New file, from gnulib.

79 files changed, 1791 insertions, 0 deletions

diff --git a/m4/atexit.m4 b/m4/atexit.m4
new file mode 100644
index 000000000..dddc40e68
--- /dev/null
+++ b/m4/atexit.m4
@@ -0,0 +1,20 @@
+# atexit.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_ATEXIT],
+[
+  AC_REPLACE_FUNCS(atexit)
+  if test $ac_cv_func_atexit = no; then
+    gl_PREREQ_ATEXIT
+  fi
+])
+
+# Prerequisites of lib/atexit.c.
+AC_DEFUN([gl_PREREQ_ATEXIT], [
+  :
+])
diff --git a/m4/backupfile.m4 b/m4/backupfile.m4
new file mode 100644
index 000000000..1326bb2ab
--- /dev/null
+++ b/m4/backupfile.m4
@@ -0,0 +1,23 @@
+# backupfile.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_BACKUPFILE],
+[
+  dnl Prerequisites of lib/backupfile.c.
+  AC_REQUIRE([AC_HEADER_DIRENT])
+  AC_REQUIRE([AC_FUNC_CLOSEDIR_VOID])
+  AC_CHECK_HEADERS_ONCE(stdlib.h string.h)
+  AC_CHECK_DECLS_ONCE(getenv malloc)
+  jm_CHECK_TYPE_STRUCT_DIRENT_D_INO
+
+  dnl Prerequisites of lib/addext.c.
+  AC_REQUIRE([jm_AC_DOS])
+  AC_SYS_LONG_FILE_NAMES
+  AC_CHECK_HEADERS_ONCE(string.h unistd.h)
+  AC_CHECK_FUNCS(pathconf)
+])
diff --git a/m4/canon-host.m4 b/m4/canon-host.m4
new file mode 100644
index 000000000..61f66a51f
--- /dev/null
+++ b/m4/canon-host.m4
@@ -0,0 +1,22 @@
+# canon-host.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_CANON_HOST],
+[
+  dnl Prerequisites of lib/canon-host.c.
+  AC_CHECK_HEADERS_ONCE(stdlib.h string.h unistd.h)
+  AC_CHECK_HEADERS(netdb.h sys/socket.h netinet/in.h arpa/inet.h)
+
+  dnl Add any libraries as early as possible.
+  dnl In particular, inet_ntoa needs -lnsl at least on Solaris 2.5.1,
+  dnl so we have to add -lnsl to LIBS before checking for that function.
+  AC_SEARCH_LIBS(gethostbyname, [inet nsl])
+
+  dnl These come from -lnsl on Solaris 2.5.1.
+  AC_CHECK_FUNCS(gethostbyname gethostbyaddr inet_ntoa)
+])
diff --git a/m4/clock_time.m4 b/m4/clock_time.m4
new file mode 100644
index 000000000..e7e4e29ac
--- /dev/null
+++ b/m4/clock_time.m4
@@ -0,0 +1,24 @@
+# clock_time.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Check for clock_gettime and clock_settime, and sets LIB_CLOCK_GETTIME.
+AC_DEFUN([gl_CLOCK_TIME],
+[
+  # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
+  # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
+
+  # Save and restore LIBS so e.g., -lrt, isn't added to it.  Otherwise, *all*
+  # programs in the package would end up linked with that potentially-shared
+  # library, inducing unnecessary run-time overhead.
+  fetish_saved_libs=$LIBS
+    AC_SEARCH_LIBS(clock_gettime, [rt posix4],
+                   [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
+    AC_SUBST(LIB_CLOCK_GETTIME)
+    AC_CHECK_FUNCS(clock_gettime clock_settime)
+  LIBS=$fetish_saved_libs
+])
diff --git a/m4/closeout.m4 b/m4/closeout.m4
new file mode 100644
index 000000000..a06fd6da2
--- /dev/null
+++ b/m4/closeout.m4
@@ -0,0 +1,13 @@
+# closeout.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_CLOSEOUT],
+[
+  dnl Prerequisites of lib/closeout.c.
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+])
diff --git a/m4/dirname.m4 b/m4/dirname.m4
new file mode 100644
index 000000000..8b04bcabd
--- /dev/null
+++ b/m4/dirname.m4
@@ -0,0 +1,25 @@
+# dirname.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_DIRNAME],
+[
+  dnl Prerequisites of lib/dirname.h.
+  AC_REQUIRE([jm_AC_DOS])
+
+  dnl Prerequisites of lib/dirname.c.
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(string.h)
+
+  dnl Prerequisites of lib/basename.c.
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(string.h)
+
+  dnl Prerequisites of lib/stripslash.c.
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/dup2.m4 b/m4/dup2.m4
new file mode 100644
index 000000000..727366946
--- /dev/null
+++ b/m4/dup2.m4
@@ -0,0 +1,21 @@
+# dup2.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_DUP2],
+[
+  AC_REPLACE_FUNCS(dup2)
+  if test $ac_cv_func_dup2 = no; then
+    gl_PREREQ_DUP2
+  fi
+])
+
+# Prerequisites of lib/dup2.c.
+AC_DEFUN([gl_PREREQ_DUP2], [
+  AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)
+])
+
diff --git a/m4/euidaccess.m4 b/m4/euidaccess.m4
new file mode 100644
index 000000000..18ce475b1
--- /dev/null
+++ b/m4/euidaccess.m4
@@ -0,0 +1,26 @@
+# euidaccess.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_EUIDACCESS],
+[
+  dnl Persuade glibc <unistd.h> to declare euidaccess().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_CHECK_DECLS([euidaccess])
+  AC_REPLACE_FUNCS(euidaccess)
+  if test $ac_cv_func_euidaccess = no; then
+    gl_PREREQ_EUIDACCESS
+  fi
+])
+
+# Prerequisites of lib/euidaccess.c.
+AC_DEFUN([gl_PREREQ_EUIDACCESS], [
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_REQUIRE([AC_FUNC_GETGROUPS])
+])
+
diff --git a/m4/exclude.m4 b/m4/exclude.m4
new file mode 100644
index 000000000..88d2874fa
--- /dev/null
+++ b/m4/exclude.m4
@@ -0,0 +1,16 @@
+# exclude.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_EXCLUDE],
+[
+  dnl Prerequisites of lib/exclude.c.
+  AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(stdlib.h string.h strings.h)
+  AC_CHECK_FUNCS_ONCE(isascii)
+])
diff --git a/m4/exitfail.m4 b/m4/exitfail.m4
new file mode 100644
index 000000000..3551c4167
--- /dev/null
+++ b/m4/exitfail.m4
@@ -0,0 +1,13 @@
+# exitfail.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_EXITFAIL],
+[
+  dnl Prerequisites of lib/exitfail.c.
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+])
diff --git a/m4/file-type.m4 b/m4/file-type.m4
new file mode 100644
index 000000000..34a94408c
--- /dev/null
+++ b/m4/file-type.m4
@@ -0,0 +1,13 @@
+# file-type.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FILE_TYPE],
+[
+  dnl Prerequisites of lib/file-type.h.
+  AC_REQUIRE([AC_HEADER_STAT])
+])
diff --git a/m4/fileblocks.m4 b/m4/fileblocks.m4
new file mode 100644
index 000000000..07e2b70eb
--- /dev/null
+++ b/m4/fileblocks.m4
@@ -0,0 +1,21 @@
+# fileblocks.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FILEBLOCKS],
+[
+  AC_STRUCT_ST_BLOCKS
+  dnl Note: AC_STRUCT_ST_BLOCKS does AC_LIBOBJ(fileblocks).
