Update from Gnulib by running admin/merge-gnulib.

33 files changed, 108 insertions, 89 deletions

diff --git a/m4/alloca.m4 b/m4/alloca.m4
index 4a0d09f8156..ba2f679d8e0 100644
--- a/m4/alloca.m4
+++ b/m4/alloca.m4
@@ -1,6 +1,6 @@
 # alloca.m4 serial 20
-dnl Copyright (C) 2002-2004, 2006-2007, 2009-2021 Free Software
-dnl Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2006-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/canonicalize.m4 b/m4/canonicalize.m4
index 647a651e04a..475fa15d6bd 100644
--- a/m4/canonicalize.m4
+++ b/m4/canonicalize.m4
@@ -1,4 +1,4 @@
-# canonicalize.m4 serial 34
+# canonicalize.m4 serial 35
 
 dnl Copyright (C) 2003-2007, 2009-2021 Free Software Foundation, Inc.
 
@@ -11,7 +11,6 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_CANONICALIZE_FILENAME_MODE],
 [
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
-  AC_REQUIRE([gl_FUNC_FACCESSAT_EOVERFLOW])
   AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
   AC_CHECK_FUNCS_ONCE([canonicalize_file_name faccessat])
   AC_REQUIRE([gl_DOUBLE_SLASH_ROOT])
@@ -58,7 +57,6 @@ AC_DEFUN([gl_CANONICALIZE_LGPL],
 AC_DEFUN([gl_CANONICALIZE_LGPL_SEPARATE],
 [
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
-  AC_REQUIRE([gl_FUNC_FACCESSAT_EOVERFLOW])
   AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
   AC_CHECK_FUNCS_ONCE([canonicalize_file_name faccessat])
 
diff --git a/m4/d-type.m4 b/m4/d-type.m4
index fa4ddeb4b62..534a59e3e5b 100644
--- a/m4/d-type.m4
+++ b/m4/d-type.m4
@@ -5,8 +5,7 @@ dnl
 dnl Check whether struct dirent has a member named d_type.
 dnl
 
-# Copyright (C) 1997, 1999-2004, 2006, 2009-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 1997, 1999-2004, 2006, 2009-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/dup2.m4 b/m4/dup2.m4
index 7d66aab0ee7..0753a32491e 100644
--- a/m4/dup2.m4
+++ b/m4/dup2.m4
@@ -1,6 +1,5 @@
 #serial 27
-dnl Copyright (C) 2002, 2005, 2007, 2009-2021 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2002, 2005, 2007, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/faccessat.m4 b/m4/faccessat.m4
index 56d1d3e045f..9d6b3635117 100644
--- a/m4/faccessat.m4
+++ b/m4/faccessat.m4
@@ -1,4 +1,4 @@
-# serial 9
+# serial 10
 # See if we need to provide faccessat replacement.
 
 dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
@@ -8,31 +8,6 @@ dnl with or without modifications, as long as this notice is preserved.
 
