Merging upstream version 5.6.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

27 files changed, 481 insertions, 627 deletions

diff --git a/m4/ax_check_capsicum.m4 b/m4/ax_check_capsicum.m4
deleted file mode 100644
index f79dc5c..0000000
--- a/m4/ax_check_capsicum.m4
+++ /dev/null
@@ -1,85 +0,0 @@
-# -*- Autoconf -*-
-
-# SYNOPSIS
-#
-#   AX_CHECK_CAPSICUM([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-#
-# DESCRIPTION
-#
-#   This macro searches for an installed Capsicum header and library,
-#   and if found:
-#     - AC_DEFINE([HAVE_CAPSICUM]) is called.
-#     - AC_DEFINE([HAVE_SYS_CAPSICUM_H]) is called if <sys/capsicum.h>
-#       is present (otherwise <sys/capability.h> must be used).
-#     - CAPSICUM_LIB is set to the -l option needed to link Capsicum support,
-#       and AC_SUBST([CAPSICUM_LIB]) is called.
-#     - The shell commands in ACTION-IF-FOUND are run. The default
-#       ACTION-IF-FOUND prepends ${CAPSICUM_LIB} into LIBS. If you don't
-#       want to modify LIBS and don't need to run any other commands either,
-#       use a colon as ACTION-IF-FOUND.
-#
-#   If Capsicum support isn't found:
-#     - The shell commands in ACTION-IF-NOT-FOUND are run. The default
-#       ACTION-IF-NOT-FOUND calls AC_MSG_WARN to print a warning that
-#       Capsicum support wasn't found.
-#
-#   You should use autoheader to include a definition for the symbols above
-#   in a config.h file.
-#
-#   Sample usage in a C/C++ source is as follows:
-#
-#     #ifdef HAVE_CAPSICUM
-#     # ifdef HAVE_SYS_CAPSICUM_H
-#     #  include <sys/capsicum.h>
-#     # else
-#     #  include <sys/capability.h>
-#     # endif
-#     #endif /* HAVE_CAPSICUM */
-#
-# LICENSE
-#
-#   Copyright (c) 2014 Google Inc.
-#   Copyright (c) 2015 Lasse Collin <lasse.collin@tukaani.org>
-#
-#   Copying and distribution of this file, with or without modification,
-#   are permitted in any medium without royalty provided the copyright
-#   notice and this notice are preserved.  This file is offered as-is,
-#   without any warranty.
-
-#serial 2
-
-AC_DEFUN([AX_CHECK_CAPSICUM], [
-# On FreeBSD >= 11.x and Linux, Capsicum is uses <sys/capsicum.h>.
-# If this header is found, it is assumed to be the right one.
-capsicum_header_found=no
-AC_CHECK_HEADERS([sys/capsicum.h], [capsicum_header_found=yes])
-if test "$capsicum_header_found" = no ; then
-    # On FreeBSD 10.x Capsicum uses <sys/capability.h>. Such a header exists
-    # on Linux too but it describes POSIX.1e capabilities. Look for the
-    # declaration of cap_rights_limit to check if <sys/capability.h> is
-    # a Capsicum header.
-    AC_CHECK_DECL([cap_rights_limit], [capsicum_header_found=yes], [],
-                  [#include <sys/capability.h>])
-fi
-
-capsicum_lib_found=no
-CAPSICUM_LIB=
-if test "$capsicum_header_found" = yes ; then
-    AC_LANG_PUSH([C])
-    # FreeBSD >= 10.x has Capsicum functions in libc.
-    AC_LINK_IFELSE([AC_LANG_CALL([], [cap_rights_limit])],
-                   [capsicum_lib_found=yes], [])
-    # Linux has Capsicum functions in libcaprights.
-    AC_CHECK_LIB([caprights], [cap_rights_limit],
-                 [CAPSICUM_LIB=-lcaprights
-                  capsicum_lib_found=yes], [])
-    AC_LANG_POP([C])
-fi
-AC_SUBST([CAPSICUM_LIB])
-
-if test "$capsicum_lib_found" = yes ; then
-    AC_DEFINE([HAVE_CAPSICUM], [1], [Define to 1 if Capsicum is available.])
-    m4_default([$1], [LIBS="${CAPSICUM_LIB} $LIBS"])
-else
-    m4_default([$2], [AC_MSG_WARN([Capsicum support not found])])
-fi])
diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4
index 9f35d13..3f26da6 100644
--- a/m4/ax_pthread.m4
+++ b/m4/ax_pthread.m4
@@ -1,3 +1,5 @@
+dnl SPDX-License-Identifier: GPL-3.0-or-later WITH Autoconf-exception-macro
+
 # ===========================================================================
 #        https://www.gnu.org/software/autoconf-archive/ax_pthread.html
 # ===========================================================================
diff --git a/m4/build-to-host.m4 b/m4/build-to-host.m4
new file mode 100644
index 0000000..f928e9a
--- /dev/null
+++ b/m4/build-to-host.m4
@@ -0,0 +1,79 @@
+# build-to-host.m4 serial 3
+dnl Copyright (C) 2023-2024 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Bruno Haible.
+
+dnl When the build environment ($build_os) is different from the target runtime
+dnl environment ($host_os), file names may need to be converted from the build
+dnl environment syntax to the target runtime environment syntax. This is
+dnl because the Makefiles are executed (mostly) by build environment tools and
+dnl therefore expect file names in build environment syntax, whereas the runtime
+dnl expects file names in target runtime environment syntax.
+dnl
+dnl For example, if $build_os = cygwin and $host_os = mingw32, filenames need
+dnl be converted from Cygwin syntax to native Windows syntax:
+dnl   /cygdrive/c/foo/bar -> C:\foo\bar
+dnl   /usr/local/share    -> C:\cygwin64\usr\local\share
+dnl
+dnl gl_BUILD_TO_HOST([somedir])
+dnl This macro takes as input an AC_SUBSTed variable 'somedir', which must
+dnl already have its final value assigned, and produces two additional
+dnl AC_SUBSTed variables 'somedir_c' and 'somedir_c_make', that designate the
+dnl same file name value, just in different syntax:
+dnl   - somedir_c       is the file name in target runtime environment syntax,
+dnl                     as a C string (starting and ending with a double-quote,
+dnl                     and with escaped backslashes and double-quotes in
+dnl                     between).
+dnl   - somedir_c_make  is the same thing, escaped for use in a Makefile.
+
+AC_DEFUN([gl_BUILD_TO_HOST],
+[
+  AC_REQUIRE([AC_CANONICAL_BUILD])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_BUILD_TO_HOST_INIT])
+
+  dnl Define somedir_c.
+  gl_final_[$1]="$[$1]"
+  dnl Translate it from build syntax to host syntax.
+  case "$build_os" in
+    cygwin*)
+      case "$host_os" in
+        mingw* | windows*)
+          gl_final_[$1]=`cygpath -w "$gl_final_[$1]"` ;;
+      esac
+      ;;
+  esac
+  dnl Convert it to C string syntax.
+  [$1]_c=`printf '%s\n' "$gl_final_[$1]" | sed -e "$gl_sed_double_backslashes" -e "$gl_sed_escape_doublequotes" | tr -d "$gl_tr_cr"`
+  [$1]_c='"'"$[$1]_c"'"'
+  AC_SUBST([$1_c])
+
+  dnl Define somedir_c_make.
+  [$1]_c_make=`printf '%s\n' "$[$1]_c" | sed -e "$gl_sed_escape_for_make_1" -e "$gl_sed_escape_for_make_2" | tr -d "$gl_tr_cr"`
+  dnl Use the substituted somedir variable, when possible, so that the user
+  dnl may adjust somedir a posteriori when there are no special characters.
+  if test "$[$1]_c_make" = '\"'"${gl_final_[$1]}"'\"'; then
+    [$1]_c_make='\"$([$1])\"'
+  fi
+  AC_SUBST([$1_c_make])
+])
+
+dnl Some initializations for gl_BUILD_TO_HOST.
+AC_DEFUN([gl_BUILD_TO_HOST_INIT],
+[
+  gl_sed_double_backslashes='s/\\/\\\\/g'
+  gl_sed_escape_doublequotes='s/"/\\"/g'
+changequote(,)dnl
+  gl_sed_escape_for_make_1="s,\\([ \"&'();<>\\\\\`|]\\),\\\\\\1,g"
+changequote([,])dnl
+  gl_sed_escape_for_make_2='s,\$,\\$$,g'
+  dnl Find out how to remove carriage returns from output. Solaris /usr/ucb/tr
+  dnl does not understand '\r'.
+  case `echo r | tr -d '\r'` in
+    '') gl_tr_cr='\015' ;;
+    *)  gl_tr_cr='\r' ;;
+  esac
+])
diff --git a/m4/getopt.m4 b/m4/getopt.m4
index cfbe40f..af8bfd4 100644
--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,71 +1,72 @@
-# getopt.m4 serial 14 (modified version)
-dnl Copyright (C) 2002-2006, 2008 Free Software Foundation, Inc.
+dnl SPDX-License-Identifier: FSFULLR
+
+# getopt.m4 serial 49 (modified version)
+dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
-# The getopt module assume you want GNU getopt, with getopt_long etc,
-# rather than vanilla POSIX getopt.  This means your code should
-# always include <getopt.h> for the getopt prototypes.
+# This version has been modified to reduce complexity since we only need
+# GNU getopt_long and do not care about replacing getopt.
 
-AC_DEFUN([gl_GETOPT_SUBSTITUTE],
+# Check for a POSIX compliant getopt function with GNU extensions (such as
+# options with optional arguments) and the functions getopt_long,
+# getopt_long_only.
+AC_DEFUN([gl_FUNC_GETOPT_GNU],
 [
-  AC_LIBOBJ([getopt])
-  AC_LIBOBJ([getopt1])
-  gl_GETOPT_SUBSTITUTE_HEADER
-])
+  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
 
-AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
-[
-  GETOPT_H=getopt.h
-  AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
-    [Define to rpl_ if the getopt replacement functions and variables
-     should be used.])
-  AC_SUBST([GETOPT_H])
+  if test -n "$gl_replace_getopt"; then
+    gl_GETOPT_SUBSTITUTE
+  fi
 ])
 
 AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
 [
-  if test -z "$GETOPT_H"; then
-    AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+  gl_replace_getopt=
+
+  if test -z "$gl_replace_getopt"; then
+    AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
   fi
 
-  if test -z "$GETOPT_H"; then
-    AC_CHECK_FUNCS([getopt_long], [], [GETOPT_H=getopt.h])
+  if test -z "$gl_replace_getopt"; then
+    AC_CHECK_FUNCS([getopt_long], [], [gl_replace_getopt=yes])
   fi
 
   dnl BSD getopt_long uses a way to reset option processing, that is different
   dnl from GNU and Solaris (which copied the GNU behavior). We support both
   dnl GNU and BSD style resetting of getopt_long(), so there's no need to use
   dnl GNU getopt_long() on BSD due to different resetting style.
-  dnl
-  dnl With getopt_long(), some BSD versions have a bug in handling optional
-  dnl arguments. This bug appears only if the environment variable
-  dnl POSIXLY_CORRECT has been set, so it shouldn't be too bad in most
-  dnl cases; probably most don't have that variable set. But if we actually
-  dnl hit this bug, it is a real problem due to our heavy use of optional
-  dnl arguments.
-  dnl
-  dnl According to CVS logs, the bug was introduced in OpenBSD in 2003-09-22
-  dnl and copied to FreeBSD in 2004-02-24. It was fixed in both in 2006-09-22,
-  dnl so the affected versions shouldn't be popular anymore anyway. NetBSD
-  dnl never had this bug. TODO: What about Darwin and others?
-  if test -z "$GETOPT_H"; then
+  if test -z "$gl_replace_getopt"; then
     AC_CHECK_DECL([optreset],
       [AC_DEFINE([HAVE_OPTRESET], 1,
         [Define to 1 if getopt.h declares extern int optreset.])],
       [], [#include <getopt.h>])
   fi
 
