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Re: [libvirt] [PATCH libvirt-glib 15/15] Add files for 'make syntax-check' rules from GNULIB



Hmm not sure what to review in there, let's ACK it and see what breaks :)

Christophe

On Thu, Dec 01, 2011 at 02:05:43PM +0000, Daniel P. Berrange wrote:
> From: "Daniel P. Berrange" <berrange redhat com>
> 
> The 'syntax-check' rule validates various coding style requirements.
> It is run as part of the regular automated builds
> 
> * GNUmakefile, maint.mk: syntax-check rules (from GNULIB)
> * cfg.mk: Local extra rules & exclusions
> * build-aux/useless-if-before-free,
>   build-aux/vc-list-files: Helpers for syntax check (from
>   GNULIB)
> * autobuild.sh: Run syntax-check as part of build
> * configure.ac: Ensure GNUmakefile exists in VPATH builds
> ---
>  GNUmakefile                      |  132 ++++
>  autobuild.sh                     |   13 +
>  build-aux/useless-if-before-free |  207 ++++++
>  build-aux/vc-list-files          |  113 +++
>  cfg.mk                           |  137 ++++
>  configure.ac                     |   11 +
>  maint.mk                         | 1511 ++++++++++++++++++++++++++++++++++++++
>  7 files changed, 2124 insertions(+), 0 deletions(-)
>  create mode 100644 GNUmakefile
>  create mode 100755 build-aux/useless-if-before-free
>  create mode 100755 build-aux/vc-list-files
>  create mode 100644 cfg.mk
>  create mode 100644 maint.mk
> 
> diff --git a/GNUmakefile b/GNUmakefile
> new file mode 100644
> index 0000000..ca88b6b
> --- /dev/null
> +++ b/GNUmakefile
> @@ -0,0 +1,132 @@
> +# Having a separate GNUmakefile lets me `include' the dynamically
> +# generated rules created via cfg.mk (package-local configuration)
> +# as well as maint.mk (generic maintainer rules).
> +# This makefile is used only if you run GNU Make.
> +# It is necessary if you want to build targets usually of interest
> +# only to the maintainer.
> +
> +# Copyright (C) 2001, 2003, 2006-2011 Free Software Foundation, Inc.
> +
> +# This program is free software: you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation, either version 3 of the License, or
> +# (at your option) any later version.
> +
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +
> +# You should have received a copy of the GNU General Public License
> +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
> +
> +# Systems where /bin/sh is not the default shell need this.  The $(shell)
> +# command below won't work with e.g. stock DOS/Windows shells.
> +ifeq ($(wildcard /bin/s[h]),/bin/sh)
> +SHELL = /bin/sh
> +else
> +# will be used only with the next shell-test line, then overwritten
> +# by a configured-in value
> +SHELL = sh
> +endif
> +
> +# If the user runs GNU make but has not yet run ./configure,
> +# give them a diagnostic.
> +_have-Makefile := $(shell test -f Makefile && echo yes)
> +ifeq ($(_have-Makefile),yes)
> +
> +# Make tar archive easier to reproduce.
> +export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner
> +
> +# Allow the user to add to this in the Makefile.
> +ALL_RECURSIVE_TARGETS =
> +
> +include Makefile
> +
> +# Some projects override e.g., _autoreconf here.
> +-include $(srcdir)/cfg.mk
> +
> +# Allow cfg.mk to override these.
> +_build-aux ?= build-aux
> +_autoreconf ?= autoreconf -v
> +
> +include $(srcdir)/maint.mk
> +
> +# Ensure that $(VERSION) is up to date for dist-related targets, but not
> +# for others: rerunning autoreconf and recompiling everything isn't cheap.
> +_have-git-version-gen := \
> +  $(shell test -f $(srcdir)/$(_build-aux)/git-version-gen && echo yes)
> +ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL))
> +  _is-dist-target ?= $(filter-out %clean, \
> +    $(filter maintainer-% dist% alpha beta stable,$(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			\
> +                         $(git-version-gen-tag-sed-script))
> +    ifneq ($(_curr-ver),$(VERSION))
> +      ifeq ($(_curr-ver),UNKNOWN)
> +        $(info WARNING: unable to verify if $(VERSION) is the correct version)
> +      else
> +        ifneq (,$(_is-install-target))
> +          # GNU Coding Standards state that 'make install' should not cause
> +          # recompilation after 'make all'.  But as long as changing the version
> +          # string alters config.h, the cost of having 'make all' always have an
> +          # up-to-date version is prohibitive.  So, as a compromise, we merely
> +          # warn when installing a version string that is out of date; the user
> +          # should run 'autoreconf' (or something like 'make distcheck') to
> +          # fix the version, 'make all' to propagate it, then 'make install'.
> +          $(info WARNING: version string $(VERSION) is out of date;)
> +          $(info run '$(MAKE) _version' to fix it)
> +        else
> +          $(info INFO: running autoreconf for new version string: $(_curr-ver))
> +GNUmakefile: _version
> +	touch GNUmakefile
> +        endif
> +      endif
> +    endif
> +  endif
> +endif
> +
> +.PHONY: _version
> +_version:
> +	cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf)
> +	$(MAKE) $(AM_MAKEFLAGS) Makefile
> +
> +else
> +
> +.DEFAULT_GOAL := abort-due-to-no-makefile
> +srcdir = .
> +
> +# The package can override .DEFAULT_GOAL to run actions like autoreconf.
> +-include ./cfg.mk
> +include ./maint.mk
> +
> +ifeq ($(.DEFAULT_GOAL),abort-due-to-no-makefile)
> +$(MAKECMDGOALS): abort-due-to-no-makefile
> +endif
> +
> +abort-due-to-no-makefile:
> +	@echo There seems to be no Makefile in this directory.   1>&2
> +	@echo "You must run ./configure before running \`make'." 1>&2
> +	@exit 1
> +
> +endif
> +
> +# Tell version 3.79 and up of GNU make to not build goals in this
> +# directory in parallel, in case someone tries to build multiple
> +# targets, and one of them can cause a recursive target to be invoked.
> +
> +# Only set this if Automake doesn't provide it.
> +AM_RECURSIVE_TARGETS ?= $(RECURSIVE_TARGETS:-recursive=) \
> +  $(RECURSIVE_CLEAN_TARGETS:-recursive=) \
> +  dist distcheck tags ctags
> +
> +ALL_RECURSIVE_TARGETS += $(AM_RECURSIVE_TARGETS)
> +
> +ifneq ($(word 2, $(MAKECMDGOALS)), )
> +ifneq ($(filter $(ALL_RECURSIVE_TARGETS), $(MAKECMDGOALS)), )
> +.NOTPARALLEL:
> +endif
> +endif
> diff --git a/autobuild.sh b/autobuild.sh
> index 0ec44d7..6e9e716 100755
> --- a/autobuild.sh
> +++ b/autobuild.sh
> @@ -3,6 +3,9 @@
>  set -e
>  set -v
>  
> +test -n "$1" && RESULTS=$1 || RESULTS=results.log
> +: ${AUTOBUILD_INSTALL_ROOT=$HOME/builder}
> +
>  # Make things clean.
>  test -f Makefile && make -k distclean || :
>  
> @@ -16,6 +19,16 @@ cd build
>  make
>  make install
>  
> +# set -o pipefail is a bashism; this use of exec is the POSIX alternative
> +exec 3>&1
> +st=$(
> +  exec 4>&1 >&3
> +  { make check syntax-check 2>&1 3>&- 4>&-; echo $? >&4; } | tee "$RESULTS"
> +)
> +exec 3>&-
> +test "$st" = 0
> +
> +
>  rm -f *.tar.gz
>  make dist
>  
> diff --git a/build-aux/useless-if-before-free b/build-aux/useless-if-before-free
> new file mode 100755
> index 0000000..b8f5a26
> --- /dev/null
> +++ b/build-aux/useless-if-before-free
> @@ -0,0 +1,207 @@
> +eval '(exit $?0)' && eval 'exec perl -wST "$0" ${1+"$@"}'
> +  & eval 'exec perl -wST "$0" $argv:q'
> +    if 0;
> +# Detect instances of "if (p) free (p);".
> +# Likewise "if (p != 0)", "if (0 != p)", or with NULL; and with braces.
> +
> +my $VERSION = '2011-04-20 13:43'; # 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
> +# do its job.  Otherwise, update this string manually.
> +
> +# Copyright (C) 2008-2011 Free Software Foundation, Inc.
> +
> +# This program is free software: you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation, either version 3 of the License, or
> +# (at your option) any later version.
> +
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +
> +# You should have received a copy of the GNU General Public License
> +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
> +
> +# Written by Jim Meyering
> +
> +use strict;
> +use warnings;
> +use Getopt::Long;
> +
> +(my $ME = $0) =~ s|.*/||;
> +
> +# use File::Coda; # http://meyering.net/code/Coda/
> +END {
> +  defined fileno STDOUT or return;
> +  close STDOUT and return;
> +  warn "$ME: failed to close standard output: $!\n";
> +  $? ||= 1;
> +}
> +
> +sub usage ($)
> +{
> +  my ($exit_code) = @_;
> +  my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
> +  if ($exit_code != 0)
> +    {
> +      print $STREAM "Try `$ME --help' for more information.\n";
> +    }
> +  else
> +    {
> +      print $STREAM <<EOF;
> +Usage: $ME [OPTIONS] FILE...
> +
> +Detect any instance in FILE of a useless "if" test before a free call, e.g.,
> +"if (p) free (p);".  Any such test may be safely removed without affecting
> +the semantics of the C code in FILE.  Use --name=FOO --name=BAR to also
> +detect free-like functions named FOO and BAR.
