From eece9692d707ccb20356ec06955f8308c4e59ca7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <debian@jff-webhosting.net>
Date: Sun, 17 Dec 2023 14:18:48 +0100
Subject: New upstream version 4.19

---
 Makefile.in            |   1 +
 build-aux/ltmain.sh    | 855 +++++++++++++++++++++++++++++++++----------------
 configure              | 380 +++++++++++++++-------
 configure.ac           |   2 +-
 doc/api.rst            |   5 +-
 doc/changelog.rst      |  28 ++
 doc/generator.cpp      |   2 +-
 doc/inline_list.rst    |   4 +-
 doc/option_parsing.rst | 167 +++++-----
 doc/string_ops.rst     |   2 +-
 include/Makefile.am    |   2 +-
 include/Makefile.in    |   3 +-
 include/libHX/cast.h   | 129 ++++++++
 include/libHX/defs.h   | 115 +------
 include/libHX/misc.h   |   3 +
 include/libHX/option.h |  10 +-
 m4/libtool.m4          | 227 +++++++------
 m4/ltoptions.m4        |   4 +-
 m4/ltsugar.m4          |   2 +-
 m4/ltversion.m4        |  13 +-
 m4/lt~obsolete.m4      |   4 +-
 src/Makefile.am        |  17 +-
 src/Makefile.in        | 126 ++++----
 src/analyze.sh         |   3 +
 src/internal.h         |   5 +-
 src/libHX.map          |   5 +
 src/opt.c              |  64 ++--
 src/proc.c             |   2 +-
 src/rtcheck.c          | 274 ----------------
 src/socket.c           |  12 +-
 src/string.c           |  68 +++-
 src/tc-dir.c           |   2 +-
 src/tc-format.c        |   2 +-
 src/tc-list.c          |  18 +-
 src/tc-memmem.c        |   2 +-
 src/tc-misc.c          |   6 +-
 src/tc-option.c        |  68 ++--
 src/tc-realpath.c      |  15 +-
 src/tc-shconfig.c      |   4 +-
 src/tc-string.c        | 173 ++++------
 src/tc-switchuser.c    |   8 +-
 src/tx-option.cpp      |   6 +-
 src/uxcompat.h         | 104 ++++++
 43 files changed, 1665 insertions(+), 1277 deletions(-)
 create mode 100644 include/libHX/cast.h
 create mode 100755 src/analyze.sh
 delete mode 100644 src/rtcheck.c
 create mode 100644 src/uxcompat.h

diff --git a/Makefile.in b/Makefile.in
index b3403df..e7860e2 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -275,6 +275,7 @@ EGREP = @EGREP@
 ETAGS = @ETAGS@
 EXEEXT = @EXEEXT@
 FGREP = @FGREP@
+FILECMD = @FILECMD@
 GREP = @GREP@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
diff --git a/build-aux/ltmain.sh b/build-aux/ltmain.sh
index 0f0a2da..2a50d7f 100755
--- a/build-aux/ltmain.sh
+++ b/build-aux/ltmain.sh
@@ -1,12 +1,12 @@
-#! /bin/sh
+#! /usr/bin/env sh
 ## DO NOT EDIT - This file generated from ./build-aux/ltmain.in
-##               by inline-source v2014-01-03.01
+##               by inline-source v2019-02-19.15
 
-# libtool (GNU libtool) 2.4.6
+# libtool (GNU libtool) 2.4.7
 # Provide generalized library-building support services.
 # Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
 
-# Copyright (C) 1996-2015 Free Software Foundation, Inc.
+# Copyright (C) 1996-2019, 2021-2022 Free Software Foundation, Inc.
 # This is free software; see the source for copying conditions.  There is NO
 # warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
@@ -31,8 +31,8 @@
 
 PROGRAM=libtool
 PACKAGE=libtool
-VERSION=2.4.6
-package_revision=2.4.6
+VERSION=2.4.7
+package_revision=2.4.7
 
 
 ## ------ ##
@@ -64,34 +64,25 @@ package_revision=2.4.6
 # libraries, which are installed to $pkgauxdir.
 
 # Set a version string for this script.
-scriptversion=2015-01-20.17; # UTC
+scriptversion=2019-02-19.15; # UTC
 
 # General shell script boiler plate, and helper functions.
 # Written by Gary V. Vaughan, 2004
 
-# Copyright (C) 2004-2015 Free Software Foundation, Inc.
-# This is free software; see the source for copying conditions.  There is NO
-# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
-# (at your option) any later version.
-
-# As a special exception to the GNU General Public License, if you distribute
-# this file as part of a program or library that is built using GNU Libtool,
-# you may include this file under the same distribution terms that you use
-# for the rest of that program.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNES FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
+# This is free software.  There is NO warranty; not even for
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+# Copyright (C) 2004-2019, 2021 Bootstrap Authors
+#
+# This file is dual licensed under the terms of the MIT license
+# <https://opensource.org/license/MIT>, and GPL version 2 or later
+# <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
+# these licenses when using or redistributing this software or any of
+# the files within it.  See the URLs above, or the file `LICENSE`
+# included in the Bootstrap distribution for the full license texts.
 
-# Please report bugs or propose patches to gary@gnu.org.
+# Please report bugs or propose patches to:
+# <https://github.com/gnulib-modules/bootstrap/issues>
 
 
 ## ------ ##
@@ -139,9 +130,12 @@ do
 	  _G_safe_locale=\"$_G_var=C; \$_G_safe_locale\"
 	fi"
 done
-
-# CDPATH.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+# These NLS vars are set unconditionally (bootstrap issue #24).  Unset those
+# in case the environment reset is needed later and the $save_* variant is not
+# defined (see the code above).
+LC_ALL=C
+LANGUAGE=C
+export LANGUAGE LC_ALL
 
 # Make sure IFS has a sensible default
 sp=' '
@@ -159,6 +153,26 @@ if test "${PATH_SEPARATOR+set}" != set; then
 fi
 
 
+# func_unset VAR
+# --------------
+# Portably unset VAR.
+# In some shells, an 'unset VAR' statement leaves a non-zero return
+# status if VAR is already unset, which might be problematic if the
+# statement is used at the end of a function (thus poisoning its return
+# value) or when 'set -e' is active (causing even a spurious abort of
+# the script in this case).
+func_unset ()
+{
+    { eval $1=; (eval unset $1) >/dev/null 2>&1 && eval unset $1 || : ; }
+}
+
+
+# Make sure CDPATH doesn't cause `cd` commands to output the target dir.
+func_unset CDPATH
+
+# Make sure ${,E,F}GREP behave sanely.
+func_unset GREP_OPTIONS
+
 
 ## ------------------------- ##
 ## Locate command utilities. ##
@@ -259,7 +273,7 @@ test -z "$SED" && {
     rm -f conftest.in conftest.tmp conftest.nl conftest.out
   }
 
-  func_path_progs "sed gsed" func_check_prog_sed $PATH:/usr/xpg4/bin
+  func_path_progs "sed gsed" func_check_prog_sed "$PATH:/usr/xpg4/bin"
   rm -f conftest.sed
   SED=$func_path_progs_result
 }
@@ -295,7 +309,7 @@ test -z "$GREP" && {
     rm -f conftest.in conftest.tmp conftest.nl conftest.out
   }
 
-  func_path_progs "grep ggrep" func_check_prog_grep $PATH:/usr/xpg4/bin
+  func_path_progs "grep ggrep" func_check_prog_grep "$PATH:/usr/xpg4/bin"
   GREP=$func_path_progs_result
 }
 
@@ -360,6 +374,35 @@ sed_double_backslash="\
   s/\\([^$_G_bs]\\)$_G_bs2$_G_dollar/\\1$_G_bs2$_G_bs$_G_dollar/g
   s/\n//g"
 
+# require_check_ifs_backslash
+# ---------------------------
+# Check if we can use backslash as IFS='\' separator, and set
+# $check_ifs_backshlash_broken to ':' or 'false'.
+require_check_ifs_backslash=func_require_check_ifs_backslash
+func_require_check_ifs_backslash ()
+{
+  _G_save_IFS=$IFS
+  IFS='\'
+  _G_check_ifs_backshlash='a\\b'
+  for _G_i in $_G_check_ifs_backshlash
+  do
+  case $_G_i in
+  a)
+    check_ifs_backshlash_broken=false
+    ;;
+  '')
+    break
+    ;;
+  *)
+    check_ifs_backshlash_broken=:
+    break
+    ;;
+  esac
+  done
+  IFS=$_G_save_IFS
+  require_check_ifs_backslash=:
+}
+
 
 ## ----------------- ##
 ## Global variables. ##
@@ -580,16 +623,16 @@ if test yes = "$_G_HAVE_PLUSEQ_OP"; then
   {
     $debug_cmd
 
-    func_quote_for_eval "$2"
-    eval "$1+=\\ \$func_quote_for_eval_result"
+    func_quote_arg pretty "$2"
+    eval "$1+=\\ \$func_quote_arg_result"
   }'
 else
   func_append_quoted ()
   {
     $debug_cmd
 
-    func_quote_for_eval "$2"
-    eval "$1=\$$1\\ \$func_quote_for_eval_result"
+    func_quote_arg pretty "$2"
+    eval "$1=\$$1\\ \$func_quote_arg_result"
   }
 fi
 
@@ -1091,85 +1134,203 @@ func_relative_path ()
 }
 
 
-# func_quote_for_eval ARG...
-# --------------------------
-# Aesthetically quote ARGs to be evaled later.
-# This function returns two values:
-#   i) func_quote_for_eval_result
-#      double-quoted, suitable for a subsequent eval
-#  ii) func_quote_for_eval_unquoted_result
-#      has all characters that are still active within double
-#      quotes backslashified.
-func_quote_for_eval ()
+# func_quote_portable EVAL ARG
+# ----------------------------
+# Internal function to portably implement func_quote_arg.  Note that we still
+# keep attention to performance here so we as much as possible try to avoid
+# calling sed binary (so far O(N) complexity as long as func_append is O(1)).
+func_quote_portable ()
 {
     $debug_cmd
 
-    func_quote_for_eval_unquoted_result=
-    func_quote_for_eval_result=
-    while test 0 -lt $#; do
-      case $1 in
-        *[\\\`\"\$]*)
-	  _G_unquoted_arg=`printf '%s\n' "$1" |$SED "$sed_quote_subst"` ;;
-        *)
-          _G_unquoted_arg=$1 ;;
-      esac
-      if test -n "$func_quote_for_eval_unquoted_result"; then
-	func_append func_quote_for_eval_unquoted_result " $_G_unquoted_arg"
-      else
-        func_append func_quote_for_eval_unquoted_result "$_G_unquoted_arg"
+    $require_check_ifs_backslash
+
+    func_quote_portable_result=$2
+
+    # one-time-loop (easy break)
+    while true
+    do
+      if $1; then
+        func_quote_portable_result=`$ECHO "$2" | $SED \
+          -e "$sed_double_quote_subst" -e "$sed_double_backslash"`
+        break
       fi
 
-      case $_G_unquoted_arg in
-        # Double-quote args containing shell metacharacters to delay
-        # word splitting, command substitution and variable expansion
-        # for a subsequent eval.
-        # Many Bourne shells cannot handle close brackets correctly
-        # in scan sets, so we specify it separately.
-        *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
-          _G_quoted_arg=\"$_G_unquoted_arg\"
+      # Quote for eval.
+      case $func_quote_portable_result in
+        *[\\\`\"\$]*)
+          # Fallback to sed for $func_check_bs_ifs_broken=:, or when the string
+          # contains the shell wildcard characters.
+          case $check_ifs_backshlash_broken$func_quote_portable_result in
+            :*|*[\[\*\?]*)
+              func_quote_portable_result=`$ECHO "$func_quote_portable_result" \
+                  | $SED "$sed_quote_subst"`
+              break
+              ;;
+          esac
+
+          func_quote_portable_old_IFS=$IFS
+          for _G_char in '\' '`' '"' '$'
+          do
+            # STATE($1) PREV($2) SEPARATOR($3)
+            set start "" ""
+            func_quote_portable_result=dummy"$_G_char$func_quote_portable_result$_G_char"dummy
+            IFS=$_G_char
+            for _G_part in $func_quote_portable_result
+            do
+              case $1 in
+              quote)
+                func_append func_quote_portable_result "$3$2"
+                set quote "$_G_part" "\\$_G_char"
+                ;;
+              start)
+                set first "" ""
+                func_quote_portable_result=
+                ;;
+              first)
+                set quote "$_G_part" ""
+                ;;
+              esac
+            done
+          done
+          IFS=$func_quote_portable_old_IFS
           ;;
-        *)
-          _G_quoted_arg=$_G_unquoted_arg
-	  ;;
+        *) ;;
       esac
-
-      if test -n "$func_quote_for_eval_result"; then
-	func_append func_quote_for_eval_result " $_G_quoted_arg"
-      else
-        func_append func_quote_for_eval_result "$_G_quoted_arg"
-      fi
-      shift
+      break
     done
+
+    func_quote_portable_unquoted_result=$func_quote_portable_result
+    case $func_quote_portable_result in
+      # double-quote args containing shell metacharacters to delay
+      # word splitting, command substitution and variable expansion
+      # for a subsequent eval.
+      # many bourne shells cannot handle close brackets correctly
+      # in scan sets, so we specify it separately.
+      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
+        func_quote_portable_result=\"$func_quote_portable_result\"
+        ;;
+    esac
 }
 
 
-# func_quote_for_expand ARG
-# -------------------------
-# Aesthetically quote ARG to be evaled later; same as above,
-# but do not quote variable references.
-func_quote_for_expand ()
-{
-    $debug_cmd
+# func_quotefast_eval ARG
+# -----------------------
+# Quote one ARG (internal).  This is equivalent to 'func_quote_arg eval ARG',
+# but optimized for speed.  Result is stored in $func_quotefast_eval.
+if test xyes = `(x=; printf -v x %q yes; echo x"$x") 2>/dev/null`; then
+  printf -v _GL_test_printf_tilde %q '~'
+  if test '\~' = "$_GL_test_printf_tilde"; then
+    func_quotefast_eval ()
+    {
+      printf -v func_quotefast_eval_result %q "$1"
+    }
+  else
+    # Broken older Bash implementations.  Make those faster too if possible.
+    func_quotefast_eval ()
+    {
+      case $1 in
+        '~'*)
+          func_quote_portable false "$1"
+          func_quotefast_eval_result=$func_quote_portable_result
+          ;;
+        *)
+          printf -v func_quotefast_eval_result %q "$1"
+          ;;
+      esac
+    }
+  fi
+else
+  func_quotefast_eval ()
+  {
+    func_quote_portable false "$1"
+    func_quotefast_eval_result=$func_quote_portable_result
+  }
+fi
 
-    case $1 in
-      *[\\\`\"]*)
-	_G_arg=`$ECHO "$1" | $SED \
-	    -e "$sed_double_quote_subst" -e "$sed_double_backslash"` ;;
-      *)
-        _G_arg=$1 ;;
+
+# func_quote_arg MODEs ARG
+# ------------------------
+# Quote one ARG to be evaled later.  MODEs argument may contain zero or more
+# specifiers listed below separated by ',' character.  This function returns two
+# values:
+#   i) func_quote_arg_result
+#      double-quoted (when needed), suitable for a subsequent eval
+#  ii) func_quote_arg_unquoted_result
+#      has all characters that are still active within double
+#      quotes backslashified.  Available only if 'unquoted' is specified.
+#
+# Available modes:
+# ----------------
+# 'eval' (default)
+#       - escape shell special characters
+# 'expand'
+#       - the same as 'eval';  but do not quote variable references
+# 'pretty'
+#       - request aesthetic output, i.e. '"a b"' instead of 'a\ b'.  This might
+#         be used later in func_quote to get output like: 'echo "a b"' instead
+#         of 'echo a\ b'.  This is slower than default on some shells.
+# 'unquoted'
+#       - produce also $func_quote_arg_unquoted_result which does not contain
+#         wrapping double-quotes.
+#
+# Examples for 'func_quote_arg pretty,unquoted string':
+#
+#   string      | *_result              | *_unquoted_result
+#   ------------+-----------------------+-------------------
+#   "           | \"                    | \"
+#   a b         | "a b"                 | a b
+#   "a b"       | "\"a b\""             | \"a b\"
+#   *           | "*"                   | *
+#   z="${x-$y}" | "z=\"\${x-\$y}\""     | z=\"\${x-\$y}\"
+#
+# Examples for 'func_quote_arg pretty,unquoted,expand string':
+#
+#   string        |   *_result          |  *_unquoted_result
+#   --------------+---------------------+--------------------
+#   z="${x-$y}"   | "z=\"${x-$y}\""     | z=\"${x-$y}\"
+func_quote_arg ()
+{
+    _G_quote_expand=false
+    case ,$1, in
+      *,expand,*)
+        _G_quote_expand=:
+        ;;
     esac
 
-    case $_G_arg in
-      # Double-quote args containing shell metacharacters to delay
-      # word splitting and command substitution for a subsequent eval.
-      # Many Bourne shells cannot handle close brackets correctly
-      # in scan sets, so we specify it separately.
-      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
-        _G_arg=\"$_G_arg\"
+    case ,$1, in
+      *,pretty,*|*,expand,*|*,unquoted,*)
+        func_quote_portable $_G_quote_expand "$2"
+        func_quote_arg_result=$func_quote_portable_result
+        func_quote_arg_unquoted_result=$func_quote_portable_unquoted_result
+        ;;
+      *)
+        # Faster quote-for-eval for some shells.
+        func_quotefast_eval "$2"
+        func_quote_arg_result=$func_quotefast_eval_result
         ;;
     esac
+}
+
 
-    func_quote_for_expand_result=$_G_arg
+# func_quote MODEs ARGs...
+# ------------------------
+# Quote all ARGs to be evaled later and join them into single command.  See
+# func_quote_arg's description for more info.
+func_quote ()
+{
+    $debug_cmd
+    _G_func_quote_mode=$1 ; shift
+    func_quote_result=
+    while test 0 -lt $#; do
+      func_quote_arg "$_G_func_quote_mode" "$1"
+      if test -n "$func_quote_result"; then
+        func_append func_quote_result " $func_quote_arg_result"
+      else
+        func_append func_quote_result "$func_quote_arg_result"
+      fi
+      shift
+    done
 }
 
 
@@ -1215,8 +1376,8 @@ func_show_eval ()
     _G_cmd=$1
     _G_fail_exp=${2-':'}
 
-    func_quote_for_expand "$_G_cmd"
-    eval "func_notquiet $func_quote_for_expand_result"
+    func_quote_arg pretty,expand "$_G_cmd"
+    eval "func_notquiet $func_quote_arg_result"
 
     $opt_dry_run || {
       eval "$_G_cmd"
@@ -1241,8 +1402,8 @@ func_show_eval_locale ()
     _G_fail_exp=${2-':'}
 
     $opt_quiet || {
-      func_quote_for_expand "$_G_cmd"
-      eval "func_echo $func_quote_for_expand_result"
+      func_quote_arg expand,pretty "$_G_cmd"
+      eval "func_echo $func_quote_arg_result"
     }
 
     $opt_dry_run || {
@@ -1369,30 +1530,26 @@ func_lt_ver ()
 # End:
 #! /bin/sh
 
-# Set a version string for this script.
-scriptversion=2014-01-07.03; # UTC
-
 # A portable, pluggable option parser for Bourne shell.
 # Written by Gary V. Vaughan, 2010
 
-# Copyright (C) 2010-2015 Free Software Foundation, Inc.
-# This is free software; see the source for copying conditions.  There is NO
-# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# This is free software.  There is NO warranty; not even for
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+# Copyright (C) 2010-2019, 2021 Bootstrap Authors
+#
+# This file is dual licensed under the terms of the MIT license
+# <https://opensource.org/license/MIT>, and GPL version 2 or later
+# <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
+# these licenses when using or redistributing this software or any of
+# the files within it.  See the URLs above, or the file `LICENSE`
+# included in the Bootstrap distribution for the full license texts.
 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# Please report bugs or propose patches to:
+# <https://github.com/gnulib-modules/bootstrap/issues>
 
-# Please report bugs or propose patches to gary@gnu.org.
+# Set a version string for this script.
+scriptversion=2019-02-19.15; # UTC
 
 
 ## ------ ##
@@ -1415,7 +1572,7 @@ scriptversion=2014-01-07.03; # UTC
 #
 # In order for the '--version' option to work, you will need to have a
 # suitably formatted comment like the one at the top of this file
-# starting with '# Written by ' and ending with '# warranty; '.
+# starting with '# Written by ' and ending with '# Copyright'.
 #
 # For '-h' and '--help' to work, you will also need a one line
 # description of your script's purpose in a comment directly above the
@@ -1427,7 +1584,7 @@ scriptversion=2014-01-07.03; # UTC
 # to display verbose messages only when your user has specified
 # '--verbose'.
 #
-# After sourcing this file, you can plug processing for additional
+# After sourcing this file, you can plug in processing for additional
 # options by amending the variables from the 'Configuration' section
 # below, and following the instructions in the 'Option parsing'
 # section further down.
@@ -1476,8 +1633,8 @@ fatal_help="Try '\$progname --help' for more information."
 ## ------------------------- ##
 
 # This section contains functions for adding, removing, and running hooks
-# to the main code.  A hook is just a named list of of function, that can
-# be run in order later on.
+# in the main code.  A hook is just a list of function names that can be
+# run in order later on.
 
 # func_hookable FUNC_NAME
 # -----------------------
@@ -1510,7 +1667,8 @@ func_add_hook ()
 
 # func_remove_hook FUNC_NAME HOOK_FUNC
 # ------------------------------------
-# Remove HOOK_FUNC from the list of functions called by FUNC_NAME.
+# Remove HOOK_FUNC from the list of hook functions to be called by
+# FUNC_NAME.
 func_remove_hook ()
 {
     $debug_cmd
@@ -1519,10 +1677,28 @@ func_remove_hook ()
 }
 
 
+# func_propagate_result FUNC_NAME_A FUNC_NAME_B
+# ---------------------------------------------
+# If the *_result variable of FUNC_NAME_A _is set_, assign its value to
+# *_result variable of FUNC_NAME_B.
+func_propagate_result ()
+{
+    $debug_cmd
+
+    func_propagate_result_result=:
+    if eval "test \"\${${1}_result+set}\" = set"
+    then
+      eval "${2}_result=\$${1}_result"
+    else
+      func_propagate_result_result=false
+    fi
+}
+
+
 # func_run_hooks FUNC_NAME [ARG]...
 # ---------------------------------
 # Run all hook functions registered to FUNC_NAME.
-# It is assumed that the list of hook functions contains nothing more
+# It's assumed that the list of hook functions contains nothing more
 # than a whitespace-delimited list of legal shell function names, and
 # no effort is wasted trying to catch shell meta-characters or preserve
 # whitespace.
@@ -1532,22 +1708,19 @@ func_run_hooks ()
 
     case " $hookable_fns " in
       *" $1 "*) ;;
-      *) func_fatal_error "'$1' does not support hook funcions.n" ;;
+      *) func_fatal_error "'$1' does not support hook functions." ;;
     esac
 
     eval _G_hook_fns=\$$1_hooks; shift
 
     for _G_hook in $_G_hook_fns; do
-      eval $_G_hook '"$@"'
-
-      # store returned options list back into positional
-      # parameters for next 'cmd' execution.
-      eval _G_hook_result=\$${_G_hook}_result
-      eval set dummy "$_G_hook_result"; shift
+      func_unset "${_G_hook}_result"
+      eval $_G_hook '${1+"$@"}'
+      func_propagate_result $_G_hook func_run_hooks
+      if $func_propagate_result_result; then
+        eval set dummy "$func_run_hooks_result"; shift
+      fi
     done
-
-    func_quote_for_eval ${1+"$@"}
-    func_run_hooks_result=$func_quote_for_eval_result
 }
 
 
@@ -1557,10 +1730,18 @@ func_run_hooks ()
 ## --------------- ##
 
 # In order to add your own option parsing hooks, you must accept the
-# full positional parameter list in your hook function, remove any
-# options that you action, and then pass back the remaining unprocessed
-# options in '<hooked_function_name>_result', escaped suitably for
-# 'eval'.  Like this:
+# full positional parameter list from your hook function.  You may remove
+# or edit any options that you action, and then pass back the remaining
+# unprocessed options in '<hooked_function_name>_result', escaped
+# suitably for 'eval'.
+#
+# The '<hooked_function_name>_result' variable is automatically unset
+# before your hook gets called; for best performance, only set the
+# *_result variable when necessary (i.e. don't call the 'func_quote'
+# function unnecessarily because it can be an expensive operation on some
+# machines).
+#
+# Like this:
 #
 #    my_options_prep ()
 #    {
@@ -1570,9 +1751,8 @@ func_run_hooks ()
 #        usage_message=$usage_message'
 #      -s, --silent       don'\''t print informational messages
 #    '
-#
-#        func_quote_for_eval ${1+"$@"}
-#        my_options_prep_result=$func_quote_for_eval_result
+#        # No change in '$@' (ignored completely by this hook).  Leave
+#        # my_options_prep_result variable intact.
 #    }
 #    func_add_hook func_options_prep my_options_prep
 #
@@ -1581,25 +1761,36 @@ func_run_hooks ()
 #    {
 #        $debug_cmd
 #
-#        # Note that for efficiency, we parse as many options as we can
+#        args_changed=false
+#
+#        # Note that, for efficiency, we parse as many options as we can
 #        # recognise in a loop before passing the remainder back to the
 #        # caller on the first unrecognised argument we encounter.
 #        while test $# -gt 0; do
 #          opt=$1; shift
 #          case $opt in
-#            --silent|-s) opt_silent=: ;;
+#            --silent|-s) opt_silent=:
+#                         args_changed=:
+#                         ;;
 #            # Separate non-argument short options:
 #            -s*)         func_split_short_opt "$_G_opt"
 #                         set dummy "$func_split_short_opt_name" \
 #                             "-$func_split_short_opt_arg" ${1+"$@"}
 #                         shift
+#                         args_changed=:
 #                         ;;
-#            *)            set dummy "$_G_opt" "$*"; shift; break ;;
+#            *)           # Make sure the first unrecognised option "$_G_opt"
+#                         # is added back to "$@" in case we need it later,
+#                         # if $args_changed was set to 'true'.
+#                         set dummy "$_G_opt" ${1+"$@"}; shift; break ;;
 #          esac
 #        done
 #
-#        func_quote_for_eval ${1+"$@"}
-#        my_silent_option_result=$func_quote_for_eval_result
+#        # Only call 'func_quote' here if we processed at least one argument.
+#        if $args_changed; then
+#          func_quote eval ${1+"$@"}
+#          my_silent_option_result=$func_quote_result
+#        fi
 #    }
 #    func_add_hook func_parse_options my_silent_option
 #
@@ -1610,17 +1801,26 @@ func_run_hooks ()
 #
 #        $opt_silent && $opt_verbose && func_fatal_help "\
 #    '--silent' and '--verbose' options are mutually exclusive."
-#
-#        func_quote_for_eval ${1+"$@"}
-#        my_option_validation_result=$func_quote_for_eval_result
 #    }
 #    func_add_hook func_validate_options my_option_validation
 #
-# You'll alse need to manually amend $usage_message to reflect the extra
+# You'll also need to manually amend $usage_message to reflect the extra
 # options you parse.  It's preferable to append if you can, so that
 # multiple option parsing hooks can be added safely.
 
