--- libelwix/configure	2026/02/16 10:05:28	1.83
+++ libelwix/configure	2026/07/27 21:12:47	1.89.2.1
@@ -1,11 +1,11 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for libelwix 6.15.
+# Generated by GNU Autoconf 2.73 for libelwix 7.1.
 #
 # Report bugs to <misho@elwix.org>.
 #
 #
-# Copyright (C) 1992-1996, 1998-2017, 2020-2023 Free Software Foundation,
+# Copyright (C) 1992-1996, 1998-2017, 2020-2026 Free Software Foundation,
 # Inc.
 #
 #
@@ -22,7 +22,7 @@ then :
   emulate sh
   NULLCMD=:
   # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
+  # contradicts POSIX and common usage.  Disable this.
   alias -g '${1+"$@"}'='"$@"'
   setopt NO_GLOB_SUBST
 else case e in #(
@@ -109,7 +109,7 @@ if test "x$as_myself" = x; then
   as_myself=$0
 fi
 if test ! -f "$as_myself"; then
-  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  printf '%s\n' "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
   exit 1
 fi
 
@@ -131,10 +131,13 @@ case $- in # ((((
   *x* ) as_opts=-x ;;
   * ) as_opts= ;;
 esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+case $# in # ((
+  0) exec $CONFIG_SHELL $as_opts "$as_myself" ;;
+  *) exec $CONFIG_SHELL $as_opts "$as_myself" "$@" ;;
+esac
 # Admittedly, this is quite paranoid, since all the known shells bail
 # out after a failed 'exec'.
-printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
+printf '%s\n' "$0: could not re-execute with $CONFIG_SHELL" >&2
 exit 255
   fi
   # We don't want this to propagate to other subprocesses.
@@ -145,7 +148,7 @@ then :
   emulate sh
   NULLCMD=:
   # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
-  # is contrary to our usage.  Disable this feature.
+  # contradicts POSIX and common usage.  Disable this.
   alias -g '\${1+\"\$@\"}'='\"\$@\"'
   setopt NO_GLOB_SUBST
 else case e in #(
@@ -254,22 +257,25 @@ case $- in # ((((
   *x* ) as_opts=-x ;;
   * ) as_opts= ;;
 esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+case $# in # ((
+  0) exec $CONFIG_SHELL $as_opts "$as_myself" ;;
+  *) exec $CONFIG_SHELL $as_opts "$as_myself" "$@" ;;
+esac
 # Admittedly, this is quite paranoid, since all the known shells bail
 # out after a failed 'exec'.
-printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
+printf '%s\n' "$0: could not re-execute with $CONFIG_SHELL" >&2
 exit 255
 fi
 
     if test x$as_have_required = xno
 then :
-  printf "%s\n" "$0: This script requires a shell more modern than all"
-  printf "%s\n" "$0: the shells that I found on your system."
+  printf '%s\n' "$0: This script requires a shell more modern than all"
+  printf '%s\n' "$0: the shells that I found on your system."
   if test ${ZSH_VERSION+y} ; then
-    printf "%s\n" "$0: In particular, zsh $ZSH_VERSION has bugs and should"
-    printf "%s\n" "$0: be upgraded to zsh 4.3.4 or later."
+    printf '%s\n' "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    printf '%s\n' "$0: be upgraded to zsh 4.3.4 or later."
   else
-    printf "%s\n" "$0: Please tell bug-autoconf@gnu.org and misho@elwix.org
+    printf '%s\n' "$0: Please tell bug-autoconf@gnu.org and misho@elwix.org
 $0: about your system, including any error possibly output
 $0: before this message. Then install a modern shell, or
 $0: manually run the script under such a shell if you do
@@ -330,7 +336,7 @@ as_fn_mkdir_p ()
     as_dirs=
     while :; do
       case $as_dir in #(
-      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *\'*) as_qdir=`printf '%s\n' "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
       *) as_qdir=$as_dir;;
       esac
       as_dirs="'$as_qdir' $as_dirs"
@@ -339,7 +345,7 @@ $as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| 
 	 X"$as_dir" : 'X\(//\)[^/]' \| \
 	 X"$as_dir" : 'X\(//\)$' \| \
 	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
-printf "%s\n" X"$as_dir" |
+printf '%s\n' X"$as_dir" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -422,9 +428,9 @@ as_fn_error ()
   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
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
   fi
-  printf "%s\n" "$as_me: error: $2" >&2
+  printf '%s\n' "$as_me: error: $2" >&2
   as_fn_exit $as_status
 } # as_fn_error
 
@@ -451,7 +457,7 @@ as_me=`$as_basename -- "$0" ||
 $as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
 	 X"$0" : 'X\(//\)$' \| \
 	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-printf "%s\n" X/"$0" |
+printf '%s\n' X/"$0" |
     sed '/^.*\/\([^/][^/]*\)\/*$/{
 	    s//\1/
 	    q
@@ -497,7 +503,7 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
       s/-\n.*//
     ' >$as_me.lineno &&
   chmod +x "$as_me.lineno" ||
-    { printf "%s\n" "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+    { printf '%s\n' "$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 $CONFIG_SHELL, we're ensured to have
   # already done that, so ensure we don't try to do so again and fall
@@ -511,29 +517,6 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
   exit
 }
 
-
-# Determine whether it's possible to make 'echo' print without a newline.
-# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
-# for compatibility with existing Makefiles.
-ECHO_C= ECHO_N= ECHO_T=
-case `echo -n x` in #(((((
--n*)
-  case `echo 'xy\c'` in
-  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
-  xy)  ECHO_C='\c';;
-  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
-       ECHO_T='	';;
-  esac;;
-*)
-  ECHO_N='-n';;
-esac
-
-# For backward compatibility with old third-party macros, we provide
-# the shell variables $as_echo and $as_echo_n.  New code should use
-# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
-as_echo='printf %s\n'
-as_echo_n='printf %s'
-
 rm -f conf$$ conf$$.exe conf$$.file
 if test -d conf$$.dir; then
   rm -f conf$$.dir/conf$$.file
@@ -592,6 +575,7 @@ ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 
 # Initializations.
 #
 ac_default_prefix=/usr/local
+ac_clean_CONFIG_STATUS=
 ac_clean_files=
 ac_config_libobj_dir=.
 LIBOBJS=
@@ -603,8 +587,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libelwix'
 PACKAGE_TARNAME='libelwix'
-PACKAGE_VERSION='6.15'
-PACKAGE_STRING='libelwix 6.15'
+PACKAGE_VERSION='7.1'
+PACKAGE_STRING='libelwix 7.1'
 PACKAGE_BUGREPORT='misho@elwix.org'
 PACKAGE_URL=''
 
@@ -668,13 +652,13 @@ CPPFLAGS
 LDFLAGS
 CFLAGS
 CC
+ECHO_T
+ECHO_N
+ECHO_C
 target_alias
 host_alias
 build_alias
 LIBS
-ECHO_T
-ECHO_N
-ECHO_C
 DEFS
 mandir
 localedir
@@ -834,7 +818,7 @@ do
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
       as_fn_error $? "invalid feature name: '$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf '%s\n' "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "enable_$ac_useropt"
@@ -860,7 +844,7 @@ do
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
       as_fn_error $? "invalid feature name: '$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf '%s\n' "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "enable_$ac_useropt"
@@ -1073,7 +1057,7 @@ do
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
       as_fn_error $? "invalid package name: '$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf '%s\n' "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "with_$ac_useropt"
@@ -1089,7 +1073,7 @@ do
     expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
       as_fn_error $? "invalid package name: '$ac_useropt'"
     ac_useropt_orig=$ac_useropt
-    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    ac_useropt=`printf '%s\n' "$ac_useropt" | sed 's/[-+.]/_/g'`
     case $ac_user_opts in
       *"
 "with_$ac_useropt"
@@ -1133,9 +1117,9 @@ Try '$0 --help' for more information"
 
   *)
     # FIXME: should be removed in autoconf 3.0.
-    printf "%s\n" "$as_me: WARNING: you should use --build, --host, --target" >&2
+    printf '%s\n' "$as_me: WARNING: you should use --build, --host, --target" >&2
     expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
-      printf "%s\n" "$as_me: WARNING: invalid host type: $ac_option" >&2
+      printf '%s\n' "$as_me: WARNING: invalid host type: $ac_option" >&2
     : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
     ;;
 
@@ -1143,7 +1127,7 @@ Try '$0 --help' for more information"
 done
 
 if test -n "$ac_prev"; then
-  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  ac_option=--`printf '%s\n' $ac_prev | sed 's/_/-/g'`
   as_fn_error $? "missing argument to $ac_option"
 fi
 
@@ -1151,7 +1135,7 @@ if test -n "$ac_unrecognized_opts"; then
   case $enable_option_checking in
     no) ;;
     fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
-    *)     printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+    *)     printf '%s\n' "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
   esac
 fi
 
@@ -1215,7 +1199,7 @@ $as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' 
 	 X"$as_myself" : 'X\(//\)[^/]' \| \
 	 X"$as_myself" : 'X\(//\)$' \| \
 	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
-printf "%s\n" X"$as_myself" |
+printf '%s\n' X"$as_myself" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -1272,7 +1256,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures libelwix 6.15 to adapt to many kinds of systems.
+'configure' configures libelwix 7.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1339,7 +1323,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libelwix 6.15:";;
+     short | recursive ) echo "Configuration of libelwix 7.1:";;
    esac
   cat <<\_ACEOF
 
@@ -1385,9 +1369,9 @@ if test "$ac_init_help" = "recursive"; then
 case "$ac_dir" in
 .) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
 *)
-  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
+  ac_dir_suffix=/`printf '%s\n' "$ac_dir" | sed 's|^\.[\\/]||'`
   # A ".." for each directory in $ac_dir_suffix.
-  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  ac_top_builddir_sub=`printf '%s\n' "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
   case $ac_top_builddir_sub in
   "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
   *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
@@ -1424,7 +1408,7 @@ ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
       echo &&
       $SHELL "$ac_srcdir/configure" --help=recursive
     else
-      printf "%s\n" "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+      printf '%s\n' "$as_me: WARNING: no configuration information is in $ac_dir" >&2
     fi || ac_status=$?
     cd "$ac_pwd" || { ac_status=$?; break; }
   done
@@ -1433,10 +1417,10 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libelwix configure 6.15
-generated by GNU Autoconf 2.72
+libelwix configure 7.1
+generated by GNU Autoconf 2.73
 