 # Written by Eric Blake.
 
-AC_DEFUN([gl_FUNC_FACCESSAT_EOVERFLOW],
-[
-  AC_CHECK_FUNCS_ONCE([faccessat])
-  if test "$ac_cv_func_faccessat" = yes; then
-    AC_CACHE_CHECK([whether faccessat works when stat would EOVERFLOW],
-      [gl_cv_func_faccessat_never_eoverflows],
-      [AC_COMPILE_IFELSE(
-         [AC_LANG_PROGRAM([],
-            [[#ifdef __linux__
-               #include <linux/version.h>
-               #if (! (KERNEL_VERSION (5, 8, 0) <= LINUX_VERSION_CODE \
-                    && 2 < (__GLIBC__ + (33 <= __GLIBC_MINOR__))))
-                #error "faccessat might fail with EOVERFLOW"
-               #endif
-              #endif
-            ]])],
-         [gl_cv_func_faccessat_never_eoverflows=yes],
-         [gl_cv_func_faccessat_never_eoverflows=no])])
-    if test "$gl_cv_func_faccessat_never_eoverflows" = yes; then
-      AC_DEFINE([FACCESSAT_NEVER_EOVERFLOWS], 1,
-        [Define to 1 if faccessat is EOVERFLOW-free.])
-    fi
-  fi
-])
-
 AC_DEFUN([gl_FUNC_FACCESSAT],
 [
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
@@ -41,14 +16,12 @@ AC_DEFUN([gl_FUNC_FACCESSAT],
   dnl Persuade glibc <unistd.h> to declare faccessat().
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
-  AC_REQUIRE([gl_FUNC_FACCESSAT_EOVERFLOW])
-
   AC_CHECK_FUNCS_ONCE([faccessat])
   if test $ac_cv_func_faccessat = no; then
     HAVE_FACCESSAT=0
   else
-    case $gl_cv_func_lstat_dereferences_slashed_symlink,$gl_cv_func_faccessat_never_eoverflows in
-      *yes,*yes) ;;
+    case $gl_cv_func_lstat_dereferences_slashed_symlink in
+      *yes) ;;
       *)    REPLACE_FACCESSAT=1 ;;
     esac
   fi
diff --git a/m4/fcntl_h.m4 b/m4/fcntl_h.m4
index 8febb5cbfdf..e63a82f10a2 100644
--- a/m4/fcntl_h.m4
+++ b/m4/fcntl_h.m4
@@ -1,4 +1,4 @@
-# serial 16
+# serial 17
 # Configure fcntl.h.
 dnl Copyright (C) 2006-2007, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
@@ -42,6 +42,9 @@ AC_DEFUN([gl_FCNTL_H_DEFAULTS],
   GNULIB_NONBLOCKING=0;  AC_SUBST([GNULIB_NONBLOCKING])
   GNULIB_OPEN=0;         AC_SUBST([GNULIB_OPEN])
   GNULIB_OPENAT=0;       AC_SUBST([GNULIB_OPENAT])
+  dnl Support Microsoft deprecated alias function names by default.
+  GNULIB_MDA_CREAT=1;    AC_SUBST([GNULIB_MDA_CREAT])
+  GNULIB_MDA_OPEN=1;     AC_SUBST([GNULIB_MDA_OPEN])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_FCNTL=1;          AC_SUBST([HAVE_FCNTL])
   HAVE_OPENAT=1;         AC_SUBST([HAVE_OPENAT])
diff --git a/m4/filemode.m4 b/m4/filemode.m4
index 190a5d1948e..4dc24efbd3c 100644
--- a/m4/filemode.m4
+++ b/m4/filemode.m4
@@ -1,6 +1,5 @@
 # filemode.m4 serial 9
-dnl Copyright (C) 2002, 2005-2006, 2009-2021 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fsusage.m4 b/m4/fsusage.m4
index 40e7ba528a8..d005579f9e0 100644
--- a/m4/fsusage.m4
+++ b/m4/fsusage.m4
@@ -1,8 +1,7 @@
 # serial 35
 # Obtaining file system usage information.
 
-# Copyright (C) 1997-1998, 2000-2001, 2003-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 1997-1998, 2000-2001, 2003-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/getgroups.m4 b/m4/getgroups.m4
index 0a6eb9f384f..bd746cdf88f 100644
--- a/m4/getgroups.m4
+++ b/m4/getgroups.m4
@@ -3,8 +3,7 @@
 dnl From Jim Meyering.
 dnl A wrapper around AC_FUNC_GETGROUPS.
 
-# Copyright (C) 1996-1997, 1999-2004, 2008-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 1996-1997, 1999-2004, 2008-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/getloadavg.m4 b/m4/getloadavg.m4
index 8713e322dab..bba22169497 100644
--- a/m4/getloadavg.m4
+++ b/m4/getloadavg.m4
@@ -1,7 +1,7 @@
 # Check for getloadavg.
 
-# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2021 Free
-# Software Foundation, Inc.
+# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2021 Free Software
+# Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/gettime.m4 b/m4/gettime.m4
index ddc72fa3537..de7c33046c2 100644
--- a/m4/gettime.m4
+++ b/m4/gettime.m4
@@ -1,6 +1,5 @@
 # gettime.m4 serial 9
-dnl Copyright (C) 2002, 2004-2006, 2009-2021 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2002, 2004-2006, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gettimeofday.m4 b/m4/gettimeofday.m4
index 9cbf88e2e28..3c200815740 100644
--- a/m4/gettimeofday.m4
+++ b/m4/gettimeofday.m4
@@ -1,7 +1,6 @@
 # serial 28
 
-# Copyright (C) 2001-2003, 2005, 2007, 2009-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 2001-2003, 2005, 2007, 2009-2021 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.
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index c0efba76a23..ad109520dd1 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -1077,6 +1077,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/limits.in.h
   lib/lstat.c
   lib/malloc/scratch_buffer.h
+  lib/malloc/scratch_buffer_dupfree.c
   lib/malloc/scratch_buffer_grow.c
   lib/malloc/scratch_buffer_grow_preserve.c
   lib/malloc/scratch_buffer_set_array_size.c
@@ -1216,7 +1217,6 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/gettime.m4
   m4/gettimeofday.m4
   m4/gl-openssl.m4
-  m4/glibc21.m4
   m4/gnulib-common.m4
   m4/group-member.m4
   m4/ieee754-h.m4
diff --git a/m4/group-member.m4 b/m4/group-member.m4
index ccf80137a4c..7a7bb40afcb 100644
--- a/m4/group-member.m4
+++ b/m4/group-member.m4
@@ -1,7 +1,6 @@
 # serial 14
 
-# Copyright (C) 1999-2001, 2003-2007, 2009-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 1999-2001, 2003-2007, 2009-2021 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/mempcpy.m4 b/m4/mempcpy.m4
index 75afbb695fc..c5ee2af8ccd 100644
--- a/m4/mempcpy.m4
+++ b/m4/mempcpy.m4
@@ -1,6 +1,6 @@
 # mempcpy.m4 serial 11
-dnl Copyright (C) 2003-2004, 2006-2007, 2009-2021 Free Software
-dnl Foundation, Inc.
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memrchr.m4 b/m4/memrchr.m4
index b4c21ab4d23..d0c05896e54 100644
--- a/m4/memrchr.m4
+++ b/m4/memrchr.m4
@@ -1,6 +1,6 @@
 # memrchr.m4 serial 10
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software
-dnl Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mktime.m4 b/m4/mktime.m4
index 94c31084f1b..245649e774a 100644
--- a/m4/mktime.m4
+++ b/m4/mktime.m4
@@ -1,6 +1,6 @@
 # serial 35
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software
-dnl Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nstrftime.m4 b/m4/nstrftime.m4
index 6ebde79a6c2..4674442810b 100644
--- a/m4/nstrftime.m4
+++ b/m4/nstrftime.m4
@@ -1,7 +1,6 @@
 # serial 36
 
-# Copyright (C) 1996-1997, 1999-2007, 2009-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 1996-1997, 1999-2007, 2009-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/pathmax.m4 b/m4/pathmax.m4
index 6059496bd86..e67c656659b 100644
--- a/m4/pathmax.m4
+++ b/m4/pathmax.m4
@@ -1,6 +1,6 @@
 # pathmax.m4 serial 11
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2021 Free Software
-dnl Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2021 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/regex.m4 b/m4/regex.m4
index f35c981cedd..850c572228a 100644
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,4 +1,4 @@
-# serial 70
+# serial 71
 