> +
> +OPTIONS:
> +
> +   --list       print only the name of each matching FILE (\\0-terminated)
> +   --name=N     add name N to the list of \`free\'-like functions to detect;
> +                  may be repeated
> +
> +   --help       display this help and exit
> +   --version    output version information and exit
> +
> +Exit status:
> +
> +  0   one or more matches
> +  1   no match
> +  2   an error
> +
> +EXAMPLE:
> +
> +For example, this command prints all removable "if" tests before "free"
> +and "kfree" calls in the linux kernel sources:
> +
> +    git ls-files -z |xargs -0 $ME --name=kfree
> +
> +EOF
> +    }
> +  exit $exit_code;
> +}
> +
> +sub is_NULL ($)
> +{
> +  my ($expr) = @_;
> +  return ($expr eq 'NULL' || $expr eq '0');
> +}
> +
> +{
> +  sub EXIT_MATCH {0}
> +  sub EXIT_NO_MATCH {1}
> +  sub EXIT_ERROR {2}
> +  my $err = EXIT_NO_MATCH;
> +
> +  my $list;
> +  my @name = qw(free);
> +  GetOptions
> +    (
> +     help => sub { usage 0 },
> +     version => sub { print "$ME version $VERSION\n"; exit },
> +     list => \$list,
> +     'name=s@' => \ name,
> +    ) or usage 1;
> +
> +  # Make sure we have the right number of non-option arguments.
> +  # Always tell the user why we fail.
> +  @ARGV < 1
> +    and (warn "$ME: missing FILE argument\n"), usage EXIT_ERROR;
> +
> +  my $or = join '|', @name;
> +  my $regexp = qr/(?:$or)/;
> +
> +  # Set the input record separator.
> +  # Note: this makes it impractical to print line numbers.
> +  $/ = '"';
> +
> +  my $found_match = 0;
> + FILE:
> +  foreach my $file (@ARGV)
> +    {
> +      open FH, '<', $file
> +        or (warn "$ME: can't open `$file' for reading: $!\n"),
> +          $err = EXIT_ERROR, next;
> +      while (defined (my $line = <FH>))
> +        {
> +          while ($line =~
> +              /\b(if\s*\(\s*([^)]+?)(?:\s*!=\s*([^)]+?))?\s*\)
> +              #  1          2                  3
> +               (?:   \s*$regexp\s*\((?:\s*\([^)]+\))?\s*([^)]+)\)\s*;|
> +                \s*\{\s*$regexp\s*\((?:\s*\([^)]+\))?\s*([^)]+)\)\s*;\s*\}))/sxg)
> +            {
> +              my $all = $1;
> +              my ($lhs, $rhs) = ($2, $3);
> +              my ($free_opnd, $braced_free_opnd) = ($4, $5);
> +              my $non_NULL;
> +              if (!defined $rhs) { $non_NULL = $lhs }
> +              elsif (is_NULL $rhs) { $non_NULL = $lhs }
> +              elsif (is_NULL $lhs) { $non_NULL = $rhs }
> +              else { next }
> +
> +              # Compare the non-NULL part of the "if" expression and the
> +              # free'd expression, without regard to white space.
> +              $non_NULL =~ tr/ \t//d;
> +              my $e2 = defined $free_opnd ? $free_opnd : $braced_free_opnd;
> +              $e2 =~ tr/ \t//d;
> +              if ($non_NULL eq $e2)
> +                {
> +                  $found_match = 1;
> +                  $list
> +                    and (print "$file\0"), next FILE;
> +                  print "$file: $all\n";
> +                }
> +            }
> +        }
> +    }
> +  continue
> +    {
> +      close FH;
> +    }
> +
> +  $found_match && $err == EXIT_NO_MATCH
> +    and $err = EXIT_MATCH;
> +
> +  exit $err;
> +}
> +
> +my $foo = <<'EOF';
> +# The above is to *find* them.
> +# This adjusts them, removing the unnecessary "if (p)" part.
> +
> +# FIXME: do something like this as an option (doesn't do braces):
> +free=xfree
> +git grep -l -z "$free *(" \
> +  | xargs -0 useless-if-before-free -l --name="$free" \
> +  | xargs -0 perl -0x3b -pi -e \
> +   's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*(?:0|NULL))?\s*\)\s+('"$free"'\s*\((?:\s*\([^)]+\))?\s*\1\s*\)\s*;)/$2/s'
> +
> +# Use the following to remove redundant uses of kfree inside braces.
> +# Note that -0777 puts perl in slurp-whole-file mode;
> +# but we have plenty of memory, these days...
> +free=kfree
> +git grep -l -z "$free *(" \
> +  | xargs -0 useless-if-before-free -l --name="$free" \
> +  | xargs -0 perl -0777 -pi -e \
> +     's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*(?:0|NULL))?\s*\)\s*\{\s*('"$free"'\s*\((?:\s*\([^)]+\))?\s*\1\s*\);)\s*\}[^\n]*$/$2/gms'
> +
> +Be careful that the result of the above transformation is valid.
> +If the matched string is followed by "else", then obviously, it won't be.
> +
> +When modifying files, refuse to process anything other than a regular file.
> +EOF
> +
> +## Local Variables:
> +## mode: perl
> +## indent-tabs-mode: nil
> +## eval: (add-hook 'write-file-hooks 'time-stamp)
> +## time-stamp-start: "my $VERSION = '"
> +## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
> +## time-stamp-time-zone: "UTC"
> +## time-stamp-end: "'; # UTC"
> +## End:
> diff --git a/build-aux/vc-list-files b/build-aux/vc-list-files
> new file mode 100755
> index 0000000..405e458
> --- /dev/null
> +++ b/build-aux/vc-list-files
> @@ -0,0 +1,113 @@
> +#!/bin/sh
> +# List version-controlled file names.
> +
> +# Print a version string.
> +scriptversion=2011-05-16.22; # UTC
> +
> +# Copyright (C) 2006-2011 Free Software Foundation, Inc.
> +
> +# This program is free software: you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation, either version 3 of the License, or
> +# (at your option) any later version.
> +
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +
> +# You should have received a copy of the GNU General Public License
> +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
> +
> +
> +# List the specified version-controlled files.
> +# With no argument, list them all.  With a single DIRECTORY argument,
> +# list the version-controlled files in that directory.
> +
> +# If there's an argument, it must be a single, "."-relative directory name.
> +# cvsu is part of the cvsutils package: http://www.red-bean.com/cvsutils/
> +
> +postprocess=
> +case $1 in
> +  --help) cat <<EOF
> +Usage: $0 [-C SRCDIR] [DIR...]
> +
> +Output a list of version-controlled files in DIR (default .), relative to
> +SRCDIR (default .).  SRCDIR must be the top directory of a checkout.
> +
> +Options:
> +  --help     print this help, then exit
> +  --version  print version number, then exit
> +  -C SRCDIR  change directory to SRCDIR before generating list
> +
> +Report bugs and patches to <bug-gnulib gnu org>.
> +EOF
> +    exit ;;
> +
> +  --version)
> +    year=`echo "$scriptversion" | sed 's/[^0-9].*//'`
> +    cat <<EOF
> +vc-list-files $scriptversion
> +Copyright (C) $year Free Software Foundation, Inc,
> +License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> +This is free software: you are free to change and redistribute it.
> +There is NO WARRANTY, to the extent permitted by law.
> +EOF
> +    exit ;;
> +
> +  -C)
> +    test "$2" = . || postprocess="| sed 's|^|$2/|'"
> +    cd "$2" || exit 1
> +    shift; shift ;;
> +esac
> +
> +test $# = 0 && set .
> +
> +for dir
> +do
> +  if test -d .git; then
> +    test "x$dir" = x. \
> +      && dir= sed_esc= \
> +      || { dir="$dir/"; sed_esc=`echo "$dir"|env sed 's,\([\\/]\),\\\\\1,g'`; }
> +    # Ignore git symlinks - either they point into the tree, in which case
> +    # we don't need to visit the target twice, or they point somewhere
> +    # else (often into a submodule), in which case the content does not
> +    # belong to this package.
> +    eval exec git ls-tree -r 'HEAD:"$dir"' \
> +      \| sed -n '"s/^100[^	]*./$sed_esc/p"' $postprocess
> +  elif test -d .hg; then
> +    eval exec hg locate '"$dir/*"' $postprocess
> +  elif test -d .bzr; then
> +    test "$postprocess" = '' && postprocess="| sed 's|^\./||'"
> +    eval exec bzr ls -R --versioned '"$dir"' $postprocess
> +  elif test -d CVS; then
> +    test "$postprocess" = '' && postprocess="| sed 's|^\./||'"
> +    if test -x build-aux/cvsu; then
> +      eval build-aux/cvsu --find --types=AFGM '"$dir"' $postprocess
> +    elif (cvsu --help) >/dev/null 2>&1; then
> +      eval cvsu --find --types=AFGM '"$dir"' $postprocess
> +    else
> +      eval awk -F/ \''{			\
> +          if (!$1 && $3 !~ /^-/) {	\
> +            f=FILENAME;			\
> +            if (f ~ /CVS\/Entries$/)	\
> +              f = substr(f, 1, length(f)-11); \
> +            print f $2;			\
> +          }}'\''				\
> +        `find "$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
> +  fi
> +done
> +
> +# Local variables:
> +# eval: (add-hook 'write-file-hooks 'time-stamp)
> +# time-stamp-start: "scriptversion="
> +# time-stamp-format: "%:y-%02m-%02d.%02H"
> +# time-stamp-time-zone: "UTC"
> +# time-stamp-end: "; # UTC"
> +# End:
> diff --git a/cfg.mk b/cfg.mk
> new file mode 100644
> index 0000000..ed46aee
> --- /dev/null
> +++ b/cfg.mk
> @@ -0,0 +1,137 @@
> +# Customize Makefile.maint.                           -*- makefile -*-
> +# Copyright (C) 2008-2011 Red Hat, Inc.
> +# Copyright (C) 2003-2008 Free Software Foundation, Inc.
> +
> +# This program is free software: you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation, either version 3 of the License, or
> +# (at your option) any later version.
> +
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +
> +# You should have received a copy of the GNU General Public License
> +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
> +
> +# Tests not to run as part of "make distcheck".