-Copyright (C) 2023 Free Software Foundation, Inc.
+Copyright (C) 2026 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -1460,7 +1444,7 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_compile") 2>conftest.err
   ac_status=$?
   if test -s conftest.err; then
@@ -1468,7 +1452,7 @@ printf "%s\n" "$ac_try_echo"; } >&5
     cat conftest.er1 >&5
     mv -f conftest.er1 conftest.err
   fi
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; } && {
 	 test -z "$ac_c_werror_flag" ||
 	 test ! -s conftest.err
@@ -1476,7 +1460,7 @@ printf "%s\n" "$ac_try_echo"; } >&5
 then :
   ac_retval=0
 else case e in #(
-  e) printf "%s\n" "$as_me: failed program was:" >&5
+  e) printf '%s\n' "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
 	ac_retval=1 ;;
@@ -1500,7 +1484,7 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_link") 2>conftest.err
   ac_status=$?
   if test -s conftest.err; then
@@ -1508,7 +1492,7 @@ printf "%s\n" "$ac_try_echo"; } >&5
     cat conftest.er1 >&5
     mv -f conftest.er1 conftest.err
   fi
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; } && {
 	 test -z "$ac_c_werror_flag" ||
 	 test ! -s conftest.err
@@ -1519,7 +1503,7 @@ printf "%s\n" "$ac_try_echo"; } >&5
 then :
   ac_retval=0
 else case e in #(
-  e) printf "%s\n" "$as_me: failed program was:" >&5
+  e) printf '%s\n' "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
 	ac_retval=1 ;;
@@ -1542,7 +1526,7 @@ fi
 ac_fn_c_check_header_compile ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 printf %s "checking for $2... " >&6; }
 if eval test \${$3+y}
 then :
@@ -1564,8 +1548,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.b
 esac
 fi
 eval ac_res=\$$3
-	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-printf "%s\n" "$ac_res" >&6; }
+	       { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf '%s\n' "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_header_compile
@@ -1577,7 +1561,7 @@ printf "%s\n" "$ac_res" >&6; }
 ac_fn_c_check_type ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 printf %s "checking for $2... " >&6; }
 if eval test \${$3+y}
 then :
@@ -1623,8 +1607,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.b
 esac
 fi
 eval ac_res=\$$3
-	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-printf "%s\n" "$ac_res" >&6; }
+	       { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf '%s\n' "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_type
@@ -1642,26 +1626,26 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_link") 2>&5
   ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
   { { case "(($ac_try" in
   *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_try") 2>&5
   ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; }
 then :
   ac_retval=0
 else case e in #(
-  e) printf "%s\n" "$as_me: program exited with status $ac_status" >&5
-       printf "%s\n" "$as_me: failed program was:" >&5
+  e) printf '%s\n' "$as_me: program exited with status $ac_status" >&5
+       printf '%s\n' "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
        ac_retval=$ac_status ;;
@@ -1679,7 +1663,7 @@ fi
 ac_fn_c_check_func ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 printf %s "checking for $2... " >&6; }
 if eval test \${$3+y}
 then :
@@ -1731,8 +1715,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.b
 esac
 fi
 eval ac_res=\$$3
-	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-printf "%s\n" "$ac_res" >&6; }
+	       { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf '%s\n' "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_func
@@ -1741,7 +1725,7 @@ for ac_arg
 do
   case $ac_arg in
   *\'*)
-    ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    ac_arg=`printf '%s\n' "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
   esac
   as_fn_append ac_configure_args_raw " '$ac_arg'"
 done
@@ -1753,15 +1737,15 @@ case $ac_configure_args_raw in
     ac_unsafe_z='|&;<>()$`\\"*?[ ''	' # This string ends in space, tab.
     ac_unsafe_a="$ac_unsafe_z#~"
     ac_safe_unquote="s/ '\\([^$ac_unsafe_a][^$ac_unsafe_z]*\\)'/ \\1/g"
-    ac_configure_args_raw=`      printf "%s\n" "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;;
+    ac_configure_args_raw=`      printf '%s\n' "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;;
 esac
 
 cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libelwix $as_me 6.15, which was
-generated by GNU Autoconf 2.72.  Invocation command line was
+It was created by libelwix $as_me 7.1, which was
+generated by GNU Autoconf 2.73.  Invocation command line was
 
   $ $0$ac_configure_args_raw
 
@@ -1801,7 +1785,7 @@ do
     */) ;;
     *) as_dir=$as_dir/ ;;
   esac
-    printf "%s\n" "PATH: $as_dir"
+    printf '%s\n' "PATH: $as_dir"
   done
 IFS=$as_save_IFS
 
@@ -1836,7 +1820,7 @@ do
     | -silent | --silent | --silen | --sile | --sil)
       continue ;;
     *\'*)
-      ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      ac_arg=`printf '%s\n' "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
     esac
     case $ac_pass in
     1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
@@ -1865,31 +1849,22 @@ done
 { ac_configure_args0=; unset ac_configure_args0;}
 { ac_configure_args1=; unset ac_configure_args1;}
 
-# When interrupted or exit'd, cleanup temporary files, and complete
-# config.log.  We remove comments because anyway the quotes in there
-# would cause problems or look ugly.
-# WARNING: Use '\'' to represent an apostrophe within the trap.
-# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
-trap 'exit_status=$?
-  # Sanitize IFS.
-  IFS=" ""	$as_nl"
-  # Save into config.log some information that might help in debugging.
-  {
-    echo
-
-    printf "%s\n" "## ---------------- ##
-## Cache variables. ##
-## ---------------- ##"
-    echo
-    # The following way of writing the cache mishandles newlines in values,
+# Dump the cache to stdout.  It can be in a pipe (this is a requirement).
+ac_cache_dump ()
+{
+  # The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
 (
-  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
     eval ac_val=\$$ac_var
     case $ac_val in #(
     *${as_nl}*)
       case $ac_var in #(
-      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
-printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      *_cv_*) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+printf '%s\n' "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
       esac
       case $ac_var in #(
       _ | IFS | as_nl) ;; #(
@@ -1898,67 +1873,95 @@ printf "%s\n" "$as_me: WARNING: cache variable $ac_var
       esac ;;
     esac
   done
+
   (set) 2>&1 |
-    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
     *${as_nl}ac_space=\ *)
+      # 'set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
       sed -n \
-	"s/'\''/'\''\\\\'\'''\''/g;
-	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
       ;; #(
     *)
+      # 'set' quotes correctly as required by POSIX, so do not add quotes.
       sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
       ;;
     esac |
     sort
 )
-    echo
+}
 
-    printf "%s\n" "## ----------------- ##
+# Print debugging info to stdout.
+ac_dump_debugging_info ()
+{
+  echo
+
+  printf '%s\n' "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+  echo
+  ac_cache_dump
+  echo
+
+  printf '%s\n' "## ----------------- ##
 ## Output variables. ##
 ## ----------------- ##"
+  echo
+  for ac_var in $ac_subst_vars
+  do
+    eval ac_val=\$$ac_var
+    case $ac_val in
+    *\'*) ac_val=`printf '%s\n' "$ac_val" | sed "s/'/'\\\\\\\\''/g"`;;
+    esac
+    printf '%s\n' "$ac_var='$ac_val'"
+  done | sort
+  echo
+
+  if test -n "$ac_subst_files"; then
+    printf '%s\n' "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
     echo
-    for ac_var in $ac_subst_vars
+    for ac_var in $ac_subst_files
     do
       eval ac_val=\$$ac_var
       case $ac_val in
-      *\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      *\'*) ac_val=`printf '%s\n' "$ac_val" | sed "s/'/'\\\\\\\\''/g"`;;
       esac
-      printf "%s\n" "$ac_var='\''$ac_val'\''"
+      printf '%s\n' "$ac_var='$ac_val'"
     done | sort
     echo
+  fi
 
-    if test -n "$ac_subst_files"; then
-      printf "%s\n" "## ------------------- ##
-## File substitutions. ##
-## ------------------- ##"
-      echo
-      for ac_var in $ac_subst_files
-      do
-	eval ac_val=\$$ac_var
-	case $ac_val in
-	*\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
-	esac
-	printf "%s\n" "$ac_var='\''$ac_val'\''"
-      done | sort
-      echo
-    fi
-
-    if test -s confdefs.h; then
-      printf "%s\n" "## ----------- ##
+  if test -s confdefs.h; then
+    printf '%s\n' "## ----------- ##
 ## confdefs.h. ##
 ## ----------- ##"
-      echo
-      cat confdefs.h
-      echo
-    fi
-    test "$ac_signal" != 0 &&
-      printf "%s\n" "$as_me: caught signal $ac_signal"
-    printf "%s\n" "$as_me: exit $exit_status"
-  } >&5
-  rm -f core *.core core.conftest.* &&
+    echo
+    cat confdefs.h
+    echo
+  fi
+  test "$ac_signal" != 0 &&
+    printf '%s\n' "$as_me: caught signal $ac_signal"
+  printf '%s\n' "$as_me: exit $exit_status"
+}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.
+ac_exit_trap ()
+{
+  exit_status=
+  # Sanitize IFS.
+  IFS=" ""	$as_nl"
+  # Save into config.log some information that might help in debugging.
+  ac_dump_debugging_info >&5
+  eval "rm -f $ac_clean_CONFIG_STATUS core *.core core.conftest.*" &&
     rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
     exit $exit_status
-' 0
+}
+
+trap 'ac_exit_trap $?' 0
 for ac_signal in 1 2 13 15; do
   trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
 done
@@ -1967,21 +1970,21 @@ ac_signal=0
 # confdefs.h avoids OS command line length limits that DEFS can exceed.
 rm -f -r conftest* confdefs.h
 
-printf "%s\n" "/* confdefs.h */" > confdefs.h
+printf '%s\n' "/* confdefs.h */" > confdefs.h
 
 # Predefined preprocessor variables.
 
-printf "%s\n" "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h
+printf '%s\n' "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h
 
-printf "%s\n" "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h
+printf '%s\n' "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h
 
-printf "%s\n" "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h
+printf '%s\n' "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h
 
-printf "%s\n" "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h
+printf '%s\n' "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h
 
-printf "%s\n" "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h
+printf '%s\n' "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h
 
-printf "%s\n" "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h
+printf '%s\n' "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h
 
 
 # Let the site file select an alternate cache file if it wants to.
@@ -2003,12 +2006,12 @@ do
     ac_site_file=./$ac_site_file ;;
 esac
   if test -f "$ac_site_file" && test -r "$ac_site_file"; then
-    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
-printf "%s\n" "$as_me: loading site script $ac_site_file" >&6;}
+    { printf '%s\n' "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+printf '%s\n' "$as_me: loading site script $ac_site_file" >&6;}
     sed 's/^/| /' "$ac_site_file" >&5
     . "$ac_site_file" \
-      || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+      || { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf '%s\n' "$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
@@ -2018,27 +2021,120 @@ if test -r "$cache_file"; then
   # Some versions of bash will fail to source /dev/null (special files
   # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
   if test /dev/null != "$cache_file" && test -f "$cache_file"; then
-    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
-printf "%s\n" "$as_me: loading cache $cache_file" >&6;}
+    { printf '%s\n' "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+printf '%s\n' "$as_me: loading cache $cache_file" >&6;}
     case $cache_file in
       [\\/]* | ?:[\\/]* ) . "$cache_file";;
       *)                      . "./$cache_file";;
     esac
   fi
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
-printf "%s\n" "$as_me: creating cache $cache_file" >&6;}
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+printf '%s\n' "$as_me: creating cache $cache_file" >&6;}
   >$cache_file
 fi
 