 
+# func_options_finish [ARG]...
+# ----------------------------
+# Finishing the option parse loop (call 'func_options' hooks ATM).
+func_options_finish ()
+{
+    $debug_cmd
+
+    func_run_hooks func_options ${1+"$@"}
+    func_propagate_result func_run_hooks func_options_finish
+}
+
+
 # func_options [ARG]...
 # ---------------------
 # All the functions called inside func_options are hookable. See the
@@ -1630,17 +1830,27 @@ func_options ()
 {
     $debug_cmd
 
-    func_options_prep ${1+"$@"}
-    eval func_parse_options \
-        ${func_options_prep_result+"$func_options_prep_result"}
-    eval func_validate_options \
-        ${func_parse_options_result+"$func_parse_options_result"}
+    _G_options_quoted=false
 
-    eval func_run_hooks func_options \
-        ${func_validate_options_result+"$func_validate_options_result"}
+    for my_func in options_prep parse_options validate_options options_finish
+    do
+      func_unset func_${my_func}_result
+      func_unset func_run_hooks_result
+      eval func_$my_func '${1+"$@"}'
+      func_propagate_result func_$my_func func_options
+      if $func_propagate_result_result; then
+        eval set dummy "$func_options_result"; shift
+        _G_options_quoted=:
+      fi
+    done
 
-    # save modified positional parameters for caller
-    func_options_result=$func_run_hooks_result
+    $_G_options_quoted || {
+      # As we (func_options) are top-level options-parser function and
+      # nobody quoted "$@" for us yet, we need to do it explicitly for
+      # caller.
+      func_quote eval ${1+"$@"}
+      func_options_result=$func_quote_result
+    }
 }
 
 
@@ -1649,9 +1859,8 @@ func_options ()
 # All initialisations required before starting the option parse loop.
 # Note that when calling hook functions, we pass through the list of
 # positional parameters.  If a hook function modifies that list, and
-# needs to propogate that back to rest of this script, then the complete
-# modified list must be put in 'func_run_hooks_result' before
-# returning.
+# needs to propagate that back to rest of this script, then the complete
+# modified list must be put in 'func_run_hooks_result' before returning.
 func_hookable func_options_prep
 func_options_prep ()
 {
@@ -1662,9 +1871,7 @@ func_options_prep ()
     opt_warning_types=
 
     func_run_hooks func_options_prep ${1+"$@"}
-
-    # save modified positional parameters for caller
-    func_options_prep_result=$func_run_hooks_result
+    func_propagate_result func_run_hooks func_options_prep
 }
 
 
@@ -1676,25 +1883,32 @@ func_parse_options ()
 {
     $debug_cmd
 
-    func_parse_options_result=
-
+    _G_parse_options_requote=false
     # this just eases exit handling
     while test $# -gt 0; do
       # Defer to hook functions for initial option parsing, so they
       # get priority in the event of reusing an option name.
       func_run_hooks func_parse_options ${1+"$@"}
-
-      # Adjust func_parse_options positional parameters to match
-      eval set dummy "$func_run_hooks_result"; shift
+      func_propagate_result func_run_hooks func_parse_options
+      if $func_propagate_result_result; then
+        eval set dummy "$func_parse_options_result"; shift
+        # Even though we may have changed "$@", we passed the "$@" array
+        # down into the hook and it quoted it for us (because we are in
+        # this if-branch).  No need to quote it again.
+        _G_parse_options_requote=false
+      fi
 
       # Break out of the loop if we already parsed every option.
       test $# -gt 0 || break
 
+      # We expect that one of the options parsed in this function matches
+      # and thus we remove _G_opt from "$@" and need to re-quote.
+      _G_match_parse_options=:
       _G_opt=$1
       shift
       case $_G_opt in
         --debug|-x)   debug_cmd='set -x'
-                      func_echo "enabling shell trace mode"
+                      func_echo "enabling shell trace mode" >&2
                       $debug_cmd
                       ;;
 
@@ -1704,7 +1918,10 @@ func_parse_options ()
 		      ;;
 
         --warnings|--warning|-W)
-                      test $# = 0 && func_missing_arg $_G_opt && break
+                      if test $# = 0 && func_missing_arg $_G_opt; then
+                        _G_parse_options_requote=:
+                        break
+                      fi
                       case " $warning_categories $1" in
                         *" $1 "*)
                           # trailing space prevents matching last $1 above
@@ -1757,15 +1974,24 @@ func_parse_options ()
                       shift
                       ;;
 
-        --)           break ;;
+        --)           _G_parse_options_requote=: ; break ;;
         -*)           func_fatal_help "unrecognised option: '$_G_opt'" ;;
-        *)            set dummy "$_G_opt" ${1+"$@"}; shift; break ;;
+        *)            set dummy "$_G_opt" ${1+"$@"}; shift
+                      _G_match_parse_options=false
+                      break
+                      ;;
       esac
+
+      if $_G_match_parse_options; then
+        _G_parse_options_requote=:
+      fi
     done
 
-    # save modified positional parameters for caller
-    func_quote_for_eval ${1+"$@"}
-    func_parse_options_result=$func_quote_for_eval_result
+    if $_G_parse_options_requote; then
+      # save modified positional parameters for caller
+      func_quote eval ${1+"$@"}
+      func_parse_options_result=$func_quote_result
+    fi
 }
 
 
@@ -1782,12 +2008,10 @@ func_validate_options ()
     test -n "$opt_warning_types" || opt_warning_types=" $warning_categories"
 
     func_run_hooks func_validate_options ${1+"$@"}
+    func_propagate_result func_run_hooks func_validate_options
 
     # Bail if the options were screwed!
     $exit_cmd $EXIT_FAILURE
-
-    # save modified positional parameters for caller
-    func_validate_options_result=$func_run_hooks_result
 }
 
 
@@ -1843,8 +2067,8 @@ func_missing_arg ()
 
 # func_split_equals STRING
 # ------------------------
-# Set func_split_equals_lhs and func_split_equals_rhs shell variables after
-# splitting STRING at the '=' sign.
+# Set func_split_equals_lhs and func_split_equals_rhs shell variables
+# after splitting STRING at the '=' sign.
 test -z "$_G_HAVE_XSI_OPS" \
     && (eval 'x=a/b/c;
       test 5aa/bb/cc = "${#x}${x%%/*}${x%/*}${x#*/}${x##*/}"') 2>/dev/null \
@@ -1859,8 +2083,9 @@ then
 
       func_split_equals_lhs=${1%%=*}
       func_split_equals_rhs=${1#*=}
-      test "x$func_split_equals_lhs" = "x$1" \
-        && func_split_equals_rhs=
+      if test "x$func_split_equals_lhs" = "x$1"; then
+        func_split_equals_rhs=
+      fi
   }'
 else
   # ...otherwise fall back to using expr, which is often a shell builtin.
@@ -1870,7 +2095,7 @@ else
 
       func_split_equals_lhs=`expr "x$1" : 'x\([^=]*\)'`
       func_split_equals_rhs=
-      test "x$func_split_equals_lhs" = "x$1" \
+      test "x$func_split_equals_lhs=" = "x$1" \
         || func_split_equals_rhs=`expr "x$1" : 'x[^=]*=\(.*\)$'`
   }
 fi #func_split_equals
@@ -1896,7 +2121,7 @@ else
   {
       $debug_cmd
 
-      func_split_short_opt_name=`expr "x$1" : 'x-\(.\)'`
+      func_split_short_opt_name=`expr "x$1" : 'x\(-.\)'`
       func_split_short_opt_arg=`expr "x$1" : 'x-.\(.*\)$'`
   }
 fi #func_split_short_opt
@@ -1938,31 +2163,44 @@ func_usage_message ()
 # func_version
 # ------------
 # Echo version message to standard output and exit.
+# The version message is extracted from the calling file's header
+# comments, with leading '# ' stripped:
+#   1. First display the progname and version
+#   2. Followed by the header comment line matching  /^# Written by /
+#   3. Then a blank line followed by the first following line matching
+#      /^# Copyright /
+#   4. Immediately followed by any lines between the previous matches,
+#      except lines preceding the intervening completely blank line.
+# For example, see the header comments of this file.
 func_version ()
 {
     $debug_cmd
 
     printf '%s\n' "$progname $scriptversion"
     $SED -n '
-        /(C)/!b go
-        :more
-        /\./!{
-          N
-          s|\n# | |
-          b more
-        }
-        :go
-        /^# Written by /,/# warranty; / {
-          s|^# ||
-          s|^# *$||
-          s|\((C)\)[ 0-9,-]*[ ,-]\([1-9][0-9]* \)|\1 \2|
-          p
+        /^# Written by /!b
+        s|^# ||; p; n
+
+        :fwd2blnk
+        /./ {
+          n
+          b fwd2blnk
         }
-        /^# Written by / {
-          s|^# ||
-          p
+        p; n
+
+        :holdwrnt
+        s|^# ||
+        s|^# *$||
+        /^Copyright /!{
+          /./H
+          n
+          b holdwrnt
         }
-        /^warranty; /q' < "$progpath"
+
+        s|\((C)\)[ 0-9,-]*[ ,-]\([1-9][0-9]* \)|\1 \2|
+        G
+        s|\(\n\)\n*|\1|g
+        p; q' < "$progpath"
 
     exit $?
 }
@@ -1972,12 +2210,12 @@ func_version ()
 # mode: shell-script
 # sh-indentation: 2
 # eval: (add-hook 'before-save-hook 'time-stamp)
-# time-stamp-pattern: "10/scriptversion=%:y-%02m-%02d.%02H; # UTC"
+# time-stamp-pattern: "30/scriptversion=%:y-%02m-%02d.%02H; # UTC"
 # time-stamp-time-zone: "UTC"
 # End:
 
 # Set a version string.
-scriptversion='(GNU libtool) 2.4.6'
+scriptversion='(GNU libtool) 2.4.7'
 
 
 # func_echo ARG...
@@ -2068,7 +2306,7 @@ include the following information:
        compiler:       $LTCC
        compiler flags: $LTCFLAGS
        linker:         $LD (gnu? $with_gnu_ld)
-       version:        $progname (GNU libtool) 2.4.6
+       version:        $progname (GNU libtool) 2.4.7
        automake:       `($AUTOMAKE --version) 2>/dev/null |$SED 1q`
        autoconf:       `($AUTOCONF --version) 2>/dev/null |$SED 1q`
 
@@ -2124,7 +2362,7 @@ fi
 # a configuration failure hint, and exit.
 func_fatal_configuration ()
 {
-    func__fatal_error ${1+"$@"} \
+    func_fatal_error ${1+"$@"} \
       "See the $PACKAGE documentation for more information." \
       "Fatal configuration error."
 }
@@ -2270,6 +2508,8 @@ libtool_options_prep ()
     nonopt=
     preserve_args=
 
+    _G_rc_lt_options_prep=:
+
     # Shorthand for --mode=foo, only valid as the first argument
     case $1 in
     clean|clea|cle|cl)
@@ -2293,11 +2533,16 @@ libtool_options_prep ()
     uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
       shift; set dummy --mode uninstall ${1+"$@"}; shift
       ;;
+    *)
+      _G_rc_lt_options_prep=false
+      ;;
     esac
 
-    # Pass back the list of options.
-    func_quote_for_eval ${1+"$@"}
-    libtool_options_prep_result=$func_quote_for_eval_result
+    if $_G_rc_lt_options_prep; then
+      # Pass back the list of options.
+      func_quote eval ${1+"$@"}
+      libtool_options_prep_result=$func_quote_result
+    fi
 }
 func_add_hook func_options_prep libtool_options_prep
 
@@ -2309,9 +2554,12 @@ libtool_parse_options ()
 {
     $debug_cmd
 
+    _G_rc_lt_parse_options=false
+
     # Perform our own loop to consume as many options as possible in
     # each iteration.
     while test $# -gt 0; do
+      _G_match_lt_parse_options=:
       _G_opt=$1
       shift
       case $_G_opt in
@@ -2386,15 +2634,20 @@ libtool_parse_options ()
                         func_append preserve_args " $_G_opt"
                         ;;
 
-	# An option not handled by this hook function:
-        *)		set dummy "$_G_opt" ${1+"$@"};	shift; break  ;;
+        # An option not handled by this hook function:
+        *)              set dummy "$_G_opt" ${1+"$@"} ; shift
+                        _G_match_lt_parse_options=false
+                        break
+                        ;;
       esac
+      $_G_match_lt_parse_options && _G_rc_lt_parse_options=:
     done
 
-
-    # save modified positional parameters for caller
-    func_quote_for_eval ${1+"$@"}
-    libtool_parse_options_result=$func_quote_for_eval_result
+    if $_G_rc_lt_parse_options; then
+      # save modified positional parameters for caller
+      func_quote eval ${1+"$@"}
+      libtool_parse_options_result=$func_quote_result
+    fi
 }
 func_add_hook func_parse_options libtool_parse_options
 
@@ -2451,8 +2704,8 @@ libtool_validate_options ()
     }
 
     # Pass back the unparsed argument list
-    func_quote_for_eval ${1+"$@"}
-    libtool_validate_options_result=$func_quote_for_eval_result
+    func_quote eval ${1+"$@"}
+    libtool_validate_options_result=$func_quote_result
 }
 func_add_hook func_validate_options libtool_validate_options
 
@@ -3418,8 +3671,8 @@ func_mode_compile ()
       esac
     done
 
-    func_quote_for_eval "$libobj"
-    test "X$libobj" != "X$func_quote_for_eval_result" \
+    func_quote_arg pretty "$libobj"
+    test "X$libobj" != "X$func_quote_arg_result" \
       && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"'	 &()|`$[]' \
       && func_warning "libobj name '$libobj' may not contain shell special characters."
     func_dirname_and_basename "$obj" "/" ""
@@ -3492,8 +3745,8 @@ compiler."
 
     func_to_tool_file "$srcfile" func_convert_file_msys_to_w32
     srcfile=$func_to_tool_file_result
-    func_quote_for_eval "$srcfile"
-    qsrcfile=$func_quote_for_eval_result
+    func_quote_arg pretty "$srcfile"
+    qsrcfile=$func_quote_arg_result
 
     # Only build a PIC object if we are building libtool libraries.
     if test yes = "$build_libtool_libs"; then
@@ -3648,7 +3901,8 @@ This mode accepts the following additional options:
   -prefer-non-pic   try to build non-PIC objects only
   -shared           do not build a '.o' file suitable for static linking
   -static           only build a '.o' file suitable for static linking
-  -Wc,FLAG          pass FLAG directly to the compiler
+  -Wc,FLAG
+  -Xcompiler FLAG   pass FLAG directly to the compiler
 
 COMPILE-COMMAND is a command to be used in creating a 'standard' object file
 from the given SOURCEFILE.
@@ -3754,6 +4008,8 @@ The following components of LINK-COMMAND are treated specially:
   -weak LIBNAME     declare that the target provides the LIBNAME interface
   -Wc,FLAG
   -Xcompiler FLAG   pass linker-specific FLAG directly to the compiler
+  -Wa,FLAG
+  -Xassembler FLAG  pass linker-specific FLAG directly to the assembler
   -Wl,FLAG
   -Xlinker FLAG     pass linker-specific FLAG directly to the linker
   -XCClinker FLAG   pass link-specific FLAG to the compiler driver (CC)
@@ -4096,8 +4352,8 @@ func_mode_install ()
        case $nonopt in *shtool*) :;; *) false;; esac
     then
       # Aesthetically quote it.
-      func_quote_for_eval "$nonopt"
-      install_prog="$func_quote_for_eval_result "
+      func_quote_arg pretty "$nonopt"
+      install_prog="$func_quote_arg_result "
       arg=$1
       shift
     else
@@ -4107,8 +4363,8 @@ func_mode_install ()
 
     # The real first argument should be the name of the installation program.
     # Aesthetically quote it.
-    func_quote_for_eval "$arg"
-    func_append install_prog "$func_quote_for_eval_result"
+    func_quote_arg pretty "$arg"
+    func_append install_prog "$func_quote_arg_result"
     install_shared_prog=$install_prog
     case " $install_prog " in
       *[\\\ /]cp\ *) install_cp=: ;;
@@ -4165,12 +4421,12 @@ func_mode_install ()
       esac
 
       # Aesthetically quote the argument.
-      func_quote_for_eval "$arg"
-      func_append install_prog " $func_quote_for_eval_result"
+      func_quote_arg pretty "$arg"
+      func_append install_prog " $func_quote_arg_result"
       if test -n "$arg2"; then
-	func_quote_for_eval "$arg2"
+	func_quote_arg pretty "$arg2"
       fi
-      func_append install_shared_prog " $func_quote_for_eval_result"
+      func_append install_shared_prog " $func_quote_arg_result"
     done
 
     test -z "$install_prog" && \
@@ -4181,8 +4437,8 @@ func_mode_install ()
 
     if test -n "$install_override_mode" && $no_mode; then
       if $install_cp; then :; else
-	func_quote_for_eval "$install_override_mode"
-	func_append install_shared_prog " -m $func_quote_for_eval_result"
+	func_quote_arg pretty "$install_override_mode"
+	func_append install_shared_prog " -m $func_quote_arg_result"
       fi
     fi
 
@@ -4478,8 +4734,8 @@ func_mode_install ()
 	        relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'`
 
 	        $opt_quiet || {
-	          func_quote_for_expand "$relink_command"
-		  eval "func_echo $func_quote_for_expand_result"
+	          func_quote_arg expand,pretty "$relink_command"
+		  eval "func_echo $func_quote_arg_result"
 	        }
 	        if eval "$relink_command"; then :
 	          else
@@ -5258,7 +5514,8 @@ else
   if test \"\$libtool_execute_magic\" != \"$magic\"; then
     file=\"\$0\""
 
-    qECHO=`$ECHO "$ECHO" | $SED "$sed_quote_subst"`
+    func_quote_arg pretty "$ECHO"
+    qECHO=$func_quote_arg_result
     $ECHO "\
 
 # A function that is used when there is no print builtin or printf.
@@ -5268,7 +5525,7 @@ func_fallback_echo ()
 \$1
 _LTECHO_EOF'
 }
-    ECHO=\"$qECHO\"
+    ECHO=$qECHO
   fi
 
 # Very basic option parsing. These options are (a) specific to
@@ -6611,9 +6868,9 @@ func_mode_link ()
     while test "$#" -gt 0; do
       arg=$1
       shift
-      func_quote_for_eval "$arg"
-      qarg=$func_quote_for_eval_unquoted_result
-      func_append libtool_args " $func_quote_for_eval_result"
+      func_quote_arg pretty,unquoted "$arg"
+      qarg=$func_quote_arg_unquoted_result
+      func_append libtool_args " $func_quote_arg_result"
 
       # If the previous option needs an argument, assign it.
       if test -n "$prev"; then
@@ -6849,6 +7106,13 @@ func_mode_link ()
 	  prev=
 	  continue
 	  ;;
+	xassembler)
+	  func_append compiler_flags " -Xassembler $qarg"
+	  prev=
+	  func_append compile_command " -Xassembler $qarg"
+	  func_append finalize_command " -Xassembler $qarg"
+	  continue
+	  ;;
 	xcclinker)
 	  func_append linker_flags " $qarg"
 	  func_append compiler_flags " $qarg"
@@ -7019,7 +7283,7 @@ func_mode_link ()
 	    # These systems don't actually have a C library (as such)
 	    test X-lc = "X$arg" && continue
 	    ;;
-	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*)
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*)
 	    # Do not include libc due to us having libc/libc_r.
 	    test X-lc = "X$arg" && continue
 	    ;;
@@ -7039,7 +7303,7 @@ func_mode_link ()
 	  esac
 	elif test X-lc_r = "X$arg"; then
 	 case $host in
-	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*)
+	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*)
 	   # Do not include libc_r directly, use -pthread flag.
 	   continue
 	   ;;
@@ -7069,8 +7333,20 @@ func_mode_link ()
 	prev=xcompiler
 	continue
 	;;
-
-      -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
+     # Solaris ld rejects as of 11.4. Refer to Oracle bug 22985199.
+     -pthread)
+	case $host in
+	  *solaris2*) ;;
+	  *)
+	    case "$new_inherited_linker_flags " in
+	        *" $arg "*) ;;
+	        * ) func_append new_inherited_linker_flags " $arg" ;;
+	    esac
+	  ;;
+	esac
+	continue
+	;;
+      -mt|-mthreads|-kthread|-Kthread|-pthreads|--thread-safe \
       |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
 	func_append compiler_flags " $arg"
 	func_append compile_command " $arg"
@@ -7211,9 +7487,9 @@ func_mode_link ()
 	save_ifs=$IFS; IFS=,
 	for flag in $args; do
 	  IFS=$save_ifs
-          func_quote_for_eval "$flag"
-	  func_append arg " $func_quote_for_eval_result"
-	  func_append compiler_flags " $func_quote_for_eval_result"
+          func_quote_arg pretty "$flag"
+	  func_append arg " $func_quote_arg_result"
+	  func_append compiler_flags " $func_quote_arg_result"
 	done
 	IFS=$save_ifs
 	func_stripname ' ' '' "$arg"
@@ -7227,16 +7503,21 @@ func_mode_link ()
 	save_ifs=$IFS; IFS=,
 	for flag in $args; do
 	  IFS=$save_ifs
-          func_quote_for_eval "$flag"
-	  func_append arg " $wl$func_quote_for_eval_result"
-	  func_append compiler_flags " $wl$func_quote_for_eval_result"
-	  func_append linker_flags " $func_quote_for_eval_result"
+          func_quote_arg pretty "$flag"
+	  func_append arg " $wl$func_quote_arg_result"
+	  func_append compiler_flags " $wl$func_quote_arg_result"
+	  func_append linker_flags " $func_quote_arg_result"
 	done
 	IFS=$save_ifs
 	func_stripname ' ' '' "$arg"
 	arg=$func_stripname_result
 	;;
 
+      -Xassembler)
+        prev=xassembler
+        continue
+        ;;
+
       -Xcompiler)
 	prev=xcompiler
 	continue
@@ -7254,8 +7535,8 @@ func_mode_link ()
 
       # -msg_* for osf cc
       -msg_*)
-	func_quote_for_eval "$arg"
-	arg=$func_quote_for_eval_result
+	func_quote_arg pretty "$arg"
+	arg=$func_quote_arg_result
 	;;
 
       # Flags to be passed through unchanged, with rationale:
@@ -7272,12 +7553,17 @@ func_mode_link ()
       # -tp=*                Portland pgcc target processor selection
       # --sysroot=*          for sysroot support
       # -O*, -g*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
+      # -specs=*             GCC specs files
       # -stdlib=*            select c++ std lib with clang
+      # -fsanitize=*         Clang/GCC memory and address sanitizer
+      # -fuse-ld=*           Linker select flags for GCC
+      # -Wa,*                Pass flags directly to the assembler
       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
       -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
-      -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*)
-        func_quote_for_eval "$arg"
-	arg=$func_quote_for_eval_result
+      -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
+      -specs=*|-fsanitize=*|-fuse-ld=*|-Wa,*)
+        func_quote_arg pretty "$arg"
+	arg=$func_quote_arg_result
         func_append compile_command " $arg"
         func_append finalize_command " $arg"
         func_append compiler_flags " $arg"
@@ -7298,15 +7584,15 @@ func_mode_link ()
 	  continue
         else
 	  # Otherwise treat like 'Some other compiler flag' below
-	  func_quote_for_eval "$arg"
-	  arg=$func_quote_for_eval_result
+	  func_quote_arg pretty "$arg"
+	  arg=$func_quote_arg_result
         fi
 	;;
 
       # Some other compiler flag.
       -* | +*)
-        func_quote_for_eval "$arg"
-	arg=$func_quote_for_eval_result
+        func_quote_arg pretty "$arg"
+	arg=$func_quote_arg_result
 	;;
 
       *.$objext)
@@ -7426,8 +7712,8 @@ func_mode_link ()
       *)
 	# Unknown arguments in both finalize_command and compile_command need
 	# to be aesthetically quoted because they are evaled later.
-	func_quote_for_eval "$arg"
-	arg=$func_quote_for_eval_result
+	func_quote_arg pretty "$arg"
+	arg=$func_quote_arg_result
 	;;
       esac # arg
 
@@ -8632,7 +8918,7 @@ func_mode_link ()
       test CXX = "$tagname" && {
         case $host_os in
         linux*)
-          case `$CC -V 2>&1 | sed 5q` in
+          case `$CC -V 2>&1 | $SED 5q` in
           *Sun\ C*) # Sun C++ 5.9
             func_suncc_cstd_abi
 
@@ -8805,7 +9091,7 @@ func_mode_link ()
 	  #
 	  case $version_type in
 	  # correct linux to gnu/linux during the next big refactor
-	  darwin|freebsd-elf|linux|osf|windows|none)
+	  darwin|freebsd-elf|linux|midnightbsd-elf|osf|windows|none)
 	    func_arith $number_major + $number_minor
 	    current=$func_arith_result
 	    age=$number_minor
@@ -8896,7 +9182,7 @@ func_mode_link ()
 	  versuffix=.$current.$revision
 	  ;;
 
-	freebsd-elf)
+	freebsd-elf | midnightbsd-elf)
 	  func_arith $current - $age
 	  major=.$func_arith_result
 	  versuffix=$major.$age.$revision
@@ -9122,7 +9408,7 @@ func_mode_link ()
 	  *-*-netbsd*)
 	    # Don't link with libc until the a.out ld.so is fixed.
 	    ;;
-	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-midnightbsd*)
 	    # Do not include libc due to us having libc/libc_r.
 	    ;;
 	  *-*-sco3.2v5* | *-*-sco5v6*)
@@ -9933,8 +10219,8 @@ EOF
 	    for cmd in $concat_cmds; do
 	      IFS=$save_ifs
 	      $opt_quiet || {
-		  func_quote_for_expand "$cmd"
-		  eval "func_echo $func_quote_for_expand_result"
+		  func_quote_arg expand,pretty "$cmd"
+		  eval "func_echo $func_quote_arg_result"
 	      }
 	      $opt_dry_run || eval "$cmd" || {
 		lt_exit=$?
@@ -10027,8 +10313,8 @@ EOF
 	  eval cmd=\"$cmd\"
 	  IFS=$save_ifs
 	  $opt_quiet || {
-	    func_quote_for_expand "$cmd"
-	    eval "func_echo $func_quote_for_expand_result"
+	    func_quote_arg expand,pretty "$cmd"
+	    eval "func_echo $func_quote_arg_result"
 	  }
 	  $opt_dry_run || eval "$cmd" || {
 	    lt_exit=$?
@@ -10502,12 +10788,13 @@ EOF
 	  elif eval var_value=\$$var; test -z "$var_value"; then
 	    relink_command="$var=; export $var; $relink_command"
 	  else
-	    func_quote_for_eval "$var_value"
-	    relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+	    func_quote_arg pretty "$var_value"
+	    relink_command="$var=$func_quote_arg_result; export $var; $relink_command"
 	  fi
 	done
-	relink_command="(cd `pwd`; $relink_command)"
-	relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
+	func_quote eval cd "`pwd`"
+	func_quote_arg pretty,unquoted "($func_quote_result; $relink_command)"
+	relink_command=$func_quote_arg_unquoted_result
       fi
 
       # Only actually do things if not in dry run mode.
@@ -10747,13 +11034,15 @@ EOF
 	elif eval var_value=\$$var; test -z "$var_value"; then
 	  relink_command="$var=; export $var; $relink_command"
 	else
-	  func_quote_for_eval "$var_value"
-	  relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+	  func_quote_arg pretty,unquoted "$var_value"
+	  relink_command="$var=$func_quote_arg_unquoted_result; export $var; $relink_command"
 	fi
       done
       # Quote the link command for shipping.
-      relink_command="(cd `pwd`; $SHELL \"$progpath\" $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
-      relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
+      func_quote eval cd "`pwd`"
+      relink_command="($func_quote_result; $SHELL \"$progpath\" $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
+      func_quote_arg pretty,unquoted "$relink_command"
+      relink_command=$func_quote_arg_unquoted_result
       if test yes = "$hardcode_automatic"; then
 	relink_command=
       fi
diff --git a/configure b/configure
index 090101d..a5cc895 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for libHX 4.17.
+# Generated by GNU Autoconf 2.71 for libHX 4.19.
 #
 #
 # Copyright (C) 1992-1996, 1998-2017, 2020-2021 Free Software Foundation,
@@ -618,8 +618,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libHX'
 PACKAGE_TARNAME='libhx'
-PACKAGE_VERSION='4.17'
-PACKAGE_STRING='libHX 4.17'
+PACKAGE_VERSION='4.19'
+PACKAGE_STRING='libHX 4.19'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
@@ -686,6 +686,7 @@ MANIFEST_TOOL
 RANLIB
 DLLTOOL
 OBJDUMP
+FILECMD
 LN_S
 NM
 ac_ct_DUMPBIN
@@ -1374,7 +1375,7 @@ 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 libHX 4.17 to adapt to many kinds of systems.
+\`configure' configures libHX 4.19 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1445,7 +1446,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libHX 4.17:";;
+     short | recursive ) echo "Configuration of libHX 4.19:";;
    esac
   cat <<\_ACEOF
 