> +local-checks-to-skip =			\
> +  changelog-check			\
> +  check-AUTHORS				\
> +  makefile-check			\
> +  makefile_path_separator_check		\
> +  patch-check				\
> +  sc_GPL_version			\
> +  sc_always_defined_macros		\
> +  sc_cast_of_alloca_return_value	\
> +  sc_cross_check_PATH_usage_in_tests	\
> +  sc_dd_max_sym_length			\
> +  sc_error_exit_success			\
> +  sc_file_system			\
> +  sc_immutable_NEWS			\
> +  sc_makefile_path_separator_check	\
> +  sc_obsolete_symbols			\
> +  sc_prohibit_always_true_header_tests  \
> +  sc_prohibit_S_IS_definition		\
> +  sc_prohibit_atoi_atof			\
> +  sc_prohibit_hash_without_use		\
> +  sc_prohibit_jm_in_m4			\
> +  sc_prohibit_quote_without_use		\
> +  sc_prohibit_quotearg_without_use	\
> +  sc_prohibit_stat_st_blocks		\
> +  sc_root_tests				\
> +  sc_space_tab				\
> +  sc_sun_os_names			\
> +  sc_system_h_headers			\
> +  sc_texinfo_acronym			\
> +  sc_tight_scope			\
> +  sc_two_space_separator_in_usage	\
> +  sc_error_message_uppercase		\
> +  sc_program_name			\
> +  sc_require_test_exit_idiom		\
> +  sc_makefile_check			\
> +  sc_useless_cpp_parens
> +
> +# Files that should never cause syntax check failures.
> +VC_LIST_ALWAYS_EXCLUDE_REGEX = \
> +  (^HACKING|\.po|maint.mk)$$
> +
> +# Functions like free() that are no-ops on NULL arguments.
> +useless_free_options =				\
> +  --name=g_free					\
> +  --name=xmlBufferFree				\
> +  --name=xmlFree				\
> +  --name=xmlFreeDoc				\
> +  --name=xmlXPathFreeContext			\
> +  --name=xmlXPathFreeObject
> +
> +# Ensure that no C source file, docs, or rng schema uses TABs for
> +# indentation.  Also match *.h.in files, to get libvirt.h.in.  Exclude
> +# files in gnulib, since they're imported.
> +space_indent_files=(\.(rng|s?[ch](\.in)?|html.in|py)|(daemon|tools)/.*\.in)
> +sc_TAB_in_indentation:
> +	@prohibit='^ *	'						\
> +	in_vc_files='$(space_indent_files)$$'				\
> +	halt='indent with space, not TAB, in C, sh, html, py, and RNG schemas' \
> +	  $(_sc_search_regexp)
> +
> +# G_GNUC_UNUSED should only be applied in implementations, not
> +# header declarations
> +sc_avoid_attribute_unused_in_header:
> +	@prohibit='^[^#]*G_GNUC_UNUSED([^:]|$$)'			\
> +	in_vc_files='\.h$$'						\
> +	halt='use G_GNUC_UNUSED in .c rather than .h files'		\
> +	  $(_sc_search_regexp)
> +
> +# Enforce recommended preprocessor indentation style.
> +sc_preprocessor_indentation:
> +	@if cppi --version >/dev/null 2>&1; then			\
> +	  $(VC_LIST_EXCEPT) | grep '\.[ch]$$' | xargs cppi -a -c	\
> +	    || { echo '$(ME): incorrect preprocessor indentation' 1>&2;	\
> +		exit 1; };						\
> +	else								\
> +	  echo '$(ME): skipping test $@: cppi not installed' 1>&2;	\
> +	fi
> +
> +sc_copyright_format:
> +	@require='Copyright .*Red 'Hat', Inc\.'				\
> +	containing='Copyright .*Red 'Hat				\
> +	halt='Red Hat copyright is missing Inc.'			\
> +	  $(_sc_search_regexp)
> +	@prohibit='Copyright [^(].*Red 'Hat				\
> +	halt='consistently use (C) in Red Hat copyright'		\
> +	  $(_sc_search_regexp)
> +	@prohibit='\<Red''Hat\>'					\
> +	halt='spell Red Hat as two words'				\
> +	  $(_sc_search_regexp)
> +
> +# We don't use this feature of maint.mk.
> +prev_version_file = /dev/null
> +
> +# Give credit where due:
> +# Ensure that each commit author email address (possibly mapped via
> +# git log's .mailmap) appears in our AUTHORS file.
> +sc_check_author_list:
> +	@fail=0;							\
> +	for i in $$(git log --pretty=format:%aE%n|sort -u|grep -v '^$$'); do \
> +	  sanitized=$$(echo "$$i"|LC_ALL=C sed 's/\([^a-zA-Z0-9_ -]\)/\\\1/g'); \
> +	  grep -iq "<$$sanitized>" $(srcdir)/AUTHORS			\
> +	    || { printf '%s\n' "$$i" >&2; fail=1; };			\
> +	done;								\
> +	test $$fail = 1							\
> +	  && echo '$(ME): committer(s) not listed in AUTHORS' >&2;	\
> +	test $$fail = 0
> +
> +
> +exclude_file_name_regexp--sc_bindtextdomain = ^(libvirt-gconfig/tests|examples)/
> +
> +exclude_file_name_regexp--sc_preprocessor_indentation = ^*/*.[ch]
> +
> +exclude_file_name_regexp--sc_prohibit_strcmp = ^*/*.[ch]
> +
> +exclude_file_name_regexp--sc_require_config_h = python/libvirt-glib.c
> +exclude_file_name_regexp--sc_require_config_h_first = python/libvirt-glib.c
> +
> +# XXX we shouldn't really ignore this, but the horrible enum rules...
> +exclude_file_name_regexp--sc_makefile_at_at_check = libvirt-gobject/Makefile.am
> diff --git a/configure.ac b/configure.ac
> index 805cd9b..260d581 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -40,6 +40,17 @@ dnl AC_CONFIG_LIBOBJ_DIR([src])
>  
>  AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions])
>  
> +# Autoconf 2.61a.99 and earlier don't support linking a file only
> +# in VPATH builds.  But since GNUmakefile is for maintainer use
> +# only, it does not matter if we skip the link with older autoconf.
> +# Automake 1.10.1 and earlier try to remove GNUmakefile in non-VPATH
> +# builds, so use a shell variable to bypass this.
> +GNUmakefile=GNUmakefile
> +m4_if(m4_version_compare([2.61a.100],
> +        m4_defn([m4_PACKAGE_VERSION])), [1], [],
> +      [AC_CONFIG_LINKS([$GNUmakefile:$GNUmakefile], [],
> +        [GNUmakefile=$GNUmakefile])])
> +
>  LIBVIRT_GLIB_COMPILE_WARNINGS([maximum])
>  
>  PKG_CHECK_MODULES(LIBVIRT, libvirt >= $LIBVIRT_REQUIRED)
> diff --git a/maint.mk b/maint.mk
> new file mode 100644
> index 0000000..405c6d0
> --- /dev/null
> +++ b/maint.mk
> @@ -0,0 +1,1511 @@
> +# -*-Makefile-*-
> +# This Makefile fragment tries to be general-purpose enough to be
> +# used by many projects via the gnulib maintainer-makefile module.
> +
> +## Copyright (C) 2001-2011 Free Software Foundation, Inc.
> +##
> +## This program is free software: you can redistribute it and/or modify
> +## it under the terms of the GNU General Public License as published by
> +## the Free Software Foundation, either version 3 of the License, or
> +## (at your option) any later version.
> +##
> +## This program is distributed in the hope that it will be useful,
> +## but WITHOUT ANY WARRANTY; without even the implied warranty of
> +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +## GNU General Public License for more details.
> +##
> +## You should have received a copy of the GNU General Public License
> +## along with this program.  If not, see <http://www.gnu.org/licenses/>.
> +
> +# This is reported not to work with make-3.79.1
> +# ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
> +ME := maint.mk
> +
> +# Diagnostic for continued use of deprecated variable.
> +# Remove in 2013
> +ifneq ($(build_aux),)
> + $(error "$(ME): \
> +set $$(_build-aux) relative to $$(srcdir) instead of $$(build_aux)")
> +endif
> +
> +# Do not save the original name or timestamp in the .tar.gz file.
> +# Use --rsyncable if available.
> +gzip_rsyncable := \
> +  $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null \
> +    && printf %s --rsyncable)
> +GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
> +
> +GIT = git
> +VC = $(GIT)
> +
> +VC_LIST = $(srcdir)/$(_build-aux)/vc-list-files -C $(srcdir)
> +
> +# You can override this variable in cfg.mk to set your own regexp
> +# matching files to ignore.
> +VC_LIST_ALWAYS_EXCLUDE_REGEX ?= ^$$
> +
> +# This is to preprocess robustly the output of $(VC_LIST), so that even
> +# when $(srcdir) is a pathological name like "....", the leading sed command
> +# removes only the intended prefix.
> +_dot_escaped_srcdir = $(subst .,\.,$(srcdir))
> +
> +# Post-process $(VC_LIST) output, prepending $(srcdir)/, but only
> +# when $(srcdir) is not ".".
> +ifeq ($(srcdir),.)
> +_prepend_srcdir_prefix =
> +else
> +_prepend_srcdir_prefix = | sed 's|^|$(srcdir)/|'
> +endif
> +
> +# In order to be able to consistently filter "."-relative names,
> +# (i.e., with no $(srcdir) prefix), this definition is careful to
> +# remove any $(srcdir) prefix, and to restore what it removes.
> +_sc_excl = \
> +  $(if $(exclude_file_name_regexp--$@),$(exclude_file_name_regexp--$@),^$$)
> +VC_LIST_EXCEPT = \
> +  $(VC_LIST) | sed 's|^$(_dot_escaped_srcdir)/||' \
> +	| if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
> +	  else grep -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
> +	| grep -Ev -e '($(VC_LIST_ALWAYS_EXCLUDE_REGEX)|$(_sc_excl))' \
> +	$(_prepend_srcdir_prefix)
> +
> +ifeq ($(origin prev_version_file), undefined)
> +  prev_version_file = $(srcdir)/.prev-version
> +endif
> +
> +PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
> +VERSION_REGEXP = $(subst .,\.,$(VERSION))
> +PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
> +
> +ifeq ($(VC),$(GIT))
> +this-vc-tag = v$(VERSION)
> +this-vc-tag-regexp = v$(VERSION_REGEXP)
> +else
> +tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
> +tag-this-version = $(subst .,_,$(VERSION))
> +this-vc-tag = $(tag-package)-$(tag-this-version)
> +this-vc-tag-regexp = $(this-vc-tag)
> +endif
> +my_distdir = $(PACKAGE)-$(VERSION)
> +
> +# Old releases are stored here.