+# Test code for whether the C compiler supports C23 (global declarations)
+ac_c_conftest_c23_globals='
+/* Does the compiler advertise conformance to C17 or earlier?
+   Although GCC 14 does not do that, even with -std=gnu23,
+   it is close enough, and defines __STDC_VERSION == 202000L.  */
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ <= 201710L
+# error "Compiler advertises conformance to C17 or earlier"
+#endif
+
+// Check alignas.
+char alignas (double) c23_aligned_as_double;
+char alignas (0) c23_no_special_alignment;
+extern char c23_aligned_as_int;
+char alignas (0) alignas (int) c23_aligned_as_int;
+
+// Check alignof.
+enum
+{
+  c23_int_alignment = alignof (int),
+  c23_int_array_alignment = alignof (int[100]),
+  c23_char_alignment = alignof (char)
+};
+static_assert (0 < -alignof (int), "alignof is signed");
+
+int function_with_unnamed_parameter (int) { return 0; }
+
+void c23_noreturn ();
+
+/* Test parsing of string and char UTF-8 literals (including hex escapes).
+   The parens pacify GCC 15.  */
+bool use_u8 = (!sizeof u8"\xFF") == (!u8'\''x'\'');
+
+bool check_that_bool_works = true | false | !nullptr;
+#if !true
+# error "true does not work in #if"
+#endif
+#if false
+#elifdef __STDC_VERSION__
+#else
+# error "#elifdef does not work"
+#endif
+
+#ifndef __has_c_attribute
+# error "__has_c_attribute not defined"
+#endif
+
+#ifndef __has_include
+# error "__has_include not defined"
+#endif
+
+#define LPAREN() (
+#define FORTY_TWO(x) 42
+#define VA_OPT_TEST(r, x, ...) __VA_OPT__ (FORTY_TWO r x))
+static_assert (VA_OPT_TEST (LPAREN (), 0, <:-) == 42);
+
+static_assert (0b101010 == 42);
+static_assert (0B101010 == 42);
+static_assert (0xDEAD'\''BEEF == 3'\''735'\''928'\''559);
+static_assert (0.500'\''000'\''000 == 0.5);
+
+enum unsignedish : unsigned int { uione = 1 };
+static_assert (0 < -uione);
+
+#include <stddef.h>
+constexpr nullptr_t null_pointer = nullptr;
+
+static typeof (1 + 1L) two () { return 2; }
+static long int three () { return 3; }
+'
+
+# Test code for whether the C compiler supports C23 (body of main).
+ac_c_conftest_c23_main='
+  {
+    label_before_declaration:
+      int arr[10] = {};
+      if (arr[0])
+        goto label_before_declaration;
+      if (!arr[0])
+        goto label_at_end_of_block;
+    label_at_end_of_block:
+  }
+  ok |= !null_pointer;
+  ok |= two != three;
+'
+
+# Test code for whether the C compiler supports C23 (complete).
+ac_c_conftest_c23_program="${ac_c_conftest_c23_globals}
+
+int
+main (int, char **)
+{
+  int ok = 0;
+  ${ac_c_conftest_c23_main}
+  return ok;
+}
+"
+
 # Test code for whether the C compiler supports C89 (global declarations)
 ac_c_conftest_c89_globals='
-/* Does the compiler advertise C89 conformance?
-   Do not test the value of __STDC__, because some compilers set it to 0
-   while being otherwise adequately conformant. */
-#if !defined __STDC__
-# error "Compiler does not advertise C89 conformance"
-#endif
+/* Do not test the value of __STDC__, because some compilers define it to 0
+   or do not define it, while otherwise adequately conforming.  */
 
 #include <stddef.h>
 #include <stdarg.h>
@@ -2118,7 +2214,8 @@ extern void free (void *);
 
 // Check varargs macros.  These examples are taken from C99 6.10.3.5.
 // dprintf is used instead of fprintf to avoid needing to declare
-// FILE and stderr.
+// FILE and stderr, and "aND" is used instead of "and" to work around
+// GCC bug 40564 which is irrelevant here.
 #define debug(...) dprintf (2, __VA_ARGS__)
 #define showlist(...) puts (#__VA_ARGS__)
 #define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
@@ -2129,7 +2226,7 @@ test_varargs_macros (void)
   int y = 5678;
   debug ("Flag");
   debug ("X = %d\n", x);
-  showlist (The first, second, and third items.);
+  showlist (The first, second, aND third items.);
   report (x>y, "x is %d but y is %d", x, y);
 }
 
@@ -2217,15 +2314,15 @@ ac_c_conftest_c99_main='
   // Check restrict.
   if (test_restrict ("String literal") == 0)
     success = true;
-  char *restrict newvar = "Another string";
+  const char *restrict newvar = "Another string";
 
   // Check varargs.
   success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234);
   test_varargs_macros ();
 
   // Check flexible array members.
-  struct incomplete_array *ia =
-    malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
+  static struct incomplete_array *volatile incomplete_array_pointer;
+  struct incomplete_array *ia = incomplete_array_pointer;
   ia->datasize = 10;
   for (int i = 0; i < ia->datasize; ++i)
     ia->data[i] = i * 1.234;
@@ -2241,13 +2338,12 @@ ac_c_conftest_c99_main='
 
   ni.number = 58;
 
-  int dynamic_array[ni.number];
-  dynamic_array[0] = argv[0][0];
-  dynamic_array[ni.number - 1] = 543;
+  // Do not test for VLAs, as some otherwise-conforming compilers lack them.
+  // C code should instead use __STDC_NO_VLA__; see Autoconf manual.
 
   // work around unused variable warnings
   ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''
-	 || dynamic_array[ni.number - 1] != 543);
+	 || ni.number != 58);
 '
 
 # Test code for whether the C compiler supports C11 (global declarations)
@@ -2379,7 +2475,7 @@ ac_aux_dir_candidates="${srcdir}${PATH_SEPARATOR}${src
 # $ac_aux_dir_candidates and give up.
 ac_missing_aux_files=""
 ac_first_candidate=:
-printf "%s\n" "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5
+printf '%s\n' "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 as_found=false
 for as_dir in $ac_aux_dir_candidates
@@ -2392,7 +2488,7 @@ do
   esac
   as_found=:
 
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}:  trying $as_dir" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}:  trying $as_dir" >&5
   ac_aux_dir_found=yes
   ac_install_sh=
   for ac_aux in $ac_aux_files
@@ -2403,13 +2499,13 @@ do
     if test x"$ac_aux" = x"install-sh"
     then
       if test -f "${as_dir}install-sh"; then
-        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install-sh found" >&5
+        printf '%s\n' "$as_me:${as_lineno-$LINENO}:   ${as_dir}install-sh found" >&5
         ac_install_sh="${as_dir}install-sh -c"
       elif test -f "${as_dir}install.sh"; then
-        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install.sh found" >&5
+        printf '%s\n' "$as_me:${as_lineno-$LINENO}:   ${as_dir}install.sh found" >&5
         ac_install_sh="${as_dir}install.sh -c"
       elif test -f "${as_dir}shtool"; then
-        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}shtool found" >&5
+        printf '%s\n' "$as_me:${as_lineno-$LINENO}:   ${as_dir}shtool found" >&5
         ac_install_sh="${as_dir}shtool install -c"
       else
         ac_aux_dir_found=no
@@ -2421,7 +2517,7 @@ do
       fi
     else
       if test -f "${as_dir}${ac_aux}"; then
-        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}${ac_aux} found" >&5
+        printf '%s\n' "$as_me:${as_lineno-$LINENO}:   ${as_dir}${ac_aux} found" >&5
       else
         ac_aux_dir_found=no
         if $ac_first_candidate; then
@@ -2474,38 +2570,44 @@ for ac_var in $ac_precious_vars; do
   eval ac_new_val=\$ac_env_${ac_var}_value
   case $ac_old_set,$ac_new_set in
     set,)
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&5
-printf "%s\n" "$as_me: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&2;}
+      { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&5
+printf '%s\n' "$as_me: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&2;}
       ac_cache_corrupted=: ;;
     ,set)
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was not set in the previous run" >&5
-printf "%s\n" "$as_me: error: '$ac_var' was not set in the previous run" >&2;}
+      { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was not set in the previous run" >&5
+printf '%s\n' "$as_me: error: '$ac_var' was not set in the previous run" >&2;}
       ac_cache_corrupted=: ;;
     ,);;
     *)
       if test "x$ac_old_val" != "x$ac_new_val"; then
 	# differences in whitespace do not lead to failure.
-	ac_old_val_w=`echo x $ac_old_val`
-	ac_new_val_w=`echo x $ac_new_val`
+	ac_old_val_w=
+	for ac_val in x $ac_old_val; do
+	  ac_old_val_w="$ac_old_val_w $ac_val"
+	done
+	ac_new_val_w=
+	for ac_val in x $ac_new_val; do
+	  ac_new_val_w="$ac_new_val_w $ac_val"
+	done
 	if test "$ac_old_val_w" != "$ac_new_val_w"; then
-	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' has changed since the previous run:" >&5
-printf "%s\n" "$as_me: error: '$ac_var' has changed since the previous run:" >&2;}
+	  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' has changed since the previous run:" >&5
+printf '%s\n' "$as_me: error: '$ac_var' has changed since the previous run:" >&2;}
 	  ac_cache_corrupted=:
 	else
-	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&5
-printf "%s\n" "$as_me: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&2;}
+	  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&5
+printf '%s\n' "$as_me: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&2;}
 	  eval $ac_var=\$ac_old_val
 	fi
-	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   former value:  '$ac_old_val'" >&5
-printf "%s\n" "$as_me:   former value:  '$ac_old_val'" >&2;}
-	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   current value: '$ac_new_val'" >&5
-printf "%s\n" "$as_me:   current value: '$ac_new_val'" >&2;}
+	{ printf '%s\n' "$as_me:${as_lineno-$LINENO}:   former value:  '$ac_old_val'" >&5
+printf '%s\n' "$as_me:   former value:  '$ac_old_val'" >&2;}
+	{ printf '%s\n' "$as_me:${as_lineno-$LINENO}:   current value: '$ac_new_val'" >&5
+printf '%s\n' "$as_me:   current value: '$ac_new_val'" >&2;}
       fi;;
   esac
   # Pass precious variables to config.status.
   if test "$ac_new_set" = set; then
     case $ac_new_val in
-    *\'*) ac_arg=$ac_var=`printf "%s\n" "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *\'*) ac_arg=$ac_var=`printf '%s\n' "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
     *) ac_arg=$ac_var=$ac_new_val ;;
     esac
     case " $ac_configure_args " in
@@ -2515,10 +2617,10 @@ printf "%s\n" "$as_me:   current value: '$ac_new_val'"
   fi
 done
 if $ac_cache_corrupted; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
-printf "%s\n" "$as_me: error: changes in the environment can compromise the build" >&2;}
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+printf '%s\n' "$as_me: error: changes in the environment can compromise the build" >&2;}
   as_fn_error $? "run '${MAKE-make} distclean' and/or 'rm $cache_file'
 	    and start over" "$LINENO" 5
 fi
@@ -2526,6 +2628,23 @@ fi
 ## Main body of script. ##
 ## -------------------- ##
 
+
+# Determine whether it's possible to make 'echo' print without a newline.
+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
+# for compatibility with existing Makefiles.
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -2550,6 +2669,9 @@ ac_cv_func_realloc_0_nonnull="yes"
 
 
 
