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diff --git a/gl/m4/ls-mntd-fs.m4 b/gl/m4/ls-mntd-fs.m4
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--- a/gl/m4/ls-mntd-fs.m4
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@@ -1,357 +0,0 @@
-# serial 30
-# How to list mounted file systems.
-
-# Copyright (C) 1998-2004, 2006, 2009-2013 Free Software Foundation, Inc.
-#
-# This file is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-dnl From Jim Meyering.
-dnl
-dnl This is not pretty.  I've just taken the autoconf code and wrapped
-dnl it in an AC_DEFUN and made some other fixes.
-dnl
-
-# Replace Autoconf's AC_FUNC_GETMNTENT to work around a bug in Autoconf
-# through Autoconf 2.59.  We can remove this once we assume Autoconf 2.60
-# or later.
-AC_DEFUN([AC_FUNC_GETMNTENT],
-[# getmntent is in the standard C library on UNICOS, in -lsun on Irix 4,
-# -lseq on Dynix/PTX, -lgen on Unixware.
-AC_SEARCH_LIBS([getmntent], [sun seq gen])
-AC_CHECK_FUNCS([getmntent])
-])
-
-# gl_LIST_MOUNTED_FILE_SYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-AC_DEFUN([gl_LIST_MOUNTED_FILE_SYSTEMS],
-  [
-AC_CHECK_FUNCS([listmntent getmntinfo])
-AC_CHECK_HEADERS_ONCE([sys/param.h sys/statvfs.h])
-
-# We must include grp.h before ucred.h on OSF V4.0, since ucred.h uses
-# NGROUPS (as the array dimension for a struct member) without a definition.
-AC_CHECK_HEADERS([sys/ucred.h], [], [], [#include <grp.h>])
-
-AC_CHECK_HEADERS([sys/mount.h], [], [],
-  [AC_INCLUDES_DEFAULT
-   [#if HAVE_SYS_PARAM_H
-     #include <sys/param.h>
-    #endif]])
-
-AC_CHECK_HEADERS([mntent.h sys/fs_types.h])
-    getfsstat_includes="\
-$ac_includes_default
-#if HAVE_SYS_PARAM_H
-# include <sys/param.h> /* needed by powerpc-apple-darwin1.3.7 */
-#endif
-#if HAVE_SYS_UCRED_H
-# include <grp.h> /* needed for definition of NGROUPS */
-# include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */
-#endif
-#if HAVE_SYS_MOUNT_H
-# include <sys/mount.h>
-#endif
-#if HAVE_SYS_FS_TYPES_H
-# include <sys/fs_types.h> /* needed by powerpc-apple-darwin1.3.7 */
-#endif
-"
-AC_CHECK_MEMBERS([struct fsstat.f_fstypename],,,[$getfsstat_includes])
-
-# Determine how to get the list of mounted file systems.
-ac_list_mounted_fs=
-
-# If the getmntent function is available but not in the standard library,
-# make sure LIBS contains the appropriate -l option.
-AC_FUNC_GETMNTENT
-
-# This test must precede the ones for getmntent because Unicos-9 is
-# reported to have the getmntent function, but its support is incompatible
-# with other getmntent implementations.
-
-# NOTE: Normally, I wouldn't use a check for system type as I've done for
-# 'CRAY' below since that goes against the whole autoconf philosophy.  But
-# I think there is too great a chance that some non-Cray system has a
-# function named listmntent to risk the false positive.