-  dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
-  dnl option string (as of 2005-05-05). We don't use that feature, so this
+  dnl POSIX 2008 does not specify leading '+' behavior, but see
+  dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on
+  dnl the next version of POSIX.  We don't use that feature, so this
   dnl is not a problem for us. Thus, the respective test was removed here.
+
+  dnl Checks for getopt handling '-' as a leading character in an option
+  dnl string were removed, since we also don't use that feature.
+
 ])
 
-AC_DEFUN([gl_GETOPT_IFELSE],
+AC_DEFUN([gl_GETOPT_SUBSTITUTE],
 [
-  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
-  AS_IF([test -n "$GETOPT_H"], [$1], [$2])
+  AC_LIBOBJ([getopt])
+  AC_LIBOBJ([getopt1])
+
+  AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
+
+  AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
+    [Define to rpl_ if the getopt replacement functions and variables
+     should be used.])
+
+  GETOPT_H=getopt.h
+  AC_SUBST([GETOPT_H])
 ])
 
-AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
+AC_DEFUN([gl_GETOPT], [gl_FUNC_GETOPT_GNU])
diff --git a/m4/gettext.m4 b/m4/gettext.m4
index f449240..16f9db1 100644
--- a/m4/gettext.m4
+++ b/m4/gettext.m4
@@ -1,5 +1,5 @@
-# gettext.m4 serial 72 (gettext-0.21.1)
-dnl Copyright (C) 1995-2014, 2016, 2018-2020 Free Software Foundation, Inc.
+# gettext.m4 serial 78 (gettext-0.22.4)
+dnl Copyright (C) 1995-2014, 2016, 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -20,11 +20,13 @@ dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010.
 dnl Macro to add for using GNU gettext.
 
 dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
-dnl INTLSYMBOL must be one of 'external', 'use-libtool'.
-dnl    INTLSYMBOL should be 'external' for packages other than GNU gettext, and
-dnl    'use-libtool' for the packages 'gettext-runtime' and 'gettext-tools'.
-dnl    If INTLSYMBOL is 'use-libtool', then a libtool library
-dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
+dnl INTLSYMBOL must be one of 'external', 'use-libtool', 'here'.
+dnl    INTLSYMBOL should be 'external' for packages other than GNU gettext.
+dnl    It should be 'use-libtool' for the packages 'gettext-runtime' and
+dnl    'gettext-tools'.
+dnl    It should be 'here' for the package 'gettext-runtime/intl'.
+dnl    If INTLSYMBOL is 'here', then a libtool library
+dnl    $(top_builddir)/libintl.la will be created (shared and/or static,
 dnl    depending on --{enable,disable}-{shared,static} and on the presence of
 dnl    AM-DISABLE-SHARED).
 dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
@@ -55,24 +57,21 @@ dnl
 AC_DEFUN([AM_GNU_GETTEXT],
 [
   dnl Argument checking.
-  m4_if([$1], [], , [m4_if([$1], [external], , [m4_if([$1], [use-libtool], ,
+  m4_if([$1], [], , [m4_if([$1], [external], , [m4_if([$1], [use-libtool], , [m4_if([$1], [here], ,
     [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
-])])])])
+])])])])])
   m4_if(m4_if([$1], [], [old])[]m4_if([$1], [no-libtool], [old]), [old],
     [errprint([ERROR: Use of AM_GNU_GETTEXT without [external] argument is no longer supported.
 ])])
   m4_if([$2], [], , [m4_if([$2], [need-ngettext], , [m4_if([$2], [need-formatstring-macros], ,
     [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
 ])])])])
-  define([gt_included_intl],
-    m4_if([$1], [external], [no], [yes]))
+  define([gt_building_libintl_in_same_build_tree],
+    m4_if([$1], [use-libtool], [yes], [m4_if([$1], [here], [yes], [no])]))
   gt_NEEDS_INIT
   AM_GNU_GETTEXT_NEED([$2])
 
   AC_REQUIRE([AM_PO_SUBDIRS])dnl
-  m4_if(gt_included_intl, yes, [
-    AC_REQUIRE([AM_INTL_SUBDIR])dnl
-  ])
 
   dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
   AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
@@ -82,13 +81,13 @@ AC_DEFUN([AM_GNU_GETTEXT],
   dnl Ideally we would do this search only after the
   dnl      if test "$USE_NLS" = "yes"; then
   dnl        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
-  dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
+  dnl tests. But if configure.ac invokes AM_ICONV after AM_GNU_GETTEXT
   dnl the configure script would need to contain the same shell code
   dnl again, outside any 'if'. There are two solutions:
   dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
   dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
   dnl Since AC_PROVIDE_IFELSE is not documented, we avoid it.
-  m4_if(gt_included_intl, yes, , [
+  m4_if(gt_building_libintl_in_same_build_tree, yes, , [
     AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
   ])
 
@@ -98,8 +97,7 @@ AC_DEFUN([AM_GNU_GETTEXT],
   dnl Set USE_NLS.
   AC_REQUIRE([AM_NLS])
 
-  m4_if(gt_included_intl, yes, [
-    BUILD_INCLUDED_LIBINTL=no
+  m4_if(gt_building_libintl_in_same_build_tree, yes, [
     USE_INCLUDED_LIBINTL=no
   ])
   LIBINTL=
@@ -118,7 +116,7 @@ AC_DEFUN([AM_GNU_GETTEXT],
   dnl If we use NLS figure out what method
   if test "$USE_NLS" = "yes"; then
     gt_use_preinstalled_gnugettext=no
-    m4_if(gt_included_intl, yes, [
+    m4_if(gt_building_libintl_in_same_build_tree, yes, [
       AC_MSG_CHECKING([whether included gettext is requested])
       AC_ARG_WITH([included-gettext],
         [  --with-included-gettext use the GNU gettext library included here],
@@ -174,7 +172,7 @@ return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
 
         if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
           dnl Sometimes libintl requires libiconv, so first search for libiconv.
-          m4_if(gt_included_intl, yes, , [
+          m4_if(gt_building_libintl_in_same_build_tree, yes, , [
             AM_ICONV_LINK
           ])
           dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
@@ -212,9 +210,16 @@ return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
                  ]])],
               [eval "$gt_func_gnugettext_libintl=yes"],
               [eval "$gt_func_gnugettext_libintl=no"])
-            dnl Now see whether libintl exists and depends on libiconv.
-            if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
-              LIBS="$LIBS $LIBICONV"
+            dnl Now see whether libintl exists and depends on libiconv or other
+            dnl OS dependent libraries, specifically on macOS and AIX.
+            gt_LIBINTL_EXTRA="$INTL_MACOSX_LIBS"
+            AC_REQUIRE([AC_CANONICAL_HOST])
+            case "$host_os" in
+              aix*) gt_LIBINTL_EXTRA="-lpthread" ;;
+            esac
+            if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } \
+               && { test -n "$LIBICONV" || test -n "$gt_LIBINTL_EXTRA"; }; then
+              LIBS="$LIBS $LIBICONV $gt_LIBINTL_EXTRA"
               AC_LINK_IFELSE(
                 [AC_LANG_PROGRAM(
                    [[
@@ -236,8 +241,8 @@ $gt_revision_test_code
 bindtextdomain ("", "");
 return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
                    ]])],
-                [LIBINTL="$LIBINTL $LIBICONV"
-                 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+                [LIBINTL="$LIBINTL $LIBICONV $gt_LIBINTL_EXTRA"
+                 LTLIBINTL="$LTLIBINTL $LTLIBICONV $gt_LIBINTL_EXTRA"
                  eval "$gt_func_gnugettext_libintl=yes"
                 ])
             fi
@@ -252,7 +257,8 @@ return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
         if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
            || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
                 && test "$PACKAGE" != gettext-runtime \
-                && test "$PACKAGE" != gettext-tools; }; then
+                && test "$PACKAGE" != gettext-tools \
+                && test "$PACKAGE" != libintl; }; then
           gt_use_preinstalled_gnugettext=yes
         else
           dnl Reset the values set by searching for libintl.
@@ -261,7 +267,7 @@ return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
           INCINTL=
         fi
 
-    m4_if(gt_included_intl, yes, [
+    m4_if(gt_building_libintl_in_same_build_tree, yes, [
         if test "$gt_use_preinstalled_gnugettext" != "yes"; then
           dnl GNU gettext is not found in the C library.
           dnl Fall back on included GNU gettext library.
@@ -271,7 +277,6 @@ return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
 
       if test "$nls_cv_use_gnu_gettext" = "yes"; then
         dnl Mark actions used to generate GNU NLS library.
-        BUILD_INCLUDED_LIBINTL=yes
         USE_INCLUDED_LIBINTL=yes
         LIBINTL="m4_if([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LIBICONV $LIBTHREAD"
         LTLIBINTL="m4_if([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LTLIBICONV $LTLIBTHREAD"
@@ -341,25 +346,39 @@ return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
     POSUB=po
   fi
 
-  m4_if(gt_included_intl, yes, [
-    dnl In GNU gettext we have to set BUILD_INCLUDED_LIBINTL to 'yes'
-    dnl because some of the testsuite requires it.
-    BUILD_INCLUDED_LIBINTL=yes
-
+  m4_if(gt_building_libintl_in_same_build_tree, yes, [
     dnl Make all variables we use known to autoconf.
-    AC_SUBST([BUILD_INCLUDED_LIBINTL])
     AC_SUBST([USE_INCLUDED_LIBINTL])
     AC_SUBST([CATOBJEXT])
   ])
 