 # Copyright (C) 1996-2001, 2003-2021 Free Software Foundation, Inc.
 #
@@ -354,7 +354,6 @@ AC_DEFUN([gl_PREREQ_REGEX],
   AC_REQUIRE([AC_C_RESTRICT])
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
   AC_REQUIRE([gl_EEMALLOC])
-  AC_REQUIRE([gl_GLIBC21])
   AC_CHECK_HEADERS([libintl.h])
   AC_CHECK_FUNCS_ONCE([isblank iswctype])
   AC_CHECK_DECLS([isblank], [], [], [[#include <ctype.h>]])
diff --git a/m4/sig2str.m4 b/m4/sig2str.m4
index 974f68ab012..8951bbd7f0c 100644
--- a/m4/sig2str.m4
+++ b/m4/sig2str.m4
@@ -1,6 +1,5 @@
 # serial 7
-dnl Copyright (C) 2002, 2005-2006, 2009-2021 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ssize_t.m4 b/m4/ssize_t.m4
index 4bd88b3b091..f0ed509fcc5 100644
--- a/m4/ssize_t.m4
+++ b/m4/ssize_t.m4
@@ -1,6 +1,5 @@
 # ssize_t.m4 serial 5 (gettext-0.18.2)
-dnl Copyright (C) 2001-2003, 2006, 2010-2021 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2001-2003, 2006, 2010-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stat-time.m4 b/m4/stat-time.m4
index 46c5ac9e640..df1c2a7453a 100644
--- a/m4/stat-time.m4
+++ b/m4/stat-time.m4
@@ -1,7 +1,7 @@
 # Checks for stat-related time functions.
 
-# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2021 Free
-# Software Foundation, Inc.
+# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2021 Free Software
+# Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4
index 7500a014472..4c3f24accaa 100644
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@@ -1,4 +1,4 @@
-# stdio_h.m4 serial 51
+# stdio_h.m4 serial 52
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -180,6 +180,13 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS],
   GNULIB_VPRINTF_POSIX=0;        AC_SUBST([GNULIB_VPRINTF_POSIX])
   GNULIB_VSNPRINTF=0;            AC_SUBST([GNULIB_VSNPRINTF])
   GNULIB_VSPRINTF_POSIX=0;       AC_SUBST([GNULIB_VSPRINTF_POSIX])
+  dnl Support Microsoft deprecated alias function names by default.
+  GNULIB_MDA_FCLOSEALL=1;        AC_SUBST([GNULIB_MDA_FCLOSEALL])
+  GNULIB_MDA_FDOPEN=1;           AC_SUBST([GNULIB_MDA_FDOPEN])
+  GNULIB_MDA_FILENO=1;           AC_SUBST([GNULIB_MDA_FILENO])
+  GNULIB_MDA_GETW=1;             AC_SUBST([GNULIB_MDA_GETW])
+  GNULIB_MDA_PUTW=1;             AC_SUBST([GNULIB_MDA_PUTW])
+  GNULIB_MDA_TEMPNAM=1;          AC_SUBST([GNULIB_MDA_TEMPNAM])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_DECL_FCLOSEALL=1;         AC_SUBST([HAVE_DECL_FCLOSEALL])
   HAVE_DECL_FPURGE=1;            AC_SUBST([HAVE_DECL_FPURGE])
diff --git a/m4/stdlib_h.m4 b/m4/stdlib_h.m4
index 9c944dafbf7..5a02972e05d 100644
--- a/m4/stdlib_h.m4
+++ b/m4/stdlib_h.m4
@@ -1,4 +1,4 @@
-# stdlib_h.m4 serial 54
+# stdlib_h.m4 serial 55
 dnl Copyright (C) 2007-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -95,6 +95,12 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
   GNULIB_UNLOCKPT=0;      AC_SUBST([GNULIB_UNLOCKPT])
   GNULIB_UNSETENV=0;      AC_SUBST([GNULIB_UNSETENV])
   GNULIB_WCTOMB=0;        AC_SUBST([GNULIB_WCTOMB])
+  dnl Support Microsoft deprecated alias function names by default.
+  GNULIB_MDA_ECVT=1;      AC_SUBST([GNULIB_MDA_ECVT])
+  GNULIB_MDA_FCVT=1;      AC_SUBST([GNULIB_MDA_FCVT])
+  GNULIB_MDA_GCVT=1;      AC_SUBST([GNULIB_MDA_GCVT])
+  GNULIB_MDA_MKTEMP=1;    AC_SUBST([GNULIB_MDA_MKTEMP])
+  GNULIB_MDA_PUTENV=1;    AC_SUBST([GNULIB_MDA_PUTENV])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE__EXIT=1;              AC_SUBST([HAVE__EXIT])
   HAVE_ALIGNED_ALLOC=1;      AC_SUBST([HAVE_ALIGNED_ALLOC])
diff --git a/m4/string_h.m4 b/m4/string_h.m4
index 09a659cb98d..3e65355735c 100644
--- a/m4/string_h.m4
+++ b/m4/string_h.m4
@@ -5,7 +5,7 @@
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
-# serial 27
+# serial 28
 
 # Written by Paul Eggert.
 
@@ -86,6 +86,9 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
   GNULIB_STRSIGNAL=0;        AC_SUBST([GNULIB_STRSIGNAL])
   GNULIB_STRVERSCMP=0;       AC_SUBST([GNULIB_STRVERSCMP])
   HAVE_MBSLEN=0;             AC_SUBST([HAVE_MBSLEN])
+  dnl Support Microsoft deprecated alias function names by default.
+  GNULIB_MDA_MEMCCPY=1;      AC_SUBST([GNULIB_MDA_MEMCCPY])
+  GNULIB_MDA_STRDUP=1;       AC_SUBST([GNULIB_MDA_STRDUP])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_EXPLICIT_BZERO=1;        AC_SUBST([HAVE_EXPLICIT_BZERO])
   HAVE_FFSL=1;                  AC_SUBST([HAVE_FFSL])
diff --git a/m4/strnlen.m4 b/m4/strnlen.m4
index 7cc8dcea984..bb9a680fdc4 100644
--- a/m4/strnlen.m4
+++ b/m4/strnlen.m4
@@ -1,6 +1,6 @@
 # strnlen.m4 serial 13
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software
-dnl Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtoimax.m4 b/m4/strtoimax.m4
index b0fa904ebc3..d767d574510 100644
--- a/m4/strtoimax.m4
+++ b/m4/strtoimax.m4
@@ -1,6 +1,5 @@
 # strtoimax.m4 serial 16
-dnl Copyright (C) 2002-2004, 2006, 2009-2021 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2002-2004, 2006, 2009-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtoll.m4 b/m4/strtoll.m4
index a232ded6df7..d2c9e5310d1 100644
--- a/m4/strtoll.m4
+++ b/m4/strtoll.m4
@@ -1,6 +1,5 @@
 # strtoll.m4 serial 8
-dnl Copyright (C) 2002, 2004, 2006, 2008-2021 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2002, 2004, 2006, 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_stat_h.m4 b/m4/sys_stat_h.m4
index 3305764b61b..e8eac71b466 100644
--- a/m4/sys_stat_h.m4
+++ b/m4/sys_stat_h.m4
@@ -1,4 +1,4 @@
-# sys_stat_h.m4 serial 34   -*- Autoconf -*-
+# sys_stat_h.m4 serial 36   -*- Autoconf -*-
 dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -71,6 +71,7 @@ AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
   GNULIB_GETUMASK=0;    AC_SUBST([GNULIB_GETUMASK])
   GNULIB_LCHMOD=0;      AC_SUBST([GNULIB_LCHMOD])
   GNULIB_LSTAT=0;       AC_SUBST([GNULIB_LSTAT])
+  GNULIB_MKDIR=0;       AC_SUBST([GNULIB_MKDIR])
   GNULIB_MKDIRAT=0;     AC_SUBST([GNULIB_MKDIRAT])
   GNULIB_MKFIFO=0;      AC_SUBST([GNULIB_MKFIFO])
   GNULIB_MKFIFOAT=0;    AC_SUBST([GNULIB_MKFIFOAT])
@@ -79,6 +80,10 @@ AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
   GNULIB_STAT=0;        AC_SUBST([GNULIB_STAT])
   GNULIB_UTIMENSAT=0;   AC_SUBST([GNULIB_UTIMENSAT])
   GNULIB_OVERRIDES_STRUCT_STAT=0; AC_SUBST([GNULIB_OVERRIDES_STRUCT_STAT])
+  dnl Support Microsoft deprecated alias function names by default.
+  GNULIB_MDA_CHMOD=1;   AC_SUBST([GNULIB_MDA_CHMOD])
+  GNULIB_MDA_MKDIR=1;   AC_SUBST([GNULIB_MDA_MKDIR])
+  GNULIB_MDA_UMASK=1;   AC_SUBST([GNULIB_MDA_UMASK])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_FCHMODAT=1;      AC_SUBST([HAVE_FCHMODAT])
   HAVE_FSTATAT=1;       AC_SUBST([HAVE_FSTATAT])
diff --git a/m4/time_h.m4 b/m4/time_h.m4
index 296ee450355..07e6967e45b 100644
--- a/m4/time_h.m4
+++ b/m4/time_h.m4
@@ -1,9 +1,8 @@
 # Configure a more-standard replacement for <time.h>.
 
-# Copyright (C) 2000-2001, 2003-2007, 2009-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 2000-2001, 2003-2007, 2009-2021 Free Software Foundation, Inc.
 
-# serial 12
+# serial 13
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -117,6 +116,8 @@ AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS],
   GNULIB_TIME_R=0;                       AC_SUBST([GNULIB_TIME_R])
   GNULIB_TIME_RZ=0;                      AC_SUBST([GNULIB_TIME_RZ])
   GNULIB_TZSET=0;                        AC_SUBST([GNULIB_TZSET])
+  dnl Support Microsoft deprecated alias function names by default.
+  GNULIB_MDA_TZSET=1;                    AC_SUBST([GNULIB_MDA_TZSET])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_DECL_LOCALTIME_R=1;               AC_SUBST([HAVE_DECL_LOCALTIME_R])
   HAVE_NANOSLEEP=1;                      AC_SUBST([HAVE_NANOSLEEP])
diff --git a/m4/timespec.m4 b/m4/timespec.m4
index 3af3d12c6d6..40307d4f607 100644
--- a/m4/timespec.m4
+++ b/m4/timespec.m4
@@ -1,7 +1,6 @@
 #serial 15
 
-# Copyright (C) 2000-2001, 2003-2007, 2009-2021 Free Software
-# Foundation, Inc.
+# Copyright (C) 2000-2001, 2003-2007, 2009-2021 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
index 38c8a45d0f3..0f26fb908d3 100644
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@@ -1,4 +1,4 @@
-# unistd_h.m4 serial 83
+# unistd_h.m4 serial 85
 dnl Copyright (C) 2006-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -42,6 +42,7 @@ AC_DEFUN([gl_UNISTD_H],
 # endif
 #endif
     ]], [access chdir chown copy_file_range dup dup2 dup3 environ euidaccess
+    execl execle execlp execv execve execvp execvpe
     faccessat fchdir
     fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize
     getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass
@@ -79,6 +80,13 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_DUP3=0;                 AC_SUBST([GNULIB_DUP3])
   GNULIB_ENVIRON=0;              AC_SUBST([GNULIB_ENVIRON])
   GNULIB_EUIDACCESS=0;           AC_SUBST([GNULIB_EUIDACCESS])
+  GNULIB_EXECL=0;                AC_SUBST([GNULIB_EXECL])
+  GNULIB_EXECLE=0;               AC_SUBST([GNULIB_EXECLE])
+  GNULIB_EXECLP=0;               AC_SUBST([GNULIB_EXECLP])
+  GNULIB_EXECV=0;                AC_SUBST([GNULIB_EXECV])
+  GNULIB_EXECVE=0;               AC_SUBST([GNULIB_EXECVE])
+  GNULIB_EXECVP=0;               AC_SUBST([GNULIB_EXECVP])
+  GNULIB_EXECVPE=0;              AC_SUBST([GNULIB_EXECVPE])
   GNULIB_FACCESSAT=0;            AC_SUBST([GNULIB_FACCESSAT])
   GNULIB_FCHDIR=0;               AC_SUBST([GNULIB_FCHDIR])
   GNULIB_FCHOWNAT=0;             AC_SUBST([GNULIB_FCHOWNAT])
@@ -123,11 +131,34 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_UNLINKAT=0;             AC_SUBST([GNULIB_UNLINKAT])
   GNULIB_USLEEP=0;               AC_SUBST([GNULIB_USLEEP])
   GNULIB_WRITE=0;                AC_SUBST([GNULIB_WRITE])
+  dnl Support Microsoft deprecated alias function names by default.
+  GNULIB_MDA_ACCESS=1;           AC_SUBST([GNULIB_MDA_ACCESS])
+  GNULIB_MDA_CHDIR=1;            AC_SUBST([GNULIB_MDA_CHDIR])
+  GNULIB_MDA_CLOSE=1;            AC_SUBST([GNULIB_MDA_CLOSE])
+  GNULIB_MDA_DUP=1;              AC_SUBST([GNULIB_MDA_DUP])
+  GNULIB_MDA_DUP2=1;             AC_SUBST([GNULIB_MDA_DUP2])
+  GNULIB_MDA_EXECL=1;            AC_SUBST([GNULIB_MDA_EXECL])
+  GNULIB_MDA_EXECLE=1;           AC_SUBST([GNULIB_MDA_EXECLE])
+  GNULIB_MDA_EXECLP=1;           AC_SUBST([GNULIB_MDA_EXECLP])
+  GNULIB_MDA_EXECV=1;            AC_SUBST([GNULIB_MDA_EXECV])
+  GNULIB_MDA_EXECVE=1;           AC_SUBST([GNULIB_MDA_EXECVE])
+  GNULIB_MDA_EXECVP=1;           AC_SUBST([GNULIB_MDA_EXECVP])
+  GNULIB_MDA_EXECVPE=1;          AC_SUBST([GNULIB_MDA_EXECVPE])
+  GNULIB_MDA_GETCWD=1;           AC_SUBST([GNULIB_MDA_GETCWD])
+  GNULIB_MDA_GETPID=1;           AC_SUBST([GNULIB_MDA_GETPID])
+  GNULIB_MDA_ISATTY=1;           AC_SUBST([GNULIB_MDA_ISATTY])
+  GNULIB_MDA_LSEEK=1;            AC_SUBST([GNULIB_MDA_LSEEK])
+  GNULIB_MDA_READ=1;             AC_SUBST([GNULIB_MDA_READ])
+  GNULIB_MDA_RMDIR=1;            AC_SUBST([GNULIB_MDA_RMDIR])
+  GNULIB_MDA_SWAB=1;             AC_SUBST([GNULIB_MDA_SWAB])
+  GNULIB_MDA_UNLINK=1;           AC_SUBST([GNULIB_MDA_UNLINK])
+  GNULIB_MDA_WRITE=1;            AC_SUBST([GNULIB_MDA_WRITE])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_CHOWN=1;           AC_SUBST([HAVE_CHOWN])
   HAVE_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE])
   HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
   HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
+  HAVE_EXECVPE=1;         AC_SUBST([HAVE_EXECVPE])
   HAVE_FACCESSAT=1;       AC_SUBST([HAVE_FACCESSAT])
   HAVE_FCHDIR=1;          AC_SUBST([HAVE_FCHDIR])
   HAVE_FCHOWNAT=1;        AC_SUBST([HAVE_FCHOWNAT])
@@ -176,6 +207,13 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   REPLACE_CLOSE=0;        AC_SUBST([REPLACE_CLOSE])
   REPLACE_DUP=0;          AC_SUBST([REPLACE_DUP])
   REPLACE_DUP2=0;         AC_SUBST([REPLACE_DUP2])
+  REPLACE_EXECL=0;        AC_SUBST([REPLACE_EXECL])
+  REPLACE_EXECLE=0;       AC_SUBST([REPLACE_EXECLE])
+  REPLACE_EXECLP=0;       AC_SUBST([REPLACE_EXECLP])
+  REPLACE_EXECV=0;        AC_SUBST([REPLACE_EXECV])
+  REPLACE_EXECVE=0;       AC_SUBST([REPLACE_EXECVE])
+  REPLACE_EXECVP=0;       AC_SUBST([REPLACE_EXECVP])
+  REPLACE_EXECVPE=0;      AC_SUBST([REPLACE_EXECVPE])
   REPLACE_FACCESSAT=0;    AC_SUBST([REPLACE_FACCESSAT])
   REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])
   REPLACE_FTRUNCATE=0;    AC_SUBST([REPLACE_FTRUNCATE])