@@ -1560,7 +1561,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libHX configure 4.17
+libHX configure 4.19
 generated by GNU Autoconf 2.71
 
 Copyright (C) 2021 Free Software Foundation, Inc.
@@ -2194,7 +2195,7 @@ 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 libHX $as_me 4.17, which was
+It was created by libHX $as_me 4.19, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3683,7 +3684,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libhx'
- VERSION='4.17'
+ VERSION='4.19'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -5901,8 +5902,8 @@ esac
 
 
 
-macro_version='2.4.6'
-macro_revision='2.4.6'
+macro_version='2.4.7'
+macro_revision='2.4.7'
 
 
 
@@ -6530,13 +6531,13 @@ else
 	mingw*) lt_bad_file=conftest.nm/nofile ;;
 	*) lt_bad_file=/dev/null ;;
 	esac
-	case `"$tmp_nm" -B $lt_bad_file 2>&1 | sed '1q'` in
+	case `"$tmp_nm" -B $lt_bad_file 2>&1 | $SED '1q'` in
 	*$lt_bad_file* | *'Invalid file or object type'*)
 	  lt_cv_path_NM="$tmp_nm -B"
 	  break 2
 	  ;;
 	*)
-	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  case `"$tmp_nm" -p /dev/null 2>&1 | $SED '1q'` in
 	  */dev/null*)
 	    lt_cv_path_NM="$tmp_nm -p"
 	    break 2
@@ -6674,7 +6675,7 @@ esac
   fi
 fi
 
-    case `$DUMPBIN -symbols -headers /dev/null 2>&1 | sed '1q'` in
+    case `$DUMPBIN -symbols -headers /dev/null 2>&1 | $SED '1q'` in
     *COFF*)
       DUMPBIN="$DUMPBIN -symbols -headers"
       ;;
@@ -6778,7 +6779,7 @@ else $as_nop
     lt_cv_sys_max_cmd_len=8192;
     ;;
 
-  bitrig* | darwin* | dragonfly* | freebsd* | netbsd* | openbsd*)
+  bitrig* | darwin* | dragonfly* | freebsd* | midnightbsd* | netbsd* | openbsd*)
     # This has been around since 386BSD, at least.  Likely further.
     if test -x /sbin/sysctl; then
       lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
@@ -6821,7 +6822,7 @@ else $as_nop
   sysv5* | sco5v6* | sysv4.2uw2*)
     kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
     if test -n "$kargmax"; then
-      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[	 ]//'`
+      lt_cv_sys_max_cmd_len=`echo $kargmax | $SED 's/.*[	 ]//'`
     else
       lt_cv_sys_max_cmd_len=32768
     fi
@@ -7026,6 +7027,114 @@ esac
 
 
 
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}file", so it can be a program name with args.
+set dummy ${ac_tool_prefix}file; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_FILECMD+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$FILECMD"; then
+  ac_cv_prog_FILECMD="$FILECMD" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    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_FILECMD="${ac_tool_prefix}file"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+FILECMD=$ac_cv_prog_FILECMD
+if test -n "$FILECMD"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $FILECMD" >&5
+printf "%s\n" "$FILECMD" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_FILECMD"; then
+  ac_ct_FILECMD=$FILECMD
+  # Extract the first word of "file", so it can be a program name with args.
+set dummy file; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_FILECMD+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_FILECMD"; then
+  ac_cv_prog_ac_ct_FILECMD="$ac_ct_FILECMD" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    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_FILECMD="file"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_FILECMD=$ac_cv_prog_ac_ct_FILECMD
+if test -n "$ac_ct_FILECMD"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_FILECMD" >&5
+printf "%s\n" "$ac_ct_FILECMD" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_FILECMD" = x; then
+    FILECMD=":"
+  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;}
+ac_tool_warned=yes ;;
+esac
+    FILECMD=$ac_ct_FILECMD
+  fi
+else
+  FILECMD="$ac_cv_prog_FILECMD"
+fi
+
+
+
+
+
+
+
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
 set dummy ${ac_tool_prefix}objdump; ac_word=$2
@@ -7169,7 +7278,7 @@ beos*)
 
 bsdi[45]*)
   lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'
-  lt_cv_file_magic_cmd='/usr/bin/file -L'
+  lt_cv_file_magic_cmd='$FILECMD -L'
   lt_cv_file_magic_test_file=/shlib/libc.so
   ;;
 
@@ -7203,14 +7312,14 @@ darwin* | rhapsody*)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
-freebsd* | dragonfly*)
+freebsd* | dragonfly* | midnightbsd*)
   if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
     case $host_cpu in
     i*86 )
       # Not sure whether the presence of OpenBSD here was a mistake.
       # Let's accept both of them until this is cleared up.
       lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
-      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_cmd=$FILECMD
       lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
       ;;
     esac
@@ -7224,7 +7333,7 @@ haiku*)
   ;;
 
 hpux10.20* | hpux11*)
-  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_cmd=$FILECMD
   case $host_cpu in
   ia64*)
     lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64'
@@ -7271,7 +7380,7 @@ netbsd*)
 
 newos6*)
   lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)'
-  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_cmd=$FILECMD
   lt_cv_file_magic_test_file=/usr/lib/libnls.so
   ;;
 
@@ -7644,13 +7753,29 @@ esac
 fi
 
 : ${AR=ar}
-: ${AR_FLAGS=cru}
 
 
 
 
 
 
+# Use ARFLAGS variable as AR's operation code to sync the variable naming with
+# Automake.  If both AR_FLAGS and ARFLAGS are specified, AR_FLAGS should have
+# higher priority because thats what people were doing historically (setting
+# ARFLAGS for automake and AR_FLAGS for libtool).  FIXME: Make the AR_FLAGS
+# variable obsoleted/removed.
+
+test ${AR_FLAGS+y} || AR_FLAGS=${ARFLAGS-cr}
+lt_ar_flags=$AR_FLAGS
+
+
+
+
+
+
+# Make AR_FLAGS overridable by 'make ARFLAGS='.  Don't try to run-time override
+# by AR_FLAGS because that was never working and AR_FLAGS is about to die.
+
 
 
 
@@ -8067,7 +8192,7 @@ esac
 
 if test "$lt_cv_nm_interface" = "MS dumpbin"; then
   # Gets list of data symbols to import.
-  lt_cv_sys_global_symbol_to_import="sed -n -e 's/^I .* \(.*\)$/\1/p'"
+  lt_cv_sys_global_symbol_to_import="$SED -n -e 's/^I .* \(.*\)$/\1/p'"
   # Adjust the below global symbol transforms to fixup imported variables.
   lt_cdecl_hook=" -e 's/^I .* \(.*\)$/extern __declspec(dllimport) char \1;/p'"
   lt_c_name_hook=" -e 's/^I .* \(.*\)$/  {\"\1\", (void *) 0},/p'"
@@ -8085,20 +8210,20 @@ fi
 # Transform an extracted symbol line into a proper C declaration.
 # Some systems (esp. on ia64) link data and code symbols differently,
 # so use this general approach.
-lt_cv_sys_global_symbol_to_cdecl="sed -n"\
+lt_cv_sys_global_symbol_to_cdecl="$SED -n"\
 $lt_cdecl_hook\
 " -e 's/^T .* \(.*\)$/extern int \1();/p'"\
 " -e 's/^$symcode$symcode* .* \(.*\)$/extern char \1;/p'"
 
 # Transform an extracted symbol line into symbol name and symbol address
-lt_cv_sys_global_symbol_to_c_name_address="sed -n"\
+lt_cv_sys_global_symbol_to_c_name_address="$SED -n"\
 $lt_c_name_hook\
 " -e 's/^: \(.*\) .*$/  {\"\1\", (void *) 0},/p'"\
 " -e 's/^$symcode$symcode* .* \(.*\)$/  {\"\1\", (void *) \&\1},/p'"
 
 # Transform an extracted symbol line into symbol name with lib prefix and
 # symbol address.
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n"\
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="$SED -n"\
 $lt_c_name_lib_hook\
 " -e 's/^: \(.*\) .*$/  {\"\1\", (void *) 0},/p'"\
 " -e 's/^$symcode$symcode* .* \(lib.*\)$/  {\"\1\", (void *) \&\1},/p'"\
@@ -8122,7 +8247,7 @@ for ac_symprfx in "" "_"; do
   if test "$lt_cv_nm_interface" = "MS dumpbin"; then
     # Fake it for dumpbin and say T for any non-static function,
     # D for any global variable and I for any imported variable.
-    # Also find C++ and __fastcall symbols from MSVC++,
+    # Also find C++ and __fastcall symbols from MSVC++ or ICC,
     # which start with @ or ?.
     lt_cv_sys_global_symbol_pipe="$AWK '"\
 "     {last_section=section; section=\$ 3};"\
@@ -8140,9 +8265,9 @@ for ac_symprfx in "" "_"; do
 "     s[1]~prfx {split(s[1],t,\"@\"); print f,t[1],substr(t[1],length(prfx))}"\
 "     ' prfx=^$ac_symprfx"
   else
-    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[	 ]\($symcode$symcode*\)[	 ][	 ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+    lt_cv_sys_global_symbol_pipe="$SED -n -e 's/^.*[	 ]\($symcode$symcode*\)[	 ][	 ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
   fi
-  lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
+  lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | $SED '/ __gnu_lto/d'"
 
   # Check to see that the pipe works correctly.
   pipe_works=no
@@ -8345,7 +8470,7 @@ case $with_sysroot in #(
    fi
    ;; #(
  /*)
-   lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
+   lt_sysroot=`echo "$with_sysroot" | $SED -e "$sed_quote_subst"`
    ;; #(
  no|'')
    ;; #(
@@ -8470,7 +8595,7 @@ ia64-*-hpux*)
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *ELF-32*)
 	HPUX_IA64_MODE=32
 	;;
@@ -8491,7 +8616,7 @@ ia64-*-hpux*)
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
     if test yes = "$lt_cv_prog_gnu_ld"; then
-      case `/usr/bin/file conftest.$ac_objext` in
+      case `$FILECMD conftest.$ac_objext` in
 	*32-bit*)
 	  LD="${LD-ld} -melf32bsmip"
 	  ;;
@@ -8503,7 +8628,7 @@ ia64-*-hpux*)
 	;;
       esac
     else
-      case `/usr/bin/file conftest.$ac_objext` in
+      case `$FILECMD conftest.$ac_objext` in
 	*32-bit*)
 	  LD="${LD-ld} -32"
 	  ;;
@@ -8529,7 +8654,7 @@ mips64*-*linux*)
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
     emul=elf
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *32-bit*)
 	emul="${emul}32"
 	;;
@@ -8537,7 +8662,7 @@ mips64*-*linux*)
 	emul="${emul}64"
 	;;
     esac
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *MSB*)
 	emul="${emul}btsmip"
 	;;
@@ -8545,7 +8670,7 @@ mips64*-*linux*)
 	emul="${emul}ltsmip"
 	;;
     esac
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *N32*)
 	emul="${emul}n32"
 	;;
@@ -8569,14 +8694,14 @@ s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-    case `/usr/bin/file conftest.o` in
+    case `$FILECMD conftest.o` in
       *32-bit*)
 	case $host in
 	  x86_64-*kfreebsd*-gnu)
 	    LD="${LD-ld} -m elf_i386_fbsd"
 	    ;;
 	  x86_64-*linux*)
-	    case `/usr/bin/file conftest.o` in
+	    case `$FILECMD conftest.o` in
 	      *x86-64*)
 		LD="${LD-ld} -m elf32_x86_64"
 		;;
@@ -8684,7 +8809,7 @@ printf "%s\n" "$lt_cv_cc_needs_belf" >&6; }
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-    case `/usr/bin/file conftest.o` in
+    case `$FILECMD conftest.o` in
     *64-bit*)
       case $lt_cv_prog_gnu_ld in
       yes*)
@@ -9467,8 +9592,8 @@ int forced_loaded() { return 2;}
 _LT_EOF
       echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5
       $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5
-      echo "$AR cru libconftest.a conftest.o" >&5
-      $AR cru libconftest.a conftest.o 2>&5
+      echo "$AR $AR_FLAGS libconftest.a conftest.o" >&5
+      $AR $AR_FLAGS libconftest.a conftest.o 2>&5
       echo "$RANLIB libconftest.a" >&5
       $RANLIB libconftest.a 2>&5
       cat > conftest.c << _LT_EOF
@@ -9495,17 +9620,12 @@ printf "%s\n" "$lt_cv_ld_force_load" >&6; }
       _lt_dar_allow_undefined='$wl-undefined ${wl}suppress' ;;
     darwin1.*)
       _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
-    darwin*) # darwin 5.x on
-      # if running on 10.5 or later, the deployment target defaults
-      # to the OS version, if on x86, and 10.4, the deployment
-      # target defaults to 10.4. Don't you love it?
-      case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
-	10.0,*86*-darwin8*|10.0,*-darwin[91]*)
-	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
-	10.[012][,.]*)
-	  _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
-	10.*)
-	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
+    darwin*)
+      case $MACOSX_DEPLOYMENT_TARGET,$host in
+        10.[012],*|,*powerpc*-darwin[5-8]*)
+          _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
+        *)
+          _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
       esac
     ;;
   esac
@@ -9903,8 +10023,8 @@ esac
 ofile=libtool
 can_build_shared=yes
 
-# All known linkers require a '.a' archive for static linking (except MSVC,
-# which needs '.lib').
+# All known linkers require a '.a' archive for static linking (except MSVC and
+# ICC, which need '.lib').
 libext=a
 
 with_gnu_ld=$lt_cv_prog_gnu_ld
@@ -10416,7 +10536,7 @@ lt_prog_compiler_static=
 	lt_prog_compiler_static='-qstaticlink'
 	;;
       *)
-	case `$CC -V 2>&1 | sed 5q` in
+	case `$CC -V 2>&1 | $SED 5q` in
 	*Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [1-7].* | *Sun*Fortran*\ 8.[0-3]*)
 	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
 	  lt_prog_compiler_pic='-KPIC'
@@ -10839,15 +10959,15 @@ printf %s "checking whether the $compiler linker ($LD) supports shared libraries
 
   case $host_os in
   cygwin* | mingw* | pw32* | cegcc*)
-    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # FIXME: the MSVC++ and ICC port hasn't been tested in a loooong time
     # When not using gcc, we currently assume that we are using
-    # Microsoft Visual C++.
+    # Microsoft Visual C++ or Intel C++ Compiler.
     if test yes != "$GCC"; then
       with_gnu_ld=no
     fi
     ;;
   interix*)
-    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    # we just hope/assume this is gcc and not c89 (= MSVC++ or ICC)
     with_gnu_ld=yes
     ;;
   openbsd* | bitrig*)
@@ -10899,7 +11019,7 @@ printf %s "checking whether the $compiler linker ($LD) supports shared libraries
       whole_archive_flag_spec=
     fi
     supports_anon_versioning=no
-    case `$LD -v | $SED -e 's/(^)\+)\s\+//' 2>&1` in
+    case `$LD -v | $SED -e 's/([^)]\+)\s\+//' 2>&1` in
       *GNU\ gold*) supports_anon_versioning=yes ;;
       *\ [01].* | *\ 2.[0-9].* | *\ 2.10.*) ;; # catch versions < 2.11
       *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
@@ -11011,6 +11131,7 @@ _LT_EOF
 	emximp -o $lib $output_objdir/$libname.def'
       old_archive_From_new_cmds='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def'
       enable_shared_with_static_runtimes=yes
+      file_list_spec='@'
       ;;
 
     interix[3-9]*)
@@ -11025,7 +11146,7 @@ _LT_EOF
       # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
       # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
       archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
-      archive_expsym_cmds='sed "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      archive_expsym_cmds='$SED "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
       ;;
 
     gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
@@ -11068,7 +11189,7 @@ _LT_EOF
 	  compiler_needs_object=yes
 	  ;;
 	esac
-	case `$CC -V 2>&1 | sed 5q` in
+	case `$CC -V 2>&1 | $SED 5q` in
 	*Sun\ C*)			# Sun C 5.9
 	  whole_archive_flag_spec='$wl--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive'
 	  compiler_needs_object=yes
@@ -11080,7 +11201,7 @@ _LT_EOF
 
         if test yes = "$supports_anon_versioning"; then
           archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
-            cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+            cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
             echo "local: *; };" >> $output_objdir/$libname.ver~
             $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib'
         fi
@@ -11096,7 +11217,7 @@ _LT_EOF
 	  archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib'
 	  if test yes = "$supports_anon_versioning"; then
 	    archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
-              cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+              cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
               echo "local: *; };" >> $output_objdir/$libname.ver~
               $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
 	  fi
@@ -11228,7 +11349,7 @@ _LT_EOF
 	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
 	  export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols'
 	else
-	  export_symbols_cmds='`func_echo_all $NM | $SED -e '\''s/B\([^B]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && (substr(\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
+	  export_symbols_cmds='`func_echo_all $NM | $SED -e '\''s/B\([^B]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && (substr(\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
 	fi
 	aix_use_runtimelinking=no
 
@@ -11499,12 +11620,12 @@ fi
 
     cygwin* | mingw* | pw32* | cegcc*)
       # When not using gcc, we currently assume that we are using
-      # Microsoft Visual C++.
+      # Microsoft Visual C++ or Intel C++ Compiler.
       # hardcode_libdir_flag_spec is actually meaningless, as there is
       # no search path for DLLs.
       case $cc_basename in
-      cl*)
-	# Native MSVC
+      cl* | icl*)
+	# Native MSVC or ICC
 	hardcode_libdir_flag_spec=' '
 	allow_undefined_flag=unsupported
 	always_export_symbols=yes
@@ -11545,7 +11666,7 @@ fi
           fi'
 	;;
       *)
-	# Assume MSVC wrapper
+	# Assume MSVC and ICC wrapper
 	hardcode_libdir_flag_spec=' '
 	allow_undefined_flag=unsupported
 	# Tell ltmain to make .lib files, not .a files.
@@ -11586,8 +11707,8 @@ fi
     output_verbose_link_cmd=func_echo_all
     archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dsymutil"
     module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dsymutil"
-    archive_expsym_cmds="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil"
-    module_expsym_cmds="sed -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil"
+    archive_expsym_cmds="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil"
+    module_expsym_cmds="$SED -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil"
 
   else
   ld_shlibs=no
@@ -11621,7 +11742,7 @@ fi
       ;;
 
     # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
-    freebsd* | dragonfly*)
+    freebsd* | dragonfly* | midnightbsd*)
       archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
       hardcode_libdir_flag_spec='-R$libdir'
       hardcode_direct=yes
@@ -11872,6 +11993,7 @@ printf "%s\n" "$lt_cv_irix_exported_symbol" >&6; }
 	emximp -o $lib $output_objdir/$libname.def'
       old_archive_From_new_cmds='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def'
       enable_shared_with_static_runtimes=yes
+      file_list_spec='@'
       ;;
 
     osf3*)
@@ -12564,7 +12686,7 @@ cygwin* | mingw* | pw32* | cegcc*)
     case $host_os in
     cygwin*)
       # Cygwin DLLs use 'cyg' prefix rather than 'lib'
-      soname_spec='`echo $libname | sed -e 's/^lib/cyg/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
+      soname_spec='`echo $libname | $SED -e 's/^lib/cyg/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
 
       sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"
       ;;
@@ -12574,14 +12696,14 @@ cygwin* | mingw* | pw32* | cegcc*)
       ;;
     pw32*)
       # pw32 DLLs use 'pw' prefix rather than 'lib'
-      library_names_spec='`echo $libname | sed -e 's/^lib/pw/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
+      library_names_spec='`echo $libname | $SED -e 's/^lib/pw/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
       ;;
     esac
     dynamic_linker='Win32 ld.exe'
     ;;
 
-  *,cl*)
-    # Native MSVC
+  *,cl* | *,icl*)
+    # Native MSVC or ICC
     libname_spec='$name'
     soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
     library_names_spec='$libname.dll.lib'
@@ -12600,7 +12722,7 @@ cygwin* | mingw* | pw32* | cegcc*)
       done
       IFS=$lt_save_ifs
       # Convert to MSYS style.
-      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
+      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
       ;;
     cygwin*)
       # Convert to unix form, then to dos form, then back to unix form
@@ -12637,7 +12759,7 @@ cygwin* | mingw* | pw32* | cegcc*)
     ;;
 
   *)
-    # Assume MSVC wrapper
+    # Assume MSVC and ICC wrapper
     library_names_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext $libname.lib'
     dynamic_linker='Win32 ld.exe'
     ;;
@@ -12670,7 +12792,7 @@ dgux*)
   shlibpath_var=LD_LIBRARY_PATH
   ;;
 
-freebsd* | dragonfly*)
+freebsd* | dragonfly* | midnightbsd*)
   # DragonFly does not have aout.  When/if they implement a new
   # versioning mechanism, adjust this.
   if test -x /usr/bin/objformat; then
@@ -13823,30 +13945,41 @@ striplib=
 old_striplib=
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5
 printf %s "checking whether stripping libraries is possible... " >&6; }
-if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
-  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
-  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
+if test -z "$STRIP"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 else
-# FIXME - insert some real tests, host_os isn't really good enough
-  case $host_os in
-  darwin*)
-    if test -n "$STRIP"; then
+  if $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+    old_striplib="$STRIP --strip-debug"
+    striplib="$STRIP --strip-unneeded"
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+  else
+    case $host_os in
+    darwin*)
+      # FIXME - insert some real tests, host_os isn't really good enough
       striplib="$STRIP -x"
       old_striplib="$STRIP -S"
       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
-    else
-      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+      ;;
+    freebsd*)
+      if $STRIP -V 2>&1 | $GREP "elftoolchain" >/dev/null; then
+        old_striplib="$STRIP --strip-debug"
+        striplib="$STRIP --strip-unneeded"
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+      else
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
-    fi
-    ;;
-  *)
-    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+      fi
+      ;;
+    *)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
-    ;;
-  esac
+      ;;
+    esac
+  fi
 fi
 
 
@@ -14616,8 +14749,8 @@ fi
 
       cygwin* | mingw* | pw32* | cegcc*)
 	case $GXX,$cc_basename in
-	,cl* | no,cl*)
-	  # Native MSVC
+	,cl* | no,cl* | ,icl* | no,icl*)
+	  # Native MSVC or ICC
 	  # hardcode_libdir_flag_spec is actually meaningless, as there is
 	  # no search path for DLLs.
 	  hardcode_libdir_flag_spec_CXX=' '
@@ -14708,11 +14841,11 @@ fi
     output_verbose_link_cmd=func_echo_all
     archive_cmds_CXX="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dsymutil"
     module_cmds_CXX="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dsymutil"
-    archive_expsym_cmds_CXX="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil"
-    module_expsym_cmds_CXX="sed -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil"
+    archive_expsym_cmds_CXX="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil"
+    module_expsym_cmds_CXX="$SED -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil"
        if test yes != "$lt_cv_apple_cc_single_mod"; then
       archive_cmds_CXX="\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dsymutil"
-      archive_expsym_cmds_CXX="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dar_export_syms$_lt_dsymutil"
+      archive_expsym_cmds_CXX="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dar_export_syms$_lt_dsymutil"
     fi
 
   else
@@ -14747,6 +14880,7 @@ fi
 	  emximp -o $lib $output_objdir/$libname.def'
 	old_archive_From_new_cmds_CXX='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def'
 	enable_shared_with_static_runtimes_CXX=yes
+	file_list_spec_CXX='@'
 	;;
 
       dgux*)
@@ -14777,7 +14911,7 @@ fi
         archive_cmds_need_lc_CXX=no
         ;;
 
-      freebsd* | dragonfly*)
+      freebsd* | dragonfly* | midnightbsd*)
         # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
         # conventions
         ld_shlibs_CXX=yes
@@ -14914,7 +15048,7 @@ fi
 	# 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
 	# time.  Moving up from 0x10000000 also allows more sbrk(2) space.
 	archive_cmds_CXX='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
-	archive_expsym_cmds_CXX='sed "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	archive_expsym_cmds_CXX='$SED "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
 	;;
       irix5* | irix6*)
         case $cc_basename in
@@ -15054,13 +15188,13 @@ fi
 	    archive_cmds_CXX='$CC -qmkshrobj $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib'
 	    if test yes = "$supports_anon_versioning"; then
 	      archive_expsym_cmds_CXX='echo "{ global:" > $output_objdir/$libname.ver~
-                cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+                cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
                 echo "local: *; };" >> $output_objdir/$libname.ver~
                 $CC -qmkshrobj $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib'
 	    fi
 	    ;;
 	  *)
-	    case `$CC -V 2>&1 | sed 5q` in
+	    case `$CC -V 2>&1 | $SED 5q` in
 	    *Sun\ C*)
 	      # Sun C++ 5.9
 	      no_undefined_flag_CXX=' -zdefs'
@@ -15717,7 +15851,7 @@ lt_prog_compiler_static_CXX=
 	    ;;
 	esac
 	;;
-      freebsd* | dragonfly*)
+      freebsd* | dragonfly* | midnightbsd*)
 	# FreeBSD uses GNU C++
 	;;
       hpux9* | hpux10* | hpux11*)
@@ -15800,7 +15934,7 @@ lt_prog_compiler_static_CXX=
 	    lt_prog_compiler_static_CXX='-qstaticlink'
 	    ;;
 	  *)
-	    case `$CC -V 2>&1 | sed 5q` in
+	    case `$CC -V 2>&1 | $SED 5q` in
 	    *Sun\ C*)
 	      # Sun C++ 5.9
 	      lt_prog_compiler_pic_CXX='-KPIC'
@@ -16187,7 +16321,7 @@ printf %s "checking whether the $compiler linker ($LD) supports shared libraries
     if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
       export_symbols_cmds_CXX='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols'
     else
-      export_symbols_cmds_CXX='`func_echo_all $NM | $SED -e '\''s/B\([^B]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && (substr(\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
+      export_symbols_cmds_CXX='`func_echo_all $NM | $SED -e '\''s/B\([^B]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && (substr(\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
     fi
     ;;
   pw32*)
@@ -16195,7 +16329,7 @@ printf %s "checking whether the $compiler linker ($LD) supports shared libraries
     ;;
   cygwin* | mingw* | cegcc*)
     case $cc_basename in
-    cl*)
+    cl* | icl*)
       exclude_expsyms_CXX='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
       ;;
     *)
@@ -16543,7 +16677,7 @@ cygwin* | mingw* | pw32* | cegcc*)
     case $host_os in
     cygwin*)
       # Cygwin DLLs use 'cyg' prefix rather than 'lib'
-      soname_spec='`echo $libname | sed -e 's/^lib/cyg/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
+      soname_spec='`echo $libname | $SED -e 's/^lib/cyg/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
 
       ;;
     mingw* | cegcc*)
@@ -16552,14 +16686,14 @@ cygwin* | mingw* | pw32* | cegcc*)
       ;;
     pw32*)
       # pw32 DLLs use 'pw' prefix rather than 'lib'
-      library_names_spec='`echo $libname | sed -e 's/^lib/pw/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
+      library_names_spec='`echo $libname | $SED -e 's/^lib/pw/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
       ;;
     esac
     dynamic_linker='Win32 ld.exe'
     ;;
 