+  if test $ac_cv_member_struct_stat_st_blocks = no; then
+    gl_PREREQ_FILEBLOCKS
+  fi
+])
+
+# Prerequisites of lib/fileblocks.c.
+AC_DEFUN([gl_PREREQ_FILEBLOCKS], [
+  AC_CHECK_HEADERS_ONCE(sys/param.h unistd.h)
+])
diff --git a/m4/filemode.m4 b/m4/filemode.m4
new file mode 100644
index 000000000..cc08698aa
--- /dev/null
+++ b/m4/filemode.m4
@@ -0,0 +1,13 @@
+# filemode.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FILEMODE],
+[
+  dnl Prerequisites of lib/filemode.c.
+  AC_REQUIRE([AC_HEADER_STAT])
+])
diff --git a/m4/getdate.m4 b/m4/getdate.m4
new file mode 100644
index 000000000..e3c517b39
--- /dev/null
+++ b/m4/getdate.m4
@@ -0,0 +1,23 @@
+# getdate.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_GETDATE],
+[
+  dnl Prerequisites of lib/getdate.h.
+  AC_HEADER_TIME
+  AC_CHECK_HEADERS_ONCE(sys/time.h)
+
+  dnl Prerequisites of lib/getdate.y.
+  AC_REQUIRE([jm_BISON])
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(stdlib.h string.h)
+  AC_CHECK_FUNCS_ONCE(isascii)
+  AC_STRUCT_TIMEZONE
+  AC_REQUIRE([gl_TM_GMTOFF])
+])
diff --git a/m4/gethostname.m4 b/m4/gethostname.m4
new file mode 100644
index 000000000..f9da4b197
--- /dev/null
+++ b/m4/gethostname.m4
@@ -0,0 +1,21 @@
+# gethostname.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_GETHOSTNAME],
+[
+  AC_REPLACE_FUNCS(gethostname)
+  if test $ac_cv_func_gethostname = no; then
+    gl_PREREQ_GETHOSTNAME
+  fi
+])
+
+# Prerequisites of lib/gethostname.c.
+AC_DEFUN([gl_PREREQ_GETHOSTNAME], [
+  AC_CHECK_FUNCS(uname)
+])
+
diff --git a/m4/getloadavg.m4 b/m4/getloadavg.m4
new file mode 100644
index 000000000..08ec0149b
--- /dev/null
+++ b/m4/getloadavg.m4
@@ -0,0 +1,125 @@
+#serial 10
+
+# A replacement for autoconf's macro by the same name.  This version
+# accepts an optional argument specifying the name of the $srcdir-relative
+# directory in which the file getloadavg.c may be found.  It is unusual
+# (but justified, imho) that this file is required at ./configure time.
+
+undefine([AC_FUNC_GETLOADAVG])
+
+# AC_FUNC_GETLOADAVG
+# ------------------
+AC_DEFUN([AC_FUNC_GETLOADAVG],
+[ac_have_func=no # yes means we've found a way to get the load average.
+
+AC_CHECK_HEADERS_ONCE(fcntl.h locale.h unistd.h)
+AC_CHECK_HEADERS(mach/mach.h)
+AC_CHECK_FUNCS(setlocale)
+
+# By default, expect to find getloadavg.c in $srcdir/.
+ac_lib_dir_getloadavg=$srcdir
+# But if there's an argument, DIR, expect to find getloadavg.c in $srcdir/DIR.
+m4_ifval([$1], [ac_lib_dir_getloadavg=$srcdir/$1])
+# Make sure getloadavg.c is where it belongs, at ./configure-time.
+test -f $ac_lib_dir_getloadavg/getloadavg.c \
+  || AC_MSG_ERROR([getloadavg.c is not in $ac_lib_dir_getloadavg])
+# FIXME: Add an autoconf-time test, too?
+
+ac_save_LIBS=$LIBS
+
+# Check for getloadavg, but be sure not to touch the cache variable.
+(AC_CHECK_FUNC(getloadavg, exit 0, exit 1)) && ac_have_func=yes
+
+# On HPUX9, an unprivileged user can get load averages through this function.
+AC_CHECK_FUNCS(pstat_getdynamic)
+
+# Solaris has libkstat which does not require root.
+AC_CHECK_LIB(kstat, kstat_open)
+test $ac_cv_lib_kstat_kstat_open = yes && ac_have_func=yes
+
+# Some systems with -lutil have (and need) -lkvm as well, some do not.
+# On Solaris, -lkvm requires nlist from -lelf, so check that first
+# to get the right answer into the cache.
+# For kstat on solaris, we need libelf to force the definition of SVR4 below.
+if test $ac_have_func = no; then
+  AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
+fi
+if test $ac_have_func = no; then
+  AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
+  # Check for the 4.4BSD definition of getloadavg.
+  AC_CHECK_LIB(util, getloadavg,
+    [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
+fi
+
+if test $ac_have_func = no; then
+  # There is a commonly available library for RS/6000 AIX.
+  # Since it is not a standard part of AIX, it might be installed locally.
+  ac_getloadavg_LIBS=$LIBS
+  LIBS="-L/usr/local/lib $LIBS"
+  AC_CHECK_LIB(getloadavg, getloadavg,
+               [LIBS="-lgetloadavg $LIBS"], [LIBS=$ac_getloadavg_LIBS])
+fi
+
+# Make sure it is really in the library, if we think we found it,
+# otherwise set up the replacement function.
+AC_CHECK_FUNCS(getloadavg, [],
+               [_AC_LIBOBJ_GETLOADAVG])
+
+# Some definitions of getloadavg require that the program be installed setgid.
+AC_CACHE_CHECK(whether getloadavg requires setgid,
+               ac_cv_func_getloadavg_setgid,
+[AC_EGREP_CPP([Yowza Am I SETGID yet],
+[#include "$ac_lib_dir_getloadavg/getloadavg.c"
+#ifdef LDAV_PRIVILEGED
+Yowza Am I SETGID yet
+@%:@endif],
+              ac_cv_func_getloadavg_setgid=yes,
+              ac_cv_func_getloadavg_setgid=no)])
+if test $ac_cv_func_getloadavg_setgid = yes; then
+  NEED_SETGID=true
+  AC_DEFINE(GETLOADAVG_PRIVILEGED, 1,
+            [Define if the `getloadavg' function needs to be run setuid
+             or setgid.])
+else
+  NEED_SETGID=false
+fi
+AC_SUBST(NEED_SETGID)dnl
+
+if test $ac_cv_func_getloadavg_setgid = yes; then
+  AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
+[ # On Solaris, /dev/kmem is a symlink.  Get info on the real file.
+  ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
+  # If we got an error (system does not support symlinks), try without -L.
+  test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
+  ac_cv_group_kmem=`echo $ac_ls_output \
+    | sed -ne ['s/[ 	][ 	]*/ /g;
+	       s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\)  *.*/\1/;
+	       / /s/.* //;p;']`
+])
+  AC_SUBST(KMEM_GROUP, $ac_cv_group_kmem)dnl
+fi
+if test "x$ac_save_LIBS" = x; then
+  GETLOADAVG_LIBS=$LIBS
+else
+  GETLOADAVG_LIBS=`echo "$LIBS" | sed "s!$ac_save_LIBS!!"`
+fi
+LIBS=$ac_save_LIBS
+
+AC_SUBST(GETLOADAVG_LIBS)dnl
+])# AC_FUNC_GETLOADAVG
+
+
+AC_DEFUN([gl_FUNC_GETLOADAVG],
+[
+  AC_FUNC_GETLOADAVG([lib])
+  dnl Note AC_FUNC_GETLOADAVG does AC_LIBOBJ(getloadavg).