+
+
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -2558,7 +2680,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
@@ -2579,7 +2701,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}gcc"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2591,11 +2713,11 @@ esac
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-printf "%s\n" "$CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf '%s\n' "$CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -2604,7 +2726,7 @@ if test -z "$ac_cv_prog_CC"; then
   ac_ct_CC=$CC
   # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_CC+y}
 then :
@@ -2625,7 +2747,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="gcc"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2637,11 +2759,11 @@ esac
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
-printf "%s\n" "$ac_ct_CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf '%s\n' "$ac_ct_CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
   if test "x$ac_ct_CC" = x; then
@@ -2649,8 +2771,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CC=$ac_ct_CC
@@ -2663,7 +2785,7 @@ if test -z "$CC"; then
           if test -n "$ac_tool_prefix"; then
     # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
 set dummy ${ac_tool_prefix}cc; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
@@ -2684,7 +2806,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}cc"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2696,11 +2818,11 @@ esac
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-printf "%s\n" "$CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf '%s\n' "$CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -2709,7 +2831,7 @@ fi
 if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
@@ -2735,7 +2857,7 @@ do
        continue
      fi
     ac_cv_prog_CC="cc"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2759,11 +2881,11 @@ esac
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-printf "%s\n" "$CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf '%s\n' "$CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -2774,7 +2896,7 @@ if test -z "$CC"; then
   do
     # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
 set dummy $ac_tool_prefix$ac_prog; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
@@ -2795,7 +2917,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2807,11 +2929,11 @@ esac
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-printf "%s\n" "$CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf '%s\n' "$CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -2824,7 +2946,7 @@ if test -z "$CC"; then
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_CC+y}
 then :
@@ -2845,7 +2967,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="$ac_prog"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2857,11 +2979,11 @@ esac
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
-printf "%s\n" "$ac_ct_CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf '%s\n' "$ac_ct_CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -2873,8 +2995,8 @@ done
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CC=$ac_ct_CC
@@ -2886,7 +3008,7 @@ if test -z "$CC"; then
   if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args.
 set dummy ${ac_tool_prefix}clang; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_CC+y}
 then :
@@ -2907,7 +3029,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}clang"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2919,11 +3041,11 @@ esac
 fi
 CC=$ac_cv_prog_CC
 if test -n "$CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-printf "%s\n" "$CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf '%s\n' "$CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -2932,7 +3054,7 @@ if test -z "$ac_cv_prog_CC"; then
   ac_ct_CC=$CC
   # Extract the first word of "clang", so it can be a program name with args.
 set dummy clang; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_CC+y}
 then :
@@ -2953,7 +3075,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="clang"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -2965,11 +3087,11 @@ esac
 fi
 ac_ct_CC=$ac_cv_prog_ac_ct_CC
 if test -n "$ac_ct_CC"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
-printf "%s\n" "$ac_ct_CC" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf '%s\n' "$ac_ct_CC" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
   if test "x$ac_ct_CC" = x; then
@@ -2977,8 +3099,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     CC=$ac_ct_CC
@@ -2990,13 +3112,13 @@ fi
 fi
 
 
-test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+test -z "$CC" && { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}
 as_fn_error $? "no acceptable C compiler found in \$PATH
 See 'config.log' for more details" "$LINENO" 5; }
 
 # Provide some information about the compiler.
-printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
 set X $ac_compile
 ac_compiler=$2
 for ac_option in --version -v -V -qversion -version; do
@@ -3006,7 +3128,7 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_compiler $ac_option >&5") 2>conftest.err
   ac_status=$?
   if test -s conftest.err; then
@@ -3016,7 +3138,7 @@ printf "%s\n" "$ac_try_echo"; } >&5
     cat conftest.er1 >&5
   fi
   rm -f conftest.er1 conftest.err
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
 done
 
@@ -3036,9 +3158,9 @@ ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe
 # Try to create an executable without -o first, disregard a.out.
 # It will help us diagnose broken compilers, and finding out an intuition
 # of exeext.
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
 printf %s "checking whether the C compiler works... " >&6; }
-ac_link_default=`printf "%s\n" "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+ac_link_default=`printf '%s\n' "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
 
 # The possible output files:
 ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
@@ -3059,10 +3181,10 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_link_default") 2>&5
   ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
 then :
   # Autoconf-2.13 could set the ac_cv_exeext variable to 'no'.
@@ -3103,29 +3225,29 @@ esac
 fi
 if test -z "$ac_file"
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-printf "%s\n" "$as_me: failed program was:" >&5
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
+printf '%s\n' "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+{ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}
 as_fn_error 77 "C compiler cannot create executables
 See 'config.log' for more details" "$LINENO" 5; }
 else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; } ;;
+  e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf '%s\n' "yes" >&6; } ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
 printf %s "checking for C compiler default output file name... " >&6; }
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
-printf "%s\n" "$ac_file" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+printf '%s\n' "$ac_file" >&6; }
 ac_exeext=$ac_cv_exeext
 
 rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
 ac_clean_files=$ac_clean_files_save
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
 printf %s "checking for suffix of executables... " >&6; }
 if { { ac_try="$ac_link"
 case "(($ac_try" in
@@ -3133,10 +3255,10 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_link") 2>&5
   ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
 then :
   # If both 'conftest.exe' and 'conftest' are 'present' (well, observable)
@@ -3153,15 +3275,15 @@ for ac_file in conftest.exe conftest conftest.*; do
   esac
 done
 else case e in #(
-  e) { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+  e) { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf '%s\n' "$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; } ;;
 esac
 fi
 rm -f conftest conftest$ac_cv_exeext
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
-printf "%s\n" "$ac_cv_exeext" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+printf '%s\n' "$ac_cv_exeext" >&6; }
 
 rm -f conftest.$ac_ext
 EXEEXT=$ac_cv_exeext
@@ -3184,7 +3306,7 @@ _ACEOF
 ac_clean_files="$ac_clean_files conftest.out"
 # Check that the compiler produces executables we can run.  If not, either
 # the compiler is broken, or we cross compile.
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
 printf %s "checking whether we are cross compiling... " >&6; }
 if test "$cross_compiling" != yes; then
   { { ac_try="$ac_link"
@@ -3193,10 +3315,10 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_link") 2>&5
   ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
   if { ac_try='./conftest$ac_cv_exeext'
   { { case "(($ac_try" in
@@ -3204,31 +3326,31 @@ printf "%s\n" "$ac_try_echo"; } >&5
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_try") 2>&5
   ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; }; then
     cross_compiling=no
   else
     if test "$cross_compiling" = maybe; then
 	cross_compiling=yes
     else
-	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+	{ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}
 as_fn_error 77 "cannot run C compiled programs.
 If you meant to cross compile, use '--host'.
 See 'config.log' for more details" "$LINENO" 5; }
     fi
   fi
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
-printf "%s\n" "$cross_compiling" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+printf '%s\n' "$cross_compiling" >&6; }
 
 rm -f conftest.$ac_ext conftest$ac_cv_exeext \
   conftest.o conftest.obj conftest.out
 ac_clean_files=$ac_clean_files_save
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
 printf %s "checking for suffix of object files... " >&6; }
 if test ${ac_cv_objext+y}
 then :
@@ -3252,10 +3374,10 @@ case "(($ac_try" in
   *) ac_try_echo=$ac_try;;
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-printf "%s\n" "$ac_try_echo"; } >&5
+printf '%s\n' "$ac_try_echo"; } >&5
   (eval "$ac_compile") 2>&5
   ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }
 then :
   for ac_file in conftest.o conftest.obj conftest.*; do
@@ -3267,11 +3389,11 @@ then :
   esac
 done
 else case e in #(
-  e) printf "%s\n" "$as_me: failed program was:" >&5
+  e) printf '%s\n' "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+{ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of object files: cannot compile
 See 'config.log' for more details" "$LINENO" 5; } ;;
 esac
@@ -3279,11 +3401,11 @@ fi
 rm -f conftest.$ac_cv_objext conftest.$ac_ext ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
-printf "%s\n" "$ac_cv_objext" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+printf '%s\n' "$ac_cv_objext" >&6; }
 OBJEXT=$ac_cv_objext
 ac_objext=$OBJEXT
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5
 printf %s "checking whether the compiler supports GNU C... " >&6; }
 if test ${ac_cv_c_compiler_gnu+y}
 then :
@@ -3315,8 +3437,8 @@ ac_cv_c_compiler_gnu=$ac_compiler_gnu
  ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
-printf "%s\n" "$ac_cv_c_compiler_gnu" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+printf '%s\n' "$ac_cv_c_compiler_gnu" >&6; }
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 if test $ac_compiler_gnu = yes; then
@@ -3326,7 +3448,7 @@ else
 fi
 ac_test_CFLAGS=${CFLAGS+y}
 ac_save_CFLAGS=$CFLAGS
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
 printf %s "checking whether $CC accepts -g... " >&6; }
 if test ${ac_cv_prog_cc_g+y}
 then :
@@ -3394,8 +3516,8 @@ rm -f core conftest.err conftest.$ac_objext conftest.b
    ac_c_werror_flag=$ac_save_c_werror_flag ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
-printf "%s\n" "$ac_cv_prog_cc_g" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+printf '%s\n' "$ac_cv_prog_cc_g" >&6; }
 if test $ac_test_CFLAGS; then
   CFLAGS=$ac_save_CFLAGS
 elif test $ac_cv_prog_cc_g = yes; then
@@ -3414,7 +3536,56 @@ fi
 ac_prog_cc_stdc=no
 if test x$ac_prog_cc_stdc = xno
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C23 features" >&5
+printf %s "checking for $CC option to enable C23 features... " >&6; }
+if test ${ac_cv_prog_cc_c23+y}
+then :
+  printf %s "(cached) " >&6
+else case e in #(
+  e) ac_cv_prog_cc_c23=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c23_program
+_ACEOF
+for ac_arg in '' -std=gnu23
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c23=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c23" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC ;;
+esac
+fi
+
+if test "x$ac_cv_prog_cc_c23" = xno
+then :
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf '%s\n' "unsupported" >&6; }
+else case e in #(
+  e) if test "x$ac_cv_prog_cc_c23" = x
+then :
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf '%s\n' "none needed" >&6; }
+else case e in #(
+  e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c23" >&5
+printf '%s\n' "$ac_cv_prog_cc_c23" >&6; }
+     CC="$CC $ac_cv_prog_cc_c23" ;;
+esac
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c23
+  ac_prog_cc_stdc=c23 ;;
+esac
+fi
+fi
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5
 printf %s "checking for $CC option to enable C11 features... " >&6; }
 if test ${ac_cv_prog_cc_c11+y}
 then :
@@ -3426,7 +3597,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 $ac_c_conftest_c11_program
 _ACEOF
-for ac_arg in '' -std=gnu11
+for ac_arg in '' -std=gnu11 -std:c11
 do
   CC="$ac_save_CC $ac_arg"
   if ac_fn_c_try_compile "$LINENO"
@@ -3443,16 +3614,16 @@ fi
 
 if test "x$ac_cv_prog_cc_c11" = xno
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
-printf "%s\n" "unsupported" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf '%s\n' "unsupported" >&6; }
 else case e in #(
   e) if test "x$ac_cv_prog_cc_c11" = x
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
-printf "%s\n" "none needed" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf '%s\n' "none needed" >&6; }
 else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5
-printf "%s\n" "$ac_cv_prog_cc_c11" >&6; }
+  e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5
+printf '%s\n' "$ac_cv_prog_cc_c11" >&6; }
      CC="$CC $ac_cv_prog_cc_c11" ;;
 esac
 fi
@@ -3463,7 +3634,7 @@ fi
 fi
 if test x$ac_prog_cc_stdc = xno
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5
 printf %s "checking for $CC option to enable C99 features... " >&6; }
 if test ${ac_cv_prog_cc_c99+y}
 then :
@@ -3492,16 +3663,16 @@ fi
 