-  dnl For backward compatibility. Some Makefiles may be using this.
-  INTLLIBS="$LIBINTL"
-  AC_SUBST([INTLLIBS])
+  m4_if(gt_building_libintl_in_same_build_tree, yes, [], [
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INTLLIBS="$LIBINTL"
+    AC_SUBST([INTLLIBS])
+  ])
 
   dnl Make all documented variables known to autoconf.
   AC_SUBST([LIBINTL])
   AC_SUBST([LTLIBINTL])
   AC_SUBST([POSUB])
+
+  dnl Define localedir_c and localedir_c_make.
+  dnl Find the final value of localedir.
+  gt_save_prefix="${prefix}"
+  gt_save_datarootdir="${datarootdir}"
+  gt_save_localedir="${localedir}"
+  dnl Unfortunately, prefix gets only finally determined at the end of
+  dnl configure.
+  if test "X$prefix" = "XNONE"; then
+    prefix="$ac_default_prefix"
+  fi
+  eval datarootdir="$datarootdir"
+  eval localedir="$localedir"
+  gl_BUILD_TO_HOST([localedir])
+  localedir="${gt_save_localedir}"
+  datarootdir="${gt_save_datarootdir}"
+  prefix="${gt_save_prefix}"
 ])
 
 
diff --git a/m4/host-cpu-c-abi.m4 b/m4/host-cpu-c-abi.m4
index b922324..e860a19 100644
--- a/m4/host-cpu-c-abi.m4
+++ b/m4/host-cpu-c-abi.m4
@@ -1,5 +1,5 @@
-# host-cpu-c-abi.m4 serial 15
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# host-cpu-c-abi.m4 serial 17
+dnl Copyright (C) 2002-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -461,217 +461,66 @@ EOF
 
 dnl Sets the HOST_CPU_C_ABI_32BIT variable to 'yes' if the C language ABI
 dnl (application binary interface) is a 32-bit one, to 'no' if it is a 64-bit
-dnl one, or to 'unknown' if unknown.
+dnl one.
 dnl This is a simplified variant of gl_HOST_CPU_C_ABI.
 AC_DEFUN([gl_HOST_CPU_C_ABI_32BIT],
 [
   AC_REQUIRE([AC_CANONICAL_HOST])
   AC_CACHE_CHECK([32-bit host C ABI], [gl_cv_host_cpu_c_abi_32bit],
-    [if test -n "$gl_cv_host_cpu_c_abi"; then
-       case "$gl_cv_host_cpu_c_abi" in
-         i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
-           gl_cv_host_cpu_c_abi_32bit=yes ;;
-         x86_64 | alpha | arm64 | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
-           gl_cv_host_cpu_c_abi_32bit=no ;;
-         *)
-           gl_cv_host_cpu_c_abi_32bit=unknown ;;
-       esac
-     else
-       case "$host_cpu" in
-
-         # CPUs that only support a 32-bit ABI.
-         arc \
-         | bfin \
-         | cris* \
-         | csky \
-         | epiphany \
-         | ft32 \
-         | h8300 \
-         | m68k \
-         | microblaze | microblazeel \
-         | nds32 | nds32le | nds32be \
-         | nios2 | nios2eb | nios2el \
-         | or1k* \
-         | or32 \
-         | sh | sh[1234] | sh[1234]e[lb] \
-         | tic6x \
-         | xtensa* )
-           gl_cv_host_cpu_c_abi_32bit=yes
-           ;;
+    [case "$host_cpu" in
 
-         # CPUs that only support a 64-bit ABI.
-changequote(,)dnl
-         alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
-         | mmix )
-changequote([,])dnl
-           gl_cv_host_cpu_c_abi_32bit=no
-           ;;
+       # CPUs that only support a 32-bit ABI.
+       arc \
+       | bfin \
+       | cris* \
+       | csky \
+       | epiphany \
+       | ft32 \
+       | h8300 \
+       | m68k \
+       | microblaze | microblazeel \
+       | nds32 | nds32le | nds32be \
+       | nios2 | nios2eb | nios2el \
+       | or1k* \
+       | or32 \
+       | sh | sh[1234] | sh[1234]e[lb] \
+       | tic6x \
+       | xtensa* )
+         gl_cv_host_cpu_c_abi_32bit=yes
+         ;;
 
+       # CPUs that only support a 64-bit ABI.
 changequote(,)dnl
-         i[34567]86 )
+       alpha | alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] \
+       | mmix )
 changequote([,])dnl
-           gl_cv_host_cpu_c_abi_32bit=yes
-           ;;
-
-         x86_64 )
-           # On x86_64 systems, the C compiler may be generating code in one of
-           # these ABIs:
-           # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64.
-           # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64
-           #   with native Windows (mingw, MSVC).
-           # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32.
-           # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386.
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#if (defined __x86_64__ || defined __amd64__ \
-                       || defined _M_X64 || defined _M_AMD64) \
-                      && !(defined __ILP32__ || defined _ILP32)
-                   int ok;
-                  #else
-                   error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=no],
-             [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
-
-         arm* | aarch64 )
-           # Assume arm with EABI.
-           # On arm64 systems, the C compiler may be generating code in one of
-           # these ABIs:
-           # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64.
-           # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32.
-           # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf.
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#if defined __aarch64__ && !(defined __ILP32__ || defined _ILP32)
-                   int ok;
-                  #else
-                   error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=no],
-             [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
-
-         hppa1.0 | hppa1.1 | hppa2.0* | hppa64 )
-           # On hppa, the C compiler may be generating 32-bit code or 64-bit
-           # code. In the latter case, it defines _LP64 and __LP64__.
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#ifdef __LP64__
-                   int ok;
-                  #else
-                   error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=no],
-             [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
-
-         ia64* )
-           # On ia64 on HP-UX, the C compiler may be generating 64-bit code or
-           # 32-bit code. In the latter case, it defines _ILP32.
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#ifdef _ILP32
-                   int ok;
-                  #else
-                   error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=yes],
-             [gl_cv_host_cpu_c_abi_32bit=no])
-           ;;
-
-         mips* )
-           # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this
-           # at 32.
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64)
-                   int ok;
-                  #else
-                   error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=no],
-             [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
-
-         powerpc* )
-           # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD.
-           # No need to distinguish them here; the caller may distinguish
-           # them based on the OS.
-           # On powerpc64 systems, the C compiler may still be generating
-           # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may
-           # be generating 64-bit code.
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#if defined __powerpc64__ || defined __LP64__
-                   int ok;
-                  #else
-                   error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=no],
-             [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
-
-         rs6000 )
-           gl_cv_host_cpu_c_abi_32bit=yes
-           ;;
-
-         riscv32 | riscv64 )
-           # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
-           # Size of 'long' and 'void *':
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#if defined __LP64__
-                    int ok;
-                  #else
-                    error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=no],
-             [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
-
-         s390* )
-           # On s390x, the C compiler may be generating 64-bit (= s390x) code
-           # or 31-bit (= s390) code.
-           AC_COMPILE_IFELSE(
-             [AC_LANG_SOURCE(
-                [[#if defined __LP64__ || defined __s390x__
-                    int ok;
-                  #else
-                    error fail
-                  #endif
-                ]])],
-             [gl_cv_host_cpu_c_abi_32bit=no],
-             [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
+         gl_cv_host_cpu_c_abi_32bit=no
+         ;;
 
-         sparc | sparc64 )
-           # UltraSPARCs running Linux have `uname -m` = "sparc64", but the
-           # C compiler still generates 32-bit code.
+       *)
+         if test -n "$gl_cv_host_cpu_c_abi"; then
+           dnl gl_HOST_CPU_C_ABI has already been run. Use its result.
+           case "$gl_cv_host_cpu_c_abi" in
+             i386 | x86_64-x32 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | riscv*-ilp32* | s390 | sparc)
+               gl_cv_host_cpu_c_abi_32bit=yes ;;
+             x86_64 | alpha | arm64 | aarch64c | hppa64 | ia64 | mips64 | powerpc64 | powerpc64-elfv2 | riscv*-lp64* | s390x | sparc64 )
+               gl_cv_host_cpu_c_abi_32bit=no ;;
+             *)
+               gl_cv_host_cpu_c_abi_32bit=unknown ;;
+           esac
+         else
+           gl_cv_host_cpu_c_abi_32bit=unknown
+         fi
+         if test $gl_cv_host_cpu_c_abi_32bit = unknown; then
            AC_COMPILE_IFELSE(
              [AC_LANG_SOURCE(
-                [[#if defined __sparcv9 || defined __arch64__
-                   int ok;
-                  #else
-                   error fail
-                  #endif
+                [[int test_pointer_size[sizeof (void *) - 5];
                 ]])],
              [gl_cv_host_cpu_c_abi_32bit=no],
              [gl_cv_host_cpu_c_abi_32bit=yes])
-           ;;
-
-         *)
-           gl_cv_host_cpu_c_abi_32bit=unknown
-           ;;
-       esac
-     fi
+         fi
+         ;;
+     esac
     ])
 
   HOST_CPU_C_ABI_32BIT="$gl_cv_host_cpu_c_abi_32bit"
diff --git a/m4/iconv.m4 b/m4/iconv.m4
index 0005795..2a7edd3 100644
--- a/m4/iconv.m4
+++ b/m4/iconv.m4
@@ -1,5 +1,5 @@
-# iconv.m4 serial 24
-dnl Copyright (C) 2000-2002, 2007-2014, 2016-2022 Free Software Foundation,
+# iconv.m4 serial 27
+dnl Copyright (C) 2000-2002, 2007-2014, 2016-2024 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -38,7 +38,7 @@ AC_DEFUN([AM_ICONV_LINK],
   dnl because if the user has installed libiconv and not disabled its use
   dnl via --without-libiconv-prefix, he wants to use it. The first
   dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed.
-  am_save_CPPFLAGS="$CPPFLAGS"
+  gl_saved_CPPFLAGS="$CPPFLAGS"
   AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
 
   AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
@@ -55,7 +55,7 @@ AC_DEFUN([AM_ICONV_LINK],
            iconv_close(cd);]])],
       [am_cv_func_iconv=yes])
     if test "$am_cv_func_iconv" != yes; then
-      am_save_LIBS="$LIBS"
+      gl_saved_LIBS="$LIBS"
       LIBS="$LIBS $LIBICONV"
       AC_LINK_IFELSE(
         [AC_LANG_PROGRAM(
@@ -68,14 +68,14 @@ AC_DEFUN([AM_ICONV_LINK],
              iconv_close(cd);]])],
         [am_cv_lib_iconv=yes]
         [am_cv_func_iconv=yes])
-      LIBS="$am_save_LIBS"
+      LIBS="$gl_saved_LIBS"
     fi
   ])
   if test "$am_cv_func_iconv" = yes; then
     AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
       dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11,
       dnl Solaris 10.
-      am_save_LIBS="$LIBS"
+      gl_saved_LIBS="$LIBS"
       if test $am_cv_lib_iconv = yes; then
         LIBS="$LIBS $LIBICONV"
       fi
@@ -205,7 +205,7 @@ AC_DEFUN([AM_ICONV_LINK],
            esac])
         test "$am_cv_func_iconv_works" = no || break
       done
-      LIBS="$am_save_LIBS"
+      LIBS="$gl_saved_LIBS"
     ])
     case "$am_cv_func_iconv_works" in
       *no) am_func_iconv=no am_cv_lib_iconv=no ;;
@@ -224,7 +224,7 @@ AC_DEFUN([AM_ICONV_LINK],
   else
     dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
     dnl either.
-    CPPFLAGS="$am_save_CPPFLAGS"
+    CPPFLAGS="$gl_saved_CPPFLAGS"
     LIBICONV=
     LTLIBICONV=
   fi
@@ -234,12 +234,6 @@ AC_DEFUN([AM_ICONV_LINK],
 