-  *,cl*)
-    # Native MSVC
+  *,cl* | *,icl*)
+    # Native MSVC or ICC
     libname_spec='$name'
     soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext'
     library_names_spec='$libname.dll.lib'
@@ -16578,7 +16712,7 @@ cygwin* | mingw* | pw32* | cegcc*)
       done
       IFS=$lt_save_ifs
       # Convert to MSYS style.
-      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
+      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
       ;;
     cygwin*)
       # Convert to unix form, then to dos form, then back to unix form
@@ -16615,7 +16749,7 @@ cygwin* | mingw* | pw32* | cegcc*)
     ;;
 
   *)
-    # Assume MSVC wrapper
+    # Assume MSVC and ICC wrapper
     library_names_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext $libname.lib'
     dynamic_linker='Win32 ld.exe'
     ;;
@@ -16647,7 +16781,7 @@ dgux*)
   shlibpath_var=LD_LIBRARY_PATH
   ;;
 
-freebsd* | dragonfly*)
+freebsd* | dragonfly* | midnightbsd*)
   # DragonFly does not have aout.  When/if they implement a new
   # versioning mechanism, adjust this.
   if test -x /usr/bin/objformat; then
@@ -18635,7 +18769,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libHX $as_me 4.17, which was
+This file was extended by libHX $as_me 4.19, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -18703,7 +18837,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-libHX config.status 4.17
+libHX config.status 4.19
 configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"
 
@@ -18866,6 +19000,7 @@ lt_cv_to_host_file_cmd='`$ECHO "$lt_cv_to_host_file_cmd" | $SED "$delay_single_q
 lt_cv_to_tool_file_cmd='`$ECHO "$lt_cv_to_tool_file_cmd" | $SED "$delay_single_quote_subst"`'
 reload_flag='`$ECHO "$reload_flag" | $SED "$delay_single_quote_subst"`'
 reload_cmds='`$ECHO "$reload_cmds" | $SED "$delay_single_quote_subst"`'
+FILECMD='`$ECHO "$FILECMD" | $SED "$delay_single_quote_subst"`'
 OBJDUMP='`$ECHO "$OBJDUMP" | $SED "$delay_single_quote_subst"`'
 deplibs_check_method='`$ECHO "$deplibs_check_method" | $SED "$delay_single_quote_subst"`'
 file_magic_cmd='`$ECHO "$file_magic_cmd" | $SED "$delay_single_quote_subst"`'
@@ -18874,6 +19009,7 @@ want_nocaseglob='`$ECHO "$want_nocaseglob" | $SED "$delay_single_quote_subst"`'
 DLLTOOL='`$ECHO "$DLLTOOL" | $SED "$delay_single_quote_subst"`'
 sharedlib_from_linklib_cmd='`$ECHO "$sharedlib_from_linklib_cmd" | $SED "$delay_single_quote_subst"`'
 AR='`$ECHO "$AR" | $SED "$delay_single_quote_subst"`'
+lt_ar_flags='`$ECHO "$lt_ar_flags" | $SED "$delay_single_quote_subst"`'
 AR_FLAGS='`$ECHO "$AR_FLAGS" | $SED "$delay_single_quote_subst"`'
 archiver_list_spec='`$ECHO "$archiver_list_spec" | $SED "$delay_single_quote_subst"`'
 STRIP='`$ECHO "$STRIP" | $SED "$delay_single_quote_subst"`'
@@ -19048,6 +19184,7 @@ LN_S \
 lt_SP2NL \
 lt_NL2SP \
 reload_flag \
+FILECMD \
 OBJDUMP \
 deplibs_check_method \
 file_magic_cmd \
@@ -19056,7 +19193,6 @@ want_nocaseglob \
 DLLTOOL \
 sharedlib_from_linklib_cmd \
 AR \
-AR_FLAGS \
 archiver_list_spec \
 STRIP \
 RANLIB \
@@ -20045,6 +20181,9 @@ to_host_file_cmd=$lt_cv_to_host_file_cmd
 # convert \$build files to toolchain format.
 to_tool_file_cmd=$lt_cv_to_tool_file_cmd
 
+# A file(cmd) program that detects file types.
+FILECMD=$lt_FILECMD
+
 # An object symbol dumper.
 OBJDUMP=$lt_OBJDUMP
 
@@ -20069,8 +20208,11 @@ sharedlib_from_linklib_cmd=$lt_sharedlib_from_linklib_cmd
 # The archiver.
 AR=$lt_AR
 
+# Flags to create an archive (by configure).
+lt_ar_flags=$lt_ar_flags
+
 # Flags to create an archive.
-AR_FLAGS=$lt_AR_FLAGS
+AR_FLAGS=\${ARFLAGS-"\$lt_ar_flags"}
 
 # How to feed a file listing to the archiver.
 archiver_list_spec=$lt_archiver_list_spec
@@ -20460,7 +20602,7 @@ ltmain=$ac_aux_dir/ltmain.sh
   # if finds mixed CR/LF and LF-only lines.  Since sed operates in
   # text mode, it properly converts lines to CR/LF.  This bash problem
   # is reportedly fixed, but why not run on old versions too?
-  sed '$q' "$ltmain" >> "$cfgfile" \
+  $SED '$q' "$ltmain" >> "$cfgfile" \
      || (rm -f "$cfgfile"; exit 1)
 
    mv -f "$cfgfile" "$ofile" ||
diff --git a/configure.ac b/configure.ac
index bb658ea..a41566a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([libHX], [4.17])
+AC_INIT([libHX], [4.19])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
diff --git a/doc/api.rst b/doc/api.rst
index a645fdd..84feaa6 100644
--- a/doc/api.rst
+++ b/doc/api.rst
@@ -3,12 +3,13 @@ Function reference
 
 * R column: Recommend version number to use in ``PKG_CONFIG_CHECK`` in
   projects using libHX. Includes important bugfixes.
-* M column: Lowest possible version with the same function signature.
-* F column: Function first seen in version, possibly with different API.
+* M column: Lowest possible version with the same ABI (minus cv qualification).
+* F column: First version that the function name was in use.
 
 ======  ======  ======  ========================================
 RMV     MinVer  FirstA  Name
 ======  ======  ======  ========================================
+4.18    4.18    4.18    HX_getopt5
 4.16    4.16    4.16    HX_strtoull_nsec
 4.15    4.15    4.15    HX_flpr
 4.15    4.15    4.15    HX_flprf
diff --git a/doc/changelog.rst b/doc/changelog.rst
index 2e0cf0f..8903a72 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -1,3 +1,31 @@
+v4.19 (2023-12-01)
+==================
+
+Fixes:
+
+* string: fixed HX_strtoull_unit with negative fractions producing 0
+  sometimes
+* opt: fix HX_getopt losing argv on HXOPT_KEEP_ARGV
+
+
+v4.18 (2023-11-27)
+==================
+
+Enhancements:
+
+* opt: new HX_getopt5 API for the parser with untangled in and out variables
+
+Fixes:
+
+* string: HX_strtoull_units handles negative values now (like strtoull)
+* string: HX_strtoull_units & HX_strtoull_(n)sec now set errno=ERANGE for
+  nonrepresentable results
+
+Behavioral changes:
+
+* string: HX_strtoull_sec rejects unitless numbers now
+
+
 v4.17 (2023-11-12)
 ==================
 
diff --git a/doc/generator.cpp b/doc/generator.cpp
index 6c64f80..0889cfd 100644
--- a/doc/generator.cpp
+++ b/doc/generator.cpp
@@ -35,7 +35,7 @@ class rdgen {
         fi<rdgen> end(void) { return fi<rdgen>(*this); };
 };
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
         for (auto x : rdgen(argc))
                 printf("%d\n", x);
diff --git a/doc/inline_list.rst b/doc/inline_list.rst
index e60e89f..3e4cb7c 100644
--- a/doc/inline_list.rst
+++ b/doc/inline_list.rst
@@ -195,7 +195,7 @@ HXdeque:
 
 .. code-block:: c
 
-	int main(int argc, const char **argv)
+	int main(int argc, char **argv)
 	{
 		struct HXdeque *dq = HXdeque_init();
 		while (--argc)
@@ -212,7 +212,7 @@ HXdeque:
 		char *data;
 	};
 
-	int main(int main, const char **argv)
+	int main(int main, char **argv)
 	{
 		HXLIST_HEAD(lh);
 		while (--argc) {
diff --git a/doc/option_parsing.rst b/doc/option_parsing.rst
index 9205c2b..2dced82 100644
--- a/doc/option_parsing.rst
+++ b/doc/option_parsing.rst
@@ -2,22 +2,22 @@
 Option parsing
 ==============
 
-libHX uses a table-based approach like libpopt[#f3]. It provides for both long
-and short options and the different styles associated with them, such as
-absence or presence of an equals sign for long options (``--foo=bar`` and ``--foo
-bar``), bundling (writing ``-abc`` for non-argument taking options ``-a -b -c``),
-squashing (writing ``-fbar`` for an argument-requiring option ``-f bar``). The “lone
-dash” that is often used to indicate standard input or standard output, is
-correctly handled[#f4], as in ``-f -``.
-
-.. [#f3] The alternative would be an iterative, open-coded approach like
-         ``getopt``(3) requires.
-
-.. [#f4] popt failed to do this for a long time.
-
-A table-based approach allows for the parser to run as one unit, quite unlike
-the open-coded ``getopt``(3) loop where the function returns for every argument
-it parsed and needs to be called repeatedly.
+Characteristics:
+
+* short options:
+  * bundling of argument-free options (``-a -b -c`` -> ``-abc``)
+  * squashing of argument-requiring options (``-a foo`` -> ``-afoo``)
+* GNU long options with space or equals sign (``--foo bar``, ``--foo=bar``)
+* proper recognition of the lone dash (often used to indicate stdin/stdout)
+* recognition of the double dash as option list terminator
+* offers POSIX strictness where the option list terminates at the first
+  non-option argument
+* option passthrough
+* the parse function is one-shot; there is no context object (like popt),
+  no global state (like getopt) and no ``while`` loop (either of the two others)
+* exclusively uses an option table
+* value storing is performed through pointers in the option table
+* or user-provided callbacks can be invoked per option
 
 
 Synopsis
@@ -37,7 +37,7 @@ Synopsis
 		const char *help, *htyp;
 	};
 
-	int HX_getopt(const struct HXoption *options_table, int *argc, const char ***argv, unsigned int flags);
+	int HX_getopt5(const struct HXoption *options_table, char **argv, int *new_argc, char ***new_argv, unsigned int flags);
 
 The various fields of ``struct HXoption`` are:
 
@@ -51,10 +51,10 @@ The various fields of ``struct HXoption`` are:
 
 ``type``
 	The type of the entry, essentially denoting the type of the target
-	variable.
+	variable (``ptr``).
 
 ``val``
-	An integer value to be stored into ``*(int *)ptr`` when the option type
+	An integer value to be stored into ``*(int *)ptr`` if the option type
 	is ``HXTYPE_IVAL``.
 
 ``ptr``
@@ -80,18 +80,14 @@ The various fields of ``struct HXoption`` are:
 	String containing a keyword to aid the user in understanding the
 	available options during dump. See examples.
 
-Due to the amount of fields, it is advised to use C99 named initializers to
-populate a struct, as they allow to omit unspecified fields, and assume no
+Due to the amount of fields, it is advised to use C99/C++20 named initializers
+to populate a struct, as they allow to omit unspecified fields, and assume no
 specific order of the members:
 
 .. code-block:: c
 
 	struct HXoption e = {.sh = 'f', .help = "Force"};
 
-It is a sad fact that C++ has not gotten around to implement named initializers
-as of C++17. It is possible to put the option parsing code into a separate C
-source file that can then be compiled in C99 rather than C++ mode.
-
 
 Type map
 ========
@@ -206,13 +202,13 @@ specified, but may be implemented on behalf of the user via a callback.
 Flags
 =====
 
-Flags can be combined into the type parameter by OR'ing them. It is valid to
+Flags can be combined into the type parameter by OR-ing them. It is valid to
 not specify any flags at all, but most flags collide with one another.
 
 ``HXOPT_INC``
 	Perform an increment on the memory location specified by the
-	``*(int *)ptr`` pointer. Make sure the referenced variable is
-	initialized beforehand!
+	``*(int *)ptr`` pointer. The referenced variable must be
+	initialized.
 
 ``HXOPT_DEC``
 	Perform a decrement on the pointee. Same requirements as ``HXOPT_INC``.
@@ -271,19 +267,22 @@ Invoking the parser
 
 .. code-block:: c
 
-	int HX_getopt(const struct HXoption *options_table, int *argc, const char ***argv, unsigned int flags);HX_getopt
+	int HX_getopt5(const struct HXoption *options_table, char **argv, int *new_argc, char **new_argv, unsigned int flags);
+	int HX_getopt(const struct HXoption *options_table, int *argc, char ***argv, unsigned int flags);
 
-``HX_getopt`` is the actual parsing function. It takes the option table, and a
-pointer to your argc and argv variables that you get from the main function.
-The parser will, by default, consume all options and their arguments, similar
-to Perl's ``Getopt::Long`` module. ``*argv`` is then updated to point to a new
-array of strings (to be deallocated with ``HX_zvecfree``) and ``*argc`` is
-updated accordingly. Additional flags can control the exact behavior of
-``HX_getopt``:
+``HX_getopt5`` is the central parsing function. ``options_table`` specifies
+the options that the parser will recognize. ``argv`` must be a NULL-terminated
+array of C strings.
+
+If ``new_argv`` is non-NULL, the leftover arguments will be output as a new
+string vector on success. (That array can be freed with ``HX_zvecfree``). If
+``new_argc`` is non-NULL, the argument count for new_argv will be output too.
+
+The ``flags`` argument control the general behavior of ``HX_getopt``:
 
 ``HXOPT_PTHRU``
-	“Passthrough mode”. Any unknown options are not “eaten” and are instead
-	passed back into the resulting argv array.
+	“Passthrough mode”. Any unknown options are passed through into
+	``new_argv``.
 
 ``HXOPT_QUIET``
 	Do not print any diagnostics when encountering errors in the user's
@@ -302,7 +301,7 @@ updated accordingly. Additional flags can control the exact behavior of
 	implicit when the environment variable ``POSIXLY_CORRECT`` is set.
 
 ``HXOPT_KEEP_ARGV``
-	Do not modify ``argc`` and ``argv`` at all.
+	Do not set ``*new_argc`` and ``*new_argv`` at all.
 
 The return value can be one of the following:
 
@@ -328,6 +327,15 @@ The return value can be one of the following:
 negative non-zero
 	Failure on behalf of lower-level calls; errno.
 
+``HX_getopt`` is an older API where ``argv`` is both used for input and output.
+It recognizes additional flags/has additional behavior:
+
+``HXOPT_KEEP_ARGV``
+	``argc`` and ``argv`` is not updated.
+
+``HXOPT_DESTROY_OLD``
+	Call ``HX_zvecfree`` on ``argv`` before updating it.
+
 
 Pitfalls
 ========
@@ -341,33 +349,28 @@ The following is an example of a possible pitfall regarding ``HXTYPE_STRDQ``:
 
 	static struct HXdeque *dq;
 
-	static bool get_options(int *argc, const char ***argv)
+	int main(int argc, char **argv)
 	{
+		dq = HXdeque_init();
 		static const struct HXoption options_table[] = {
 			{.sh = 'N', .type = HXTYPE_STRDQ, .ptr = dq,
 			 .help = "Add name"},
 			HXOPT_TABLEEND,
 		};
-		return HX_getopt(options_table, argc, argv, HXOPT_USAGEONERR) ==
-		       HXOPT_ERR_SUCCESS;
-	}
-
-	int main(int argc, const char **argv)
-	{
-		dq = HXdeque_init();
-		get_options(&argc, &argv);
-		return 0;
+		if (HX_getopt5(options_table, *argv, &argc, &argv,
+		    HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+			return EXIT_FAILURE;
+		/* ... */
+		HX_zvecfree(argv);
+		return EXIT_SUCCESS;
 	}
 
 The problem here is that ``options_table`` is, due to the static keyword,
 initialized at compile-time when ``dq`` is still ``NULL``. To counter this
-problem and have it doing the right thing, you must remove the static qualifier
-on the options table when used with ``HXTYPE_STRDQ``, so that it will be
-evaluated when it is first executed.
+problem and have it doing the right thing, the ``static`` qualifier on the
+options table must be removed, so that the table is built when that line
+executes.
 
-It was not deemed worthwhile to have ``HXTYPE_STRDQ`` take an indirect
-``HXdeque`` (``struct HXdeque **``) instead just to bypass this issue. (Live
-with it.)
 
 Limitations
 -----------
@@ -409,7 +412,7 @@ GNU getopt sample.[#f5]
 	#include <stdilb.h>
 	#include <libHX/option.h>
 
-	int main(int argc, const char **argv)
+	int main(int argc, char **argv)
 	{
 		int aflag = 0;
 		int bflag = 0;
@@ -423,9 +426,8 @@ GNU getopt sample.[#f5]
 			HXOPT_TABLEEND,
 		};
 
-		if (HX_getopt(options_table, &argc, &argv, HXOPT_USAGEONERR) !=
-		    HXOPT_ERR_SUCCESS)
-
+		if (HX_getopt5(options_table, argv, &argc, &argv,
+		    HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
 			return EXIT_FAILURE;
 
 		printf("aflag = %d, bflag = %d, cvalue = %s\n",
@@ -434,6 +436,7 @@ GNU getopt sample.[#f5]
 		while (*++argv != NULL)
 			printf("Non-option argument %s\n", *argv);
 
+		HX_zvecfree(argv);
 		return EXIT_SUCCESS;
 	}
 
@@ -534,42 +537,43 @@ the callback function in ``cb``.
 		{.sh = 'n', .type = HXTYPE_STRING, .cb = fixed_point_parse,
 		 .uptr = &number, .help = "Do this or that",
 		HXOPT_TABLEEND,
-
 	};
 
 Chained argument processing
 ---------------------------
 
 On the first run, only ``--cake`` and ``--fruit`` is considered, which is then
-used to select the next set of accepted options. Note that
-``HXOPT_DESTROY_OLD`` is used here, which causes the ``argv`` that is produced
-by the first invocation of ``HX_getopt`` in the ``get_options`` function to be
-freed as it gets replaced by a new argv again by ``HX_getopt`` in
-``get_cakes``/``get_fruit``. ``HXOPT_DESTROY_OLD`` is however not specified in
-the first invocation, because the initial argv resides on the stack and cannot
-be freed.
+used to select the next set of accepted options.
 
 .. code-block:: c
 
-	static bool get_cakes(int *argc, const char ***argv)
+	static int get_cakes(int *argc, char ***argv)
 	{
-		struct HXoption option_table[] = {
+		struct HXoption cake_table[] = {
 			...
 		};
-		return HX_getopt(cake_table, argc, argv,
-		       HXOPT_USAGEONERR | HXOPT_DESTROY_OLD) == HXOPT_ERR_SUCCESS;
+		if (HX_getopt5(cake_table, *argv, &argc, &argv,
+		    HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+			return EXIT_FAILURE;
+		/* ... */
+		HX_zvecfree(argv);
+		return EXIT_SUCCESS;
 	}
 
-	static bool get_fruit(int *argc, const char ***argv)
+	static int fruit_main(int argc, char **argv)
 	{
 		struct HXoption fruit_table[] = {
 			...
 		};
-		return HX_getopt(fruit_table, argc, argv,
-		       HXOPT_USAGEONERR | HXOPT_DESTROY_OLD) == HXOPT_ERR_SUCCESS;
+		if (HX_getopt5(fruit_table, *argv, &argc, &argv,
+		    HXOPT_PTHRU) != HXOPT_ERR_SUCCESS)
+			return EXIT_FAILURE;
+		/* ... */
+		HX_zvecfree(argv);
+		return EXIT_SUCCESS;
 	}
 
-	static bool get_options(int *argc, const char ***argv)
+	int main(int argc, char **argv)
 	{
 		int cake = 0, fruit = 0;
 		struct HXoption option_table[] = {
@@ -577,11 +581,10 @@ be freed.
 			{.ln = "fruit", .type = HXTYPE_NONE, .ptr = &fruit},
 			HXOPT_TABLEEND,
 		};
-		if (HX_getopt(option_table, argc, argv, HXOPT_PTHRU) != HXOPT_ERR_SUCCESS)
-			return false;
-		if (cake)
-			return get_cakes(argc, argv);
-		else if (fruit)
-			return get_fruit(argc, argv);
-		return false;
+		if (HX_getopt5(option_table, *argv, &argc, &argv,
+		    HXOPT_PTHRU) != HXOPT_ERR_SUCCESS)
+			return EXIT_FAILURE;
+		int ret = cake ? cake_main(argc, argv) : fruit_main(argc, argv);
+		HX_zvecfree(argv);
+		return EXIT_FAILURE;
 	}
diff --git a/doc/string_ops.rst b/doc/string_ops.rst
index d818d2d..91da2f6 100644
--- a/doc/string_ops.rst
+++ b/doc/string_ops.rst
@@ -64,7 +64,7 @@ Extraction
 
 .. code-block:: c
 
-	int main(int argc, const char **argv)
+	int main(int argc, char **argv)
 	{
 		if (foo())
 			fprintf(stderr, "%s: Special condition occurred.\n",
diff --git a/include/Makefile.am b/include/Makefile.am
index dd74f9a..62ad527 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -1,6 +1,6 @@
 # -*- Makefile -*-
 
-nobase_include_HEADERS = libHX.h \
+nobase_include_HEADERS = libHX.h libHX/cast.h \
 	libHX/ctype_helper.h libHX/defs.h libHX/deque.h libHX/init.h \
 	libHX/intdiff.hpp libHX/io.h libHX/list.h \
 	libHX/map.h libHX/misc.h libHX/option.h libHX/proc.h libHX/socket.h libHX/string.h \
diff --git a/include/Makefile.in b/include/Makefile.in
index 40582cf..8e02ba6 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -202,6 +202,7 @@ EGREP = @EGREP@
 ETAGS = @ETAGS@
 EXEEXT = @EXEEXT@
 FGREP = @FGREP@
+FILECMD = @FILECMD@
 GREP = @GREP@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
@@ -302,7 +303,7 @@ target_alias = @target_alias@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
-nobase_include_HEADERS = libHX.h \
+nobase_include_HEADERS = libHX.h libHX/cast.h \
 	libHX/ctype_helper.h libHX/defs.h libHX/deque.h libHX/init.h \
 	libHX/intdiff.hpp libHX/io.h libHX/list.h \
 	libHX/map.h libHX/misc.h libHX/option.h libHX/proc.h libHX/socket.h libHX/string.h \
diff --git a/include/libHX/cast.h b/include/libHX/cast.h
new file mode 100644
index 0000000..cb2cba5
--- /dev/null
+++ b/include/libHX/cast.h
@@ -0,0 +1,129 @@
+#ifndef _LIBHX_CAST_H
+#define _LIBHX_CAST_H 1
+
+#ifdef __cplusplus
+#	ifndef const_cast
+#		define const_cast(T, x) const_cast<T>(x)
+#	endif
+#	ifndef static_cast
+#		define static_cast(T, x) static_cast<T>(x)
+#	endif
+#	define const_cast1(type, expr)      const_cast<type>(expr)
+#	define const_cast2(type, expr)      const_cast<type>(expr)
+#	define const_cast3(type, expr)      const_cast<type>(expr)
+
+template<typename new_type>
+static __inline__ new_type signed_cast(const char *expr)
+{
+	return reinterpret_cast<new_type>(expr);
+}
+
+template<typename new_type>
+static __inline__ new_type signed_cast(const signed char *expr)
+{
+	return reinterpret_cast<new_type>(expr);
+}
+
+template<typename new_type>
+static __inline__ new_type signed_cast(const unsigned char *expr)
+{
+	return reinterpret_cast<new_type>(expr);
+}
+
+template<typename new_type>
+static __inline__ new_type signed_cast(char *expr)
+{
+	return reinterpret_cast<new_type>(expr);
+}
+
+template<typename new_type>
+static __inline__ new_type signed_cast(signed char *expr)
+{
+	return reinterpret_cast<new_type>(expr);
+}
+
+template<typename new_type>
+static __inline__ new_type signed_cast(unsigned char *expr)
+{
+	return reinterpret_cast<new_type>(expr);
+}
+
+#else
+	/* N.B. signed_cast<> does not exist in C++. */
+#	define __signed_cast_compatible(a, b) \
+		__builtin_choose_expr( \
+			__builtin_types_compatible_p(b, const char *) || \
+			__builtin_types_compatible_p(b, const signed char *) || \
+			__builtin_types_compatible_p(b, const unsigned char *), \
+			/* if src has a const qualifier */ \
+			__builtin_types_compatible_p(a, const char *) || \
+			__builtin_types_compatible_p(a, const signed char *) || \
+			__builtin_types_compatible_p(a, const unsigned char *), \
+			/* and if it has none... */ \
+			__builtin_types_compatible_p(a, const char *) || \
+			__builtin_types_compatible_p(a, const signed char *) || \
+			__builtin_types_compatible_p(a, const unsigned char *) || \
+			__builtin_types_compatible_p(a, char *) || \
+			__builtin_types_compatible_p(a, signed char *) || \
+			__builtin_types_compatible_p(a, unsigned char *) \
+		)
+
+#	if defined(__GNUC__) && !defined(__clang__) && !defined(signed_cast)
+#		define signed_cast(type, expr) ({ \
+			BUILD_BUG_ON(!__signed_cast_compatible(__typeof__(type), __typeof__(expr))); \
+			(type)(expr); \
+		})
+#	endif
+#	if defined(__GNUC__) && !defined(__clang__) && !defined(static_cast)
+#		define static_cast(type, expr) \
+			((struct { type x; }){(expr)}.x)
+#	endif
+#	if defined(__GNUC__) && !defined(__clang__) && !defined(const_cast1)
+		/*
+		 * The idea starts with (in abstract notation)
+		 * 	typeof deref typeof expr
+		 * To deref something, we need an object, which we can get by
+		 * creating a temporary aggregate, such as a union, of which
+		 * the member is accessed and dereferenced.
+		 * 	*(union { __typeof__(expr) x; }){init}.x
+		 * union has two nice properties:
+		 * - with an additional dummy member, we do not have to
+		 *   initialize x according to its type, which, if expr is
+		 *   an array type, may want extra braces.
+		 * - and with that dummy member, we also avoid the ugly
+		 *   "literal 0 is implicitly convertible to a pointer".
+		 * Unfortunately, this all requires C99 compound initializers.
+		 * That's ok - gcc and clang only treat it as a warning even
+		 * under strict C89 - and if you still force strict C89 on
+		 * yourself, you have a lot to answer for either way.
+		 */
+#		define __const_cast_strip(ptrs, expr) \
+			__typeof__(ptrs(union { int z; __typeof__(expr) x; }){0}.x)
+#		define __const_cast_p(ptrs, new_type, expr) ((new_type)( \
+			(expr) + \
+			BUILD_BUG_ON_EXPR(!__builtin_types_compatible_p(__const_cast_strip(ptrs, expr), __const_cast_strip(ptrs, new_type))) \
+		))
+#		define const_cast1(new_type, expr) __const_cast_p(*, new_type, expr)
+#		define const_cast2(new_type, expr) __const_cast_p(**, new_type, expr)
+#		define const_cast3(new_type, expr) __const_cast_p(***, new_type, expr)
+#	endif
+#	ifndef signed_cast
+#		define signed_cast(type, expr)      ((type)(expr))
+#	endif
+#	ifndef static_cast
+#		define static_cast(type, expr)      ((type)(expr))
+#	endif
+#	ifndef const_cast
+#		define const_cast(type, expr)       ((type)(expr))
+#	endif
+#	ifndef const_cast1
+#		define const_cast1(type, expr)      ((type)(expr))
+#		define const_cast2(type, expr)      ((type)(expr))
+#		define const_cast3(type, expr)      ((type)(expr))
+#	endif
+#	ifndef reinterpret_cast
+#		define reinterpret_cast(type, expr) ((type)(expr))
+#	endif
+#endif
+
+#endif /* _LIBHX_CAST_H */
diff --git a/include/libHX/defs.h b/include/libHX/defs.h
index 9d17019..31c818f 100644
--- a/include/libHX/defs.h
+++ b/include/libHX/defs.h
@@ -1,6 +1,7 @@
 #ifndef _LIBHX_DEFS_H
 #define _LIBHX_DEFS_H 1
 