 if test "x$ac_cv_prog_cc_c99" = xno
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
-printf "%s\n" "unsupported" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf '%s\n' "unsupported" >&6; }
 else case e in #(
   e) if test "x$ac_cv_prog_cc_c99" = x
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
-printf "%s\n" "none needed" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf '%s\n' "none needed" >&6; }
 else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
-printf "%s\n" "$ac_cv_prog_cc_c99" >&6; }
+  e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
+printf '%s\n' "$ac_cv_prog_cc_c99" >&6; }
      CC="$CC $ac_cv_prog_cc_c99" ;;
 esac
 fi
@@ -3512,7 +3683,7 @@ fi
 fi
 if test x$ac_prog_cc_stdc = xno
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5
 printf %s "checking for $CC option to enable C89 features... " >&6; }
 if test ${ac_cv_prog_cc_c89+y}
 then :
@@ -3541,16 +3712,16 @@ fi
 
 if test "x$ac_cv_prog_cc_c89" = xno
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
-printf "%s\n" "unsupported" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf '%s\n' "unsupported" >&6; }
 else case e in #(
   e) if test "x$ac_cv_prog_cc_c89" = x
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
-printf "%s\n" "none needed" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf '%s\n' "none needed" >&6; }
 else case e in #(
-  e) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
-printf "%s\n" "$ac_cv_prog_cc_c89" >&6; }
+  e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+printf '%s\n' "$ac_cv_prog_cc_c89" >&6; }
      CC="$CC $ac_cv_prog_cc_c89" ;;
 esac
 fi
@@ -3582,7 +3753,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 # OS/2's system install, which has a completely different semantic
 # ./install, which can be erroneously created by make from ./install.sh.
 # Reject install programs that cannot install multiple files.
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
 printf %s "checking for a BSD-compatible install... " >&6; }
 if test -z "$INSTALL"; then
 if test ${ac_cv_path_install+y}
@@ -3605,8 +3776,8 @@ case $as_dir in #((
   ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
   /usr/ucb/* ) ;;
   *)
-    # OSF1 and SCO ODT 3.0 have their own names for install.
-    # Don't use installbsd from OSF since it installs stuff as root
+    # OSF/1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF/1 since it installs stuff as root
     # by default.
     for ac_prog in ginstall scoinst install; do
       for ac_exec_ext in '' $ac_executable_extensions; do
@@ -3656,8 +3827,8 @@ fi
     INSTALL=$ac_install_sh
   fi
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
-printf "%s\n" "$INSTALL" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+printf '%s\n' "$INSTALL" >&6; }
 
 # Use test -z because SunOS4 sh mishandles braces in ${var-val}.
 # It thinks the first close brace ends the variable substitution.
@@ -3670,7 +3841,7 @@ test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ranlib; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_RANLIB+y}
 then :
@@ -3691,7 +3862,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3703,11 +3874,11 @@ esac
 fi
 RANLIB=$ac_cv_prog_RANLIB
 if test -n "$RANLIB"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
-printf "%s\n" "$RANLIB" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+printf '%s\n' "$RANLIB" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -3716,7 +3887,7 @@ if test -z "$ac_cv_prog_RANLIB"; then
   ac_ct_RANLIB=$RANLIB
   # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_RANLIB+y}
 then :
@@ -3737,7 +3908,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_RANLIB="ranlib"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3749,11 +3920,11 @@ esac
 fi
 ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
 if test -n "$ac_ct_RANLIB"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
-printf "%s\n" "$ac_ct_RANLIB" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+printf '%s\n' "$ac_ct_RANLIB" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
   if test "x$ac_ct_RANLIB" = x; then
@@ -3761,8 +3932,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     RANLIB=$ac_ct_RANLIB
@@ -3778,7 +3949,7 @@ fi
 $SHELL "${ac_aux_dir}config.sub" sun4 >/dev/null 2>&1 ||
   as_fn_error $? "cannot run $SHELL ${ac_aux_dir}config.sub" "$LINENO" 5
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
 printf %s "checking build system type... " >&6; }
 if test ${ac_cv_build+y}
 then :
@@ -3794,8 +3965,8 @@ ac_cv_build=`$SHELL "${ac_aux_dir}config.sub" $ac_buil
  ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
-printf "%s\n" "$ac_cv_build" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+printf '%s\n' "$ac_cv_build" >&6; }
 case $ac_cv_build in
 *-*-*) ;;
 *) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
@@ -3811,10 +3982,10 @@ shift; shift
 # except with old shells:
 build_os=$*
 IFS=$ac_save_IFS
-case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+case $build_os in *\ *) build_os=`printf '%s\n' "$build_os" | sed 's/ /-/g'`;; esac
 
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
 printf %s "checking host system type... " >&6; }
 if test ${ac_cv_host+y}
 then :
@@ -3829,8 +4000,8 @@ fi
  ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
-printf "%s\n" "$ac_cv_host" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+printf '%s\n' "$ac_cv_host" >&6; }
 case $ac_cv_host in
 *-*-*) ;;
 *) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
@@ -3846,10 +4017,10 @@ shift; shift
 # except with old shells:
 host_os=$*
 IFS=$ac_save_IFS
-case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+case $host_os in *\ *) host_os=`printf '%s\n' "$host_os" | sed 's/ /-/g'`;; esac
 
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking target system type" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking target system type" >&5
 printf %s "checking target system type... " >&6; }
 if test ${ac_cv_target+y}
 then :
@@ -3864,8 +4035,8 @@ fi
  ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_target" >&5
-printf "%s\n" "$ac_cv_target" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_target" >&5
+printf '%s\n' "$ac_cv_target" >&6; }
 case $ac_cv_target in
 *-*-*) ;;
 *) as_fn_error $? "invalid value of canonical target" "$LINENO" 5;;
@@ -3881,7 +4052,7 @@ shift; shift
 # except with old shells:
 target_os=$*
 IFS=$ac_save_IFS
-case $target_os in *\ *) target_os=`echo "$target_os" | sed 's/ /-/g'`;; esac
+case $target_os in *\ *) target_os=`printf '%s\n' "$target_os" | sed 's/ /-/g'`;; esac
 
 
 # The aliases save the names the user supplied, while $host etc.
@@ -3894,7 +4065,7 @@ test -n "$target_alias" &&
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}mkdep", so it can be a program name with args.
 set dummy ${ac_tool_prefix}mkdep; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_MKDEP+y}
 then :
@@ -3915,7 +4086,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_MKDEP="${ac_tool_prefix}mkdep"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3927,11 +4098,11 @@ esac
 fi
 MKDEP=$ac_cv_prog_MKDEP
 if test -n "$MKDEP"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MKDEP" >&5
-printf "%s\n" "$MKDEP" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $MKDEP" >&5
+printf '%s\n' "$MKDEP" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
 
@@ -3940,7 +4111,7 @@ if test -z "$ac_cv_prog_MKDEP"; then
   ac_ct_MKDEP=$MKDEP
   # Extract the first word of "mkdep", so it can be a program name with args.
 set dummy mkdep; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 printf %s "checking for $ac_word... " >&6; }
 if test ${ac_cv_prog_ac_ct_MKDEP+y}
 then :
@@ -3961,7 +4132,7 @@ do
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_MKDEP="mkdep"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
@@ -3973,11 +4144,11 @@ esac
 fi
 ac_ct_MKDEP=$ac_cv_prog_ac_ct_MKDEP
 if test -n "$ac_ct_MKDEP"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MKDEP" >&5
-printf "%s\n" "$ac_ct_MKDEP" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MKDEP" >&5
+printf '%s\n' "$ac_ct_MKDEP" >&6; }
 else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf '%s\n' "no" >&6; }
 fi
 
   if test "x$ac_ct_MKDEP" = x; then
@@ -3985,8 +4156,8 @@ fi
   else
     case $cross_compiling:$ac_tool_warned in
 yes:)
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
 ac_tool_warned=yes ;;
 esac
     MKDEP=$ac_ct_MKDEP
@@ -4007,7 +4178,7 @@ if test "${ac_cv_env_LDFLAGS_set}" = "set"; then
 fi
 
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_mutex_init in -lpthread" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for pthread_mutex_init in -lpthread" >&5
 printf %s "checking for pthread_mutex_init in -lpthread... " >&6; }
 if test ${ac_cv_lib_pthread_pthread_mutex_init+y}
 then :
@@ -4048,11 +4219,11 @@ rm -f core conftest.err conftest.$ac_objext conftest.b
 LIBS=$ac_check_lib_save_LIBS ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_mutex_init" >&5
-printf "%s\n" "$ac_cv_lib_pthread_pthread_mutex_init" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_mutex_init" >&5
+printf '%s\n' "$ac_cv_lib_pthread_pthread_mutex_init" >&6; }
 if test "x$ac_cv_lib_pthread_pthread_mutex_init" = xyes
 then :
-  printf "%s\n" "#define HAVE_LIBPTHREAD 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_LIBPTHREAD 1" >>confdefs.h
 
   LIBS="-lpthread $LIBS"
 
@@ -4066,7 +4237,7 @@ do
   if test $ac_cache; then
     ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"
     if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then
-      printf "%s\n" "#define $ac_item 1" >> confdefs.h
+      printf '%s\n' "#define $ac_item 1" >> confdefs.h
     fi
     ac_header= ac_cache=
   elif test $ac_header; then
@@ -4086,43 +4257,43 @@ done
 if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes
 then :
 
-printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
+printf '%s\n' "#define STDC_HEADERS 1" >>confdefs.h
 
 fi
 ac_fn_c_check_header_compile "$LINENO" "stdlib.h" "ac_cv_header_stdlib_h" "$ac_includes_default"
 if test "x$ac_cv_header_stdlib_h" = xyes
 then :
-  printf "%s\n" "#define HAVE_STDLIB_H 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_STDLIB_H 1" >>confdefs.h
 
 fi
 ac_fn_c_check_header_compile "$LINENO" "string.h" "ac_cv_header_string_h" "$ac_includes_default"
 if test "x$ac_cv_header_string_h" = xyes
 then :
-  printf "%s\n" "#define HAVE_STRING_H 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_STRING_H 1" >>confdefs.h
 
 fi
 ac_fn_c_check_header_compile "$LINENO" "sys/ioctl.h" "ac_cv_header_sys_ioctl_h" "$ac_includes_default"
 if test "x$ac_cv_header_sys_ioctl_h" = xyes
 then :
-  printf "%s\n" "#define HAVE_SYS_IOCTL_H 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_SYS_IOCTL_H 1" >>confdefs.h
 
 fi
 ac_fn_c_check_header_compile "$LINENO" "termios.h" "ac_cv_header_termios_h" "$ac_includes_default"
 if test "x$ac_cv_header_termios_h" = xyes
 then :
-  printf "%s\n" "#define HAVE_TERMIOS_H 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_TERMIOS_H 1" >>confdefs.h
 
 fi
 ac_fn_c_check_header_compile "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default"
 if test "x$ac_cv_header_unistd_h" = xyes
 then :
-  printf "%s\n" "#define HAVE_UNISTD_H 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_UNISTD_H 1" >>confdefs.h
 
 fi
 
 
 # Checks for typedefs, structures, and compiler characteristics.
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for inline" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for inline" >&5
 printf %s "checking for inline... " >&6; }
 if test ${ac_cv_c_inline+y}
 then :
@@ -4149,8 +4320,8 @@ done
  ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_inline" >&5
-printf "%s\n" "$ac_cv_c_inline" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_inline" >&5
+printf '%s\n' "$ac_cv_c_inline" >&6; }
 
 case $ac_cv_c_inline in
   inline | yes) ;;
@@ -4171,41 +4342,46 @@ ac_fn_c_check_type "$LINENO" "uuid_t" "ac_cv_type_uuid
 if test "x$ac_cv_type_uuid_t" = xyes
 then :
 