+  if test $ac_cv_func_getloadavg = no; then
+    gl_PREREQ_GETLOADAVG
+  fi
+])
+
+# Prerequisites of lib/getloadavg.c not done by autoconf's AC_FUNC_GETLOADAVG.
+AC_DEFUN([gl_PREREQ_GETLOADAVG],
+[
+  AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)
+])
diff --git a/m4/getopt.m4 b/m4/getopt.m4
new file mode 100644
index 000000000..558558de4
--- /dev/null
+++ b/m4/getopt.m4
@@ -0,0 +1,13 @@
+# getopt.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_GETOPT],
+[
+  dnl Prerequisites of lib/getopt.c.
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/getpagesize.m4 b/m4/getpagesize.m4
new file mode 100644
index 000000000..f1f4c42d4
--- /dev/null
+++ b/m4/getpagesize.m4
@@ -0,0 +1,15 @@
+# getpagesize.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_GETPAGESIZE],
+[
+  dnl Prerequisites of lib/getpagesize.h.
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_CHECK_HEADERS(OS.h)
+  AC_CHECK_FUNCS(getpagesize)
+])
diff --git a/m4/getpass.m4 b/m4/getpass.m4
new file mode 100644
index 000000000..0a7b81742
--- /dev/null
+++ b/m4/getpass.m4
@@ -0,0 +1,36 @@
+# getpass.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Provide a getpass() function if the system doesn't have it.
+AC_DEFUN([gl_FUNC_GETPASS],
+[
+  AC_REPLACE_FUNCS(getpass)
+  if test $ac_cv_func_getpass = no; then
+    gl_PREREQ_GETPASS
+  fi
+])
+
+# Provide the GNU getpass() implementation. It supports passwords of
+# arbitrary length (not just 8 bytes as on HP-UX).
+AC_DEFUN([gl_FUNC_GETPASS_GNU],
+[
+  dnl TODO: Detect when GNU getpass() is already found in glibc.
+  AC_LIBOBJ(getpass)
+  gl_PREREQ_GETPASS
+  dnl We must choose a different name for our function, since on ELF systems
+  dnl an unusable getpass() in libc.so would override our getpass() if it is
+  dnl compiled into a shared library.
+  AC_DEFINE([getpass], [gnu_getpass],
+    [Define to a replacement function name for getpass().])
+])
+
+# Prerequisites of lib/getpass.c.
+AC_DEFUN([gl_PREREQ_GETPASS], [
+  :
+])
+
diff --git a/m4/gettextext.m4 b/m4/gettextext.m4
new file mode 100644
index 000000000..9f08fcd64
--- /dev/null
+++ b/m4/gettextext.m4
@@ -0,0 +1,30 @@
+# Assume AM_GNU_GETTEXT([external]) and Autoconf 2.54 or later, for coreutils.
+
+# serial 1
+
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert
+
+dnl Automake doesn't understand that AM_GNU_GETTEXT([external])
+dnl never invokes the following macros, because of the [external].
+dnl Insert empty macros to pacify Automake.
+
+AC_DEFUN([AM_LC_MESSAGES])
+AC_DEFUN([AM_MKINSTALLDIRS])
+AC_DEFUN([AM_NLS])
+AC_DEFUN([AM_PO_SUBDIRS])
+AC_DEFUN([gt_INTDIV0])
+
+dnl A simpler substitute for gt_INTTYPES_PRI that assumes Autoconf 2.54
+dnl or later.
+
+AC_DEFUN([gt_HEADER_INTTYPES_H], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  gt_cv_header_inttypes_h=$ac_cv_header_inttypes_h
+])
diff --git a/m4/getusershell.m4 b/m4/getusershell.m4
new file mode 100644
index 000000000..642124bd4
--- /dev/null
+++ b/m4/getusershell.m4
@@ -0,0 +1,23 @@
+# getusershell.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_GETUSERSHELL],
+[
+  AC_REPLACE_FUNCS(getusershell)
+  if test $ac_cv_func_getusershell = no; then
+    gl_PREREQ_GETUSERSHELL
+  fi
+])
+
+# Prerequisites of lib/getusershell.c.
+AC_DEFUN([gl_PREREQ_GETUSERSHELL], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+  AC_CHECK_FUNCS_ONCE(isascii)
+])
+
diff --git a/m4/hard-locale.m4 b/m4/hard-locale.m4
new file mode 100644
index 000000000..79f24d28d
--- /dev/null
+++ b/m4/hard-locale.m4
@@ -0,0 +1,14 @@
+# hard-locale.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_HARD_LOCALE],
+[
+  dnl Prerequisites of lib/hard-locale.c.
+  AC_CHECK_HEADERS_ONCE(locale.h stdlib.h string.h)
+  AC_CHECK_FUNCS_ONCE(setlocale)
+])
diff --git a/m4/hash.m4 b/m4/hash.m4
new file mode 100644
index 000000000..ab48a1d23
--- /dev/null
+++ b/m4/hash.m4
@@ -0,0 +1,15 @@
+# hash.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_HASH],
+[
+  dnl Prerequisites of lib/hash.c.
+  AC_REQUIRE([AM_STDBOOL_H])
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+  AC_CHECK_DECLS_ONCE(free malloc)
+])
diff --git a/m4/malloc.m4 b/m4/malloc.m4
new file mode 100644
index 000000000..2452acf0b
--- /dev/null
+++ b/m4/malloc.m4
@@ -0,0 +1,25 @@
+# malloc.m4 serial 7
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Jim Meyering.
+dnl Determine whether malloc accepts 0 as its argument.
+dnl If it doesn't, arrange to use the replacement function.
+
+AC_DEFUN([jm_FUNC_MALLOC],
+[
+  AC_REQUIRE([AC_FUNC_MALLOC])
+  dnl autoconf < 2.57 used the symbol ac_cv_func_malloc_works.
+  if test X"$ac_cv_func_malloc_0_nonnull" = Xno || test X"$ac_cv_func_malloc_works" = Xno; then
+    gl_PREREQ_MALLOC
+  fi
+])
+
+# Prerequisites of lib/malloc.c.
+AC_DEFUN([gl_PREREQ_MALLOC], [
+  :
+])
diff --git a/m4/memchr.m4 b/m4/memchr.m4
new file mode 100644
index 000000000..7b6cfc43d
--- /dev/null
+++ b/m4/memchr.m4
@@ -0,0 +1,21 @@
+# memchr.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_MEMCHR],
+[
+  AC_REPLACE_FUNCS(memchr)
+  if test $ac_cv_func_memchr = no; then
+    jm_PREREQ_MEMCHR
+  fi
+])
+
+# Prerequisites of lib/memchr.c.
+AC_DEFUN([jm_PREREQ_MEMCHR], [
+  AC_CHECK_HEADERS_ONCE(limits.h stdlib.h)
+  AC_CHECK_HEADERS(bp-sym.h)
+])
diff --git a/m4/memcpy.m4 b/m4/memcpy.m4
new file mode 100644
index 000000000..db94905fa
--- /dev/null
+++ b/m4/memcpy.m4
@@ -0,0 +1,20 @@
+# memcpy.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_MEMCPY],
+[
+  AC_REPLACE_FUNCS(memcpy)
+  if test $ac_cv_func_memcpy = no; then
+    gl_PREREQ_MEMCPY
+  fi
+])
+
+# Prerequisites of lib/memcpy.c.