+#include <libHX/cast.h>
 #ifdef __cplusplus
 #	define HXsizeof_member(type, member) sizeof(type::member)
 #	if __cplusplus >= 201100L
@@ -13,123 +14,9 @@
 #		include <type_traits>
 #		define containerof(var, T, member) reinterpret_cast<std::conditional<std::is_const<std::remove_pointer<decltype(var)>::type>::value, std::add_const<T>::type, T>::type *>(reinterpret_cast<std::conditional<std::is_const<std::remove_pointer<decltype(var)>::type>::value, const char, char>::type *>(var) - offsetof(T, member))
 #	endif
-#	ifndef static_cast
-#		define static_cast(T, x) static_cast<T>(x)
-#	endif
-
-template<typename new_type>
-static __inline__ new_type signed_cast(const char *expr)
-{
-	return reinterpret_cast<new_type>(expr);
-}
-
-template<typename new_type>
-static __inline__ new_type signed_cast(const signed char *expr)
-{
-	return reinterpret_cast<new_type>(expr);
-}
-
-template<typename new_type>
-static __inline__ new_type signed_cast(const unsigned char *expr)
-{
-	return reinterpret_cast<new_type>(expr);
-}
-
-template<typename new_type>
-static __inline__ new_type signed_cast(char *expr)
-{
-	return reinterpret_cast<new_type>(expr);
-}
-
-template<typename new_type>
-static __inline__ new_type signed_cast(signed char *expr)
-{
-	return reinterpret_cast<new_type>(expr);
-}
-
-template<typename new_type>
-static __inline__ new_type signed_cast(unsigned char *expr)
-{
-	return reinterpret_cast<new_type>(expr);
-}
 #else
 #	define HXsizeof_member(type, member) sizeof(((type *)NULL)->member)
 #	define HXtypeof_member(type, member) __typeof__(((type *)NULL)->member)
-	/* N.B. signed_cast<> does not exist in C++. */
-#	define __signed_cast_compatible(a, b) \
-		__builtin_choose_expr( \
-			__builtin_types_compatible_p(b, const char *) || \
-			__builtin_types_compatible_p(b, const signed char *) || \
-			__builtin_types_compatible_p(b, const unsigned char *), \
-			/* if src has a const qualifier */ \
-			__builtin_types_compatible_p(a, const char *) || \
-			__builtin_types_compatible_p(a, const signed char *) || \
-			__builtin_types_compatible_p(a, const unsigned char *), \
-			/* and if it has none... */ \
-			__builtin_types_compatible_p(a, const char *) || \
-			__builtin_types_compatible_p(a, const signed char *) || \
-			__builtin_types_compatible_p(a, const unsigned char *) || \
-			__builtin_types_compatible_p(a, char *) || \
-			__builtin_types_compatible_p(a, signed char *) || \
-			__builtin_types_compatible_p(a, unsigned char *) \
-		)
-
-#	if defined(__GNUC__) && !defined(__clang__) && !defined(signed_cast)
-#		define signed_cast(type, expr) ({ \
-			BUILD_BUG_ON(!__signed_cast_compatible(__typeof__(type), __typeof__(expr))); \
-			(type)(expr); \
-		})
-#	endif
-#	if defined(__GNUC__) && !defined(__clang__) && !defined(static_cast)
-#		define static_cast(type, expr) \
-			((struct { type x; }){(expr)}.x)
-#	endif
-#	if defined(__GNUC__) && !defined(__clang__) && !defined(const_cast1)
-		/*
-		 * The idea starts with (in abstract notation)
-		 * 	typeof deref typeof expr
-		 * To deref something, we need an object, which we can get by
-		 * creating a temporary aggregate, such as a union, of which
-		 * the member is accessed and dereferenced.
-		 * 	*(union { __typeof__(expr) x; }){init}.x
-		 * union has two nice properties:
-		 * - with an additional dummy member, we do not have to
-		 *   initialize x according to its type, which, if expr is
-		 *   an array type, may want extra braces.
-		 * - and with that dummy member, we also avoid the ugly
-		 *   "literal 0 is implicitly convertible to a pointer".
-		 * Unfortunately, this all requires C99 compound initializers.
-		 * That's ok - gcc and clang only treat it as a warning even
-		 * under strict C89 - and if you still force strict C89 on
-		 * yourself, you have a lot to answer for either way.
-		 */
-#		define __const_cast_strip(ptrs, expr) \
-			__typeof__(ptrs(union { int z; __typeof__(expr) x; }){0}.x)
-#		define __const_cast_p(ptrs, new_type, expr) ((new_type)( \
-			(expr) + \
-			BUILD_BUG_ON_EXPR(!__builtin_types_compatible_p(__const_cast_strip(ptrs, expr), __const_cast_strip(ptrs, new_type))) \
-		))
-#		define const_cast1(new_type, expr) __const_cast_p(*, new_type, expr)
-#		define const_cast2(new_type, expr) __const_cast_p(**, new_type, expr)
-#		define const_cast3(new_type, expr) __const_cast_p(***, new_type, expr)
-#	endif
-#	ifndef signed_cast
-#		define signed_cast(type, expr)      ((type)(expr))
-#	endif
-#	ifndef static_cast
-#		define static_cast(type, expr)      ((type)(expr))
-#	endif
-#	ifndef const_cast
-#		define const_cast(type, expr)       ((type)(expr))
-#	endif
-#	ifndef const_cast1
-#		define const_cast1(type, expr)      ((type)(expr))
-#		define const_cast2(type, expr)      ((type)(expr))
-#		define const_cast3(type, expr)      ((type)(expr))
-#	endif
-#	ifndef reinterpret_cast
-#		define reinterpret_cast(type, expr) ((type)(expr))
-#	endif
 #	ifndef containerof
 #		include <stddef.h>
 #		define containerof(var, type, member) reinterpret_cast(type *, \
diff --git a/include/libHX/misc.h b/include/libHX/misc.h
index 1d49c7f..ac381dc 100644
--- a/include/libHX/misc.h
+++ b/include/libHX/misc.h
@@ -79,7 +79,10 @@ extern struct timespec *HX_timespec_mulf(struct timespec *,
 extern struct timeval *HX_timeval_sub(struct timeval *,
 	const struct timeval *, const struct timeval *);
 extern long HX_time_compare(const struct stat *, const struct stat *, char);
+#ifndef LIBHX_ZVECFREE_DECLARATION
+#define LIBHX_ZVECFREE_DECLARATION
 extern void HX_zvecfree(char **);
+#endif
 
 /*
  *	RAND.C
diff --git a/include/libHX/option.h b/include/libHX/option.h
index 40cc6e7..ef9c626 100644
--- a/include/libHX/option.h
+++ b/include/libHX/option.h
@@ -8,6 +8,7 @@
 #	include <stddef.h>
 #	include <stdio.h>
 #endif
+#include <libHX/cast.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -228,8 +229,13 @@ struct HXoption {
 	const char *help, *htyp;
 };
 
-extern int HX_getopt(const struct HXoption *, int *, const char ***,
-	unsigned int);
+#ifndef LIBHX_ZVECFREE_DECLARATION
+#define LIBHX_ZVECFREE_DECLARATION
+extern void HX_zvecfree(char **);
+#endif
+extern int HX_getopt(const struct HXoption *, int *, char ***, unsigned int);
+extern int HX_getopt5(const struct HXoption *, char **argv, int *nargc, char ***nargv, unsigned int flags);
+#define HX_getopt(a, b, c, d) HX_getopt((a), (b), const_cast3(char ***, (c)), (d))
 extern void HX_getopt_help(const struct HXoptcb *, FILE *);
 extern void HX_getopt_help_cb(const struct HXoptcb *);
 extern void HX_getopt_usage(const struct HXoptcb *, FILE *);
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 4e87d34..717e769 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1,6 +1,7 @@
 # libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
 #
-#   Copyright (C) 1996-2001, 2003-2015 Free Software Foundation, Inc.
+#   Copyright (C) 1996-2001, 2003-2019, 2021-2022 Free Software
+#   Foundation, Inc.
 #   Written by Gordon Matzigkeit, 1996
 #
 # This file is free software; the Free Software Foundation gives
@@ -31,7 +32,7 @@ m4_define([_LT_COPYING], [dnl
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ])
 
-# serial 58 LT_INIT
+# serial 59 LT_INIT
 
 
 # LT_PREREQ(VERSION)
@@ -181,6 +182,7 @@ m4_require([_LT_FILEUTILS_DEFAULTS])dnl
 m4_require([_LT_CHECK_SHELL_FEATURES])dnl
 m4_require([_LT_PATH_CONVERSION_FUNCTIONS])dnl
 m4_require([_LT_CMD_RELOAD])dnl
+m4_require([_LT_DECL_FILECMD])dnl
 m4_require([_LT_CHECK_MAGIC_METHOD])dnl
 m4_require([_LT_CHECK_SHAREDLIB_FROM_LINKLIB])dnl
 m4_require([_LT_CMD_OLD_ARCHIVE])dnl
@@ -219,8 +221,8 @@ esac
 ofile=libtool
 can_build_shared=yes
 
-# All known linkers require a '.a' archive for static linking (except MSVC,
-# which needs '.lib').
+# All known linkers require a '.a' archive for static linking (except MSVC and
+# ICC, which need '.lib').
 libext=a
 
 with_gnu_ld=$lt_cv_prog_gnu_ld
@@ -777,7 +779,7 @@ _LT_EOF
   # if finds mixed CR/LF and LF-only lines.  Since sed operates in
   # text mode, it properly converts lines to CR/LF.  This bash problem
   # is reportedly fixed, but why not run on old versions too?
-  sed '$q' "$ltmain" >> "$cfgfile" \
+  $SED '$q' "$ltmain" >> "$cfgfile" \
      || (rm -f "$cfgfile"; exit 1)
 
    mv -f "$cfgfile" "$ofile" ||
@@ -1041,8 +1043,8 @@ int forced_loaded() { return 2;}
 _LT_EOF
       echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD
       $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD
-      echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
-      $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
+      echo "$AR $AR_FLAGS libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
+      $AR $AR_FLAGS libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
       echo "$RANLIB libconftest.a" >&AS_MESSAGE_LOG_FD
       $RANLIB libconftest.a 2>&AS_MESSAGE_LOG_FD
       cat > conftest.c << _LT_EOF
@@ -1066,17 +1068,12 @@ _LT_EOF
       _lt_dar_allow_undefined='$wl-undefined ${wl}suppress' ;;
     darwin1.*)
       _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
-    darwin*) # darwin 5.x on
-      # if running on 10.5 or later, the deployment target defaults
-      # to the OS version, if on x86, and 10.4, the deployment
-      # target defaults to 10.4. Don't you love it?
-      case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
-	10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
-	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
-	10.[[012]][[,.]]*)
-	  _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
-	10.*)
-	  _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
+    darwin*)
+      case $MACOSX_DEPLOYMENT_TARGET,$host in
+        10.[[012]],*|,*powerpc*-darwin[[5-8]]*)
+          _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
+        *)
+          _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
       esac
     ;;
   esac
@@ -1125,12 +1122,12 @@ m4_defun([_LT_DARWIN_LINKER_FEATURES],
     output_verbose_link_cmd=func_echo_all
     _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dsymutil"
     _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dsymutil"
-    _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil"
-    _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil"
+    _LT_TAGVAR(archive_expsym_cmds, $1)="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil"
+    _LT_TAGVAR(module_expsym_cmds, $1)="$SED -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil"
     m4_if([$1], [CXX],
 [   if test yes != "$lt_cv_apple_cc_single_mod"; then
       _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dsymutil"
-      _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dar_export_syms$_lt_dsymutil"
+      _LT_TAGVAR(archive_expsym_cmds, $1)="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dar_export_syms$_lt_dsymutil"
     fi
 ],[])
   else
@@ -1244,7 +1241,8 @@ _LT_DECL([], [ECHO], [1], [An echo program that protects backslashes])
 # _LT_WITH_SYSROOT
 # ----------------
 AC_DEFUN([_LT_WITH_SYSROOT],
-[AC_MSG_CHECKING([for sysroot])
+[m4_require([_LT_DECL_SED])dnl
+AC_MSG_CHECKING([for sysroot])
 AC_ARG_WITH([sysroot],
 [AS_HELP_STRING([--with-sysroot@<:@=DIR@:>@],
   [Search for dependent libraries within DIR (or the compiler's sysroot
@@ -1261,7 +1259,7 @@ case $with_sysroot in #(
    fi
    ;; #(
  /*)
-   lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
+   lt_sysroot=`echo "$with_sysroot" | $SED -e "$sed_quote_subst"`
    ;; #(
  no|'')
    ;; #(
@@ -1291,7 +1289,7 @@ ia64-*-hpux*)
   # options accordingly.
   echo 'int i;' > conftest.$ac_ext
   if AC_TRY_EVAL(ac_compile); then
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *ELF-32*)
 	HPUX_IA64_MODE=32
 	;;
@@ -1308,7 +1306,7 @@ ia64-*-hpux*)
   echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext
   if AC_TRY_EVAL(ac_compile); then
     if test yes = "$lt_cv_prog_gnu_ld"; then
-      case `/usr/bin/file conftest.$ac_objext` in
+      case `$FILECMD conftest.$ac_objext` in
 	*32-bit*)
 	  LD="${LD-ld} -melf32bsmip"
 	  ;;
@@ -1320,7 +1318,7 @@ ia64-*-hpux*)
 	;;
       esac
     else
-      case `/usr/bin/file conftest.$ac_objext` in
+      case `$FILECMD conftest.$ac_objext` in
 	*32-bit*)
 	  LD="${LD-ld} -32"
 	  ;;
@@ -1342,7 +1340,7 @@ mips64*-*linux*)
   echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext
   if AC_TRY_EVAL(ac_compile); then
     emul=elf
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *32-bit*)
 	emul="${emul}32"
 	;;
@@ -1350,7 +1348,7 @@ mips64*-*linux*)
 	emul="${emul}64"
 	;;
     esac
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *MSB*)
 	emul="${emul}btsmip"
 	;;
@@ -1358,7 +1356,7 @@ mips64*-*linux*)
 	emul="${emul}ltsmip"
 	;;
     esac
-    case `/usr/bin/file conftest.$ac_objext` in
+    case `$FILECMD conftest.$ac_objext` in
       *N32*)
 	emul="${emul}n32"
 	;;
@@ -1378,14 +1376,14 @@ s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
   # not appear in the list.
   echo 'int i;' > conftest.$ac_ext
   if AC_TRY_EVAL(ac_compile); then
-    case `/usr/bin/file conftest.o` in
+    case `$FILECMD conftest.o` in
       *32-bit*)
 	case $host in
 	  x86_64-*kfreebsd*-gnu)
 	    LD="${LD-ld} -m elf_i386_fbsd"
 	    ;;
 	  x86_64-*linux*)
-	    case `/usr/bin/file conftest.o` in
+	    case `$FILECMD conftest.o` in
 	      *x86-64*)
 		LD="${LD-ld} -m elf32_x86_64"
 		;;
@@ -1453,7 +1451,7 @@ s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
   # options accordingly.
   echo 'int i;' > conftest.$ac_ext
   if AC_TRY_EVAL(ac_compile); then
-    case `/usr/bin/file conftest.o` in
+    case `$FILECMD conftest.o` in
     *64-bit*)
       case $lt_cv_prog_gnu_ld in
       yes*)
@@ -1492,9 +1490,22 @@ need_locks=$enable_libtool_lock
 m4_defun([_LT_PROG_AR],
 [AC_CHECK_TOOLS(AR, [ar], false)
 : ${AR=ar}
-: ${AR_FLAGS=cru}
 _LT_DECL([], [AR], [1], [The archiver])
-_LT_DECL([], [AR_FLAGS], [1], [Flags to create an archive])
+
+# Use ARFLAGS variable as AR's operation code to sync the variable naming with
+# Automake.  If both AR_FLAGS and ARFLAGS are specified, AR_FLAGS should have
+# higher priority because thats what people were doing historically (setting
+# ARFLAGS for automake and AR_FLAGS for libtool).  FIXME: Make the AR_FLAGS
+# variable obsoleted/removed.
+
+test ${AR_FLAGS+y} || AR_FLAGS=${ARFLAGS-cr}
+lt_ar_flags=$AR_FLAGS
+_LT_DECL([], [lt_ar_flags], [0], [Flags to create an archive (by configure)])
+
+# Make AR_FLAGS overridable by 'make ARFLAGS='.  Don't try to run-time override
+# by AR_FLAGS because that was never working and AR_FLAGS is about to die.
+_LT_DECL([], [AR_FLAGS], [\@S|@{ARFLAGS-"\@S|@lt_ar_flags"}],
+         [Flags to create an archive])
 
 AC_CACHE_CHECK([for archiver @FILE support], [lt_cv_ar_at_file],
   [lt_cv_ar_at_file=no
@@ -1713,7 +1724,7 @@ AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
     lt_cv_sys_max_cmd_len=8192;
     ;;
 
-  bitrig* | darwin* | dragonfly* | freebsd* | netbsd* | openbsd*)
+  bitrig* | darwin* | dragonfly* | freebsd* | midnightbsd* | netbsd* | openbsd*)
     # This has been around since 386BSD, at least.  Likely further.
     if test -x /sbin/sysctl; then
       lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
@@ -1756,7 +1767,7 @@ AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
   sysv5* | sco5v6* | sysv4.2uw2*)
     kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
     if test -n "$kargmax"; then
-      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[	 ]]//'`
+      lt_cv_sys_max_cmd_len=`echo $kargmax | $SED 's/.*[[	 ]]//'`
     else
       lt_cv_sys_max_cmd_len=32768
     fi
@@ -2206,26 +2217,35 @@ m4_defun([_LT_CMD_STRIPLIB],
 striplib=
 old_striplib=
 AC_MSG_CHECKING([whether stripping libraries is possible])
-if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
-  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
-  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
-  AC_MSG_RESULT([yes])
+if test -z "$STRIP"; then
+  AC_MSG_RESULT([no])
 else
-# FIXME - insert some real tests, host_os isn't really good enough
-  case $host_os in
-  darwin*)
-    if test -n "$STRIP"; then
+  if $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+    old_striplib="$STRIP --strip-debug"
+    striplib="$STRIP --strip-unneeded"
+    AC_MSG_RESULT([yes])
+  else
+    case $host_os in
+    darwin*)
+      # FIXME - insert some real tests, host_os isn't really good enough
       striplib="$STRIP -x"
       old_striplib="$STRIP -S"
       AC_MSG_RESULT([yes])
-    else
+      ;;
+    freebsd*)
+      if $STRIP -V 2>&1 | $GREP "elftoolchain" >/dev/null; then
+        old_striplib="$STRIP --strip-debug"
+        striplib="$STRIP --strip-unneeded"
+        AC_MSG_RESULT([yes])
+      else
+        AC_MSG_RESULT([no])
+      fi
+      ;;
+    *)
       AC_MSG_RESULT([no])
-    fi
-    ;;
-  *)
-    AC_MSG_RESULT([no])
-    ;;
-  esac
+      ;;
+    esac
+  fi
 fi
 _LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
 _LT_DECL([], [striplib], [1])
@@ -2548,7 +2568,7 @@ cygwin* | mingw* | pw32* | cegcc*)
     case $host_os in
     cygwin*)
       # Cygwin DLLs use 'cyg' prefix rather than 'lib'
-      soname_spec='`echo $libname | sed -e 's/^lib/cyg/'``echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext'
+      soname_spec='`echo $libname | $SED -e 's/^lib/cyg/'``echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext'
 m4_if([$1], [],[
       sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
       ;;
@@ -2558,14 +2578,14 @@ m4_if([$1], [],[
       ;;
     pw32*)
       # pw32 DLLs use 'pw' prefix rather than 'lib'
-      library_names_spec='`echo $libname | sed -e 's/^lib/pw/'``echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext'
+      library_names_spec='`echo $libname | $SED -e 's/^lib/pw/'``echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext'
       ;;
     esac
     dynamic_linker='Win32 ld.exe'
     ;;
 
-  *,cl*)
-    # Native MSVC
+  *,cl* | *,icl*)
+    # Native MSVC or ICC
     libname_spec='$name'
     soname_spec='$libname`echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext'
     library_names_spec='$libname.dll.lib'
@@ -2584,7 +2604,7 @@ m4_if([$1], [],[
       done
       IFS=$lt_save_ifs
       # Convert to MSYS style.
-      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([[a-zA-Z]]\\):| /\\1|g' -e 's|^ ||'`
+      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's|\\\\|/|g' -e 's| \\([[a-zA-Z]]\\):| /\\1|g' -e 's|^ ||'`
       ;;
     cygwin*)
       # Convert to unix form, then to dos form, then back to unix form
@@ -2621,7 +2641,7 @@ m4_if([$1], [],[
     ;;
 
   *)
-    # Assume MSVC wrapper
+    # Assume MSVC and ICC wrapper
     library_names_spec='$libname`echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext $libname.lib'
     dynamic_linker='Win32 ld.exe'
     ;;
@@ -2654,7 +2674,7 @@ dgux*)
   shlibpath_var=LD_LIBRARY_PATH
   ;;
 
-freebsd* | dragonfly*)
+freebsd* | dragonfly* | midnightbsd*)
   # DragonFly does not have aout.  When/if they implement a new
   # versioning mechanism, adjust this.
   if test -x /usr/bin/objformat; then
@@ -3453,7 +3473,7 @@ beos*)
 
 bsdi[[45]]*)
   lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)'
-  lt_cv_file_magic_cmd='/usr/bin/file -L'
+  lt_cv_file_magic_cmd='$FILECMD -L'
   lt_cv_file_magic_test_file=/shlib/libc.so
   ;;
 
@@ -3487,14 +3507,14 @@ darwin* | rhapsody*)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
-freebsd* | dragonfly*)
+freebsd* | dragonfly* | midnightbsd*)
   if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
     case $host_cpu in
     i*86 )
       # Not sure whether the presence of OpenBSD here was a mistake.
       # Let's accept both of them until this is cleared up.
       lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
-      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_cmd=$FILECMD
       lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
       ;;
     esac
@@ -3508,7 +3528,7 @@ haiku*)
   ;;
 
 hpux10.20* | hpux11*)
-  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_cmd=$FILECMD
   case $host_cpu in
   ia64*)
     lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
@@ -3555,7 +3575,7 @@ netbsd*)
 
 newos6*)
   lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
-  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_cmd=$FILECMD
   lt_cv_file_magic_test_file=/usr/lib/libnls.so
   ;;
 
@@ -3682,13 +3702,13 @@ else
 	mingw*) lt_bad_file=conftest.nm/nofile ;;
 	*) lt_bad_file=/dev/null ;;
 	esac
-	case `"$tmp_nm" -B $lt_bad_file 2>&1 | sed '1q'` in
+	case `"$tmp_nm" -B $lt_bad_file 2>&1 | $SED '1q'` in
 	*$lt_bad_file* | *'Invalid file or object type'*)
 	  lt_cv_path_NM="$tmp_nm -B"
 	  break 2
 	  ;;
 	*)
-	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  case `"$tmp_nm" -p /dev/null 2>&1 | $SED '1q'` in
 	  */dev/null*)
 	    lt_cv_path_NM="$tmp_nm -p"
 	    break 2
@@ -3714,7 +3734,7 @@ else
     # Let the user override the test.
   else
     AC_CHECK_TOOLS(DUMPBIN, [dumpbin "link -dump"], :)
-    case `$DUMPBIN -symbols -headers /dev/null 2>&1 | sed '1q'` in
+    case `$DUMPBIN -symbols -headers /dev/null 2>&1 | $SED '1q'` in
     *COFF*)
       DUMPBIN="$DUMPBIN -symbols -headers"
       ;;
@@ -3954,7 +3974,7 @@ esac
 
 if test "$lt_cv_nm_interface" = "MS dumpbin"; then
   # Gets list of data symbols to import.
-  lt_cv_sys_global_symbol_to_import="sed -n -e 's/^I .* \(.*\)$/\1/p'"
+  lt_cv_sys_global_symbol_to_import="$SED -n -e 's/^I .* \(.*\)$/\1/p'"
   # Adjust the below global symbol transforms to fixup imported variables.
   lt_cdecl_hook=" -e 's/^I .* \(.*\)$/extern __declspec(dllimport) char \1;/p'"
   lt_c_name_hook=" -e 's/^I .* \(.*\)$/  {\"\1\", (void *) 0},/p'"
@@ -3972,20 +3992,20 @@ fi
 # Transform an extracted symbol line into a proper C declaration.
 # Some systems (esp. on ia64) link data and code symbols differently,
 # so use this general approach.
-lt_cv_sys_global_symbol_to_cdecl="sed -n"\
+lt_cv_sys_global_symbol_to_cdecl="$SED -n"\
 $lt_cdecl_hook\
 " -e 's/^T .* \(.*\)$/extern int \1();/p'"\
 " -e 's/^$symcode$symcode* .* \(.*\)$/extern char \1;/p'"
 
 # Transform an extracted symbol line into symbol name and symbol address
-lt_cv_sys_global_symbol_to_c_name_address="sed -n"\
+lt_cv_sys_global_symbol_to_c_name_address="$SED -n"\
 $lt_c_name_hook\
 " -e 's/^: \(.*\) .*$/  {\"\1\", (void *) 0},/p'"\
 " -e 's/^$symcode$symcode* .* \(.*\)$/  {\"\1\", (void *) \&\1},/p'"
 
 # Transform an extracted symbol line into symbol name with lib prefix and
 # symbol address.
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n"\
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="$SED -n"\
 $lt_c_name_lib_hook\
 " -e 's/^: \(.*\) .*$/  {\"\1\", (void *) 0},/p'"\
 " -e 's/^$symcode$symcode* .* \(lib.*\)$/  {\"\1\", (void *) \&\1},/p'"\
@@ -4009,7 +4029,7 @@ for ac_symprfx in "" "_"; do
   if test "$lt_cv_nm_interface" = "MS dumpbin"; then
     # Fake it for dumpbin and say T for any non-static function,
     # D for any global variable and I for any imported variable.
-    # Also find C++ and __fastcall symbols from MSVC++,
+    # Also find C++ and __fastcall symbols from MSVC++ or ICC,
     # which start with @ or ?.
     lt_cv_sys_global_symbol_pipe="$AWK ['"\
 "     {last_section=section; section=\$ 3};"\
@@ -4027,9 +4047,9 @@ for ac_symprfx in "" "_"; do
 "     s[1]~prfx {split(s[1],t,\"@\"); print f,t[1],substr(t[1],length(prfx))}"\
 "     ' prfx=^$ac_symprfx]"
   else
-    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[	 ]]\($symcode$symcode*\)[[	 ]][[	 ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+    lt_cv_sys_global_symbol_pipe="$SED -n -e 's/^.*[[	 ]]\($symcode$symcode*\)[[	 ]][[	 ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
   fi
-  lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
+  lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | $SED '/ __gnu_lto/d'"
 