-
-if test -z "$ac_list_mounted_fs"; then
-  # Cray UNICOS 9
-  AC_MSG_CHECKING([for listmntent of Cray/Unicos-9])
-  AC_CACHE_VAL([fu_cv_sys_mounted_cray_listmntent],
-    [fu_cv_sys_mounted_cray_listmntent=no
-      AC_EGREP_CPP([yes],
-        [#ifdef _CRAY
-yes
-#endif
-        ], [test $ac_cv_func_listmntent = yes \
-            && fu_cv_sys_mounted_cray_listmntent=yes]
-      )
-    ]
-  )
-  AC_MSG_RESULT([$fu_cv_sys_mounted_cray_listmntent])
-  if test $fu_cv_sys_mounted_cray_listmntent = yes; then
-    ac_list_mounted_fs=found
-    AC_DEFINE([MOUNTED_LISTMNTENT], [1],
-      [Define if there is a function named listmntent that can be used to
-       list all mounted file systems.  (UNICOS)])
-  fi
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # AIX.
-  AC_MSG_CHECKING([for mntctl function and struct vmount])
-  AC_CACHE_VAL([fu_cv_sys_mounted_vmount],
-  [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <fshelp.h>]])],
-    [fu_cv_sys_mounted_vmount=yes],
-    [fu_cv_sys_mounted_vmount=no])])
-  AC_MSG_RESULT([$fu_cv_sys_mounted_vmount])
-  if test $fu_cv_sys_mounted_vmount = yes; then
-    ac_list_mounted_fs=found
-    AC_DEFINE([MOUNTED_VMOUNT], [1],
-        [Define if there is a function named mntctl that can be used to read
-         the list of mounted file systems, and there is a system header file
-         that declares 'struct vmount'.  (AIX)])
-  fi
-fi
-
-if test $ac_cv_func_getmntent = yes; then
-
-  # This system has the getmntent function.
-  # Determine whether it's the one-argument variant or the two-argument one.
-
-  if test -z "$ac_list_mounted_fs"; then
-    # 4.3BSD, SunOS, HP-UX, Dynix, Irix
-    AC_MSG_CHECKING([for one-argument getmntent function])
-    AC_CACHE_VAL([fu_cv_sys_mounted_getmntent1],
-                 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-/* SunOS 4.1.x /usr/include/mntent.h needs this for FILE */
-#include <stdio.h>
-
-#include <mntent.h>
-#if !defined MOUNTED
-# if defined _PATH_MOUNTED      /* GNU libc  */
-#  define MOUNTED _PATH_MOUNTED
-# endif
-# if defined MNT_MNTTAB /* HP-UX.  */
-#  define MOUNTED MNT_MNTTAB
-# endif
-# if defined MNTTABNAME /* Dynix.  */
-#  define MOUNTED MNTTABNAME
-# endif
-#endif
-]],
-                      [[ struct mntent *mnt = 0; char *table = MOUNTED;
-                         if (sizeof mnt && sizeof table) return 0;]])],
-                    [fu_cv_sys_mounted_getmntent1=yes],
-                    [fu_cv_sys_mounted_getmntent1=no])])
-    AC_MSG_RESULT([$fu_cv_sys_mounted_getmntent1])
-    if test $fu_cv_sys_mounted_getmntent1 = yes; then
-      ac_list_mounted_fs=found
-      AC_DEFINE([MOUNTED_GETMNTENT1], [1],
-        [Define if there is a function named getmntent for reading the list
-         of mounted file systems, and that function takes a single argument.
-         (4.3BSD, SunOS, HP-UX, Dynix, Irix)])
-    fi
-  fi
-
-  if test -z "$ac_list_mounted_fs"; then
-    # SVR4
-    AC_MSG_CHECKING([for two-argument getmntent function])
-    AC_CACHE_VAL([fu_cv_sys_mounted_getmntent2],
-    [AC_EGREP_HEADER([getmntent], [sys/mnttab.h],
-      fu_cv_sys_mounted_getmntent2=yes,
-      fu_cv_sys_mounted_getmntent2=no)])
-    AC_MSG_RESULT([$fu_cv_sys_mounted_getmntent2])
-    if test $fu_cv_sys_mounted_getmntent2 = yes; then
-      ac_list_mounted_fs=found
-      AC_DEFINE([MOUNTED_GETMNTENT2], [1],
-        [Define if there is a function named getmntent for reading the list of
-         mounted file systems, and that function takes two arguments.  (SVR4)])
-      AC_CHECK_FUNCS([hasmntopt])
-    fi
-  fi
-
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # DEC Alpha running OSF/1, and Apple Darwin 1.3.