-printf "%s\n" "#define HAVE_UUID_T 1" >>confdefs.h
+printf '%s\n' "#define HAVE_UUID_T 1" >>confdefs.h
 
 
 fi
 
 
 # Checks for library functions.
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for GNU libc compatible malloc" >&5
-printf %s "checking for GNU libc compatible malloc... " >&6; }
+
+    { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether malloc (0) returns nonnull" >&5
+printf %s "checking whether malloc (0) returns nonnull... " >&6; }
 if test ${ac_cv_func_malloc_0_nonnull+y}
 then :
   printf %s "(cached) " >&6
 else case e in #(
   e) if test "$cross_compiling" = yes
 then :
-  case "$host_os" in # ((
-		  # Guess yes on platforms where we know the result.
-		  *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
-		  | hpux* | solaris* | cygwin* | mingw* | windows* | msys* )
-		    ac_cv_func_malloc_0_nonnull=yes ;;
-		  # If we don't know, assume the worst.
-		  *) ac_cv_func_malloc_0_nonnull=no ;;
-		esac
+  case $host_os in #(
+  # Guess yes on platforms where we know the result.
+           *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
+           | gnu* | *-musl* | midipix* | midnightbsd* \
+           | hpux* | solaris* | cygwin* | mingw* | windows* | msys*) :
+    ac_cv_func_malloc_0_nonnull="guessing yes" ;; #(
+  *) :
+    # Guess as follows if we don't know.
+           ac_cv_func_malloc_0_nonnull="guessing yes" ;;
+esac
 else case e in #(
   e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdlib.h>
-
+            /* Use pmalloc to test; 'volatile' prevents the compiler
+               from optimizing the malloc call away.  */
+            void *(*volatile pmalloc) (size_t) = malloc;
 int
 main (void)
 {
-void *p = malloc (0);
-		   int result = !p;
-		   free (p);
-		   return result;
+void *p = pmalloc (0);
+            int result = !p;
+            free (p);
+            return result;
   ;
   return 0;
 }
@@ -4224,16 +4400,16 @@ fi
  ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_malloc_0_nonnull" >&5
-printf "%s\n" "$ac_cv_func_malloc_0_nonnull" >&6; }
-if test $ac_cv_func_malloc_0_nonnull = yes
-then :
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_malloc_0_nonnull" >&5
+printf '%s\n' "$ac_cv_func_malloc_0_nonnull" >&6; }
+  case $ac_cv_func_malloc_0_nonnull in #(
+  *yes) :
 
-printf "%s\n" "#define HAVE_MALLOC 1" >>confdefs.h
+printf '%s\n' "#define HAVE_MALLOC 1" >>confdefs.h
+ ;; #(
+  *) :
+    printf '%s\n' "#define HAVE_MALLOC 0" >>confdefs.h
 
-else case e in #(
-  e) printf "%s\n" "#define HAVE_MALLOC 0" >>confdefs.h
-
    case " $LIBOBJS " in
   *" malloc.$ac_objext "* ) ;;
   *) LIBOBJS="$LIBOBJS malloc.$ac_objext"
@@ -4241,40 +4417,44 @@ else case e in #(
 esac
 
 
-printf "%s\n" "#define malloc rpl_malloc" >>confdefs.h
+printf '%s\n' "#define malloc rpl_malloc" >>confdefs.h
  ;;
 esac
-fi
 
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for GNU libc compatible realloc" >&5
-printf %s "checking for GNU libc compatible realloc... " >&6; }
+
+    { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether realloc (0, 0) returns nonnull" >&5
+printf %s "checking whether realloc (0, 0) returns nonnull... " >&6; }
 if test ${ac_cv_func_realloc_0_nonnull+y}
 then :
   printf %s "(cached) " >&6
 else case e in #(
   e) if test "$cross_compiling" = yes
 then :
-  case "$host_os" in # ((
-		  # Guess yes on platforms where we know the result.
-		  *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
-		  | hpux* | solaris* | cygwin* | mingw* | windows* | msys* )
-		    ac_cv_func_realloc_0_nonnull=yes ;;
-		  # If we don't know, assume the worst.
-		  *) ac_cv_func_realloc_0_nonnull=no ;;
-		esac
+  case $host_os in #(
+  # Guess yes on platforms where we know the result.
+           *-gnu* | freebsd* | netbsd* | openbsd* | bitrig* \
+           | gnu* | *-musl* | midipix* | midnightbsd* \
+           | hpux* | solaris* | cygwin* | mingw* | windows* | msys*) :
+    ac_cv_func_realloc_0_nonnull="guessing yes" ;; #(
+  *) :
+    # Guess as follows if we don't know.
+           ac_cv_func_realloc_0_nonnull="guessing no" ;;
+esac
 else case e in #(
   e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdlib.h>
-
+            /* Use prealloc to test; 'volatile' prevents the compiler
+               from optimizing the realloc call away.  */
+            void *(*volatile prealloc) (void *, size_t) = realloc;
 int
 main (void)
 {
-void *p = realloc (0, 0);
-		   int result = !p;
-		   free (p);
-		   return result;
+void *p = prealloc (0, 0);
+            int result = !p;
+            free (p);
+            return result;
   ;
   return 0;
 }
@@ -4293,16 +4473,16 @@ fi
  ;;
 esac
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_realloc_0_nonnull" >&5
-printf "%s\n" "$ac_cv_func_realloc_0_nonnull" >&6; }
-if test $ac_cv_func_realloc_0_nonnull = yes
-then :
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_realloc_0_nonnull" >&5
+printf '%s\n' "$ac_cv_func_realloc_0_nonnull" >&6; }
+  case $ac_cv_func_realloc_0_nonnull in #(
+  *yes) :
 
-printf "%s\n" "#define HAVE_REALLOC 1" >>confdefs.h
+printf '%s\n' "#define HAVE_REALLOC 1" >>confdefs.h
+ ;; #(
+  *) :
+    printf '%s\n' "#define HAVE_REALLOC 0" >>confdefs.h
 
-else case e in #(
-  e) printf "%s\n" "#define HAVE_REALLOC 0" >>confdefs.h
-
    case " $LIBOBJS " in
   *" realloc.$ac_objext "* ) ;;
   *) LIBOBJS="$LIBOBJS realloc.$ac_objext"
@@ -4310,58 +4490,57 @@ else case e in #(
 esac
 
 
-printf "%s\n" "#define realloc rpl_realloc" >>confdefs.h
+printf '%s\n' "#define realloc rpl_realloc" >>confdefs.h
  ;;
 esac
-fi
 
 
 ac_fn_c_check_func "$LINENO" "memset" "ac_cv_func_memset"
 if test "x$ac_cv_func_memset" = xyes
 then :
-  printf "%s\n" "#define HAVE_MEMSET 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_MEMSET 1" >>confdefs.h
 
 fi
 ac_fn_c_check_func "$LINENO" "regcomp" "ac_cv_func_regcomp"
 if test "x$ac_cv_func_regcomp" = xyes
 then :
-  printf "%s\n" "#define HAVE_REGCOMP 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_REGCOMP 1" >>confdefs.h
 
 fi
 ac_fn_c_check_func "$LINENO" "strchr" "ac_cv_func_strchr"
 if test "x$ac_cv_func_strchr" = xyes
 then :
-  printf "%s\n" "#define HAVE_STRCHR 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_STRCHR 1" >>confdefs.h
 
 fi
 ac_fn_c_check_func "$LINENO" "strerror" "ac_cv_func_strerror"
 if test "x$ac_cv_func_strerror" = xyes
 then :
-  printf "%s\n" "#define HAVE_STRERROR 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_STRERROR 1" >>confdefs.h
 
 fi
 ac_fn_c_check_func "$LINENO" "link_addr" "ac_cv_func_link_addr"
 if test "x$ac_cv_func_link_addr" = xyes
 then :
-  printf "%s\n" "#define HAVE_LINK_ADDR 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_LINK_ADDR 1" >>confdefs.h
 
 fi
 ac_fn_c_check_func "$LINENO" "strlcpy" "ac_cv_func_strlcpy"
 if test "x$ac_cv_func_strlcpy" = xyes
 then :
-  printf "%s\n" "#define HAVE_STRLCPY 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_STRLCPY 1" >>confdefs.h
 
 fi
 ac_fn_c_check_func "$LINENO" "strlcat" "ac_cv_func_strlcat"
 if test "x$ac_cv_func_strlcat" = xyes
 then :
-  printf "%s\n" "#define HAVE_STRLCAT 1" >>confdefs.h
+  printf '%s\n' "#define HAVE_STRLCAT 1" >>confdefs.h
 
 fi
 
 
 DEBUG=no
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking Debug Build" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking Debug Build" >&5
 printf %s "checking Debug Build... " >&6; }
 # Check whether --enable-debug was given.
 if test ${enable_debug+y}
@@ -4373,17 +4552,17 @@ then :
 				;;
 			*)
 
-printf "%s\n" "#define NDEBUG /**/" >>confdefs.h
+printf '%s\n' "#define NDEBUG /**/" >>confdefs.h
 
 				;;
 		esac
 fi
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $DEBUG" >&5
-printf "%s\n" "$DEBUG" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $DEBUG" >&5
+printf '%s\n' "$DEBUG" >&6; }
 
 MEMMGR="elwix"
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking Memory management" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking Memory management" >&5
 printf %s "checking Memory management... " >&6; }
 
 # Check whether --with-memmgr was given.
@@ -4393,28 +4572,28 @@ then :
 		sys|system)
 			MEMMGR="system"
 
-printf "%s\n" "#define MEMMGR ELWIX_SYSM" >>confdefs.h
+printf '%s\n' "#define MEMMGR ELWIX_SYSM" >>confdefs.h
 
 			;;
 		*)
 			MEMMGR="elwix"
 
-printf "%s\n" "#define MEMMGR ELWIX_MPOOL" >>confdefs.h
+printf '%s\n' "#define MEMMGR ELWIX_MPOOL" >>confdefs.h
 
 			;;
 	  esac
 else case e in #(
   e)
-printf "%s\n" "#define MEMMGR ELWIX_MPOOL" >>confdefs.h
+printf '%s\n' "#define MEMMGR ELWIX_MPOOL" >>confdefs.h
  ;;
 esac
 fi
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MEMMGR" >&5
-printf "%s\n" "$MEMMGR" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $MEMMGR" >&5
+printf '%s\n' "$MEMMGR" >&6; }
 