   # Check to see that the pipe works correctly.
   pipe_works=no
@@ -4316,7 +4336,7 @@ m4_if([$1], [CXX], [
 	    ;;
 	esac
 	;;
-      freebsd* | dragonfly*)
+      freebsd* | dragonfly* | midnightbsd*)
 	# FreeBSD uses GNU C++
 	;;
       hpux9* | hpux10* | hpux11*)
@@ -4399,7 +4419,7 @@ m4_if([$1], [CXX], [
 	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
 	    ;;
 	  *)
-	    case `$CC -V 2>&1 | sed 5q` in
+	    case `$CC -V 2>&1 | $SED 5q` in
 	    *Sun\ C*)
 	      # Sun C++ 5.9
 	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
@@ -4735,7 +4755,7 @@ m4_if([$1], [CXX], [
 	_LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
 	;;
       *)
-	case `$CC -V 2>&1 | sed 5q` in
+	case `$CC -V 2>&1 | $SED 5q` in
 	*Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [[1-7]].* | *Sun*Fortran*\ 8.[[0-3]]*)
 	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
 	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
@@ -4918,7 +4938,7 @@ m4_if([$1], [CXX], [
     if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
       _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols'
     else
-      _LT_TAGVAR(export_symbols_cmds, $1)='`func_echo_all $NM | $SED -e '\''s/B\([[^B]]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && ([substr](\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
+      _LT_TAGVAR(export_symbols_cmds, $1)='`func_echo_all $NM | $SED -e '\''s/B\([[^B]]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && ([substr](\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
     fi
     ;;
   pw32*)
@@ -4926,7 +4946,7 @@ m4_if([$1], [CXX], [
     ;;
   cygwin* | mingw* | cegcc*)
     case $cc_basename in
-    cl*)
+    cl* | icl*)
       _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
       ;;
     *)
@@ -4983,15 +5003,15 @@ dnl Note also adjust exclude_expsyms for C++ above.
 
   case $host_os in
   cygwin* | mingw* | pw32* | cegcc*)
-    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # FIXME: the MSVC++ and ICC port hasn't been tested in a loooong time
     # When not using gcc, we currently assume that we are using
-    # Microsoft Visual C++.
+    # Microsoft Visual C++ or Intel C++ Compiler.
     if test yes != "$GCC"; then
       with_gnu_ld=no
     fi
     ;;
   interix*)
-    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    # we just hope/assume this is gcc and not c89 (= MSVC++ or ICC)
     with_gnu_ld=yes
     ;;
   openbsd* | bitrig*)
@@ -5043,7 +5063,7 @@ dnl Note also adjust exclude_expsyms for C++ above.
       _LT_TAGVAR(whole_archive_flag_spec, $1)=
     fi
     supports_anon_versioning=no
-    case `$LD -v | $SED -e 's/([^)]\+)\s\+//' 2>&1` in
+    case `$LD -v | $SED -e 's/([[^)]]\+)\s\+//' 2>&1` in
       *GNU\ gold*) supports_anon_versioning=yes ;;
       *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
       *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
@@ -5155,6 +5175,7 @@ _LT_EOF
 	emximp -o $lib $output_objdir/$libname.def'
       _LT_TAGVAR(old_archive_From_new_cmds, $1)='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def'
       _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+      _LT_TAGVAR(file_list_spec, $1)='@'
       ;;
 
     interix[[3-9]]*)
@@ -5169,7 +5190,7 @@ _LT_EOF
       # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
       # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
       _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
-      _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      _LT_TAGVAR(archive_expsym_cmds, $1)='$SED "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
       ;;
 
     gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
@@ -5212,7 +5233,7 @@ _LT_EOF
 	  _LT_TAGVAR(compiler_needs_object, $1)=yes
 	  ;;
 	esac
-	case `$CC -V 2>&1 | sed 5q` in
+	case `$CC -V 2>&1 | $SED 5q` in
 	*Sun\ C*)			# Sun C 5.9
 	  _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive'
 	  _LT_TAGVAR(compiler_needs_object, $1)=yes
@@ -5224,7 +5245,7 @@ _LT_EOF
 
         if test yes = "$supports_anon_versioning"; then
           _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
-            cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+            cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
             echo "local: *; };" >> $output_objdir/$libname.ver~
             $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib'
         fi
@@ -5240,7 +5261,7 @@ _LT_EOF
 	  _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib'
 	  if test yes = "$supports_anon_versioning"; then
 	    _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
-              cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+              cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
               echo "local: *; };" >> $output_objdir/$libname.ver~
               $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
 	  fi
@@ -5372,7 +5393,7 @@ _LT_EOF
 	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
 	  _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols'
 	else
-	  _LT_TAGVAR(export_symbols_cmds, $1)='`func_echo_all $NM | $SED -e '\''s/B\([[^B]]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && ([substr](\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
+	  _LT_TAGVAR(export_symbols_cmds, $1)='`func_echo_all $NM | $SED -e '\''s/B\([[^B]]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && ([substr](\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols'
 	fi
 	aix_use_runtimelinking=no
 
@@ -5555,12 +5576,12 @@ _LT_EOF
 
     cygwin* | mingw* | pw32* | cegcc*)
       # When not using gcc, we currently assume that we are using
-      # Microsoft Visual C++.
+      # Microsoft Visual C++ or Intel C++ Compiler.
       # hardcode_libdir_flag_spec is actually meaningless, as there is
       # no search path for DLLs.
       case $cc_basename in
-      cl*)
-	# Native MSVC
+      cl* | icl*)
+	# Native MSVC or ICC
 	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
 	_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
 	_LT_TAGVAR(always_export_symbols, $1)=yes
@@ -5601,7 +5622,7 @@ _LT_EOF
           fi'
 	;;
       *)
-	# Assume MSVC wrapper
+	# Assume MSVC and ICC wrapper
 	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
 	_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
 	# Tell ltmain to make .lib files, not .a files.
@@ -5649,7 +5670,7 @@ _LT_EOF
       ;;
 
     # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
-    freebsd* | dragonfly*)
+    freebsd* | dragonfly* | midnightbsd*)
       _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
       _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
       _LT_TAGVAR(hardcode_direct, $1)=yes
@@ -5860,6 +5881,7 @@ _LT_EOF
 	emximp -o $lib $output_objdir/$libname.def'
       _LT_TAGVAR(old_archive_From_new_cmds, $1)='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def'
       _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+      _LT_TAGVAR(file_list_spec, $1)='@'
       ;;
 
     osf3*)
@@ -6630,8 +6652,8 @@ if test yes != "$_lt_caught_CXX_error"; then
 
       cygwin* | mingw* | pw32* | cegcc*)
 	case $GXX,$cc_basename in
-	,cl* | no,cl*)
-	  # Native MSVC
+	,cl* | no,cl* | ,icl* | no,icl*)
+	  # Native MSVC or ICC
 	  # hardcode_libdir_flag_spec is actually meaningless, as there is
 	  # no search path for DLLs.
 	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
@@ -6729,6 +6751,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	  emximp -o $lib $output_objdir/$libname.def'
 	_LT_TAGVAR(old_archive_From_new_cmds, $1)='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def'
 	_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+	_LT_TAGVAR(file_list_spec, $1)='@'
 	;;
 
       dgux*)
@@ -6759,7 +6782,7 @@ if test yes != "$_lt_caught_CXX_error"; then
         _LT_TAGVAR(archive_cmds_need_lc, $1)=no
         ;;
 
-      freebsd* | dragonfly*)
+      freebsd* | dragonfly* | midnightbsd*)
         # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
         # conventions
         _LT_TAGVAR(ld_shlibs, $1)=yes
@@ -6896,7 +6919,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	# 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
 	# time.  Moving up from 0x10000000 also allows more sbrk(2) space.
 	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
-	_LT_TAGVAR(archive_expsym_cmds, $1)='sed "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$SED "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
 	;;
       irix5* | irix6*)
         case $cc_basename in
@@ -7036,13 +7059,13 @@ if test yes != "$_lt_caught_CXX_error"; then
 	    _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib'
 	    if test yes = "$supports_anon_versioning"; then
 	      _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
-                cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+                cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
                 echo "local: *; };" >> $output_objdir/$libname.ver~
                 $CC -qmkshrobj $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib'
 	    fi
 	    ;;
 	  *)
-	    case `$CC -V 2>&1 | sed 5q` in
+	    case `$CC -V 2>&1 | $SED 5q` in
 	    *Sun\ C*)
 	      # Sun C++ 5.9
 	      _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
@@ -8188,6 +8211,14 @@ _LT_DECL([], [DLLTOOL], [1], [DLL creation program])
 AC_SUBST([DLLTOOL])
 ])
 
+# _LT_DECL_FILECMD
+# ----------------
+# Check for a file(cmd) program that can be used to detect file type and magic
+m4_defun([_LT_DECL_FILECMD],
+[AC_CHECK_TOOL([FILECMD], [file], [:])
+_LT_DECL([], [FILECMD], [1], [A file(cmd) program that detects file types])
+])# _LD_DECL_FILECMD
+
 # _LT_DECL_SED
 # ------------
 # Check for a fully-functional sed program, that truncates
diff --git a/m4/ltoptions.m4 b/m4/ltoptions.m4
index 94b0829..b0b5e9c 100644
--- a/m4/ltoptions.m4
+++ b/m4/ltoptions.m4
@@ -1,7 +1,7 @@
 # Helper functions for option handling.                    -*- Autoconf -*-
 #
-#   Copyright (C) 2004-2005, 2007-2009, 2011-2015 Free Software
-#   Foundation, Inc.
+#   Copyright (C) 2004-2005, 2007-2009, 2011-2019, 2021-2022 Free
+#   Software Foundation, Inc.
 #   Written by Gary V. Vaughan, 2004
 #
 # This file is free software; the Free Software Foundation gives
diff --git a/m4/ltsugar.m4 b/m4/ltsugar.m4
index 48bc934..902508b 100644
--- a/m4/ltsugar.m4
+++ b/m4/ltsugar.m4
@@ -1,6 +1,6 @@
 # ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
 #
-# Copyright (C) 2004-2005, 2007-2008, 2011-2015 Free Software
+# Copyright (C) 2004-2005, 2007-2008, 2011-2019, 2021-2022 Free Software
 # Foundation, Inc.
 # Written by Gary V. Vaughan, 2004
 #
diff --git a/m4/ltversion.m4 b/m4/ltversion.m4
index fa04b52..b155d0a 100644
--- a/m4/ltversion.m4
+++ b/m4/ltversion.m4
@@ -1,6 +1,7 @@
 # ltversion.m4 -- version numbers			-*- Autoconf -*-
 #
-#   Copyright (C) 2004, 2011-2015 Free Software Foundation, Inc.
+#   Copyright (C) 2004, 2011-2019, 2021-2022 Free Software Foundation,
+#   Inc.
 #   Written by Scott James Remnant, 2004
 #
 # This file is free software; the Free Software Foundation gives
@@ -9,15 +10,15 @@
 
 # @configure_input@
 
-# serial 4179 ltversion.m4
+# serial 4245 ltversion.m4
 # This file is part of GNU Libtool
 
-m4_define([LT_PACKAGE_VERSION], [2.4.6])
-m4_define([LT_PACKAGE_REVISION], [2.4.6])
+m4_define([LT_PACKAGE_VERSION], [2.4.7])
+m4_define([LT_PACKAGE_REVISION], [2.4.7])
 
 AC_DEFUN([LTVERSION_VERSION],
-[macro_version='2.4.6'
-macro_revision='2.4.6'
+[macro_version='2.4.7'
+macro_revision='2.4.7'
 _LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
 _LT_DECL(, macro_revision, 0)
 ])
diff --git a/m4/lt~obsolete.m4 b/m4/lt~obsolete.m4
index c6b26f8..0f7a875 100644
--- a/m4/lt~obsolete.m4
+++ b/m4/lt~obsolete.m4
@@ -1,7 +1,7 @@
 # lt~obsolete.m4 -- aclocal satisfying obsolete definitions.    -*-Autoconf-*-
 #
-#   Copyright (C) 2004-2005, 2007, 2009, 2011-2015 Free Software
-#   Foundation, Inc.
+#   Copyright (C) 2004-2005, 2007, 2009, 2011-2019, 2021-2022 Free
+#   Software Foundation, Inc.
 #   Written by Scott James Remnant, 2004.
 #
 # This file is free software; the Free Software Foundation gives
diff --git a/src/Makefile.am b/src/Makefile.am
index ac68f74..676cd73 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,15 +5,11 @@ AM_CFLAGS   = ${regular_CFLAGS}
 AM_CXXFLAGS = ${regular_CXXFLAGS}
 
 lib_LTLIBRARIES  = libHX.la
-if HAVE_DLFCN_H
-lib_LTLIBRARIES += libHX_rtcheck.la
-endif
-
 libHX_la_SOURCES = deque.c dl.c format.c io.c map.c \
                    mc.c misc.c opt.c proc.c \
                    rand.c socket.c string.c time.c
 libHX_la_LIBADD  = ${libdl_LIBS} -lm ${libpthread_LIBS} ${librt_LIBS} ${libsocket_LIBS}
-libHX_la_LDFLAGS = -no-undefined -version-info 38:0:6
+libHX_la_LDFLAGS = -no-undefined -version-info 39:0:7
 if WITH_GNU_LD
 libHX_la_LDFLAGS += -Wl,--version-script=${srcdir}/libHX.map
 endif
@@ -24,21 +20,14 @@ libHX_la_SOURCES += ux-file.c ux-mmap.c
 libHX_la_LIBADD += -lws2_32
 endif
 
-libHX_rtcheck_la_SOURCES = rtcheck.c
-libHX_rtcheck_la_LIBADD  = ${libdl_LIBS}
-libHX_rtcheck_la_LDFLAGS = -no-undefined -avoid-version -module
-if WITH_GNU_LD
-libHX_rtcheck_la_LDFLAGS += -Wl,--version-script=${srcdir}/libHX.map
-endif
-
-EXTRA_DIST = internal.h map_int.h libHX.map
+EXTRA_DIST = internal.h map_int.h libHX.map uxcompat.h analyze.sh
 
 check_PROGRAMS     = tc-compile tc-cast tc-deque tc-dir tc-format tc-io \
                      tc-list tc-list2 tc-map tc-memmem tc-misc tc-netio \
                      tc-option tc-proc tc-rand tc-realpath \
                      tc-shconfig tc-socket tc-strchr2 tc-string tc-strquote \
                      tc-switchuser tc-time
-TESTS              = tc-format tc-strchr2 tc-strquote
+TESTS              = tc-format tc-option tc-strchr2 tc-string tc-strquote
 tc_cast_CFLAGS     = ${AM_CFLAGS} -std=gnu99
 tc_cast_LDADD      = libHX.la -lm
 tc_compile_LDADD   = libHX.la
diff --git a/src/Makefile.in b/src/Makefile.in
index d349749..7e1bd81 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -90,11 +90,9 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-@HAVE_DLFCN_H_TRUE@am__append_1 = libHX_rtcheck.la
-@WITH_GNU_LD_TRUE@am__append_2 = -Wl,--version-script=${srcdir}/libHX.map
-@MINGW32_TRUE@am__append_3 = ux-file.c ux-mmap.c
-@MINGW32_TRUE@am__append_4 = -lws2_32
-@WITH_GNU_LD_TRUE@am__append_5 = -Wl,--version-script=${srcdir}/libHX.map
+@WITH_GNU_LD_TRUE@am__append_1 = -Wl,--version-script=${srcdir}/libHX.map
+@MINGW32_TRUE@am__append_2 = ux-file.c ux-mmap.c
+@MINGW32_TRUE@am__append_3 = -lws2_32
 check_PROGRAMS = tc-compile$(EXEEXT) tc-cast$(EXEEXT) \
 	tc-deque$(EXEEXT) tc-dir$(EXEEXT) tc-format$(EXEEXT) \
 	tc-io$(EXEEXT) tc-list$(EXEEXT) tc-list2$(EXEEXT) \
@@ -104,15 +102,15 @@ check_PROGRAMS = tc-compile$(EXEEXT) tc-cast$(EXEEXT) \
 	tc-socket$(EXEEXT) tc-strchr2$(EXEEXT) tc-string$(EXEEXT) \
 	tc-strquote$(EXEEXT) tc-switchuser$(EXEEXT) tc-time$(EXEEXT) \
 	$(am__EXEEXT_1)
-TESTS = tc-format$(EXEEXT) tc-strchr2$(EXEEXT) tc-strquote$(EXEEXT) \
-	$(am__EXEEXT_2)
-@HAVE_CXX_TRUE@am__append_6 = tx-compile tx-cast tx-deque tx-dir \
+TESTS = tc-format$(EXEEXT) tc-option$(EXEEXT) tc-strchr2$(EXEEXT) \
+	tc-string$(EXEEXT) tc-strquote$(EXEEXT) $(am__EXEEXT_2)
+@HAVE_CXX_TRUE@am__append_4 = tx-compile tx-cast tx-deque tx-dir \
 @HAVE_CXX_TRUE@                     tx-intdiff tx-list tx-list2 \
 @HAVE_CXX_TRUE@                     tx-misc tx-netio \
 @HAVE_CXX_TRUE@                     tx-option tx-proc tx-rand tx-strchr2 tx-string \
 @HAVE_CXX_TRUE@                     tx-strquote tx-time
 
-@HAVE_CXX_TRUE@am__append_7 = tx-strchr2 tx-strquote
+@HAVE_CXX_TRUE@am__append_5 = tx-strchr2 tx-strquote
 subdir = src
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/gcc4_visibility.m4 \
@@ -182,14 +180,6 @@ am__v_lt_1 =
 libHX_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(libHX_la_LDFLAGS) $(LDFLAGS) -o $@
-libHX_rtcheck_la_DEPENDENCIES = $(am__DEPENDENCIES_1)
-am_libHX_rtcheck_la_OBJECTS = rtcheck.lo
-libHX_rtcheck_la_OBJECTS = $(am_libHX_rtcheck_la_OBJECTS)
-libHX_rtcheck_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC \
-	$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
-	$(AM_CFLAGS) $(CFLAGS) $(libHX_rtcheck_la_LDFLAGS) $(LDFLAGS) \
-	-o $@
-@HAVE_DLFCN_H_TRUE@am_libHX_rtcheck_la_rpath = -rpath $(libdir)
 tc_cast_SOURCES = tc-cast.c
 tc_cast_OBJECTS = tc_cast-tc-cast.$(OBJEXT)
 tc_cast_DEPENDENCIES = libHX.la
@@ -351,19 +341,18 @@ am__depfiles_remade = ./$(DEPDIR)/deque.Plo ./$(DEPDIR)/dl.Plo \
 	./$(DEPDIR)/format.Plo ./$(DEPDIR)/io.Plo ./$(DEPDIR)/map.Plo \
 	./$(DEPDIR)/mc.Plo ./$(DEPDIR)/misc.Plo ./$(DEPDIR)/opt.Plo \
 	./$(DEPDIR)/proc.Plo ./$(DEPDIR)/rand.Plo \
-	./$(DEPDIR)/rtcheck.Plo ./$(DEPDIR)/socket.Plo \
-	./$(DEPDIR)/string.Plo ./$(DEPDIR)/tc-compile.Po \
-	./$(DEPDIR)/tc-deque.Po ./$(DEPDIR)/tc-dir.Po \
-	./$(DEPDIR)/tc-format.Po ./$(DEPDIR)/tc-io.Po \
-	./$(DEPDIR)/tc-list.Po ./$(DEPDIR)/tc-map.Po \
-	./$(DEPDIR)/tc-memmem.Po ./$(DEPDIR)/tc-misc.Po \
-	./$(DEPDIR)/tc-netio.Po ./$(DEPDIR)/tc-option.Po \
-	./$(DEPDIR)/tc-proc.Po ./$(DEPDIR)/tc-rand.Po \
-	./$(DEPDIR)/tc-realpath.Po ./$(DEPDIR)/tc-shconfig.Po \
-	./$(DEPDIR)/tc-socket.Po ./$(DEPDIR)/tc-strchr2.Po \
-	./$(DEPDIR)/tc-string.Po ./$(DEPDIR)/tc-strquote.Po \
-	./$(DEPDIR)/tc-switchuser.Po ./$(DEPDIR)/tc-time.Po \
-	./$(DEPDIR)/tc_cast-tc-cast.Po \
+	./$(DEPDIR)/socket.Plo ./$(DEPDIR)/string.Plo \
+	./$(DEPDIR)/tc-compile.Po ./$(DEPDIR)/tc-deque.Po \
+	./$(DEPDIR)/tc-dir.Po ./$(DEPDIR)/tc-format.Po \
+	./$(DEPDIR)/tc-io.Po ./$(DEPDIR)/tc-list.Po \
+	./$(DEPDIR)/tc-map.Po ./$(DEPDIR)/tc-memmem.Po \
+	./$(DEPDIR)/tc-misc.Po ./$(DEPDIR)/tc-netio.Po \
+	./$(DEPDIR)/tc-option.Po ./$(DEPDIR)/tc-proc.Po \
+	./$(DEPDIR)/tc-rand.Po ./$(DEPDIR)/tc-realpath.Po \
+	./$(DEPDIR)/tc-shconfig.Po ./$(DEPDIR)/tc-socket.Po \
+	./$(DEPDIR)/tc-strchr2.Po ./$(DEPDIR)/tc-string.Po \
+	./$(DEPDIR)/tc-strquote.Po ./$(DEPDIR)/tc-switchuser.Po \
+	./$(DEPDIR)/tc-time.Po ./$(DEPDIR)/tc_cast-tc-cast.Po \
 	./$(DEPDIR)/tc_list2-tc-list2.Po ./$(DEPDIR)/time.Plo \
 	./$(DEPDIR)/tx-cast.Po ./$(DEPDIR)/tx-compile.Po \
 	./$(DEPDIR)/tx-deque.Po ./$(DEPDIR)/tx-dir.Po \
@@ -411,31 +400,31 @@ AM_V_CXXLD = $(am__v_CXXLD_@AM_V@)
 am__v_CXXLD_ = $(am__v_CXXLD_@AM_DEFAULT_V@)
 am__v_CXXLD_0 = @echo "  CXXLD   " $@;
 am__v_CXXLD_1 = 
-SOURCES = $(libHX_la_SOURCES) $(libHX_rtcheck_la_SOURCES) tc-cast.c \
-	tc-compile.c tc-deque.c tc-dir.c tc-format.c tc-io.c tc-list.c \
-	tc-list2.c tc-map.c tc-memmem.c tc-misc.c tc-netio.c \
-	tc-option.c tc-proc.c tc-rand.c tc-realpath.c tc-shconfig.c \
-	tc-socket.c tc-strchr2.c tc-string.c tc-strquote.c \
-	tc-switchuser.c tc-time.c $(tx_cast_SOURCES) \
-	$(tx_compile_SOURCES) $(tx_deque_SOURCES) $(tx_dir_SOURCES) \
-	$(tx_intdiff_SOURCES) $(tx_list_SOURCES) $(tx_list2_SOURCES) \
-	$(tx_misc_SOURCES) $(tx_netio_SOURCES) $(tx_option_SOURCES) \
-	$(tx_proc_SOURCES) $(tx_rand_SOURCES) $(tx_strchr2_SOURCES) \
-	$(tx_string_SOURCES) $(tx_strquote_SOURCES) $(tx_time_SOURCES)
-DIST_SOURCES = $(am__libHX_la_SOURCES_DIST) \
-	$(libHX_rtcheck_la_SOURCES) tc-cast.c tc-compile.c tc-deque.c \
+SOURCES = $(libHX_la_SOURCES) tc-cast.c tc-compile.c tc-deque.c \
 	tc-dir.c tc-format.c tc-io.c tc-list.c tc-list2.c tc-map.c \
 	tc-memmem.c tc-misc.c tc-netio.c tc-option.c tc-proc.c \
 	tc-rand.c tc-realpath.c tc-shconfig.c tc-socket.c tc-strchr2.c \
 	tc-string.c tc-strquote.c tc-switchuser.c tc-time.c \
-	$(am__tx_cast_SOURCES_DIST) $(am__tx_compile_SOURCES_DIST) \
-	$(am__tx_deque_SOURCES_DIST) $(am__tx_dir_SOURCES_DIST) \
-	$(am__tx_intdiff_SOURCES_DIST) $(am__tx_list_SOURCES_DIST) \
-	$(am__tx_list2_SOURCES_DIST) $(am__tx_misc_SOURCES_DIST) \
-	$(am__tx_netio_SOURCES_DIST) $(am__tx_option_SOURCES_DIST) \
-	$(am__tx_proc_SOURCES_DIST) $(am__tx_rand_SOURCES_DIST) \
-	$(am__tx_strchr2_SOURCES_DIST) $(am__tx_string_SOURCES_DIST) \
-	$(am__tx_strquote_SOURCES_DIST) $(am__tx_time_SOURCES_DIST)
+	$(tx_cast_SOURCES) $(tx_compile_SOURCES) $(tx_deque_SOURCES) \
+	$(tx_dir_SOURCES) $(tx_intdiff_SOURCES) $(tx_list_SOURCES) \
+	$(tx_list2_SOURCES) $(tx_misc_SOURCES) $(tx_netio_SOURCES) \
+	$(tx_option_SOURCES) $(tx_proc_SOURCES) $(tx_rand_SOURCES) \
+	$(tx_strchr2_SOURCES) $(tx_string_SOURCES) \
+	$(tx_strquote_SOURCES) $(tx_time_SOURCES)
+DIST_SOURCES = $(am__libHX_la_SOURCES_DIST) tc-cast.c tc-compile.c \
+	tc-deque.c tc-dir.c tc-format.c tc-io.c tc-list.c tc-list2.c \
+	tc-map.c tc-memmem.c tc-misc.c tc-netio.c tc-option.c \
+	tc-proc.c tc-rand.c tc-realpath.c tc-shconfig.c tc-socket.c \
+	tc-strchr2.c tc-string.c tc-strquote.c tc-switchuser.c \
+	tc-time.c $(am__tx_cast_SOURCES_DIST) \
+	$(am__tx_compile_SOURCES_DIST) $(am__tx_deque_SOURCES_DIST) \
+	$(am__tx_dir_SOURCES_DIST) $(am__tx_intdiff_SOURCES_DIST) \
+	$(am__tx_list_SOURCES_DIST) $(am__tx_list2_SOURCES_DIST) \
+	$(am__tx_misc_SOURCES_DIST) $(am__tx_netio_SOURCES_DIST) \
+	$(am__tx_option_SOURCES_DIST) $(am__tx_proc_SOURCES_DIST) \
+	$(am__tx_rand_SOURCES_DIST) $(am__tx_strchr2_SOURCES_DIST) \
+	$(am__tx_string_SOURCES_DIST) $(am__tx_strquote_SOURCES_DIST) \
+	$(am__tx_time_SOURCES_DIST)
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
     n|no|NO) false;; \
@@ -672,6 +661,7 @@ EGREP = @EGREP@
 ETAGS = @ETAGS@
 EXEEXT = @EXEEXT@
 FGREP = @FGREP@
+FILECMD = @FILECMD@
 GREP = @GREP@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
@@ -775,18 +765,14 @@ top_srcdir = @top_srcdir@
 AM_CPPFLAGS = ${regular_CPPFLAGS} -I${top_srcdir}/include
 AM_CFLAGS = ${regular_CFLAGS}
 AM_CXXFLAGS = ${regular_CXXFLAGS}
-lib_LTLIBRARIES = libHX.la $(am__append_1)
+lib_LTLIBRARIES = libHX.la
 libHX_la_SOURCES = deque.c dl.c format.c io.c map.c mc.c misc.c opt.c \
-	proc.c rand.c socket.c string.c time.c $(am__append_3)
+	proc.c rand.c socket.c string.c time.c $(am__append_2)
 libHX_la_LIBADD = ${libdl_LIBS} -lm ${libpthread_LIBS} ${librt_LIBS} \
-	${libsocket_LIBS} $(am__append_4)
-libHX_la_LDFLAGS = -no-undefined -version-info 38:0:6 $(am__append_2)
+	${libsocket_LIBS} $(am__append_3)
+libHX_la_LDFLAGS = -no-undefined -version-info 39:0:7 $(am__append_1)
 EXTRA_libHX_la_DEPENDENCIES = libHX.map
-libHX_rtcheck_la_SOURCES = rtcheck.c
-libHX_rtcheck_la_LIBADD = ${libdl_LIBS}
-libHX_rtcheck_la_LDFLAGS = -no-undefined -avoid-version -module \
-	$(am__append_5)
-EXTRA_DIST = internal.h map_int.h libHX.map
+EXTRA_DIST = internal.h map_int.h libHX.map uxcompat.h analyze.sh
 tc_cast_CFLAGS = ${AM_CFLAGS} -std=gnu99
 tc_cast_LDADD = libHX.la -lm
 tc_compile_LDADD = libHX.la
@@ -923,9 +909,6 @@ clean-libLTLIBRARIES:
 libHX.la: $(libHX_la_OBJECTS) $(libHX_la_DEPENDENCIES) $(EXTRA_libHX_la_DEPENDENCIES) 
 	$(AM_V_CCLD)$(libHX_la_LINK) -rpath $(libdir) $(libHX_la_OBJECTS) $(libHX_la_LIBADD) $(LIBS)
 