> +release_archive_dir ?= ../release
> +
> +# Override gnu_rel_host and url_dir_list in cfg.mk if these are not right.
> +# Use alpha.gnu.org for alpha and beta releases.
> +# Use ftp.gnu.org for stable releases.
> +gnu_ftp_host-alpha = alpha.gnu.org
> +gnu_ftp_host-beta = alpha.gnu.org
> +gnu_ftp_host-stable = ftp.gnu.org
> +gnu_rel_host ?= $(gnu_ftp_host-$(RELEASE_TYPE))
> +
> +ifeq ($(gnu_rel_host),ftp.gnu.org)
> +url_dir_list ?= http://ftpmirror.gnu.org/$(PACKAGE)
> +else
> +url_dir_list ?= ftp://$(gnu_rel_host)/gnu/$(PACKAGE)
> +endif
> +
> +# Override this in cfg.mk if you are using a different format in your
> +# NEWS file.
> +today = $(shell date +%Y-%m-%d)
> +
> +# Select which lines of NEWS are searched for $(news-check-regexp).
> +# This is a sed line number spec.  The default says that we search
> +# lines 1..10 of NEWS for $(news-check-regexp).
> +# If you want to search only line 3 or only lines 20-22, use "3" or "20,22".
> +news-check-lines-spec ?= 1,10
> +news-check-regexp ?= '^\*.* $(VERSION_REGEXP) \($(today)\)'
> +
> +# Prevent programs like 'sort' from considering distinct strings to be equal.
> +# Doing it here saves us from having to set LC_ALL elsewhere in this file.
> +export LC_ALL = C
> +
> +## --------------- ##
> +## Sanity checks.  ##
> +## --------------- ##
> +
> +_cfg_mk := $(shell test -f $(srcdir)/cfg.mk && echo '$(srcdir)/cfg.mk')
> +
> +# Collect the names of rules starting with `sc_'.
> +syntax-check-rules := $(sort $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' \
> +			$(srcdir)/$(ME) $(_cfg_mk)))
> +.PHONY: $(syntax-check-rules)
> +
> +ifeq ($(shell $(VC_LIST) >/dev/null 2>&1; echo $$?),0)
> +local-checks-available += $(syntax-check-rules)
> +else
> +local-checks-available += no-vc-detected
> +no-vc-detected:
> +	@echo "No version control files detected; skipping syntax check"
> +endif
> +.PHONY: $(local-checks-available)
> +
> +# Arrange to print the name of each syntax-checking rule just before running it.
> +$(syntax-check-rules): %: %.m
> +sc_m_rules_ = $(patsubst %, %.m, $(syntax-check-rules))
> +.PHONY: $(sc_m_rules_)
> +$(sc_m_rules_):
> +	@echo $(patsubst sc_%.m, %, $@)
> +	@date +%s.%N > .sc-start-$(basename $@)
> +
> +# Compute and print the elapsed time for each syntax-check rule.
> +sc_z_rules_ = $(patsubst %, %.z, $(syntax-check-rules))
> +.PHONY: $(sc_z_rules_)
> +$(sc_z_rules_): %.z: %
> +	@end=$$(date +%s.%N);						\
> +	start=$$(cat .sc-start-$*);					\
> +	rm -f .sc-start-$*;						\
> +	awk -v s=$$start -v e=$$end					\
> +	  'END {printf "%.2f $(patsubst sc_%,%,$*)\n", e - s}' < /dev/null
> +
> +# The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
> +# that computes and prints elapsed time.
> +local-check :=								\
> +  $(patsubst sc_%, sc_%.z,						\
> +    $(filter-out $(local-checks-to-skip), $(local-checks-available)))
> +
> +syntax-check: $(local-check)
> +
> +# _sc_search_regexp
> +#
> +# This macro searches for a given construct in the selected files and
> +# then takes some action.
> +#
> +# Parameters (shell variables):
> +#
> +#  prohibit | require
> +#
> +#     Regular expression (ERE) denoting either a forbidden construct
> +#     or a required construct.  Those arguments are exclusive.
> +#
> +#  in_vc_files | in_files
> +#
> +#     grep-E-style regexp denoting the files to check.  If no files
> +#     are specified the default are all the files that are under
> +#     version control.
> +#
> +#  containing | non_containing
> +#
> +#     Select the files (non) containing strings matching this regexp.
> +#     If both arguments are specified then CONTAINING takes
> +#     precedence.
> +#
> +#  with_grep_options
> +#
> +#     Extra options for grep.
> +#
> +#  ignore_case
> +#
> +#     Ignore case.
> +#
> +#  halt
> +#
> +#     Message to display before to halting execution.
> +#
> +# Finally, you may exempt files based on an ERE matching file names.
> +# For example, to exempt from the sc_space_tab check all files with the
> +# .diff suffix, set this Make variable:
> +#
> +# exclude_file_name_regexp--sc_space_tab = \.diff$
> +#
> +# Note that while this functionality is mostly inherited via VC_LIST_EXCEPT,
> +# when filtering by name via in_files, we explicitly filter out matching
> +# names here as well.
> +
> +# By default, _sc_search_regexp does not ignore case.
> +export ignore_case =
> +_ignore_case = $$(test -n "$$ignore_case" && printf %s -i || :)
> +
> +define _sc_say_and_exit
> +   dummy=; : so we do not need a semicolon before each use;		\
> +   { printf '%s\n' "$(ME): $$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"			\
> +              | grep -Ev '$(exclude_file_name_regexp--$@)');		\
> +   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="$$halt" $(_sc_say_and_exit) } || :;			\
> +     fi									\
> +   else :;								\
> +   fi || :;
> +endef
> +
> +sc_avoid_if_before_free:
> +	@$(srcdir)/$(_build-aux)/useless-if-before-free			\
> +		$(useless_free_options)					\
> +	    $$($(VC_LIST_EXCEPT) | grep -v useless-if-before-free) &&	\
> +	  { echo '$(ME): found useless "if" before "free" above' 1>&2;	\
> +	    exit 1; } || :
> +
> +sc_cast_of_argument_to_free:
> +	@prohibit='\<free *\( *\(' halt='don'\''t cast free argument'	\
> +	  $(_sc_search_regexp)
> +
> +sc_cast_of_x_alloc_return_value:
> +	@prohibit='\*\) *x(m|c|re)alloc\>'				\
> +	halt='don'\''t cast x*alloc return value'			\
> +	  $(_sc_search_regexp)
> +
> +sc_cast_of_alloca_return_value:
> +	@prohibit='\*\) *alloca\>'					\
> +	halt='don'\''t cast alloca return value'			\
> +	  $(_sc_search_regexp)
> +
> +sc_space_tab:
> +	@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:
> +	@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:
> +	@grep -nE '! *str''cmp *\(|\<str''cmp *\(.+\) *[!=]='	\
> +	    $$($(VC_LIST_EXCEPT))					\
> +	  | grep -vE ':# *define STRN?EQ\(' &&				\
> +	  { echo '$(ME): replace str''cmp calls above with STREQ/STRNEQ' \
> +		1>&2; exit 1; } || :
> +
> +# Pass EXIT_*, not number, to usage, exit, and error (when exiting)
> +# Convert all uses automatically, via these two commands:
> +# git grep -l '\<exit *(1)' \
> +#  | grep -vEf .x-sc_prohibit_magic_number_exit \
> +#  | xargs --no-run-if-empty \
> +#      perl -pi -e 's/(^|[^.])\b(exit ?)\(1\)/$1$2(EXIT_FAILURE)/'
> +# git grep -l '\<exit *(0)' \
> +#  | grep -vEf .x-sc_prohibit_magic_number_exit \
> +#  | xargs --no-run-if-empty \
> +#      perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
> +sc_prohibit_magic_number_exit:
> +	@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:
> +	@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 *\(' $$($(VC_LIST_EXCEPT))		\
> +	    | grep -E '"Warning|"Fatal|"fatal' &&			\
> +	  { echo '$(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 *\(' $$($(VC_LIST_EXCEPT))		\
> +	    | grep -E '"[A-Z]'						\
> +	    | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' &&		\
> +	  { echo '$(ME): found capitalized error message' 1>&2;		\
> +	    exit 1; } || :
> +
> +# Error messages should not end with a period
> +sc_error_message_period:
> +	@grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))		\
> +	    | grep -E '[^."]\."' &&					\
> +	  { echo '$(ME): found error message ending in period' 1>&2;	\
> +	    exit 1; } || :
> +
> +sc_file_system:
> +	@prohibit=file''system						\
> +	ignore_case=1							\
> +	halt='found use of "file''system"; spell it "file system"'	\
> +	  $(_sc_search_regexp)
> +
> +# Don't use cpp tests of this symbol.  All code assumes config.h is included.
> +sc_prohibit_have_config_h:
> +	@prohibit='^# *if.*HAVE''_CONFIG_H'				\
> +	halt='found use of HAVE''_CONFIG_H; remove'			\
> +	  $(_sc_search_regexp)
> +
> +# Nearly all .c files must include <config.h>.  However, we also permit this
> +# via inclusion of a package-specific header, if cfg.mk specified one.
> +# config_h_header must be suitable for grep -E.
> +config_h_header ?= <config\.h>
> +sc_require_config_h:
> +	@require='^# *include $(config_h_header)'			\
> +	in_vc_files='\.c$$'						\
> +	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.