 MPOOL_MEM_ZERO=no
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking MPoll zeroing allocated memory" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking MPoll zeroing allocated memory" >&5
 printf %s "checking MPoll zeroing allocated memory... " >&6; }
 # Check whether --enable-mpool-mem-zero was given.
 if test ${enable_mpool_mem_zero+y}
@@ -4422,7 +4601,7 @@ then :
   enableval=$enable_mpool_mem_zero;  case "$enableval" in
 		 	yes)
 
-printf "%s\n" "#define MPOOL_MEM_ZERO /**/" >>confdefs.h
+printf '%s\n' "#define MPOOL_MEM_ZERO /**/" >>confdefs.h
 
 				MPOOL_MEM_ZERO=yes
 				;;
@@ -4432,11 +4611,11 @@ printf "%s\n" "#define MPOOL_MEM_ZERO /**/" >>confdefs
 		  esac
 fi
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MPOOL_MEM_ZERO" >&5
-printf "%s\n" "$MPOOL_MEM_ZERO" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $MPOOL_MEM_ZERO" >&5
+printf '%s\n' "$MPOOL_MEM_ZERO" >&6; }
 
 PATRICIA=no
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking Patricia support" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking Patricia support" >&5
 printf %s "checking Patricia support... " >&6; }
 # Check whether --enable-patricia was given.
 if test ${enable_patricia+y}
@@ -4444,7 +4623,7 @@ then :
   enableval=$enable_patricia;  case "$enableval" in
 		 	yes)
 
-printf "%s\n" "#define PATRICIA_SUPPORT /**/" >>confdefs.h
+printf '%s\n' "#define PATRICIA_SUPPORT /**/" >>confdefs.h
 
 				PATRICIA=yes
 				;;
@@ -4453,11 +4632,11 @@ printf "%s\n" "#define PATRICIA_SUPPORT /**/" >>confde
 		  esac
 fi
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PATRICIA" >&5
-printf "%s\n" "$PATRICIA" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $PATRICIA" >&5
+printf '%s\n' "$PATRICIA" >&6; }
 
 PELCO=no
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking Pelco support" >&5
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking Pelco support" >&5
 printf %s "checking Pelco support... " >&6; }
 # Check whether --enable-pelco was given.
 if test ${enable_pelco+y}
@@ -4465,7 +4644,7 @@ then :
   enableval=$enable_pelco;  case "$enableval" in
 		 	yes)
 
-printf "%s\n" "#define PELCO_SUPPORT /**/" >>confdefs.h
+printf '%s\n' "#define PELCO_SUPPORT /**/" >>confdefs.h
 
 				PELCO=yes
 				;;
@@ -4474,8 +4653,8 @@ printf "%s\n" "#define PELCO_SUPPORT /**/" >>confdefs.
 		  esac
 fi
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PELCO" >&5
-printf "%s\n" "$PELCO" >&6; }
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $PELCO" >&5
+printf '%s\n' "$PELCO" >&6; }
 
 DEBIAN_ARCH=$target_cpu
 if  test "x$target_cpu" = "xarm6l" -o "x$target_cpu" = "xarm7l"
@@ -4515,44 +4694,7 @@ cat >confcache <<\_ACEOF
 
 _ACEOF
 
-# The following way of writing the cache mishandles newlines in values,
-# but we know of no workaround that is simple, portable, and efficient.
-# So, we kill variables containing newlines.
-# Ultrix sh set writes to stderr and can't be redirected directly,
-# and sets the high bit in the cache file unless we assign to the vars.
-(
-  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
-    eval ac_val=\$$ac_var
-    case $ac_val in #(
-    *${as_nl}*)
-      case $ac_var in #(
-      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
-printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
-      esac
-      case $ac_var in #(
-      _ | IFS | as_nl) ;; #(
-      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
-      *) { eval $ac_var=; unset $ac_var;} ;;
-      esac ;;
-    esac
-  done
-
-  (set) 2>&1 |
-    case $as_nl`(ac_space=' '; set) 2>&1` in #(
-    *${as_nl}ac_space=\ *)
-      # 'set' does not quote correctly, so add quotes: double-quote
-      # substitution turns \\\\ into \\, and sed turns \\ into \.
-      sed -n \
-	"s/'/'\\\\''/g;
-	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
-      ;; #(
-    *)
-      # 'set' quotes correctly as required by POSIX, so do not add quotes.
-      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
-      ;;
-    esac |
-    sort
-) |
+ac_cache_dump |
   sed '
      /^ac_cv_env_/b end
      t clear
@@ -4564,8 +4706,8 @@ printf "%s\n" "$as_me: WARNING: cache variable $ac_var
 if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
   if test -w "$cache_file"; then
     if test "x$cache_file" != "x/dev/null"; then
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
-printf "%s\n" "$as_me: updating cache $cache_file" >&6;}
+      { printf '%s\n' "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+printf '%s\n' "$as_me: updating cache $cache_file" >&6;}
       if test ! -f "$cache_file" || test -h "$cache_file"; then
 	cat confcache >"$cache_file"
       else
@@ -4579,8 +4721,8 @@ printf "%s\n" "$as_me: updating cache $cache_file" >&6
       fi
     fi
   else
-    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
-printf "%s\n" "$as_me: not updating unwritable cache $cache_file" >&6;}
+    { printf '%s\n' "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+printf '%s\n' "$as_me: not updating unwritable cache $cache_file" >&6;}
   fi
 fi
 rm -f confcache
@@ -4597,7 +4739,7 @@ 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$//'
-  ac_i=`printf "%s\n" "$ac_i" | sed "$ac_script"`
+  ac_i=`printf '%s\n' "$ac_i" | sed "$ac_script"`
   # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
   #    will be set to the directory where LIBOBJS objects are built.
   as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
@@ -4610,13 +4752,21 @@ LTLIBOBJS=$ac_ltlibobjs
 
 
 : "${CONFIG_STATUS=./config.status}"
+case $CONFIG_STATUS in #(
+  -*) :
+    CONFIG_STATUS=./$CONFIG_STATUS ;; #(
+  */*) :
+     ;; #(
+  *) :
+    CONFIG_STATUS=./$CONFIG_STATUS ;;
+esac
+
 ac_write_fail=0
-ac_clean_files_save=$ac_clean_files
-ac_clean_files="$ac_clean_files $CONFIG_STATUS"
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
-printf "%s\n" "$as_me: creating $CONFIG_STATUS" >&6;}
+ac_clean_CONFIG_STATUS='"$CONFIG_STATUS"'
+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+printf '%s\n' "$as_me: creating $CONFIG_STATUS" >&6;}
 as_write_fail=0
-cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+cat >"$CONFIG_STATUS" <<_ASEOF || as_write_fail=1
 #! $SHELL
 # Generated by $as_me.
 # Run this file to recreate the current configuration.
@@ -4630,7 +4780,7 @@ ac_cs_silent=false
 SHELL=\${CONFIG_SHELL-$SHELL}
 export SHELL
 _ASEOF
-cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ASEOF || as_write_fail=1
 ## -------------------- ##
 ## M4sh Initialization. ##
 ## -------------------- ##
@@ -4642,7 +4792,7 @@ then :
   emulate sh
   NULLCMD=:
   # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
+  # contradicts POSIX and common usage.  Disable this.
   alias -g '${1+"$@"}'='"$@"'
   setopt NO_GLOB_SUBST
 else case e in #(
@@ -4729,7 +4879,7 @@ if test "x$as_myself" = x; then
   as_myself=$0
 fi
 if test ! -f "$as_myself"; then
-  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  printf '%s\n' "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
   exit 1
 fi
 
@@ -4745,9 +4895,9 @@ as_fn_error ()
   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
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+    printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
   fi
-  printf "%s\n" "$as_me: error: $2" >&2
+  printf '%s\n' "$as_me: error: $2" >&2
   as_fn_exit $as_status
 } # as_fn_error
 
@@ -4842,7 +4992,7 @@ as_me=`$as_basename -- "$0" ||
 $as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
 	 X"$0" : 'X\(//\)$' \| \
 	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-printf "%s\n" X/"$0" |
+printf '%s\n' X/"$0" |
     sed '/^.*\/\([^/][^/]*\)\/*$/{
 	    s//\1/
 	    q
@@ -4864,29 +5014,6 @@ as_cr_Letters=$as_cr_letters$as_cr_LETTERS
 as_cr_digits='0123456789'
 as_cr_alnum=$as_cr_Letters$as_cr_digits
 
-
-# Determine whether it's possible to make 'echo' print without a newline.
-# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
-# for compatibility with existing Makefiles.
-ECHO_C= ECHO_N= ECHO_T=
-case `echo -n x` in #(((((
--n*)
-  case `echo 'xy\c'` in
-  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
-  xy)  ECHO_C='\c';;
-  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
-       ECHO_T='	';;
-  esac;;
-*)
-  ECHO_N='-n';;
-esac
-
-# For backward compatibility with old third-party macros, we provide
-# the shell variables $as_echo and $as_echo_n.  New code should use
-# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
-as_echo='printf %s\n'
-as_echo_n='printf %s'
-
 rm -f conf$$ conf$$.exe conf$$.file
 if test -d conf$$.dir; then
   rm -f conf$$.dir/conf$$.file
@@ -4928,7 +5055,7 @@ as_fn_mkdir_p ()
     as_dirs=
     while :; do
       case $as_dir in #(
-      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *\'*) as_qdir=`printf '%s\n' "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
       *) as_qdir=$as_dir;;
       esac
       as_dirs="'$as_qdir' $as_dirs"
@@ -4937,7 +5064,7 @@ $as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| 
 	 X"$as_dir" : 'X\(//\)[^/]' \| \
 	 X"$as_dir" : 'X\(//\)$' \| \
 	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
-printf "%s\n" X"$as_dir" |
+printf '%s\n' X"$as_dir" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -4990,19 +5117,19 @@ as_tr_sh="eval sed '$as_sed_sh'" # deprecated
 
 
 exec 6>&1
-## ----------------------------------- ##
-## Main body of $CONFIG_STATUS script. ##
-## ----------------------------------- ##
+## ------------------------------------- ##
+## Main body of "$CONFIG_STATUS" script. ##
+## ------------------------------------- ##
 _ASEOF
-test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+test $as_write_fail = 0 && chmod +x "$CONFIG_STATUS" || ac_write_fail=1
 
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 # Save the log message, to keep $0 and so on meaningful, and to
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libelwix $as_me 6.15, which was
-generated by GNU Autoconf 2.72.  Invocation command line was
+This file was extended by libelwix $as_me 7.1, which was
+generated by GNU Autoconf 2.73.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -5024,14 +5151,14 @@ case $ac_config_headers in *"
 esac
 
 
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
 # Files that config.status was made for.
 config_files="$ac_config_files"
 config_headers="$ac_config_headers"
 
 _ACEOF
 
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 ac_cs_usage="\
 '$as_me' instantiates files and other configuration actions
 from templates according to the current configuration.  Unless the files
@@ -5060,26 +5187,30 @@ $config_headers
 Report bugs to <misho@elwix.org>."
 