-libHX_rtcheck.la: $(libHX_rtcheck_la_OBJECTS) $(libHX_rtcheck_la_DEPENDENCIES) $(EXTRA_libHX_rtcheck_la_DEPENDENCIES) 
-	$(AM_V_CCLD)$(libHX_rtcheck_la_LINK) $(am_libHX_rtcheck_la_rpath) $(libHX_rtcheck_la_OBJECTS) $(libHX_rtcheck_la_LIBADD) $(LIBS)
-
 tc-cast$(EXEEXT): $(tc_cast_OBJECTS) $(tc_cast_DEPENDENCIES) $(EXTRA_tc_cast_DEPENDENCIES) 
 	@rm -f tc-cast$(EXEEXT)
 	$(AM_V_CCLD)$(tc_cast_LINK) $(tc_cast_OBJECTS) $(tc_cast_LDADD) $(LIBS)
@@ -1098,7 +1081,6 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/opt.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/proc.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rand.Plo@am__quote@ # am--include-marker
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rtcheck.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/socket.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/string.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tc-compile.Po@am__quote@ # am--include-marker
@@ -1446,6 +1428,13 @@ tc-format.log: tc-format$(EXEEXT)
 	--log-file $$b.log --trs-file $$b.trs \
 	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
 	"$$tst" $(AM_TESTS_FD_REDIRECT)
+tc-option.log: tc-option$(EXEEXT)
+	@p='tc-option$(EXEEXT)'; \
+	b='tc-option'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
 tc-strchr2.log: tc-strchr2$(EXEEXT)
 	@p='tc-strchr2$(EXEEXT)'; \
 	b='tc-strchr2'; \
@@ -1453,6 +1442,13 @@ tc-strchr2.log: tc-strchr2$(EXEEXT)
 	--log-file $$b.log --trs-file $$b.trs \
 	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
 	"$$tst" $(AM_TESTS_FD_REDIRECT)
+tc-string.log: tc-string$(EXEEXT)
+	@p='tc-string$(EXEEXT)'; \
+	b='tc-string'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
 tc-strquote.log: tc-strquote$(EXEEXT)
 	@p='tc-strquote$(EXEEXT)'; \
 	b='tc-strquote'; \
@@ -1581,7 +1577,6 @@ distclean: distclean-am
 	-rm -f ./$(DEPDIR)/opt.Plo
 	-rm -f ./$(DEPDIR)/proc.Plo
 	-rm -f ./$(DEPDIR)/rand.Plo
-	-rm -f ./$(DEPDIR)/rtcheck.Plo
 	-rm -f ./$(DEPDIR)/socket.Plo
 	-rm -f ./$(DEPDIR)/string.Plo
 	-rm -f ./$(DEPDIR)/tc-compile.Po
@@ -1681,7 +1676,6 @@ maintainer-clean: maintainer-clean-am
 	-rm -f ./$(DEPDIR)/opt.Plo
 	-rm -f ./$(DEPDIR)/proc.Plo
 	-rm -f ./$(DEPDIR)/rand.Plo
-	-rm -f ./$(DEPDIR)/rtcheck.Plo
 	-rm -f ./$(DEPDIR)/socket.Plo
 	-rm -f ./$(DEPDIR)/string.Plo
 	-rm -f ./$(DEPDIR)/tc-compile.Po
diff --git a/src/analyze.sh b/src/analyze.sh
new file mode 100755
index 0000000..042998f
--- /dev/null
+++ b/src/analyze.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+f="--analyze -Xanalyzer -analyzer-output=text -Wall -g3"
+make -k check CC=clang CXX=clang++ CFLAGS="$f" CXXFLAGS="$f"
diff --git a/src/internal.h b/src/internal.h
index 0465d81..f7d83d8 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -11,15 +11,12 @@
 
 #include "config.h"
 #include <stdint.h>
+#include <libHX/cast.h>
 #include <libHX/defs.h>
 #include <libHX/string.h>
 
 #ifdef __cplusplus
 	/* Only for our dual C/C++ testsuites */
-#	define const_cast(type, expr)       const_cast<type>(expr)
-#	define const_cast1(type, expr)      const_cast<type>(expr)
-#	define const_cast2(type, expr)      const_cast<type>(expr)
-#	define const_cast3(type, expr)      const_cast<type>(expr)
 #	define dynamic_cast(type, expr)     dynamic_cast<type>(expr)
 #	define signed_cast(type, expr)      signed_cast<type>(expr)
 #	define reinterpret_cast(type, expr) reinterpret_cast<type>(expr)
diff --git a/src/libHX.map b/src/libHX.map
index 37bfe0f..374a881 100644
--- a/src/libHX.map
+++ b/src/libHX.map
@@ -178,3 +178,8 @@ LIBHX_4.16 {
 global:
 	HX_strtoull_nsec;
 } LIBHX_4.15;
+
+LIBHX_4.18 {
+global:
+	HX_getopt5;
+} LIBHX_4.16;
diff --git a/src/opt.c b/src/opt.c
index f91785d..ab482ad 100644
--- a/src/opt.c
+++ b/src/opt.c
@@ -20,6 +20,7 @@
 #include <libHX/misc.h>
 #include <libHX/option.h>
 #include <libHX/string.h>
+#undef HX_getopt
 #include "internal.h"
 
 /* Definitions */
@@ -697,16 +698,19 @@ static int HX_getopt_normal(const char *cur, const struct HX_getopt_vars *par)
 	return HXOPT_S_NORMAL | HXOPT_I_ADVARG;
 }
 
-EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
-    const char ***argv, unsigned int flags)
+EXPORT_SYMBOL int HX_getopt5(const struct HXoption *table, char **orig_argv,
+    int *new_argc, char ***new_argv, unsigned int flags)
 {
 	struct HX_getopt_vars ps;
-	const char **opt = *argv;
+	const char **opt = const_cast(const char **, orig_argv);
 	int state = HXOPT_S_NORMAL;
 	int ret = -ENOMEM;
-	unsigned int argk;
-	const char *cur;
+	unsigned int argk = 0;
 
+	if (new_argc != nullptr)
+		*new_argc = 0;
+	if (new_argv != nullptr)
+		*new_argv = nullptr;
 	memset(&ps, 0, sizeof(ps));
 	ps.remaining = HXdeque_init();
 	if (ps.remaining == NULL) {
@@ -714,7 +718,7 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 		goto out;
 	}
 	ps.flags = flags;
-	ps.arg0  = **argv;
+	ps.arg0  = *opt;
 	ps.cbi.table = table;
 
 	if (*opt != NULL) {
@@ -733,7 +737,7 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 
 	if (posix_me_harder())
 		ps.flags |= HXOPT_RQ_ORDER;
-	for (cur = *opt; cur != NULL; ) {
+	for (const char *cur = *opt; cur != NULL; ) {
 		if (state == HXOPT_S_TWOLONG)
 			state = HX_getopt_twolong(opt, &ps);
 		else if (state == HXOPT_S_LONG)
@@ -764,33 +768,19 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 		state &= ~HXOPT_I_MASK;
 	}
 
-	if (!(ps.flags & HXOPT_KEEP_ARGV)) {
-		const char **nvec = reinterpret_cast(const char **,
-		                    HXdeque_to_vec(ps.remaining, &argk));
-		if (nvec == NULL) {
+	if (new_argv != nullptr) {
+		*new_argv = reinterpret_cast(char **, HXdeque_to_vec(ps.remaining, &argk));
+		if (*new_argv == nullptr) {
 			ret = -errno;
 			goto out;
 		}
-		if (ps.flags & HXOPT_DESTROY_OLD)
-			/*
-			 * Only the "true, original" argv is stored on the
-			 * stack - the argv that HX_getopt() produces is on
-			 * the heap, so the %HXOPT_DESTROY_OLD flag should be
-			 * passed when you use passthrough chaining, i.e. all
-			 * but the first call to HX_getopt() should have this
-			 * set.
-			 */
-			HX_zvecfree(const_cast2(char **, *argv));
-
-		*argv = nvec;
-		if (argc != NULL)
-			*argc = argk;
-		/* pointers are owned by nvec/argv now */
+		if (new_argc != nullptr)
+			*new_argc = argk;
+		/* pointers are owned by new_argv now, so free only the deque head */
 		HXdeque_free(ps.remaining);
 		ps.remaining = nullptr;
 	}
 	ret = HXOPT_ERR_SUCCESS;
-
  out:
 	if (ret == HXOPT_ERR_SUCCESS) {
 	} else if (ret < 0) {
@@ -808,6 +798,26 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 	return ret;
 }
 
+EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
+    char ***argv, unsigned int flags)
+{
+	int new_argc = 0;
+	char **new_argv = nullptr;
+	int ret = HX_getopt5(table, *argv, &new_argc,
+	          flags & HXOPT_KEEP_ARGV ? nullptr : &new_argv, flags);
+	if (ret != HXOPT_ERR_SUCCESS)
+		return ret;
+	if (flags & HXOPT_KEEP_ARGV)
+		// NO_CREATE_NEW / DESTROY_NEW
+		new_argv = *argv;
+	else if (flags & HXOPT_DESTROY_OLD)
+		HX_zvecfree(*argv);
+	if (argc != nullptr)
+		*argc = new_argc;
+	*argv = new_argv;
+	return ret;
+}
+
 EXPORT_SYMBOL void HX_getopt_help(const struct HXoptcb *cbi, FILE *nfp)
 {
 	FILE *fp = (nfp == NULL) ? stderr : nfp;
diff --git a/src/proc.c b/src/proc.c
index 801023b..c8957b6 100644
--- a/src/proc.c
+++ b/src/proc.c
@@ -103,7 +103,7 @@ EXPORT_SYMBOL enum HXproc_su_status HXproc_switch_user(const char *user, const c
 
 #else
 
-EXPORT_SYMBOL int HXproc_switch_user(const char *user, const char *group)
+EXPORT_SYMBOL enum HXproc_su_status HXproc_switch_user(const char *user, const char *group)
 {
 	return -ENOSYS;
 }
diff --git a/src/rtcheck.c b/src/rtcheck.c
deleted file mode 100644
index 6f04baa..0000000
--- a/src/rtcheck.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- *	Additional runtime checks
- *	Copyright Jan Engelhardt, 2011
- *
- *	This file is part of libHX. libHX is free software; you can
- *	redistribute it and/or modify it under the terms of the GNU Lesser
- *	General Public License as published by the Free Software Foundation;
- *	either version 2.1 or (at your option) any later version.
- *
- *	libHX_rtcheck.so is a library supposed to be used together with the
- *	LD_PRELOAD environment variable to dynamically add extra checks.
- */
-#define _GNU_SOURCE 1
-#ifdef HAVE_DLFCN_H
-#include <dlfcn.h>
-#ifdef RTLD_NEXT
-
-#include <pthread.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <libHX.h>
-#include "internal.h"
-
-#define call_next(f) \
-	((__typeof__(f) *)dlsym(RTLD_NEXT, #f))
-
-#define stub_head(f, args, invoke) \
-	EXPORT_SYMBOL __typeof__(f invoke) f args \
-	{ \
-		if (HXrefchk_count <= 0) \
-			fprintf(stderr, "%s: HX_init has not been called!\n", \
-			        __func__);
-
-#define stub_tail(f, params) \
-		return call_next(f) params; \
-	}
-
-#define stub(f, args, invoke, params) \
-	stub_head(f, args, invoke) \
-	stub_tail(f, params)
-
-#define stubv(f, args, params) \
-	EXPORT_SYMBOL void f args \
-	{ \
-		if (HXrefchk_count <= 0) \
-			fprintf(stderr, "%s: HX_init has not been called!\n", \
-			        __func__); \
-		call_next(f) params; \
-	}
-
-#define stub0(f)        stub(f, (void), (), ())
-#define stub1(f, args)  stub(f, args, (0), (a))
-#define stub1v(f, args) stubv(f, args, (a))
-#define stub2(f, args)  stub(f, args, (0, 0), (a, b))
-#define stub2v(f, args) stubv(f, args, (a, b))
-#define stub3(f, args)  stub(f, args, (0, 0, 0), (a, b, c))
-#define stub3v(f, args) stubv(f, args, (a, b, c))
-#define stub4(f, args)  stub(f, args, (0, 0, 0, 0), (a, b, c, d))
-#define stub5(f, args)  stub(f, args, (0, 0, 0, 0, 0), (a, b, c, d, e))
-
-static pthread_mutex_t HXrefchk_lock = PTHREAD_MUTEX_INITIALIZER;
-static unsigned long HXrefchk_count;
-
-EXPORT_SYMBOL int HX_init(void)
-{
-	/*
-	 * The real HX_init has its own reference count check, but that
-	 * variable is not exported that we could test it, so the counter needs
-	 * to be replicated here.
-	 */
-	pthread_mutex_lock(&HXrefchk_lock);
-	if (HXrefchk_count == 0) {
-		printf("# " PACKAGE_NAME " " PACKAGE_VERSION
-		       " runtime checker active\n");
-		call_next(HX_init)();
-	}
-	++HXrefchk_count;
-	pthread_mutex_unlock(&HXrefchk_lock);
-	return 1;
-}
-
-EXPORT_SYMBOL void HX_exit(void)
-{
-	pthread_mutex_lock(&HXrefchk_lock);
-	if (HXrefchk_count == 0)
-		fprintf(stderr, "%s: reference count is already zero!\n", __func__);
-	else
-		--HXrefchk_count;
-	pthread_mutex_unlock(&HXrefchk_lock);
-	call_next(HX_exit)();
-}
-
-/* deque.h */
-stub0(HXdeque_init);
-stub2(HXdeque_push, (struct HXdeque *a, const void *b));
-stub2(HXdeque_unshift, (struct HXdeque *a, const void *b));
-stub1(HXdeque_pop, (struct HXdeque *a));
-stub1(HXdeque_shift, (struct HXdeque *a));
-stub2(HXdeque_move, (struct HXdeque_node *a, struct HXdeque_node *b));
-stub2(HXdeque_find, (struct HXdeque *a, const void *b));
-stub2(HXdeque_get, (struct HXdeque *a, const void *b));
-stub1(HXdeque_del, (struct HXdeque_node *a));
-stub1v(HXdeque_free, (struct HXdeque *a));
-stub2v(HXdeque_genocide2, (struct HXdeque *a, void (*b)(void *)));
-stub2(HXdeque_to_vec, (const struct HXdeque *a, unsigned int *b));
-
-/* io.h */
-stub1(HXdir_open, (const char *a));
-stub1(HXdir_read, (struct HXdir *a));
-stub1v(HXdir_close, (struct HXdir *a));
-/* HX_copy_dir: has varargs */
-/* HX_copy_file: has varargs */
-stub2(HX_mkdir, (const char *a, unsigned int b));
-stub2(HX_readlink, (hxmc_t **a, const char *b));
-stub3(HX_realpath, (hxmc_t **a, const char *b, unsigned int c));
-stub1(HX_rrmdir, (const char *a));
-
-stub3(HXio_fullread, (int a, void *b, size_t c));
-stub3(HXio_fullwrite, (int a, const void *b, size_t c));
-
-/* map.h */
-stub2(HXmap_init, (enum HXmap_type a, unsigned int b));
-stub5(HXmap_init5, (enum HXmap_type a, unsigned int b,
-	const struct HXmap_ops *c, size_t d, size_t e));
-stub3(HXmap_add, (struct HXmap *a, const void *b, const void *c));
-stub2(HXmap_find, (const struct HXmap *a, const void *b));
-stub2(HXmap_get, (const struct HXmap *a, const void *b));
-stub2(HXmap_del, (struct HXmap *a, const void *b));
-stub1(HXmap_keysvalues, (const struct HXmap *a));
-stub2(HXmap_travinit, (const struct HXmap *a, unsigned int b));
-stub1(HXmap_traverse, (struct HXmap_trav *a));
-stub1v(HXmap_travfree, (struct HXmap_trav *a));
-stub3v(HXmap_qfe, (const struct HXmap *a,
-	bool (*b)(const struct HXmap_node *, void *), void *c));
-stub1v(HXmap_free, (struct HXmap *a));
-
-/* misc.h */
-stub1(HX_dlopen, (const char *a));
-stub2(HX_dlsym, (void *a, const char *b));
-stub1v(HX_dlclose, (void *a));
-stub0(HX_dlerror);
-
-stub1(HX_ffs, (unsigned long a));
-stub1(HX_fls, (unsigned long a));
-stub3(HX_hexdump, (FILE *a, const void *b, unsigned int c));
-stub3(HX_timespec_add, (struct timespec *a, const struct timespec *b,
-	const struct timespec *c));
-stub1(HX_timespec_isneg, (const struct timespec *a));
-stub3(HX_timespec_mul, (struct timespec *a, const struct timespec *b, int c));
-stub3(HX_timespec_mulf, (struct timespec *a, const struct timespec *b,
-	double c));
-stub2(HX_timespec_neg, (struct timespec *a, const struct timespec *b));
-stub3(HX_timespec_sub, (struct timespec *a, const struct timespec *b,
-	const struct timespec *c));
-stub3(HX_timeval_sub, (struct timeval *a, const struct timeval *b,
-	const struct timeval *c));
-stub3(HX_time_compare, (const struct stat *a, const struct stat *b, char c));
-stub1v(HX_zvecfree, (char **a));
-
-stub0(HX_rand);
-stub2(HX_irand, (unsigned int a, unsigned int b));
-stub2(HX_drand, (double a, double b));
-
-/* option.h */
-stub0(HXformat_init);
-stub1v(HXformat_free, (struct HXformat_map *a));
-stub4(HXformat_add, (struct HXformat_map *a, const char *b, const void *c,
-	unsigned int d));
-stub3(HXformat_aprintf, (const struct HXformat_map *a, hxmc_t **b,
-	const char *c));
-stub4(HXformat_sprintf, (const struct HXformat_map *a, char *b, size_t c,
-	const char *d));
-stub3(HXformat_fprintf, (const struct HXformat_map *a, FILE *b,
-	const char *c));
-
-stub4(HX_getopt, (const struct HXoption *a, int *b, const char ***c,
-	unsigned int d));
-/* HX_getopt_help: not really public */
-/* HX_getopt_help_cb: not really public */
-/* HX_getopt_usage: not really public */
-/* HX_getopt_usage_cb: not really public */
-stub2(HX_shconfig, (const char *a, const struct HXoption *b));
-stub1(HX_shconfig_map, (const char *a));
-stub4(HX_shconfig_pv, (const char **a, const char *b, const struct HXoption *c,
-	unsigned int d));
-stub1v(HX_shconfig_free, (const struct HXoption *a));
-
-/* proc.h */
-stub2(HXproc_run_async, (const char *const *a, struct HXproc *b));
-stub2(HXproc_run_sync, (const char *const *a, unsigned int b));
-stub1(HXproc_wait, (struct HXproc *a));
-
-/* string.h */
-static __inline__ struct memcont *HXmc_base(const hxmc_t *p)
-{
-	return containerof(p, struct memcont, data);
-}
-
-static __inline__ void HXmc_check(const char *func, const void *cv)
-{
-	const struct memcont *c;
-
-	if (cv == NULL)
-		return;
-	c = HXmc_base(cv);
-	if (c->id != HXMC_IDENT)
-		fprintf(stderr, "%s: %p is not a HXmc object!\n", func, cv);
-}
-
-stub1(HXmc_strinit, (const char *a));
-stub2(HXmc_meminit, (const void *a, size_t b));
-
-stub_head(HXmc_strcpy, (hxmc_t **a, const char *b), (0, 0))
-{
-	if (*a != NULL)
-		HXmc_check(__func__, *a);
-}
-stub_tail(HXmc_strcpy, (a, b))
-
-stub_head(HXmc_memcpy, (hxmc_t **a, const void *b, size_t c), (0, 0, 0))
-{
-	if (*a != NULL)
-		HXmc_check(__func__, *a);
-}
-stub_tail(HXmc_memcpy, (a, b, c))
-
-stub_head(HXmc_length, (const hxmc_t *a), (0))
-{
-	if (a != NULL)
-		HXmc_check(__func__, a);
-}
-stub_tail(HXmc_length, (a))
-
-stub2(HXmc_setlen, (hxmc_t **a, size_t b));
-stub2(HXmc_trunc, (hxmc_t **a, size_t b));
-stub2(HXmc_strcat, (hxmc_t **a, const char *b));
-stub3(HXmc_memcat, (hxmc_t **a, const void *b, size_t c));
-stub2(HXmc_strpcat, (hxmc_t **a, const char *b));
-stub3(HXmc_mempcat, (hxmc_t **a, const void *b, size_t c));
-stub3(HXmc_strins, (hxmc_t **a, size_t b, const char *c));
-stub4(HXmc_memins, (hxmc_t **a, size_t b, const void *c, size_t d));
-stub3(HXmc_memdel, (hxmc_t *a, size_t b, size_t c));
-stub1v(HXmc_free, (hxmc_t *a));
-stub1v(HXmc_zvecfree, (hxmc_t **a));
-
-stub1(HX_basename, (const char *a));
-stub1(HX_basename_exact, (const char *a));
-stub1(HX_chomp, (char *a));
-stub1(HX_dirname, (const char *a));
-stub2(HX_getl, (hxmc_t **a, FILE *b));
-stub4(HX_memmem, (const void *a, size_t b, const void *c, size_t d));
-stub4(HX_split, (const char *a, const char *b, int *c, int d));
-stub4(HX_split_inplace, (char *a, const char *b, int *c, int d));
-stub4(HX_split_fixed, (char *a, const char *b, int c, char **d));
-stub1(HX_stpltrim, (const char *a));
-stub1(HX_stprtrim, (char *a));
-stub3(HX_strbchr, (const char *a, const char *b, char c));
-stub2(HX_strclone, (char **a, const char *b));
-stub1(HX_strlower, (char *a));
-stub1(HX_strltrim, (char *a));
-stub3(HX_strmid, (const char *a, long b, long c));
-stub2(HX_strndup, (const char *a, size_t b));
-stub2(HX_strnlen, (const char *a, size_t b));
-stub3(HX_strquote, (const char *a, unsigned int b, char **c));
-stub2(HX_strrcspn, (const char *a, const char *b));
-stub1(HX_strrev, (char *a));
-stub1(HX_strrtrim, (char *a));
-stub2(HX_strsep, (char **a, const char *b));
-stub2(HX_strsep2, (char **a, const char *b));
-stub1(HX_strupper, (char *a));
-
-#endif /* RTLD_NEXT */
-#endif /* HAVE_DLFCN_H */
diff --git a/src/socket.c b/src/socket.c
index e2ad9ed..9fdd903 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -394,13 +394,15 @@ EXPORT_SYMBOL int HX_socket_from_env(const struct addrinfo *ai, const char *intf
 		}
 		top_fd = x;
 	}
-	for (int fd = 3; fd < top_fd; ++fd)
-		if (try_sk_from_env(fd, ai, intf) == fd) {
+	for (int fd = 3; fd < top_fd; ++fd) {
+		if (try_sk_from_env(fd, ai, intf) != fd)
+			continue;
 #ifdef SOCK_CLOEXEC
-			fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
+		if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC) != 0)
+			/* ignore */;
 #endif
-			return fd;
-		}
+		return fd;
+	}
 	errno = ENOENT;
 	return -1;
 }
diff --git a/src/string.c b/src/string.c
index 4abd694..06066ce 100644
--- a/src/string.c
+++ b/src/string.c
@@ -980,6 +980,7 @@ EXPORT_SYMBOL double HX_strtod_unit(const char *s, char **out_end, unsigned int
 	if (end == s) {
 		if (out_end != nullptr)
 			*out_end = end;
+		errno = 0;
 		return q;
 	}
 	while (HX_isspace(*end))
@@ -988,10 +989,12 @@ EXPORT_SYMBOL double HX_strtod_unit(const char *s, char **out_end, unsigned int
 	if (pwr == 0) {
 		if (out_end != nullptr)
 			*out_end = const_cast(char *, end);
+		errno = 0;
 		return q;
 	}
 	if (out_end != nullptr)
 		*out_end = const_cast(char *, end + 1);
+	errno = 0;
 	return q * pow(exponent, pwr);
 }
 
@@ -1001,17 +1004,45 @@ EXPORT_SYMBOL unsigned long long HX_strtoull_unit(const char *s,
 	char *end;
 	unsigned long long ipart;
 	unsigned int pwr = 0;
+	bool neg = false;
 
 	while (HX_isspace(*s))
 		++s;
+	if (*s == '-') {
+		/*
+		 * "-5k": While (-5ULL) * 1000 is the same as (-5000ULL) under
+		 * modulo arithmetic, the expression `ipart >= ULLONG_MAX /
+		 * exponent` depends on seeing the true value (5 rather than
+		 * (-5ULL).)
+		 */
+		neg = true;
+		++s;
+	}
+	errno = 0;
 	ipart = strtoull(s, &end, 10);
+	if (ipart == ULLONG_MAX && errno == ERANGE)
+		return ipart;
 	if (*end == '.') {
 		double q = HX_strtod_unit(s, out_end, exponent);
 		bool lo_ok = q >= nextafter(-static_cast(double, ULLONG_MAX), 0);
 		bool hi_ok = q <= nextafter(static_cast(double, ULLONG_MAX), 0);
-		if (!hi_ok || !lo_ok)
+		if (!hi_ok || !lo_ok) {
+			errno = ERANGE;
 			return ULLONG_MAX;
-		return q;
+		}
+		/*
+		 * https://eel.is/c++draft/conv.fpint: values unrepresentable
+		 * in the target type (such as forcing -5.2f into a uint) is
+		 * UB. Thus check for range and apply the negation after the
+		 * conversion to ULL.
+		 */
+		if (q > ULLONG_MAX) {
+			errno = ERANGE;
+			return ULLONG_MAX;
+		}
+		unsigned long long r = q;
+		errno = 0;
+		return neg ? -r : r;
 	}
 	if (exponent == 0)
 		exponent = 1000;
@@ -1021,7 +1052,8 @@ EXPORT_SYMBOL unsigned long long HX_strtoull_unit(const char *s,
 	if (pwr == 0) {
 		if (out_end != nullptr)
 			*out_end = end;
-		return ipart;
+		errno = 0;
+		return neg ? -ipart: ipart;
 	}
 	if (out_end != nullptr)
 		*out_end = const_cast(char *, end + 1);
@@ -1032,11 +1064,13 @@ EXPORT_SYMBOL unsigned long long HX_strtoull_unit(const char *s,
 		}
 		ipart *= exponent;
 	}
-	return ipart;
+	errno = 0;
+	return neg ? -ipart : ipart;
 }
 