> +sc_require_config_h_first:
> +	@if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then	\
> +	  fail=0;							\
> +	  for i in $$($(VC_LIST_EXCEPT) | grep '\.c$$'); do		\
> +	    grep '^# *include\>' $$i | sed 1q				\
> +		| grep -E '^# *include $(config_h_header)' > /dev/null	\
> +	      || { echo $$i; fail=1; };					\
> +	  done;								\
> +	  test $$fail = 1 &&						\
> +	    { echo '$(ME): the above files include some other header'	\
> +		'before <config.h>' 1>&2; exit 1; } || :;		\
> +	else :;								\
> +	fi
> +
> +sc_prohibit_HAVE_MBRTOWC:
> +	@prohibit='\bHAVE_MBRTOWC\b'					\
> +	halt="do not use $$prohibit; it is always defined"		\
> +	  $(_sc_search_regexp)
> +
> +# To use this "command" macro, you must first define two shell variables:
> +# h: the header name, with no enclosing <> or ""
> +# re: a regular expression that matches IFF something provided by $h is used.
> +define _sc_header_without_use
> +  dummy=; : so we do not need a semicolon before each use;		\
> +  h_esc=`echo '[<"]'"$$h"'[">]'|sed 's/\./\\\\./g'`;			\
> +  if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then		\
> +    files=$$(grep -l '^# *include '"$$h_esc"				\
> +	     $$($(VC_LIST_EXCEPT) | grep '\.c$$')) &&			\
> +    grep -LE "$$re" $$files | grep . &&					\
> +      { echo "$(ME): the above files include $$h but don't use it"	\
> +	1>&2; exit 1; } || :;						\
> +  else :;								\
> +  fi
> +endef
> +
> +# Prohibit the inclusion of assert.h without an actual use of assert.
> +sc_prohibit_assert_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 *\(' $(_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)? *\(' $(_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(_[^ ]+)? *\(' $(_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)? *\(' $(_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 *\(' \
> +	  $(_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 *\(' \
> +	  $(_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) *\(' \
> +	  $(_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)? *\('\
> +	  $(_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 $1' lib/xalloc.h
> +# Divide into two sets on case, and filter each through this:
> +# | sort | perl -MRegexp::Assemble -le \
> +#  'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
> +# Note this was produced by the above:
> +# _xa1 = \
> +#x(((2n?)?re|c(har)?|n(re|m)|z)alloc|alloc_(oversized|die)|m(alloc|emdup)|strdup)
> +# But we can do better, in at least two ways:
> +# 1) take advantage of two "dup"-suffixed strings:
> +# x(((2n?)?re|c(har)?|n(re|m)|[mz])alloc|alloc_(oversized|die)|(mem|str)dup)
> +# 2) notice that "c(har)?|[mz]" is equivalent to the shorter and more readable
> +# "char|[cmz]"
> +# x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
> +_xa1 = x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
> +_xa2 = X([CZ]|N?M)ALLOC
> +sc_prohibit_xalloc_without_use:
> +	@h='xalloc.h' \
> +	re='\<($(_xa1)|$(_xa2)) *\('\
> +	  $(_sc_header_without_use)
> +
> +# Extract function names:
> +# 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)) *\(
> +_hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
> +sc_prohibit_hash_without_use:
> +	@h='hash.h' \
> +	re='$(_hash_fn)|$(_hash_struct)'\
> +	  $(_sc_header_without_use)
> +
> +sc_prohibit_cloexec_without_use:
> +	@h='cloexec.h' re='\<(set_cloexec_flag|dup_cloexec) *\(' \
> +	  $(_sc_header_without_use)
> +
> +sc_prohibit_posixver_without_use:
> +	@h='posixver.h' re='\<posix2_version *\(' $(_sc_header_without_use)
> +
> +sc_prohibit_same_without_use:
> +	@h='same.h' re='\<same_name *\(' $(_sc_header_without_use)
> +
> +sc_prohibit_hash_pjw_without_use:
> +	@h='hash-pjw.h' \
> +	re='\<hash_pjw *\(' \
> +	  $(_sc_header_without_use)
> +
> +sc_prohibit_safe_read_without_use:
> +	@h='safe-read.h' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
> +	  $(_sc_header_without_use)
> +
> +sc_prohibit_argmatch_without_use:
> +	@h='argmatch.h' \
> +	re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<(invalid_arg|argmatch(_exit_fn|_(in)?valid)?) *\()' \
> +	  $(_sc_header_without_use)
> +
> +sc_prohibit_canonicalize_without_use:
> +	@h='canonicalize.h' \
> +	re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode)' \
> +	  $(_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 *\()' \
> +	  $(_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)\>' \
> +	  $(_sc_header_without_use)
> +
> +# Prohibit the inclusion of c-ctype.h without an actual use.
> +ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
> +|isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
> +sc_prohibit_c_ctype_without_use:
> +	@h='c-ctype.h' re='\<c_($(ctype_re)) *\(' \
> +	  $(_sc_header_without_use)
> +
> +_empty =
> +_sp = $(_empty) $(_empty)
> +# The following list was generated by running:
> +# man signal.h|col -b|perl -ne '/bsd_signal.*;/.../sigwaitinfo.*;/ and print' \
> +#   | perl -lne '/^\s+(?:int|void).*?(\w+).*/ and print $1' | fmt
> +_sig_functions = \
> +  bsd_signal kill killpg pthread_kill pthread_sigmask raise sigaction \
> +  sigaddset sigaltstack sigdelset sigemptyset sigfillset sighold sigignore \
> +  siginterrupt sigismember signal sigpause sigpending sigprocmask sigqueue \
> +  sigrelse sigset sigsuspend sigtimedwait sigwait sigwaitinfo
> +_sig_function_re = $(subst $(_sp),|,$(strip $(_sig_functions)))
> +# The following were extracted from "man signal.h" manually.
> +_sig_types_and_consts =							\
> +  MINSIGSTKSZ SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK		\
> +  SA_RESETHAND SA_RESTART SA_SIGINFO SIGEV_NONE SIGEV_SIGNAL		\
> +  SIGEV_THREAD SIGSTKSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SS_DISABLE	\
> +  SS_ONSTACK mcontext_t pid_t sig_atomic_t sigevent siginfo_t sigset_t	\
> +  sigstack sigval stack_t ucontext_t
> +# generated via this:
> +# perl -lne '/^#ifdef (SIG\w+)/ and print $1' lib/sig2str.c|sort -u|fmt -70
> +_sig_names =								\
> +  SIGABRT SIGALRM SIGALRM1 SIGBUS SIGCANCEL SIGCHLD SIGCLD SIGCONT	\
> +  SIGDANGER SIGDIL SIGEMT SIGFPE SIGFREEZE SIGGRANT SIGHUP SIGILL	\
> +  SIGINFO SIGINT SIGIO SIGIOT SIGKAP SIGKILL SIGKILLTHR SIGLOST SIGLWP	\
> +  SIGMIGRATE SIGMSG SIGPHONE SIGPIPE SIGPOLL SIGPRE SIGPROF SIGPWR	\
> +  SIGQUIT SIGRETRACT SIGSAK SIGSEGV SIGSOUND SIGSTKFLT SIGSTOP SIGSYS	\
> +  SIGTERM SIGTHAW SIGTRAP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGUSR1	\
> +  SIGUSR2 SIGVIRT SIGVTALRM SIGWAITING SIGWINCH SIGWIND SIGWINDOW	\
> +  SIGXCPU SIGXFSZ
> +_sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
> +
> +# Prohibit the inclusion of signal.h without an actual use.
> +sc_prohibit_signal_without_use:
> +	@h='signal.h'							\
> +	re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'		\
> +	  $(_sc_header_without_use)
> +
> +# Don't include stdio--.h unless you use one of its functions.
> +sc_prohibit_stdio--_without_use:
> +	@h='stdio--.h' re='\<((f(re)?|p)open|tmpfile) *\('		\
> +	  $(_sc_header_without_use)
> +
> +# Don't include stdio-safer.h unless you use one of its functions.
> +sc_prohibit_stdio-safer_without_use:
> +	@h='stdio-safer.h' re='\<((f(re)?|p)open|tmpfile)_safer *\('	\
> +	  $(_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 ([A-Z]\w+)\(/ and print $1' lib/intprops.h|fmt
> +_intprops_names =							\
> +  TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT		\
> +  TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM		\
> +  INT_BITS_STRLEN_BOUND INT_STRLEN_BOUND INT_BUFSIZE_BOUND		\
> +  INT_ADD_RANGE_OVERFLOW INT_SUBTRACT_RANGE_OVERFLOW			\
> +  INT_NEGATE_RANGE_OVERFLOW INT_MULTIPLY_RANGE_OVERFLOW			\
> +  INT_DIVIDE_RANGE_OVERFLOW INT_REMAINDER_RANGE_OVERFLOW		\
> +  INT_LEFT_SHIFT_RANGE_OVERFLOW INT_ADD_OVERFLOW INT_SUBTRACT_OVERFLOW	\
> +  INT_NEGATE_OVERFLOW INT_MULTIPLY_OVERFLOW INT_DIVIDE_OVERFLOW		\
> +  INT_REMAINDER_OVERFLOW INT_LEFT_SHIFT_OVERFLOW
> +_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)) *\('				\
> +	  $(_sc_header_without_use)
> +
> +_stddef_syms_re = NULL|offsetof|ptrdiff_t|size_t|wchar_t
> +# Prohibit the inclusion of stddef.h without an actual use.
> +sc_prohibit_stddef_without_use:
> +	@h='stddef.h'							\
> +	re='\<($(_stddef_syms_re))\>'					\
> +	  $(_sc_header_without_use)
> +
> +_de1 = dirfd|(close|(fd)?open|read|rewind|seek|tell)dir(64)?(_r)?
> +_de2 = (versionsort|struct dirent|getdirentries|alphasort|scandir(at)?)(64)?
> +_de3 = MAXNAMLEN|DIR|ino_t|d_ino|d_fileno|d_namlen
> +_dirent_syms_re = $(_de1)|$(_de2)|$(_de3)
> +# Prohibit the inclusion of dirent.h without an actual use.
> +sc_prohibit_dirent_without_use:
> +	@h='dirent.h'							\
> +	re='\<($(_dirent_syms_re))\>'					\
> +	  $(_sc_header_without_use)
> +
> +# Prohibit the inclusion of verify.h without an actual use.
