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diff --git a/m4/fsusage.m4 b/m4/fsusage.m4
--- a/m4/fsusage.m4
+++ /dev/null
@@ -1,260 +0,0 @@
-#serial 16
-# Obtaining file system usage information.
-
-# Copyright (C) 1997, 1998, 2000, 2001, 2003, 2004, 2005 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.
-
-# Written by Jim Meyering.
-
-AC_DEFUN([gl_FSUSAGE],
-[
- AC_LIBSOURCES([fsusage.c, fsusage.h])
-
- AC_CHECK_HEADERS_ONCE(sys/param.h)
- AC_CHECK_HEADERS_ONCE(sys/vfs.h sys/fs_types.h)
- AC_CHECK_HEADERS(sys/mount.h, [], [],
- [AC_INCLUDES_DEFAULT
- [#if HAVE_SYS_PARAM_H
- #include <sys/param.h>
- #endif]])
- gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no])
- if test $gl_cv_fs_space = yes; then
- AC_LIBOBJ(fsusage)
- gl_PREREQ_FSUSAGE_EXTRA
- fi
-])
-
-# Try to determine how a program can obtain file system usage information.
-# If successful, define the appropriate symbol (see fsusage.c) and
-# execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND.
-#
-# gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-
-AC_DEFUN([gl_FILE_SYSTEM_USAGE],
-[
-
-echo "checking how to get file system space usage..."
-ac_fsusage_space=no
-
-# Perform only the link test since it seems there are no variants of the
-# statvfs function. This check is more than just AC_CHECK_FUNCS(statvfs)
-# because that got a false positive on SCO OSR5. Adding the declaration
-# of a `struct statvfs' causes this test to fail (as it should) on such
-# systems. That system is reported to work fine with STAT_STATFS4 which
-# is what it gets when this test fails.
-if test $ac_fsusage_space = no; then
- # SVR4
- AC_CACHE_CHECK([for statvfs function (SVR4)], fu_cv_sys_stat_statvfs,
- [AC_TRY_LINK([#include <sys/types.h>
-#ifdef __GLIBC__
-Do not use statvfs on systems with GNU libc, because that function stats
-all preceding entries in /proc/mounts, and that makes df hang if even
-one of the corresponding file systems is hard-mounted, but not available.
-#endif
-#include <sys/statvfs.h>],
- [struct statvfs fsd; statvfs (0, &fsd);],
- fu_cv_sys_stat_statvfs=yes,
- fu_cv_sys_stat_statvfs=no)])
- if test $fu_cv_sys_stat_statvfs = yes; then
- ac_fsusage_space=yes
- AC_DEFINE(STAT_STATVFS, 1,
- [ Define if there is a function named statvfs. (SVR4)])
- fi
-fi
-
-if test $ac_fsusage_space = no; then
- # DEC Alpha running OSF/1
- AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
- AC_CACHE_VAL(fu_cv_sys_stat_statfs3_osf1,
- [AC_TRY_RUN([
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/mount.h>
- main ()
- {
- struct statfs fsd;
- fsd.f_fsize = 0;
- exit (statfs (".", &fsd, sizeof (struct statfs)));
- }],
- fu_cv_sys_stat_statfs3_osf1=yes,
- fu_cv_sys_stat_statfs3_osf1=no,
- fu_cv_sys_stat_statfs3_osf1=no)])
- AC_MSG_RESULT($fu_cv_sys_stat_statfs3_osf1)
- if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
- ac_fsusage_space=yes
- AC_DEFINE(STAT_STATFS3_OSF1, 1,
- [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
- fi
-fi
-
-if test $ac_fsusage_space = no; then
-# AIX
- AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl
-member (AIX, 4.3BSD)])
- AC_CACHE_VAL(fu_cv_sys_stat_statfs2_bsize,
- [AC_TRY_RUN([
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-#ifdef HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
-#ifdef HAVE_SYS_VFS_H
-#include <sys/vfs.h>
-#endif
- main ()
- {
- struct statfs fsd;
- fsd.f_bsize = 0;
- exit (statfs (".", &fsd));
- }],
- fu_cv_sys_stat_statfs2_bsize=yes,
- fu_cv_sys_stat_statfs2_bsize=no,
- fu_cv_sys_stat_statfs2_bsize=no)])
- AC_MSG_RESULT($fu_cv_sys_stat_statfs2_bsize)
- if test $fu_cv_sys_stat_statfs2_bsize = yes; then
- ac_fsusage_space=yes
- AC_DEFINE(STAT_STATFS2_BSIZE, 1,
-[ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
- (4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
- fi
-fi
-
-if test $ac_fsusage_space = no; then
-# SVR3
- AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
- AC_CACHE_VAL(fu_cv_sys_stat_statfs4,
- [AC_TRY_RUN([#include <sys/types.h>
-#include <sys/statfs.h>
- main ()
- {
- struct statfs fsd;
- exit (statfs (".", &fsd, sizeof fsd, 0));
- }],
- fu_cv_sys_stat_statfs4=yes,
- fu_cv_sys_stat_statfs4=no,
- fu_cv_sys_stat_statfs4=no)])
- AC_MSG_RESULT($fu_cv_sys_stat_statfs4)
- if test $fu_cv_sys_stat_statfs4 = yes; then
- ac_fsusage_space=yes
- AC_DEFINE(STAT_STATFS4, 1,
- [ Define if statfs takes 4 args. (SVR3, Dynix, Irix, Dolphin)])
- fi
-fi
-
-if test $ac_fsusage_space = no; then
-# 4.4BSD and NetBSD
- AC_MSG_CHECKING([for two-argument statfs with statfs.fsize dnl
-member (4.4BSD and NetBSD)])
- AC_CACHE_VAL(fu_cv_sys_stat_statfs2_fsize,
- [AC_TRY_RUN([#include <sys/types.h>
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-#ifdef HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
- main ()
- {
- struct statfs fsd;
- fsd.f_fsize = 0;
- exit (statfs (".", &fsd));
- }],
- fu_cv_sys_stat_statfs2_fsize=yes,
- fu_cv_sys_stat_statfs2_fsize=no,
- fu_cv_sys_stat_statfs2_fsize=no)])
- AC_MSG_RESULT($fu_cv_sys_stat_statfs2_fsize)
- if test $fu_cv_sys_stat_statfs2_fsize = yes; then
- ac_fsusage_space=yes
- AC_DEFINE(STAT_STATFS2_FSIZE, 1,
-[ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
- (4.4BSD, NetBSD)])
- fi
-fi
-
-if test $ac_fsusage_space = no; then
- # Ultrix
- AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
- AC_CACHE_VAL(fu_cv_sys_stat_fs_data,
- [AC_TRY_RUN([#include <sys/types.h>
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-#ifdef HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
-#ifdef HAVE_SYS_FS_TYPES_H
-#include <sys/fs_types.h>
-#endif
- main ()
- {
- struct fs_data fsd;
- /* Ultrix's statfs returns 1 for success,
- 0 for not mounted, -1 for failure. */
- exit (statfs (".", &fsd) != 1);
- }],
- fu_cv_sys_stat_fs_data=yes,
- fu_cv_sys_stat_fs_data=no,
- fu_cv_sys_stat_fs_data=no)])
- AC_MSG_RESULT($fu_cv_sys_stat_fs_data)
- if test $fu_cv_sys_stat_fs_data = yes; then
- ac_fsusage_space=yes
- AC_DEFINE(STAT_STATFS2_FS_DATA, 1,
-[ Define if statfs takes 2 args and the second argument has
- type struct fs_data. (Ultrix)])
- fi
-fi
-
-if test $ac_fsusage_space = no; then
- # SVR2
- AC_TRY_CPP([#include <sys/filsys.h>
- ],
- AC_DEFINE(STAT_READ_FILSYS, 1,
- [Define if there is no specific function for reading file systems usage
- information and you have the <sys/filsys.h> header file. (SVR2)])
- ac_fsusage_space=yes)
-fi
-
-AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
-
-])
-
-
-# Check for SunOS statfs brokenness wrt partitions 2GB and larger.
-# If <sys/vfs.h> exists and struct statfs has a member named f_spare,
-# enable the work-around code in fsusage.c.
-AC_DEFUN([gl_STATFS_TRUNCATES],
-[
- AC_MSG_CHECKING([for statfs that truncates block counts])
- AC_CACHE_VAL(fu_cv_sys_truncating_statfs,
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#if !defined(sun) && !defined(__sun)
-choke -- this is a workaround for a Sun-specific problem
-#endif
-#include <sys/types.h>
-#include <sys/vfs.h>]],
- [[struct statfs t; long c = *(t.f_spare);]])],
- [fu_cv_sys_truncating_statfs=yes],
- [fu_cv_sys_truncating_statfs=no])])
- if test $fu_cv_sys_truncating_statfs = yes; then
- AC_DEFINE(STATFS_TRUNCATES_BLOCK_COUNTS, 1,
- [Define if the block counts reported by statfs may be truncated to 2GB
- and the correct values may be stored in the f_spare array.
- (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
- SunOS 4.1.1 seems not to be affected.)])
- fi
- AC_MSG_RESULT($fu_cv_sys_truncating_statfs)
-])
-
-
-# Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
-AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
-[
- AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])
- AC_CHECK_HEADERS(dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h sys/statvfs.h)
- gl_STATFS_TRUNCATES
-])