-#define SECONDS_PER_YEAR 31557600
-#define SECONDS_PER_MONTH 2629800
+/* Numbers also used by systemd — the focus is on longterm averages */
+#define SECONDS_PER_YEAR 31557600 /* 365.25 days */
+#define SECONDS_PER_MONTH 2629800 /* 1/12th of that year = 30.4375 days */
 #define NSEC_PER_SECOND 1000000000ULL
 
 static const struct {
@@ -1071,7 +1105,6 @@ static const struct {
 	{"µs",      3, 0, 1000},
 	{"nsec",    4, 0, 1},
 	{"ns",      2, 0, 1},
-	{"",        0, 1, NSEC_PER_SECOND},
 };
 
 static unsigned long long HX_strtoull_time(const char *s, char **out_end, bool nsec)
@@ -1081,10 +1114,13 @@ static unsigned long long HX_strtoull_time(const char *s, char **out_end, bool n
 	while (*s != '\0') {
 		while (HX_isspace(*s))
 			++s;
+		const char *numbegin = s;
 		if (*s == '-')
 			break;
 		char *end = nullptr;
 		unsigned long long num = strtoull(s, &end, 10);
+		if (num == ULLONG_MAX && errno == ERANGE)
+			return num;
 		double frac = 0;
 		bool have_frac = *end == '.';
 		if (have_frac)
@@ -1100,13 +1136,25 @@ static unsigned long long HX_strtoull_time(const char *s, char **out_end, bool n
 			    time_multiplier[i].len) == 0 &&
 			    !HX_isalpha(s[time_multiplier[i].len]))
 				break;
-		if (i == ARRAY_SIZE(time_multiplier))
+		if (i == ARRAY_SIZE(time_multiplier)) {
+			if ((!have_frac && num == 0) || (have_frac && frac == 0))
+				/* 0 is the same no matter what unit, take it */
+				continue;
+			s = numbegin;
 			break;
+		}
 		unsigned long long mult = nsec ? time_multiplier[i].ns_mult : time_multiplier[i].s_mult;
-		if (have_frac)
+		if (have_frac) {
 			quant += frac * mult;
-		else
+		} else {
+			if (mult > 0 && num >= ULLONG_MAX / mult) {
+				if (out_end != nullptr)
+					*out_end = const_cast(char *, numbegin);
+				errno = ERANGE;
+				return ULLONG_MAX;
+			}
 			quant += num * mult;
+		}
 		s += time_multiplier[i].len;
 	}
 	if (out_end != nullptr)
diff --git a/src/tc-dir.c b/src/tc-dir.c
index ec44977..7f987bc 100644
--- a/src/tc-dir.c
+++ b/src/tc-dir.c
@@ -22,7 +22,7 @@ static void lookatdir(const char *dname)
 	HXdir_close(dh);
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	if (HX_init() <= 0)
 		return EXIT_FAILURE;
diff --git a/src/tc-format.c b/src/tc-format.c
index ed8e6d4..5c5c6e6 100644
--- a/src/tc-format.c
+++ b/src/tc-format.c
@@ -73,7 +73,7 @@ static int t_format(int argc)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret;
 
diff --git a/src/tc-list.c b/src/tc-list.c
index e8a30b6..d31a5c7 100644
--- a/src/tc-list.c
+++ b/src/tc-list.c
@@ -10,6 +10,7 @@
 #include <libHX/list.h>
 #include <libHX/init.h>
 #include <libHX/misc.h>
+#include "internal.h"
 
 struct text_object {
 	struct HXlist_head list;
@@ -64,13 +65,14 @@ static void l_traverse(void)
 static void l_dump(bool pop)
 {
 	static const char *const msg[] = {"Shifting", "Popping"};
-	struct text_object *obj;
 	unsigned int i = 0;
 
-	while ((obj = (pop ?
-	    HXclist_pop(&strings_ct, struct text_object, list) :
-	    HXclist_shift(&strings_ct, struct text_object, list)
-	    )) != NULL) {
+	while (true) {
+		struct text_object *obj = pop ?
+			HXclist_pop(&strings_ct, struct text_object, list) :
+			HXclist_shift(&strings_ct, struct text_object, list);
+		if (obj == nullptr)
+			break;
 		printf("%s item %u (\"%s\")\n", msg[pop], ++i, obj->id);
 #ifdef __cplusplus
 		delete obj;
@@ -138,7 +140,7 @@ static void l_shift(void)
 #pragma GCC diagnostic pop
 }
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	unsigned int max = 10;
 
@@ -157,10 +159,10 @@ static int runner(int argc, const char **argv)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-memmem.c b/src/tc-memmem.c
index 1a56f1b..6115aec 100644
--- a/src/tc-memmem.c
+++ b/src/tc-memmem.c
@@ -78,7 +78,7 @@ static int runner(void)
 int main(void)
 {
 	int ret = runner();
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-misc.c b/src/tc-misc.c
index d422f21..1677807 100644
--- a/src/tc-misc.c
+++ b/src/tc-misc.c
@@ -8,7 +8,7 @@
 #include <libHX/init.h>
 #include <libHX/misc.h>
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	unsigned int n;
 	struct stat sa, sb;
@@ -43,10 +43,10 @@ static int runner(int argc, const char **argv)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-option.c b/src/tc-option.c
index 83271e0..8e99b19 100644
--- a/src/tc-option.c
+++ b/src/tc-option.c
@@ -11,6 +11,7 @@
 #include <libHX/init.h>
 #include <libHX/map.h>
 #include <libHX/option.h>
+#include "internal.h"
 
 static int opt_v = 0, opt_mask = 0;
 static char *opt_kstr = NULL;
@@ -64,45 +65,69 @@ static struct HXoption table[] = {
 	HXOPT_TABLEEND,
 };
 
-static void dump_argv(const char **v)
+static void dump_argv(char **v)
 {
 	while (*v != NULL)
 		printf("[%s] ", *v++);
 	printf("\n");
 }
 
-static void t_pthru(void)
+static int t_pthru(void)
 {
 	const char *argv[] = {
 		"ARGV0", "-Zomg", "-GZfoo", "bar",
 		"--unknown-f=13.37", "--unknown-a",
 		"foo", "bar", NULL
 	};
-	const char **argp = argv;
-	int argc = ARRAY_SIZE(argv) - 1;
+	char **nargv = nullptr;
+	int nargc = 0;
 
 	printf("PTHRU test:\n");
-	HX_getopt(table, &argc, &argp, HXOPT_USAGEONERR | HXOPT_PTHRU);
-	dump_argv(argp);
+	if (HX_getopt5(table, const_cast(char **, argv), &nargc, &nargv,
+	    HXOPT_USAGEONERR | HXOPT_PTHRU) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
+	printf("argc = %d\n", nargc);
+	dump_argv(nargv);
 	printf("\n");
+	HX_zvecfree(nargv);
+	return EXIT_SUCCESS;
 }
 
-static void t_empty_argv(void)
+static int t_empty_argv(void)
 {
-	const char *zero_argv[] = {NULL}, **zero_argp = zero_argv;
-	int zero_argc = 0;
+	char *zero_argv[] = {nullptr};
+	char **new_argv = nullptr;
 
 	printf("Testing argv={NULL}\n");
-	HX_getopt(table, &zero_argc, &zero_argp, HXOPT_USAGEONERR);
+	if (HX_getopt5(table, zero_argv, nullptr, &new_argv,
+	    HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
+	HX_zvecfree(new_argv);
+	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+static int t_keep_argv(void)
 {
-	if (HX_init() <= 0)
+	static const char *const one_argv[] = {"what", nullptr};
+	const char **argv = const_cast2(const char **, one_argv);
+	if (HX_getopt(table, nullptr, &argv, HXOPT_KEEP_ARGV) != HXOPT_ERR_SUCCESS)
 		return EXIT_FAILURE;
-	printf("Return value of HX_getopt: %d\n",
-	       HX_getopt(table, &argc, &argv, HXOPT_USAGEONERR));
-	t_empty_argv();
+	return argv == one_argv ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+static int runner(int argc, char **argv)
+{
+	char **nargv = nullptr;
+	int ret = HX_getopt5(table, argv, &argc, &nargv, HXOPT_USAGEONERR);
+	printf("Return value of HX_getopt: %d\n", ret);
+	if (ret == EXIT_SUCCESS)
+		HX_zvecfree(nargv);
+	ret = t_empty_argv();
+	if (ret != EXIT_SUCCESS)
+		return ret;
+	ret = t_keep_argv();
+	if (ret != EXIT_SUCCESS)
+		return ret;
 
 	printf("Either-or is: %s\n", opt_eitheror[opt_dst]);
 	printf("values: D=%lf I=%d L=%ld S=%s\n",
@@ -110,9 +135,16 @@ int main(int argc, const char **argv)
 	printf("Verbosity level: %d\n", opt_v);
 	printf("Mask: 0x%08X\n", opt_mask);
 	printf("mcstr: >%s<\n", opt_mcstr);
+	return t_pthru();
+}
 
-	t_pthru();
-
+int main(int argc, char **argv)
+{
+	if (HX_init() <= 0)
+		return EXIT_FAILURE;
+	int ret = runner(argc, argv);
+	if (ret != EXIT_SUCCESS)
+		printf("FAILED\n");
 	HX_exit();
-	return EXIT_SUCCESS;
+	return ret;
 }
diff --git a/src/tc-realpath.c b/src/tc-realpath.c
index 23609ca..b71c127 100644
--- a/src/tc-realpath.c
+++ b/src/tc-realpath.c
@@ -8,6 +8,7 @@
 #include <libHX/io.h>
 #include <libHX/option.h>
 #include <libHX/string.h>
+#include "internal.h"
 
 static unsigned int rp_flags;
 static unsigned int rp_absolute;
@@ -24,9 +25,9 @@ static const struct HXoption rp_option_table[] = {
 	HXOPT_TABLEEND,
 };
 
-static bool rp_get_options(int *argc, const char ***argv)
+static bool rp_get_options(char **oargv, int *argc, char ***argv)
 {
-	if (HX_getopt(rp_option_table, argc, argv, HXOPT_USAGEONERR) !=
+	if (HX_getopt5(rp_option_table, oargv, argc, argv, HXOPT_USAGEONERR) !=
 	    HXOPT_ERR_SUCCESS)
 		return false;
 	rp_flags = HX_REALPATH_DEFAULT;
@@ -47,18 +48,19 @@ static void t_1(void)
 	HXmc_free(tmp);
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **oargv)
 {
+	char **argv = nullptr;
 	hxmc_t *res;
 	int ret;
 
-	if (!rp_get_options(&argc, &argv))
+	if (!rp_get_options(oargv, &argc, &argv))
 		return EXIT_FAILURE;
 	t_1();
 
 	res = NULL;
-	while (--argc > 0) {
-		ret = HX_realpath(&res, *++argv, rp_flags);
+	for (int i = 1; i < argc; ++i) {
+		ret = HX_realpath(&res, argv[argc], rp_flags);
 		if (ret < 0) {
 			perror("HX_realpath");
 			printf("\n");
@@ -66,5 +68,6 @@ int main(int argc, const char **argv)
 			printf("%s\n", res);
 		}
 	}
+	HX_zvecfree(argv);
 	return EXIT_SUCCESS;
 }
diff --git a/src/tc-shconfig.c b/src/tc-shconfig.c
index 3717c15..0dde4c5 100644
--- a/src/tc-shconfig.c
+++ b/src/tc-shconfig.c
@@ -44,7 +44,7 @@ static int t_shconfig2(const char *file)
 	return EXIT_SUCCESS;
 }
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	int ret;
 
@@ -61,7 +61,7 @@ static int runner(int argc, const char **argv)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
 	if (ret != EXIT_SUCCESS)
diff --git a/src/tc-string.c b/src/tc-string.c
index 1c7ed09..e7f90c2 100644
--- a/src/tc-string.c
+++ b/src/tc-string.c
@@ -197,93 +197,6 @@ static void t_split2(void)
 	HX_zvecfree(a);
 }
 
-/* avoid these being inlined */
-extern char *f_strlcpy_str(char *, const char *, size_t);
-extern char *f_strlcpy_mem(char *, const char *, size_t);
-
-EXPORT_SYMBOL char *f_strlcpy_str(char *d, const char *s, size_t n)
-{
-	if (n == 0)
-		return d;
-	strncpy(d, s, n);
-	d[n-1] = '\0';
-	return d;
-}
-
-EXPORT_SYMBOL char *f_strlcpy_mem(char *dest, const char *src, size_t dsize)
-{
-	size_t slen = strlen(src);
-	if (slen < dsize)
-		return static_cast(char *, memcpy(dest, src, slen + 1));
-	if (dsize > 0) {
-		memcpy(dest, src, dsize - 1);
-		dest[dsize-1] = '\0';
-	}
-	return dest;
-}
-
-static const char s_lorem_ipsum[] = /* 1368 chars */
-"Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo "
-"ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis "
-"parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, "
-"pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec "
-"pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, "
-"rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede "
-"mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper "
-"nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, "
-"consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra "
-"quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. "
-"Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur "
-"ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, "
-"tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing "
-"sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit "
-"id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut "
-"libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros "
-"faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec "
-"sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit "
-"cursus nunc,";
-
-static void t_strlcpy(void)
-{
-	static const size_t picksizes[] =
-		{4, 8, 16, 32, 64, 80, 128, 256, 1024, 2048};
-	char ibuf[2048], obuf[2048];
-	size_t ipick, opick, k, runs = 10000000 + HX_irand(0, 1);
-	struct timespec start, stop, d1, d2, d3;
-
-	for (ipick = 0; ipick < ARRAY_SIZE(picksizes); ++ipick) {
-		/* Select string size */
-		HX_strlcpy(ibuf, s_lorem_ipsum, picksizes[ipick]);
-
-		for (opick = 0; opick < ARRAY_SIZE(picksizes); ++opick) {
-			/* Select buffer size */
-			clock_gettime(CLOCK_MONOTONIC, &start);
-			for (k = 0; k < runs; ++k)
-				f_strlcpy_str(reinterpret_cast(char *, obuf),
-					ibuf, picksizes[opick]);
-			clock_gettime(CLOCK_MONOTONIC, &stop);
-			HX_timespec_sub(&d1, &stop, &start);
-
-			clock_gettime(CLOCK_MONOTONIC, &start);
-			for (k = 0; k < runs; ++k)
-				f_strlcpy_mem(reinterpret_cast(char *, obuf),
-					ibuf, picksizes[opick]);
-			clock_gettime(CLOCK_MONOTONIC, &stop);
-			HX_timespec_sub(&d2, &stop, &start);
-
-			HX_timespec_sub(&d3, &d1, &d2);
-			printf("%4zu->%4zu: " HX_TIMESPEC_FMT
-			       " (str=" HX_TIMESPEC_FMT
-			       " mem=" HX_TIMESPEC_FMT ")\n",
-				strlen(ibuf), picksizes[opick],
-				HX_TIMESPEC_EXP(&d3),
-				HX_TIMESPEC_EXP(&d1),
-				HX_TIMESPEC_EXP(&d2)
-				);
-		}
-	}
-}
-
 static void t_strlcpy2(void)
 {
 	char a[3] = {49, 49, 49};
@@ -381,8 +294,8 @@ static int t_units_strto(void)
 		unsigned long long expect_out;
 		const char expect_rem[8];
 	} vt[] = {
-		{"-5k", 1000, ULLONG_MAX, "-5k"},
-		{" -5.2k", 1000, ULLONG_MAX, "-5.2k"},
+		{"-5k", 1000, -5000ULL, ""},
+		{" -5.2k", 1000, -5200ULL, ""},
 		{"1", 9999, 1, ""},
 		{"1024", 9999, 1ULL << 10, ""},
 		{"1048576", 9999, 1ULL << 20, ""},
@@ -403,6 +316,10 @@ static int t_units_strto(void)
 		{"1T", 1024, 1ULL << 40, ""},
 		{"1P", 1024, 1ULL << 50, ""},
 		{"1E", 1024, 1ULL << 60, ""},
+		{"15E", 1024, 15ULL << 60, ""},
+		{"16E", 1024, ULLONG_MAX, ""},
+		{"16.0E", 1024, ULLONG_MAX, ""},
+		{"1Z", 1024, ULLONG_MAX, ""},
 		{"0", 0, 0, ""},
 		{"0k", 0, 0, ""},
 		{"0  Z", 0, 0, ""},
@@ -412,18 +329,28 @@ static int t_units_strto(void)
 		{"0.00000000000000001E", 1024, 11, ""},
 		{"1.525444GiB", 1000, 1525444000, "iB"},
 		{"1.525444GiB", 1024, 1637933022, "iB"},
+		{"2M4k", 1000, 2000000, "4k"},
+		{"18446744073709551614", 0, 18446744073709551614ULL, ""},
+		{"18446744073709551615", 0, ULLONG_MAX, ""},
+		{"18446744073709551616", 0, ULLONG_MAX, ""},
+		{"-18446744073709551614", 0, 2, ""},
+		{"-18446744073709551615", 0, 1, ""},
+		{"-18446744073709551616", 0, ULLONG_MAX, ""},
 	};
 	char *end;
 	for (size_t i = 0; i < ARRAY_SIZE(vt); ++i) {
 		unsigned long long q = HX_strtoull_unit(vt[i].input, &end, vt[i].exponent);
-		printf("%s -> %llu __ %s\n", vt[i].input, q, end);
-		if (q != vt[i].expect_out || strcmp(end, vt[i].expect_rem) != 0)
+		printf("Observed: %s -> %llu __ %s\n", vt[i].input, q, end);
+		if (q != vt[i].expect_out || strcmp(end, vt[i].expect_rem) != 0) {
+			printf("Expected: %s -> %llu __ %s\n", vt[i].input,
+				vt[i].expect_out, vt[i].expect_rem);
 			return EXIT_FAILURE;
+		}
 	}
 	return EXIT_SUCCESS;
 }
 
-static void t_time_units(void)
+static int t_time_units(void)
 {
 	static const struct {
 		unsigned long long input;
@@ -432,10 +359,13 @@ static void t_time_units(void)
 	} vt[] = {
 		{31536000, 0, "365d"},
 		{31622400, 0, "366d"},
-		{31622400, HXUNIT_YEARS, "1y18h"},
-		{31622400, HXUNIT_MONTHS, "1y"},
-		{31622400, HXUNIT_WEEKS, "1y"},
-		{31622400, HXUNIT_MONTHS | HXUNIT_WEEKS, "1y"},
+		{34819200, HXUNIT_WEEKS, "57weeks4d"},
+		{34819200, HXUNIT_MONTHS, "13months7d7h30min"},
+		{34819200, HXUNIT_MONTHS | HXUNIT_WEEKS, "13months1week7h30min"},
+		{34819200, HXUNIT_YEARS, "1y37d18h"},
+		{34819200, HXUNIT_YEARS | HXUNIT_WEEKS, "1y5weeks2d18h"},
+		{34819200, HXUNIT_YEARS | HXUNIT_MONTHS, "1y1month7d7h30min"},
+		{34819200, HXUNIT_YEARS | HXUNIT_MONTHS | HXUNIT_WEEKS, "1y1month1week7h30min"},
 		{2678400, HXUNIT_MONTHS, "1month13h30min"},
 		{2592000, HXUNIT_MONTHS, "30d"},
 		{608400, HXUNIT_WEEKS, "1week1h"},
@@ -449,41 +379,55 @@ static void t_time_units(void)
 	for (size_t i = 0; i < ARRAY_SIZE(vt); ++i) {
 		char out[60];
 		char *ret = HX_unit_seconds(out, ARRAY_SIZE(out), vt[i].input, vt[i].flags);
-		printf("%llus => \"%s\"\n", vt[i].input, ret);
-		if (strcmp(ret, vt[i].expect_out) != 0)
-			printf("\tBUG, expected \"%s\"\n", vt[i].expect_out);
+		printf("Observed: %llus => \"%s\"\n", vt[i].input, ret);
+		if (strcmp(ret, vt[i].expect_out) != 0) {
+			printf("Expected: \"%s\"\n", vt[i].expect_out);
+			return EXIT_FAILURE;
+		}
 	}
+	return EXIT_SUCCESS;
 }
 
-static void t_time_strto(void)
+static int t_time_strto(void)
 {
 	#define NS_PER_S 1000000000ULL
 	static const struct {
 		const char *input;
 		unsigned long long expect_s, expect_ns;
-		const char expect_rem[8];
+		const char expect_rem[16];
 	} vt[] = {
 		{"29µs", 0, 29000, ""},
 		{"1y", 31557600, NS_PER_S * 31557600, ""},
 		{"1y1month1week1d1h1min1s ", 31557600+2629800+86400*8+3600+60+1, NS_PER_S * (31557600+2629800+86400*8+3600+60+1), ""},
 		{" -1d", 0, 0, "-1d"},
-		{"1 -", 1, NS_PER_S, "-"},
+		{"1 -", 0, 0, "1 -"},
 		{"12.5 hours .5 hours 240 minutes 25200 seconds", 86400, NS_PER_S * 86400, ""},
 		{"1s", 1, NS_PER_S, ""},
 		{"1min", 60, 60 * NS_PER_S, ""},
 		{"0", 0, 0, ""},
+		{"0.0", 0, 0, ""},
+		{"1s0", 1, NS_PER_S, ""},
+		{"1s0.0", 1, NS_PER_S, ""},
+		{"1s1s", 2, 2 * NS_PER_S, ""},
+		{"1s1", 1, 1 * NS_PER_S, "1"},
+		{"584542046091y", ULLONG_MAX, ULLONG_MAX, "584542046091y"},
 	};
 	char *end;
 	printf("===== t_time_strto\n");
 	for (size_t i = 0; i < ARRAY_SIZE(vt); ++i) {
 		unsigned long long q = HX_strtoull_sec(vt[i].input, &end);
 		unsigned long long qn = HX_strtoull_nsec(vt[i].input, &end);
-		printf("\"%s\" => %llus [%lluns] + \"%s\"\n", vt[i].input, q, qn, end);
-		if (q != vt[i].expect_s || qn != vt[i].expect_ns)
-			printf("\tBUG: expected %llus [%lluns]\n", vt[i].expect_s, vt[i].expect_ns);
-		if (strcmp(end, vt[i].expect_rem) != 0)
-			printf("\tBUG: expected remainder \"%s\"\n", vt[i].expect_rem);
+		printf("Observed: \"%s\" => %llus [%lluns] + \"%s\"\n", vt[i].input, q, qn, end);
+		if (q != vt[i].expect_s || qn != vt[i].expect_ns) {
+			printf("Expected: %llus [%lluns]\n", vt[i].expect_s, vt[i].expect_ns);
+			return EXIT_FAILURE;
+		}
+		if (strcmp(end, vt[i].expect_rem) != 0) {
+			printf("Expected: remainder \"%s\"\n", vt[i].expect_rem);
+			return EXIT_FAILURE;
+		}
 	}
+	return EXIT_SUCCESS;
 }
 
 static int t_strmid(void)
@@ -515,7 +459,7 @@ static int t_strmid(void)
 #undef T
 }
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	hxmc_t *tx = NULL;
 	const char *file = (argc >= 2) ? argv[1] : "tx-string.cpp";
@@ -559,19 +503,22 @@ static int runner(int argc, const char **argv)
 	ret = t_units_strto();
 	if (ret != EXIT_SUCCESS)
 		return EXIT_FAILURE;
-	t_time_units();
-	t_time_strto();
-	t_strlcpy();
+	ret = t_time_units();
+	if (ret != EXIT_SUCCESS)
+		return EXIT_FAILURE;
+	ret = t_time_strto();
+	if (ret != EXIT_SUCCESS)
+		return EXIT_FAILURE;
 	t_strlcpy2();
 	HXmc_free(tx);
 	HX_exit();
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-switchuser.c b/src/tc-switchuser.c
index 4cc5604..e5d2c25 100644
--- a/src/tc-switchuser.c
+++ b/src/tc-switchuser.c
@@ -19,9 +19,10 @@ static const struct HXoption options_table[] = {
 	HXOPT_TABLEEND,
 };
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
-	HX_getopt(options_table, &argc, &argv, HXOPT_USAGEONERR);
+	if (HX_getopt(options_table, &argc, &argv, HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
 	const char *user = user_name != NULL ? user_name : "-";
 	const char *group = group_name != NULL ? group_name : "-";
 	switch (HXproc_switch_user(user_name, group_name)) {
@@ -62,10 +63,11 @@ static int runner(int argc, const char **argv)
 		break;
 	}
 	}
+	HX_zvecfree(argv);
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
 	if (ret != EXIT_SUCCESS)
diff --git a/src/tx-option.cpp b/src/tx-option.cpp
index b70110f..248ab7c 100644
--- a/src/tx-option.cpp
+++ b/src/tx-option.cpp
@@ -12,8 +12,10 @@ static const struct HXoption t[] = {
 	HXOPT_TABLEEND,
 };
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
-	HX_getopt(t, &argc, &argv, HXOPT_USAGEONERR);
+	if (HX_getopt(t, &argc, &argv, HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
+	HX_zvecfree(argv);
 	return EXIT_SUCCESS;
 }
diff --git a/src/uxcompat.h b/src/uxcompat.h
new file mode 100644
index 0000000..e735c50
--- /dev/null
+++ b/src/uxcompat.h
@@ -0,0 +1,104 @@
+#ifndef _LIBHX_UXCOMPAT_H
+#define _LIBHX_UXCOMPAT_H 1
+
+#if defined(__cplusplus) && __cplusplus >= 201100UL
+#	include <cstddef>
+#	include <cstdint>
+#else
+#	include <stddef.h>
+#	include <stdint.h>
+#endif
+#include <sys/stat.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef ENOSYS
+#	define ENOSYS 38 /* Function not implemented */
+#endif
+
+#ifndef S_IFLNK
+#	define S_IFLNK  0xA000
+#endif
+#ifndef S_IFSOCK
+#	define S_IFSOCK 0xC000
+#endif
+#ifndef S_IFBLK
+#	define S_IFBLK 0x6000
+#endif
+#ifndef S_IFCHR
+#	define S_IFCHR 0x2000
+#endif
+#ifndef S_IFIFO
+#	define S_IFIFO 0x1000
+#endif
+#ifndef S_ISBLK
+#	define S_ISBLK(__mode) (((__mode) & S_IFMT) == S_IFBLK)
+#endif
+#ifndef S_ISCHR
+#	define S_ISCHR(__mode) (((__mode) & S_IFMT) == S_IFCHR)
+#endif
+#ifndef S_ISDIR
+#	define S_ISDIR(__mode) (((__mode) & S_IFMT) == S_IFDIR)
+#endif
+#ifndef S_ISREG
+#	define S_ISREG(__mode) (((__mode) & S_IFMT) == S_IFREG)
+#endif
+#ifndef S_ISLNK
+#	define S_ISLNK(__mode) (((__mode) & S_IFMT) == S_IFLNK)
+#endif
+#ifndef S_ISFIFO
+#	define S_ISFIFO(__mode) (((__mode) & S_IFMT) == S_IFIFO)
+#endif
+#ifndef S_ISSOCK
+#	define S_ISSOCK(__mode) (((__mode) & S_IFMT) == S_IFSOCK)
+#endif
+#ifndef S_IRGRP
+#	define S_IRGRP 00040
+#endif
+#ifndef S_IWGRP
+#	define S_IWGRP 00020
+#endif
+#ifndef S_IROTH
+#	define S_IROTH 00004
+#endif
+#ifndef S_IWOTH
+#	define S_IWOTH 00002
+#endif
+
+struct stat;
+
+/*
+ *	UX-FILE.C
+ */
+extern int chown(const char *, long, long);
+extern int fchmod(int, long);
+extern int fchown(int, long, long);
+extern int lchown(const char *, long, long);
+extern int lstat(const char *, struct stat *);
+extern int mkfifo(const char *, long);
+extern int mknod(const char *, long, long);
+extern int readlink(const char *, char *, size_t);
+extern int symlink(const char *, const char *);
+
+/*
+ *	UX-MMAP.C
+ */
+#ifdef _WIN32
+#	define MAP_FAILED  reinterpret_cast(void *, static_cast(intptr_t, -1))
+#	define PROT_NONE   0x0
+#	define PROT_READ   0x1
+#	define PROT_WRITE  0x2
+#	define PROT_EXEC   0x4
+#	define MAP_SHARED  0x1
+#	define MAP_PRIVATE 0x2
+extern void *mmap(void *, size_t, int, int, int, off_t);
+extern int munmap(void *, size_t);
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* _LIBHX_UXCOMPAT_H */
-- 
cgit v1.2.3