> +sc_prohibit_verify_without_use:
> +	@h='verify.h'							\
> +	re='\<(verify(true|expr)?|static_assert) *\('			\
> +	  $(_sc_header_without_use)
> +
> +# Don't include xfreopen.h unless you use one of its functions.
> +sc_prohibit_xfreopen_without_use:
> +	@h='xfreopen.h' re='\<xfreopen *\(' $(_sc_header_without_use)
> +
> +sc_obsolete_symbols:
> +	@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:
> +	@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:
> +	@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)
> +
> +# Ensure that each .c file containing a "main" function also
> +# calls bindtextdomain.
> +sc_bindtextdomain:
> +	@require='bindtextdomain *\('					\
> +	in_vc_files='\.c$$'						\
> +	containing='\<main *('						\
> +	halt='the above files do not call bindtextdomain'		\
> +	  $(_sc_search_regexp)
> +
> +# Require that the final line of each test-lib.sh-using test be this one:
> +# Exit $fail
> +# Note: this test requires GNU grep's --label= option.
> +Exit_witness_file ?= tests/test-lib.sh
> +Exit_base := $(notdir $(Exit_witness_file))
> +sc_require_test_exit_idiom:
> +	@if test -f $(srcdir)/$(Exit_witness_file); then		\
> +	  die=0;							\
> +	  for i in $$(grep -l -F 'srcdir/$(Exit_base)'			\
> +		$$($(VC_LIST) tests)); do				\
> +	    tail -n1 $$i | grep '^Exit .' > /dev/null			\
> +	      && : || { die=1; echo $$i; }				\
> +	  done;								\
> +	  test $$die = 1 &&						\
> +	    { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
> +	      echo 1>&2 'Exit something';				\
> +	      exit 1; } || :;						\
> +	fi
> +
> +sc_trailing_blank:
> +	@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:
> +	@prohibit='^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'		\
> +	halt='help2man requires at least two spaces between an option and its description'\
> +	  $(_sc_search_regexp)
> +
> +# A regexp matching function names like "error" that may be used
> +# to emit translatable messages.
> +_gl_translatable_diag_func_re ?= error
> +
> +# Look for diagnostics that aren't marked for translation.
> +# This won't find any for which error's format string is on a separate line.
> +sc_unmarked_diagnostics:
> +	@grep -nE							\
> +	    '\<$(_gl_translatable_diag_func_re) *\([^"]*"[^"]*[a-z]{3}' \
> +		$$($(VC_LIST_EXCEPT))					\
> +	  | grep -Ev '(_|ngettext ?)\(' &&				\
> +	  { echo '$(ME): found unmarked diagnostic(s)' 1>&2;		\
> +	    exit 1; } || :
> +
> +# Avoid useless parentheses like those in this example:
> +# #if defined (SYMBOL) || defined (SYM2)
> +sc_useless_cpp_parens:
> +	@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='\<'"$$re"'\>'						\
> +	halt=$$(printf '%s\n'						\
> +	'do not test the above HAVE_<header>_H symbol(s);'		\
> +	'  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.
> +# The exempted names below are defined only conditionally in gnulib,
> +# and hence sometimes must/may be defined in application code.
> +gl_extract_significant_defines_ = \
> +  /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/\
> +    && $$2 !~ /(?:rpl_|_used_without_)/\
> +    && $$1 !~ /^(?:NSIG|ENODATA)$$/\
> +    && $$1 !~ /^(?:SA_RESETHAND|SA_RESTART)$$/\
> +    and print $$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			\
> +	    test -f $$f							\
> +	      && perl -lne '$(gl_extract_significant_defines_)' $$f;	\
> +	  done;								\
> +	) | sort -u							\
> +	  | 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:
> +	@prohibit='either ''version [^3]'				\
> +	halt='GPL vN, N!=3'						\
> +	  $(_sc_search_regexp)
> +
> +# Require the latest GFDL.  Two regexp, since some .texi files end up
> +# line wrapping between 'Free Documentation License,' and 'Version'.
> +_GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
> +sc_GFDL_version:
> +	@prohibit='$(_GFDL_regexp)'					\
> +	halt='GFDL vN, N!=3'						\
> +	  $(_sc_search_regexp)
> +
> +# Don't use Texinfo's @acronym{}.
> +# http://lists.gnu.org/archive/html/bug-gnulib/2010-03/msg00321.html
> +texinfo_suffix_re_ ?= \.(txi|texi(nfo)?)$$
> +sc_texinfo_acronym:
> +	@prohibit='@acronym\{'						\
> +	in_vc_files='$(texinfo_suffix_re_)'				\
> +	halt='found use of Texinfo @acronym{}'				\
> +	  $(_sc_search_regexp)
> +
> +cvs_keywords = \
> +  Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State
> +
> +sc_prohibit_cvs_keyword:
> +	@prohibit='\$$($(cvs_keywords))\$$'				\
> +	halt='do not use CVS keyword expansion'				\
> +	  $(_sc_search_regexp)
> +
> +# This Perl code is slightly obfuscated.  Not only is each "$" doubled
> +# because it's in a Makefile, but the $$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 $1' ...
> +# but that would be far less efficient, reading the entire contents
> +# of each file, rather than just the last two bytes of each.
> +# In addition, while the code below detects both blank lines and a missing
> +# newline at EOF, the above detects only the former.
> +#
> +# This is a perl script that is expected to be the single-quoted argument
> +# to a command-line "-le".  The remaining arguments are file names.
> +# Print the name of each file that ends in exactly one newline byte.
> +# I.e., warn if there are blank lines (2 or more newlines), or if the
> +# last byte is not a newline.  However, currently we don't complain
> +# about any file that contains exactly one byte.
> +# Exit nonzero if at least one such file is found, otherwise, exit 0.
> +# Warn about, but otherwise ignore open failure.  Ignore seek/read failure.
> +#
> +# Use this if you want to remove trailing empty lines from selected files:
> +#   perl -pi -0777 -e 's/\n\n+$/\n/' files...
> +#
> +require_exactly_one_NL_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 && ($$last_two_bytes eq "\n\n"				\
> +              || substr ($$last_two_bytes,1) ne "\n")			\
> +          and (print $$f), $$fail=1;					\
> +    }									\
> +  END { exit defined $$fail }
> +sc_prohibit_empty_lines_at_EOF:
> +	@perl -le '$(require_exactly_one_NL_at_EOF_)' $$($(VC_LIST_EXCEPT)) \
> +	  || { echo '$(ME): empty line(s) or no newline at EOF'		\
> +		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:
> +	@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:
> +	@prohibit='^ *# *define  *S_IS'					\
> +	halt='do not define S_IS* macros; include <sys/stat.h>'		\
> +	  $(_sc_search_regexp)
> +
> +# Perl block to convert a match to FILE_NAME:LINENO:TEST,
> +# that is shared by two definitions below.
> +perl_filename_lineno_text_ =						\
> +    -e '  {'								\
> +    -e '    $$n = ($$` =~ tr/\n/\n/ + 1);'				\
> +    -e '    ($$v = $$&) =~ s/\n/\\n/g;'					\
> +    -e '    print "$$ARGV:$$n:$$v\n";'					\
> +    -e '  }'
> +
> +prohibit_doubled_word_RE_ ?= \
> +  /\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b/gims
> +prohibit_doubled_word_ =						\
> +    -e 'while ($(prohibit_doubled_word_RE_))'				\
> +    $(perl_filename_lineno_text_)
> +
> +# Define this to a regular expression that matches
> +# any filename:dd:match lines you want to ignore.
> +# The default is to ignore no matches.
> +ignore_doubled_word_match_RE_ ?= ^$$
> +
> +sc_prohibit_doubled_word:
> +	@perl -n -0777 $(prohibit_doubled_word_) $$($(VC_LIST_EXCEPT))	\
> +	  | grep -vE '$(ignore_doubled_word_match_RE_)'			\
> +	  | grep . && { echo '$(ME): doubled words' 1>&2; exit 1; } || :
> +
> +# A regular expression matching undesirable combinations of words like
> +# "can not"; this matches them even when the two words appear on different
> +# lines, but not when there is an intervening delimiter like "#" or "*".
> +prohibit_undesirable_word_seq_RE_ ?=					\
> +  /\bcan\s+not\b/gims
> +prohibit_undesirable_word_seq_ =					\
> +    -e 'while ($(prohibit_undesirable_word_seq_RE_))'			\
> +    $(perl_filename_lineno_text_)
> +# Define this to a regular expression that matches
> +# any filename:dd:match lines you want to ignore.
> +# The default is to ignore no matches.
> +ignore_undesirable_word_sequence_RE_ ?= ^$$
> +
> +sc_prohibit_undesirable_word_seq:
> +	@perl -n -0777 $(prohibit_undesirable_word_seq_)		\
> +	     $$($(VC_LIST_EXCEPT))					\
> +	  | grep -vE '$(ignore_undesirable_word_sequence_RE_)' | grep .	\
> +	  && { echo '$(ME): undesirable word sequence' >&2; exit 1; } || :
> +
> +_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)
> +
> +# Avoid a test bashism.
> +sc_prohibit_test_double_equal:
> +	@prohibit='(\<test| \[+) .+ == '				\
> +	containing='#! */bin/[a-z]*sh'					\
> +	halt='use "test x = x", not "test x =''= x"'			\
> +	  $(_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.
> +# The perl -0777 invocation below extracts the possibly-multi-line
> +# definition of LDADD from the appropriate Makefile.am and exits 0
> +# when it contains "ICONV".
> +sc_proper_name_utf8_requires_ICONV:
> +	@progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
> +	if test "x$$progs" != x; then					\
> +	  fail=0;							\
> +	  for p in $$progs; do						\
> +	    dir=$$(dirname "$$p");					\
> +	    perl -0777							\
> +	      -ne 'exit !(/^LDADD =(.+?[^\\]\n)/ms && $$1 =~ /ICONV/)'	\
> +	      $$dir/Makefile.am && continue;				\
> +	    base=$$(basename "$$p" .c);					\
> +	    grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null	\
> +	      || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
> +	  done;								\
> +	  test $$fail = 1 &&						\
> +	    { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
> +	      exit 1; } || :;						\
> +	fi
> +
> +# Warn about "c0nst struct Foo const foo[]",
> +# but not about "char const *const foo" or "#define const const".