+AC_DEFUN([gl_PREREQ_MEMCPY], [
+  :
+])
diff --git a/m4/memmove.m4 b/m4/memmove.m4
new file mode 100644
index 000000000..6f9530aa9
--- /dev/null
+++ b/m4/memmove.m4
@@ -0,0 +1,20 @@
+# memmove.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_MEMMOVE],
+[
+  AC_REPLACE_FUNCS(memmove)
+  if test $ac_cv_func_memmove = no; then
+    gl_PREREQ_MEMMOVE
+  fi
+])
+
+# Prerequisites of lib/memmove.c.
+AC_DEFUN([gl_PREREQ_MEMMOVE], [
+  :
+])
diff --git a/m4/memrchr.m4 b/m4/memrchr.m4
new file mode 100644
index 000000000..c489ec3d3
--- /dev/null
+++ b/m4/memrchr.m4
@@ -0,0 +1,23 @@
+# memrchr.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_MEMRCHR],
+[
+  dnl Persuade glibc <string.h> to declare memrchr().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_REPLACE_FUNCS(memrchr)
+  if test $ac_cv_func_memrchr = no; then
+    gl_PREREQ_MEMRCHR
+  fi
+])
+
+# Prerequisites of lib/memrchr.c.
+AC_DEFUN([gl_PREREQ_MEMRCHR], [
+  AC_CHECK_HEADERS_ONCE(limits.h)
+])
diff --git a/m4/memset.m4 b/m4/memset.m4
new file mode 100644
index 000000000..138eada07
--- /dev/null
+++ b/m4/memset.m4
@@ -0,0 +1,20 @@
+# memset.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_MEMSET],
+[
+  AC_REPLACE_FUNCS(memset)
+  if test $ac_cv_func_memset = no; then
+    gl_PREREQ_MEMSET
+  fi
+])
+
+# Prerequisites of lib/memset.c.
+AC_DEFUN([gl_PREREQ_MEMSET], [
+  :
+])
diff --git a/m4/modechange.m4 b/m4/modechange.m4
new file mode 100644
index 000000000..d5403e91d
--- /dev/null
+++ b/m4/modechange.m4
@@ -0,0 +1,13 @@
+# modechange.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_MODECHANGE],
+[
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_REQUIRE([AC_HEADER_STAT])
+])
diff --git a/m4/mountlist.m4 b/m4/mountlist.m4
new file mode 100644
index 000000000..c2af19a91
--- /dev/null
+++ b/m4/mountlist.m4
@@ -0,0 +1,27 @@
+# mountlist.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_MOUNTLIST],
+[
+  jm_LIST_MOUNTED_FILESYSTEMS([gl_cv_list_mounted_fs=yes],
+                              [gl_cv_list_mounted_fs=no])
+  if test $gl_cv_list_mounted_fs = yes; then
+    AC_LIBOBJ(mountlist)
+    gl_PREREQ_MOUNTLIST_EXTRA
+  fi
+])
+
+# Prerequisites of lib/mountlist.c not done by jm_LIST_MOUNTED_FILESYSTEMS.
+AC_DEFUN([gl_PREREQ_MOUNTLIST_EXTRA],
+[
+  AC_REQUIRE([AC_HEADER_STDC])
+  dnl Note jm_LIST_MOUNTED_FILESYSTEMS checks for mntent.h, not sys/mntent.h.
+  AC_CHECK_HEADERS_ONCE(fcntl.h string.h unistd.h)
+  AC_CHECK_HEADERS(sys/mntent.h)
+  jm_FSTYPENAME
+])
diff --git a/m4/obstack.m4 b/m4/obstack.m4
new file mode 100644
index 000000000..cd962729e
--- /dev/null
+++ b/m4/obstack.m4
@@ -0,0 +1,24 @@
+# obstack.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_OBSTACK],
+[
+  dnl Prerequisites of lib/obstack.h.
+  AC_CHECK_HEADERS_ONCE(stddef.h string.h)
+
+  AC_FUNC_OBSTACK
+  dnl Note: AC_FUNC_OBSTACK does AC_LIBSOURCES([obstack.h, obstack.c]).
+  if test $ac_cv_func_obstack = no; then
+    gl_PREREQ_OBSTACK
+  fi
+])
+
+# Prerequisites of lib/obstack.c.
+AC_DEFUN([gl_PREREQ_OBSTACK], [
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+])
diff --git a/m4/path-concat.m4 b/m4/path-concat.m4
new file mode 100644
index 000000000..975774752
--- /dev/null
+++ b/m4/path-concat.m4
@@ -0,0 +1,17 @@
+# path-concat.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_PATH_CONCAT],
+[
+  dnl Prerequisites of lib/path-concat.c.
+  AC_REQUIRE([jm_AC_DOS])
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(memory.h stdlib.h string.h strings.h unistd.h)
+  AC_CHECK_FUNCS_ONCE(mempcpy)
+  AC_CHECK_DECLS_ONCE(malloc)
+])
diff --git a/m4/pathmax.m4 b/m4/pathmax.m4
new file mode 100644
index 000000000..95ab044d8
--- /dev/null
+++ b/m4/pathmax.m4
@@ -0,0 +1,13 @@
+# pathmax.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_PATHMAX],
+[
+  dnl Prerequisites of lib/pathmax.h.
+  AC_CHECK_HEADERS_ONCE(sys/param.h unistd.h)
+])
diff --git a/m4/physmem.m4 b/m4/physmem.m4
new file mode 100644
index 000000000..824db10fa
--- /dev/null
+++ b/m4/physmem.m4
@@ -0,0 +1,39 @@
+# physmem.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Check for the external symbol, _system_configuration,
+# a struct with member `physmem'.
+AC_DEFUN([gl_SYS__SYSTEM_CONFIGURATION],
+  [AC_CACHE_CHECK(for external symbol _system_configuration,
+		  gl_cv_var__system_configuration,
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM(
+		      [[#include <sys/systemcfg.h>
+		      ]],
+		      [double x = _system_configuration.physmem;])],
+      [gl_cv_var__system_configuration=yes],
+      [gl_cv_var__system_configuration=no])])
+
+    if test $gl_cv_var__system_configuration = yes; then
+      AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
+		[Define to 1 if you have the external variable,
+		_system_configuration with a member named physmem.])
+    fi
+  ]
+)
+
+AC_DEFUN([gl_PHYSMEM],
+[
+  # Prerequisites of lib/physmem.c.
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_CHECK_HEADERS([sys/pstat.h sys/sysmp.h sys/sysinfo.h \
+    machine/hal_sysinfo.h sys/table.h sys/param.h sys/sysctl.h \
+    sys/systemcfg.h],,, [AC_INCLUDES_DEFAULT])
+
+  AC_CHECK_FUNCS(pstat_getstatic pstat_getdynamic sysmp getsysinfo sysctl table)
+  AC_REQUIRE([gl_SYS__SYSTEM_CONFIGURATION])
+])
diff --git a/m4/posixtm.m4 b/m4/posixtm.m4
new file mode 100644
index 000000000..45635bc41
--- /dev/null
+++ b/m4/posixtm.m4
@@ -0,0 +1,14 @@
+# posixtm.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_POSIXTM],
+[
+  dnl Prerequisites of lib/posixtm.c.