-  # powerpc-apple-darwin1.3.7 needs sys/param.h sys/ucred.h sys/fs_types.h
-
-  AC_MSG_CHECKING([for getfsstat function])
-  AC_CACHE_VAL([fu_cv_sys_mounted_getfsstat],
-  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
-#include <sys/types.h>
-#if HAVE_STRUCT_FSSTAT_F_FSTYPENAME
-# define FS_TYPE(Ent) ((Ent).f_fstypename)
-#else
-# define FS_TYPE(Ent) mnt_names[(Ent).f_type]
-#endif
-$getfsstat_includes]]
-,
-      [[struct statfs *stats;
-        int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT);
-        char *t = FS_TYPE (*stats); ]])],
-    [fu_cv_sys_mounted_getfsstat=yes],
-    [fu_cv_sys_mounted_getfsstat=no])])
-  AC_MSG_RESULT([$fu_cv_sys_mounted_getfsstat])
-  if test $fu_cv_sys_mounted_getfsstat = yes; then
-    ac_list_mounted_fs=found
-    AC_DEFINE([MOUNTED_GETFSSTAT], [1],
-              [Define if there is a function named getfsstat for reading the
-               list of mounted file systems.  (DEC Alpha running OSF/1)])
-  fi
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # SVR3
-  AC_MSG_CHECKING([for FIXME existence of three headers])
-  AC_CACHE_VAL([fu_cv_sys_mounted_fread_fstyp],
-    [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
-#include <sys/statfs.h>
-#include <sys/fstyp.h>
-#include <mnttab.h>]])],
-                       [fu_cv_sys_mounted_fread_fstyp=yes],
-                       [fu_cv_sys_mounted_fread_fstyp=no])])
-  AC_MSG_RESULT([$fu_cv_sys_mounted_fread_fstyp])
-  if test $fu_cv_sys_mounted_fread_fstyp = yes; then
-    ac_list_mounted_fs=found
-    AC_DEFINE([MOUNTED_FREAD_FSTYP], [1],
-      [Define if (like SVR2) there is no specific function for reading the
-       list of mounted file systems, and your system has these header files:
-       <sys/fstyp.h> and <sys/statfs.h>.  (SVR3)])
-  fi
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # 4.4BSD and DEC OSF/1.
-  AC_MSG_CHECKING([for getmntinfo function])
-  AC_CACHE_VAL([fu_cv_sys_mounted_getmntinfo],
-    [
-      test "$ac_cv_func_getmntinfo" = yes \
-          && fu_cv_sys_mounted_getmntinfo=yes \
-          || fu_cv_sys_mounted_getmntinfo=no
-    ])
-  AC_MSG_RESULT([$fu_cv_sys_mounted_getmntinfo])
-  if test $fu_cv_sys_mounted_getmntinfo = yes; then
-    AC_MSG_CHECKING([whether getmntinfo returns statvfs structures])
-    AC_CACHE_VAL([fu_cv_sys_mounted_getmntinfo2],
-      [
-        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#if HAVE_SYS_PARAM_H
-# include <sys/param.h>
-#endif
-#include <sys/types.h>
-#if HAVE_SYS_MOUNT_H
-# include <sys/mount.h>
-#endif
-#if HAVE_SYS_STATVFS_H
-# include <sys/statvfs.h>
-#endif
-extern
-#ifdef __cplusplus
-"C"
-#endif
-int getmntinfo (struct statfs **, int);
-            ]], [])],
-          [fu_cv_sys_mounted_getmntinfo2=no],
-          [fu_cv_sys_mounted_getmntinfo2=yes])
-      ])
-    AC_MSG_RESULT([$fu_cv_sys_mounted_getmntinfo2])
-    if test $fu_cv_sys_mounted_getmntinfo2 = no; then
-      ac_list_mounted_fs=found
-      AC_DEFINE([MOUNTED_GETMNTINFO], [1],
-                [Define if there is a function named getmntinfo for reading the
-                 list of mounted file systems and it returns an array of
-                 'struct statfs'.  (4.4BSD, Darwin)])
-    else