> +sc_redundant_const:
> +	@prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'		\
> +	halt='redundant "const" in declarations'			\
> +	  $(_sc_search_regexp)
> +
> +sc_const_long_option:
> +	@grep '^ *static.*struct option ' $$($(VC_LIST_EXCEPT))		\
> +	  | grep -Ev 'const struct option|struct option const' && {	\
> +	      echo 1>&2 '$(ME): add "const" to the above declarations'; \
> +	      exit 1; } || :
> +
> +NEWS_hash =								\
> +  $$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p'		\
> +       $(srcdir)/NEWS							\
> +     | perl -0777 -pe							\
> +	's/^Copyright.+?Free\sSoftware\sFoundation,\sInc\.\n//ms'	\
> +     | md5sum -								\
> +     | sed 's/ .*//')
> +
> +# Ensure that we don't accidentally insert an entry into an old NEWS block.
> +sc_immutable_NEWS:
> +	@if test -f $(srcdir)/NEWS; then				\
> +	  test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : ||		\
> +	    { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; };	\
> +	fi
> +
> +# Update the hash stored above.  Do this after each release and
> +# for any corrections to old entries.
> +update-NEWS-hash: NEWS
> +	perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
> +	  $(srcdir)/cfg.mk
> +
> +# Ensure that we use only the standard $(VAR) notation,
> +# not @...@ in Makefile.am, now that we can rely on automake
> +# to emit a definition for each substituted variable.
> +# However, there is still one case in which @VAR@ use is not just
> +# legitimate, but actually required: when augmenting an automake-defined
> +# variable with a prefix.  For example, gettext uses this:
> +# MAKEINFO = env LANG= LC_MESSAGES= LC_ALL= LANGUAGE= @MAKEINFO@
> +# otherwise, makeinfo would put German or French (current locale)
> +# navigation hints in the otherwise-English documentation.
> +#
> +# Allow the package to add exceptions via a hook in cfg.mk;
> +# for example, @PRAGMA_SYSTEM_HEADER@ can be permitted by
> +# setting this to ' && !/PRAGMA_SYSTEM_HEADER/'.
> +_makefile_at_at_check_exceptions ?=
> +sc_makefile_at_at_check:
> +	@perl -ne '/\ [A-Z_0-9]+\@/'					\
> +          -e ' && !/([A-Z_0-9]+)\s+= *\ \1\@$$/'			\
> +          -e ''$(_makefile_at_at_check_exceptions)			\
> +	  -e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}'	\
> +	    $$($(VC_LIST_EXCEPT) | grep -E '(^|/)(Makefile\.am|[^/]+\.mk)$$') \
> +	  && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
> +
> +news-check: NEWS
> +	if sed -n $(news-check-lines-spec)p $(srcdir)/NEWS		\
> +	    | grep -E $(news-check-regexp) >/dev/null; then		\
> +	  :;								\
> +	else								\
> +	  echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2;	\
> +	  exit 1;							\
> +	fi
> +
> +sc_makefile_TAB_only_indentation:
> +	@prohibit='^	[ ]{8}'						\
> +	in_vc_files='akefile|\.mk$$'					\
> +	halt='found TAB-8-space indentation'				\
> +	  $(_sc_search_regexp)
> +
> +sc_m4_quote_check:
> +	@prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]'		\
> +	in_vc_files='(^configure\.ac|\.m4)$$'				\
> +	halt='quote the first arg to AC_DEF*'				\
> +	  $(_sc_search_regexp)
> +
> +fix_po_file_diag = \
> +'you have changed the set of files with translatable diagnostics;\n\
> +apply the above patch\n'
> +
> +# Verify that all source files using _() are listed in po/POTFILES.in.
> +po_file ?= $(srcdir)/po/POTFILES.in
> +generated_files ?= $(srcdir)/lib/*.[ch]
> +sc_po_check:
> +	@if test -f $(po_file); then					\
> +	  grep -E -v '^(#|$$)' $(po_file)				\
> +	    | grep -v '^src/false\.c$$' | sort > $ -1;			\
> +	  files=;							\
> +	  for file in $$($(VC_LIST_EXCEPT)) $(generated_files); do	\
> +	    test -r $$file || continue;					\
> +	    case $$file in						\
> +	      *.m4|*.mk) continue ;;					\
> +	      *.?|*.??) ;;						\
> +	      *) continue;;						\
> +	    esac;							\
> +	    case $$file in						\
> +	    *.[ch])							\
> +	      base=`expr " $$file" : ' \(.*\)\..'`;			\
> +	      { test -f $$base.l || test -f $$base.y; } && continue;;	\
> +	    esac;							\
> +	    files="$$files $$file";					\
> +	  done;								\
> +	  grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files		\
> +	    | sed 's|^$(_dot_escaped_srcdir)/||' | sort -u > $ -2;	\
> +	  diff -u -L $(po_file) -L $(po_file) $ -1 $ -2			\
> +	    || { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; };	\
> +	  rm -f $ -1 $ -2;						\
> +	fi
> +
> +# Sometimes it is useful to change the PATH environment variable
> +# in Makefiles.  When doing so, it's better not to use the Unix-centric
> +# path separator of `:', but rather the automake-provided `$(PATH_SEPARATOR)'.
> +msg = '$(ME): Do not use `:'\'' above; use $$(PATH_SEPARATOR) instead'
> +sc_makefile_path_separator_check:
> +	@prohibit='PATH[=].*:'						\
> +	in_vc_files='akefile|\.mk$$'					\
> +	halt=$(msg)							\
> +	  $(_sc_search_regexp)
> +
> +# Check that `make alpha' will not fail at the end of the process,
> +# i.e., when pkg-M.N.tar.xz already exists (either in "." or in ../release)
> +# and is read-only.
> +writable-files:
> +	if test -d $(release_archive_dir); then				\
> +	  for file in $(DIST_ARCHIVES); do				\
> +	    for p in ./ $(release_archive_dir)/; do			\
> +	      test -e $$p$$file || continue;				\
> +	      test -w $$p$$file						\
> +		|| { echo ERROR: $$p$$file is not writable; fail=1; };	\
> +	    done;							\
> +	  done;								\
> +	  test "$$fail" && exit 1 || : ;				\
> +	else :;								\
> +	fi
> +
> +v_etc_file = $(gnulib_dir)/lib/version-etc.c
> +sample-test = tests/sample-test
> +texi = doc/$(PACKAGE).texi
> +# Make sure that the copyright date in $(v_etc_file) is up to date.
> +# Do the same for the $(sample-test) and the main doc/.texi file.
> +sc_copyright_check:
> +	@require='enum { COPYRIGHT_YEAR = '$$(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 ?= $(srcdir)/tests/help-version
> +_hv_regex_weak ?= ^ *\. .*/init\.sh"
> +# Fix syntax-highlighters "
> +_hv_regex_strong ?= ^ *\. "\$${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.
> +# That would be flagged by using -Wundef, however gnulib currently
> +# 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:
> +	@prohibit='^#define.*(yes|no|true|false)$$'			\
> +	in_files='$(CONFIG_INCLUDE)'					\
> +	halt='Use 0 or 1 for macro values'				\
> +	  $(_sc_search_regexp)
> +
> +# Even if you use pathmax.h to guarantee that PATH_MAX is defined, it might
> +# not be constant, or might overflow a stack.  In general, use PATH_MAX as
> +# a limit, not an array or alloca size.
> +sc_prohibit_path_max_allocation:
> +	@prohibit='(\balloca *\([^)]*|\[[^]]*)PATH_MAX'			\
> +	halt='Avoid stack allocations of size PATH_MAX'			\
> +	  $(_sc_search_regexp)
> +
> +sc_vulnerable_makefile_CVE-2009-4029:
> +	@prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
> +	in_files=$$(find $(srcdir) -name Makefile.in)			\
> +	halt=$$(printf '%s\n'						\
> +	  'the above files are vulnerable; beware of running'		\
> +	  '  "make dist*" rules, and upgrade to fixed automake'		\
> +	  '  see http://bugzilla.redhat.com/542609 for details')	\
> +	  $(_sc_search_regexp)
> +
> +vc-diff-check:
> +	(unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
> +	if test -s vc-diffs; then				\
> +	  cat vc-diffs;						\
> +	  echo "Some files are locally modified:" 1>&2;		\
> +	  exit 1;						\
> +	else							\
> +	  rm vc-diffs;						\
> +	fi
> +
> +rel-files = $(DIST_ARCHIVES)
> +
> +gnulib_dir ?= $(srcdir)/gnulib
> +gnulib-version = $$(cd $(gnulib_dir) && git describe)
> +bootstrap-tools ?= autoconf,automake,gnulib
> +
> +# If it's not already specified, derive the GPG key ID from
> +# the signed tag we've just applied to mark this release.
> +gpg_key_ID ?= \
> +  $$(git cat-file tag v$(VERSION) > .ann-sig \
> +     && 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
> +
> +# Make info-gnu the default only for a stable release.