 dnl Define AM_ICONV using AC_DEFUN_ONCE, in order to avoid warnings like
 dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
-dnl This is tricky because of the way 'aclocal' is implemented:
-dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN.
-dnl   Otherwise aclocal's initial scan pass would miss the macro definition.
-dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions.
-dnl   Otherwise aclocal would emit many "Use of uninitialized value $1"
-dnl   warnings.
 AC_DEFUN_ONCE([AM_ICONV],
 [
   AM_ICONV_LINK
@@ -280,4 +274,20 @@ size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, si
        ICONV_CONST="const"
      fi
     ])
+
+  dnl A summary result, for those packages which want to print a summary at the
+  dnl end of the configuration.
+  if test "$am_func_iconv" = yes; then
+    if test -n "$LIBICONV"; then
+      am_cv_func_iconv_summary='yes, in libiconv'
+    else
+      am_cv_func_iconv_summary='yes, in libc'
+    fi
+  else
+    if test "$am_cv_func_iconv" = yes; then
+      am_cv_func_iconv_summary='not working, consider installing GNU libiconv'
+    else
+      am_cv_func_iconv_summary='no, consider installing GNU libiconv'
+    fi
+  fi
 ])
diff --git a/m4/intlmacosx.m4 b/m4/intlmacosx.m4
index ecc88d6..450eb88 100644
--- a/m4/intlmacosx.m4
+++ b/m4/intlmacosx.m4
@@ -1,5 +1,5 @@
-# intlmacosx.m4 serial 8 (gettext-0.20.2)
-dnl Copyright (C) 2004-2014, 2016, 2019-2022 Free Software Foundation, Inc.
+# intlmacosx.m4 serial 10 (gettext-0.23)
+dnl Copyright (C) 2004-2014, 2016, 2019-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -20,7 +20,7 @@ AC_DEFUN([gt_INTL_MACOSX],
   dnl Check for API introduced in Mac OS X 10.4.
   AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
     [gt_cv_func_CFPreferencesCopyAppValue],
-    [gt_save_LIBS="$LIBS"
+    [gt_saved_LIBS="$LIBS"
      LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
      AC_LINK_IFELSE(
        [AC_LANG_PROGRAM(
@@ -28,7 +28,7 @@ AC_DEFUN([gt_INTL_MACOSX],
           [[CFPreferencesCopyAppValue(NULL, NULL)]])],
        [gt_cv_func_CFPreferencesCopyAppValue=yes],
        [gt_cv_func_CFPreferencesCopyAppValue=no])
-     LIBS="$gt_save_LIBS"])
+     LIBS="$gt_saved_LIBS"])
   if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
     AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], [1],
       [Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
@@ -43,7 +43,7 @@ AC_DEFUN([gt_INTL_MACOSX],
   dnl CFPreferencesCopyAppValue still returns, namely ll_CC where ll is the
   dnl first among the preferred languages and CC is the territory.
   AC_CACHE_CHECK([for CFLocaleCopyPreferredLanguages], [gt_cv_func_CFLocaleCopyPreferredLanguages],
-    [gt_save_LIBS="$LIBS"
+    [gt_saved_LIBS="$LIBS"
      LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
      AC_LINK_IFELSE(
        [AC_LANG_PROGRAM(
@@ -51,7 +51,7 @@ AC_DEFUN([gt_INTL_MACOSX],
           [[CFLocaleCopyPreferredLanguages();]])],
        [gt_cv_func_CFLocaleCopyPreferredLanguages=yes],
        [gt_cv_func_CFLocaleCopyPreferredLanguages=no])
-     LIBS="$gt_save_LIBS"])
+     LIBS="$gt_saved_LIBS"])
   if test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
     AC_DEFINE([HAVE_CFLOCALECOPYPREFERREDLANGUAGES], [1],
       [Define to 1 if you have the Mac OS X function CFLocaleCopyPreferredLanguages in the CoreFoundation framework.])
@@ -59,7 +59,11 @@ AC_DEFUN([gt_INTL_MACOSX],
   INTL_MACOSX_LIBS=
   if test $gt_cv_func_CFPreferencesCopyAppValue = yes \
      || test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
-    INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
+    dnl Starting with macOS version 14, CoreFoundation relies on CoreServices,
+    dnl and we have to link it in explicitly, otherwise an exception
+    dnl NSInvalidArgumentException "unrecognized selector sent to instance"
+    dnl occurs.
+    INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation -Wl,-framework -Wl,CoreServices"
   fi
   AC_SUBST([INTL_MACOSX_LIBS])
 ])
diff --git a/m4/lib-ld.m4 b/m4/lib-ld.m4
index 934207a..b17e0fd 100644
--- a/m4/lib-ld.m4
+++ b/m4/lib-ld.m4
@@ -1,5 +1,5 @@
-# lib-ld.m4 serial 10
-dnl Copyright (C) 1996-2003, 2009-2022 Free Software Foundation, Inc.
+# lib-ld.m4 serial 13
+dnl Copyright (C) 1996-2003, 2009-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -29,7 +29,7 @@ AC_DEFUN([AC_LIB_PROG_LD],
 AC_REQUIRE([AC_CANONICAL_HOST])dnl
 
 AC_ARG_WITH([gnu-ld],
-    [AS_HELP_STRING([--with-gnu-ld],
+    [AS_HELP_STRING([[--with-gnu-ld]],
         [assume the C compiler uses GNU ld [default=no]])],
     [test "$withval" = no || with_gnu_ld=yes],
     [with_gnu_ld=no])dnl
@@ -67,7 +67,7 @@ else
     if test "$GCC" = yes; then
       # Check if gcc -print-prog-name=ld gives a path.
       case $host in
-        *-*-mingw*)
+        *-*-mingw* | windows*)
           # gcc leaves a trailing carriage return which upsets mingw
           acl_output=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
         *)
@@ -97,9 +97,9 @@ else
     fi
     if test -n "$ac_prog"; then
       # Search for $ac_prog in $PATH.
-      acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+      acl_saved_IFS="$IFS"; IFS=$PATH_SEPARATOR
       for ac_dir in $PATH; do
-        IFS="$acl_save_ifs"
+        IFS="$acl_saved_IFS"
         test -z "$ac_dir" && ac_dir=.
         if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
           acl_cv_path_LD="$ac_dir/$ac_prog"
@@ -116,7 +116,7 @@ else
           esac
         fi
       done
-      IFS="$acl_save_ifs"
+      IFS="$acl_saved_IFS"
     fi
     case $host in
       *-*-aix*)
diff --git a/m4/lib-link.m4 b/m4/lib-link.m4
index 3b75bcd..1a7c127 100644
--- a/m4/lib-link.m4
+++ b/m4/lib-link.m4
@@ -1,5 +1,5 @@
-# lib-link.m4 serial 33
-dnl Copyright (C) 2001-2022 Free Software Foundation, Inc.
+# lib-link.m4 serial 34
+dnl Copyright (C) 2001-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -69,11 +69,11 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
   dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
   dnl because if the user has installed lib[]Name and not disabled its use
   dnl via --without-lib[]Name-prefix, he wants to use it.
-  ac_save_CPPFLAGS="$CPPFLAGS"
+  acl_saved_CPPFLAGS="$CPPFLAGS"
   AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
 
   AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
-    ac_save_LIBS="$LIBS"
+    acl_saved_LIBS="$LIBS"
     dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
     dnl because these -l options might require -L options that are present in
     dnl LIBS. -l options benefit only from the -L options listed before it.
@@ -89,7 +89,7 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
       [AC_LANG_PROGRAM([[$3]], [[$4]])],
       [ac_cv_lib[]Name=yes],
       [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
-    LIBS="$ac_save_LIBS"
+    LIBS="$acl_saved_LIBS"
   ])
   if test "$ac_cv_lib[]Name" = yes; then
     HAVE_LIB[]NAME=yes
@@ -100,7 +100,7 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
     HAVE_LIB[]NAME=no
     dnl If $LIB[]NAME didn't lead to a usable library, we don't need
     dnl $INC[]NAME either.
-    CPPFLAGS="$ac_save_CPPFLAGS"
+    CPPFLAGS="$acl_saved_CPPFLAGS"
     LIB[]NAME=
     LTLIB[]NAME=
     LIB[]NAME[]_PREFIX=
@@ -224,7 +224,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
     additional_libdir3=
   fi
   dnl Search the library and its dependencies in $additional_libdir and
-  dnl $LDFLAGS. Using breadth-first-seach.
+  dnl $LDFLAGS. Use breadth-first search.
   LIB[]NAME=
   LTLIB[]NAME=
   INC[]NAME=
@@ -537,12 +537,12 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
               dnl Read the .la file. It defines the variables
               dnl dlname, library_names, old_library, dependency_libs, current,
               dnl age, revision, installed, dlopen, dlpreopen, libdir.
-              save_libdir="$libdir"
+              saved_libdir="$libdir"
               case "$found_la" in
                 */* | *\\*) . "$found_la" ;;
                 *) . "./$found_la" ;;
               esac
-              libdir="$save_libdir"
+              libdir="$saved_libdir"
               dnl We use only dependency_libs.
               for dep in $dependency_libs; do
                 case "$dep" in
@@ -682,18 +682,18 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
         alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
       done
       dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
-      acl_save_libdir="$libdir"
+      acl_saved_libdir="$libdir"
       libdir="$alldirs"
       eval flag=\"$acl_hardcode_libdir_flag_spec\"
-      libdir="$acl_save_libdir"
+      libdir="$acl_saved_libdir"
       LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
     else
       dnl The -rpath options are cumulative.
       for found_dir in $rpathdirs; do
-        acl_save_libdir="$libdir"
+        acl_saved_libdir="$libdir"
         libdir="$found_dir"
         eval flag=\"$acl_hardcode_libdir_flag_spec\"
-        libdir="$acl_save_libdir"
+        libdir="$acl_saved_libdir"
         LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
       done
     fi
@@ -790,18 +790,18 @@ AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
             for dir in $rpathdirs; do
               alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
             done
-            acl_save_libdir="$libdir"
+            acl_saved_libdir="$libdir"
             libdir="$alldirs"
             eval flag=\"$acl_hardcode_libdir_flag_spec\"
-            libdir="$acl_save_libdir"
+            libdir="$acl_saved_libdir"
             $1="$flag"
           else
             dnl The -rpath options are cumulative.
             for dir in $rpathdirs; do
-              acl_save_libdir="$libdir"
+              acl_saved_libdir="$libdir"
               libdir="$dir"
               eval flag=\"$acl_hardcode_libdir_flag_spec\"
-              libdir="$acl_save_libdir"
+              libdir="$acl_saved_libdir"
               $1="${$1}${$1:+ }$flag"
             done
           fi
diff --git a/m4/lib-prefix.m4 b/m4/lib-prefix.m4
index 999f712..f327c6e 100644
--- a/m4/lib-prefix.m4
+++ b/m4/lib-prefix.m4
@@ -1,5 +1,5 @@
-# lib-prefix.m4 serial 20
-dnl Copyright (C) 2001-2005, 2008-2022 Free Software Foundation, Inc.
+# lib-prefix.m4 serial 22
+dnl Copyright (C) 2001-2005, 2008-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -126,10 +126,10 @@ AC_DEFUN([AC_LIB_PREPARE_PREFIX],
   else
     acl_final_exec_prefix="$exec_prefix"
   fi
-  acl_save_prefix="$prefix"
+  acl_saved_prefix="$prefix"
   prefix="$acl_final_prefix"
   eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
-  prefix="$acl_save_prefix"
+  prefix="$acl_saved_prefix"
 ])
 
 dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
@@ -137,13 +137,13 @@ dnl variables prefix and exec_prefix bound to the values they will have
 dnl at the end of the configure script.
 AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
 [
-  acl_save_prefix="$prefix"
+  acl_saved_prefix="$prefix"
   prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
+  acl_saved_exec_prefix="$exec_prefix"
   exec_prefix="$acl_final_exec_prefix"
   $1
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+  exec_prefix="$acl_saved_exec_prefix"
+  prefix="$acl_saved_prefix"
 ])
 
 dnl AC_LIB_PREPARE_MULTILIB creates
@@ -256,6 +256,15 @@ changequote([,])dnl
            esac
          fi
          ;;
+       netbsd*)
+         dnl On NetBSD/sparc64, there is a 'sparc' subdirectory that contains
+         dnl 32-bit libraries.
+         if test $HOST_CPU_C_ABI_32BIT != no; then
+           case "$host_cpu" in
+             sparc*) acl_libdirstem2=lib/sparc ;;
+           esac
+         fi
+         ;;
        *)
          dnl If $CC generates code for a 32-bit ABI, the libraries are
          dnl surely under $prefix/lib or $prefix/lib32, not $prefix/lib64.
@@ -280,7 +289,7 @@ changequote([,])dnl
            fi
          fi
          if test -n "$searchpath"; then
-           acl_save_IFS="${IFS= 	}"; IFS=":"
+           acl_saved_IFS="${IFS= 	}"; IFS=":"
            for searchdir in $searchpath; do
              if test -d "$searchdir"; then
                case "$searchdir" in
@@ -297,7 +306,7 @@ changequote([,])dnl
                esac
              fi
            done
-           IFS="$acl_save_IFS"
+           IFS="$acl_saved_IFS"
            if test $HOST_CPU_C_ABI_32BIT = yes; then
              # 32-bit ABI.
              acl_libdirstem3=
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 717e769..c5be643 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1,6 +1,6 @@
 # libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
 #
-#   Copyright (C) 1996-2001, 2003-2019, 2021-2022 Free Software
+#   Copyright (C) 1996-2001, 2003-2019, 2021-2024 Free Software
 #   Foundation, Inc.
 #   Written by Gordon Matzigkeit, 1996
 #
@@ -9,13 +9,13 @@
 # modifications, as long as this notice is preserved.
 
 m4_define([_LT_COPYING], [dnl
-# Copyright (C) 2014 Free Software Foundation, Inc.
+# Copyright (C) 2024 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.
 
 # GNU Libtool is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of of the License, or
+# the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.
 #
 # As a special exception to the GNU General Public License, if you
@@ -32,7 +32,7 @@ m4_define([_LT_COPYING], [dnl
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ])
 
-# serial 59 LT_INIT
+# serial 61 LT_INIT
 
 
 # LT_PREREQ(VERSION)
@@ -616,7 +616,7 @@ m4_popdef([AS_MESSAGE_LOG_FD])])])# _LT_GENERATED_FILE_INIT
 # LT_OUTPUT
 # ---------
 # This macro allows early generation of the libtool script (before
-# AC_OUTPUT is called), incase it is used in configure for compilation
+# AC_OUTPUT is called), in case it is used in configure for compilation
 # tests.
 AC_DEFUN([LT_OUTPUT],
 [: ${CONFIG_LT=./config.lt}
@@ -651,9 +651,9 @@ m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
 m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
 configured by $[0], generated by m4_PACKAGE_STRING.
 
-Copyright (C) 2011 Free Software Foundation, Inc.
+Copyright (C) 2024 Free Software Foundation, Inc.
 This config.lt script is free software; the Free Software Foundation
-gives unlimited permision to copy, distribute and modify it."
+gives unlimited permission to copy, distribute and modify it."
 
 while test 0 != $[#]
 do
@@ -1255,7 +1255,9 @@ lt_sysroot=
 case $with_sysroot in #(
  yes)
    if test yes = "$GCC"; then
-     lt_sysroot=`$CC --print-sysroot 2>/dev/null`
+     # Trim trailing / since we'll always append absolute paths and we want
+     # to avoid //, if only for less confusing output for the user.
+     lt_sysroot=`$CC --print-sysroot 2>/dev/null | $SED 's:/\+$::'`
    fi
    ;; #(
  /*)
@@ -1367,7 +1369,7 @@ mips64*-*linux*)
   ;;
 
 x86_64-*kfreebsd*-gnu|x86_64-*linux*|powerpc*-*linux*| \
-s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*|x86_64-gnu*)
   # Find out what ABI is being produced by ac_compile, and set linker
   # options accordingly.  Note that the listed cases only cover the
   # situations where additional linker options are needed (such as when
@@ -1382,7 +1384,7 @@ s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
 	  x86_64-*kfreebsd*-gnu)
 	    LD="${LD-ld} -m elf_i386_fbsd"
 	    ;;
-	  x86_64-*linux*)
+	  x86_64-*linux*|x86_64-gnu*)
 	    case `$FILECMD conftest.o` in
 	      *x86-64*)
 		LD="${LD-ld} -m elf32_x86_64"
@@ -1411,7 +1413,7 @@ s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
 	  x86_64-*kfreebsd*-gnu)
 	    LD="${LD-ld} -m elf_x86_64_fbsd"
 	    ;;
-	  x86_64-*linux*)
+	  x86_64-*linux*|x86_64-gnu*)
 	    LD="${LD-ld} -m elf_x86_64"
 	    ;;
 	  powerpcle-*linux*)
@@ -1494,7 +1496,7 @@ _LT_DECL([], [AR], [1], [The archiver])
 
 # 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
+# higher priority because that's what people were doing historically (setting
 # ARFLAGS for automake and AR_FLAGS for libtool).  FIXME: Make the AR_FLAGS
 # variable obsoleted/removed.
 
@@ -1555,15 +1557,8 @@ old_postinstall_cmds='chmod 644 $oldlib'
 old_postuninstall_cmds=
 
 if test -n "$RANLIB"; then
-  case $host_os in
-  bitrig* | openbsd*)
-    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
-    ;;
-  *)
-    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
-    ;;
-  esac
   old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib"
+  old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
 fi
 
 case $host_os in
@@ -1702,7 +1697,7 @@ AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
     lt_cv_sys_max_cmd_len=-1;
     ;;
 
-  cygwin* | mingw* | cegcc*)
+  cygwin* | mingw* | windows* | cegcc*)
     # On Win9x/ME, this test blows up -- it succeeds, but takes
     # about 5 minutes as the teststring grows exponentially.
     # Worse, since 9x/ME are not pre-emptively multitasking,
@@ -1724,7 +1719,7 @@ AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
     lt_cv_sys_max_cmd_len=8192;
     ;;
 
-  bitrig* | darwin* | dragonfly* | freebsd* | midnightbsd* | netbsd* | openbsd*)
+  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`
@@ -1945,7 +1940,7 @@ else
     lt_cv_dlopen_self=yes
     ;;
 
-  mingw* | pw32* | cegcc*)
+  mingw* | windows* | pw32* | cegcc*)
     lt_cv_dlopen=LoadLibrary
     lt_cv_dlopen_libs=
     ;;
@@ -2313,7 +2308,7 @@ if test yes = "$GCC"; then
     *) lt_awk_arg='/^libraries:/' ;;
   esac
   case $host_os in
-    mingw* | cegcc*) lt_sed_strip_eq='s|=\([[A-Za-z]]:\)|\1|g' ;;
+    mingw* | windows* | cegcc*) lt_sed_strip_eq='s|=\([[A-Za-z]]:\)|\1|g' ;;
     *) lt_sed_strip_eq='s|=/|/|g' ;;
   esac
   lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
@@ -2371,7 +2366,7 @@ BEGIN {RS = " "; FS = "/|\n";} {
   # AWK program above erroneously prepends '/' to C:/dos/paths
   # for these hosts.
   case $host_os in
-    mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
+    mingw* | windows* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
       $SED 's|/\([[A-Za-z]]:\)|\1|g'` ;;
   esac
   sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
@@ -2540,7 +2535,7 @@ bsdi[[45]]*)
   # libtool to hard-code these into programs
   ;;
 
-cygwin* | mingw* | pw32* | cegcc*)
+cygwin* | mingw* | windows* | pw32* | cegcc*)
   version_type=windows
   shrext_cmds=.dll
   need_version=no
@@ -2572,7 +2567,7 @@ cygwin* | mingw* | pw32* | cegcc*)
 m4_if([$1], [],[
       sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
       ;;
-    mingw* | cegcc*)
+    mingw* | windows* | cegcc*)
       # MinGW DLLs use traditional 'lib' prefix
       soname_spec='$libname`echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext'
       ;;
@@ -2591,7 +2586,7 @@ m4_if([$1], [],[
     library_names_spec='$libname.dll.lib'
 
     case $build_os in
-    mingw*)
+    mingw* | windows*)
       sys_lib_search_path_spec=
       lt_save_ifs=$IFS
       IFS=';'
@@ -2839,7 +2834,7 @@ linux*android*)
   version_type=none # Android doesn't support versioned libraries.
   need_lib_prefix=no
   need_version=no
-  library_names_spec='$libname$release$shared_ext'
+  library_names_spec='$libname$release$shared_ext $libname$shared_ext'
   soname_spec='$libname$release$shared_ext'
   finish_cmds=
   shlibpath_var=LD_LIBRARY_PATH
@@ -2851,8 +2846,9 @@ linux*android*)
   hardcode_into_libs=yes
 
   dynamic_linker='Android linker'
-  # Don't embed -rpath directories since the linker doesn't support them.
-  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+  # -rpath works at least for libraries that are not overridden by
+  # libraries installed in system locations.
+  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir'
   ;;
 
 # This must be glibc/ELF.
@@ -2886,7 +2882,7 @@ linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*)
   # before this can be enabled.
   hardcode_into_libs=yes
 
-  # Ideally, we could use ldconfig to report *all* directores which are
+  # Ideally, we could use ldconfig to report *all* directories which are
   # searched for libraries, however this is still not possible.  Aside from not
   # being certain /sbin/ldconfig is available, command
   # 'ldconfig -N -X -v | grep ^/' on 64bit Fedora does not report /usr/lib64,
@@ -2943,7 +2939,7 @@ newsos6)
   dynamic_linker='ldqnx.so'
   ;;
 
-openbsd* | bitrig*)
+openbsd*)
   version_type=sunos
   sys_lib_dlsearch_path_spec=/usr/lib
   need_lib_prefix=no
@@ -3275,7 +3271,7 @@ if test yes = "$GCC"; then
   # Check if gcc -print-prog-name=ld gives a path.
   AC_MSG_CHECKING([for ld used by $CC])
   case $host in
-  *-*-mingw*)
+  *-*-mingw* | *-*-windows*)
     # gcc leaves a trailing carriage return, which upsets mingw
     ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
   *)
@@ -3384,7 +3380,7 @@ case $reload_flag in
 esac
 reload_cmds='$LD$reload_flag -o $output$reload_objs'
 case $host_os in
-  cygwin* | mingw* | pw32* | cegcc*)
+  cygwin* | mingw* | windows* | pw32* | cegcc*)
     if test yes != "$GCC"; then
       reload_cmds=false
     fi
@@ -3456,7 +3452,6 @@ lt_cv_deplibs_check_method='unknown'
 # 'none' -- dependencies not supported.
 # 'unknown' -- same as none, but documents that we really don't know.
 # 'pass_all' -- all dependencies passed with no checks.
-# 'test_compile' -- check by making test program.
 # 'file_magic [[regex]]' -- check by looking for files in library path
 # that responds to the $file_magic_cmd with a given extended regex.
 # If you have 'file' or equivalent on your system and you're not sure
@@ -3483,7 +3478,7 @@ cygwin*)
   lt_cv_file_magic_cmd='func_win32_libid'
   ;;
 
-mingw* | pw32*)
+mingw* | windows* | pw32*)
   # Base MSYS/MinGW do not provide the 'file' command needed by
   # func_win32_libid shell function, so use a weaker test based on 'objdump',
   # unless we find 'file', for example because we are cross-compiling.
@@ -3583,7 +3578,7 @@ newos6*)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
-openbsd* | bitrig*)
+openbsd*)
   if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then
     lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
   else
@@ -3647,7 +3642,7 @@ file_magic_glob=
 want_nocaseglob=no
 if test "$build" = "$host"; then
   case $host_os in
-  mingw* | pw32*)
+  mingw* | windows* | pw32*)
     if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then
       want_nocaseglob=yes
     else
@@ -3699,7 +3694,7 @@ else
 	# Tru64's nm complains that /dev/null is an invalid object file
 	# MSYS converts /dev/null to NUL, MinGW nm treats NUL as empty
 	case $build_os in
-	mingw*) lt_bad_file=conftest.nm/nofile ;;
+	mingw* | windows*) lt_bad_file=conftest.nm/nofile ;;
 	*) lt_bad_file=/dev/null ;;
 	esac
 	case `"$tmp_nm" -B $lt_bad_file 2>&1 | $SED '1q'` in
@@ -3790,7 +3785,7 @@ lt_cv_sharedlib_from_linklib_cmd,
 [lt_cv_sharedlib_from_linklib_cmd='unknown'
 
 case $host_os in
-cygwin* | mingw* | pw32* | cegcc*)
+cygwin* | mingw* | windows* | pw32* | cegcc*)
   # two different shell functions defined in ltmain.sh;
   # decide which one to use based on capabilities of $DLLTOOL
   case `$DLLTOOL --help 2>&1` in
@@ -3822,16 +3817,16 @@ _LT_DECL([], [sharedlib_from_linklib_cmd], [1],
 m4_defun([_LT_PATH_MANIFEST_TOOL],
 [AC_CHECK_TOOL(MANIFEST_TOOL, mt, :)
 test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt
-AC_CACHE_CHECK([if $MANIFEST_TOOL is a manifest tool], [lt_cv_path_mainfest_tool],
-  [lt_cv_path_mainfest_tool=no
+AC_CACHE_CHECK([if $MANIFEST_TOOL is a manifest tool], [lt_cv_path_manifest_tool],
+  [lt_cv_path_manifest_tool=no
   echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&AS_MESSAGE_LOG_FD
   $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out
   cat conftest.err >&AS_MESSAGE_LOG_FD
   if $GREP 'Manifest Tool' conftest.out > /dev/null; then
-    lt_cv_path_mainfest_tool=yes
+    lt_cv_path_manifest_tool=yes
   fi
   rm -f conftest*])
-if test yes != "$lt_cv_path_mainfest_tool"; then
+if test yes != "$lt_cv_path_manifest_tool"; then
   MANIFEST_TOOL=:
 fi
 _LT_DECL([], [MANIFEST_TOOL], [1], [Manifest tool])dnl
@@ -3860,7 +3855,7 @@ AC_DEFUN([LT_LIB_M],
 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
 LIBM=
 case $host in
-*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-pw32* | *-*-darwin*)
+*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-mingw* | *-*-pw32* | *-*-darwin*)
   # These system don't have libm, or don't need it
   ;;
 *-ncr-sysv4.3*)
@@ -3935,7 +3930,7 @@ case $host_os in
 aix*)
   symcode='[[BCDT]]'
   ;;
-cygwin* | mingw* | pw32* | cegcc*)
+cygwin* | mingw* | windows* | pw32* | cegcc*)
   symcode='[[ABCDGISTW]]'
   ;;
 hpux*)
@@ -3950,7 +3945,7 @@ osf*)
   symcode='[[BCDEGQRST]]'
   ;;
 solaris*)
-  symcode='[[BDRT]]'
+  symcode='[[BCDRT]]'
   ;;
 sco3.2v5*)
   symcode='[[DT]]'
@@ -4014,7 +4009,7 @@ $lt_c_name_lib_hook\
 # Handle CRLF in mingw tool chain
 opt_cr=
 case $build_os in
-mingw*)
+mingw* | windows*)
   opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
   ;;
 esac
@@ -4241,7 +4236,7 @@ m4_if([$1], [CXX], [
     beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
       # PIC is the default for these OSes.
       ;;
-    mingw* | cygwin* | os2* | pw32* | cegcc*)
+    mingw* | windows* | cygwin* | os2* | pw32* | cegcc*)
       # This hack is so that the source file can tell whether it is being
       # built for inclusion in a dll (and should export symbols for example).
       # Although the cygwin gcc ignores -fPIC, still need this for old-style
@@ -4317,7 +4312,7 @@ m4_if([$1], [CXX], [
 	  ;;
 	esac
 	;;
-      mingw* | cygwin* | os2* | pw32* | cegcc*)
+      mingw* | windows* | cygwin* | os2* | pw32* | cegcc*)
 	# This hack is so that the source file can tell whether it is being
 	# built for inclusion in a dll (and should export symbols for example).
 	m4_if([$1], [GCJ], [],
@@ -4565,7 +4560,7 @@ m4_if([$1], [CXX], [
       # PIC is the default for these OSes.
       ;;
 
-    mingw* | cygwin* | pw32* | os2* | cegcc*)
+    mingw* | windows* | cygwin* | pw32* | os2* | cegcc*)
       # This hack is so that the source file can tell whether it is being
       # built for inclusion in a dll (and should export symbols for example).
       # Although the cygwin gcc ignores -fPIC, still need this for old-style
@@ -4669,7 +4664,7 @@ m4_if([$1], [CXX], [
       esac
       ;;
 
-    mingw* | cygwin* | pw32* | os2* | cegcc*)
+    mingw* | windows* | cygwin* | pw32* | os2* | cegcc*)
       # This hack is so that the source file can tell whether it is being
       # built for inclusion in a dll (and should export symbols for example).
       m4_if([$1], [GCJ], [],
@@ -4711,6 +4706,12 @@ m4_if([$1], [CXX], [
 	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
 	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
         ;;
+      *flang)
+        # Flang compiler.
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
       # icc used to be incompatible with GCC.
       # ICC 10 doesn't accept -KPIC any more.
       icc* | ifort*)
@@ -4944,7 +4945,7 @@ m4_if([$1], [CXX], [
   pw32*)
     _LT_TAGVAR(export_symbols_cmds, $1)=$ltdll_cmds
     ;;
-  cygwin* | mingw* | cegcc*)
+  cygwin* | mingw* | windows* | cegcc*)
     case $cc_basename in
     cl* | icl*)
       _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
@@ -5002,7 +5003,7 @@ dnl Note also adjust exclude_expsyms for C++ above.
   extract_expsyms_cmds=
 
   case $host_os in
-  cygwin* | mingw* | pw32* | cegcc*)
+  cygwin* | mingw* | windows* | pw32* | cegcc*)
     # 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++ or Intel C++ Compiler.
@@ -5014,7 +5015,7 @@ dnl Note also adjust exclude_expsyms for C++ above.
     # we just hope/assume this is gcc and not c89 (= MSVC++ or ICC)
     with_gnu_ld=yes
     ;;
-  openbsd* | bitrig*)
+  openbsd*)
     with_gnu_ld=no
     ;;
   esac
@@ -5117,7 +5118,7 @@ _LT_EOF
       fi
       ;;
 
-    cygwin* | mingw* | pw32* | cegcc*)
+    cygwin* | mingw* | windows* | pw32* | cegcc*)
       # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
       # as there is no search path for DLLs.
       _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
@@ -5173,7 +5174,7 @@ _LT_EOF
 	cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~
 	$CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~
 	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(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)='@'
       ;;
@@ -5574,7 +5575,7 @@ _LT_EOF
       _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
       ;;
 
-    cygwin* | mingw* | pw32* | cegcc*)
+    cygwin* | mingw* | windows* | pw32* | cegcc*)
       # When not using gcc, we currently assume that we are using
       # Microsoft Visual C++ or Intel C++ Compiler.
       # hardcode_libdir_flag_spec is actually meaningless, as there is
@@ -5591,14 +5592,14 @@ _LT_EOF
 	# Tell ltmain to make .dll files, not .so files.
 	shrext_cmds=.dll
 	# FIXME: Setting linknames here is a bad hack.
-	_LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames='
+	_LT_TAGVAR(archive_cmds, $1)='$CC -Fe $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames='
 	_LT_TAGVAR(archive_expsym_cmds, $1)='if _LT_DLL_DEF_P([$export_symbols]); then
             cp "$export_symbols" "$output_objdir/$soname.def";
             echo "$tool_output_objdir$soname.def" > "$output_objdir/$soname.exp";
           else
             $SED -e '\''s/^/-link -EXPORT:/'\'' < $export_symbols > $output_objdir/$soname.exp;
           fi~
-          $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
+          $CC -Fe $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
           linknames='
 	# The linker will not automatically build a static lib if we build a DLL.
 	# _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
@@ -5836,7 +5837,7 @@ _LT_EOF
     *nto* | *qnx*)
       ;;
 
-    openbsd* | bitrig*)
+    openbsd*)
       if test -f /usr/libexec/ld.so; then
 	_LT_TAGVAR(hardcode_direct, $1)=yes
 	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
@@ -5879,7 +5880,7 @@ _LT_EOF
 	cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~
 	$CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~
 	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(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, $1)='@'
       ;;
@@ -6173,7 +6174,7 @@ _LT_TAGDECL([], [hardcode_direct], [0],
 _LT_TAGDECL([], [hardcode_direct_absolute], [0],
     [Set to "yes" if using DIR/libNAME$shared_ext during linking hardcodes
     DIR into the resulting binary and the resulting library dependency is
-    "absolute", i.e impossible to change by setting $shlibpath_var if the
+    "absolute", i.e. impossible to change by setting $shlibpath_var if the
     library is relocated])
 _LT_TAGDECL([], [hardcode_minus_L], [0],
     [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
@@ -6420,8 +6421,7 @@ if test yes != "$_lt_caught_CXX_error"; then
         wlarc='$wl'
 
         # ancient GNU ld didn't support --whole-archive et. al.
-        if eval "`$CC -print-prog-name=ld` --help 2>&1" |
-	  $GREP 'no-whole-archive' > /dev/null; then
+        if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
           _LT_TAGVAR(whole_archive_flag_spec, $1)=$wlarc'--whole-archive$convenience '$wlarc'--no-whole-archive'
         else
           _LT_TAGVAR(whole_archive_flag_spec, $1)=
@@ -6441,7 +6441,7 @@ if test yes != "$_lt_caught_CXX_error"; then
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
 
     else
       GXX=no
@@ -6650,7 +6650,7 @@ if test yes != "$_lt_caught_CXX_error"; then
         esac
         ;;
 
-      cygwin* | mingw* | pw32* | cegcc*)
+      cygwin* | mingw* | windows* | pw32* | cegcc*)
 	case $GXX,$cc_basename in
 	,cl* | no,cl* | ,icl* | no,icl*)
 	  # Native MSVC or ICC
@@ -6749,7 +6749,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	  cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~
 	  $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~
 	  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(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, $1)='@'
 	;;
@@ -6817,7 +6817,7 @@ if test yes != "$_lt_caught_CXX_error"; then
             # explicitly linking system object files so we need to strip them
             # from the output so that they don't get included in the library
             # dependencies.
-            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "[[-]]L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
             ;;
           *)
             if test yes = "$GXX"; then
@@ -6882,7 +6882,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	    # explicitly linking system object files so we need to strip them
 	    # from the output so that they don't get included in the library
 	    # dependencies.
-	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "[[-]]L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
 	    ;;
           *)
 	    if test yes = "$GXX"; then
@@ -7130,7 +7130,7 @@ if test yes != "$_lt_caught_CXX_error"; then
         _LT_TAGVAR(ld_shlibs, $1)=yes
 	;;
 
-      openbsd* | bitrig*)
+      openbsd*)
 	if test -f /usr/libexec/ld.so; then
 	  _LT_TAGVAR(hardcode_direct, $1)=yes
 	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
@@ -7221,7 +7221,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	      # Commands to make compiler produce verbose output that lists
 	      # what "hidden" libraries, object files and flags are used when
 	      # linking a shared library.
-	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
 
 	    else
 	      # FIXME: insert proper C++ library support
@@ -7305,7 +7305,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	        # Commands to make compiler produce verbose output that lists
 	        # what "hidden" libraries, object files and flags are used when
 	        # linking a shared library.
-	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
 	      else
 	        # g++ 2.7 appears to require '-G' NOT '-shared' on this
 	        # platform.
@@ -7316,7 +7316,7 @@ if test yes != "$_lt_caught_CXX_error"; then
 	        # Commands to make compiler produce verbose output that lists
 	        # what "hidden" libraries, object files and flags are used when
 	        # linking a shared library.
-	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
 	      fi
 
 	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $wl$libdir'
@@ -7554,10 +7554,11 @@ if AC_TRY_EVAL(ac_compile); then
     case $prev$p in
 
     -L* | -R* | -l*)
-       # Some compilers place space between "-{L,R}" and the path.
+       # Some compilers place space between "-{L,R,l}" and the path.
        # Remove the space.
-       if test x-L = "$p" ||
-          test x-R = "$p"; then
+       if test x-L = x"$p" ||
+          test x-R = x"$p" ||
+          test x-l = x"$p"; then
 	 prev=$p
 	 continue
        fi
@@ -8215,7 +8216,7 @@ AC_SUBST([DLLTOOL])
 # ----------------
 # 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], [:])
+[AC_CHECK_PROG([FILECMD], [file], [:])
 _LT_DECL([], [FILECMD], [1], [A file(cmd) program that detects file types])
 ])# _LD_DECL_FILECMD
 
@@ -8231,73 +8232,6 @@ _LT_DECL([], [SED], [1], [A sed program that does not truncate output])
 _LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
     [Sed that helps us avoid accidentally triggering echo(1) options like -n])
 ])# _LT_DECL_SED
-
-m4_ifndef([AC_PROG_SED], [
-############################################################
-# NOTE: This macro has been submitted for inclusion into   #
-#  GNU Autoconf as AC_PROG_SED.  When it is available in   #
-#  a released version of Autoconf we should remove this    #
-#  macro and use it instead.                               #
-############################################################
-
-m4_defun([AC_PROG_SED],
-[AC_MSG_CHECKING([for a sed that does not truncate output])
-AC_CACHE_VAL(lt_cv_path_SED,
-[# Loop through the user's path and test for sed and gsed.
-# Then use that list of sed's as ones to test for truncation.
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for lt_ac_prog in sed gsed; do
-    for ac_exec_ext in '' $ac_executable_extensions; do
-      if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then
-        lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext"
-      fi
-    done
-  done
-done
-IFS=$as_save_IFS
-lt_ac_max=0
-lt_ac_count=0
-# Add /usr/xpg4/bin/sed as it is typically found on Solaris
-# along with /bin/sed that truncates output.
-for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do
-  test ! -f "$lt_ac_sed" && continue
-  cat /dev/null > conftest.in
-  lt_ac_count=0
-  echo $ECHO_N "0123456789$ECHO_C" >conftest.in
-  # Check for GNU sed and select it if it is found.
-  if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then
-    lt_cv_path_SED=$lt_ac_sed
-    break
-  fi
-  while true; do
-    cat conftest.in conftest.in >conftest.tmp
-    mv conftest.tmp conftest.in
-    cp conftest.in conftest.nl
-    echo >>conftest.nl
-    $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break
-    cmp -s conftest.out conftest.nl || break
-    # 10000 chars as input seems more than enough
-    test 10 -lt "$lt_ac_count" && break
-    lt_ac_count=`expr $lt_ac_count + 1`
-    if test "$lt_ac_count" -gt "$lt_ac_max"; then
-      lt_ac_max=$lt_ac_count
-      lt_cv_path_SED=$lt_ac_sed
-    fi
-  done
-done
-])
-SED=$lt_cv_path_SED
-AC_SUBST([SED])
-AC_MSG_RESULT([$SED])
-])#AC_PROG_SED
-])#m4_ifndef
-
-# Old name:
-AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED])
 dnl aclocal-1.4 backwards compatibility:
 dnl AC_DEFUN([LT_AC_PROG_SED], [])
 
@@ -8344,7 +8278,7 @@ AC_CACHE_VAL(lt_cv_to_host_file_cmd,
 [case $host in
   *-*-mingw* )
     case $build in
-      *-*-mingw* ) # actually msys
+      *-*-mingw* | *-*-windows* ) # actually msys
         lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
         ;;
       *-*-cygwin* )
@@ -8357,7 +8291,7 @@ AC_CACHE_VAL(lt_cv_to_host_file_cmd,
     ;;
   *-*-cygwin* )
     case $build in
-      *-*-mingw* ) # actually msys
+      *-*-mingw* | *-*-windows* ) # actually msys
         lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
         ;;
       *-*-cygwin* )
@@ -8383,9 +8317,9 @@ AC_CACHE_VAL(lt_cv_to_tool_file_cmd,
 [#assume ordinary cross tools, or native build.
 lt_cv_to_tool_file_cmd=func_convert_file_noop
 case $host in
-  *-*-mingw* )
+  *-*-mingw* | *-*-windows* )
     case $build in
-      *-*-mingw* ) # actually msys
+      *-*-mingw* | *-*-windows* ) # actually msys
         lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32
         ;;
     esac
diff --git a/m4/ltoptions.m4 b/m4/ltoptions.m4
index b0b5e9c..6dfe99f 100644
--- a/m4/ltoptions.m4
+++ b/m4/ltoptions.m4
@@ -1,6 +1,6 @@
 # Helper functions for option handling.                    -*- Autoconf -*-
 #
-#   Copyright (C) 2004-2005, 2007-2009, 2011-2019, 2021-2022 Free
+#   Copyright (C) 2004-2005, 2007-2009, 2011-2019, 2021-2024 Free
 #   Software Foundation, Inc.
 #   Written by Gary V. Vaughan, 2004
 #
@@ -8,7 +8,7 @@
 # unlimited permission to copy and/or distribute it, with or without
 # modifications, as long as this notice is preserved.
 
-# serial 8 ltoptions.m4
+# serial 9 ltoptions.m4
 
 # This is to help aclocal find these macros, as it can't see m4_define.
 AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
@@ -128,7 +128,7 @@ LT_OPTION_DEFINE([LT_INIT], [win32-dll],
 [enable_win32_dll=yes
 
 case $host in
-*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
+*-*-cygwin* | *-*-mingw* | *-*-windows* | *-*-pw32* | *-*-cegcc*)
   AC_CHECK_TOOL(AS, as, false)
   AC_CHECK_TOOL(DLLTOOL, dlltool, false)
   AC_CHECK_TOOL(OBJDUMP, objdump, false)
diff --git a/m4/ltsugar.m4 b/m4/ltsugar.m4
index 902508b..5b5c80a 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, 2011-2019, 2021-2022 Free Software
+# Copyright (C) 2004-2005, 2007-2008, 2011-2019, 2021-2024 Free Software
 # Foundation, Inc.
 # Written by Gary V. Vaughan, 2004
 #
diff --git a/m4/ltversion.m4 b/m4/ltversion.m4
index 0026c21..82887f7 100644
--- a/m4/ltversion.m4
+++ b/m4/ltversion.m4
@@ -1,6 +1,6 @@
 # ltversion.m4 -- version numbers			-*- Autoconf -*-
 #
-#   Copyright (C) 2004, 2011-2019, 2021-2022 Free Software Foundation,
+#   Copyright (C) 2004, 2011-2019, 2021-2024 Free Software Foundation,
 #   Inc.
 #   Written by Scott James Remnant, 2004
 #
@@ -10,15 +10,15 @@
 
 # @configure_input@
 
-# serial 4249 ltversion.m4
+# serial 4337 ltversion.m4
 # This file is part of GNU Libtool
 
-m4_define([LT_PACKAGE_VERSION], [2.4.7.4-1ec8f-dirty])
-m4_define([LT_PACKAGE_REVISION], [2.4.7.4])
+m4_define([LT_PACKAGE_VERSION], [2.5.0.1-38c1-dirty])
+m4_define([LT_PACKAGE_REVISION], [2.5.0.1])
 
 AC_DEFUN([LTVERSION_VERSION],
-[macro_version='2.4.7.4-1ec8f-dirty'
-macro_revision='2.4.7.4'
+[macro_version='2.5.0.1-38c1-dirty'
+macro_revision='2.5.0.1'
 _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 0f7a875..22b5346 100644
--- a/m4/lt~obsolete.m4
+++ b/m4/lt~obsolete.m4
@@ -1,6 +1,6 @@
 # lt~obsolete.m4 -- aclocal satisfying obsolete definitions.    -*-Autoconf-*-
 #
-#   Copyright (C) 2004-2005, 2007, 2009, 2011-2019, 2021-2022 Free
+#   Copyright (C) 2004-2005, 2007, 2009, 2011-2019, 2021-2024 Free
 #   Software Foundation, Inc.
 #   Written by Scott James Remnant, 2004.
 #
diff --git a/m4/nls.m4 b/m4/nls.m4
index 7c11c90..4d37d37 100644
--- a/m4/nls.m4
+++ b/m4/nls.m4
@@ -1,5 +1,5 @@
 # nls.m4 serial 6 (gettext-0.20.2)
-dnl Copyright (C) 1995-2003, 2005-2006, 2008-2014, 2016, 2019-2022 Free
+dnl Copyright (C) 1995-2003, 2005-2006, 2008-2014, 2016, 2019-2024 Free
 dnl Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/po.m4 b/m4/po.m4
index 2f14f8e..bc6df99 100644
--- a/m4/po.m4
+++ b/m4/po.m4
@@ -1,5 +1,6 @@
 # po.m4 serial 32 (gettext-0.21.1)
-dnl Copyright (C) 1995-2014, 2016, 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1995-2014, 2016, 2018-2022, 2024 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posix-shell.m4 b/m4/posix-shell.m4
index 4c56193..95a19a9 100644
--- a/m4/posix-shell.m4
+++ b/m4/posix-shell.m4
@@ -1,3 +1,5 @@
+dnl SPDX-License-Identifier: FSFULLR
+
 # Find a POSIX-conforming shell.
 
 # Copyright (C) 2007-2008 Free Software Foundation, Inc.
diff --git a/m4/progtest.m4 b/m4/progtest.m4
index 4a5b0b4..8dd4d60 100644
--- a/m4/progtest.m4
+++ b/m4/progtest.m4
@@ -1,5 +1,5 @@
-# progtest.m4 serial 9 (gettext-0.21.1)
-dnl Copyright (C) 1996-2003, 2005, 2008-2022 Free Software Foundation, Inc.
+# progtest.m4 serial 10 (gettext-0.23)
+dnl Copyright (C) 1996-2003, 2005, 2008-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -60,9 +60,9 @@ AC_CACHE_VAL([ac_cv_path_$1],
     ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
     ;;
   *)
-    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+    gt_saved_IFS="$IFS"; IFS=$PATH_SEPARATOR
     for ac_dir in m4_if([$5], , $PATH, [$5]); do
-      IFS="$ac_save_IFS"
+      IFS="$gt_saved_IFS"
       test -z "$ac_dir" && ac_dir=.
       for ac_exec_ext in '' $ac_executable_extensions; do
         if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
@@ -74,7 +74,7 @@ AC_CACHE_VAL([ac_cv_path_$1],
         fi
       done
     done
-    IFS="$ac_save_IFS"
+    IFS="$gt_saved_IFS"
 dnl If no 4th arg is given, leave the cache variable unset,
 dnl so AC_PATH_PROGS will keep looking.
 m4_if([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
diff --git a/m4/tuklib_common.m4 b/m4/tuklib_common.m4
index d942a25..c837703 100644
--- a/m4/tuklib_common.m4
+++ b/m4/tuklib_common.m4
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: 0BSD
+
+#############################################################################
 #
 # SYNOPSIS
 #
@@ -7,13 +10,11 @@
 #
 #   Common checks for tuklib.
 #
-# COPYING
-#
-#   Author: Lasse Collin
+#############################################################################
 #
-#   This file has been put into the public domain.
-#   You can do whatever you want with this file.
+# Author: Lasse Collin
 #
+#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_COMMON], [
 AC_REQUIRE([AC_CANONICAL_HOST])
diff --git a/m4/tuklib_cpucores.m4 b/m4/tuklib_cpucores.m4
index 873812d..a228a8f 100644
--- a/m4/tuklib_cpucores.m4
+++ b/m4/tuklib_cpucores.m4
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: 0BSD
+
+#############################################################################
 #
 # SYNOPSIS
 #
@@ -17,13 +20,11 @@
 #       GetSystemInfo() is used on Cygwin)
 #     - pstat_getdynamic(): HP-UX
 #
-# COPYING
-#
-#   Author: Lasse Collin
+#############################################################################
 #
-#   This file has been put into the public domain.
-#   You can do whatever you want with this file.
+# Author: Lasse Collin
 #
+#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_CPUCORES], [
 AC_REQUIRE([TUKLIB_COMMON])
diff --git a/m4/tuklib_integer.m4 b/m4/tuklib_integer.m4
index ab9a405..906ecf1 100644
--- a/m4/tuklib_integer.m4
+++ b/m4/tuklib_integer.m4
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: 0BSD
+
+#############################################################################
 #
 # SYNOPSIS
 #
@@ -11,13 +14,11 @@
 #     - Does the hardware support fast unaligned access to 16-bit, 32-bit,
 #       and 64-bit integers
 #
-# COPYING
-#
-#   Author: Lasse Collin
+#############################################################################
 #
-#   This file has been put into the public domain.
-#   You can do whatever you want with this file.
+# Author: Lasse Collin
 #
+#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_INTEGER], [
 AC_REQUIRE([TUKLIB_COMMON])
@@ -65,22 +66,42 @@ AC_MSG_CHECKING([if unaligned memory access should be used])
 AC_ARG_ENABLE([unaligned-access], AS_HELP_STRING([--enable-unaligned-access],
 		[Enable if the system supports *fast* unaligned memory access
 		with 16-bit, 32-bit, and 64-bit integers. By default,
-		this is enabled only on x86, x86_64, big endian PowerPC,
-		and some ARM systems.]),
+		this is enabled on x86, x86-64,
+		32/64-bit big endian PowerPC,
+		64-bit little endian PowerPC,
+		and some ARM, ARM64, and RISC-V systems.]),
 	[], [enable_unaligned_access=auto])
 if test "x$enable_unaligned_access" = xauto ; then
-	# TODO: There may be other architectures, on which unaligned access
-	# is OK.
+	# NOTE: There might be other architectures on which unaligned access
+	# is fast.
 	case $host_cpu in
-		i?86|x86_64|powerpc|powerpc64)
+		i?86|x86_64|powerpc|powerpc64|powerpc64le)
 			enable_unaligned_access=yes
 			;;
-		arm*|aarch64*)
+		arm*|aarch64*|riscv*)
 			# On 32-bit and 64-bit ARM, GCC and Clang
 			# #define __ARM_FEATURE_UNALIGNED if
 			# unaligned access is supported.
+			#
+			# Exception: GCC at least up to 13.2.0
+			# defines it even when using -mstrict-align
+			# so in that case this autodetection goes wrong.
+			# Most of the time -mstrict-align isn't used so it
+			# shouldn't be a common problem in practice. See:
+			# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111555
+			#
+			# RISC-V C API Specification says that if
+			# __riscv_misaligned_fast is defined then
+			# unaligned access is known to be fast.
+			#
+			# MSVC is handled as a special case: We assume that
+			# 32/64-bit ARM supports fast unaligned access.
+			# If MSVC gets RISC-V support then this will assume
+			# fast unaligned access on RISC-V too.
 			AC_COMPILE_IFELSE([AC_LANG_SOURCE([
-#ifndef __ARM_FEATURE_UNALIGNED
+#if !defined(__ARM_FEATURE_UNALIGNED) \
+		&& !defined(__riscv_misaligned_fast) \
+		&& !defined(_MSC_VER)
 compile error
 #endif
 int main(void) { return 0; }
diff --git a/m4/tuklib_mbstr.m4 b/m4/tuklib_mbstr.m4
index 991be9b..0139834 100644
--- a/m4/tuklib_mbstr.m4
+++ b/m4/tuklib_mbstr.m4
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: 0BSD
+
+#############################################################################
 #
 # SYNOPSIS
 #
@@ -15,13 +18,11 @@
 #   functions, but each function is put into a separate .c file so
 #   that it is possible to pick only what is strictly needed.
 #
-# COPYING
-#
-#   Author: Lasse Collin
+#############################################################################
 #
-#   This file has been put into the public domain.
-#   You can do whatever you want with this file.
+# Author: Lasse Collin
 #
+#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_MBSTR], [
 AC_REQUIRE([TUKLIB_COMMON])
diff --git a/m4/tuklib_physmem.m4 b/m4/tuklib_physmem.m4
index 5931785..b5e0b1a 100644
--- a/m4/tuklib_physmem.m4
+++ b/m4/tuklib_physmem.m4
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: 0BSD
+
+#############################################################################
 #
 # SYNOPSIS
 #
@@ -29,13 +32,11 @@
 #     - sysinfo() works on Linux/dietlibc and probably on other Linux
 #       systems whose libc may lack sysconf().
 #
-# COPYING
-#
-#   Author: Lasse Collin
+#############################################################################
 #
-#   This file has been put into the public domain.
-#   You can do whatever you want with this file.
+# Author: Lasse Collin
 #
+#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_PHYSMEM], [
 AC_REQUIRE([TUKLIB_COMMON])
diff --git a/m4/tuklib_progname.m4 b/m4/tuklib_progname.m4
index 7685d06..b70d063 100644
--- a/m4/tuklib_progname.m4
+++ b/m4/tuklib_progname.m4
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: 0BSD
+
+#############################################################################
 #
 # SYNOPSIS
 #
@@ -11,18 +14,16 @@
 #   This .m4 file is needed allow this module to use glibc's
 #   program_invocation_name.
 #
-# COPYING
-#
-#   Author: Lasse Collin
+#############################################################################
 #
-#   This file has been put into the public domain.
-#   You can do whatever you want with this file.
+# Author: Lasse Collin
 #
+#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_PROGNAME], [
 AC_REQUIRE([TUKLIB_COMMON])
 AC_CHECK_DECL([program_invocation_name], [AC_DEFINE(
 	[HAVE_PROGRAM_INVOCATION_NAME], [1],
-	[Define to 1 if `program_invocation_name' is declared in <errno.h>.])],
+	[Define to 1 if 'program_invocation_name' is declared in <errno.h>.])],
 	[], [#include <errno.h>])
 ])dnl
diff --git a/m4/visibility.m4 b/m4/visibility.m4
index f0468e8..4a741c5 100644
--- a/m4/visibility.m4
+++ b/m4/visibility.m4
@@ -1,5 +1,8 @@
-# visibility.m4 serial 8
-dnl Copyright (C) 2005, 2008, 2010-2023 Free Software Foundation, Inc.
+dnl SPDX-License-Identifier: FSFULLR
+
+# visibility.m4
+# serial 9
+dnl Copyright (C) 2005, 2008, 2010-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -31,18 +34,18 @@ AC_DEFUN([gl_VISIBILITY],
     dnl user has put into $CC $CFLAGS $CPPFLAGS.
     AC_CACHE_CHECK([whether the -Werror option is usable],
       [gl_cv_cc_vis_werror],
-      [gl_save_CFLAGS="$CFLAGS"
+      [gl_saved_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS -Werror"
        AC_COMPILE_IFELSE(
          [AC_LANG_PROGRAM([[]], [[]])],
          [gl_cv_cc_vis_werror=yes],
          [gl_cv_cc_vis_werror=no])
-       CFLAGS="$gl_save_CFLAGS"
+       CFLAGS="$gl_saved_CFLAGS"
       ])
     dnl Now check whether visibility declarations are supported.
     AC_CACHE_CHECK([for simple visibility declarations],
       [gl_cv_cc_visibility],
-      [gl_save_CFLAGS="$CFLAGS"
+      [gl_saved_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS -fvisibility=hidden"
        dnl We use the option -Werror and a function dummyfunc, because on some
        dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning
@@ -68,7 +71,7 @@ AC_DEFUN([gl_VISIBILITY],
             [[]])],
          [gl_cv_cc_visibility=yes],
          [gl_cv_cc_visibility=no])
-       CFLAGS="$gl_save_CFLAGS"
+       CFLAGS="$gl_saved_CFLAGS"
       ])
     if test $gl_cv_cc_visibility = yes; then
       CFLAG_VISIBILITY="-fvisibility=hidden"