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diff --git a/gl/m4/intlmacosx.m4 b/gl/m4/intlmacosx.m4
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--- a/gl/m4/intlmacosx.m4
+++ /dev/null
@@ -1,65 +0,0 @@
-# intlmacosx.m4 serial 8 (gettext-0.20.2)
-dnl Copyright (C) 2004-2014, 2016, 2019-2023 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.
-dnl
-dnl This file can be used in projects which are not available under
-dnl the GNU General Public License or the GNU Lesser General Public
-dnl License but which still want to provide support for the GNU gettext
-dnl functionality.
-dnl Please note that the actual code of the GNU gettext library is covered
-dnl by the GNU Lesser General Public License, and the rest of the GNU
-dnl gettext package is covered by the GNU General Public License.
-dnl They are *not* in the public domain.
-
-dnl Checks for special options needed on Mac OS X.
-dnl Defines INTL_MACOSX_LIBS.
-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="$LIBS"
-     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
-     AC_LINK_IFELSE(
-       [AC_LANG_PROGRAM(
-          [[#include <CoreFoundation/CFPreferences.h>]],
-          [[CFPreferencesCopyAppValue(NULL, NULL)]])],
-       [gt_cv_func_CFPreferencesCopyAppValue=yes],
-       [gt_cv_func_CFPreferencesCopyAppValue=no])
-     LIBS="$gt_save_LIBS"])
-  if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
-    AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], [1],
-      [Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
-  fi
-  dnl Don't check for the API introduced in Mac OS X 10.5, CFLocaleCopyCurrent,
-  dnl because in macOS 10.13.4 it has the following behaviour:
-  dnl When two or more languages are specified in the
-  dnl "System Preferences > Language & Region > Preferred Languages" panel,
-  dnl it returns en_CC where CC is the territory (even when English is not among
-  dnl the preferred languages!).  What we want instead is what
-  dnl CFLocaleCopyCurrent returned in earlier macOS releases and what
-  dnl CFPreferencesCopyAppValue still returns, namely ll_CC where ll is the
-  dnl first among the preferred languages and CC is the territory.
-  AC_CACHE_CHECK([for CFLocaleCopyPreferredLanguages], [gt_cv_func_CFLocaleCopyPreferredLanguages],
-    [gt_save_LIBS="$LIBS"
-     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
-     AC_LINK_IFELSE(
-       [AC_LANG_PROGRAM(
-          [[#include <CoreFoundation/CFLocale.h>]],
-          [[CFLocaleCopyPreferredLanguages();]])],
-       [gt_cv_func_CFLocaleCopyPreferredLanguages=yes],
-       [gt_cv_func_CFLocaleCopyPreferredLanguages=no])
-     LIBS="$gt_save_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.])
-  fi
-  INTL_MACOSX_LIBS=
-  if test $gt_cv_func_CFPreferencesCopyAppValue = yes \
-     || test $gt_cv_func_CFLocaleCopyPreferredLanguages = yes; then
-    INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
-  fi
-  AC_SUBST([INTL_MACOSX_LIBS])
-])