 _ACEOF
-ac_cs_config=`printf "%s\n" "$ac_configure_args" | sed "$ac_safe_unquote"`
-ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\''/g"`
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config=`printf '%s\n' "$ac_configure_args" | sed "$ac_safe_unquote"`
+ac_cs_config_escaped=`printf '%s\n' "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\''/g"`
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-libelwix config.status 6.15
-configured by $0, generated by GNU Autoconf 2.72,
+libelwix config.status 7.1
+configured by $0, generated by GNU Autoconf 2.73,
   with options \\"\$ac_cs_config\\"
 
-Copyright (C) 2023 Free Software Foundation, Inc.
+Copyright (C) 2026 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."
 
 ac_pwd='$ac_pwd'
 srcdir='$srcdir'
 INSTALL='$INSTALL'
-test -n "\$AWK" || AWK=awk
+test -n "\$AWK" || {
+  awk '' </dev/null ||
+    as_fn_error \$? "try installing gawk"
+  AWK=awk
+}
 _ACEOF
 
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 # The default lists apply if the user does not specify any file.
 ac_need_defaults=:
 while test $# != 0
@@ -5107,15 +5238,15 @@ do
   -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
     ac_cs_recheck=: ;;
   --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
-    printf "%s\n" "$ac_cs_version"; exit ;;
+    printf '%s\n' "$ac_cs_version"; exit ;;
   --config | --confi | --conf | --con | --co | --c )
-    printf "%s\n" "$ac_cs_config"; exit ;;
+    printf '%s\n' "$ac_cs_config"; exit ;;
   --debug | --debu | --deb | --de | --d | -d )
     debug=: ;;
   --file | --fil | --fi | --f )
     $ac_shift
     case $ac_optarg in
-    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *\'*) ac_optarg=`printf '%s\n' "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
     '') as_fn_error $? "missing file argument" ;;
     esac
     as_fn_append CONFIG_FILES " '$ac_optarg'"
@@ -5123,7 +5254,7 @@ do
   --header | --heade | --head | --hea )
     $ac_shift
     case $ac_optarg in
-    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *\'*) ac_optarg=`printf '%s\n' "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
     esac
     as_fn_append CONFIG_HEADERS " '$ac_optarg'"
     ac_need_defaults=false;;
@@ -5132,7 +5263,7 @@ do
     as_fn_error $? "ambiguous option: '$1'
 Try '$0 --help' for more information.";;
   --help | --hel | -h )
-    printf "%s\n" "$ac_cs_usage"; exit ;;
+    printf '%s\n' "$ac_cs_usage"; exit ;;
   -q | -quiet | --quiet | --quie | --qui | --qu | --q \
   | -silent | --silent | --silen | --sile | --sil | --si | --s)
     ac_cs_silent=: ;;
@@ -5156,32 +5287,32 @@ if $ac_cs_silent; then
 fi
 
 _ACEOF
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
 if \$ac_cs_recheck; then
   set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
   shift
-  \printf "%s\n" "running CONFIG_SHELL=$SHELL \$*" >&6
+  \printf '%s\n' "running CONFIG_SHELL=$SHELL \$*" >&6
   CONFIG_SHELL='$SHELL'
   export CONFIG_SHELL
   exec "\$@"
 fi
 
 _ACEOF
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 exec 5>>config.log
 {
   echo
   sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
 ## Running $as_me. ##
 _ASBOX
-  printf "%s\n" "$ac_log"
+  printf '%s\n' "$ac_log"
 } >&5
 
 _ACEOF
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
 _ACEOF
 
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 
 # Handling of arguments.
 for ac_config_target in $ac_config_targets
@@ -5266,13 +5397,13 @@ _ACEOF
   echo "_ACEOF"
 } >conf$$subs.sh ||
   as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
-ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim_num=`echo "$ac_subst_vars" | sed -n '$='`
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   . ./conf$$subs.sh ||
     as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
 
-  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | sed -n '$='`
   if test $ac_delim_n = $ac_delim_num; then
     break
   elif $ac_last_try; then
@@ -5283,7 +5414,7 @@ for ac_last_try in false false false false false :; do
 done
 rm -f conf$$subs.sh
 
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
 cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
 _ACEOF
 sed -n '
@@ -5328,9 +5459,9 @@ t delim
   N
   s/\n//
 }
-' >>$CONFIG_STATUS || ac_write_fail=1
+' >>"$CONFIG_STATUS" || ac_write_fail=1
 rm -f conf$$subs.awk
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
 _ACAWK
 cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
   for (key in S) S_is_set[key] = 1
@@ -5359,7 +5490,7 @@ cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
 
 _ACAWK
 _ACEOF
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 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
@@ -5391,7 +5522,7 @@ s/^[^=]*=[	 ]*$//
 }'
 fi
 
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 fi # test -n "$CONFIG_FILES"
 
 # Set up the scripts for CONFIG_HEADERS section.
@@ -5462,9 +5593,9 @@ s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
 b cont
 ' <confdefs.h | sed '
 s/'"$ac_delim"'/"\\\
-"/g' >>$CONFIG_STATUS || ac_write_fail=1
+"/g' >>"$CONFIG_STATUS" || ac_write_fail=1
 
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
   for (key in D) D_is_set[key] = 1
   FS = ""
 }
@@ -5482,8 +5613,12 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
   macro = mac2[1]
   prefix = substr(line, 1, index(line, defundef) - 1)
   if (D_is_set[macro]) {
+    suffix = P[macro] D[macro]
+    while (suffix ~ /[\t ]$/) {
+      suffix = substr(suffix, 1, length(suffix) - 1)
+    }
     # Preserve the white space surrounding the "#".
-    print prefix "define", macro P[macro] D[macro]
+    print prefix "define", macro suffix
     next
   } else {
     # Replace #undef with comments.  This is necessary, for example,
@@ -5498,7 +5633,7 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 { print }
 _ACAWK
 _ACEOF
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
   as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
 fi # test -n "$CONFIG_HEADERS"
 
@@ -5542,7 +5677,7 @@ do
 	   esac ||
 	   as_fn_error 1 "cannot find input file: '$ac_f'" "$LINENO" 5;;
       esac
-      case $ac_f in *\'*) ac_f=`printf "%s\n" "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      case $ac_f in *\'*) ac_f=`printf '%s\n' "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
       as_fn_append ac_file_inputs " '$ac_f'"
     done
 
@@ -5550,17 +5685,17 @@ do
     # use $as_me), people would be surprised to read:
     #    /* config.h.  Generated by config.status.  */
     configure_input='Generated from '`
-	  printf "%s\n" "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	  printf '%s\n' "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
 	`' by configure.'
     if test x"$ac_file" != x-; then
       configure_input="$ac_file.  $configure_input"
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
-printf "%s\n" "$as_me: creating $ac_file" >&6;}
+      { printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+printf '%s\n' "$as_me: creating $ac_file" >&6;}
     fi
     # Neutralize special characters interpreted by sed in replacement strings.
     case $configure_input in #(
     *\&* | *\|* | *\\* )
-       ac_sed_conf_input=`printf "%s\n" "$configure_input" |
+       ac_sed_conf_input=`printf '%s\n' "$configure_input" |
        sed 's/[\\\\&|]/\\\\&/g'`;; #(
     *) ac_sed_conf_input=$configure_input;;
     esac
@@ -5577,7 +5712,7 @@ $as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \|
 	 X"$ac_file" : 'X\(//\)[^/]' \| \
 	 X"$ac_file" : 'X\(//\)$' \| \
 	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
-printf "%s\n" X"$ac_file" |
+printf '%s\n' X"$ac_file" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -5601,9 +5736,9 @@ printf "%s\n" X"$ac_file" |
 case "$ac_dir" in
 .) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
 *)
-  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
+  ac_dir_suffix=/`printf '%s\n' "$ac_dir" | sed 's|^\.[\\/]||'`
   # A ".." for each directory in $ac_dir_suffix.
-  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  ac_top_builddir_sub=`printf '%s\n' "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
   case $ac_top_builddir_sub in
   "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
   *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
@@ -5643,7 +5778,7 @@ ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
   esac
 _ACEOF
 
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 # If the template does not know about datarootdir, expand it.
 # FIXME: This hack should be removed a few years after 2.60.
 ac_datarootdir_hack=; ac_datarootdir_seen=
@@ -5660,10 +5795,10 @@ ac_sed_dataroot='
 case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
 *datarootdir*) ac_datarootdir_seen=yes;;
 *@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
-printf "%s\n" "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+printf '%s\n' "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
 _ACEOF
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
   ac_datarootdir_hack='
   s&@datadir@&$datadir&g
   s&@docdir@&$docdir&g
@@ -5677,11 +5812,11 @@ _ACEOF
 # Neutralize VPATH when '$srcdir' = '.'.
 # Shell code in configure.ac might set extrasub.
 # FIXME: do we really want to maintain this feature?
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1
 ac_sed_extra="$ac_vpsub
 $extrasub
 _ACEOF
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1
 :t
 /@[a-zA-Z_][a-zA-Z_0-9]*@/!b
 s|@configure_input@|$ac_sed_conf_input|;t t
@@ -5704,9 +5839,9 @@ test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
   { 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"; } &&
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable 'datarootdir'
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable 'datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&5
-printf "%s\n" "$as_me: WARNING: $ac_file contains a reference to the variable 'datarootdir'
+printf '%s\n' "$as_me: WARNING: $ac_file contains a reference to the variable 'datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&2;}
 
   rm -f "$ac_tmp/stdin"
@@ -5722,20 +5857,20 @@ which seems to be undefined.  Please make sure it is d
   #
   if test x"$ac_file" != x-; then
     {
-      printf "%s\n" "/* $configure_input  */" >&1 \
+      printf '%s\n' "/* $configure_input  */" >&1 \
       && eval '$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
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
-printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}
+      { printf '%s\n' "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+printf '%s\n' "$as_me: $ac_file is unchanged" >&6;}
     else
       rm -f "$ac_file"
       mv "$ac_tmp/config.h" "$ac_file" \
 	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
     fi
   else
-    printf "%s\n" "/* $configure_input  */" >&1 \
+    printf '%s\n' "/* $configure_input  */" >&1 \
       && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
       || as_fn_error $? "could not create -" "$LINENO" 5
   fi
@@ -5749,7 +5884,7 @@ done # for ac_tag
 
 as_fn_exit 0
 _ACEOF
-ac_clean_files=$ac_clean_files_save
+ac_clean_CONFIG_STATUS=
 
 test $ac_write_fail = 0 ||
   as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
@@ -5765,19 +5900,26 @@ test $ac_write_fail = 0 ||
 # need to make the FD available again.
 if test "$no_create" != yes; then
   ac_cs_success=:
+  case $CONFIG_STATUS in #(
+  -*) :
+    ac_no_opts=-- ;; #(
+  *) :
+    ac_no_opts= ;;
+esac
   ac_config_status_args=
   test "$silent" = yes &&
     ac_config_status_args="$ac_config_status_args --quiet"
   exec 5>/dev/null
-  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  $SHELL $ac_no_opts "$CONFIG_STATUS" $ac_config_status_args ||
+    ac_cs_success=false
   exec 5>>config.log
   # Use ||, not &&, to avoid exiting from the if with $? = 1, which
   # would make configure fail if this is the last instruction.
   $ac_cs_success || as_fn_exit 1
 fi
 if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
-printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+  { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+printf '%s\n' "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi