Update Gnulib to v0.0-3955-g8ab5996.

2025-04-29 19:30:36 +02:00 · 2010-05-29 23:58:12 +02:00 · 2010-05-29 23:58:12 +02:00 · a927b6c1d8
commit a927b6c1d8
parent 9c17af4070
71 changed files with 2261 additions and 842 deletions
--- a/12
+++ b/12
@ -49,7 +49,7 @@ include $(srcdir)/maint.mk

 # Allow cfg.mk to override these.
 _build-aux ?= build-aux
-_autoreconf ?= autoreconf
+_autoreconf ?= autoreconf -v

 # Ensure that $(VERSION) is up to date for dist-related targets, but not
 # for others: rerunning autoreconf and recompiling everything isn't cheap.
@ -60,8 +60,10 @@ ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL))
    $(filter maintainer-% dist% alpha beta major,$(MAKECMDGOALS)))
  _is-install-target ?= $(filter-out %check, $(filter install%,$(MAKECMDGOALS)))
  ifneq (,$(_is-dist-target)$(_is-install-target))
-    _curr-ver := $(shell cd $(srcdir) \
-                   && $(_build-aux)/git-version-gen .tarball-version)
+    _curr-ver := $(shell cd $(srcdir)				\
+                   && $(_build-aux)/git-version-gen		\
+                         .tarball-version			\
+                         $(git-version-gen-tag-sed-script))
    ifneq ($(_curr-ver),$(VERSION))
      ifeq ($(_curr-ver),UNKNOWN)
        $(info WARNING: unable to verify if $(VERSION) is the correct version)
@ -78,7 +80,8 @@ ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL))
          $(info run '$(MAKE) _version' to fix it)
        else
          $(info INFO: running autoreconf for new version string: $(_curr-ver))
-          _dummy := $(shell $(MAKE) $(AM_MAKEFLAGS) _version)
+GNUmakefile: _version
+	touch GNUmakefile
        endif
      endif
    endif
@ -88,6 +91,7 @@ endif
 .PHONY: _version
 _version:
 	cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf)
+	$(MAKE) $(AM_MAKEFLAGS) Makefile

 else

--- a/build-aux/announce-gen
+++ b/build-aux/announce-gen
@ -3,7 +3,7 @@ eval '(exit $?0)' && eval 'exec perl -wS "$0" ${1+"$@"}'
    if 0;
 # Generate a release announcement message.

-my $VERSION = '2009-11-20 13:36'; # UTC
+my $VERSION = '2010-05-03 20:17'; # UTC
 # The definition above must lie within the first 8 lines in order
 # for the Emacs time-stamp write hook (at end) to update it.
 # If you change this file with Emacs, please let the write hook
@ -75,6 +75,8 @@ The following are optional:
                                required if gnulib is in TOOL_LIST.
   --no-print-checksums         do not emit MD5 or SHA1 checksums
   --archive-suffix=SUF         add SUF to the list of archive suffixes
+   --mail-headers=HEADERS       a space-separated list of mail headers, e.g.,
+                                To: x\@example.com Cc: y-announce\@example.com,...

   --help             display this help and exit
   --version          output version information and exit
@ -346,6 +348,7 @@ sub get_tool_versions ($$)
  # issue "1,2" instead of "1.2", what confuses our regexps.
  $ENV{LC_ALL} = "C";

+  my $mail_headers;
  my $release_type;
  my $package_name;
  my $prev_version;
@ -359,6 +362,7 @@ sub get_tool_versions ($$)

  GetOptions
    (
+     'mail-headers=s'     => \$mail_headers,
     'release-type=s'     => \$release_type,
     'package-name=s'     => \$package_name,
     'previous-version=s' => \$prev_version,
@ -422,11 +426,18 @@ sub get_tool_versions ($$)
  %size
    or exit 1;

+  my $headers = '';
+  if (defined $mail_headers)
+    {
+      ($headers = $mail_headers) =~ s/\s+(\S+:)/\n$1/g;
+      $headers .= "\n";
+    }
+
  # The markup is escaped as <\# so that when this script is sent by
  # mail (or part of a diff), Gnus is not triggered.
  print <<EOF;

-Subject: $my_distdir released [$release_type]
+${headers}Subject: $my_distdir released [$release_type]

 <\#secure method=pgpmime mode=sign>

--- a/build-aux/c++defs.h
+++ b/build-aux/c++defs.h
@ -126,6 +126,24 @@
    _GL_EXTERN_C int _gl_cxxalias_dummy
 #endif

+/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
+   is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
+   except that the C function rpl_func may have a slightly different
+   declaration.  A cast is used to silence the "invalid conversion" error
+   that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                     \
+    {                                                              \
+      rettype (*const func) parameters =                           \
+        reinterpret_cast<rettype(*)parameters>(::rpl_func);        \
+    }                                                              \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
 /* _GL_CXXALIAS_SYS (func, rettype, parameters);
   declares a C++ alias called GNULIB_NAMESPACE::func
   that redirects to the system provided function func, if GNULIB_NAMESPACE
@ -203,10 +221,20 @@
   _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
 # define _GL_CXXALIASWARN_1(func,namespace) \
   _GL_CXXALIASWARN_2 (func, namespace)
-# define _GL_CXXALIASWARN_2(func,namespace) \
-   _GL_WARN_ON_USE (func, \
-                    "The symbol ::" #func " refers to the system function. " \
-                    "Use " #namespace "::" #func " instead.")
+/* To work around GCC bug <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !__OPTIMIZE__
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+    _GL_WARN_ON_USE (func, \
+                     "The symbol ::" #func " refers to the system function. " \
+                     "Use " #namespace "::" #func " instead.")
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     extern __typeof__ (func) func
+# else
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
 #else
 # define _GL_CXXALIASWARN(func) \
    _GL_EXTERN_C int _gl_cxxalias_dummy
@ -221,10 +249,20 @@
                        GNULIB_NAMESPACE)
 # define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
   _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
-# define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
-   _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \
-                        "The symbol ::" #func " refers to the system function. " \
-                        "Use " #namespace "::" #func " instead.")
+/* To work around GCC bug <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !__OPTIMIZE__
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+    _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \
+                         "The symbol ::" #func " refers to the system function. " \
+                         "Use " #namespace "::" #func " instead.")
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+     extern __typeof__ (func) func
+# else
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
 #else
 # define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
    _GL_EXTERN_C int _gl_cxxalias_dummy
--- a/build-aux/gendocs.sh
+++ b/build-aux/gendocs.sh
@ -2,7 +2,7 @@
 # gendocs.sh -- generate a GNU manual in many formats.  This script is
 #   mentioned in maintain.texi.  See the help message below for usage details.

-scriptversion=2010-02-13.20
+scriptversion=2010-05-04.09

 # Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
 # Free Software Foundation, Inc.
@ -149,8 +149,16 @@ while test $# -gt 0; do
  shift
 done

+# For most of the following, the base name is just $PACKAGE
+base=$PACKAGE
+
 if test -n "$srcfile"; then
-  :
+  # but here, we use the basename of $srcfile
+  base=`basename "$srcfile"`
+  case $base in
+    *.txi|*.texi|*.texinfo) base=`echo "$base"|sed 's/\.[texinfo]*$//'`;;
+  esac
+  PACKAGE=$base
 elif test -s "$srcdir/$PACKAGE.texinfo"; then
  srcfile=$srcdir/$PACKAGE.texinfo
 elif test -s "$srcdir/$PACKAGE.texi"; then
--- a/build-aux/gnu-web-doc-update
+++ b/build-aux/gnu-web-doc-update
@ -90,7 +90,9 @@ trap 'exit $?' 1 2 13 15
 # just-released version number, not some string like 7.6.18-20761.
 # That version string propagates into all documentation.
 git checkout -b $tmp_branch v$version
-./bootstrap && ./configure && make && make web-manual
+ok=0
+./bootstrap && ./configure && make && make web-manual && ok=1
+test $ok = 1 || exit 1

 tmp=$(mktemp -d --tmpdir=. web-doc-update.XXXXXX) || exit 1
 ( cd $tmp \
--- a/build-aux/gnupload
+++ b/build-aux/gnupload
@ -1,7 +1,7 @@
 #!/bin/sh
 # Sign files and upload them.

-scriptversion=2010-02-08.07; # UTC
+scriptversion=2010-05-23.15; # UTC

 # Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
 # Foundation, Inc.
@ -32,6 +32,8 @@ delete_files=
 delete_symlinks=
 collect_var=
 dbg=
+nl='
+'

 usage="Usage: $0 [OPTION]... [CMD] FILE... [[CMD] FILE...]

@ -109,7 +111,8 @@ Send patches to <automake-patches@gnu.org>."
 # Read local configuration file
 if test -r "$conffile"; then
  echo "$0: Reading configuration file $conffile"
-  eval set x "`sed 's/#.*$//;/^$/d' \"$conffile\" | tr '\012\015' '  '` \"\$@\""
+  conf=`sed 's/#.*$//;/^$/d' "$conffile" | tr "\015$nl" '  '`
+  eval set x "$conf \"\$@\""
  shift
 fi

@ -185,7 +188,7 @@ done

 dprint()
 {
-  echo "Running $*..."
+  echo "Running $* ..."
 }

 if $dry_run; then
@ -249,7 +252,7 @@ echo
 if test $# -ne 0; then
  for file
  do
-    echo "Signing $file..."
+    echo "Signing $file ..."
    rm -f $file.sig
    echo "$passphrase" | $dbg $GPG --passphrase-fd 0 -ba -o $file.sig $file
  done
@ -388,7 +391,7 @@ for dest in $to
 do
  for file
  do
-    echo "Uploading $file to $dest..."
+    echo "Uploading $file to $dest ..."
    stmt=
    files="$file $file.sig"
    destdir=`echo $dest | sed 's/[^:]*://'`
--- a/build-aux/vc-list-files
+++ b/build-aux/vc-list-files
@ -2,7 +2,7 @@
 # List version-controlled file names.

 # Print a version string.
-scriptversion=2010-02-21.13; # UTC
+scriptversion=2010-04-23.22; # UTC

 # Copyright (C) 2006-2010 Free Software Foundation, Inc.

@ -102,6 +102,8 @@ elif test -d CVS; then
 	}}'\''				\
      `find "$dir" -name Entries -print` /dev/null' $postprocess
  fi
+elif test -d .svn; then
+  eval exec svn list -R '"$dir"' $postprocess
 else
  echo "$0: Failed to determine type of version control used in `pwd`" 1>&2
  exit 1
--- a/build-aux/warn-on-use.h
+++ b/build-aux/warn-on-use.h
@ -67,10 +67,13 @@
 /* A compiler attribute is available in gcc versions 4.3.0 and later.  */
 #  define _GL_WARN_ON_USE(function, message) \
 extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
-
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#  define _GL_WARN_ON_USE(function, message) \
+extern __typeof__ (function) function
 # else /* Unsupported.  */
 #  define _GL_WARN_ON_USE(function, message) \
-extern int _gl_warn_on_use
+_GL_WARN_EXTERN_C int _gl_warn_on_use
 # endif
 #endif

@ -85,8 +88,22 @@ extern int _gl_warn_on_use
 #  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
 extern rettype function parameters_and_attributes \
     __attribute__ ((__warning__ (msg)))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
+extern rettype function parameters_and_attributes
 # else /* Unsupported.  */
 #  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
-extern int _gl_warn_on_use
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+# endif
+#endif
+
+/* _GL_WARN_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#ifndef _GL_WARN_EXTERN_C
+# if defined __cplusplus
+#  define _GL_WARN_EXTERN_C extern "C"
+# else
+#  define _GL_WARN_EXTERN_C extern
 # endif
 #endif
--- a/doc/gendocs_template
+++ b/doc/gendocs_template
@ -85,7 +85,7 @@ Please send broken links and other corrections or suggestions to
 <a href="mailto:%%EMAIL%%">&lt;%%EMAIL%%&gt;</a>.
 </p>

-<p>Copyright &copy; 2009 Free Software Foundation, Inc.</p>
+<p>Copyright &copy; 2010 Free Software Foundation, Inc.</p>

 <p>Verbatim copying and distribution of this entire article is
 permitted in any medium, provided this notice is preserved.</p>
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@ -491,6 +491,13 @@ AM_CFLAGS += $(CFLAG_VISIBILITY)

 ## end   gnulib module lib-symbol-visibility

+## begin gnulib module libunistring
+
+
+EXTRA_DIST += libunistring.valgrind
+
+## end   gnulib module libunistring
+
 ## begin gnulib module localcharset

 libgnu_la_SOURCES += localcharset.h localcharset.c
@ -663,11 +670,11 @@ EXTRA_libgnu_la_SOURCES += memchr.c

 ## begin gnulib module netdb

-BUILT_SOURCES += $(NETDB_H)
+BUILT_SOURCES += netdb.h

 # We need the following in order to create <netdb.h> when the system
 # doesn't have one that works with the given compiler.
-netdb.h: netdb.in.h $(ARG_NONNULL_H)
+netdb.h: netdb.in.h $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
 	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
@ -681,6 +688,7 @@ netdb.h: netdb.in.h $(ARG_NONNULL_H)
 	      -e 's|@''HAVE_DECL_GETADDRINFO''@|$(HAVE_DECL_GETADDRINFO)|g' \
 	      -e 's|@''HAVE_DECL_GETNAMEINFO''@|$(HAVE_DECL_GETNAMEINFO)|g' \
 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
 	      < $(srcdir)/netdb.in.h; \
 	} > $@-t && \
 	mv $@-t $@
@ -929,6 +937,7 @@ stdio.h: stdio.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''GNULIB_SNPRINTF''@|$(GNULIB_SNPRINTF)|g' \
 	      -e 's|@''GNULIB_SPRINTF_POSIX''@|$(GNULIB_SPRINTF_POSIX)|g' \
 	      -e 's|@''GNULIB_STDIO_H_SIGPIPE''@|$(GNULIB_STDIO_H_SIGPIPE)|g' \
+	      -e 's|@''GNULIB_TMPFILE''@|$(GNULIB_TMPFILE)|g' \
 	      -e 's|@''GNULIB_VASPRINTF''@|$(GNULIB_VASPRINTF)|g' \
 	      -e 's|@''GNULIB_VDPRINTF''@|$(GNULIB_VDPRINTF)|g' \
 	      -e 's|@''GNULIB_VFPRINTF''@|$(GNULIB_VFPRINTF)|g' \
@ -945,6 +954,8 @@ stdio.h: stdio.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''HAVE_DECL_SNPRINTF''@|$(HAVE_DECL_SNPRINTF)|g' \
 	      -e 's|@''HAVE_DECL_VSNPRINTF''@|$(HAVE_DECL_VSNPRINTF)|g' \
 	      -e 's|@''HAVE_DPRINTF''@|$(HAVE_DPRINTF)|g' \
+	      -e 's|@''HAVE_FSEEKO''@|$(HAVE_FSEEKO)|g' \
+	      -e 's|@''HAVE_FTELLO''@|$(HAVE_FTELLO)|g' \
 	      -e 's|@''HAVE_RENAMEAT''@|$(HAVE_RENAMEAT)|g' \
 	      -e 's|@''HAVE_VASPRINTF''@|$(HAVE_VASPRINTF)|g' \
 	      -e 's|@''HAVE_VDPRINTF''@|$(HAVE_VDPRINTF)|g' \
@ -971,12 +982,14 @@ stdio.h: stdio.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''REPLACE_SNPRINTF''@|$(REPLACE_SNPRINTF)|g' \
 	      -e 's|@''REPLACE_SPRINTF''@|$(REPLACE_SPRINTF)|g' \
 	      -e 's|@''REPLACE_STDIO_WRITE_FUNCS''@|$(REPLACE_STDIO_WRITE_FUNCS)|g' \
+	      -e 's|@''REPLACE_TMPFILE''@|$(REPLACE_TMPFILE)|g' \
 	      -e 's|@''REPLACE_VASPRINTF''@|$(REPLACE_VASPRINTF)|g' \
 	      -e 's|@''REPLACE_VDPRINTF''@|$(REPLACE_VDPRINTF)|g' \
 	      -e 's|@''REPLACE_VFPRINTF''@|$(REPLACE_VFPRINTF)|g' \
 	      -e 's|@''REPLACE_VPRINTF''@|$(REPLACE_VPRINTF)|g' \
 	      -e 's|@''REPLACE_VSNPRINTF''@|$(REPLACE_VSNPRINTF)|g' \
 	      -e 's|@''REPLACE_VSPRINTF''@|$(REPLACE_VSPRINTF)|g' \
+	      -e 's|@''ASM_SYMBOL_PREFIX''@|$(ASM_SYMBOL_PREFIX)|g' \
 	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
 	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)'; \
@ -1007,12 +1020,14 @@ stdlib.h: stdlib.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''GNULIB_CANONICALIZE_FILE_NAME''@|$(GNULIB_CANONICALIZE_FILE_NAME)|g' \
 	      -e 's|@''GNULIB_GETLOADAVG''@|$(GNULIB_GETLOADAVG)|g' \
 	      -e 's|@''GNULIB_GETSUBOPT''@|$(GNULIB_GETSUBOPT)|g' \
+	      -e 's|@''GNULIB_GRANTPT''@|$(GNULIB_GRANTPT)|g' \
 	      -e 's|@''GNULIB_MALLOC_POSIX''@|$(GNULIB_MALLOC_POSIX)|g' \
 	      -e 's|@''GNULIB_MKDTEMP''@|$(GNULIB_MKDTEMP)|g' \
 	      -e 's|@''GNULIB_MKOSTEMP''@|$(GNULIB_MKOSTEMP)|g' \
 	      -e 's|@''GNULIB_MKOSTEMPS''@|$(GNULIB_MKOSTEMPS)|g' \
 	      -e 's|@''GNULIB_MKSTEMP''@|$(GNULIB_MKSTEMP)|g' \
 	      -e 's|@''GNULIB_MKSTEMPS''@|$(GNULIB_MKSTEMPS)|g' \
+	      -e 's|@''GNULIB_PTSNAME''@|$(GNULIB_PTSNAME)|g' \
 	      -e 's|@''GNULIB_PUTENV''@|$(GNULIB_PUTENV)|g' \
 	      -e 's|@''GNULIB_RANDOM_R''@|$(GNULIB_RANDOM_R)|g' \
 	      -e 's|@''GNULIB_REALLOC_POSIX''@|$(GNULIB_REALLOC_POSIX)|g' \
@ -1022,17 +1037,21 @@ stdlib.h: stdlib.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''GNULIB_STRTOD''@|$(GNULIB_STRTOD)|g' \
 	      -e 's|@''GNULIB_STRTOLL''@|$(GNULIB_STRTOLL)|g' \
 	      -e 's|@''GNULIB_STRTOULL''@|$(GNULIB_STRTOULL)|g' \
+	      -e 's|@''GNULIB_UNLOCKPT''@|$(GNULIB_UNLOCKPT)|g' \
 	      -e 's|@''GNULIB_UNSETENV''@|$(GNULIB_UNSETENV)|g' \
 	      -e 's|@''HAVE_ATOLL''@|$(HAVE_ATOLL)|g' \
 	      -e 's|@''HAVE_CALLOC_POSIX''@|$(HAVE_CALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_CANONICALIZE_FILE_NAME''@|$(HAVE_CANONICALIZE_FILE_NAME)|g' \
 	      -e 's|@''HAVE_DECL_GETLOADAVG''@|$(HAVE_DECL_GETLOADAVG)|g' \
 	      -e 's|@''HAVE_GETSUBOPT''@|$(HAVE_GETSUBOPT)|g' \
+	      -e 's|@''HAVE_GRANTPT''@|$(HAVE_GRANTPT)|g' \
 	      -e 's|@''HAVE_MALLOC_POSIX''@|$(HAVE_MALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_MKDTEMP''@|$(HAVE_MKDTEMP)|g' \
 	      -e 's|@''HAVE_MKOSTEMP''@|$(HAVE_MKOSTEMP)|g' \
 	      -e 's|@''HAVE_MKOSTEMPS''@|$(HAVE_MKOSTEMPS)|g' \
+	      -e 's|@''HAVE_MKSTEMP''@|$(HAVE_MKSTEMP)|g' \
 	      -e 's|@''HAVE_MKSTEMPS''@|$(HAVE_MKSTEMPS)|g' \
+	      -e 's|@''HAVE_PTSNAME''@|$(HAVE_PTSNAME)|g' \
 	      -e 's|@''HAVE_RANDOM_H''@|$(HAVE_RANDOM_H)|g' \
 	      -e 's|@''HAVE_RANDOM_R''@|$(HAVE_RANDOM_R)|g' \
 	      -e 's|@''HAVE_REALLOC_POSIX''@|$(HAVE_REALLOC_POSIX)|g' \
@ -1044,6 +1063,7 @@ stdlib.h: stdlib.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''HAVE_STRTOULL''@|$(HAVE_STRTOULL)|g' \
 	      -e 's|@''HAVE_STRUCT_RANDOM_DATA''@|$(HAVE_STRUCT_RANDOM_DATA)|g' \
 	      -e 's|@''HAVE_SYS_LOADAVG_H''@|$(HAVE_SYS_LOADAVG_H)|g' \
+	      -e 's|@''HAVE_UNLOCKPT''@|$(HAVE_UNLOCKPT)|g' \
 	      -e 's|@''HAVE_UNSETENV''@|$(HAVE_UNSETENV)|g' \
 	      -e 's|@''REPLACE_CANONICALIZE_FILE_NAME''@|$(REPLACE_CANONICALIZE_FILE_NAME)|g' \
 	      -e 's|@''REPLACE_MKSTEMP''@|$(REPLACE_MKSTEMP)|g' \
@ -1135,6 +1155,7 @@ string.h: string.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''GNULIB_STPNCPY''@|$(GNULIB_STPNCPY)|g' \
 	      -e 's|@''GNULIB_STRCHRNUL''@|$(GNULIB_STRCHRNUL)|g' \
 	      -e 's|@''GNULIB_STRDUP''@|$(GNULIB_STRDUP)|g' \
+	      -e 's|@''GNULIB_STRNCAT''@|$(GNULIB_STRNCAT)|g' \
 	      -e 's|@''GNULIB_STRNDUP''@|$(GNULIB_STRNDUP)|g' \
 	      -e 's|@''GNULIB_STRNLEN''@|$(GNULIB_STRNLEN)|g' \
 	      -e 's|@''GNULIB_STRPBRK''@|$(GNULIB_STRPBRK)|g' \
@ -1147,6 +1168,7 @@ string.h: string.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''GNULIB_STRVERSCMP''@|$(GNULIB_STRVERSCMP)|g' \
 	      < $(srcdir)/string.in.h | \
 	  sed -e 's|@''HAVE_MBSLEN''@|$(HAVE_MBSLEN)|g' \
+	      -e 's|@''HAVE_MEMCHR''@|$(HAVE_MEMCHR)|g' \
 	      -e 's|@''HAVE_DECL_MEMMEM''@|$(HAVE_DECL_MEMMEM)|g' \
 	      -e 's|@''HAVE_MEMPCPY''@|$(HAVE_MEMPCPY)|g' \
 	      -e 's|@''HAVE_DECL_MEMRCHR''@|$(HAVE_DECL_MEMRCHR)|g' \
@ -1161,16 +1183,18 @@ string.h: string.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''HAVE_STRSEP''@|$(HAVE_STRSEP)|g' \
 	      -e 's|@''HAVE_STRCASESTR''@|$(HAVE_STRCASESTR)|g' \
 	      -e 's|@''HAVE_DECL_STRTOK_R''@|$(HAVE_DECL_STRTOK_R)|g' \
-	      -e 's|@''HAVE_DECL_STRERROR''@|$(HAVE_DECL_STRERROR)|g' \
 	      -e 's|@''HAVE_DECL_STRSIGNAL''@|$(HAVE_DECL_STRSIGNAL)|g' \
 	      -e 's|@''HAVE_STRVERSCMP''@|$(HAVE_STRVERSCMP)|g' \
+	      -e 's|@''REPLACE_STPNCPY''@|$(REPLACE_STPNCPY)|g' \
 	      -e 's|@''REPLACE_MEMCHR''@|$(REPLACE_MEMCHR)|g' \
 	      -e 's|@''REPLACE_MEMMEM''@|$(REPLACE_MEMMEM)|g' \
 	      -e 's|@''REPLACE_STRCASESTR''@|$(REPLACE_STRCASESTR)|g' \
 	      -e 's|@''REPLACE_STRDUP''@|$(REPLACE_STRDUP)|g' \
 	      -e 's|@''REPLACE_STRSTR''@|$(REPLACE_STRSTR)|g' \
 	      -e 's|@''REPLACE_STRERROR''@|$(REPLACE_STRERROR)|g' \
+	      -e 's|@''REPLACE_STRNCAT''@|$(REPLACE_STRNCAT)|g' \
 	      -e 's|@''REPLACE_STRNDUP''@|$(REPLACE_STRNDUP)|g' \
+	      -e 's|@''REPLACE_STRNLEN''@|$(REPLACE_STRNLEN)|g' \
 	      -e 's|@''REPLACE_STRSIGNAL''@|$(REPLACE_STRSIGNAL)|g' \
 	      -e 's|@''REPLACE_STRTOK_R''@|$(REPLACE_STRTOK_R)|g' \
 	      -e 's|@''UNDEFINE_STRTOK_R''@|$(UNDEFINE_STRTOK_R)|g' \
@ -1361,10 +1385,13 @@ time.h: time.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''GNULIB_STRPTIME''@|$(GNULIB_STRPTIME)|g' \
 	      -e 's|@''GNULIB_TIMEGM''@|$(GNULIB_TIMEGM)|g' \
 	      -e 's|@''GNULIB_TIME_R''@|$(GNULIB_TIME_R)|g' \
+	      -e 's|@''HAVE_LOCALTIME_R''@|$(HAVE_LOCALTIME_R)|g' \
+	      -e 's|@''HAVE_NANOSLEEP''@|$(HAVE_NANOSLEEP)|g' \
+	      -e 's|@''HAVE_STRPTIME''@|$(HAVE_STRPTIME)|g' \
+	      -e 's|@''HAVE_TIMEGM''@|$(HAVE_TIMEGM)|g' \
 	      -e 's|@''REPLACE_LOCALTIME_R''@|$(REPLACE_LOCALTIME_R)|g' \
 	      -e 's|@''REPLACE_MKTIME''@|$(REPLACE_MKTIME)|g' \
 	      -e 's|@''REPLACE_NANOSLEEP''@|$(REPLACE_NANOSLEEP)|g' \
-	      -e 's|@''REPLACE_STRPTIME''@|$(REPLACE_STRPTIME)|g' \
 	      -e 's|@''REPLACE_TIMEGM''@|$(REPLACE_TIMEGM)|g' \
 	      -e 's|@''SYS_TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
 	      -e 's|@''TIME_H_DEFINES_STRUCT_TIMESPEC''@|$(TIME_H_DEFINES_STRUCT_TIMESPEC)|g' \
@ -1428,12 +1455,14 @@ unistd.h: unistd.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''GNULIB_LSEEK''@|$(GNULIB_LSEEK)|g' \
 	      -e 's|@''GNULIB_PIPE2''@|$(GNULIB_PIPE2)|g' \
 	      -e 's|@''GNULIB_PREAD''@|$(GNULIB_PREAD)|g' \
+	      -e 's|@''GNULIB_PWRITE''@|$(GNULIB_PWRITE)|g' \
 	      -e 's|@''GNULIB_READLINK''@|$(GNULIB_READLINK)|g' \
 	      -e 's|@''GNULIB_READLINKAT''@|$(GNULIB_READLINKAT)|g' \
 	      -e 's|@''GNULIB_RMDIR''@|$(GNULIB_RMDIR)|g' \
 	      -e 's|@''GNULIB_SLEEP''@|$(GNULIB_SLEEP)|g' \
 	      -e 's|@''GNULIB_SYMLINK''@|$(GNULIB_SYMLINK)|g' \
 	      -e 's|@''GNULIB_SYMLINKAT''@|$(GNULIB_SYMLINKAT)|g' \
+	      -e 's|@''GNULIB_TTYNAME_R''@|$(GNULIB_TTYNAME_R)|g' \
 	      -e 's|@''GNULIB_UNISTD_H_GETOPT''@|$(GNULIB_UNISTD_H_GETOPT)|g' \
 	      -e 's|@''GNULIB_UNISTD_H_SIGPIPE''@|$(GNULIB_UNISTD_H_SIGPIPE)|g' \
 	      -e 's|@''GNULIB_UNLINK''@|$(GNULIB_UNLINK)|g' \
@ -1446,6 +1475,7 @@ unistd.h: unistd.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''HAVE_DUP3''@|$(HAVE_DUP3)|g' \
 	      -e 's|@''HAVE_EUIDACCESS''@|$(HAVE_EUIDACCESS)|g' \
 	      -e 's|@''HAVE_FACCESSAT''@|$(HAVE_FACCESSAT)|g' \
+	      -e 's|@''HAVE_FCHDIR''@|$(HAVE_FCHDIR)|g' \
 	      -e 's|@''HAVE_FCHOWNAT''@|$(HAVE_FCHOWNAT)|g' \
 	      -e 's|@''HAVE_FSYNC''@|$(HAVE_FSYNC)|g' \
 	      -e 's|@''HAVE_FTRUNCATE''@|$(HAVE_FTRUNCATE)|g' \
@ -1455,28 +1485,30 @@ unistd.h: unistd.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''HAVE_GETHOSTNAME''@|$(HAVE_GETHOSTNAME)|g' \
 	      -e 's|@''HAVE_GETLOGIN''@|$(HAVE_GETLOGIN)|g' \
 	      -e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
-	      -e 's|@''HAVE_GETUSERSHELL''@|$(HAVE_GETUSERSHELL)|g' \
 	      -e 's|@''HAVE_LCHOWN''@|$(HAVE_LCHOWN)|g' \
 	      -e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
 	      -e 's|@''HAVE_LINKAT''@|$(HAVE_LINKAT)|g' \
 	      -e 's|@''HAVE_PIPE2''@|$(HAVE_PIPE2)|g' \
 	      -e 's|@''HAVE_PREAD''@|$(HAVE_PREAD)|g' \
+	      -e 's|@''HAVE_PWRITE''@|$(HAVE_PWRITE)|g' \
 	      -e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
 	      -e 's|@''HAVE_READLINKAT''@|$(HAVE_READLINKAT)|g' \
 	      -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
 	      -e 's|@''HAVE_SYMLINK''@|$(HAVE_SYMLINK)|g' \
 	      -e 's|@''HAVE_SYMLINKAT''@|$(HAVE_SYMLINKAT)|g' \
+	      -e 's|@''HAVE_TTYNAME_R''@|$(HAVE_TTYNAME_R)|g' \
 	      -e 's|@''HAVE_UNLINKAT''@|$(HAVE_UNLINKAT)|g' \
 	      -e 's|@''HAVE_USLEEP''@|$(HAVE_USLEEP)|g' \
 	      -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
 	      -e 's|@''HAVE_DECL_GETLOGIN_R''@|$(HAVE_DECL_GETLOGIN_R)|g' \
+	      -e 's|@''HAVE_DECL_GETPAGESIZE''@|$(HAVE_DECL_GETPAGESIZE)|g' \
+	      -e 's|@''HAVE_DECL_GETUSERSHELL''@|$(HAVE_DECL_GETUSERSHELL)|g' \
 	      -e 's|@''HAVE_OS_H''@|$(HAVE_OS_H)|g' \
 	      -e 's|@''HAVE_SYS_PARAM_H''@|$(HAVE_SYS_PARAM_H)|g' \
 	      -e 's|@''REPLACE_CHOWN''@|$(REPLACE_CHOWN)|g' \
 	      -e 's|@''REPLACE_CLOSE''@|$(REPLACE_CLOSE)|g' \
 	      -e 's|@''REPLACE_DUP''@|$(REPLACE_DUP)|g' \
 	      -e 's|@''REPLACE_DUP2''@|$(REPLACE_DUP2)|g' \
-	      -e 's|@''REPLACE_FCHDIR''@|$(REPLACE_FCHDIR)|g' \
 	      -e 's|@''REPLACE_FCHOWNAT''@|$(REPLACE_FCHOWNAT)|g' \
 	      -e 's|@''REPLACE_GETCWD''@|$(REPLACE_GETCWD)|g' \
 	      -e 's|@''REPLACE_GETGROUPS''@|$(REPLACE_GETGROUPS)|g' \
@ -1486,10 +1518,12 @@ unistd.h: unistd.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	      -e 's|@''REPLACE_LINKAT''@|$(REPLACE_LINKAT)|g' \
 	      -e 's|@''REPLACE_LSEEK''@|$(REPLACE_LSEEK)|g' \
 	      -e 's|@''REPLACE_PREAD''@|$(REPLACE_PREAD)|g' \
+	      -e 's|@''REPLACE_PWRITE''@|$(REPLACE_PWRITE)|g' \
 	      -e 's|@''REPLACE_READLINK''@|$(REPLACE_READLINK)|g' \
 	      -e 's|@''REPLACE_RMDIR''@|$(REPLACE_RMDIR)|g' \
 	      -e 's|@''REPLACE_SLEEP''@|$(REPLACE_SLEEP)|g' \
 	      -e 's|@''REPLACE_SYMLINK''@|$(REPLACE_SYMLINK)|g' \
+	      -e 's|@''REPLACE_TTYNAME_R''@|$(REPLACE_TTYNAME_R)|g' \
 	      -e 's|@''REPLACE_UNLINK''@|$(REPLACE_UNLINK)|g' \
 	      -e 's|@''REPLACE_UNLINKAT''@|$(REPLACE_UNLINKAT)|g' \
 	      -e 's|@''REPLACE_USLEEP''@|$(REPLACE_USLEEP)|g' \
@ -1509,45 +1543,78 @@ EXTRA_DIST += unistd.in.h

 ## begin gnulib module unistr/base

+BUILT_SOURCES += $(LIBUNISTRING_UNISTR_H)

-EXTRA_DIST += unistr.h
+unistr.h: unistr.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/unistr.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+MOSTLYCLEANFILES += unistr.h unistr.h-t
+
+EXTRA_DIST += unistr.in.h

 ## end   gnulib module unistr/base

 ## begin gnulib module unistr/u8-mbtouc

-libgnu_la_SOURCES += unistr/u8-mbtouc.c unistr/u8-mbtouc-aux.c
+
+EXTRA_DIST += unistr/u8-mbtouc-aux.c unistr/u8-mbtouc.c
+
+EXTRA_libgnu_la_SOURCES += unistr/u8-mbtouc-aux.c unistr/u8-mbtouc.c

 ## end   gnulib module unistr/u8-mbtouc

 ## begin gnulib module unistr/u8-mbtouc-unsafe

-libgnu_la_SOURCES += unistr/u8-mbtouc-unsafe.c unistr/u8-mbtouc-unsafe-aux.c
+
+EXTRA_DIST += unistr/u8-mbtouc-unsafe-aux.c unistr/u8-mbtouc-unsafe.c
+
+EXTRA_libgnu_la_SOURCES += unistr/u8-mbtouc-unsafe-aux.c unistr/u8-mbtouc-unsafe.c

 ## end   gnulib module unistr/u8-mbtouc-unsafe

 ## begin gnulib module unistr/u8-mbtoucr

-libgnu_la_SOURCES += unistr/u8-mbtoucr.c
+
+EXTRA_DIST += unistr/u8-mbtoucr.c
+
+EXTRA_libgnu_la_SOURCES += unistr/u8-mbtoucr.c

 ## end   gnulib module unistr/u8-mbtoucr

 ## begin gnulib module unistr/u8-prev

-libgnu_la_SOURCES += unistr/u8-prev.c
+
+EXTRA_DIST += unistr/u8-prev.c
+
+EXTRA_libgnu_la_SOURCES += unistr/u8-prev.c

 ## end   gnulib module unistr/u8-prev

 ## begin gnulib module unistr/u8-uctomb

-libgnu_la_SOURCES += unistr/u8-uctomb.c unistr/u8-uctomb-aux.c
+
+EXTRA_DIST += unistr/u8-uctomb-aux.c unistr/u8-uctomb.c
+
+EXTRA_libgnu_la_SOURCES += unistr/u8-uctomb-aux.c unistr/u8-uctomb.c

 ## end   gnulib module unistr/u8-uctomb

 ## begin gnulib module unitypes

+BUILT_SOURCES += $(LIBUNISTRING_UNITYPES_H)

-EXTRA_DIST += unitypes.h
+unitypes.h: unitypes.in.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/unitypes.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+MOSTLYCLEANFILES += unitypes.h unitypes.h-t
+
+EXTRA_DIST += unitypes.in.h

 ## end   gnulib module unitypes

--- a/lib/arpa_inet.in.h
+++ b/lib/arpa_inet.in.h
@ -18,6 +18,10 @@

 #ifndef _GL_ARPA_INET_H

+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+
 /* Gnulib's sys/socket.h is responsible for pulling in winsock2.h etc
   under MinGW.
   But avoid namespace pollution on glibc systems.  */
@ -27,10 +31,6 @@

 #if @HAVE_ARPA_INET_H@

-# if __GNUC__ >= 3
-@PRAGMA_SYSTEM_HEADER@
-# endif
-
 /* The include_next requires a split double-inclusion guard.  */
 # @INCLUDE_NEXT@ @NEXT_ARPA_INET_H@

--- a/lib/canonicalize-lgpl.c
+++ b/lib/canonicalize-lgpl.c
@ -43,7 +43,7 @@
 # include <shlib-compat.h>
 #else
 # define SHLIB_COMPAT(lib, introduced, obsoleted) 0
-# define versioned_symbol(lib, local, symbol, version)
+# define versioned_symbol(lib, local, symbol, version) extern int dummy
 # define compat_symbol(lib, local, symbol, version)
 # define weak_alias(local, symbol)
 # define __canonicalize_file_name canonicalize_file_name
--- a/lib/config.charset
+++ b/lib/config.charset
@ -30,21 +30,21 @@
 # The current list of GNU canonical charset names is as follows.
 #
 #       name              MIME?             used by which systems
-#   ASCII, ANSI_X3.4-1968       glibc solaris freebsd netbsd darwin
-#   ISO-8859-1              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin
-#   ISO-8859-2              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin
-#   ISO-8859-3              Y   glibc solaris
+#   ASCII, ANSI_X3.4-1968       glibc solaris freebsd netbsd darwin cygwin
+#   ISO-8859-1              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
+#   ISO-8859-2              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
+#   ISO-8859-3              Y   glibc solaris cygwin
 #   ISO-8859-4              Y   osf solaris freebsd netbsd openbsd darwin
-#   ISO-8859-5              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin
-#   ISO-8859-6              Y   glibc aix hpux solaris
-#   ISO-8859-7              Y   glibc aix hpux irix osf solaris netbsd openbsd darwin
-#   ISO-8859-8              Y   glibc aix hpux osf solaris
-#   ISO-8859-9              Y   glibc aix hpux irix osf solaris darwin
-#   ISO-8859-13                 glibc netbsd openbsd darwin
-#   ISO-8859-14                 glibc
-#   ISO-8859-15                 glibc aix osf solaris freebsd netbsd openbsd darwin
+#   ISO-8859-5              Y   glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
+#   ISO-8859-6              Y   glibc aix hpux solaris cygwin
+#   ISO-8859-7              Y   glibc aix hpux irix osf solaris netbsd openbsd darwin cygwin
+#   ISO-8859-8              Y   glibc aix hpux osf solaris cygwin
+#   ISO-8859-9              Y   glibc aix hpux irix osf solaris darwin cygwin
+#   ISO-8859-13                 glibc netbsd openbsd darwin cygwin
+#   ISO-8859-14                 glibc cygwin
+#   ISO-8859-15                 glibc aix osf solaris freebsd netbsd openbsd darwin cygwin
 #   KOI8-R                  Y   glibc solaris freebsd netbsd openbsd darwin
-#   KOI8-U                  Y   glibc freebsd netbsd openbsd darwin
+#   KOI8-U                  Y   glibc freebsd netbsd openbsd darwin cygwin
 #   KOI8-T                      glibc
 #   CP437                       dos
 #   CP775                       dos
@ -61,7 +61,7 @@
 #   CP869                       dos
 #   CP874                       woe32 dos
 #   CP922                       aix
-#   CP932                       aix woe32 dos
+#   CP932                       aix cygwin woe32 dos
 #   CP943                       aix
 #   CP949                       osf darwin woe32 dos
 #   CP950                       woe32 dos
@ -71,7 +71,7 @@
 #   CP1129                      aix
 #   CP1131                      darwin
 #   CP1250                      woe32
-#   CP1251                      glibc solaris netbsd openbsd darwin woe32
+#   CP1251                      glibc solaris netbsd openbsd darwin cygwin woe32
 #   CP1252                      aix woe32
 #   CP1253                      woe32
 #   CP1254                      woe32
@ -80,19 +80,19 @@
 #   CP1257                      woe32
 #   GB2312                  Y   glibc aix hpux irix solaris freebsd netbsd darwin
 #   EUC-JP                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin
-#   EUC-KR                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin
+#   EUC-KR                  Y   glibc aix hpux irix osf solaris freebsd netbsd darwin cygwin
 #   EUC-TW                      glibc aix hpux irix osf solaris netbsd
-#   BIG5                    Y   glibc aix hpux osf solaris freebsd netbsd darwin
+#   BIG5                    Y   glibc aix hpux osf solaris freebsd netbsd darwin cygwin
 #   BIG5-HKSCS                  glibc solaris darwin
-#   GBK                         glibc aix osf solaris darwin woe32 dos
+#   GBK                         glibc aix osf solaris darwin cygwin woe32 dos
 #   GB18030                     glibc solaris netbsd darwin
 #   SHIFT_JIS               Y   hpux osf solaris freebsd netbsd darwin
 #   JOHAB                       glibc solaris woe32
-#   TIS-620                     glibc aix hpux osf solaris
+#   TIS-620                     glibc aix hpux osf solaris cygwin
 #   VISCII                  Y   glibc
 #   TCVN5712-1                  glibc
 #   ARMSCII-8                   glibc darwin
-#   GEORGIAN-PS                 glibc
+#   GEORGIAN-PS                 glibc cygwin
 #   PT154                       glibc
 #   HP-ROMAN8                   hpux
 #   HP-ARABIC8                  hpux
@ -102,7 +102,7 @@
 #   HP-KANA8                    hpux
 #   DEC-KANJI                   osf
 #   DEC-HANYU                   osf
-#   UTF-8                   Y   glibc aix hpux osf solaris netbsd darwin
+#   UTF-8                   Y   glibc aix hpux osf solaris netbsd darwin cygwin
 #
 # Note: Names which are not marked as being a MIME name should not be used in
 # Internet protocols for information interchange (mail, news, etc.).
--- a/lib/getaddrinfo.c
+++ b/lib/getaddrinfo.c
@ -351,10 +351,11 @@ freeaddrinfo (struct addrinfo *ai)
    }
 }

-int getnameinfo(const struct sockaddr *restrict sa, socklen_t salen,
-                char *restrict node, socklen_t nodelen,
-                char *restrict service, socklen_t servicelen,
-                int flags)
+int
+getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
+             char *restrict node, socklen_t nodelen,
+             char *restrict service, socklen_t servicelen,
+             int flags)
 {
 #ifdef WIN32_NATIVE
  if (use_win32_p ())
--- a/lib/gettext.h
+++ b/lib/gettext.h
@ -81,7 +81,7 @@
    ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
 # undef dcngettext
 # define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
-    ((void) (Category), dngettext(Domainname, Msgid1, Msgid2, N))
+    ((void) (Category), dngettext (Domainname, Msgid1, Msgid2, N))
 # undef textdomain
 # define textdomain(Domainname) ((const char *) (Domainname))
 # undef bindtextdomain
--- a/lib/libunistring.valgrind
+++ b/lib/libunistring.valgrind
@ -0,0 +1,9 @@
+# Suppress valgrind messages in an installed libunistring.
+
+# Suppress a valgrind message about use of uninitialized memory in freea().
+# This use is OK because it provides only a speedup.
+{
+    libunistring_freea
+    Memcheck:Cond
+    fun:libunistring_freea
+}
--- a/lib/localcharset.c
+++ b/lib/localcharset.c
@ -369,10 +369,9 @@ locale_charset (void)
  codeset = nl_langinfo (CODESET);

 #  ifdef __CYGWIN__
-  /* Cygwin 1.5.x does not have locales.  nl_langinfo (CODESET) always
-     returns "US-ASCII".  As long as this is not fixed, return the suffix
-     of the locale name from the environment variables (if present) or
-     the codepage as a number.  */
+  /* Cygwin < 1.7 does not have locales.  nl_langinfo (CODESET) always
+     returns "US-ASCII".  Return the suffix of the locale name from the
+     environment variables (if present) or the codepage as a number.  */
  if (codeset != NULL && strcmp (codeset, "US-ASCII") == 0)
    {
      const char *locale;
--- a/lib/locale.in.h
+++ b/lib/locale.in.h
@ -59,7 +59,9 @@ _GL_CXXALIAS_RPL (duplocale, locale_t, (locale_t locale));
 _GL_CXXALIAS_SYS (duplocale, locale_t, (locale_t locale));
 #  endif
 # endif
+# if @HAVE_DUPLOCALE@
 _GL_CXXALIASWARN (duplocale);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef duplocale
 # if HAVE_RAW_DECL_DUPLOCALE
--- a/lib/netdb.in.h
+++ b/lib/netdb.in.h
@ -22,11 +22,11 @@

 #ifndef _GL_NETDB_H

-#if @HAVE_NETDB_H@
-
-# if __GNUC__ >= 3
+#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
-# endif
+#endif
+
+#if @HAVE_NETDB_H@

 /* The include_next requires a split double-inclusion guard.  */
 # @INCLUDE_NEXT@ @NEXT_NETDB_H@
@ -41,6 +41,8 @@

 /* The definition of _GL_ARG_NONNULL is copied here.  */

+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
 /* Declarations for a platform that lacks <netdb.h>, or where it is
   incomplete.  */

@ -171,10 +173,10 @@ extern const char *gai_strerror (int ecode);
 /* Convert socket address to printable node and service names.
   For more details, see the POSIX:2001 specification
   <http://www.opengroup.org/susv3xsh/getnameinfo.html>.  */
-extern int getnameinfo(const struct sockaddr *restrict sa, socklen_t salen,
-                       char *restrict node, socklen_t nodelen,
-                       char *restrict service, socklen_t servicelen,
-                       int flags)
+extern int getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
+                        char *restrict node, socklen_t nodelen,
+                        char *restrict service, socklen_t servicelen,
+                        int flags)
     _GL_ARG_NONNULL ((1));
 # endif

@ -186,7 +188,33 @@ extern int getnameinfo(const struct sockaddr *restrict sa, socklen_t salen,
 #  define NI_NUMERICSERV 2
 # endif

-#endif /* @GNULIB_GETADDRINFO@ */
+#elif defined GNULIB_POSIXCHECK
+
+# undef getaddrinfo
+# if HAVE_RAW_DECL_GETADDRINFO
+_GL_WARN_ON_USE (getaddrinfo, "getaddrinfo is unportable - "
+                 "use gnulib module getaddrinfo for portability");
+# endif
+
+# undef freeaddrinfo
+# if HAVE_RAW_DECL_FREEADDRINFO
+_GL_WARN_ON_USE (freeaddrinfo, "freeaddrinfo is unportable - "
+                 "use gnulib module getaddrinfo for portability");
+# endif
+
+# undef gai_strerror
+# if HAVE_RAW_DECL_GAI_STRERROR
+_GL_WARN_ON_USE (gai_strerror, "gai_strerror is unportable - "
+                 "use gnulib module getaddrinfo for portability");
+# endif
+
+# undef getnameinfo
+# if HAVE_RAW_DECL_GETNAMEINFO
+_GL_WARN_ON_USE (getnameinfo, "getnameinfo is unportable - "
+                 "use gnulib module getaddrinfo for portability");
+# endif
+
+#endif

 #endif /* _GL_NETDB_H */
 #endif /* _GL_NETDB_H */
--- a/lib/netinet_in.in.h
+++ b/lib/netinet_in.in.h
@ -17,11 +17,11 @@

 #ifndef _GL_NETINET_IN_H

-#if @HAVE_NETINET_IN_H@
-
-# if __GNUC__ >= 3
+#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
-# endif
+#endif
+
+#if @HAVE_NETINET_IN_H@

 /* On many platforms, <netinet/in.h> assumes prior inclusion of
   <sys/types.h>.  */
--- a/lib/stdbool.in.h
+++ b/lib/stdbool.in.h
@ -50,6 +50,9 @@
         with this substitute.  With this substitute, only the values 0 and 1
         give the expected result when converted to _Bool' or 'bool'.

+       - C99 allows the use of (_Bool)0.0 in constant expressions, but
+         this substitute cannot always provide this property.
+
   Also, it is suggested that programs use 'bool' rather than '_Bool';
   this isn't required, but 'bool' is more common.  */

--- a/lib/stdint.in.h
+++ b/lib/stdint.in.h
@ -23,6 +23,10 @@

 #ifndef _GL_STDINT_H

+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+
 /* When including a system file that in turn includes <inttypes.h>,
   use the system <inttypes.h>, not our substitute.  This avoids
   problems with (for example) VMS, whose <sys/bitypes.h> includes
@ -49,9 +53,6 @@
     in <inttypes.h> would reinclude us, skipping our contents because
     _GL_STDINT_H is defined.
     The include_next requires a split double-inclusion guard.  */
-# if __GNUC__ >= 3
-@PRAGMA_SYSTEM_HEADER@
-# endif
 # @INCLUDE_NEXT@ @NEXT_STDINT_H@
 #endif

--- a/lib/stdio-write.c
+++ b/lib/stdio-write.c
@ -63,7 +63,6 @@
    }

 #  if !REPLACE_PRINTF_POSIX /* avoid collision with printf.c */
-#   if !DEPENDS_ON_LIBINTL /* avoid collision with intl/printf.c */
 int
 printf (const char *format, ...)
 {
@ -76,7 +75,6 @@ printf (const char *format, ...)

  return retval;
 }
-#   endif
 #  endif

 #  if !REPLACE_FPRINTF_POSIX /* avoid collision with fprintf.c */
--- a/lib/stdio.in.h
+++ b/lib/stdio.in.h
@ -63,6 +63,10 @@

 /* The definition of _GL_WARN_ON_USE is copied here.  */

+/* Macros for stringification.  */
+#define _GL_STDIO_STRINGIZE(token) #token
+#define _GL_STDIO_MACROEXPAND_AND_STRINGIZE(token) _GL_STDIO_STRINGIZE(token)
+

 #if @GNULIB_DPRINTF@
 # if @REPLACE_DPRINTF@
@ -322,30 +326,39 @@ _GL_CXXALIASWARN (fseek);
 #  undef fseek
 # endif
 # if @REPLACE_FSEEKO@
-/* Provide fseek, fseeko functions that are aware of a preceding
-   fflush(), and which detect pipes.  */
+/* Provide an fseeko function that is aware of a preceding fflush(), and which
+   detects pipes.  */
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef fseeko
 #   define fseeko rpl_fseeko
 #  endif
 _GL_FUNCDECL_RPL (fseeko, int, (FILE *fp, off_t offset, int whence)
                               _GL_ARG_NONNULL ((1)));
-#  if !@GNULIB_FSEEK@
-    /* In order to avoid that fseek gets defined as a macro here, the
-       developer can request the 'fseek' module.  */
-#   undef fseek
-#   define fseek rpl_fseek
-static inline int _GL_ARG_NONNULL ((1))
-rpl_fseek (FILE *fp, long offset, int whence)
-{
-  return fseeko (fp, offset, whence);
-}
-#  endif
 _GL_CXXALIAS_RPL (fseeko, int, (FILE *fp, off_t offset, int whence));
 # else
+#  if ! @HAVE_FSEEKO@
+_GL_FUNCDECL_SYS (fseeko, int, (FILE *fp, off_t offset, int whence)
+                               _GL_ARG_NONNULL ((1)));
+#  endif
 _GL_CXXALIAS_SYS (fseeko, int, (FILE *fp, off_t offset, int whence));
 # endif
 _GL_CXXALIASWARN (fseeko);
+# if (@REPLACE_FSEEKO@ || !@HAVE_FSEEKO@) && !@GNULIB_FSEEK@
+   /* Provide an fseek function that is consistent with fseeko.  */
+   /* In order to avoid that fseek gets defined as a macro here, the
+      developer can request the 'fseek' module.  */
+#  undef fseek
+#  define fseek rpl_fseek
+static inline int _GL_ARG_NONNULL ((1))
+rpl_fseek (FILE *fp, long offset, int whence)
+{
+#  if @REPLACE_FSEEKO@
+  return rpl_fseeko (fp, offset, whence);
+#  else
+  return fseeko (fp, offset, whence);
+#  endif
+}
+# endif
 #elif defined GNULIB_POSIXCHECK
 # define _GL_FSEEK_WARN /* Category 1, above.  */
 # undef fseek
@ -397,22 +410,30 @@ _GL_CXXALIASWARN (ftell);
 #   define ftello rpl_ftello
 #  endif
 _GL_FUNCDECL_RPL (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
-#  if !@GNULIB_FTELL@
-    /* In order to avoid that ftell gets defined as a macro here, the
-       developer can request the 'ftell' module.  */
-#   undef ftell
-#   define ftell rpl_ftell
-static inline long _GL_ARG_NONNULL ((1))
-rpl_ftell (FILE *f)
-{
-  return ftello (f);
-}
-#  endif
 _GL_CXXALIAS_RPL (ftello, off_t, (FILE *fp));
 # else
+#  if ! @HAVE_FTELLO@
+_GL_FUNCDECL_SYS (ftello, off_t, (FILE *fp) _GL_ARG_NONNULL ((1)));
+#  endif
 _GL_CXXALIAS_SYS (ftello, off_t, (FILE *fp));
 # endif
 _GL_CXXALIASWARN (ftello);
+# if (@REPLACE_FTELLO@ || !@HAVE_FTELLO@) && !@GNULIB_FTELL@
+   /* Provide an ftell function that is consistent with ftello.  */
+   /* In order to avoid that ftell gets defined as a macro here, the
+      developer can request the 'ftell' module.  */
+#  undef ftell
+#  define ftell rpl_ftell
+static inline long _GL_ARG_NONNULL ((1))
+rpl_ftell (FILE *f)
+{
+#  if @REPLACE_FTELLO@
+  return rpl_ftello (f);
+#  else
+  return ftello (f);
+#  endif
+}
+# endif
 #elif defined GNULIB_POSIXCHECK
 # define _GL_FTELL_WARN /* Category 1, above.  */
 # undef ftell
@ -516,7 +537,9 @@ _GL_FUNCDECL_SYS (getline, ssize_t,
 _GL_CXXALIAS_SYS (getline, ssize_t,
                  (char **lineptr, size_t *linesize, FILE *stream));
 # endif
+# if @HAVE_DECL_GETLINE@
 _GL_CXXALIASWARN (getline);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef getline
 # if HAVE_RAW_DECL_GETLINE
@ -621,16 +644,26 @@ _GL_WARN_ON_USE (popen, "popen is buggy on some platforms - "
 #if @GNULIB_PRINTF_POSIX@ || @GNULIB_PRINTF@
 # if (@GNULIB_PRINTF_POSIX@ && @REPLACE_PRINTF@) \
     || (@GNULIB_PRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && @GNULIB_STDIO_H_SIGPIPE@)
-#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  if defined __GNUC__
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 /* Don't break __attribute__((format(printf,M,N))).  */
-#   define printf __printf__
-#  endif
-#  define GNULIB_overrides_printf 1
+#    define printf __printf__
+#   endif
 _GL_FUNCDECL_RPL_1 (__printf__, int,
                    (const char *format, ...)
+                    __asm__ (@ASM_SYMBOL_PREFIX@
+                             _GL_STDIO_MACROEXPAND_AND_STRINGIZE(rpl_printf))
                    __attribute__ ((__format__ (__printf__, 1, 2)))
                    _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL_1 (printf, __printf__, int, (const char *format, ...));
+#  else
+_GL_FUNCDECL_RPL (printf, int,
+                  (const char *format, ...)
+                  __attribute__ ((__format__ (__printf__, 1, 2)))
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (printf, printf, int, (const char *format, ...));
+#  endif
+#  define GNULIB_overrides_printf 1
 # else
 _GL_CXXALIAS_SYS (printf, int, (const char *format, ...));
 # endif
@ -819,6 +852,25 @@ _GL_WARN_ON_USE (sprintf, "sprintf is not always POSIX compliant - "
                 "POSIX compliance");
 #endif

+#if @GNULIB_TMPFILE@
+# if @REPLACE_TMPFILE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define tmpfile rpl_tmpfile
+#  endif
+_GL_FUNCDECL_RPL (tmpfile, FILE *, (void));
+_GL_CXXALIAS_RPL (tmpfile, FILE *, (void));
+# else
+_GL_CXXALIAS_SYS (tmpfile, FILE *, (void));
+# endif
+_GL_CXXALIASWARN (tmpfile);
+#elif defined GNULIB_POSIXCHECK
+# undef tmpfile
+# if HAVE_RAW_DECL_TMPFILE
+_GL_WARN_ON_USE (tmpfile, "tmpfile is not usable on mingw - "
+                 "use gnulib module tmpfile for portability");
+# endif
+#endif
+
 #if @GNULIB_VASPRINTF@
 /* Write formatted output to a string dynamically allocated with malloc().
   If the memory allocation succeeds, store the address of the string in
@ -883,7 +935,10 @@ _GL_FUNCDECL_SYS (vdprintf, int, (int fd, const char *format, va_list args)
                                 __attribute__ ((__format__ (__printf__, 2, 0)))
                                 _GL_ARG_NONNULL ((2)));
 #  endif
-_GL_CXXALIAS_SYS (vdprintf, int, (int fd, const char *format, va_list args));
+/* Need to cast, because on Solaris, the third parameter will likely be
+                                                    __va_list args.  */
+_GL_CXXALIAS_SYS_CAST (vdprintf, int,
+                       (int fd, const char *format, va_list args));
 # endif
 _GL_CXXALIASWARN (vdprintf);
 #elif defined GNULIB_POSIXCHECK
@ -906,7 +961,11 @@ _GL_FUNCDECL_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args)
                                 _GL_ARG_NONNULL ((1, 2)));
 _GL_CXXALIAS_RPL (vfprintf, int, (FILE *fp, const char *format, va_list args));
 # else
-_GL_CXXALIAS_SYS (vfprintf, int, (FILE *fp, const char *format, va_list args));
+/* Need to cast, because on Solaris, the third parameter is
+                                                      __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vfprintf, int,
+                       (FILE *fp, const char *format, va_list args));
 # endif
 _GL_CXXALIASWARN (vfprintf);
 #endif
@ -932,7 +991,10 @@ _GL_FUNCDECL_RPL (vprintf, int, (const char *format, va_list args)
                                _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (vprintf, int, (const char *format, va_list args));
 # else
-_GL_CXXALIAS_SYS (vprintf, int, (const char *format, va_list args));
+/* Need to cast, because on Solaris, the second parameter is
+                                                          __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vprintf, int, (const char *format, va_list args));
 # endif
 _GL_CXXALIASWARN (vprintf);
 #endif
@ -988,8 +1050,11 @@ _GL_FUNCDECL_RPL (vsprintf, int,
 _GL_CXXALIAS_RPL (vsprintf, int,
                  (char *str, const char *format, va_list args));
 # else
-_GL_CXXALIAS_SYS (vsprintf, int,
-                  (char *str, const char *format, va_list args));
+/* Need to cast, because on Solaris, the third parameter is
+                                                       __va_list args
+   and GCC's fixincludes did not change this to __gnuc_va_list.  */
+_GL_CXXALIAS_SYS_CAST (vsprintf, int,
+                       (char *str, const char *format, va_list args));
 # endif
 _GL_CXXALIASWARN (vsprintf);
 #elif defined GNULIB_POSIXCHECK
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@ -67,10 +67,10 @@ struct random_data
 };
 #endif

-#if (@GNULIB_MKSTEMP@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__
+#if (@GNULIB_MKSTEMP@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__ && !((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
 /* On MacOS X 10.3, only <unistd.h> declares mkstemp.  */
 /* On Cygwin 1.7.1, only <unistd.h> declares getsubopt.  */
-/* But avoid namespace pollution on glibc systems.  */
+/* But avoid namespace pollution on glibc systems and native Windows.  */
 # include <unistd.h>
 #endif

@ -201,6 +201,22 @@ _GL_WARN_ON_USE (getsubopt, "getsubopt is unportable - "
 # endif
 #endif

+#if @GNULIB_GRANTPT@
+/* Change the ownership and access permission of the slave side of the
+   pseudo-terminal whose master side is specified by FD.  */
+# if !@HAVE_GRANTPT@
+_GL_FUNCDECL_SYS (grantpt, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (grantpt, int, (int fd));
+_GL_CXXALIASWARN (grantpt);
+#elif defined GNULIB_POSIXCHECK
+# undef grantpt
+# if HAVE_RAW_DECL_GRANTPT
+_GL_WARN_ON_USE (ptsname, "grantpt is not portable - "
+                 "use gnulib module grantpt for portability");
+# endif
+#endif
+
 #if @GNULIB_MALLOC_POSIX@
 # if !@HAVE_MALLOC_POSIX@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@ -313,6 +329,9 @@ _GL_WARN_ON_USE (mkostemps, "mkostemps is unportable - "
 _GL_FUNCDECL_RPL (mkstemp, int, (char * /*template*/) _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (mkstemp, int, (char * /*template*/));
 # else
+#  if ! @HAVE_MKSTEMP@
+_GL_FUNCDECL_SYS (mkstemp, int, (char * /*template*/) _GL_ARG_NONNULL ((1)));
+#  endif
 _GL_CXXALIAS_SYS (mkstemp, int, (char * /*template*/));
 # endif
 _GL_CXXALIASWARN (mkstemp);
@ -349,6 +368,22 @@ _GL_WARN_ON_USE (mkstemps, "mkstemps is unportable - "
 # endif
 #endif

+#if @GNULIB_PTSNAME@
+/* Return the pathname of the pseudo-terminal slave associated with
+   the master FD is open on, or NULL on errors.  */
+# if !@HAVE_PTSNAME@
+_GL_FUNCDECL_SYS (ptsname, char *, (int fd));
+# endif
+_GL_CXXALIAS_SYS (ptsname, char *, (int fd));
+_GL_CXXALIASWARN (ptsname);
+#elif defined GNULIB_POSIXCHECK
+# undef ptsname
+# if HAVE_RAW_DECL_PTSNAME
+_GL_WARN_ON_USE (ptsname, "ptsname is not portable - "
+                 "use gnulib module ptsname for portability");
+# endif
+#endif
+
 #if @GNULIB_PUTENV@
 # if @REPLACE_PUTENV@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@ -606,6 +641,22 @@ _GL_WARN_ON_USE (strtoull, "strtoull is unportable - "
 # endif
 #endif

+#if @GNULIB_UNLOCKPT@
+/* Unlock the slave side of the pseudo-terminal whose master side is specified
+   by FD, so that it can be opened.  */
+# if !@HAVE_UNLOCKPT@
+_GL_FUNCDECL_SYS (unlockpt, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (unlockpt, int, (int fd));
+_GL_CXXALIASWARN (unlockpt);
+#elif defined GNULIB_POSIXCHECK
+# undef unlockpt
+# if HAVE_RAW_DECL_UNLOCKPT
+_GL_WARN_ON_USE (ptsname, "unlockpt is not portable - "
+                 "use gnulib module unlockpt for portability");
+# endif
+#endif
+
 #if @GNULIB_UNSETENV@
 /* Remove the variable NAME from the environment.  */
 # if @REPLACE_UNSETENV@
--- a/lib/string.in.h
+++ b/lib/string.in.h
@ -66,6 +66,11 @@ _GL_FUNCDECL_RPL (memchr, void *, (void const *__s, int __c, size_t __n)
                                  _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (memchr, void *, (void const *__s, int __c, size_t __n));
 # else
+#  if ! @HAVE_MEMCHR@
+_GL_FUNCDECL_SYS (memchr, void *, (void const *__s, int __c, size_t __n)
+                                  __attribute__ ((__pure__))
+                                  _GL_ARG_NONNULL ((1)));
+#  endif
  /* On some systems, this function is defined as an overloaded function:
       extern "C" { const void * std::memchr (const void *, int, size_t); }
       extern "C++" { void * std::memchr (void *, int, size_t); }  */
@ -222,7 +227,7 @@ _GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - "
 /* Copy no more than N bytes of SRC to DST, returning a pointer past the
   last non-NUL byte written into DST.  */
 #if @GNULIB_STPNCPY@
-# if ! @HAVE_STPNCPY@
+# if @REPLACE_STPNCPY@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define stpncpy rpl_stpncpy
 #  endif
@ -234,6 +239,12 @@ _GL_CXXALIAS_RPL (stpncpy, char *,
                  (char *restrict __dst, char const *restrict __src,
                   size_t __n));
 # else
+#  if ! @HAVE_STPNCPY@
+_GL_FUNCDECL_SYS (stpncpy, char *,
+                  (char *restrict __dst, char const *restrict __src,
+                   size_t __n)
+                  _GL_ARG_NONNULL ((1, 2)));
+#  endif
 _GL_CXXALIAS_SYS (stpncpy, char *,
                  (char *restrict __dst, char const *restrict __src,
                   size_t __n));
@ -309,6 +320,28 @@ _GL_WARN_ON_USE (strdup, "strdup is unportable - "
 # endif
 #endif

+/* Append no more than N characters from SRC onto DEST.  */
+#if @GNULIB_STRNCAT@
+# if @REPLACE_STRNCAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strncat
+#   define strncat rpl_strncat
+#  endif
+_GL_FUNCDECL_RPL (strncat, char *, (char *dest, const char *src, size_t n)
+                                   _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (strncat, char *, (char *dest, const char *src, size_t n));
+# else
+_GL_CXXALIAS_SYS (strncat, char *, (char *dest, const char *src, size_t n));
+# endif
+_GL_CXXALIASWARN (strncat);
+#elif defined GNULIB_POSIXCHECK
+# undef strncat
+# if HAVE_RAW_DECL_STRNCAT
+_GL_WARN_ON_USE (strncat, "strncat is unportable - "
+                 "use gnulib module strncat for portability");
+# endif
+#endif
+
 /* Return a newly allocated copy of at most N bytes of STRING.  */
 #if @GNULIB_STRNDUP@
 # if @REPLACE_STRNDUP@
@ -339,12 +372,23 @@ _GL_WARN_ON_USE (strndup, "strndup is unportable - "
   MAXLEN bytes.  If no '\0' terminator is found in that many bytes,
   return MAXLEN.  */
 #if @GNULIB_STRNLEN@
-# if ! @HAVE_DECL_STRNLEN@
+# if @REPLACE_STRNLEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strnlen
+#   define strnlen rpl_strnlen
+#  endif
+_GL_FUNCDECL_RPL (strnlen, size_t, (char const *__string, size_t __maxlen)
+                                   __attribute__ ((__pure__))
+                                   _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strnlen, size_t, (char const *__string, size_t __maxlen));
+# else
+#  if ! @HAVE_DECL_STRNLEN@
 _GL_FUNCDECL_SYS (strnlen, size_t, (char const *__string, size_t __maxlen)
                                   __attribute__ ((__pure__))
                                   _GL_ARG_NONNULL ((1)));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (strnlen, size_t, (char const *__string, size_t __maxlen));
+# endif
 _GL_CXXALIASWARN (strnlen);
 #elif defined GNULIB_POSIXCHECK
 # undef strnlen
--- a/lib/sys_file.in.h
+++ b/lib/sys_file.in.h
@ -17,16 +17,17 @@
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

 /* Written by Richard W.M. Jones.  */
+
 #ifndef _GL_SYS_FILE_H

-# if __GNUC__ >= 3
+#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
-# endif
+#endif

 /* The include_next requires a split double-inclusion guard.  */
-# if @HAVE_SYS_FILE_H@
-#  @INCLUDE_NEXT@ @NEXT_SYS_FILE_H@
-# endif
+#if @HAVE_SYS_FILE_H@
+# @INCLUDE_NEXT@ @NEXT_SYS_FILE_H@
+#endif

 #ifndef _GL_SYS_FILE_H
 #define _GL_SYS_FILE_H
--- a/lib/sys_socket.in.h
+++ b/lib/sys_socket.in.h
@ -23,6 +23,10 @@
   It is intended to provide definitions and prototypes needed by an
   application.  */

+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+
 #if defined _GL_ALREADY_INCLUDING_SYS_SOCKET_H
 /* Special invocation convention:
   - On Cygwin 1.5.x we have a sequence of nested includes
@ -41,10 +45,6 @@

 # define _GL_ALREADY_INCLUDING_SYS_SOCKET_H

-# if __GNUC__ >= 3
-@PRAGMA_SYSTEM_HEADER@
-# endif
-
 /* On many platforms, <sys/socket.h> assumes prior inclusion of
   <sys/types.h>.  */
 # include <sys/types.h>
@ -183,13 +183,23 @@ rpl_fd_isset (SOCKET fd, fd_set * set)
 /* Wrap everything else to use libc file descriptors for sockets.  */

 #if @HAVE_WINSOCK2_H@ && !defined _GL_UNISTD_H
-# undef close
-# define close close_used_without_including_unistd_h
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  undef close
+#  define close close_used_without_including_unistd_h
+# else
+   _GL_WARN_ON_USE (close,
+                    "close() used without including <unistd.h>");
+# endif
 #endif

 #if @HAVE_WINSOCK2_H@ && !defined _GL_UNISTD_H
-# undef gethostname
-# define gethostname gethostname_used_without_including_unistd_h
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  undef gethostname
+#  define gethostname gethostname_used_without_including_unistd_h
+# else
+   _GL_WARN_ON_USE (gethostname,
+                    "gethostname() used without including <unistd.h>");
+# endif
 #endif

 #if @GNULIB_SOCKET@
@ -571,8 +581,13 @@ _GL_WARN_ON_USE (shutdown, "shutdown is not always POSIX compliant - "
 #endif

 #if @HAVE_WINSOCK2_H@
-# undef select
-# define select                select_used_without_including_sys_select_h
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  undef select
+#  define select select_used_without_including_sys_select_h
+# else
+   _GL_WARN_ON_USE (select,
+                    "select() used without including <sys/select.h>");
+# endif
 #endif

 #if @GNULIB_ACCEPT4@
--- a/lib/sys_stat.in.h
+++ b/lib/sys_stat.in.h
@ -56,7 +56,8 @@
 /* Before doing "#define mkdir rpl_mkdir" below, we need to include all
   headers that may declare mkdir().  */
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-# include <io.h>
+# include <io.h>     /* mingw32, mingw64 */
+# include <direct.h> /* mingw64 */
 #endif

 #ifndef S_IFMT
@ -390,7 +391,10 @@ _GL_WARN_ON_USE (futimens, "futimens is not portable - "
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define lchmod chmod
 #  endif
-_GL_CXXALIAS_RPL_1 (lchmod, chmod, int, (const char *filename, mode_t mode));
+/* Need to cast, because on mingw, the second parameter of chmod is
+                                                int mode.  */
+_GL_CXXALIAS_RPL_CAST_1 (lchmod, chmod, int,
+                         (const char *filename, mode_t mode));
 # else
 #  if 0 /* assume already declared */
 _GL_FUNCDECL_SYS (lchmod, int, (const char *filename, mode_t mode)
@ -398,7 +402,9 @@ _GL_FUNCDECL_SYS (lchmod, int, (const char *filename, mode_t mode)
 #  endif
 _GL_CXXALIAS_SYS (lchmod, int, (const char *filename, mode_t mode));
 # endif
+# if @HAVE_LCHMOD@
 _GL_CXXALIASWARN (lchmod);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef lchmod
 # if HAVE_RAW_DECL_LCHMOD
@ -427,7 +433,9 @@ _GL_CXXALIAS_RPL (lstat, int, (const char *name, struct stat *buf));
 # else
 _GL_CXXALIAS_SYS (lstat, int, (const char *name, struct stat *buf));
 # endif
+# if @HAVE_LSTAT@
 _GL_CXXALIASWARN (lstat);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef lstat
 # if HAVE_RAW_DECL_LSTAT
@ -448,7 +456,8 @@ _GL_CXXALIAS_RPL (mkdir, int, (char const *name, mode_t mode));
 #else
 /* mingw's _mkdir() function has 1 argument, but we pass 2 arguments.
   Additionally, it declares _mkdir (and depending on compile flags, an
-   alias mkdir), only in the nonstandard <io.h>, which is included above.  */
+   alias mkdir), only in the nonstandard includes <direct.h> and <io.h>,
+   which are included above.  */
 # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__

 static inline int
--- a/lib/time.in.h
+++ b/lib/time.in.h
@ -38,7 +38,7 @@
 # @INCLUDE_NEXT@ @NEXT_TIME_H@

 /* NetBSD 5.0 mis-defines NULL.  */
-#include <stddef.h>
+# include <stddef.h>

 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */

@ -46,10 +46,6 @@

 /* The definition of _GL_WARN_ON_USE is copied here.  */

-# ifdef __cplusplus
-extern "C" {
-# endif
-
 /* Some systems don't define struct timespec (e.g., AIX 4.1, Ultrix 4.3).
   Or they define it with the wrong member names or define it in <sys/time.h>
   (e.g., FreeBSD circa 1997).  */
@ -57,6 +53,11 @@ extern "C" {
 #  if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
 #   include <sys/time.h>
 #  else
+
+#   ifdef __cplusplus
+extern "C" {
+#   endif
+
 #   undef timespec
 #   define timespec rpl_timespec
 struct timespec
@ -64,11 +65,12 @@ struct timespec
  time_t tv_sec;
  long int tv_nsec;
 };
-#  endif
-# endif

-# ifdef __cplusplus
+#   ifdef __cplusplus
 }
+#   endif
+
+#  endif
 # endif

 /* Sleep for at least RQTP seconds unless interrupted,  If interrupted,
@ -85,6 +87,11 @@ _GL_FUNCDECL_RPL (nanosleep, int,
 _GL_CXXALIAS_RPL (nanosleep, int,
                  (struct timespec const *__rqtp, struct timespec *__rmtp));
 #  else
+#   if ! @HAVE_NANOSLEEP@
+_GL_FUNCDECL_SYS (nanosleep, int,
+                  (struct timespec const *__rqtp, struct timespec *__rmtp)
+                  _GL_ARG_NONNULL ((1)));
+#   endif
 _GL_CXXALIAS_SYS (nanosleep, int,
                  (struct timespec const *__rqtp, struct timespec *__rmtp));
 #  endif
@ -120,6 +127,11 @@ _GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
 _GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
                                             struct tm *restrict __result));
 #  else
+#   if ! @HAVE_LOCALTIME_R@
+_GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
+                                             struct tm *restrict __result)
+                                            _GL_ARG_NONNULL ((1, 2)));
+#   endif
 _GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
                                             struct tm *restrict __result));
 #  endif
@ -135,6 +147,11 @@ _GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
 _GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
                                          struct tm *restrict __result));
 #  else
+#   if ! @HAVE_LOCALTIME_R@
+_GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
+                                          struct tm *restrict __result)
+                                         _GL_ARG_NONNULL ((1, 2)));
+#   endif
 _GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
                                          struct tm *restrict __result));
 #  endif
@ -145,23 +162,15 @@ _GL_CXXALIASWARN (gmtime_r);
   the resulting broken-down time into TM.  See
   <http://www.opengroup.org/susv3xsh/strptime.html>.  */
 # if @GNULIB_STRPTIME@
-#  if @REPLACE_STRPTIME@
-#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
-#    undef strptime
-#    define strptime rpl_strptime
-#   endif
-_GL_FUNCDECL_RPL (strptime, char *, (char const *restrict __buf,
+#  if ! @HAVE_STRPTIME@
+_GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
                                     char const *restrict __format,
                                     struct tm *restrict __tm)
                                    _GL_ARG_NONNULL ((1, 2, 3)));
-_GL_CXXALIAS_RPL (strptime, char *, (char const *restrict __buf,
-                                     char const *restrict __format,
-                                     struct tm *restrict __tm));
-#  else
+#  endif
 _GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
                                     char const *restrict __format,
                                     struct tm *restrict __tm));
-#  endif
 _GL_CXXALIASWARN (strptime);
 # endif

@ -175,6 +184,9 @@ _GL_CXXALIASWARN (strptime);
 _GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm));
 #  else
+#   if ! @HAVE_TIMEGM@
+_GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
+#   endif
 _GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm));
 #  endif
 _GL_CXXALIASWARN (timegm);
@ -183,15 +195,25 @@ _GL_CXXALIASWARN (timegm);
 /* Encourage applications to avoid unsafe functions that can overrun
   buffers when given outlandish struct tm values.  Portable
   applications should use strftime (or even sprintf) instead.  */
-# if GNULIB_PORTCHECK
+# if defined GNULIB_POSIXCHECK
 #  undef asctime
-#  define asctime eschew_asctime
+_GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
 #  undef asctime_r
-#  define asctime_r eschew_asctime_r
+_GL_WARN_ON_USE (asctime, "asctime_r can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
 #  undef ctime
-#  define ctime eschew_ctime
+_GL_WARN_ON_USE (asctime, "ctime can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
+# endif
+# if defined GNULIB_POSIXCHECK
 #  undef ctime_r
-#  define ctime_r eschew_ctime_r
+_GL_WARN_ON_USE (asctime, "ctime_r can overrun buffers in some cases - "
+                 "better use strftime (or even sprintf) instead");
 # endif

 #endif
--- a/lib/time_r.c
+++ b/lib/time_r.c
@ -1,6 +1,6 @@
 /* Reentrant time functions like localtime_r.

-   Copyright (C) 2003, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006-2007, 2010 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published by
@ -22,8 +22,6 @@

 #include <time.h>

-#include <string.h>
-
 static struct tm *
 copy_tm_result (struct tm *dest, struct tm const *src)
 {
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@ -15,18 +15,42 @@
   along with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

-#ifndef _GL_UNISTD_H
-
 #if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
 #endif

+/* Special invocation convention:
+   - On mingw, several headers, including <winsock2.h>, include <unistd.h>,
+     but we need to ensure that both the system <unistd.h> and <winsock2.h>
+     are completely included before we replace gethostname.  */
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
+  && !defined _GL_WINSOCK2_H_WITNESS && defined _WINSOCK2_H
+/* <unistd.h> is being indirectly included for the first time from
+   <winsock2.h>; avoid declaring any overrides.  */
+# if @HAVE_UNISTD_H@
+#  @INCLUDE_NEXT@ @NEXT_UNISTD_H@
+# else
+#  error unexpected; report this to bug-gnulib@gnu.org
+# endif
+# define _GL_WINSOCK2_H_WITNESS
+
+/* Normal invocation.  */
+#elif !defined _GL_UNISTD_H
+
 /* The include_next requires a split double-inclusion guard.  */
 #if @HAVE_UNISTD_H@
 # @INCLUDE_NEXT@ @NEXT_UNISTD_H@
 #endif

-#ifndef _GL_UNISTD_H
+/* Get all possible declarations of gethostname().  */
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
+  && !defined _GL_INCLUDING_WINSOCK2_H
+# define _GL_INCLUDING_WINSOCK2_H
+# include <winsock2.h>
+# undef _GL_INCLUDING_WINSOCK2_H
+#endif
+
+#if !defined _GL_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
 #define _GL_UNISTD_H

 /* NetBSD 5.0 mis-defines NULL.  Also get size_t.  */
@ -62,7 +86,7 @@
 #endif

 #if (@GNULIB_WRITE@ || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
-     || @GNULIB_PREAD@ || defined GNULIB_POSIXCHECK)
+     || @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
 /* Get ssize_t.  */
 # include <sys/types.h>
 #endif
@ -73,47 +97,6 @@
 # include <getopt.h>
 #endif

-#if @GNULIB_GETHOSTNAME@
-/* Get all possible declarations of gethostname().  */
-# if @UNISTD_H_HAVE_WINSOCK2_H@
-#  include <winsock2.h>
-#  if !defined _GL_SYS_SOCKET_H
-#   undef socket
-#   define socket               socket_used_without_including_sys_socket_h
-#   undef connect
-#   define connect              connect_used_without_including_sys_socket_h
-#   undef accept
-#   define accept               accept_used_without_including_sys_socket_h
-#   undef bind
-#   define bind                 bind_used_without_including_sys_socket_h
-#   undef getpeername
-#   define getpeername          getpeername_used_without_including_sys_socket_h
-#   undef getsockname
-#   define getsockname          getsockname_used_without_including_sys_socket_h
-#   undef getsockopt
-#   define getsockopt           getsockopt_used_without_including_sys_socket_h
-#   undef listen
-#   define listen               listen_used_without_including_sys_socket_h
-#   undef recv
-#   define recv                 recv_used_without_including_sys_socket_h
-#   undef send
-#   define send                 send_used_without_including_sys_socket_h
-#   undef recvfrom
-#   define recvfrom             recvfrom_used_without_including_sys_socket_h
-#   undef sendto
-#   define sendto               sendto_used_without_including_sys_socket_h
-#   undef setsockopt
-#   define setsockopt           setsockopt_used_without_including_sys_socket_h
-#   undef shutdown
-#   define shutdown             shutdown_used_without_including_sys_socket_h
-#  endif
-#  if !defined _GL_SYS_SELECT_H
-#   undef select
-#   define select               select_used_without_including_sys_select_h
-#  endif
-# endif
-#endif
-
 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */

 /* The definition of _GL_ARG_NONNULL is copied here.  */
@ -121,6 +104,83 @@
 /* The definition of _GL_WARN_ON_USE is copied here.  */


+#if @GNULIB_GETHOSTNAME@
+/* Get all possible declarations of gethostname().  */
+# if @UNISTD_H_HAVE_WINSOCK2_H@
+#  if !defined _GL_SYS_SOCKET_H
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef socket
+#    define socket              socket_used_without_including_sys_socket_h
+#    undef connect
+#    define connect             connect_used_without_including_sys_socket_h
+#    undef accept
+#    define accept              accept_used_without_including_sys_socket_h
+#    undef bind
+#    define bind                bind_used_without_including_sys_socket_h
+#    undef getpeername
+#    define getpeername         getpeername_used_without_including_sys_socket_h
+#    undef getsockname
+#    define getsockname         getsockname_used_without_including_sys_socket_h
+#    undef getsockopt
+#    define getsockopt          getsockopt_used_without_including_sys_socket_h
+#    undef listen
+#    define listen              listen_used_without_including_sys_socket_h
+#    undef recv
+#    define recv                recv_used_without_including_sys_socket_h
+#    undef send
+#    define send                send_used_without_including_sys_socket_h
+#    undef recvfrom
+#    define recvfrom            recvfrom_used_without_including_sys_socket_h
+#    undef sendto
+#    define sendto              sendto_used_without_including_sys_socket_h
+#    undef setsockopt
+#    define setsockopt          setsockopt_used_without_including_sys_socket_h
+#    undef shutdown
+#    define shutdown            shutdown_used_without_including_sys_socket_h
+#   else
+     _GL_WARN_ON_USE (socket,
+                      "socket() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (connect,
+                      "connect() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (accept,
+                      "accept() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (bind,
+                      "bind() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (getpeername,
+                      "getpeername() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (getsockname,
+                      "getsockname() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (getsockopt,
+                      "getsockopt() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (listen,
+                      "listen() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (recv,
+                      "recv() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (send,
+                      "send() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (recvfrom,
+                      "recvfrom() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (sendto,
+                      "sendto() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (setsockopt,
+                      "setsockopt() used without including <sys/socket.h>");
+     _GL_WARN_ON_USE (shutdown,
+                      "shutdown() used without including <sys/socket.h>");
+#   endif
+#  endif
+#  if !defined _GL_SYS_SELECT_H
+#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#    undef select
+#    define select              select_used_without_including_sys_select_h
+#   else
+     _GL_WARN_ON_USE (select,
+                      "select() used without including <sys/select.h>");
+#   endif
+#  endif
+# endif
+#endif
+
+
 /* OS/2 EMX lacks these macros.  */
 #ifndef STDIN_FILENO
 # define STDIN_FILENO 0
@ -355,9 +415,8 @@ _GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
   Return 0 if successful, otherwise -1 and errno set.
   See the POSIX:2001 specification
   <http://www.opengroup.org/susv3xsh/fchdir.html>.  */
-# if @REPLACE_FCHDIR@
-_GL_FUNCDECL_RPL (fchdir, int, (int /*fd*/));
-_GL_CXXALIAS_RPL (fchdir, int, (int /*fd*/));
+# if ! @HAVE_FCHDIR@
+_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));

 /* Gnulib internal hooks needed to maintain the fchdir metadata.  */
 _GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
@ -366,9 +425,8 @@ _GL_EXTERN_C void _gl_unregister_fd (int fd);
 _GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
 _GL_EXTERN_C const char *_gl_directory_name (int fd);

-# else
-_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
 # endif
+_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
 _GL_CXXALIASWARN (fchdir);
 #elif defined GNULIB_POSIXCHECK
 # undef fchdir
@ -465,7 +523,9 @@ _GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
 _GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
 _GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
 # else
-_GL_CXXALIAS_SYS (getcwd, char *, (char *buf, size_t size));
+/* Need to cast, because on mingw, the second parameter is
+                                                   int size.  */
+_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
 # endif
 _GL_CXXALIASWARN (getcwd);
 #elif defined GNULIB_POSIXCHECK
@ -713,7 +773,9 @@ getpagesize ()
 /* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t.  */
 _GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
 # endif
+# if @HAVE_DECL_GETPAGESIZE@
 _GL_CXXALIASWARN (getpagesize);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef getpagesize
 # if HAVE_RAW_DECL_GETPAGESIZE
@ -726,7 +788,7 @@ _GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
 #if @GNULIB_GETUSERSHELL@
 /* Return the next valid login shell on the system, or NULL when the end of
   the list has been reached.  */
-# if !@HAVE_GETUSERSHELL@
+# if !@HAVE_DECL_GETUSERSHELL@
 _GL_FUNCDECL_SYS (getusershell, char *, (void));
 # endif
 _GL_CXXALIAS_SYS (getusershell, char *, (void));
@ -741,7 +803,7 @@ _GL_WARN_ON_USE (getusershell, "getusershell is unportable - "

 #if @GNULIB_GETUSERSHELL@
 /* Rewind to pointer that is advanced at each getusershell() call.  */
-# if !@HAVE_GETUSERSHELL@
+# if !@HAVE_DECL_GETUSERSHELL@
 _GL_FUNCDECL_SYS (setusershell, void, (void));
 # endif
 _GL_CXXALIAS_SYS (setusershell, void, (void));
@ -757,7 +819,7 @@ _GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
 #if @GNULIB_GETUSERSHELL@
 /* Free the pointer that is advanced at each getusershell() call and
   associated resources.  */
-# if !@HAVE_GETUSERSHELL@
+# if !@HAVE_DECL_GETUSERSHELL@
 _GL_FUNCDECL_SYS (endusershell, void, (void));
 # endif
 _GL_CXXALIAS_SYS (endusershell, void, (void));
@ -954,6 +1016,40 @@ _GL_WARN_ON_USE (pread, "pread is unportable - "
 #endif


+#if @GNULIB_PWRITE@
+/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
+   Return the number of bytes written if successful, otherwise
+   set errno and return -1.  0 indicates nothing written.  See the
+   POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/pwrite.html>.  */
+# if @REPLACE_PWRITE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define pwrite rpl_pwrite
+#  endif
+_GL_FUNCDECL_RPL (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset));
+# else
+#  if !@HAVE_PWRITE@
+_GL_FUNCDECL_SYS (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (pwrite, ssize_t,
+                  (int fd, const void *buf, size_t bufsize, off_t offset));
+# endif
+_GL_CXXALIASWARN (pwrite);
+#elif defined GNULIB_POSIXCHECK
+# undef pwrite
+# if HAVE_RAW_DECL_PWRITE
+_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
+                 "use gnulib module pwrite for portability");
+# endif
+#endif
+
+
 #if @GNULIB_READLINK@
 /* Read the contents of the symbolic link FILE and place the first BUFSIZE
   bytes of it into BUF.  Return the number of bytes placed into BUF if
@ -1099,6 +1195,36 @@ _GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
 #endif


+#if @GNULIB_TTYNAME_R@
+/* Store at most BUFLEN characters of the pathname of the terminal FD is
+   open on in BUF.  Return 0 on success, otherwise an error number.  */
+# if @REPLACE_TTYNAME_R@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ttyname_r
+#   define ttyname_r rpl_ttyname_r
+#  endif
+_GL_FUNCDECL_RPL (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen));
+# else
+#  if !@HAVE_TTYNAME_R@
+_GL_FUNCDECL_SYS (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (ttyname_r, int,
+                  (int fd, char *buf, size_t buflen));
+# endif
+_GL_CXXALIASWARN (ttyname_r);
+#elif defined GNULIB_POSIXCHECK
+# undef ttyname_r
+# if HAVE_RAW_DECL_TTYNAME_R
+_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
+                 "use gnulib module ttyname_r for portability");
+# endif
+#endif
+
+
 #if @GNULIB_UNLINK@
 # if @REPLACE_UNLINK@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@ -1187,7 +1313,10 @@ _GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
                                  _GL_ARG_NONNULL ((2)));
 _GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
 # else
-_GL_CXXALIAS_SYS (write, ssize_t, (int fd, const void *buf, size_t count));
+/* Need to cast, because on mingw, the third parameter is
+                                                             unsigned int count
+   and the return type is 'int'.  */
+_GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
 # endif
 _GL_CXXALIASWARN (write);
 #endif
--- a/lib/unistr.in.h
+++ b/lib/unistr.in.h
--- a/lib/unitypes.in.h
+++ b/lib/unitypes.in.h
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@ -148,8 +148,14 @@
 # define USE_SNPRINTF 1
 # if HAVE_DECL__SNWPRINTF
   /* On Windows, the function swprintf() has a different signature than
-      on Unix; we use the _snwprintf() function instead.  */
-#  define SNPRINTF _snwprintf
+      on Unix; we use the function _snwprintf() or - on mingw - snwprintf()
+      instead.  The mingw function snwprintf() has fewer bugs than the
+      MSVCRT function _snwprintf(), so prefer that.  */
+#  if defined __MINGW32__
+#   define SNPRINTF snwprintf
+#  else
+#   define SNPRINTF _snwprintf
+#  endif
 # else
   /* Unix.  */
 #  define SNPRINTF swprintf
@ -167,8 +173,15 @@
 #  define USE_SNPRINTF 0
 # endif
 # if HAVE_DECL__SNPRINTF
-   /* Windows.  */
-#  define SNPRINTF _snprintf
+   /* Windows.  The mingw function snprintf() has fewer bugs than the MSVCRT
+      function _snprintf(), so prefer that.  */
+#  if defined __MINGW32__
+#   define SNPRINTF snprintf
+    /* Here we need to call the native snprintf, not rpl_snprintf.  */
+#   undef snprintf
+#  else
+#   define SNPRINTF _snprintf
+#  endif
 # else
   /* Unix.  */
 #  define SNPRINTF snprintf
@ -194,7 +207,7 @@
 #undef remainder
 #define remainder rem

-#if !USE_SNPRINTF && !WIDE_CHAR_VERSION
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && !WIDE_CHAR_VERSION
 # if (HAVE_STRNLEN && !defined _AIX)
 #  define local_strnlen strnlen
 # else
@ -210,7 +223,7 @@ local_strnlen (const char *string, size_t maxlen)
 # endif
 #endif

-#if (!USE_SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T && (WIDE_CHAR_VERSION || DCHAR_IS_TCHAR)
+#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && WIDE_CHAR_VERSION) || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && !WIDE_CHAR_VERSION && DCHAR_IS_TCHAR)) && HAVE_WCHAR_T
 # if HAVE_WCSLEN
 #  define local_wcslen wcslen
 # else
@ -233,7 +246,7 @@ local_wcslen (const wchar_t *s)
 # endif
 #endif

-#if !USE_SNPRINTF && HAVE_WCHAR_T && WIDE_CHAR_VERSION
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && HAVE_WCHAR_T && WIDE_CHAR_VERSION
 # if HAVE_WCSNLEN
 #  define local_wcsnlen wcsnlen
 # else
@ -1474,6 +1487,258 @@ is_borderline (const char *digits, size_t precision)

 #endif

+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99
+
+/* Use a different function name, to make it possible that the 'wchar_t'
+   parametrization and the 'char' parametrization get compiled in the same
+   translation unit.  */
+# if WIDE_CHAR_VERSION
+#  define MAX_ROOM_NEEDED wmax_room_needed
+# else
+#  define MAX_ROOM_NEEDED max_room_needed
+# endif
+
+/* Returns the number of TCHAR_T units needed as temporary space for the result
+   of sprintf or SNPRINTF of a single conversion directive.  */
+static inline size_t
+MAX_ROOM_NEEDED (const arguments *ap, size_t arg_index, FCHAR_T conversion,
+                 arg_type type, int flags, size_t width, int has_precision,
+                 size_t precision, int pad_ourselves)
+{
+  size_t tmp_length;
+
+  switch (conversion)
+    {
+    case 'd': case 'i': case 'u':
+# if HAVE_LONG_LONG_INT
+      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+                          * 0.30103 /* binary -> decimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+# endif
+      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+                          * 0.30103 /* binary -> decimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+                          * 0.30103 /* binary -> decimal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Multiply by 2, as an estimate for FLAG_GROUP.  */
+      tmp_length = xsum (tmp_length, tmp_length);
+      /* Add 1, to account for a leading sign.  */
+      tmp_length = xsum (tmp_length, 1);
+      break;
+
+    case 'o':
+# if HAVE_LONG_LONG_INT
+      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+                          * 0.333334 /* binary -> octal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+# endif
+      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+                          * 0.333334 /* binary -> octal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+                          * 0.333334 /* binary -> octal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Add 1, to account for a leading sign.  */
+      tmp_length = xsum (tmp_length, 1);
+      break;
+
+    case 'x': case 'X':
+# if HAVE_LONG_LONG_INT
+      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+                          * 0.25 /* binary -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+# endif
+      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+        tmp_length =
+          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+                          * 0.25 /* binary -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+                          * 0.25 /* binary -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Add 2, to account for a leading sign or alternate form.  */
+      tmp_length = xsum (tmp_length, 2);
+      break;
+
+    case 'f': case 'F':
+      if (type == TYPE_LONGDOUBLE)
+        tmp_length =
+          (unsigned int) (LDBL_MAX_EXP
+                          * 0.30103 /* binary -> decimal */
+                          * 2 /* estimate for FLAG_GROUP */
+                         )
+          + 1 /* turn floor into ceil */
+          + 10; /* sign, decimal point etc. */
+      else
+        tmp_length =
+          (unsigned int) (DBL_MAX_EXP
+                          * 0.30103 /* binary -> decimal */
+                          * 2 /* estimate for FLAG_GROUP */
+                         )
+          + 1 /* turn floor into ceil */
+          + 10; /* sign, decimal point etc. */
+      tmp_length = xsum (tmp_length, precision);
+      break;
+
+    case 'e': case 'E': case 'g': case 'G':
+      tmp_length =
+        12; /* sign, decimal point, exponent etc. */
+      tmp_length = xsum (tmp_length, precision);
+      break;
+
+    case 'a': case 'A':
+      if (type == TYPE_LONGDOUBLE)
+        tmp_length =
+          (unsigned int) (LDBL_DIG
+                          * 0.831 /* decimal -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      else
+        tmp_length =
+          (unsigned int) (DBL_DIG
+                          * 0.831 /* decimal -> hexadecimal */
+                         )
+          + 1; /* turn floor into ceil */
+      if (tmp_length < precision)
+        tmp_length = precision;
+      /* Account for sign, decimal point etc. */
+      tmp_length = xsum (tmp_length, 12);
+      break;
+
+    case 'c':
+# if HAVE_WINT_T && !WIDE_CHAR_VERSION
+      if (type == TYPE_WIDE_CHAR)
+        tmp_length = MB_CUR_MAX;
+      else
+# endif
+        tmp_length = 1;
+      break;
+
+    case 's':
+# if HAVE_WCHAR_T
+      if (type == TYPE_WIDE_STRING)
+        {
+#  if WIDE_CHAR_VERSION
+          /* ISO C says about %ls in fwprintf:
+               "If the precision is not specified or is greater than the size
+                of the array, the array shall contain a null wide character."
+             So if there is a precision, we must not use wcslen.  */
+          const wchar_t *arg = ap->arg[arg_index].a.a_wide_string;
+
+          if (has_precision)
+            tmp_length = local_wcsnlen (arg, precision);
+          else
+            tmp_length = local_wcslen (arg);
+#  else
+          /* ISO C says about %ls in fprintf:
+               "If a precision is specified, no more than that many bytes are
+                written (including shift sequences, if any), and the array
+                shall contain a null wide character if, to equal the multibyte
+                character sequence length given by the precision, the function
+                would need to access a wide character one past the end of the
+                array."
+             So if there is a precision, we must not use wcslen.  */
+          /* This case has already been handled separately in VASNPRINTF.  */
+          abort ();
+#  endif
+        }
+      else
+# endif
+        {
+# if WIDE_CHAR_VERSION
+          /* ISO C says about %s in fwprintf:
+               "If the precision is not specified or is greater than the size
+                of the converted array, the converted array shall contain a
+                null wide character."
+             So if there is a precision, we must not use strlen.  */
+          /* This case has already been handled separately in VASNPRINTF.  */
+          abort ();
+# else
+          /* ISO C says about %s in fprintf:
+               "If the precision is not specified or greater than the size of
+                the array, the array shall contain a null character."
+             So if there is a precision, we must not use strlen.  */
+          const char *arg = ap->arg[arg_index].a.a_string;
+
+          if (has_precision)
+            tmp_length = local_strnlen (arg, precision);
+          else
+            tmp_length = strlen (arg);
+# endif
+        }
+      break;
+
+    case 'p':
+      tmp_length =
+        (unsigned int) (sizeof (void *) * CHAR_BIT
+                        * 0.25 /* binary -> hexadecimal */
+                       )
+          + 1 /* turn floor into ceil */
+          + 2; /* account for leading 0x */
+      break;
+
+    default:
+      abort ();
+    }
+
+  if (!pad_ourselves)
+    {
+# if ENABLE_UNISTDIO
+      /* Padding considers the number of characters, therefore the number of
+         elements after padding may be
+           > max (tmp_length, width)
+         but is certainly
+           <= tmp_length + width.  */
+      tmp_length = xsum (tmp_length, width);
+# else
+      /* Padding considers the number of elements, says POSIX.  */
+      if (tmp_length < width)
+        tmp_length = width;
+# endif
+    }
+
+  tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+
+  return tmp_length;
+}
+
+#endif
+
 DCHAR_T *
 VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
            const FCHAR_T *format, va_list args)
@ -2103,7 +2368,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                  }
              }
 #endif
-#if (!USE_SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
+#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
            else if (dp->conversion == 's'
 # if WIDE_CHAR_VERSION
                     && a.arg[dp->arg_index].type != TYPE_WIDE_STRING
@ -2592,8 +2857,16 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                          count = wctomb (cbuf, *arg);
 #   endif
                          if (count <= 0)
-                            /* Inconsistency.  */
-                            abort ();
+                            {
+                              /* Cannot convert.  */
+                              if (!(result == resultbuf || result == NULL))
+                                free (result);
+                              if (buf_malloced != NULL)
+                                free (buf_malloced);
+                              CLEANUP ();
+                              errno = EILSEQ;
+                              return NULL;
+                            }
                          ENSURE_ALLOCATION (xsum (length, count));
                          memcpy (result + length, cbuf, count);
                          length += count;
@ -2616,8 +2889,8 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                      length += n;
                    }
                }
-              }
 # endif
+              }
 #endif
 #if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
            else if ((dp->conversion == 'a' || dp->conversion == 'A')
@ -4301,11 +4574,11 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
              {
                arg_type type = a.arg[dp->arg_index].type;
                int flags = dp->flags;
-#if !USE_SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
                int has_width;
                size_t width;
 #endif
-#if !USE_SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
                int has_precision;
                size_t precision;
 #endif
@ -4330,7 +4603,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                TCHAR_T *tmp;
 #endif

-#if !USE_SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
                has_width = 0;
                width = 0;
                if (dp->width_start != dp->width_end)
@ -4364,7 +4637,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                  }
 #endif

-#if !USE_SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
+#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
                has_precision = 0;
                precision = 6;
                if (dp->precision_start != dp->precision_end)
@ -4437,246 +4710,10 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
 #if !USE_SNPRINTF
                /* Allocate a temporary buffer of sufficient size for calling
                   sprintf.  */
-                {
-                  switch (dp->conversion)
-                    {
-
-                    case 'd': case 'i': case 'u':
-# if HAVE_LONG_LONG_INT
-                      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
-                                          * 0.30103 /* binary -> decimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      else
-# endif
-                      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
-                                          * 0.30103 /* binary -> decimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      else
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
-                                          * 0.30103 /* binary -> decimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      if (tmp_length < precision)
-                        tmp_length = precision;
-                      /* Multiply by 2, as an estimate for FLAG_GROUP.  */
-                      tmp_length = xsum (tmp_length, tmp_length);
-                      /* Add 1, to account for a leading sign.  */
-                      tmp_length = xsum (tmp_length, 1);
-                      break;
-
-                    case 'o':
-# if HAVE_LONG_LONG_INT
-                      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
-                                          * 0.333334 /* binary -> octal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      else
-# endif
-                      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
-                                          * 0.333334 /* binary -> octal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      else
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
-                                          * 0.333334 /* binary -> octal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      if (tmp_length < precision)
-                        tmp_length = precision;
-                      /* Add 1, to account for a leading sign.  */
-                      tmp_length = xsum (tmp_length, 1);
-                      break;
-
-                    case 'x': case 'X':
-# if HAVE_LONG_LONG_INT
-                      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
-                                          * 0.25 /* binary -> hexadecimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      else
-# endif
-                      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned long) * CHAR_BIT
-                                          * 0.25 /* binary -> hexadecimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      else
-                        tmp_length =
-                          (unsigned int) (sizeof (unsigned int) * CHAR_BIT
-                                          * 0.25 /* binary -> hexadecimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      if (tmp_length < precision)
-                        tmp_length = precision;
-                      /* Add 2, to account for a leading sign or alternate form.  */
-                      tmp_length = xsum (tmp_length, 2);
-                      break;
-
-                    case 'f': case 'F':
-                      if (type == TYPE_LONGDOUBLE)
-                        tmp_length =
-                          (unsigned int) (LDBL_MAX_EXP
-                                          * 0.30103 /* binary -> decimal */
-                                          * 2 /* estimate for FLAG_GROUP */
-                                         )
-                          + 1 /* turn floor into ceil */
-                          + 10; /* sign, decimal point etc. */
-                      else
-                        tmp_length =
-                          (unsigned int) (DBL_MAX_EXP
-                                          * 0.30103 /* binary -> decimal */
-                                          * 2 /* estimate for FLAG_GROUP */
-                                         )
-                          + 1 /* turn floor into ceil */
-                          + 10; /* sign, decimal point etc. */
-                      tmp_length = xsum (tmp_length, precision);
-                      break;
-
-                    case 'e': case 'E': case 'g': case 'G':
-                      tmp_length =
-                        12; /* sign, decimal point, exponent etc. */
-                      tmp_length = xsum (tmp_length, precision);
-                      break;
-
-                    case 'a': case 'A':
-                      if (type == TYPE_LONGDOUBLE)
-                        tmp_length =
-                          (unsigned int) (LDBL_DIG
-                                          * 0.831 /* decimal -> hexadecimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      else
-                        tmp_length =
-                          (unsigned int) (DBL_DIG
-                                          * 0.831 /* decimal -> hexadecimal */
-                                         )
-                          + 1; /* turn floor into ceil */
-                      if (tmp_length < precision)
-                        tmp_length = precision;
-                      /* Account for sign, decimal point etc. */
-                      tmp_length = xsum (tmp_length, 12);
-                      break;
-
-                    case 'c':
-# if HAVE_WINT_T && !WIDE_CHAR_VERSION
-                      if (type == TYPE_WIDE_CHAR)
-                        tmp_length = MB_CUR_MAX;
-                      else
-# endif
-                        tmp_length = 1;
-                      break;
-
-                    case 's':
-# if HAVE_WCHAR_T
-                      if (type == TYPE_WIDE_STRING)
-                        {
-#  if WIDE_CHAR_VERSION
-                          /* ISO C says about %ls in fwprintf:
-                               "If the precision is not specified or is greater
-                                than the size of the array, the array shall
-                                contain a null wide character."
-                             So if there is a precision, we must not use
-                             wcslen.  */
-                          const wchar_t *arg =
-                            a.arg[dp->arg_index].a.a_wide_string;
-
-                          if (has_precision)
-                            tmp_length = local_wcsnlen (arg, precision);
-                          else
-                            tmp_length = local_wcslen (arg);
-#  else
-                          /* ISO C says about %ls in fprintf:
-                               "If a precision is specified, no more than that
-                                many bytes are written (including shift
-                                sequences, if any), and the array shall contain
-                                a null wide character if, to equal the
-                                multibyte character sequence length given by
-                                the precision, the function would need to
-                                access a wide character one past the end of the
-                                array."
-                             So if there is a precision, we must not use
-                             wcslen.  */
-                          /* This case has already been handled above.  */
-                          abort ();
-#  endif
-                        }
-                      else
-# endif
-                        {
-# if WIDE_CHAR_VERSION
-                          /* ISO C says about %s in fwprintf:
-                               "If the precision is not specified or is greater
-                                than the size of the converted array, the
-                                converted array shall contain a null wide
-                                character."
-                             So if there is a precision, we must not use
-                             strlen.  */
-                          /* This case has already been handled above.  */
-                          abort ();
-# else
-                          /* ISO C says about %s in fprintf:
-                               "If the precision is not specified or greater
-                                than the size of the array, the array shall
-                                contain a null character."
-                             So if there is a precision, we must not use
-                             strlen.  */
-                          const char *arg = a.arg[dp->arg_index].a.a_string;
-
-                          if (has_precision)
-                            tmp_length = local_strnlen (arg, precision);
-                          else
-                            tmp_length = strlen (arg);
-# endif
-                        }
-                      break;
-
-                    case 'p':
-                      tmp_length =
-                        (unsigned int) (sizeof (void *) * CHAR_BIT
-                                        * 0.25 /* binary -> hexadecimal */
-                                       )
-                          + 1 /* turn floor into ceil */
-                          + 2; /* account for leading 0x */
-                      break;
-
-                    default:
-                      abort ();
-                    }
-
-                  if (!pad_ourselves)
-                    {
-# if ENABLE_UNISTDIO
-                      /* Padding considers the number of characters, therefore
-                         the number of elements after padding may be
-                           > max (tmp_length, width)
-                         but is certainly
-                           <= tmp_length + width.  */
-                      tmp_length = xsum (tmp_length, width);
-# else
-                      /* Padding considers the number of elements,
-                         says POSIX.  */
-                      if (tmp_length < width)
-                        tmp_length = width;
-# endif
-                    }
-
-                  tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
-                }
+                tmp_length =
+                  MAX_ROOM_NEEDED (&a, dp->arg_index, dp->conversion, type,
+                                   flags, width, has_precision, precision,
+                                   pad_ourselves);

                if (tmp_length <= sizeof (tmpbuf) / sizeof (TCHAR_T))
                  tmp = tmpbuf;
@ -4916,6 +4953,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                      }
 #endif

+                    errno = 0;
                    switch (type)
                      {
                      case TYPE_SCHAR:
@ -5062,15 +5100,44 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                            /* Look at the snprintf() return value.  */
                            if (retcount < 0)
                              {
+# if !HAVE_SNPRINTF_RETVAL_C99
                                /* HP-UX 10.20 snprintf() is doubly deficient:
                                   It doesn't understand the '%n' directive,
                                   *and* it returns -1 (rather than the length
                                   that would have been required) when the
-                                   buffer is too small.  */
-                                size_t bigger_need =
-                                  xsum (xtimes (allocated, 2), 12);
-                                ENSURE_ALLOCATION (bigger_need);
-                                continue;
+                                   buffer is too small.
+                                   But a failure at this point can also come
+                                   from other reasons than a too small buffer,
+                                   such as an invalid wide string argument to
+                                   the %ls directive, or possibly an invalid
+                                   floating-point argument.  */
+                                size_t tmp_length =
+                                  MAX_ROOM_NEEDED (&a, dp->arg_index,
+                                                   dp->conversion, type, flags,
+                                                   width, has_precision,
+                                                   precision, pad_ourselves);
+
+                                if (maxlen < tmp_length)
+                                  {
+                                    /* Make more room.  But try to do through
+                                       this reallocation only once.  */
+                                    size_t bigger_need =
+                                      xsum (length,
+                                            xsum (tmp_length,
+                                                  TCHARS_PER_DCHAR - 1)
+                                            / TCHARS_PER_DCHAR);
+                                    /* And always grow proportionally.
+                                       (There may be several arguments, each
+                                       needing a little more room than the
+                                       previous one.)  */
+                                    size_t bigger_need2 =
+                                      xsum (xtimes (allocated, 2), 12);
+                                    if (bigger_need < bigger_need2)
+                                      bigger_need = bigger_need2;
+                                    ENSURE_ALLOCATION (bigger_need);
+                                    continue;
+                                  }
+# endif
                              }
                            else
                              count = retcount;
@ -5081,12 +5148,21 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                    /* Attempt to handle failure.  */
                    if (count < 0)
                      {
+                        /* SNPRINTF or sprintf failed.  Save and use the errno
+                           that it has set, if any.  */
+                        int saved_errno = errno;
+
                        if (!(result == resultbuf || result == NULL))
                          free (result);
                        if (buf_malloced != NULL)
                          free (buf_malloced);
                        CLEANUP ();
-                        errno = EINVAL;
+                        errno =
+                          (saved_errno != 0
+                           ? saved_errno
+                           : (dp->conversion == 'c' || dp->conversion == 's'
+                              ? EILSEQ
+                              : EINVAL));
                        return NULL;
                      }

@ -5422,6 +5498,8 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
                    length += count;
                    break;
                  }
+#undef pad_ourselves
+#undef prec_ourselves
              }
          }
      }
@ -5473,6 +5551,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
  }
 }

+#undef MAX_ROOM_NEEDED
 #undef TCHARS_PER_DCHAR
 #undef SNPRINTF
 #undef USE_SNPRINTF
--- a/lib/verify.h
+++ b/lib/verify.h
@ -69,13 +69,14 @@
     if the entity names are not disambiguated.  A workaround is to
     attach the current line number to the entity name:

-       #define GL_CONCAT0(x, y) x##y
-       #define GL_CONCAT(x, y) GL_CONCAT0 (x, y)
-       extern struct {...} * GL_CONCAT(dummy,__LINE__);
+       #define _GL_CONCAT0(x, y) x##y
+       #define _GL_CONCAT(x, y) _GL_CONCAT0 (x, y)
+       extern struct {...} * _GL_CONCAT (dummy, __LINE__);

     But this has the problem that two invocations of verify from
     within the same macro would collide, since the __LINE__ value
-     would be the same for both invocations.
+     would be the same for both invocations.  (The GCC __COUNTER__
+     macro solves this problem, but is not portable.)

     A solution is to use the sizeof operator.  It yields a number,
     getting rid of the identity of the type.  Declarations like
@ -103,20 +104,41 @@

       extern int (*dummy (void)) [sizeof (struct {...})];

+   * GCC warns about duplicate declarations of the dummy function if
+     -Wredundant_decls is used.  GCC 4.3 and later have a builtin
+     __COUNTER__ macro that can let us generate unique identifiers for
+     each dummy function, to suppress this warning.
+
   * This implementation exploits the fact that GCC does not warn about
     the last declaration mentioned above.  If a future version of GCC
     introduces a warning for this, the problem could be worked around
-     by using code specialized to GCC, e.g.,:
+     by using code specialized to GCC, just as __COUNTER__ is already
+     being used if available.

       #if 4 <= __GNUC__
-       # define verify(R) \
-           extern int (* verify_function__ (void)) \
-                      [__builtin_constant_p (R) && (R) ? 1 : -1]
+       # define verify(R) [another version to keep GCC happy]
       #endif

   * In C++, any struct definition inside sizeof is invalid.
     Use a template type to work around the problem.  */

+/* Concatenate two preprocessor tokens.  */
+# define _GL_CONCAT(x, y) _GL_CONCAT0 (x, y)
+# define _GL_CONCAT0(x, y) x##y
+
+/* _GL_COUNTER is an integer, preferably one that changes each time we
+   use it.  Use __COUNTER__ if it works, falling back on __LINE__
+   otherwise.  __LINE__ isn't perfect, but it's better than a
+   constant.  */
+# if defined __COUNTER__ && __COUNTER__ != __COUNTER__
+#  define _GL_COUNTER __COUNTER__
+# else
+#  define _GL_COUNTER __LINE__
+# endif
+
+/* Generate a symbol with the given prefix, making it unique if
+   possible.  */
+# define _GL_GENSYM(prefix) _GL_CONCAT (prefix, _GL_COUNTER)

 /* Verify requirement R at compile-time, as an integer constant expression.
   Return 1.  */
@ -135,6 +157,7 @@ template <int w>
 /* Verify requirement R at compile-time, as a declaration without a
   trailing ';'.  */

-# define verify(R) extern int (* verify_function__ (void)) [verify_true (R)]
+# define verify(R) \
+    extern int (* _GL_GENSYM (verify_function) (void)) [verify_true (R)]

 #endif
--- a/lib/wchar.in.h
+++ b/lib/wchar.in.h
@ -82,12 +82,16 @@
 /* The definition of _GL_WARN_ON_USE is copied here.  */


-/* Define wint_t.  (Also done in wctype.in.h.)  */
+/* Define wint_t and WEOF.  (Also done in wctype.in.h.)  */
 #if !@HAVE_WINT_T@ && !defined wint_t
 # define wint_t int
 # ifndef WEOF
 #  define WEOF -1
 # endif
+#else
+# ifndef WEOF
+#  define WEOF ((wint_t) -1)
+# endif
 #endif


@ -403,7 +407,7 @@ _GL_WARN_ON_USE (wcsnrtombs, "wcsnrtombs is unportable - "
 _GL_FUNCDECL_RPL (wcwidth, int, (wchar_t));
 _GL_CXXALIAS_RPL (wcwidth, int, (wchar_t));
 # else
-#  if !defined wcwidth && !@HAVE_DECL_WCWIDTH@
+#  if !@HAVE_DECL_WCWIDTH@
 /* wcwidth exists but is not declared.  */
 _GL_FUNCDECL_SYS (wcwidth, int, (wchar_t));
 #  endif
--- a/m4/absolute-header.m4
+++ b/m4/absolute-header.m4
@ -0,0 +1,77 @@
+# absolute-header.m4 serial 12
+dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Derek Price.
+
+# gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...)
+# ---------------------------------------
+# Find the absolute name of a header file, testing first if the header exists.
+# If the header were sys/inttypes.h, this macro would define
+# ABSOLUTE_SYS_INTTYPES_H to the `""' quoted absolute name of sys/inttypes.h
+# in config.h
+# (e.g. `#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use `""', not `<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+AC_DEFUN([gl_ABSOLUTE_HEADER],
+[AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_PREPROC_REQUIRE()dnl
+m4_foreach_w([gl_HEADER_NAME], [$1],
+  [AS_VAR_PUSHDEF([gl_absolute_header],
+                  [gl_cv_absolute_]m4_defn([gl_HEADER_NAME]))dnl
+  AC_CACHE_CHECK([absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+    m4_defn([gl_absolute_header]),
+    [AS_VAR_PUSHDEF([ac_header_exists],
+                    [ac_cv_header_]m4_defn([gl_HEADER_NAME]))dnl
+    AC_CHECK_HEADERS_ONCE(m4_defn([gl_HEADER_NAME]))dnl
+    if test AS_VAR_GET(ac_header_exists) = yes; then
+      gl_ABSOLUTE_HEADER_ONE(m4_defn([gl_HEADER_NAME]))
+    fi
+    AS_VAR_POPDEF([ac_header_exists])dnl
+    ])dnl
+  AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_defn([gl_HEADER_NAME])),
+                     ["AS_VAR_GET(gl_absolute_header)"],
+                     [Define this to an absolute name of <]m4_defn([gl_HEADER_NAME])[>.])
+  AS_VAR_POPDEF([gl_absolute_header])dnl
+])dnl
+])# gl_ABSOLUTE_HEADER
+
+# gl_ABSOLUTE_HEADER_ONE(HEADER)
+# ------------------------------
+# Like gl_ABSOLUTE_HEADER, except that:
+#   - it assumes that the header exists,
+#   - it uses the current CPPFLAGS,
+#   - it does not cache the result,
+#   - it is silent.
+AC_DEFUN([gl_ABSOLUTE_HEADER_ONE],
+[
+  AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote([$1])[[>]])])
+  dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
+  dnl that contain only a #include of other header files and no
+  dnl non-comment tokens of their own. This leads to a failure to
+  dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
+  dnl and others. The workaround is to force preservation of comments
+  dnl through option -C. This ensures all necessary #line directives
+  dnl are present. GCC supports option -C as well.
+  case "$host_os" in
+    aix*) gl_absname_cpp="$ac_cpp -C" ;;
+    *)    gl_absname_cpp="$ac_cpp" ;;
+  esac
+  dnl eval is necessary to expand gl_absname_cpp.
+  dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+  dnl so use subshell.
+  AS_VAR_SET([gl_cv_absolute_]AS_TR_SH([[$1]]),
+[`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+sed -n '\#/$1#{
+        s#.*"\(.*/$1\)".*#\1#
+        s#^/[^/]#//&#
+        p
+        q
+}'`])
+])
--- a/m4/arpa_inet_h.m4
+++ b/m4/arpa_inet_h.m4
@ -1,4 +1,4 @@
-# arpa_inet_h.m4 serial 7
+# arpa_inet_h.m4 serial 8
 dnl Copyright (C) 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -44,7 +44,7 @@ AC_DEFUN([gl_ARPA_INET_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])

 AC_DEFUN([gl_ARPA_INET_H_DEFAULTS],
--- a/m4/asm-underscore.m4
+++ b/m4/asm-underscore.m4
@ -0,0 +1,48 @@
+# asm-underscore.m4 serial 1
+dnl Copyright (C) 2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible. Based on as-underscore.m4 in GNU clisp.
+
+# gl_ASM_SYMBOL_PREFIX
+# Tests for the prefix of C symbols at the assembly language level and the
+# linker level. This prefix is either an underscore or empty. Defines the
+# C macro USER_LABEL_PREFIX to this prefix, and sets ASM_SYMBOL_PREFIX to
+# a stringified variant of this prefix.
+
+AC_DEFUN([gl_ASM_SYMBOL_PREFIX],
+[
+  dnl We don't use GCC's __USER_LABEL_PREFIX__ here, because
+  dnl 1. It works only for GCC.
+  dnl 2. It is incorrectly defined on some platforms, in some GCC versions.
+  AC_CACHE_CHECK(
+    [whether C symbols are prefixed with underscore at the linker level],
+    [gl_cv_prog_as_underscore],
+    [cat > conftest.c <<EOF
+#ifdef __cplusplus
+extern "C" int foo (void);
+#endif
+int foo(void) { return 0; }
+EOF
+     # Look for the assembly language name in the .s file.
+     AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c) >/dev/null 2>&1
+     if grep _foo conftest.s >/dev/null ; then
+       gl_cv_prog_as_underscore=yes
+     else
+       gl_cv_prog_as_underscore=no
+     fi
+     rm -f conftest*
+    ])
+  if test $gl_cv_prog_as_underscore = yes; then
+    USER_LABEL_PREFIX=_
+  else
+    USER_LABEL_PREFIX=
+  fi
+  AC_DEFINE_UNQUOTED([USER_LABEL_PREFIX], [$USER_LABEL_PREFIX],
+    [Define to the prefix of C symbols at the assembler and linker level,
+     either an underscore or empty.])
+  ASM_SYMBOL_PREFIX='"'${USER_LABEL_PREFIX}'"'
+  AC_SUBST([ASM_SYMBOL_PREFIX])
+])
--- a/m4/fcntl-o.m4
+++ b/m4/fcntl-o.m4
@ -1,5 +1,5 @@
 # fcntl-o.m4 serial 1
-dnl Copyright (C) 2006, 2009, 2010 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2010 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.
--- a/m4/getaddrinfo.m4
+++ b/m4/getaddrinfo.m4
@ -1,4 +1,4 @@
-# getaddrinfo.m4 serial 22
+# getaddrinfo.m4 serial 23
 dnl Copyright (C) 2004-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -96,7 +96,7 @@ AC_DEFUN([gl_PREREQ_GETADDRINFO], [
  AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
  AC_REQUIRE([gl_HOSTENT]) dnl for HOSTENT_LIB
  AC_REQUIRE([gl_SERVENT]) dnl for SERVENT_LIB
-  AC_REQUIRE([gl_INET_NTOP]) dnl for INET_NTOP_LIB
+  AC_REQUIRE([gl_FUNC_INET_NTOP]) dnl for INET_NTOP_LIB
  AC_REQUIRE([AC_C_RESTRICT])
  AC_REQUIRE([gl_SOCKET_FAMILIES])
  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 13
+# gnulib-common.m4 serial 20
 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -35,14 +35,71 @@ AC_DEFUN([gl_COMMON_BODY], [
   is a misnomer outside of parameter lists.  */
 #define _UNUSED_PARAMETER_ _GL_UNUSED
 ])
+  dnl Preparation for running test programs:
+  dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
+  dnl to /dev/tty, so they can be redirected to log files.  Such diagnostics
+  dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
+  LIBC_FATAL_STDERR_=1
+  export LIBC_FATAL_STDERR_
+])
+
+# gl_MODULE_INDICATOR_CONDITION
+# expands to a C preprocessor expression that evaluates to 1 or 0, depending
+# whether a gnulib module that has been requested shall be considered present
+# or not.
+AC_DEFUN([gl_MODULE_INDICATOR_CONDITION], [1])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
+# sets the shell variable that indicates the presence of the given module to
+# a C preprocessor expression that will evaluate to 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
+[
+  GNULIB_[]m4_translit([[$1]],
+    [abcdefghijklmnopqrstuvwxyz./-],
+    [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=gl_MODULE_INDICATOR_CONDITION
 ])

 # gl_MODULE_INDICATOR([modulename])
-# defines a C macro indicating the presence of the given module.
+# defines a C macro indicating the presence of the given module
+# in a location where it can be used.
+#                                             |  Value  |   Value   |
+#                                             | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules:          |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: |    0    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module not present at all:                  |    0    |     0     |
+# --------------------------------------------+---------+-----------+
 AC_DEFUN([gl_MODULE_INDICATOR],
 [
-  AC_DEFINE([GNULIB_]translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
-    [Define to 1 when using the gnulib module ]$1[.])
+  AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
+      [abcdefghijklmnopqrstuvwxyz./-],
+      [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
+    [gl_MODULE_INDICATOR_CONDITION],
+    [Define to a C preprocessor expression that evaluates to 1 or 0,
+     depending whether the gnulib module $1 shall be considered present.])
+])
+
+# gl_MODULE_INDICATOR_FOR_TESTS([modulename])
+# defines a C macro indicating the presence of the given module
+# in lib or tests. This is useful to determine whether the module
+# should be tested.
+#                                             |  Value  |   Value   |
+#                                             | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules:          |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module not present at all:                  |    0    |     0     |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
+[
+  AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
+      [abcdefghijklmnopqrstuvwxyz./-],
+      [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
+    [Define to 1 when the gnulib module $1 should be tested.])
 ])

 # m4_foreach_w
@ -81,6 +138,7 @@ m4_ifdef([AC_PROG_MKDIR_P], [
 # so that mixed use of GNU C and GNU C++ and mixed use of Sun C and Sun C++
 # works.
 # This definition can be removed once autoconf >= 2.62 can be assumed.
+m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.62]),[-1],[
 AC_DEFUN([AC_C_RESTRICT],
 [AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict],
  [ac_cv_c_restrict=no
@ -118,6 +176,7 @@ AC_DEFUN([AC_C_RESTRICT],
   *)  AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
 esac
 ])
+])

 # gl_BIGENDIAN
 # is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@ -148,6 +148,7 @@ AC_DEFUN([gl_INIT],
 [
  AM_CONDITIONAL([GL_COND_LIBTOOL], [true])
  gl_cond_libtool=true
+  gl_m4_base='m4'
  m4_pushdef([AC_LIBOBJ], m4_defn([gl_LIBOBJ]))
  m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gl_REPLACE_FUNCS]))
  m4_pushdef([AC_LIBSOURCES], m4_defn([gl_LIBSOURCES]))
@ -230,10 +231,10 @@ AC_DEFUN([gl_INIT],
  gl_FUNC_ICONV_OPEN_UTF
  # Code from module include_next:
  # Code from module inet_ntop:
-  gl_INET_NTOP
+  gl_FUNC_INET_NTOP
  gl_ARPA_INET_MODULE_INDICATOR([inet_ntop])
  # Code from module inet_pton:
-  gl_INET_PTON
+  gl_FUNC_INET_PTON
  gl_ARPA_INET_MODULE_INDICATOR([inet_pton])
  # Code from module inline:
  gl_INLINE
@ -348,16 +349,23 @@ AC_DEFUN([gl_INIT],
  # Code from module unistd:
  gl_UNISTD_H
  # Code from module unistr/base:
+  gl_LIBUNISTRING_LIBHEADER([0.9.2], [unistr.h])
  # Code from module unistr/u8-mbtouc:
  gl_MODULE_INDICATOR([unistr/u8-mbtouc])
+  gl_LIBUNISTRING_LIBSOURCE([0.9], [unistr/u8-mbtouc.c unistr/u8-mbtouc-aux.c])
  # Code from module unistr/u8-mbtouc-unsafe:
  gl_MODULE_INDICATOR([unistr/u8-mbtouc-unsafe])
+  gl_LIBUNISTRING_LIBSOURCE([0.9], [unistr/u8-mbtouc-unsafe.c unistr/u8-mbtouc-unsafe-aux.c])
  # Code from module unistr/u8-mbtoucr:
  gl_MODULE_INDICATOR([unistr/u8-mbtoucr])
+  gl_LIBUNISTRING_LIBSOURCE([0.9], [unistr/u8-mbtoucr.c])
  # Code from module unistr/u8-prev:
+  gl_LIBUNISTRING_LIBSOURCE([0.9], [unistr/u8-prev.c])
  # Code from module unistr/u8-uctomb:
  gl_MODULE_INDICATOR([unistr/u8-uctomb])
+  gl_LIBUNISTRING_LIBSOURCE([0.9], [unistr/u8-uctomb.c unistr/u8-uctomb-aux.c])
  # Code from module unitypes:
+  gl_LIBUNISTRING_LIBHEADER([0.9], [unitypes.h])
  # Code from module unused-parameter:
  # Code from module useless-if-before-free:
  # Code from module vasnprintf:
@ -420,6 +428,13 @@ AC_DEFUN([gl_INIT],
  m4_pushdef([gltests_LIBSOURCES_DIR], [])
  gl_COMMON
  gl_source_base='tests'
+changequote(,)dnl
+  gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
+changequote([, ])dnl
+  AC_SUBST([gltests_WITNESS])
+  gl_module_indicator_condition=$gltests_WITNESS
+  m4_pushdef([gl_MODULE_INDICATOR_CONDITION], [$gl_module_indicator_condition])
+  m4_popdef([gl_MODULE_INDICATOR_CONDITION])
  m4_ifval(gltests_LIBSOURCES_LIST, [
    m4_syscmd([test ! -d ]m4_defn([gltests_LIBSOURCES_DIR])[ ||
      for gl_file in ]gltests_LIBSOURCES_LIST[ ; do
@ -559,6 +574,7 @@ AC_DEFUN([gl_FILE_LIST], [
  lib/iconveh.h
  lib/inet_ntop.c
  lib/inet_pton.c
+  lib/libunistring.valgrind
  lib/localcharset.c
  lib/localcharset.h
  lib/locale.in.h
@ -612,7 +628,7 @@ AC_DEFUN([gl_FILE_LIST], [
  lib/time.in.h
  lib/time_r.c
  lib/unistd.in.h
-  lib/unistr.h
+  lib/unistr.in.h
  lib/unistr/u8-mbtouc-aux.c
  lib/unistr/u8-mbtouc-unsafe-aux.c
  lib/unistr/u8-mbtouc-unsafe.c
@ -621,7 +637,7 @@ AC_DEFUN([gl_FILE_LIST], [
  lib/unistr/u8-prev.c
  lib/unistr/u8-uctomb-aux.c
  lib/unistr/u8-uctomb.c
-  lib/unitypes.h
+  lib/unitypes.in.h
  lib/vasnprintf.c
  lib/vasnprintf.h
  lib/verify.h
@ -633,8 +649,10 @@ AC_DEFUN([gl_FILE_LIST], [
  lib/write.c
  lib/xsize.h
  m4/00gnulib.m4
+  m4/absolute-header.m4
  m4/alloca.m4
  m4/arpa_inet_h.m4
+  m4/asm-underscore.m4
  m4/autobuild.m4
  m4/byteswap.m4
  m4/canonicalize.m4
@ -668,6 +686,7 @@ AC_DEFUN([gl_FILE_LIST], [
  m4/lib-ld.m4
  m4/lib-link.m4
  m4/lib-prefix.m4
+  m4/libunistring-base.m4
  m4/libunistring.m4
  m4/localcharset.m4
  m4/locale-fr.m4
--- a/m4/iconv.m4
+++ b/m4/iconv.m4
@ -1,4 +1,4 @@
-# iconv.m4 serial 9 (gettext-0.18)
+# iconv.m4 serial 10 (gettext-0.18.1)
 dnl Copyright (C) 2000-2002, 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -170,7 +170,10 @@ int main ()
  AC_SUBST([LTLIBICONV])
 ])

-AC_DEFUN([AM_ICONV],
+dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to
+dnl avoid warnings like
+dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
+m4_version_prereq([2.64],[AC_DEFUN_ONCE],[AC_DEFUN])([AM_ICONV],
 [
  AM_ICONV_LINK
  if test "$am_cv_func_iconv" = yes; then
--- a/m4/iconv_h.m4
+++ b/m4/iconv_h.m4
@ -1,4 +1,4 @@
-# iconv_h.m4 serial 5
+# iconv_h.m4 serial 6
 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -24,7 +24,7 @@ AC_DEFUN([gl_ICONV_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_ICONV_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])

 AC_DEFUN([gl_ICONV_H_DEFAULTS],
--- a/m4/inet_ntop.m4
+++ b/m4/inet_ntop.m4
@ -1,10 +1,10 @@
-# inet_ntop.m4 serial 11
+# inet_ntop.m4 serial 12
 dnl Copyright (C) 2005, 2006, 2008, 2009, 2010 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.

-AC_DEFUN([gl_INET_NTOP],
+AC_DEFUN([gl_FUNC_INET_NTOP],
 [
  dnl Persuade Solaris <arpa/inet.h> to declare inet_ntop.
  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
--- a/m4/inet_pton.m4
+++ b/m4/inet_pton.m4
@ -1,10 +1,10 @@
-# inet_pton.m4 serial 9
+# inet_pton.m4 serial 10
 dnl Copyright (C) 2006, 2008, 2009, 2010 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.

-AC_DEFUN([gl_INET_PTON],
+AC_DEFUN([gl_FUNC_INET_PTON],
 [
  dnl Persuade Solaris <arpa/inet.h> to declare inet_pton.
  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
--- a/m4/lib-link.m4
+++ b/m4/lib-link.m4
@ -1,4 +1,4 @@
-# lib-link.m4 serial 20 (gettext-0.18)
+# lib-link.m4 serial 21 (gettext-0.18)
 dnl Copyright (C) 2001-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -74,7 +74,17 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],

  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIB[]NAME"
+    dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
+    dnl because these -l options might require -L options that are present in
+    dnl LIBS. -l options benefit only from the -L options listed before it.
+    dnl Otherwise, add it to the front of LIBS, because it may be a static
+    dnl library that depends on another static library that is present in LIBS.
+    dnl Static libraries benefit only from the static libraries listed after
+    dnl it.
+    case " $LIB[]NAME" in
+      *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
+      *)       LIBS="$LIB[]NAME $LIBS" ;;
+    esac
    AC_TRY_LINK([$3], [$4],
      [ac_cv_lib[]Name=yes],
      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
--- a/m4/libunistring-base.m4
+++ b/m4/libunistring-base.m4
@ -0,0 +1,143 @@
+# libunistring-base.m4 serial 2
+dnl Copyright (C) 2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paolo Bonzini and Bruno Haible.
+
+dnl gl_LIBUNISTRING_LIBSOURCE([VERSION], [SourceFile])
+dnl Declares that SourceFile should be compiled, unless we are linking
+dnl with libunistring and its version is >= the given VERSION.
+dnl SourceFile should be relative to the lib directory and end in '.c'.
+dnl This macro is to be used for public libunistring API, not for
+dnl undocumented API.
+dnl
+dnl You have to bump the VERSION argument to the next projected version
+dnl number each time you make a change that affects the behaviour of the
+dnl functions defined in SourceFile (even if SourceFile itself does not
+dnl change).
+
+AC_DEFUN([gl_LIBUNISTRING_LIBSOURCE],
+[
+  AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE])
+  dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from
+  dnl gl_LIBUNISTRING_CORE if that macro has been run.
+  if gl_LIBUNISTRING_VERSION_CMP([$1])
+  then
+    m4_foreach_w([gl_source_file], [$2],
+      [AC_LIBOBJ(m4_bpatsubst(m4_defn([gl_source_file]), [\.c$], []))
+      ])
+  fi
+])
+
+dnl gl_LIBUNISTRING_LIBHEADER([VERSION], [HeaderFile])
+dnl Declares that HeaderFile should be created, unless we are linking
+dnl with libunistring and its version is >= the given VERSION.
+dnl HeaderFile should be relative to the lib directory and end in '.h'.
+dnl Prepares for substituting LIBUNISTRING_HEADERFILE (to HeaderFile or empty).
+dnl
+dnl When we are linking with the already installed libunistring and its version
+dnl is < VERSION, we create HeaderFile here, because we may compile functions
+dnl (via gl_LIBUNISTRING_LIBSOURCE above) that are not contained in the
+dnl installed version.
+dnl When we are linking with the already installed libunistring and its version
+dnl is > VERSION, we don't create HeaderFile here: it could cause compilation
+dnl errors in other libunistring header files if some types are missing.
+dnl
+dnl You have to bump the VERSION argument to the next projected version
+dnl number each time you make a non-comment change to the HeaderFile.
+
+AC_DEFUN([gl_LIBUNISTRING_LIBHEADER],
+[
+  AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE])
+  dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from
+  dnl gl_LIBUNISTRING_CORE if that macro has been run.
+  if gl_LIBUNISTRING_VERSION_CMP([$1])
+  then
+    LIBUNISTRING_[]AS_TR_CPP([$2])='$2'
+  else
+    LIBUNISTRING_[]AS_TR_CPP([$2])=
+  fi
+  AC_SUBST([LIBUNISTRING_]AS_TR_CPP([$2]))
+])
+
+dnl Miscellaneous preparations/initializations.
+
+AC_DEFUN([gl_LIBUNISTRING_LIB_PREPARE],
+[
+  AC_REQUIRE([AC_PROG_AWK])
+
+dnl Sed expressions to extract the parts of a version number.
+changequote(,)
+gl_libunistring_sed_extract_major='/^[0-9]/{s/^\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_minor='/^[0-9][0-9]*[.][0-9]/{s/^[0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+gl_libunistring_sed_extract_subminor='/^[0-9][0-9]*[.][0-9][0-9]*[.][0-9]/{s/^[0-9]*[.][0-9]*[.]\([0-9]*\).*/\1/p;q;}
+i\
+0
+q
+'
+changequote([,])
+
+  if test "$HAVE_LIBUNISTRING" = yes; then
+    LIBUNISTRING_VERSION_MAJOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_major"`
+    LIBUNISTRING_VERSION_MINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_minor"`
+    LIBUNISTRING_VERSION_SUBMINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_subminor"`
+  fi
+])
+
+dnl gl_LIBUNISTRING_VERSION_CMP([VERSION])
+dnl Expands to a shell statement that evaluates to true if LIBUNISTRING_VERSION
+dnl is less than the VERSION argument.
+AC_DEFUN([gl_LIBUNISTRING_VERSION_CMP],
+[ { test "$HAVE_LIBUNISTRING" != yes \
+    || {
+         dnl AS_LITERAL_IF exists and works fine since autoconf-2.59 at least.
+         AS_LITERAL_IF([$1],
+           [dnl This is the optimized variant, that assumes the argument is a literal:
+            m4_pushdef([requested_version_major],
+              [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^\([0-9]*\).*], [\1]), [])])
+            m4_pushdef([requested_version_minor],
+              [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^[0-9]*[.]\([0-9]*\).*], [\1]), [$1])])
+            m4_pushdef([requested_version_subminor],
+              [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^[0-9]*[.][0-9]*[.]\([0-9]*\).*], [\1]), [$1])])
+            test $LIBUNISTRING_VERSION_MAJOR -lt requested_version_major \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq requested_version_major \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt requested_version_minor \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq requested_version_minor \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt requested_version_subminor
+                         }
+                    }
+               }
+            m4_popdef([requested_version_subminor])
+            m4_popdef([requested_version_minor])
+            m4_popdef([requested_version_major])
+           ],
+           [dnl This is the unoptimized variant:
+            requested_version_major=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_major"`
+            requested_version_minor=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_minor"`
+            requested_version_subminor=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_subminor"`
+            test $LIBUNISTRING_VERSION_MAJOR -lt $requested_version_major \
+            || { test $LIBUNISTRING_VERSION_MAJOR -eq $requested_version_major \
+                 && { test $LIBUNISTRING_VERSION_MINOR -lt $requested_version_minor \
+                      || { test $LIBUNISTRING_VERSION_MINOR -eq $requested_version_minor \
+                           && test $LIBUNISTRING_VERSION_SUBMINOR -lt $requested_version_subminor
+                         }
+                    }
+               }
+           ])
+       }
+  }
+])
+
+dnl gl_LIBUNISTRING_ARG_OR_ZERO([ARG], [ORIG]) expands to ARG if it is not the
+dnl same as ORIG, otherwise to 0.
+m4_define([gl_LIBUNISTRING_ARG_OR_ZERO], [m4_if([$1], [$2], [0], [$1])])
--- a/m4/libunistring.m4
+++ b/m4/libunistring.m4
@ -1,5 +1,5 @@
-# libunistring.m4 serial 1
-dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+# libunistring.m4 serial 6
+dnl Copyright (C) 2009-2010 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.
@ -7,22 +7,61 @@ dnl with or without modifications, as long as this notice is preserved.
 dnl gl_LIBUNISTRING
 dnl Searches for an installed libunistring.
 dnl If found, it sets and AC_SUBSTs HAVE_LIBUNISTRING=yes and the LIBUNISTRING
-dnl and LTLIBUNISTRING variables and augments the CPPFLAGS variable, and
-dnl #defines HAVE_LIBUNISTRING to 1. Otherwise, it sets and AC_SUBSTs
-dnl HAVE_LIBUNISTRING=no and LIBUNINSTRING and LTLIBUNISTRING to empty.
+dnl and LTLIBUNISTRING variables, sets the LIBUNISTRING_VERSION variable, and
+dnl augments the CPPFLAGS variable, and #defines HAVE_LIBUNISTRING to 1.
+dnl Otherwise, it sets and AC_SUBSTs HAVE_LIBUNISTRING=no and LIBUNISTRING and
+dnl LTLIBUNISTRING to empty.

 AC_DEFUN([gl_LIBUNISTRING],
 [
-  dnl First, try to link without -liconv. libunistring often depends on
-  dnl libiconv, but we don't know (and often don't need to know) where
-  dnl libiconv is installed.
-  AC_LIB_HAVE_LINKFLAGS([unistring], [],
-    [#include <uniconv.h>], [u8_strconv_from_locale((char*)0);],
-    [no, consider installing GNU libunistring])
-  if test "$ac_cv_libunistring" != yes; then
-    dnl Second try, with -liconv.
-    AC_REQUIRE([AM_ICONV])
-    if test -n "$LIBICONV"; then
+  AC_BEFORE([$0], [gl_LIBUNISTRING_LIBSOURCE])
+  AC_BEFORE([$0], [gl_LIBUNISTRING_LIBHEADER])
+  AC_BEFORE([$0], [gl_LIBUNISTRING_LIB_PREPARE])
+
+  m4_ifdef([gl_LIBUNISTRING_OPTIONAL],
+    [
+      AC_MSG_CHECKING([whether included libunistring is requested])
+      AC_ARG_WITH([included-libunistring],
+        [  --with-included-libunistring  use the libunistring parts included here],
+        [gl_libunistring_force_included=$withval],
+        [gl_libunistring_force_included=no])
+      AC_MSG_RESULT([$gl_libunistring_force_included])
+      gl_libunistring_use_included="$gl_libunistring_force_included"
+      if test "$gl_libunistring_use_included" = yes; then
+        dnl Assume that libunistring is not installed until some other macro
+        dnl explicitly invokes gl_LIBUNISTRING_CORE.
+        if test -z "$HAVE_LIBUNISTRING"; then
+          HAVE_LIBUNISTRING=no
+        fi
+        LIBUNISTRING=
+        LTLIBUNISTRING=
+      else
+        gl_LIBUNISTRING_CORE
+        if test $HAVE_LIBUNISTRING = no; then
+          gl_libunistring_use_included=yes
+          LIBUNISTRING=
+          LTLIBUNISTRING=
+        fi
+      fi
+    ],
+    [gl_LIBUNISTRING_CORE])
+])
+
+AC_DEFUN([gl_LIBUNISTRING_CORE],
+[
+  AC_REQUIRE([AM_ICONV])
+  if test -n "$LIBICONV"; then
+    dnl First, try to link without -liconv. libunistring often depends on
+    dnl libiconv, but we don't know (and often don't need to know) where
+    dnl libiconv is installed.
+    AC_LIB_HAVE_LINKFLAGS([unistring], [],
+      [#include <uniconv.h>], [u8_strconv_from_locale((char*)0);],
+      [no, trying again together with libiconv])
+    if test "$ac_cv_libunistring" != yes; then
+      dnl Second try, with -liconv.
+      dnl We have to erase the cached result of the first AC_LIB_HAVE_LINKFLAGS
+      dnl invocation, otherwise the second one will not be run.
+      unset ac_cv_libunistring
      glus_save_LIBS="$LIBS"
      LIBS="$LIBS $LIBICONV"
      AC_LIB_HAVE_LINKFLAGS([unistring], [],
@ -30,8 +69,60 @@ AC_DEFUN([gl_LIBUNISTRING],
        [no, consider installing GNU libunistring])
      if test -n "$LIBUNISTRING"; then
        LIBUNISTRING="$LIBUNISTRING $LIBICONV"
+        LTLIBUNISTRING="$LTLIBUNISTRING $LTLIBICONV"
      fi
      LIBS="$glus_save_LIBS"
    fi
+  else
+    AC_LIB_HAVE_LINKFLAGS([unistring], [],
+      [#include <uniconv.h>], [u8_strconv_from_locale((char*)0);],
+      [no, consider installing GNU libunistring])
+  fi
+  if test $HAVE_LIBUNISTRING = yes; then
+    dnl Determine the installed version.
+    AC_CACHE_CHECK([for libunistring version], [gl_cv_libunistring_version],
+      [AC_COMPUTE_INT([gl_libunistring_hexversion],
+                      [_LIBUNISTRING_VERSION],
+                      [#include <unistring/version.h>])
+       dnl Versions <= 0.9.3 had a hexversion of 0x0009.
+       dnl Use other tests to distinguish them.
+       if test $gl_libunistring_hexversion = 9; then
+         dnl Version 0.9.2 introduced the header <unistring/cdefs.h>.
+         AC_TRY_COMPILE([#include <unistring/cdefs.h>], ,
+           [gl_cv_libunistring_version092=true],
+           [gl_cv_libunistring_version092=false]);
+         if $gl_cv_libunistring_version092; then
+           dnl Version 0.9.3 changed a comment in <unistr.h>.
+           gl_ABSOLUTE_HEADER_ONE([unistr.h])
+           if test -n "$gl_cv_absolute_unistr_h" \
+              && grep 'Copy no more than N units of SRC to DEST.  Return a pointer' $gl_cv_absolute_unistr_h > /dev/null; then
+             dnl Detected version 0.9.3.
+             gl_libunistring_hexversion=2307
+           else
+             dnl Detected version 0.9.2.
+             gl_libunistring_hexversion=2306
+           fi
+         else
+           dnl Version 0.9.1 introduced the type casing_suffix_context_t.
+           AC_TRY_COMPILE([#include <unicase.h>
+                           casing_suffix_context_t ct;], ,
+             [gl_cv_libunistring_version091=true],
+             [gl_cv_libunistring_version091=false])
+           if $gl_cv_libunistring_version091; then
+             dnl Detected version 0.9.1.
+             gl_libunistring_hexversion=2305
+           else
+             dnl Detected version 0.9.
+             gl_libunistring_hexversion=2304
+           fi
+         fi
+       fi
+       dnl Transform into the usual major.minor.subminor notation.
+       gl_libunistring_major=`expr $gl_libunistring_hexversion / 65536`
+       gl_libunistring_minor=`expr $gl_libunistring_hexversion / 256 % 256`
+       gl_libunistring_subminor=`expr $gl_libunistring_hexversion % 256`
+       gl_cv_libunistring_version="$gl_libunistring_major.$gl_libunistring_minor.$gl_libunistring_subminor"
+      ])
+    LIBUNISTRING_VERSION="$gl_cv_libunistring_version"
  fi
 ])
--- a/m4/locale_h.m4
+++ b/m4/locale_h.m4
@ -1,5 +1,5 @@
-# locale_h.m4 serial 9
-dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
+# locale_h.m4 serial 10
+dnl Copyright (C) 2007, 2009-2010 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.
@ -78,9 +78,9 @@ AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_LOCALE_H_DEFAULTS],
--- a/m4/mbrtowc.m4
+++ b/m4/mbrtowc.m4
@ -1,4 +1,4 @@
-# mbrtowc.m4 serial 16
+# mbrtowc.m4 serial 17
 dnl Copyright (C) 2001-2002, 2004-2005, 2008-2010 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
@ -11,38 +11,39 @@ AC_DEFUN([gl_FUNC_MBRTOWC],

  AC_REQUIRE([AC_TYPE_MBSTATE_T])
  gl_MBSTATE_T_BROKEN
-  if test $REPLACE_MBSTATE_T = 1; then
-    REPLACE_MBRTOWC=1
-  fi
+
  AC_CHECK_FUNCS_ONCE([mbrtowc])
  if test $ac_cv_func_mbrtowc = no; then
    HAVE_MBRTOWC=0
-  fi
-  if test $HAVE_MBRTOWC != 0 && test $REPLACE_MBRTOWC != 1; then
-    gl_MBRTOWC_NULL_ARG
-    gl_MBRTOWC_RETVAL
-    gl_MBRTOWC_NUL_RETVAL
-    case "$gl_cv_func_mbrtowc_null_arg" in
-      *yes) ;;
-      *) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],
-           [Define if the mbrtowc function has the NULL string argument bug.])
-         REPLACE_MBRTOWC=1
-         ;;
-    esac
-    case "$gl_cv_func_mbrtowc_retval" in
-      *yes) ;;
-      *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
-           [Define if the mbrtowc function returns a wrong return value.])
-         REPLACE_MBRTOWC=1
-         ;;
-    esac
-    case "$gl_cv_func_mbrtowc_nul_retval" in
-      *yes) ;;
-      *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
-           [Define if the mbrtowc function does not return 0 for a NUL character.])
-         REPLACE_MBRTOWC=1
-         ;;
-    esac
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBRTOWC=1
+    else
+      gl_MBRTOWC_NULL_ARG
+      gl_MBRTOWC_RETVAL
+      gl_MBRTOWC_NUL_RETVAL
+      case "$gl_cv_func_mbrtowc_null_arg" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],
+             [Define if the mbrtowc function has the NULL string argument bug.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_retval" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
+             [Define if the mbrtowc function returns a wrong return value.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_nul_retval" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
+             [Define if the mbrtowc function does not return 0 for a NUL character.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+    fi
  fi
  if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
    gl_REPLACE_WCHAR_H
--- a/m4/mbsinit.m4
+++ b/m4/mbsinit.m4
@ -1,5 +1,5 @@
-# mbsinit.m4 serial 3
-dnl Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
+# mbsinit.m4 serial 4
+dnl Copyright (C) 2008, 2010 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.
@ -10,12 +10,14 @@ AC_DEFUN([gl_FUNC_MBSINIT],

  AC_REQUIRE([AC_TYPE_MBSTATE_T])
  gl_MBSTATE_T_BROKEN
-  if test $REPLACE_MBSTATE_T = 1; then
-    REPLACE_MBSINIT=1
-  fi
+
  AC_CHECK_FUNCS_ONCE([mbsinit])
  if test $ac_cv_func_mbsinit = no; then
    HAVE_MBSINIT=0
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBSINIT=1
+    fi
  fi
  if test $HAVE_MBSINIT = 0 || test $REPLACE_MBSINIT = 1; then
    gl_REPLACE_WCHAR_H
--- a/m4/memchr.m4
+++ b/m4/memchr.m4
@ -1,4 +1,4 @@
-# memchr.m4 serial 7
+# memchr.m4 serial 8
 dnl Copyright (C) 2002-2004, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -13,12 +13,7 @@ AC_DEFUN_ONCE([gl_FUNC_MEMCHR],

  dnl These days, we assume memchr is present.  But just in case...
  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
-  AC_REPLACE_FUNCS([memchr])
-  if test $ac_cv_func_memchr = no; then
-    gl_PREREQ_MEMCHR
-    REPLACE_MEMCHR=1
-  fi
-
+  AC_CHECK_FUNCS_ONCE([memchr])
  if test $ac_cv_func_memchr = yes; then
    # Detect platform-specific bugs in some versions of glibc:
    # memchr should not dereference anything with length 0
@ -73,10 +68,14 @@ AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
      [dnl Be pessimistic for now.
       gl_cv_func_memchr_works="guessing no"])])
    if test "$gl_cv_func_memchr_works" != yes; then
-      gl_PREREQ_MEMCHR
      REPLACE_MEMCHR=1
-      AC_LIBOBJ([memchr])
    fi
+  else
+    HAVE_MEMCHR=0
+  fi
+  if test $HAVE_MEMCHR = 0 || test $REPLACE_MEMCHR = 1; then
+    AC_LIBOBJ([memchr])
+    gl_PREREQ_MEMCHR
  fi
 ])

--- a/m4/netdb_h.m4
+++ b/m4/netdb_h.m4
@ -1,4 +1,4 @@
-# netdb_h.m4 serial 6
+# netdb_h.m4 serial 9
 dnl Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -10,28 +10,23 @@ AC_DEFUN([gl_HEADER_NETDB],
  AC_CHECK_HEADERS_ONCE([netdb.h])
  gl_CHECK_NEXT_HEADERS([netdb.h])
  if test $ac_cv_header_netdb_h = yes; then
-    AC_COMPILE_IFELSE(
-      [AC_LANG_PROGRAM([[
-         #include <netdb.h>
-         struct addrinfo a;
-         int b = EAI_OVERFLOW;
-         int c = AI_NUMERICSERV;
-       ]])],
-      [NETDB_H=''], [NETDB_H='netdb.h'])
    HAVE_NETDB_H=1
  else
-    NETDB_H='netdb.h'
    HAVE_NETDB_H=0
  fi
  AC_SUBST([HAVE_NETDB_H])
-  AC_SUBST([NETDB_H])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <netdb.h>]],
+    [getaddrinfo freeaddrinfo gai_strerror getnameinfo])
 ])

 AC_DEFUN([gl_NETDB_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_NETDB_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])

 AC_DEFUN([gl_NETDB_H_DEFAULTS],
--- a/m4/stddef_h.m4
+++ b/m4/stddef_h.m4
@ -1,5 +1,5 @@
 dnl A placeholder for POSIX 2008 <stddef.h>, for platforms that have issues.
-# stddef_h.m4 serial 1
+# stddef_h.m4 serial 2
 dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -33,7 +33,7 @@ AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])

 AC_DEFUN([gl_STDDEF_H_DEFAULTS],
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@ -1,4 +1,4 @@
-# stdio_h.m4 serial 26
+# stdio_h.m4 serial 31
 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -8,6 +8,7 @@ AC_DEFUN([gl_STDIO_H],
 [
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([gl_ASM_SYMBOL_PREFIX])
  gl_CHECK_NEXT_HEADERS([stdio.h])
  dnl No need to create extra modules for these functions. Everyone who uses
  dnl <stdio.h> likely needs them.
@ -37,16 +38,16 @@ AC_DEFUN([gl_STDIO_H],
  dnl guaranteed by C89.
  gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
    ]], [dprintf fpurge fseeko ftello getdelim getline popen renameat
-    snprintf vdprintf vsnprintf])
+    snprintf tmpfile vdprintf vsnprintf])
 ])

 AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_STDIO_H_DEFAULTS],
@ -83,6 +84,7 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS],
  GNULIB_SNPRINTF=0;             AC_SUBST([GNULIB_SNPRINTF])
  GNULIB_SPRINTF_POSIX=0;        AC_SUBST([GNULIB_SPRINTF_POSIX])
  GNULIB_STDIO_H_SIGPIPE=0;      AC_SUBST([GNULIB_STDIO_H_SIGPIPE])
+  GNULIB_TMPFILE=0;              AC_SUBST([GNULIB_TMPFILE])
  GNULIB_VASPRINTF=0;            AC_SUBST([GNULIB_VASPRINTF])
  GNULIB_VDPRINTF=0;             AC_SUBST([GNULIB_VDPRINTF])
  GNULIB_VFPRINTF=0;             AC_SUBST([GNULIB_VFPRINTF])
@ -99,6 +101,8 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS],
  HAVE_DECL_SNPRINTF=1;          AC_SUBST([HAVE_DECL_SNPRINTF])
  HAVE_DECL_VSNPRINTF=1;         AC_SUBST([HAVE_DECL_VSNPRINTF])
  HAVE_DPRINTF=1;                AC_SUBST([HAVE_DPRINTF])
+  HAVE_FSEEKO=1;                 AC_SUBST([HAVE_FSEEKO])
+  HAVE_FTELLO=1;                 AC_SUBST([HAVE_FTELLO])
  HAVE_RENAMEAT=1;               AC_SUBST([HAVE_RENAMEAT])
  HAVE_VASPRINTF=1;              AC_SUBST([HAVE_VASPRINTF])
  HAVE_VDPRINTF=1;               AC_SUBST([HAVE_VDPRINTF])
@ -125,6 +129,7 @@ AC_DEFUN([gl_STDIO_H_DEFAULTS],
  REPLACE_SNPRINTF=0;            AC_SUBST([REPLACE_SNPRINTF])
  REPLACE_SPRINTF=0;             AC_SUBST([REPLACE_SPRINTF])
  REPLACE_STDIO_WRITE_FUNCS=0;   AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
+  REPLACE_TMPFILE=0;             AC_SUBST([REPLACE_TMPFILE])
  REPLACE_VASPRINTF=0;           AC_SUBST([REPLACE_VASPRINTF])
  REPLACE_VDPRINTF=0;            AC_SUBST([REPLACE_VDPRINTF])
  REPLACE_VFPRINTF=0;            AC_SUBST([REPLACE_VFPRINTF])
--- a/m4/stdlib_h.m4
+++ b/m4/stdlib_h.m4
@ -1,4 +1,4 @@
-# stdlib_h.m4 serial 23
+# stdlib_h.m4 serial 28
 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -33,18 +33,19 @@ AC_DEFUN([gl_STDLIB_H],
 #if HAVE_RANDOM_H
 # include <random.h>
 #endif
-    ]], [atoll canonicalize_file_name getloadavg getsubopt mkdtemp
-    mkostemp mkostemps mkstemp mkstemps random_r initstat_r srandom_r
-    setstate_r realpath rpmatch setenv strtod strtoll strtoull unsetenv])
+    ]], [atoll canonicalize_file_name getloadavg getsubopt grantpt mkdtemp
+    mkostemp mkostemps mkstemp mkstemps ptsname random_r initstat_r srandom_r
+    setstate_r realpath rpmatch setenv strtod strtoll strtoull unlockpt
+    unsetenv])
 ])

 AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_STDLIB_H_DEFAULTS],
@ -54,12 +55,14 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
  GNULIB_CANONICALIZE_FILE_NAME=0;  AC_SUBST([GNULIB_CANONICALIZE_FILE_NAME])
  GNULIB_GETLOADAVG=0;    AC_SUBST([GNULIB_GETLOADAVG])
  GNULIB_GETSUBOPT=0;     AC_SUBST([GNULIB_GETSUBOPT])
+  GNULIB_GRANTPT=0;       AC_SUBST([GNULIB_GRANTPT])
  GNULIB_MALLOC_POSIX=0;  AC_SUBST([GNULIB_MALLOC_POSIX])
  GNULIB_MKDTEMP=0;       AC_SUBST([GNULIB_MKDTEMP])
  GNULIB_MKOSTEMP=0;      AC_SUBST([GNULIB_MKOSTEMP])
  GNULIB_MKOSTEMPS=0;     AC_SUBST([GNULIB_MKOSTEMPS])
  GNULIB_MKSTEMP=0;       AC_SUBST([GNULIB_MKSTEMP])
  GNULIB_MKSTEMPS=0;      AC_SUBST([GNULIB_MKSTEMPS])
+  GNULIB_PTSNAME=0;       AC_SUBST([GNULIB_PTSNAME])
  GNULIB_PUTENV=0;        AC_SUBST([GNULIB_PUTENV])
  GNULIB_RANDOM_R=0;      AC_SUBST([GNULIB_RANDOM_R])
  GNULIB_REALLOC_POSIX=0; AC_SUBST([GNULIB_REALLOC_POSIX])
@ -69,6 +72,7 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
  GNULIB_STRTOD=0;        AC_SUBST([GNULIB_STRTOD])
  GNULIB_STRTOLL=0;       AC_SUBST([GNULIB_STRTOLL])
  GNULIB_STRTOULL=0;      AC_SUBST([GNULIB_STRTOULL])
+  GNULIB_UNLOCKPT=0;      AC_SUBST([GNULIB_UNLOCKPT])
  GNULIB_UNSETENV=0;      AC_SUBST([GNULIB_UNSETENV])
  dnl Assume proper GNU behavior unless another module says otherwise.
  HAVE_ATOLL=1;              AC_SUBST([HAVE_ATOLL])
@ -76,11 +80,14 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
  HAVE_CANONICALIZE_FILE_NAME=1;  AC_SUBST([HAVE_CANONICALIZE_FILE_NAME])
  HAVE_DECL_GETLOADAVG=1;    AC_SUBST([HAVE_DECL_GETLOADAVG])
  HAVE_GETSUBOPT=1;          AC_SUBST([HAVE_GETSUBOPT])
+  HAVE_GRANTPT=1;            AC_SUBST([HAVE_GRANTPT])
  HAVE_MALLOC_POSIX=1;       AC_SUBST([HAVE_MALLOC_POSIX])
  HAVE_MKDTEMP=1;            AC_SUBST([HAVE_MKDTEMP])
  HAVE_MKOSTEMP=1;           AC_SUBST([HAVE_MKOSTEMP])
  HAVE_MKOSTEMPS=1;          AC_SUBST([HAVE_MKOSTEMPS])
+  HAVE_MKSTEMP=1;            AC_SUBST([HAVE_MKSTEMP])
  HAVE_MKSTEMPS=1;           AC_SUBST([HAVE_MKSTEMPS])
+  HAVE_PTSNAME=1;            AC_SUBST([HAVE_PTSNAME])
  HAVE_RANDOM_R=1;           AC_SUBST([HAVE_RANDOM_R])
  HAVE_REALLOC_POSIX=1;      AC_SUBST([HAVE_REALLOC_POSIX])
  HAVE_REALPATH=1;           AC_SUBST([HAVE_REALPATH])
@ -91,6 +98,7 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
  HAVE_STRTOULL=1;           AC_SUBST([HAVE_STRTOULL])
  HAVE_STRUCT_RANDOM_DATA=1; AC_SUBST([HAVE_STRUCT_RANDOM_DATA])
  HAVE_SYS_LOADAVG_H=0;      AC_SUBST([HAVE_SYS_LOADAVG_H])
+  HAVE_UNLOCKPT=1;           AC_SUBST([HAVE_UNLOCKPT])
  HAVE_UNSETENV=1;           AC_SUBST([HAVE_UNSETENV])
  REPLACE_CANONICALIZE_FILE_NAME=0;  AC_SUBST([REPLACE_CANONICALIZE_FILE_NAME])
  REPLACE_MKSTEMP=0;         AC_SUBST([REPLACE_MKSTEMP])
--- 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 12
+# serial 17

 # Written by Paul Eggert.

@ -26,17 +26,19 @@ AC_DEFUN([gl_HEADER_STRING_H_BODY],
  dnl corresponding gnulib module is not in use, and which is not
  dnl guaranteed by C89.
  gl_WARN_ON_USE_PREPARE([[#include <string.h>
-    ]], [memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul strdup
-    strndup strnlen strpbrk strsep strcasestr strtok_r strsignal strverscmp])
+    ]],
+    [memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul strdup
+     strncat strndup strnlen strpbrk strsep strcasestr strtok_r strsignal
+     strverscmp])
 ])

 AC_DEFUN([gl_STRING_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
@ -50,6 +52,7 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
  GNULIB_STPNCPY=0;     AC_SUBST([GNULIB_STPNCPY])
  GNULIB_STRCHRNUL=0;   AC_SUBST([GNULIB_STRCHRNUL])
  GNULIB_STRDUP=0;      AC_SUBST([GNULIB_STRDUP])
+  GNULIB_STRNCAT=0;     AC_SUBST([GNULIB_STRNCAT])
  GNULIB_STRNDUP=0;     AC_SUBST([GNULIB_STRNDUP])
  GNULIB_STRNLEN=0;     AC_SUBST([GNULIB_STRNLEN])
  GNULIB_STRPBRK=0;     AC_SUBST([GNULIB_STRPBRK])
@ -76,6 +79,7 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
  GNULIB_STRVERSCMP=0;  AC_SUBST([GNULIB_STRVERSCMP])
  HAVE_MBSLEN=0;        AC_SUBST([HAVE_MBSLEN])
  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_MEMCHR=1;                AC_SUBST([HAVE_MEMCHR])
  HAVE_DECL_MEMMEM=1;           AC_SUBST([HAVE_DECL_MEMMEM])
  HAVE_MEMPCPY=1;               AC_SUBST([HAVE_MEMPCPY])
  HAVE_DECL_MEMRCHR=1;          AC_SUBST([HAVE_DECL_MEMRCHR])
@ -90,16 +94,18 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
  HAVE_STRSEP=1;                AC_SUBST([HAVE_STRSEP])
  HAVE_STRCASESTR=1;            AC_SUBST([HAVE_STRCASESTR])
  HAVE_DECL_STRTOK_R=1;         AC_SUBST([HAVE_DECL_STRTOK_R])
-  HAVE_DECL_STRERROR=1;         AC_SUBST([HAVE_DECL_STRERROR])
  HAVE_DECL_STRSIGNAL=1;        AC_SUBST([HAVE_DECL_STRSIGNAL])
  HAVE_STRVERSCMP=1;            AC_SUBST([HAVE_STRVERSCMP])
  REPLACE_MEMCHR=0;             AC_SUBST([REPLACE_MEMCHR])
  REPLACE_MEMMEM=0;             AC_SUBST([REPLACE_MEMMEM])
+  REPLACE_STPNCPY=0;            AC_SUBST([REPLACE_STPNCPY])
  REPLACE_STRDUP=0;             AC_SUBST([REPLACE_STRDUP])
  REPLACE_STRSTR=0;             AC_SUBST([REPLACE_STRSTR])
  REPLACE_STRCASESTR=0;         AC_SUBST([REPLACE_STRCASESTR])
  REPLACE_STRERROR=0;           AC_SUBST([REPLACE_STRERROR])
+  REPLACE_STRNCAT=0;            AC_SUBST([REPLACE_STRNCAT])
  REPLACE_STRNDUP=0;            AC_SUBST([REPLACE_STRNDUP])
+  REPLACE_STRNLEN=0;            AC_SUBST([REPLACE_STRNLEN])
  REPLACE_STRSIGNAL=0;          AC_SUBST([REPLACE_STRSIGNAL])
  REPLACE_STRTOK_R=0;           AC_SUBST([REPLACE_STRTOK_R])
  UNDEFINE_STRTOK_R=0;          AC_SUBST([UNDEFINE_STRTOK_R])
--- a/m4/strings_h.m4
+++ b/m4/strings_h.m4
@ -1,7 +1,7 @@
 # Configure a replacement for <string.h>.
-# serial 2
+# serial 3

-# Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2010 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.
@ -28,7 +28,7 @@ AC_DEFUN([gl_STRINGS_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])

 AC_DEFUN([gl_HEADER_STRINGS_H_DEFAULTS],
--- a/m4/sys_file_h.m4
+++ b/m4/sys_file_h.m4
@ -1,5 +1,5 @@
 # Configure a replacement for <sys/file.h>.
-# serial 4
+# serial 5

 # Copyright (C) 2008-2010 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@ -32,7 +32,7 @@ AC_DEFUN([gl_HEADER_SYS_FILE_H],
 AC_DEFUN([gl_HEADER_SYS_FILE_MODULE_INDICATOR],
 [
  AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])

 AC_DEFUN([gl_HEADER_SYS_FILE_H_DEFAULTS],
--- a/m4/sys_socket_h.m4
+++ b/m4/sys_socket_h.m4
@ -1,4 +1,4 @@
-# sys_socket_h.m4 serial 16
+# sys_socket_h.m4 serial 17
 dnl Copyright (C) 2005-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -125,9 +125,9 @@ AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
--- a/m4/sys_stat_h.m4
+++ b/m4/sys_stat_h.m4
@ -1,4 +1,4 @@
-# sys_stat_h.m4 serial 23   -*- Autoconf -*-
+# sys_stat_h.m4 serial 24   -*- Autoconf -*-
 dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -38,9 +38,9 @@ AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
--- a/m4/time_h.m4
+++ b/m4/time_h.m4
@ -64,10 +64,10 @@ AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
 AC_DEFUN([gl_TIME_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
-  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS],
@ -77,12 +77,16 @@ AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS],
  GNULIB_STRPTIME=0;                     AC_SUBST([GNULIB_STRPTIME])
  GNULIB_TIMEGM=0;                       AC_SUBST([GNULIB_TIMEGM])
  GNULIB_TIME_R=0;                       AC_SUBST([GNULIB_TIME_R])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_LOCALTIME_R=1;                    AC_SUBST([HAVE_LOCALTIME_R])
+  HAVE_NANOSLEEP=1;                      AC_SUBST([HAVE_NANOSLEEP])
+  HAVE_STRPTIME=1;                       AC_SUBST([HAVE_STRPTIME])
+  HAVE_TIMEGM=1;                         AC_SUBST([HAVE_TIMEGM])
  dnl If another module says to replace or to not replace, do that.
  dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK;
  dnl this lets maintainers check for portability.
  REPLACE_LOCALTIME_R=GNULIB_PORTCHECK;  AC_SUBST([REPLACE_LOCALTIME_R])
  REPLACE_MKTIME=GNULIB_PORTCHECK;       AC_SUBST([REPLACE_MKTIME])
  REPLACE_NANOSLEEP=GNULIB_PORTCHECK;    AC_SUBST([REPLACE_NANOSLEEP])
-  REPLACE_STRPTIME=GNULIB_PORTCHECK;     AC_SUBST([REPLACE_STRPTIME])
  REPLACE_TIMEGM=GNULIB_PORTCHECK;       AC_SUBST([REPLACE_TIMEGM])
 ])
--- a/m4/time_r.m4
+++ b/m4/time_r.m4
@ -1,7 +1,6 @@
-dnl Reentrant time functions like localtime_r.
+dnl Reentrant time functions: localtime_r, gmtime_r.

-dnl Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Free Software Foundation,
-dnl Inc.
+dnl Copyright (C) 2003, 2006-2010 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.
@ -10,29 +9,40 @@ dnl Written by Paul Eggert.

 AC_DEFUN([gl_TIME_R],
 [
- dnl Persuade glibc and Solaris <time.h> to declare localtime_r.
+  dnl Persuade glibc and Solaris <time.h> to declare localtime_r.
  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])

  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
  AC_REQUIRE([AC_C_RESTRICT])

-  AC_CACHE_CHECK([whether localtime_r is compatible with its POSIX signature],
-    [gl_cv_time_r_posix],
-    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-         [[#include <time.h>]],
-         [[/* We don't need to append 'restrict's to the argument types,
-              even though the POSIX signature has the 'restrict's,
-              since C99 says they can't affect type compatibility.  */
-           struct tm * (*ptr) (time_t const *, struct tm *) = localtime_r;
-           if (ptr) return 0;
-           /* Check the return type is a pointer.  On HP-UX 10 it is 'int'.  */
-           *localtime_r (0, 0);]])],
-       [gl_cv_time_r_posix=yes],
-       [gl_cv_time_r_posix=no])])
-  if test $gl_cv_time_r_posix = yes; then
-    REPLACE_LOCALTIME_R=0
+  AC_CHECK_FUNCS_ONCE([localtime_r])
+  if test $ac_cv_func_localtime_r = yes; then
+    AC_CACHE_CHECK([whether localtime_r is compatible with its POSIX signature],
+      [gl_cv_time_r_posix],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <time.h>]],
+            [[/* We don't need to append 'restrict's to the argument types,
+                 even though the POSIX signature has the 'restrict's,
+                 since C99 says they can't affect type compatibility.  */
+              struct tm * (*ptr) (time_t const *, struct tm *) = localtime_r;
+              if (ptr) return 0;
+              /* Check the return type is a pointer.
+                 On HP-UX 10 it is 'int'.  */
+              *localtime_r (0, 0);]])
+         ],
+         [gl_cv_time_r_posix=yes],
+         [gl_cv_time_r_posix=no])
+      ])
+    if test $gl_cv_time_r_posix = yes; then
+      REPLACE_LOCALTIME_R=0
+    else
+      REPLACE_LOCALTIME_R=1
+    fi
  else
-    REPLACE_LOCALTIME_R=1
+    HAVE_LOCALTIME_R=0
+  fi
+  if test $HAVE_LOCALTIME_R = 0 || test $REPLACE_LOCALTIME_R = 1; then
    AC_LIBOBJ([time_r])
    gl_PREREQ_TIME_R
  fi
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@ -1,4 +1,4 @@
-# unistd_h.m4 serial 40
+# unistd_h.m4 serial 46
 dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -38,17 +38,18 @@ AC_DEFUN([gl_UNISTD_H],
    ]], [chown dup2 dup3 environ euidaccess faccessat fchdir fchownat
    fsync ftruncate getcwd getdomainname getdtablesize getgroups
    gethostname getlogin getlogin_r getpagesize getusershell setusershell
-    endusershell lchown link linkat lseek pipe2 pread readlink readlinkat
-    rmdir sleep symlink symlinkat unlink unlinkat usleep])
+    endusershell lchown link linkat lseek pipe2 pread pwrite readlink
+    readlinkat rmdir sleep symlink symlinkat ttyname_r unlink unlinkat
+    usleep])
 ])

 AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_UNISTD_H_DEFAULTS],
@ -79,12 +80,14 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
  GNULIB_LSEEK=0;            AC_SUBST([GNULIB_LSEEK])
  GNULIB_PIPE2=0;            AC_SUBST([GNULIB_PIPE2])
  GNULIB_PREAD=0;            AC_SUBST([GNULIB_PREAD])
+  GNULIB_PWRITE=0;           AC_SUBST([GNULIB_PWRITE])
  GNULIB_READLINK=0;         AC_SUBST([GNULIB_READLINK])
  GNULIB_READLINKAT=0;       AC_SUBST([GNULIB_READLINKAT])
  GNULIB_RMDIR=0;            AC_SUBST([GNULIB_RMDIR])
  GNULIB_SLEEP=0;            AC_SUBST([GNULIB_SLEEP])
  GNULIB_SYMLINK=0;          AC_SUBST([GNULIB_SYMLINK])
  GNULIB_SYMLINKAT=0;        AC_SUBST([GNULIB_SYMLINKAT])
+  GNULIB_TTYNAME_R=0;        AC_SUBST([GNULIB_TTYNAME_R])
  GNULIB_UNISTD_H_GETOPT=0;  AC_SUBST([GNULIB_UNISTD_H_GETOPT])
  GNULIB_UNISTD_H_SIGPIPE=0; AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
  GNULIB_UNLINK=0;           AC_SUBST([GNULIB_UNLINK])
@ -97,6 +100,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
  HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
  HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
  HAVE_FACCESSAT=1;       AC_SUBST([HAVE_FACCESSAT])
+  HAVE_FCHDIR=1;          AC_SUBST([HAVE_FCHDIR])
  HAVE_FCHOWNAT=1;        AC_SUBST([HAVE_FCHOWNAT])
  HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
  HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])
@ -106,28 +110,30 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
  HAVE_GETHOSTNAME=1;     AC_SUBST([HAVE_GETHOSTNAME])
  HAVE_GETLOGIN=1;        AC_SUBST([HAVE_GETLOGIN])
  HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
-  HAVE_GETUSERSHELL=1;    AC_SUBST([HAVE_GETUSERSHELL])
  HAVE_LCHOWN=1;          AC_SUBST([HAVE_LCHOWN])
  HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
  HAVE_LINKAT=1;          AC_SUBST([HAVE_LINKAT])
  HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
  HAVE_PREAD=1;           AC_SUBST([HAVE_PREAD])
+  HAVE_PWRITE=1;          AC_SUBST([HAVE_PWRITE])
  HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
  HAVE_READLINKAT=1;      AC_SUBST([HAVE_READLINKAT])
  HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
  HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
  HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])
-  HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
-  HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
-  HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
-  HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
+  HAVE_TTYNAME_R=1;       AC_SUBST([HAVE_TTYNAME_R])
  HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
  HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
+  HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
+  HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
+  HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
+  HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
+  HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
+  HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
  REPLACE_CHOWN=0;        AC_SUBST([REPLACE_CHOWN])
  REPLACE_CLOSE=0;        AC_SUBST([REPLACE_CLOSE])
  REPLACE_DUP=0;          AC_SUBST([REPLACE_DUP])
  REPLACE_DUP2=0;         AC_SUBST([REPLACE_DUP2])
-  REPLACE_FCHDIR=0;       AC_SUBST([REPLACE_FCHDIR])
  REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])
  REPLACE_GETCWD=0;       AC_SUBST([REPLACE_GETCWD])
  REPLACE_GETGROUPS=0;    AC_SUBST([REPLACE_GETGROUPS])
@ -137,10 +143,12 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
  REPLACE_LINKAT=0;       AC_SUBST([REPLACE_LINKAT])
  REPLACE_LSEEK=0;        AC_SUBST([REPLACE_LSEEK])
  REPLACE_PREAD=0;        AC_SUBST([REPLACE_PREAD])
+  REPLACE_PWRITE=0;       AC_SUBST([REPLACE_PWRITE])
  REPLACE_READLINK=0;     AC_SUBST([REPLACE_READLINK])
  REPLACE_RMDIR=0;        AC_SUBST([REPLACE_RMDIR])
  REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])
  REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])
+  REPLACE_TTYNAME_R=0;    AC_SUBST([REPLACE_TTYNAME_R])
  REPLACE_UNLINK=0;       AC_SUBST([REPLACE_UNLINK])
  REPLACE_UNLINKAT=0;     AC_SUBST([REPLACE_UNLINKAT])
  REPLACE_USLEEP=0;       AC_SUBST([REPLACE_USLEEP])
--- a/m4/vasnprintf.m4
+++ b/m4/vasnprintf.m4
@ -1,4 +1,4 @@
-# vasnprintf.m4 serial 29
+# vasnprintf.m4 serial 31
 dnl Copyright (C) 2002-2004, 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@ -54,6 +54,7 @@ AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
 # Prerequisites of lib/vasnprintf.c.
 AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
 [
+  AC_REQUIRE([AC_C_INLINE])
  AC_REQUIRE([AC_FUNC_ALLOCA])
  AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
  AC_REQUIRE([gt_TYPE_WCHAR_T])
@ -62,6 +63,17 @@ AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
  dnl Use the _snprintf function only if it is declared (because on NetBSD it
  dnl is defined as a weak alias of snprintf; we prefer to use the latter).
  AC_CHECK_DECLS([_snprintf], , , [#include <stdio.h>])
+  dnl We can avoid a lot of code by assuming that snprintf's return value
+  dnl conforms to ISO C99. So check that.
+  AC_REQUIRE([gl_SNPRINTF_RETVAL_C99])
+  case "$gl_cv_func_snprintf_retval_c99" in
+    *yes)
+      AC_DEFINE([HAVE_SNPRINTF_RETVAL_C99], [1],
+        [Define if the return value of the snprintf function is the number of
+         of bytes (excluding the terminating NUL) that would have been produced
+         if the buffer had been large enough.])
+      ;;
+  esac
 ])

 # Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
--- a/m4/visibility.m4
+++ b/m4/visibility.m4
@ -1,5 +1,5 @@
-# visibility.m4 serial 2 (gettext-0.18)
-dnl Copyright (C) 2005, 2008, 2009, 2010 Free Software Foundation, Inc.
+# visibility.m4 serial 3 (gettext-0.18)
+dnl Copyright (C) 2005, 2008-2010 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.
@ -26,15 +26,37 @@ AC_DEFUN([gl_VISIBILITY],
  CFLAG_VISIBILITY=
  HAVE_VISIBILITY=0
  if test -n "$GCC"; then
+    dnl First, check whether -Werror can be added to the command line, or
+    dnl whether it leads to an error because of some other option that the
+    dnl user has put into $CC $CFLAGS $CPPFLAGS.
+    AC_MSG_CHECKING([whether the -Werror option is usable])
+    AC_CACHE_VAL([gl_cv_cc_vis_werror], [
+      gl_save_CFLAGS="$CFLAGS"
+      CFLAGS="$CFLAGS -Werror"
+      AC_TRY_COMPILE([], [],
+        [gl_cv_cc_vis_werror=yes],
+        [gl_cv_cc_vis_werror=no])
+      CFLAGS="$gl_save_CFLAGS"])
+    AC_MSG_RESULT([$gl_cv_cc_vis_werror])
+    dnl Now check whether visibility declarations are supported.
    AC_MSG_CHECKING([for simple visibility declarations])
    AC_CACHE_VAL([gl_cv_cc_visibility], [
      gl_save_CFLAGS="$CFLAGS"
      CFLAGS="$CFLAGS -fvisibility=hidden"
+      dnl We use the option -Werror and a function dummyfunc, because on some
+      dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning
+      dnl "visibility attribute not supported in this configuration; ignored"
+      dnl at the first function definition in every compilation unit, and we
+      dnl don't want to use the option in this case.
+      if test $gl_cv_cc_vis_werror = yes; then
+        CFLAGS="$CFLAGS -Werror"
+      fi
      AC_TRY_COMPILE(
        [extern __attribute__((__visibility__("hidden"))) int hiddenvar;
         extern __attribute__((__visibility__("default"))) int exportedvar;
         extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
-         extern __attribute__((__visibility__("default"))) int exportedfunc (void);],
+         extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+         void dummyfunc (void) {}],
        [],
        [gl_cv_cc_visibility=yes],
        [gl_cv_cc_visibility=no])
--- a/m4/wchar_h.m4
+++ b/m4/wchar_h.m4
@ -7,7 +7,7 @@ dnl with or without modifications, as long as this notice is preserved.

 dnl Written by Eric Blake.

-# wchar_h.m4 serial 32
+# wchar_h.m4 serial 33

 AC_DEFUN([gl_WCHAR_H],
 [
@ -107,9 +107,9 @@ AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
 [
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
-  gl_MODULE_INDICATOR([$1])
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])

 AC_DEFUN([gl_WCHAR_H_DEFAULTS],
--- a/maint.mk
+++ b/maint.mk
@ -27,7 +27,8 @@ build_aux ?= $(srcdir)/build-aux
 # Do not save the original name or timestamp in the .tar.gz file.
 # Use --rsyncable if available.
 gzip_rsyncable := \
-  $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null && echo --rsyncable)
+  $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null \
+    && printf %s --rsyncable)
 GZIP_ENV = '--no-name --best $(gzip_rsyncable)'

 GIT = git
@ -129,34 +130,124 @@ sc_m_rules_ = $(patsubst %, %.m, $(syntax-check-rules))
 .PHONY: $(sc_m_rules_)
 $(sc_m_rules_):
 	@echo $(patsubst sc_%.m, %, $@)
+	@date +%s.%N > .sc-start-$(basename $@)

-local-check := $(filter-out $(local-checks-to-skip), $(local-checks-available))
+# Compute and print the elapsed time for each syntax-check rule.
+sc_z_rules_ = $(patsubst %, %.z, $(syntax-check-rules))
+.PHONY: $(sc_z_rules_)
+$(sc_z_rules_): %.z: %
+	@end=$$(date +%s.%N);						\
+	start=$$(cat .sc-start-$*);					\
+	rm -f .sc-start-$*;						\
+	awk -v s=$$start -v e=$$end					\
+	  'END {printf "%.2f $(patsubst sc_%,%,$*)\n", e - s}' < /dev/null
+
+# The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
+# that computes and prints elapsed time.
+local-check :=								\
+  $(patsubst sc_%, sc_%.z,						\
+    $(filter-out $(local-checks-to-skip), $(local-checks-available)))

 syntax-check: $(local-check)
-#	@grep -nE '#  *include <(limits|std(def|arg|bool))\.h>'		\
-#	    $$(find -type f -name '*.[chly]') &&			\
-#	  { echo '$(ME): found conditional include' 1>&2;		\
-#	    exit 1; } || :

-#	grep -nE '^#  *include <(string|stdlib)\.h>'			\
-#	    $(srcdir)/{lib,src}/*.[chy] &&				\
-#	  { echo '$(ME): FIXME' 1>&2;					\
-#	    exit 1; } || :
-# FIXME: don't allow `#include .strings\.h' anywhere
+# _sc_search_regexp
+#
+# This macro searches for a given construct in the selected files and
+# then takes some action.
+#
+# Parameters (shell variables):
+#
+#  prohibit | require
+#
+#     Regular expression (ERE) denoting either a forbidden construct
+#     or a required construct.  Those arguments are exclusive.
+#
+#  in_vc_files | in_files
+#
+#     grep-E-style regexp denoting the files to check.  If no files
+#     are specified the default are all the files that are under
+#     version control.
+#
+#  containing | non_containing
+#
+#     Select the files (non) containing strings matching this regexp.
+#     If both arguments are specified then CONTAINING takes
+#     precedence.
+#
+#  with_grep_options
+#
+#     Extra options for grep.
+#
+#  ignore_case
+#
+#     Ignore case.
+#
+#  halt
+#
+#     Message to display before to halting execution.

-# By default, _prohibit_regexp does not ignore case.
+# By default, _sc_search_regexp does not ignore case.
 export ignore_case =
-_ignore_case = $$(test -n "$$ignore_case" && echo -i || :)
+_ignore_case = $$(test -n "$$ignore_case" && printf %s -i || :)

-# There are many rules below that prohibit constructs in this package.
-# If the offending construct can be matched with a grep-E-style regexp,
-# use this macro.  The shell variables "re" and "msg" must be defined.
-define _prohibit_regexp
-  dummy=; : so we do not need a semicolon before each use;		\
-  test "x$$re" != x || { echo '$(ME): re not defined' 1>&2; exit 1; };	\
-  test "x$$msg" != x || { echo '$(ME): msg not defined' 1>&2; exit 1; };\
-  grep $(_ignore_case) -nE "$$re" $$($(VC_LIST_EXCEPT)) &&		\
-    { echo '$(ME): '"$$msg" 1>&2; exit 1; } || :
+define _sc_say_and_exit
+   dummy=; : so we do not need a semicolon before each use;		\
+   { printf '%s\n' "$(ME): $$msg" 1>&2; exit 1; };
+endef
+
+# _sc_search_regexp used to be named _prohibit_regexp.  However,
+# upgrading to the new definition and leaving the old name undefined
+# would usually convert each custom rule using $(_prohibit_regexp)
+# (usually defined in cfg.mk) into a no-op.  This definition ensures
+# that people know right away if they're still using the old name.
+# FIXME: remove in 2012.
+_prohibit_regexp = \
+  $(error '*** you need to s/_prohibit_regexp/_sc_search_regexp/, and adapt')
+
+define _sc_search_regexp
+   dummy=; : so we do not need a semicolon before each use;		\
+									\
+   : Check arguments;							\
+   test -n "$$prohibit" && test -n "$$require"				\
+     && { msg='Cannot specify both prohibit and require'		\
+          $(_sc_say_and_exit) } || :;					\
+   test -z "$$prohibit" && test -z "$$require"				\
+     && { msg='Should specify either prohibit or require'		\
+          $(_sc_say_and_exit) } || :;					\
+   test -n "$$in_vc_files" && test -n "$$in_files"			\
+     && { msg='Cannot specify both in_vc_files and in_files'		\
+          $(_sc_say_and_exit) } || :;					\
+   test "x$$halt" != x							\
+     || { msg='halt not defined' $(_sc_say_and_exit) };			\
+									\
+   : Filter by file name;						\
+   if test -n "$$in_files"; then					\
+     files=$$(find $(srcdir) | grep -E "$$in_files");			\
+   else									\
+     files=$$($(VC_LIST_EXCEPT));					\
+     if test -n "$$in_vc_files"; then					\
+       files=$$(echo "$$files" | grep -E "$$in_vc_files");		\
+     fi;								\
+   fi;									\
+									\
+   : Filter by content;							\
+   test -n "$$files" && test -n "$$containing"				\
+     && { files=$$(grep -l "$$containing" $$files); } || :;		\
+   test -n "$$files" && test -n "$$non_containing"			\
+     && { files=$$(grep -vl "$$non_containing" $$files); } || :;	\
+									\
+   : Check for the construct;						\
+   if test -n "$$files"; then						\
+     if test -n "$$prohibit"; then					\
+       grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
+         && { msg="$$halt" $(_sc_say_and_exit) } || :;			\
+     else								\
+       grep $$with_grep_options $(_ignore_case) -LE "$$require" $$files \
+           | grep .							\
+         && { msg="$$halt" $(_sc_say_and_exit) } || :;			\
+     fi									\
+   else :;								\
+   fi || :;
 endef

 sc_avoid_if_before_free:
@ -167,29 +258,31 @@ sc_avoid_if_before_free:
 	    exit 1; } || :

 sc_cast_of_argument_to_free:
-	@re='\<free *\( *\(' msg='don'\''t cast free argument'		\
-	  $(_prohibit_regexp)
+	@prohibit='\<free *\( *\(' halt='don'\''t cast free argument'	\
+	  $(_sc_search_regexp)

 sc_cast_of_x_alloc_return_value:
-	@re='\*\) *x(m|c|re)alloc\>'					\
-	msg='don'\''t cast x*alloc return value'			\
-	  $(_prohibit_regexp)
+	@prohibit='\*\) *x(m|c|re)alloc\>'				\
+	halt='don'\''t cast x*alloc return value'			\
+	  $(_sc_search_regexp)

 sc_cast_of_alloca_return_value:
-	@re='\*\) *alloca\>' msg='don'\''t cast alloca return value'	\
-	  $(_prohibit_regexp)
+	@prohibit='\*\) *alloca\>'					\
+	halt='don'\''t cast alloca return value'			\
+	  $(_sc_search_regexp)

 sc_space_tab:
-	@re='[ ]	' msg='found SPACE-TAB sequence; remove the SPACE' \
-	  $(_prohibit_regexp)
+	@prohibit='[ ]	'						\
+	halt='found SPACE-TAB sequence; remove the SPACE'		\
+	  $(_sc_search_regexp)

 # Don't use *scanf or the old ato* functions in `real' code.
 # They provide no error checking mechanism.
 # Instead, use strto* functions.
 sc_prohibit_atoi_atof:
-	@re='\<([fs]?scanf|ato([filq]|ll)) *\('				\
-	msg='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q' \
-	  $(_prohibit_regexp)
+	@prohibit='\<([fs]?scanf|ato([filq]|ll)) *\('				\
+	halt='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q'	\
+	  $(_sc_search_regexp)

 # Use STREQ rather than comparing strcmp == 0, or != 0.
 sc_prohibit_strcmp:
@ -210,28 +303,29 @@ sc_prohibit_strcmp:
 #  | xargs --no-run-if-empty \
 #      perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
 sc_prohibit_magic_number_exit:
-	@re='(^|[^.])\<(usage|exit) ?\([0-9]|\<error ?\([1-9][0-9]*,'	\
-	msg='use EXIT_* values rather than magic number'		\
-	  $(_prohibit_regexp)
+	@prohibit='(^|[^.])\<(usage|exit) ?\([0-9]|\<error ?\([1-9][0-9]*,'	\
+	halt='use EXIT_* values rather than magic number'			\
+	  $(_sc_search_regexp)

 # Using EXIT_SUCCESS as the first argument to error is misleading,
 # since when that parameter is 0, error does not exit.  Use `0' instead.
 sc_error_exit_success:
-	@grep -nE 'error \(EXIT_SUCCESS,'				\
-	    $$($(VC_LIST_EXCEPT) | grep -E '\.[chly]$$') &&		\
-	  { echo '$(ME): found error (EXIT_SUCCESS' 1>&2; exit 1; } || :
+	@prohibit='error *\(EXIT_SUCCESS,'				\
+	in_vc_files='\.[chly]$$'					\
+	halt='found error (EXIT_SUCCESS'				\
+	 $(_sc_search_regexp)

 # `FATAL:' should be fully upper-cased in error messages
 # `WARNING:' should be fully upper-cased, or fully lower-cased
 sc_error_message_warn_fatal:
-	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
+	@grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))		\
 	    | grep -E '"Warning|"Fatal|"fatal' &&			\
 	  { echo '$(ME): use FATAL, WARNING or warning'	1>&2;		\
 	    exit 1; } || :

 # Error messages should not start with a capital letter
 sc_error_message_uppercase:
-	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
+	@grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))		\
 	    | grep -E '"[A-Z]'						\
 	    | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' &&		\
 	  { echo '$(ME): found capitalized error message' 1>&2;		\
@ -239,35 +333,32 @@ sc_error_message_uppercase:

 # Error messages should not end with a period
 sc_error_message_period:
-	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
+	@grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))		\
 	    | grep -E '[^."]\."' &&					\
 	  { echo '$(ME): found error message ending in period' 1>&2;	\
 	    exit 1; } || :

 sc_file_system:
-	@re=file''system ignore_case=1					\
-	msg='found use of "file''system"; spell it "file system"'	\
-	  $(_prohibit_regexp)
+	@prohibit=file''system						\
+	ignore_case=1							\
+	halt='found use of "file''system"; spell it "file system"'	\
+	  $(_sc_search_regexp)

 # Don't use cpp tests of this symbol.  All code assumes config.h is included.
 sc_prohibit_have_config_h:
-	@grep -n '^# *if.*HAVE''_CONFIG_H' $$($(VC_LIST_EXCEPT)) &&	\
-	  { echo '$(ME): found use of HAVE''_CONFIG_H; remove'		\
-		1>&2; exit 1; } || :
+	@prohibit='^# *if.*HAVE''_CONFIG_H'				\
+	halt='found use of HAVE''_CONFIG_H; remove'			\
+	  $(_sc_search_regexp)

 # Nearly all .c files must include <config.h>.  However, we also permit this
 # via inclusion of a package-specific header, if cfg.mk specified one.
 # config_h_header must be suitable for grep -E.
 config_h_header ?= <config\.h>
 sc_require_config_h:
-	@if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then	\
-	  grep -EL '^# *include $(config_h_header)'			\
-		$$($(VC_LIST_EXCEPT) | grep '\.c$$')			\
-	      | grep . &&						\
-	  { echo '$(ME): the above files do not include <config.h>'	\
-		1>&2; exit 1; } || :;					\
-	else :;								\
-	fi
+	@require='^# *include $(config_h_header)'			\
+	in_vc_files='\.c$$'						\
+	halt='the above files do not include <config.h>'		\
+	  $(_sc_search_regexp)

 # You must include <config.h> before including any other header file.
 # This can possibly be via a package-specific header, if given by cfg.mk.
@ -286,13 +377,14 @@ sc_require_config_h_first:
 	fi

 sc_prohibit_HAVE_MBRTOWC:
-	@re='\bHAVE_MBRTOWC\b' msg="do not use $$re; it is always defined" \
-	  $(_prohibit_regexp)
+	@prohibit='\bHAVE_MBRTOWC\b'					\
+	halt="do not use $$prohibit; it is always defined"		\
+	  $(_sc_search_regexp)

 # To use this "command" macro, you must first define two shell variables:
 # h: the header, enclosed in <> or ""
 # re: a regular expression that matches IFF something provided by $h is used.
-define _header_without_use
+define _sc_header_without_use
  dummy=; : so we do not need a semicolon before each use;		\
  h_esc=`echo "$$h"|sed 's/\./\\\\./g'`;				\
  if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then		\
@ -307,49 +399,49 @@ endef

 # Prohibit the inclusion of assert.h without an actual use of assert.
 sc_prohibit_assert_without_use:
-	@h='<assert.h>' re='\<assert *\(' $(_header_without_use)
+	@h='<assert.h>' re='\<assert *\(' $(_sc_header_without_use)

 # Prohibit the inclusion of close-stream.h without an actual use.
 sc_prohibit_close_stream_without_use:
-	@h='"close-stream.h"' re='\<close_stream *\(' $(_header_without_use)
+	@h='"close-stream.h"' re='\<close_stream *\(' $(_sc_header_without_use)

 # Prohibit the inclusion of getopt.h without an actual use.
 sc_prohibit_getopt_without_use:
-	@h='<getopt.h>' re='\<getopt(_long)? *\(' $(_header_without_use)
+	@h='<getopt.h>' re='\<getopt(_long)? *\(' $(_sc_header_without_use)

 # Don't include quotearg.h unless you use one of its functions.
 sc_prohibit_quotearg_without_use:
-	@h='"quotearg.h"' re='\<quotearg(_[^ ]+)? *\(' $(_header_without_use)
+	@h='"quotearg.h"' re='\<quotearg(_[^ ]+)? *\(' $(_sc_header_without_use)

 # Don't include quote.h unless you use one of its functions.
 sc_prohibit_quote_without_use:
-	@h='"quote.h"' re='\<quote(_n)? *\(' $(_header_without_use)
+	@h='"quote.h"' re='\<quote(_n)? *\(' $(_sc_header_without_use)

 # Don't include this header unless you use one of its functions.
 sc_prohibit_long_options_without_use:
 	@h='"long-options.h"' re='\<parse_long_options *\(' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 # Don't include this header unless you use one of its functions.
 sc_prohibit_inttostr_without_use:
 	@h='"inttostr.h"' re='\<(off|[iu]max|uint)tostr *\(' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 # Don't include this header unless you use one of its functions.
 sc_prohibit_ignore_value_without_use:
 	@h='"ignore-value.h"' re='\<ignore_(value|ptr) *\(' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 # Don't include this header unless you use one of its functions.
 sc_prohibit_error_without_use:
 	@h='"error.h"' \
 	re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 # Don't include xalloc.h unless you use one of its functions.
 # Consider these symbols:
 # perl -lne '/^# *define (\w+)\(/ and print $1' lib/xalloc.h|grep -v '^__';
-# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) \(/ and print $1' lib/xalloc.h
+# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/xalloc.h
 # Divide into two sets on case, and filter each through this:
 # | sort | perl -MRegexp::Assemble -le \
 #  'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
@ -367,10 +459,10 @@ _xa2 = X([CZ]|N?M)ALLOC
 sc_prohibit_xalloc_without_use:
 	@h='"xalloc.h"' \
 	re='\<($(_xa1)|$(_xa2)) *\('\
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 # Extract function names:
-# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) \(/ and print $1' lib/hash.h
+# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/hash.h
 _hash_re = \
 clear|delete|free|get_(first|next)|insert|lookup|print_statistics|reset_tuning
 _hash_fn = \<($(_hash_re)) *\(
@ -378,42 +470,43 @@ _hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
 sc_prohibit_hash_without_use:
 	@h='"hash.h"' \
 	re='$(_hash_fn)|$(_hash_struct)'\
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 sc_prohibit_hash_pjw_without_use:
 	@h='"hash-pjw.h"' \
 	re='\<hash_pjw *\(' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 sc_prohibit_safe_read_without_use:
 	@h='"safe-read.h"' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 sc_prohibit_argmatch_without_use:
 	@h='"argmatch.h"' \
 	re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<argmatch(_exit_fn|_(in)?valid) *\()' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 sc_prohibit_canonicalize_without_use:
 	@h='"canonicalize.h"' \
 	re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode)' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 sc_prohibit_root_dev_ino_without_use:
 	@h='"root-dev-ino.h"' \
 	re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 sc_prohibit_openat_without_use:
 	@h='"openat.h"' \
 	re='\<(openat_(permissive|needs_fchdir|(save|restore)_fail)|l?(stat|ch(own|mod))at|(euid)?accessat)\>' \
-	  $(_header_without_use)
+	  $(_sc_header_without_use)

 # Prohibit the inclusion of c-ctype.h without an actual use.
 ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
 |isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
 sc_prohibit_c_ctype_without_use:
-	@h='[<"]c-ctype.h[">]' re='\<c_($(ctype_re)) *\(' $(_header_without_use)
+	@h='[<"]c-ctype.h[">]' re='\<c_($(ctype_re)) *\(' \
+	  $(_sc_header_without_use)

 _empty =
 _sp = $(_empty) $(_empty)
@ -450,35 +543,50 @@ _sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
 sc_prohibit_signal_without_use:
 	@h='<signal.h>'							\
 	re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'		\
-	  $(_header_without_use)
+	  $(_sc_header_without_use)
+
+# Prohibit the inclusion of strings.h without a sensible use.
+# Using the likes of bcmp, bcopy, bzero, index or rindex is not sensible.
+sc_prohibit_strings_without_use:
+	@h='<strings.h>'						\
+	re='\<(strn?casecmp|ffs(ll)?)\>'				\
+	  $(_sc_header_without_use)
+
+# Get the list of symbol names with this:
+# perl -lne '/^# *define (\w+)\(/ and print $1' lib/intprops.h|grep -v '^s'|fmt
+_intprops_names =							\
+  TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT		\
+  TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM		\
+  INT_STRLEN_BOUND INT_BUFSIZE_BOUND
+_intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
+# Prohibit the inclusion of intprops.h without an actual use.
+sc_prohibit_intprops_without_use:
+	@h='"intprops.h"'						\
+	re='\<($(_intprops_syms_re)) *\('				\
+	  $(_sc_header_without_use)

 sc_obsolete_symbols:
-	@re='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'				\
-	msg='do not use HAVE''_FCNTL_H or O'_NDELAY			\
-	  $(_prohibit_regexp)
+	@prohibit='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'			\
+	halt='do not use HAVE''_FCNTL_H or O'_NDELAY			\
+	  $(_sc_search_regexp)

 # FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ

 # Each nonempty ChangeLog line must start with a year number, or a TAB.
 sc_changelog:
-	@if $(VC_LIST_EXCEPT) | grep -l '^ChangeLog$$' >/dev/null; then	\
-	  grep -n '^[^12	]'					\
-	    $$($(VC_LIST_EXCEPT) | grep '^ChangeLog$$') &&		\
-	  { echo '$(ME): found unexpected prefix in a ChangeLog' 1>&2;	\
-	    exit 1; } || :;						\
-	fi
+	@prohibit='^[^12	]'					\
+	in_vc_files='^ChangeLog$$'					\
+	halt='found unexpected prefix in a ChangeLog'			\
+	  $(_sc_search_regexp)

 # Ensure that each .c file containing a "main" function also
 # calls set_program_name.
 sc_program_name:
-	@if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then	\
-	  files=$$(grep -l '^main *(' $$($(VC_LIST_EXCEPT) | grep '\.c$$')); \
-	  grep -LE 'set_program_name *\(m?argv\[0\]\);' $$files		\
-	      | grep . &&						\
-	  { echo '$(ME): the above files do not call set_program_name'	\
-		1>&2; exit 1; } || :;					\
-	else :;								\
-	fi
+	@require='set_program_name *\(m?argv\[0\]\);'			\
+	in_vc_files='\.c$$'						\
+	containing='^main *('						\
+	halt='the above files do not call set_program_name'		\
+	  $(_sc_search_regexp)

 # Require that the final line of each test-lib.sh-using test be this one:
 # Exit $fail
@ -500,31 +608,30 @@ sc_require_test_exit_idiom:
 	fi

 sc_the_the:
-	@re='\<the ''the\>'						\
-	ignore_case=1 msg='found use of "the ''the";'			\
-	  $(_prohibit_regexp)
+	@prohibit='\<the ''the\>'					\
+	ignore_case=1							\
+	halt='found use of "the ''the";'				\
+	  $(_sc_search_regexp)

 sc_trailing_blank:
-	@re='[	 ]$$'							\
-	msg='found trailing blank(s)'					\
-	  $(_prohibit_regexp)
+	@prohibit='[	 ]$$'						\
+	halt='found trailing blank(s)'					\
+	  $(_sc_search_regexp)

 # Match lines like the following, but where there is only one space
 # between the options and the description:
 #   -D, --all-repeated[=delimit-method]  print all duplicate lines\n
 longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
 sc_two_space_separator_in_usage:
-	@grep -nE '^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'		\
-	    $$($(VC_LIST_EXCEPT)) &&					\
-	  { echo "$(ME): help2man requires at least two spaces between"; \
-	    echo "$(ME): an option and its description";		\
-		1>&2; exit 1; } || :
+	@prohibit='^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'		\
+	halt='help2man requires at least two spaces between an option and its description'\
+	  $(_sc_search_regexp)

 # Look for diagnostics that aren't marked for translation.
 # This won't find any for which error's format string is on a separate line.
 sc_unmarked_diagnostics:
 	@grep -nE							\
-	    '\<error \([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT))	\
+	    '\<error *\([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT))	\
 	  | grep -v '_''(' &&						\
 	  { echo '$(ME): found unmarked diagnostic(s)' 1>&2;		\
 	    exit 1; } || :
@ -532,43 +639,167 @@ sc_unmarked_diagnostics:
 # Avoid useless parentheses like those in this example:
 # #if defined (SYMBOL) || defined (SYM2)
 sc_useless_cpp_parens:
-	@grep -n '^# *if .*defined *(' $$($(VC_LIST_EXCEPT)) &&		\
-	  { echo '$(ME): found useless parentheses in cpp directive'	\
-		1>&2; exit 1; } || :
+	@prohibit='^# *if .*defined *\('				\
+	halt='found useless parentheses in cpp directive'		\
+	  $(_sc_search_regexp)
+
+# List headers for which HAVE_HEADER_H is always true, assuming you are
+# using the appropriate gnulib module.  CAUTION: for each "unnecessary"
+# #if HAVE_HEADER_H that you remove, be sure that your project explicitly
+# requires the gnulib module that guarantees the usability of that header.
+gl_assured_headers_ = \
+  cd $(gnulib_dir)/lib && echo *.in.h|sed 's/\.in\.h//g'
+
+# Convert the list of names to upper case, and replace each space with "|".
+az_ = abcdefghijklmnopqrstuvwxyz
+AZ_ = ABCDEFGHIJKLMNOPQRSTUVWXYZ
+gl_header_upper_case_or_ =						\
+  $$($(gl_assured_headers_)						\
+    | tr $(az_)/.- $(AZ_)___						\
+    | tr -s ' ' '|'							\
+    )
+sc_prohibit_always_true_header_tests:
+	@or=$(gl_header_upper_case_or_);				\
+	re="HAVE_($$or)_H";						\
+	prohibit='\<'"$$re"'\>'						\
+	halt='do not test the above HAVE_<header>_H symbol(s);\n'\
+'  with the corresponding gnulib module, they are always true'		\
+	  $(_sc_search_regexp)
+
+# ==================================================================
+gl_other_headers_ ?= \
+  intprops.h	\
+  openat.h	\
+  stat-macros.h
+
+# Perl -lne code to extract "significant" cpp-defined symbols from a
+# gnulib header file, eliminating a few common false-positives.
+gl_extract_significant_defines_ = \
+  /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/\
+    && $$2 !~ /(?:rpl_|_used_without_)/\
+    && $$1 !~ /^(?:NSIG|ATTRIBUTE_NORETURN)$$/\
+    and print $$1
+
+# Create a list of regular expressions matching the names
+# of macros that are guaranteed to be defined by parts of gnulib.
+define def_sym_regex
+	gen_h=$(gl_generated_headers_);					\
+	(cd $(gnulib_dir)/lib;						\
+	  for f in *.in.h $(gl_other_headers_); do			\
+	    perl -lne '$(gl_extract_significant_defines_)' $$f;		\
+	  done;								\
+	) | sort -u							\
+	  | grep -Ev '^ATTRIBUTE_NORETURN'				\
+	  | sed 's/^/^ *# *(define|undef)  */;s/$$/\\>/'
+endef
+
+# Don't define macros that we already get from gnulib header files.
+sc_prohibit_always-defined_macros:
+	@if test -d $(gnulib_dir); then					\
+	  case $$(echo all: | grep -l -f - Makefile) in Makefile);; *)	\
+	    echo '$(ME): skipping $@: you lack GNU grep' 1>&2; exit 0;;	\
+	  esac;								\
+	  $(def_sym_regex) | grep -E -f - $$($(VC_LIST_EXCEPT))		\
+	    && { echo '$(ME): define the above via some gnulib .h file'	\
+		  1>&2;  exit 1; } || :;				\
+	fi
+# ==================================================================
+
+# Prohibit checked in backup files.
+sc_prohibit_backup_files:
+	@$(VC_LIST) | grep '~$$' &&				\
+	  { echo '$(ME): found version controlled backup file' 1>&2;	\
+	    exit 1; } || :

 # Require the latest GPL.
 sc_GPL_version:
-	@re='either ''version [^3]' msg='GPL vN, N!=3'			\
-	  $(_prohibit_regexp)
+	@prohibit='either ''version [^3]'				\
+	halt='GPL vN, N!=3'						\
+	  $(_sc_search_regexp)

 # Require the latest GFDL.  Two regexp, since some .texi files end up
 # line wrapping between 'Free Documentation License,' and 'Version'.
 _GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
 sc_GFDL_version:
-	@re='$(_GFDL_regexp)' msg='GFDL vN, N!=3'			\
-	  $(_prohibit_regexp)
+	@prohibit='$(_GFDL_regexp)'					\
+	halt='GFDL vN, N!=3'						\
+	  $(_sc_search_regexp)
+
+# Don't use Texinfo @acronym{} as it is not a good idea.
+texinfo_suffix_re_ ?= \.(txi|texi(nfo)?)$$
+sc_texinfo_acronym:
+	@prohibit='@acronym\{'						\
+	in_vc_files='$(texinfo_suffix_re_)'				\
+	halt='found use of Texinfo @acronym{}'				\
+	  $(_sc_search_regexp)

 cvs_keywords = \
  Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State

 sc_prohibit_cvs_keyword:
-	@re='\$$($(cvs_keywords))\$$'					\
-	    msg='do not use CVS keyword expansion'			\
-	  $(_prohibit_regexp)
+	@prohibit='\$$($(cvs_keywords))\$$'				\
+	halt='do not use CVS keyword expansion'				\
+	  $(_sc_search_regexp)
+
+# This Perl code is slightly obfuscated.  Not only is each "$" doubled
+# because it's in a Makefile, but the $$c's are comments;  we cannot
+# use "#" due to the way the script ends up concatenated onto one line.
+# It would be much more concise, and would produce better output (including
+# counts) if written as:
+#   perl -ln -0777 -e '/\n(\n+)$/ and print "$ARGV: ".length $1' ...
+# but that would be far less efficient, reading the entire contents
+# of each file, rather than just the last two bytes of each.
+#
+# This is a perl script that is expected to be the single-quoted argument
+# to a command-line "-le".  The remaining arguments are file names.
+# Print the name of each file that ends in two or more newline bytes.
+# Exit nonzero if at least one such file is found, otherwise, exit 0.
+# Warn about, but otherwise ignore open failure.  Ignore seek/read failure.
+#
+# Use this if you want to remove trailing empty lines from selected files:
+#   perl -pi -0777 -e 's/\n\n+$/\n/' files...
+#
+detect_empty_lines_at_EOF_ =						\
+  foreach my $$f (@ARGV)						\
+    {									\
+      open F, "<", $$f or (warn "failed to open $$f: $$!\n"), next;	\
+      my $$p = sysseek (F, -2, 2);					\
+      my $$c = "seek failure probably means file has < 2 bytes; ignore"; \
+      my $$last_two_bytes;						\
+      defined $$p and $$p = sysread F, $$last_two_bytes, 2;		\
+      close F;								\
+      $$c = "ignore read failure";					\
+      $$p && $$last_two_bytes eq "\n\n" and (print $$f), $$fail=1;	\
+    }									\
+  END { exit defined $$fail }
+sc_prohibit_empty_lines_at_EOF:
+	@perl -le '$(detect_empty_lines_at_EOF_)' $$($(VC_LIST_EXCEPT))	\
+          || { echo '$(ME): the above files end with empty line(s)'     \
+		1>&2; exit 1; } || :;					\

 # Make sure we don't use st_blocks.  Use ST_NBLOCKS instead.
 # This is a bit of a kludge, since it prevents use of the string
 # even in comments, but for now it does the job with no false positives.
 sc_prohibit_stat_st_blocks:
-	@re='[.>]st_blocks' msg='do not use st_blocks; use ST_NBLOCKS'	\
-	  $(_prohibit_regexp)
+	@prohibit='[.>]st_blocks'					\
+	halt='do not use st_blocks; use ST_NBLOCKS'			\
+	  $(_sc_search_regexp)

 # Make sure we don't define any S_IS* macros in src/*.c files.
 # They're already defined via gnulib's sys/stat.h replacement.
 sc_prohibit_S_IS_definition:
-	@re='^ *# *define  *S_IS'					\
-	msg='do not define S_IS* macros; include <sys/stat.h>'		\
-	  $(_prohibit_regexp)
+	@prohibit='^ *# *define  *S_IS'					\
+	halt='do not define S_IS* macros; include <sys/stat.h>'		\
+	  $(_sc_search_regexp)
+
+_ptm1 = use "test C1 && test C2", not "test C1 -''a C2"
+_ptm2 = use "test C1 || test C2", not "test C1 -''o C2"
+# Using test's -a and -o operators is not portable.
+# We prefer test over [, since the latter is spelled [[ in configure.ac.
+sc_prohibit_test_minus_ao:
+	@prohibit='(\<test| \[+) .+ -[ao] '				\
+	halt='$(_ptm1); $(_ptm2)'					\
+	  $(_sc_search_regexp)

 # Each program that uses proper_name_utf8 must link with one of the
 # ICONV libraries.  Otherwise, some ICONV library must appear in LDADD.
@ -596,9 +827,9 @@ sc_proper_name_utf8_requires_ICONV:
 # Warn about "c0nst struct Foo const foo[]",
 # but not about "char const *const foo" or "#define const const".
 sc_redundant_const:
-	@re='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'		\
-	msg='redundant "const" in declarations'				\
-	  $(_prohibit_regexp)
+	@prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'		\
+	halt='redundant "const" in declarations'			\
+	  $(_sc_search_regexp)

 sc_const_long_option:
 	@grep '^ *static.*struct option ' $$($(VC_LIST_EXCEPT))		\
@ -652,16 +883,16 @@ news-check: NEWS
 	fi

 sc_makefile_TAB_only_indentation:
-	@grep -nE '^	[ ]{8}'						\
-	    $$($(VC_LIST_EXCEPT) | grep -E 'akefile|\.mk$$')		\
-	  && { echo '$(ME): found TAB-8-space indentation' 1>&2;	\
-	       exit 1; } || :
+	@prohibit='^	[ ]{8}'						\
+	in_vc_files='akefile|\.mk$$'					\
+	halt='found TAB-8-space indentation'				\
+	  $(_sc_search_regexp)

 sc_m4_quote_check:
-	@grep -nE '(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]'		\
-	    $$($(VC_LIST_EXCEPT) | grep -E '(^configure\.ac|\.m4)$$')	\
-	  && { echo '$(ME): quote the first arg to AC_DEF*' 1>&2;	\
-	       exit 1; } || :
+	@prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]'		\
+	in_vc_files='(^configure\.ac|\.m4)$$'				\
+	halt='quote the first arg to AC_DEF*'				\
+	  $(_sc_search_regexp)

 fix_po_file_diag = \
 'you have changed the set of files with translatable diagnostics;\n\
@ -700,9 +931,10 @@ sc_po_check:
 # path separator of `:', but rather the automake-provided `$(PATH_SEPARATOR)'.
 msg = '$(ME): Do not use `:'\'' above; use $$(PATH_SEPARATOR) instead'
 sc_makefile_path_separator_check:
-	@grep -nE 'PATH[=].*:'						\
-	    $$($(VC_LIST_EXCEPT) | grep -E 'akefile|\.mk$$')		\
-	  && { echo $(msg) 1>&2; exit 1; } || :
+	@prohibit='PATH[=].*:'						\
+	in_vc_files='akefile|\.mk$$'					\
+	halt=$(msg)							\
+	  $(_sc_search_regexp)

 # Check that `make alpha' will not fail at the end of the process.
 writable-files:
@ -722,23 +954,43 @@ texi = doc/$(PACKAGE).texi
 # Make sure that the copyright date in $(v_etc_file) is up to date.
 # Do the same for the $(sample-test) and the main doc/.texi file.
 sc_copyright_check:
-	@if test -f $(v_etc_file); then					\
-	  grep 'enum { COPYRIGHT_YEAR = '$$(date +%Y)' };' $(v_etc_file) \
-	    >/dev/null							\
-	  || { echo 'out of date copyright in $(v_etc_file); update it' 1>&2; \
-	       exit 1; };						\
-	fi
-	@if test -f $(sample-test); then				\
-	  grep '# Copyright (C) '$$(date +%Y)' Free' $(sample-test)	\
-	    >/dev/null							\
-	  || { echo 'out of date copyright in $(sample-test); update it' 1>&2; \
-	       exit 1; };						\
-	fi
-	@if test -f $(texi); then					\
-	  grep 'Copyright @copyright{} .*'$$(date +%Y)' Free' $(texi)	\
-	    >/dev/null							\
-	  || { echo 'out of date copyright in $(texi); update it' 1>&2;	\
-	       exit 1; };						\
+	@require='enum { COPYRIGHT_YEAR = '$$(date +%Y)' };'		\
+	in_files=$(v_etc_file)						\
+	halt='out of date copyright in $(v_etc_file); update it'	\
+	  $(_sc_search_regexp)
+	@require='# Copyright \(C\) '$$(date +%Y)' Free'		\
+	in_vc_files=$(sample-test)					\
+	halt='out of date copyright in $(sample-test); update it'	\
+	  $(_sc_search_regexp)
+	@require='Copyright @copyright\{\} .*'$$(date +%Y)' Free'	\
+	in_vc_files=$(texi)						\
+	halt='out of date copyright in $(texi); update it'		\
+	  $(_sc_search_regexp)
+
+# If tests/help-version exists and seems to be new enough, assume that its
+# use of init.sh and path_prepend_ is correct, and ensure that every other
+# use of init.sh is identical.
+# This is useful because help-version cross-checks prog --version
+# with $(VERSION), which verifies that its path_prepend_ invocation
+# sets PATH correctly.  This is an inexpensive way to ensure that
+# the other init.sh-using tests also get it right.
+_hv_file ?= $(srcdir)/tests/help-version
+_hv_regex_weak ?= ^ *\. .*/init\.sh"
+_hv_regex_strong ?= ^ *\. "\$${srcdir=\.}/init\.sh"
+sc_cross_check_PATH_usage_in_tests:
+	@if test -f $(_hv_file); then					\
+	  grep -l 'VERSION mismatch' $(_hv_file) >/dev/null		\
+	    || { echo "$@: skipped: no such file: $(_hv_file)" 1>&2;	\
+		 exit 0; };						\
+	  grep -lE '$(_hv_regex_strong)' $(_hv_file) >/dev/null		\
+	    || { echo "$@: $(_hv_file) lacks conforming use of init.sh" 1>&2; \
+		 exit 1; };						\
+	  good=$$(grep -E '$(_hv_regex_strong)' $(_hv_file));		\
+	  grep -LFx "$$good"						\
+		$$(grep -lE '$(_hv_regex_weak)' $$($(VC_LIST_EXCEPT)))	\
+	      | grep . &&						\
+	    { echo "$(ME): the above files use path_prepend_ inconsistently" \
+		1>&2; exit 1; } || :;					\
 	fi

 # #if HAVE_... will evaluate to false for any non numeric string.
@ -746,21 +998,18 @@ sc_copyright_check:
 # tests many undefined macros, and so we can't enable that option.
 # So at least preclude common boolean strings as macro values.
 sc_Wundef_boolean:
-	@grep -Ei '^#define.*(yes|no|true|false)$$' '$(CONFIG_INCLUDE)' && \
-	  { echo 'Use 0 or 1 for macro values' 1>&2; exit 1; } || :
+	@prohibit='^#define.*(yes|no|true|false)$$'			\
+	in_files='$(CONFIG_INCLUDE)'					\
+	halt='Use 0 or 1 for macro values'				\
+	  $(_sc_search_regexp)

 sc_vulnerable_makefile_CVE-2009-4029:
-	@files=$$(find $(srcdir) -name Makefile.in);			\
-	if test -n "$$files"; then					\
-	  grep -E							\
-	    'perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)'	\
-	    $$files &&							\
-	  { echo '$(ME): the above files are vulnerable; beware of'	\
-	    'running "make dist*" rules, and upgrade to fixed automake'	\
-	    'see http://bugzilla.redhat.com/542609 for details'		\
-		1>&2; exit 1; } || :;					\
-	else :;								\
-	fi
+	@prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
+	in_files=$$(find $(srcdir) -name Makefile.in)			\
+	halt='the above files are vulnerable; beware of running\n'\
+'"make dist*" rules, and upgrade to fixed automake\n'\
+'see http://bugzilla.redhat.com/542609 for details'			\
+	  $(_sc_search_regexp)

 vc-diff-check:
 	(unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
@ -785,8 +1034,16 @@ gpg_key_ID ?= \
     && gpgv .ann-sig - < /dev/null 2>&1 \
 	  | sed -n '/.*key ID \([0-9A-F]*\)/s//\1/p'; rm -f .ann-sig)

+translation_project_ ?= coordinator@translationproject.org
+announcement_Cc_ ?= $(translation_project_), $(PACKAGE_BUGREPORT)
+announcement_mail_headers_ ?=						\
+To: info-gnu@gnu.org							\
+Cc: $(announcement_Cc_)							\
+Mail-Followup-To: $(PACKAGE_BUGREPORT)
+
 announcement: NEWS ChangeLog $(rel-files)
 	@$(build_aux)/announce-gen					\
+	    --mail-headers='$(announcement_mail_headers_)'		\
 	    --release-type=$(RELEASE_TYPE)				\
 	    --package=$(PACKAGE)					\
 	    --prev=$(PREV_VERSION)					\
@ -870,12 +1127,17 @@ release-prep:
 	$(VC) commit -F .ci-msg -a
 	rm .ci-msg

+# Override this with e.g., -s $(srcdir)/some_other_name.texi
+# if the default $(PACKAGE)-derived name doesn't apply.
+gendocs_options_ ?=
+
 .PHONY: web-manual
 web-manual:
 	@test -z "$(manual_title)" \
 	  && { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
 	@cd '$(srcdir)/doc'; \
-	  $(SHELL) ../build-aux/gendocs.sh -o '$(abs_builddir)/doc/manual' \
+	  $(SHELL) ../build-aux/gendocs.sh $(gendocs_options_) \
+	     -o '$(abs_builddir)/doc/manual' \
 	     --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
 	    "$(PACKAGE_NAME) - $(manual_title)"
 	@echo " *** Upload the doc/manual directory to web-cvs."
@ -917,10 +1179,12 @@ refresh-po:
 	echo 'en@quot' >> $(PODIR)/LINGUAS && \
 	ls $(PODIR)/*.po | sed 's/\.po//' | sed 's,$(PODIR)/,,' | sort >> $(PODIR)/LINGUAS

+ # Running indent once is not idempotent, but running it twice is.
 INDENT_SOURCES ?= $(C_SOURCES)
 .PHONY: indent
 indent:
 	indent $(INDENT_SOURCES)
+	indent $(INDENT_SOURCES)

 # If you want to set UPDATE_COPYRIGHT_* environment variables,
 # put the assignments in this variable.