 "
-eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
-  || as_fn_error "could not create $ac_file" "$LINENO" 5
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
 
 test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
-  { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
-  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
-which seems to be undefined.  Please make sure it is defined." >&5
+which seems to be undefined.  Please make sure it is defined" >&5
 $as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
-which seems to be undefined.  Please make sure it is defined." >&2;}
+which seems to be undefined.  Please make sure it is defined" >&2;}
 
-  rm -f "$tmp/stdin"
+  rm -f "$ac_tmp/stdin"
   case $ac_file in
-  -) cat "$tmp/out" && rm -f "$tmp/out";;
-  *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
   esac \
-  || as_fn_error "could not create $ac_file" "$LINENO" 5
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
  ;;
   :H)
   #
@@ -14294,21 +14335,21 @@ which seems to be undefined.  Please make sure it is defined." >&2;}
   if test x"$ac_file" != x-; then
     {
       $as_echo "/* $configure_input  */" \
-      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
-    } >"$tmp/config.h" \
-      || as_fn_error "could not create $ac_file" "$LINENO" 5
-    if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
 $as_echo "$as_me: $ac_file is unchanged" >&6;}
     else
       rm -f "$ac_file"
-      mv "$tmp/config.h" "$ac_file" \
-	|| as_fn_error "could not create $ac_file" "$LINENO" 5
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
     fi
   else
     $as_echo "/* $configure_input  */" \
-      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
-      || as_fn_error "could not create -" "$LINENO" 5
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
   fi
  ;;
 
@@ -14323,7 +14364,7 @@ _ACEOF
 ac_clean_files=$ac_clean_files_save
 
 test $ac_write_fail = 0 ||
-  as_fn_error "write failure creating $CONFIG_STATUS" "$LINENO" 5
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
 
 
 # configure is writing to config.log, and then calls config.status.
@@ -14344,7 +14385,7 @@ if test "$no_create" != yes; then
   exec 5>>auto/config.log
   # Use ||, not &&, to avoid exiting from the if with $? = 1, which
   # would make configure fail if this is the last instruction.
-  $ac_cs_success || as_fn_exit $?
+  $ac_cs_success || as_fn_exit 1
 fi
 if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
diff --git a/src/configure.in b/src/configure.in
index ac6eb4509..28fd8c152 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -1397,7 +1397,7 @@ if test "$python_ok" = yes && test "$python3_ok" = yes; then
   ldflags_save=$LDFLAGS
   dnl -ldl must go first to make this work on Archlinux (Roland Puntaier)
   LDFLAGS="-ldl $LDFLAGS"
-  AC_RUN_IFELSE([
+  AC_RUN_IFELSE([AC_LANG_SOURCE([
     #include <dlfcn.h>
     /* If this program fails, then RTLD_GLOBAL is needed.
      * RTLD_GLOBAL will be used and then it is not possible to
@@ -1430,7 +1430,7 @@ if test "$python_ok" = yes && test "$python3_ok" = yes; then
       if (no_rtl_global_needed_for("${python_INSTSONAME}", "${vi_cv_path_python_pfx}"))
             not_needed = 1;
       return !not_needed;
-    }],
+    }])],
     [AC_MSG_RESULT(yes);AC_DEFINE(PY_NO_RTLD_GLOBAL)], [AC_MSG_RESULT(no)])
 
   CFLAGS=$cflags_save
@@ -1442,7 +1442,7 @@ if test "$python_ok" = yes && test "$python3_ok" = yes; then
   ldflags_save=$LDFLAGS
   dnl -ldl must go first to make this work on Archlinux (Roland Puntaier)
   LDFLAGS="-ldl $LDFLAGS"
-  AC_RUN_IFELSE([
+  AC_RUN_IFELSE([AC_LANG_SOURCE([
     #include <dlfcn.h>
     #include <wchar.h>
     /* If this program fails, then RTLD_GLOBAL is needed.
@@ -1476,7 +1476,7 @@ if test "$python_ok" = yes && test "$python3_ok" = yes; then
       if (no_rtl_global_needed_for("${python3_INSTSONAME}", L"${vi_cv_path_python3_pfx}"))
             not_needed = 1;
       return !not_needed;
-    }],
+    }])],
     [AC_MSG_RESULT(yes);AC_DEFINE(PY3_NO_RTLD_GLOBAL)], [AC_MSG_RESULT(no)])
 
   CFLAGS=$cflags_save
@@ -2737,7 +2737,7 @@ dnl Checks for libraries and include files.
 