+  AC_STRUCT_TM
+  AC_CHECK_HEADERS_ONCE(stdlib.h string.h)
+])
diff --git a/m4/posixver.m4 b/m4/posixver.m4
new file mode 100644
index 000000000..17eb7c14b
--- /dev/null
+++ b/m4/posixver.m4
@@ -0,0 +1,13 @@
+# posixver.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_POSIXVER],
+[
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_CHECK_DECLS_ONCE(getenv)
+])
diff --git a/m4/quote.m4 b/m4/quote.m4
new file mode 100644
index 000000000..14ce1b619
--- /dev/null
+++ b/m4/quote.m4
@@ -0,0 +1,13 @@
+# quote.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_QUOTE],
+[
+  dnl Prerequisites of lib/quote.c.
+  dnl (none)
+])
diff --git a/m4/quotearg.m4 b/m4/quotearg.m4
new file mode 100644
index 000000000..2fba109f1
--- /dev/null
+++ b/m4/quotearg.m4
@@ -0,0 +1,16 @@
+# quotearg.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_QUOTEARG],
+[
+  dnl Prerequisites of lib/quotearg.c.
+  AC_CHECK_HEADERS_ONCE(wchar.h wctype.h)
+  AC_CHECK_FUNCS_ONCE(iswprint mbsinit)
+  AC_TYPE_MBSTATE_T
+  jm_FUNC_MBRTOWC
+])
diff --git a/m4/readlink.m4 b/m4/readlink.m4
new file mode 100644
index 000000000..ec53e14db
--- /dev/null
+++ b/m4/readlink.m4
@@ -0,0 +1,22 @@
+# readlink.m4 serial 2
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_READLINK],
+[
+  AC_CHECK_FUNCS(readlink)
+  if test $ac_cv_func_readlink = no; then
+    AC_LIBOBJ(readlink)
+    gl_PREREQ_READLINK
+  fi
+])
+
+# Prerequisites of lib/readlink.c.
+AC_DEFUN([gl_PREREQ_READLINK],
+[
+  :
+])
diff --git a/m4/readutmp.m4 b/m4/readutmp.m4
new file mode 100644
index 000000000..d6732d577
--- /dev/null
+++ b/m4/readutmp.m4
@@ -0,0 +1,63 @@
+# readutmp.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_READUTMP],
+[
+  dnl Prerequisites of lib/readutmp.h.
+  AC_CHECK_HEADERS_ONCE(sys/param.h)
+  AC_CHECK_HEADERS(utmp.h utmpx.h)
+  AC_CHECK_FUNCS(utmpname utmpxname)
+  AC_CHECK_DECLS(getutent,,,[
+#ifdef HAVE_UTMP_H
+# include <utmp.h>
+#endif
+])
+  if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
+    utmp_includes="\
+$ac_includes_default
+#ifdef HAVE_UTMPX_H
+# include <utmpx.h>
+#endif
+#ifdef HAVE_UTMP_H
+# include <utmp.h>
+#endif
+"
+    AC_CHECK_MEMBERS([struct utmpx.ut_user],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_user],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_name],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_name],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_type],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_type],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_pid],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_pid],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_id],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_id],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_exit],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_exit],,,[$utmp_includes])
+
+    AC_CHECK_MEMBERS([struct utmpx.ut_exit.ut_exit],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_exit.ut_exit],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_exit.e_exit],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_exit.e_exit],,,[$utmp_includes])
+
+    AC_CHECK_MEMBERS([struct utmpx.ut_exit.ut_termination],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_exit.ut_termination],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmpx.ut_exit.e_termination],,,[$utmp_includes])
+    AC_CHECK_MEMBERS([struct utmp.ut_exit.e_termination],,,[$utmp_includes])
+
+    AC_LIBOBJ(readutmp)
+    gl_PREREQ_READUTMP
+  fi
+])
+
+# Prerequisites of lib/readutmp.c.
+AC_DEFUN([gl_PREREQ_READUTMP],
+[
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/realloc.m4 b/m4/realloc.m4
new file mode 100644
index 000000000..9f746f190
--- /dev/null
+++ b/m4/realloc.m4
@@ -0,0 +1,25 @@
+# realloc.m4 serial 7
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Jim Meyering.
+dnl Determine whether realloc works when both arguments are 0.
+dnl If it doesn't, arrange to use the replacement function.
+
+AC_DEFUN([jm_FUNC_REALLOC],
+[
+  AC_REQUIRE([AC_FUNC_REALLOC])
+  dnl autoconf < 2.57 used the symbol ac_cv_func_realloc_works.
+  if test X"$ac_cv_func_realloc_0_nonnull" = Xno || test X"$ac_cv_func_realloc_works" = Xno; then
+    gl_PREREQ_REALLOC
+  fi
+])
+
+# Prerequisites of lib/realloc.c.
+AC_DEFUN([gl_PREREQ_REALLOC], [
+  :
+])
diff --git a/m4/rmdir.m4 b/m4/rmdir.m4
new file mode 100644
index 000000000..a86ff782e
--- /dev/null
+++ b/m4/rmdir.m4
@@ -0,0 +1,22 @@
+# rmdir.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_RMDIR],
+[
+  AC_REPLACE_FUNCS(rmdir)
+  if test $ac_cv_func_rmdir = no; then
+    gl_PREREQ_RMDIR
+  fi
+])
+
+# Prerequisites of lib/rmdir.c.
+AC_DEFUN([gl_PREREQ_RMDIR], [
+  AC_REQUIRE([AC_HEADER_STAT])
+  :
+])
+
diff --git a/m4/rpmatch.m4 b/m4/rpmatch.m4
new file mode 100644
index 000000000..4cce297c3
--- /dev/null
+++ b/m4/rpmatch.m4
@@ -0,0 +1,22 @@
+# rpmatch.m4 serial 3
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_RPMATCH],
+[
+  AC_REPLACE_FUNCS(rpmatch)
+  if test $ac_cv_func_rpmatch = no; then
+    gl_PREREQ_RPMATCH
+  fi
+])
+
+# Prerequisites of lib/rpmatch.c.
+AC_DEFUN([gl_PREREQ_RPMATCH], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  :
+])
+
diff --git a/m4/safe-read.m4 b/m4/safe-read.m4
new file mode 100644
index 000000000..deb01bc96
--- /dev/null
+++ b/m4/safe-read.m4
@@ -0,0 +1,19 @@
+# safe-read.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_SAFE_READ],
+[
+  gl_PREREQ_SAFE_READ
+])
+
+# Prerequisites of lib/safe-read.c.
+AC_DEFUN([gl_PREREQ_SAFE_READ],
+[
+  AC_REQUIRE([gt_TYPE_SSIZE_T])
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+])
diff --git a/m4/safe-write.m4 b/m4/safe-write.m4
new file mode 100644
index 000000000..cf3292b2a
--- /dev/null
+++ b/m4/safe-write.m4
@@ -0,0 +1,18 @@
+# safe-write.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_SAFE_WRITE],
+[
+  gl_PREREQ_SAFE_WRITE
+])
+
+# Prerequisites of lib/safe-write.c.
+AC_DEFUN([gl_PREREQ_SAFE_WRITE],
+[
+  gl_PREREQ_SAFE_READ
+])
diff --git a/m4/same.m4 b/m4/same.m4
new file mode 100644
index 000000000..d15027b80
--- /dev/null
+++ b/m4/same.m4
@@ -0,0 +1,14 @@
+# same.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_SAME],
+[
+  dnl Prerequisites of lib/same.c.
+  AC_CHECK_HEADERS_ONCE(stdlib.h string.h unistd.h)
+  AC_CHECK_DECLS_ONCE(free)
+])
diff --git a/m4/save-cwd.m4 b/m4/save-cwd.m4
new file mode 100644
index 000000000..fcafca913
--- /dev/null
+++ b/m4/save-cwd.m4
@@ -0,0 +1,15 @@
+# save-cwd.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_SAVE_CWD],
+[
+  dnl Prerequisites for lib/save-cwd.c.
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)
+  AC_CHECK_FUNCS(fchdir)
+])
diff --git a/m4/savedir.m4 b/m4/savedir.m4
new file mode 100644
index 000000000..5bbead54d
--- /dev/null
+++ b/m4/savedir.m4
@@ -0,0 +1,15 @@
+# savedir.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_SAVEDIR],
+[
+  dnl Prerequisites of lib/savedir.c.
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_REQUIRE([AC_HEADER_DIRENT])
+  AC_REQUIRE([AC_FUNC_CLOSEDIR_VOID])
+])
diff --git a/m4/settime.m4 b/m4/settime.m4
new file mode 100644
index 000000000..3751af564
--- /dev/null
+++ b/m4/settime.m4
@@ -0,0 +1,14 @@
+# settime.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_SETTIME],
+[
+  dnl Prerequisites of lib/settime.c.
+  # Need clock_settime.
+  AC_REQUIRE([gl_CLOCK_TIME])
+])
diff --git a/m4/sha.m4 b/m4/sha.m4
new file mode 100644
index 000000000..c218fec2f
--- /dev/null
+++ b/m4/sha.m4
@@ -0,0 +1,14 @@
+# sha.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_SHA],
+[
+  dnl Prerequisites of lib/sha.c.
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_FUNCS_ONCE(memcpy)
+])
diff --git a/m4/sig2str.m4 b/m4/sig2str.m4
new file mode 100644
index 000000000..deef9c56f
--- /dev/null
+++ b/m4/sig2str.m4
@@ -0,0 +1,21 @@
+# sig2str.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_SIG2STR],
+[
+  AC_REPLACE_FUNCS(sig2str)
+  if test $ac_cv_func_sig2str = no; then
+    gl_PREREQ_SIG2STR
+  fi
+])
+
+# Prerequisites of lib/sig2str.c.
+AC_DEFUN([gl_PREREQ_SIG2STR], [
+  :
+])
+
diff --git a/m4/stdio-safer.m4 b/m4/stdio-safer.m4
new file mode 100644
index 000000000..716c3bcd1
--- /dev/null
+++ b/m4/stdio-safer.m4
@@ -0,0 +1,13 @@
+# stdio-safer.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_STDIO_SAFER],
+[
+  dnl Prerequisites of lib/fopen-safer.c.
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+])
diff --git a/m4/stpcpy.m4 b/m4/stpcpy.m4
new file mode 100644
index 000000000..b3282661b
--- /dev/null
+++ b/m4/stpcpy.m4
@@ -0,0 +1,24 @@
+# stpcpy.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STPCPY],
+[
+  dnl Persuade glibc <string.h> to declare stpcpy().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_REPLACE_FUNCS(stpcpy)
+  if test $ac_cv_func_stpcpy = no; then
+    gl_PREREQ_STPCPY
+  fi
+])
+
+# Prerequisites of lib/stpcpy.c.
+AC_DEFUN([gl_PREREQ_STPCPY], [
+  :
+])
+
diff --git a/m4/strcase.m4 b/m4/strcase.m4
new file mode 100644
index 000000000..3fd25d0ce
--- /dev/null
+++ b/m4/strcase.m4
@@ -0,0 +1,39 @@
+# strcase.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_STRCASE],
+[
+  gl_FUNC_STRCASECMP
+  gl_FUNC_STRNCASECMP
+])
+
+AC_DEFUN([gl_FUNC_STRCASECMP],
+[
+  AC_REPLACE_FUNCS(strcasecmp)
+  if test $ac_cv_func_strcasecmp = no; then
+    gl_PREREQ_STRCASECMP
+  fi
+])
+
+AC_DEFUN([gl_FUNC_STRNCASECMP],
+[
+  AC_REPLACE_FUNCS(strncasecmp)
+  if test $ac_cv_func_strncasecmp = no; then
+    gl_PREREQ_STRNCASECMP
+  fi
+])
+
+# Prerequisites of lib/strcasecmp.c.
+AC_DEFUN([gl_PREREQ_STRCASECMP], [
+  :
+])
+
+# Prerequisites of lib/strncasecmp.c.
+AC_DEFUN([gl_PREREQ_STRNCASECMP], [
+  :
+])
diff --git a/m4/strcspn.m4 b/m4/strcspn.m4
new file mode 100644
index 000000000..1fb5f14e6
--- /dev/null
+++ b/m4/strcspn.m4
@@ -0,0 +1,20 @@
+# strcspn.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRCSPN],
+[
+  AC_REPLACE_FUNCS(strcspn)
+  if test $ac_cv_func_strcspn = no; then
+    gl_PREREQ_STRCSPN
+  fi
+])
+
+# Prerequisites of lib/strcspn.c.
+AC_DEFUN([gl_PREREQ_STRCSPN], [
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/strdup.m4 b/m4/strdup.m4
new file mode 100644
index 000000000..08087063d
--- /dev/null
+++ b/m4/strdup.m4
@@ -0,0 +1,22 @@
+# strdup.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRDUP],
+[
+  AC_REPLACE_FUNCS(strdup)
+  if test $ac_cv_func_strdup = no; then
+    gl_PREREQ_STRDUP
+  fi
+])
+
+# Prerequisites of lib/strdup.c.
+AC_DEFUN([gl_PREREQ_STRDUP], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  :
+])
+
diff --git a/m4/strndup.m4 b/m4/strndup.m4
new file mode 100644
index 000000000..f2f5cfea6
--- /dev/null
+++ b/m4/strndup.m4
@@ -0,0 +1,25 @@
+# strndup.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRNDUP],
+[
+  dnl Persuade glibc <string.h> to declare strndup().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_REPLACE_FUNCS(strndup)
+  if test $ac_cv_func_strndup = no; then
+    gl_PREREQ_STRNDUP
+  fi
+])
+
+# Prerequisites of lib/strndup.c.
+AC_DEFUN([gl_PREREQ_STRNDUP], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_DECLS(strnlen)
+])
+
diff --git a/m4/strnlen.m4 b/m4/strnlen.m4
new file mode 100644
index 000000000..89cca67ea
--- /dev/null
+++ b/m4/strnlen.m4
@@ -0,0 +1,32 @@
+# strnlen.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRNLEN],
+[
+  dnl Persuade glibc <string.h> to declare strnlen().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_FUNC_STRNLEN
+  if test $ac_cv_func_strnlen_working = no; then
+    # This is necessary because automake-1.6.1 doens't understand
+    # that the above use of AC_FUNC_STRNLEN means we may have to use
+    # lib/strnlen.c.
+    #AC_LIBOBJ(strnlen)
+    AC_DEFINE(strnlen, rpl_strnlen,
+      [Define to rpl_strnlen if the replacement function should be used.])
+    gl_PREREQ_STRNLEN
+  fi
+])
+
+# Prerequisites of lib/strnlen.c.