-      ac_list_mounted_fs=found
-      AC_DEFINE([MOUNTED_GETMNTINFO2], [1],
-                [Define if there is a function named getmntinfo for reading the
-                 list of mounted file systems and it returns an array of
-                 'struct statvfs'.  (NetBSD 3.0)])
-    fi
-  fi
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # Ultrix
-  AC_MSG_CHECKING([for getmnt function])
-  AC_CACHE_VAL([fu_cv_sys_mounted_getmnt],
-    [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
-#include <sys/fs_types.h>
-#include <sys/mount.h>]])],
-                       [fu_cv_sys_mounted_getmnt=yes],
-                       [fu_cv_sys_mounted_getmnt=no])])
-  AC_MSG_RESULT([$fu_cv_sys_mounted_getmnt])
-  if test $fu_cv_sys_mounted_getmnt = yes; then
-    ac_list_mounted_fs=found
-    AC_DEFINE([MOUNTED_GETMNT], [1],
-      [Define if there is a function named getmnt for reading the list of
-       mounted file systems.  (Ultrix)])
-  fi
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # BeOS
-  AC_CHECK_FUNCS([next_dev fs_stat_dev])
-  AC_CHECK_HEADERS([fs_info.h])
-  AC_MSG_CHECKING([for BEOS mounted file system support functions])
-  if test $ac_cv_header_fs_info_h = yes \
-      && test $ac_cv_func_next_dev = yes \
-        && test $ac_cv_func_fs_stat_dev = yes; then
-    fu_result=yes
-  else
-    fu_result=no
-  fi
-  AC_MSG_RESULT([$fu_result])
-  if test $fu_result = yes; then
-    ac_list_mounted_fs=found
-    AC_DEFINE([MOUNTED_FS_STAT_DEV], [1],
-      [Define if there are functions named next_dev and fs_stat_dev for
-       reading the list of mounted file systems.  (BeOS)])
-  fi
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # SVR2
-  AC_MSG_CHECKING([whether it is possible to resort to fread on /etc/mnttab])
-  AC_CACHE_VAL([fu_cv_sys_mounted_fread],
-    [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <mnttab.h>]])],
-                       [fu_cv_sys_mounted_fread=yes],
-                       [fu_cv_sys_mounted_fread=no])])
-  AC_MSG_RESULT([$fu_cv_sys_mounted_fread])
-  if test $fu_cv_sys_mounted_fread = yes; then
-    ac_list_mounted_fs=found
-    AC_DEFINE([MOUNTED_FREAD], [1],
-              [Define if there is no specific function for reading the list of
-               mounted file systems.  fread will be used to read /etc/mnttab.
-               (SVR2) ])
-  fi
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  # Interix / BSD alike statvfs
-  # the code is really interix specific, so make sure, we're on it.
-  case "$host" in
-  *-interix*)
-    AC_CHECK_FUNCS([statvfs])
-    if test $ac_cv_func_statvfs = yes; then
-      ac_list_mounted_fs=found
-      AC_DEFINE([MOUNTED_INTERIX_STATVFS], [1],
-                [Define if we are on interix, and ought to use statvfs plus
-                 some special knowledge on where mounted file systems can be
-                 found. (Interix)])
-    fi
-    ;;
-  esac
-fi
-
-if test -z "$ac_list_mounted_fs"; then
-  AC_MSG_ERROR([could not determine how to read list of mounted file systems])
-  # FIXME -- no need to abort building the whole package
-  # Can't build mountlist.c or anything that needs its functions
-fi
-
-AS_IF([test $ac_list_mounted_fs = found], [$1], [$2])
-
-  ])