 AC_CACHE_CHECK([whether toupper is broken], [vim_cv_toupper_broken],
   [
-    AC_RUN_IFELSE([[
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include "confdefs.h"
 #include <ctype.h>
 #if STDC_HEADERS
@@ -2745,7 +2745,7 @@ AC_CACHE_CHECK([whether toupper is broken], [vim_cv_toupper_broken],
 # include <stddef.h>
 #endif
 main() { exit(toupper('A') == 'A' && tolower('z') == 'z'); }
-  ]],[
+  ]])],[
     vim_cv_toupper_broken=yes
   ],[
     vim_cv_toupper_broken=no
@@ -2993,7 +2993,7 @@ fi
 
 AC_CACHE_CHECK([whether we talk terminfo], [vim_cv_terminfo],
   [
-    AC_RUN_IFELSE([[
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include "confdefs.h"
 #ifdef HAVE_TERMCAP_H
 # include <termcap.h>
@@ -3007,7 +3007,7 @@ AC_CACHE_CHECK([whether we talk terminfo], [vim_cv_terminfo],
 #endif
 main()
 {char *s; s=(char *)tgoto("%p1%d", 0, 1); exit(!strcmp(s==0 ? "" : s, "1")); }
-    ]],[
+    ]])],[
       vim_cv_terminfo=no
     ],[
       vim_cv_terminfo=yes
@@ -3023,7 +3023,7 @@ fi
 if test "x$olibs" != "x$LIBS"; then
   AC_CACHE_CHECK([what tgetent() returns for an unknown terminal], [vim_cv_tgent],
     [
-      AC_RUN_IFELSE([[
+      AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include "confdefs.h"
 #ifdef HAVE_TERMCAP_H
 # include <termcap.h>
@@ -3034,7 +3034,7 @@ if test "x$olibs" != "x$LIBS"; then
 #endif
 main()
 {char s[10000]; int res = tgetent(s, "thisterminaldoesnotexist"); exit(res != 0); }
-      ]],[
+      ]])],[
 	vim_cv_tgent=zero
       ],[
 	vim_cv_tgent=non-zero
@@ -3158,7 +3158,7 @@ dnl support provided by Luke Mewburn <lm@rmit.edu.au>, 931222
 rm -f conftest_grp
 AC_CACHE_CHECK([default tty permissions/group], [vim_cv_tty_group],
   [
-    AC_RUN_IFELSE([[
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3194,7 +3194,7 @@ main()
   fclose(fp);
   exit(0);
 }
-    ]],[
+    ]])],[
       if test -f conftest_grp; then
 	vim_cv_tty_group=`cat conftest_grp`
 	if test "x$vim_cv_tty_mode" = "x" ; then
@@ -3252,7 +3252,7 @@ dnl tricky stuff: try to find out if getcwd() is implemented with
 dnl system("sh -c pwd")
 AC_CACHE_CHECK([getcwd implementation is broken], [vim_cv_getcwd_broken],
   [
-    AC_RUN_IFELSE([[
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include "confdefs.h"
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -3265,7 +3265,7 @@ main()
   environ = dagger;
   return getcwd(buffer, 500) ? 0 : 1;
 }
-    ]],[
+    ]])],[
       vim_cv_getcwd_broken=no
     ],[
       vim_cv_getcwd_broken=yes
@@ -3308,7 +3308,7 @@ AC_TRY_COMPILE(
 
 AC_CACHE_CHECK([whether stat() ignores a trailing slash], [vim_cv_stat_ignores_slash],
   [
-    AC_RUN_IFELSE([[
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include "confdefs.h"
 #if STDC_HEADERS
 # include <stdlib.h>
@@ -3317,7 +3317,7 @@ AC_CACHE_CHECK([whether stat() ignores a trailing slash], [vim_cv_stat_ignores_s
 #include <sys/types.h>
 #include <sys/stat.h>
 main() {struct stat st;  exit(stat("configure/", &st) != 0); }
-    ]],[
+    ]])],[
       vim_cv_stat_ignores_slash=yes
     ],[
       vim_cv_stat_ignores_slash=no
@@ -3631,7 +3631,7 @@ main() {
 
 AC_CACHE_CHECK([whether memmove handles overlaps],[vim_cv_memmove_handles_overlap],
   [
-    AC_RUN_IFELSE([[#define mch_memmove(s,d,l) memmove(d,s,l) $bcopy_test_prog]],
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[#define mch_memmove(s,d,l) memmove(d,s,l) $bcopy_test_prog]])],
       [
 	vim_cv_memmove_handles_overlap=yes
       ],[
@@ -3646,7 +3646,7 @@ if test "x$vim_cv_memmove_handles_overlap" = "xyes" ; then
 else
   AC_CACHE_CHECK([whether bcopy handles overlaps],[vim_cv_bcopy_handles_overlap],
     [
-      AC_RUN_IFELSE([[#define mch_bcopy(s,d,l) bcopy(d,s,l) $bcopy_test_prog]],
+      AC_RUN_IFELSE([AC_LANG_SOURCE([[#define mch_bcopy(s,d,l) bcopy(d,s,l) $bcopy_test_prog]])],
       [
 	vim_cv_bcopy_handles_overlap=yes
       ],[
@@ -3661,7 +3661,7 @@ else
   else
     AC_CACHE_CHECK([whether memcpy handles overlaps],[vim_cv_memcpy_handles_overlap],
       [
-	AC_RUN_IFELSE([[#define mch_memcpy(s,d,l) memcpy(d,s,l) $bcopy_test_prog]],
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[#define mch_memcpy(s,d,l) memcpy(d,s,l) $bcopy_test_prog]])],
 	  [
 	    vim_cv_memcpy_handles_overlap=yes
 	  ],[
diff --git a/src/version.c b/src/version.c
index 3d352543f..c901b091b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    223,
+/**/
     222,
 /**/
     221,