+AC_DEFUN([gl_PREREQ_STRNLEN], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(memory.h string.h)
+  AC_CHECK_DECLS(memchr)
+])
+
diff --git a/m4/strpbrk.m4 b/m4/strpbrk.m4
new file mode 100644
index 000000000..1f5fa01b8
--- /dev/null
+++ b/m4/strpbrk.m4
@@ -0,0 +1,20 @@
+# strpbrk.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRPBRK],
+[
+  AC_REPLACE_FUNCS(strpbrk)
+  if test $ac_cv_func_strpbrk = no; then
+    gl_PREREQ_STRPBRK
+  fi
+])
+
+# Prerequisites of lib/strpbrk.c.
+AC_DEFUN([gl_PREREQ_STRPBRK], [
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/strstr.m4 b/m4/strstr.m4
new file mode 100644
index 000000000..25a1801e1
--- /dev/null
+++ b/m4/strstr.m4
@@ -0,0 +1,20 @@
+# strstr.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRSTR],
+[
+  AC_REPLACE_FUNCS(strstr)
+  if test $ac_cv_func_strstr = no; then
+    gl_PREREQ_STRSTR
+  fi
+])
+
+# Prerequisites of lib/strstr.c.
+AC_DEFUN([gl_PREREQ_STRSTR], [
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/strtod.m4 b/m4/strtod.m4
new file mode 100644
index 000000000..809a83fa8
--- /dev/null
+++ b/m4/strtod.m4
@@ -0,0 +1,25 @@
+# strtod.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOD],
+[
+  AC_REQUIRE([AC_FUNC_STRTOD])
+  if test $ac_cv_func_strtod = no; then
+    AC_DEFINE(strtod, rpl_strtod,
+      [Define to rpl_strtod if the replacement function should be used.])
+    gl_PREREQ_STRTOD
+  fi
+])
+
+# Prerequisites of lib/strtod.c.
+# The need for pow() is already handled by AC_FUNC_STRTOD.
+AC_DEFUN([gl_PREREQ_STRTOD], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS(float.h)
+  AC_CHECK_FUNCS_ONCE(isascii)
+])
diff --git a/m4/strtoimax.m4 b/m4/strtoimax.m4
new file mode 100644
index 000000000..7a338f2aa
--- /dev/null
+++ b/m4/strtoimax.m4
@@ -0,0 +1,39 @@
+# strtoimax.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOIMAX],
+[
+  dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
+  AC_REQUIRE([AC_PROG_CPP])
+  AC_REQUIRE([AC_PROG_EGREP])
+
+  AC_CACHE_CHECK([whether <inttypes.h> defines strtoimax as a macro],
+    jm_cv_func_strtoimax_macro,
+    [AC_EGREP_CPP([inttypes_h_defines_strtoimax], [#include <inttypes.h>
+#ifdef strtoimax
+ inttypes_h_defines_strtoimax
+#endif],
+       jm_cv_func_strtoimax_macro=yes,
+       jm_cv_func_strtoimax_macro=no)])
+
+  if test "$jm_cv_func_strtoimax_macro" != yes; then
+    AC_REPLACE_FUNCS(strtoimax)
+    if test $ac_cv_func_strtoimax = no; then
+      gl_PREREQ_STRTOIMAX
+    fi
+  fi
+])
+
+# Prerequisites of lib/strtoimax.c.
+AC_DEFUN([gl_PREREQ_STRTOIMAX], [
+  jm_AC_TYPE_INTMAX_T
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+  AC_CHECK_DECLS_ONCE(strtol)
+  AC_CHECK_DECLS(strtoll)
+  AC_REQUIRE([jm_AC_TYPE_LONG_LONG])
+])
diff --git a/m4/strtol.m4 b/m4/strtol.m4
new file mode 100644
index 000000000..59a74f655
--- /dev/null
+++ b/m4/strtol.m4
@@ -0,0 +1,22 @@
+# strtol.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOL],
+[
+  AC_REPLACE_FUNCS(strtol)
+  if test $ac_cv_func_strtol = no; then
+    gl_PREREQ_STRTOL
+  fi
+])
+
+# Prerequisites of lib/strtol.c.
+AC_DEFUN([gl_PREREQ_STRTOL], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(limits.h)
+  AC_CHECK_FUNCS_ONCE(isascii)
+])
diff --git a/m4/strtoll.m4 b/m4/strtoll.m4
new file mode 100644
index 000000000..73e7251e9
--- /dev/null
+++ b/m4/strtoll.m4
@@ -0,0 +1,26 @@
+# strtoll.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOLL],
+[
+  dnl We don't need (and can't compile) the replacement strtoll
+  dnl unless the type 'long long' exists.
+  AC_REQUIRE([jm_AC_TYPE_LONG_LONG])
+  if test "$ac_cv_type_long_long" = yes; then
+    AC_REPLACE_FUNCS(strtoll)
+    if test $ac_cv_func_strtoll = no; then
+      gl_PREREQ_STRTOLL
+    fi
+  fi
+])
+
+# Prerequisites of lib/strtoll.c.
+AC_DEFUN([gl_PREREQ_STRTOLL], [
+  :
+])
+
diff --git a/m4/strtoul.m4 b/m4/strtoul.m4
new file mode 100644
index 000000000..a76fef6d8
--- /dev/null
+++ b/m4/strtoul.m4
@@ -0,0 +1,20 @@
+# strtoul.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOUL],
+[
+  AC_REPLACE_FUNCS(strtoul)
+  if test $ac_cv_func_strtoul = no; then
+    gl_PREREQ_STRTOUL
+  fi
+])
+
+# Prerequisites of lib/strtoul.c.
+AC_DEFUN([gl_PREREQ_STRTOUL], [
+  gl_PREREQ_STRTOL
+])
diff --git a/m4/strtoull.m4 b/m4/strtoull.m4
new file mode 100644
index 000000000..68035c47f
--- /dev/null
+++ b/m4/strtoull.m4
@@ -0,0 +1,26 @@
+# strtoull.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOULL],
+[
+  dnl We don't need (and can't compile) the replacement strtoull
+  dnl unless the type 'unsigned long long' exists.
+  AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG])
+  if test "$ac_cv_type_unsigned_long_long" = yes; then
+    AC_REPLACE_FUNCS(strtoull)
+    if test $ac_cv_func_strtoull = no; then
+      gl_PREREQ_STRTOULL
+    fi
+  fi
+])
+
+# Prerequisites of lib/strtoull.c.
+AC_DEFUN([gl_PREREQ_STRTOULL], [
+  :
+])
+
diff --git a/m4/strtoumax.m4 b/m4/strtoumax.m4
new file mode 100644
index 000000000..5a2d569a7
--- /dev/null
+++ b/m4/strtoumax.m4
@@ -0,0 +1,39 @@
+# strtoumax.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRTOUMAX],
+[
+  dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
+  AC_REQUIRE([AC_PROG_CPP])
+  AC_REQUIRE([AC_PROG_EGREP])
+
+  AC_CACHE_CHECK([whether <inttypes.h> defines strtoumax as a macro],
+    jm_cv_func_strtoumax_macro,
+    [AC_EGREP_CPP([inttypes_h_defines_strtoumax], [#include <inttypes.h>
+#ifdef strtoumax
+ inttypes_h_defines_strtoumax
+#endif],
+       jm_cv_func_strtoumax_macro=yes,
+       jm_cv_func_strtoumax_macro=no)])
+
+  if test "$jm_cv_func_strtoumax_macro" != yes; then
+    AC_REPLACE_FUNCS(strtoumax)
+    if test $ac_cv_func_strtoumax = no; then
+      gl_PREREQ_STRTOUMAX
+    fi
+  fi
+])
+
+# Prerequisites of lib/strtoumax.c.
+AC_DEFUN([gl_PREREQ_STRTOUMAX], [
+  jm_AC_TYPE_UINTMAX_T
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+  AC_CHECK_DECLS_ONCE(strtoul)
+  AC_CHECK_DECLS(strtoull)
+  AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG])
+])
diff --git a/m4/strverscmp.m4 b/m4/strverscmp.m4
new file mode 100644
index 000000000..bb82336f5
--- /dev/null
+++ b/m4/strverscmp.m4
@@ -0,0 +1,24 @@
+# strverscmp.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_FUNC_STRVERSCMP],
+[
+  dnl Persuade glibc <string.h> to declare strverscmp().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_REPLACE_FUNCS(strverscmp)
+  if test $ac_cv_func_strverscmp = no; then
+    gl_PREREQ_STRVERSCMP
+  fi
+])
+
+# Prerequisites of lib/strverscmp.c.
+AC_DEFUN([gl_PREREQ_STRVERSCMP], [
+  :
+])
+
diff --git a/m4/ulonglong.m4 b/m4/ulonglong.m4
new file mode 100644
index 000000000..1da8b809e
--- /dev/null
+++ b/m4/ulonglong.m4
@@ -0,0 +1,25 @@
+# ulonglong.m4 serial 3
+dnl Copyright (C) 1999-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert.
+
+# Define HAVE_UNSIGNED_LONG_LONG if 'unsigned long long' works.
+
+AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG],
+[
+  AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long,
+  [AC_TRY_LINK([unsigned long long ull = 1ULL; int i = 63;],
+    [unsigned long long ullmax = (unsigned long long) -1;
+     return ull << i | ull >> i | ullmax / ull | ullmax % ull;],
+    ac_cv_type_unsigned_long_long=yes,
+    ac_cv_type_unsigned_long_long=no)])
+  if test $ac_cv_type_unsigned_long_long = yes; then
+    AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1,
+      [Define if you have the 'unsigned long long' type.])
+  fi
+])
diff --git a/m4/unicodeio.m4 b/m4/unicodeio.m4
new file mode 100644
index 000000000..8ff756c51
--- /dev/null
+++ b/m4/unicodeio.m4
@@ -0,0 +1,13 @@
+# unicodeio.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_UNICODEIO],
+[
+  dnl Prerequisites of lib/unicodeio.c.
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/unistd-safer.m4 b/m4/unistd-safer.m4
new file mode 100644
index 000000000..894fb7154
--- /dev/null
+++ b/m4/unistd-safer.m4
@@ -0,0 +1,17 @@
+# unistd-safer.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_UNISTD_SAFER],
+[
+  gl_PREREQ_DUP_SAFER
+])
+
+# Prerequisites of lib/dup-safer.c.
+AC_DEFUN([gl_PREREQ_DUP_SAFER], [
+  AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)
+])
diff --git a/m4/userspec.m4 b/m4/userspec.m4
new file mode 100644
index 000000000..862c87170
--- /dev/null
+++ b/m4/userspec.m4
@@ -0,0 +1,15 @@
+# userspec.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_USERSPEC],
+[
+  dnl Prerequisites of lib/userspec.c.
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  AC_CHECK_HEADERS_ONCE(string.h sys/param.h unistd.h)
+])
diff --git a/m4/xalloc.m4 b/m4/xalloc.m4
new file mode 100644
index 000000000..1826bdcc7
--- /dev/null
+++ b/m4/xalloc.m4
@@ -0,0 +1,26 @@
+# xalloc.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_XALLOC],
+[
+  gl_PREREQ_XMALLOC
+  gl_PREREQ_XSTRDUP
+])
+
+# Prerequisites of lib/xmalloc.c.
+AC_DEFUN([gl_PREREQ_XMALLOC], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_REQUIRE([jm_FUNC_MALLOC])
+  AC_REQUIRE([jm_FUNC_REALLOC])
+])
+
+# Prerequisites of lib/xstrdup.c.
+AC_DEFUN([gl_PREREQ_XSTRDUP], [
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(string.h)
+])
diff --git a/m4/xgetcwd.m4 b/m4/xgetcwd.m4
new file mode 100644
index 000000000..efd30af3f
--- /dev/null
+++ b/m4/xgetcwd.m4
@@ -0,0 +1,15 @@
+# xgetcwd.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_XGETCWD],
+[
+  dnl Prerequisites of lib/xgetcwd.c.
+  AC_CHECK_HEADERS_ONCE(stdlib.h unistd.h)
+  AC_CHECK_FUNCS(getcwd)
+  AC_FUNC_GETCWD_NULL
+])
diff --git a/m4/xreadlink.m4 b/m4/xreadlink.m4
new file mode 100644
index 000000000..7062fd198
--- /dev/null
+++ b/m4/xreadlink.m4
@@ -0,0 +1,14 @@
+# xreadlink.m4 serial 3
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_XREADLINK],
+[
+  dnl Prerequisites of lib/xreadlink.c.
+  AC_REQUIRE([gt_TYPE_SSIZE_T])
+  AC_CHECK_HEADERS_ONCE(stdlib.h unistd.h)
+])
diff --git a/m4/xstrtod.m4 b/m4/xstrtod.m4
new file mode 100644
index 000000000..4056d8cf0
--- /dev/null
+++ b/m4/xstrtod.m4
@@ -0,0 +1,13 @@
+# xstrtod.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Prerequisites of lib/xstrtod.c.
+AC_DEFUN([gl_XSTRTOD],
+[
+  AC_REQUIRE([AC_HEADER_STDC])
+])
diff --git a/m4/xstrtol.m4 b/m4/xstrtol.m4
new file mode 100644
index 000000000..86d14b68c
--- /dev/null
+++ b/m4/xstrtol.m4
@@ -0,0 +1,37 @@
+# xstrtol.m4 serial 2
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_XSTRTOL],
+[
+  AC_REQUIRE([gl_PREREQ_XSTRTOL])
+  AC_REQUIRE([gl_PREREQ_XSTRTOUL])
+])
+
+# Prerequisites of lib/xstrtol.h.
+AC_DEFUN([gl_PREREQ_XSTRTOL_H],
+[
+  AC_REQUIRE([jm_AC_TYPE_INTMAX_T])
+  AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])
+])
+
+# Prerequisites of lib/xstrtol.c.
+AC_DEFUN([gl_PREREQ_XSTRTOL],
+[
+  AC_REQUIRE([gl_PREREQ_XSTRTOL_H])
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_HEADERS_ONCE(string.h)
+  AC_CHECK_FUNCS_ONCE(isascii)
+  AC_CHECK_DECLS_ONCE(strtol strtoul)
+  AC_CHECK_DECLS([strtoimax, strtoumax])
+])
+
+# Prerequisites of lib/xstrtoul.c.
+AC_DEFUN([gl_PREREQ_XSTRTOUL],
+[
+  AC_REQUIRE([gl_PREREQ_XSTRTOL])
+])
diff --git a/m4/yesno.m4 b/m4/yesno.m4
new file mode 100644
index 000000000..fae5f023d
--- /dev/null
+++ b/m4/yesno.m4
@@ -0,0 +1,13 @@
+# yesno.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_YESNO],
+[
+  dnl Prerequisites of lib/yesno.c.
+  AC_CHECK_HEADERS_ONCE(stdlib.h)
+])