> +ifeq ($(RELEASE_TYPE),stable)
> +  announcement_Cc_ ?= $(translation_project_), $(PACKAGE_BUGREPORT)
> +  announcement_mail_headers_ ?=						\
> +    To: info-gnu gnu org						\
> +    Cc: $(announcement_Cc_)						\
> +    Mail-Followup-To: $(PACKAGE_BUGREPORT)
> +else
> +  announcement_Cc_ ?= $(translation_project_)
> +  announcement_mail_headers_ ?=						\
> +    To: $(PACKAGE_BUGREPORT)						\
> +    Cc: $(announcement_Cc_)
> +endif
> +
> +announcement: NEWS ChangeLog $(rel-files)
> +	@$(srcdir)/$(_build-aux)/announce-gen				\
> +	    --mail-headers='$(announcement_mail_headers_)'		\
> +	    --release-type=$(RELEASE_TYPE)				\
> +	    --package=$(PACKAGE)					\
> +	    --prev=$(PREV_VERSION)					\
> +	    --curr=$(VERSION)						\
> +	    --gpg-key-id=$(gpg_key_ID)					\
> +	    --news=$(srcdir)/NEWS					\
> +	    --bootstrap-tools=$(bootstrap-tools)			\
> +	    --gnulib-version=$(gnulib-version)				\
> +	    --no-print-checksums					\
> +	    $(addprefix --url-dir=, $(url_dir_list))
> +
> +## ---------------- ##
> +## Updating files.  ##
> +## ---------------- ##
> +
> +ftp-gnu = ftp://ftp.gnu.org/gnu
> +www-gnu = http://www.gnu.org
> +
> +upload_dest_dir_ ?= $(PACKAGE)
> +emit_upload_commands:
> +	@echo =====================================
> +	@echo =====================================
> +	@echo "$(srcdir)/$(_build-aux)/gnupload $(GNUPLOADFLAGS) \\"
> +	@echo "    --to $(gnu_rel_host):$(upload_dest_dir_) \\"
> +	@echo "  $(rel-files)"
> +	@echo '# send the ~/announce-$(my_distdir) e-mail'
> +	@echo =====================================
> +	@echo =====================================
> +
> +define emit-commit-log
> +  printf '%s\n' 'maint: post-release administrivia' ''			\
> +    '* NEWS: Add header line for next release.'				\
> +    '* .prev-version: Record previous version.'				\
> +    '* cfg.mk (old_NEWS_hash): Auto-update.'
> +endef
> +
> +.PHONY: no-submodule-changes
> +no-submodule-changes:
> +	if test -d $(srcdir)/.git; then					\
> +	  diff=$$(cd $(srcdir) && git submodule -q foreach		\
> +		  git diff-index --name-only HEAD)			\
> +	    || exit 1;							\
> +	  case $$diff in '') ;;						\
> +	    *) echo '$(ME): submodule files are locally modified:';	\
> +		echo "$$diff"; exit 1;; esac;				\
> +	else								\
> +	  : ;								\
> +	fi
> +
> +submodule-checks ?= no-submodule-changes public-submodule-commit
> +
> +# Ensure that each sub-module commit we're using is public.
> +# Without this, it is too easy to tag and release code that
> +# cannot be built from a fresh clone.
> +.PHONY: public-submodule-commit
> +public-submodule-commit:
> +	$(AM_V_GEN)if test -d $(srcdir)/.git; then			\
> +	  cd $(srcdir) &&						\
> +	  git submodule --quiet foreach test '$$(git rev-parse $$sha1)'	\
> +	      = '$$(git merge-base origin $$sha1)'			\
> +	    || { echo '$(ME): found non-public submodule commit' >&2;	\
> +		 exit 1; };						\
> +	else								\
> +	  : ;								\
> +	fi
> +# This rule has a high enough utility/cost ratio that it should be a
> +# dependent of "check" by default.  However, some of us do occasionally
> +# commit a temporary change that deliberately points to a non-public
> +# submodule commit, and want to be able to use rules like "make check".
> +# In that case, run e.g., "make check gl_public_submodule_commit="
> +# to disable this test.
> +gl_public_submodule_commit ?= public-submodule-commit
> +check: $(gl_public_submodule_commit)
> +
> +.PHONY: alpha beta stable
> +ALL_RECURSIVE_TARGETS += alpha beta stable
> +alpha beta stable: $(local-check) writable-files $(submodule-checks)
> +	test $@ = stable						\
> +	  && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$'		\
> +	       || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
> +	  || :
> +	$(MAKE) vc-diff-check
> +	$(MAKE) news-check
> +	$(MAKE) distcheck
> +	$(MAKE) dist XZ_OPT=-9ev
> +	$(MAKE) $(release-prep-hook) RELEASE_TYPE=$@
> +	$(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
> +
> +# Override this in cfg.mk if you follow different procedures.
> +release-prep-hook ?= release-prep
> +
> +gl_noteworthy_news_ = * Noteworthy changes in release ?.? (????-??-??) [?]
> +.PHONY: release-prep
> +release-prep:
> +	case $$RELEASE_TYPE in alpha|beta|stable) ;; \
> +	  *) echo "invalid RELEASE_TYPE: $$RELEASE_TYPE" 1>&2; exit 1;; esac
> +	$(MAKE) --no-print-directory -s announcement > ~/announce-$(my_distdir)
> +	if test -d $(release_archive_dir); then			\
> +	  ln $(rel-files) $(release_archive_dir);		\
> +	  chmod a-w $(rel-files);				\
> +	fi
> +	echo $(VERSION) > $(prev_version_file)
> +	$(MAKE) update-NEWS-hash
> +	perl -pi -e '$$. == 3 and print "$(gl_noteworthy_news_)\n\n\n"' NEWS
> +	$(emit-commit-log) > .ci-msg
> +	$(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 $(gendocs_options_) \
> +	     -o '$(abs_builddir)/doc/manual' \
> +	     --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
> +	    "$(PACKAGE_NAME) - $(manual_title)"
> +	@echo " *** Upload the doc/manual directory to web-cvs."
> +
> +# Code Coverage
> +
> +init-coverage:
> +	$(MAKE) $(AM_MAKEFLAGS) clean
> +	lcov --directory . --zerocounters
> +
> +COVERAGE_CCOPTS ?= "-g --coverage"
> +COVERAGE_OUT ?= doc/coverage
> +
> +build-coverage:
> +	$(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS)
> +	$(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS) check
> +	mkdir -p $(COVERAGE_OUT)
> +	lcov --directory . --output-file $(COVERAGE_OUT)/$(PACKAGE).info \
> +		--capture
> +
> +gen-coverage:
> +	genhtml --output-directory $(COVERAGE_OUT) \
> +		$(COVERAGE_OUT)/$(PACKAGE).info \
> +		--highlight --frames --legend \
> +		--title "$(PACKAGE_NAME)"
> +
> +coverage: init-coverage build-coverage gen-coverage
> +
> +# Update gettext files.
> +PACKAGE ?= $(shell basename $(PWD))
> +PO_DOMAIN ?= $(PACKAGE)
> +POURL = http://translationproject.org/latest/$(PO_DOMAIN)/
> +PODIR ?= po
> +refresh-po:
> +	rm -f $(PODIR)/*.po && \
> +	echo "$(ME): getting translations into po (please ignore the robots.txt ERROR 404)..." && \
> +	wget --no-verbose --directory-prefix $(PODIR) --no-directories --recursive --level 1 --accept .po --accept .po.1 $(POURL) && \
> +	echo 'en boldquot' > $(PODIR)/LINGUAS && \
> +	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.
> +update-copyright-env ?=
> +
> +# Run this rule once per year (usually early in January)
> +# to update all FSF copyright year lists in your project.
> +# If you have an additional project-specific rule,
> +# add it in cfg.mk along with a line 'update-copyright: prereq'.
> +# By default, exclude all variants of COPYING; you can also
> +# add exemptions (such as ChangeLog..* for rotated change logs)
> +# in the file .x-update-copyright.
> +.PHONY: update-copyright
> +update-copyright:
> +	grep -l -w Copyright                                             \
> +	  $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
> +	  | $(update-copyright-env) xargs $(srcdir)/$(_build-aux)/$@
> +
> +# This tight_scope test is skipped with a warning if $(_gl_TS_headers) is not
> +# overridden and $(_gl_TS_dir)/Makefile.am does not mention noinst_HEADERS.
> +
> +# NOTE: to override any _gl_TS_* default value, you must
> +# define the variable(s) using "export" in cfg.mk.
> +_gl_TS_dir ?= src
> +
> +ALL_RECURSIVE_TARGETS += sc_tight_scope
> +sc_tight_scope: tight-scope.mk
> +	@fail=0;							\
> +	if ! grep '^ *export _gl_TS_headers *=' $(srcdir)/cfg.mk	\
> +		> /dev/null						\
> +	   && ! grep -w noinst_HEADERS $(srcdir)/$(_gl_TS_dir)/Makefile.am \
> +		> /dev/null 2>&1; then					\
> +	    echo '$(ME): skipping $@';					\
> +	else								\
> +	    $(MAKE) -s -C $(_gl_TS_dir)					\
> +		-f Makefile						\
> +		-f $(abs_top_srcdir)/cfg.mk				\
> +		-f $(abs_top_builddir)/$<				\
> +	      _gl_tight_scope						\
> +		|| fail=1;						\
> +	fi;								\
> +	rm -f $<;							\
> +	exit $$fail
> +
> +tight-scope.mk: $(ME)
> +	@rm -f $@ $ -t
> +	@perl -ne '/^# TS-start/.../^# TS-end/ and print' $(ME) > $ -t
> +	@chmod a=r $ -t && mv $ -t $@
> +
> +ifeq (a,b)
> +# TS-start
> +
> +# Most functions should have static scope.
> +# Any that don't must be marked with `extern', but `main'
> +# and `usage' are exceptions: they're always extern, but
> +# do not need to be marked.  Symbols matching `__.*' are
> +# reserved by the compiler, so are automatically excluded below.
> +_gl_TS_unmarked_extern_functions ?= main usage
> +_gl_TS_function_match ?= /^(?:$(_gl_TS_extern)) +.*?(\S+) *\(/
> +
> +# If your project uses a macro like "XTERN", then put
> +# the following in cfg.mk to override this default:
> +# export _gl_TS_extern = extern|XTERN
> +_gl_TS_extern ?= extern
> +
> +# The second nm|grep checks for file-scope variables with `extern' scope.
> +# Without gnulib's progname module, you might put program_name here.
> +# Symbols matching `__.*' are reserved by the compiler,
> +# so are automatically excluded below.
> +_gl_TS_unmarked_extern_vars ?=
> +
> +# NOTE: the _match variables are perl expressions -- not mere regular
> +# expressions -- so that you can extend them to match other patterns
> +# and easily extract matched variable names.
> +# For example, if your project declares some global variables via
> +# a macro like this: GLOBAL(type, var_name, initializer), then you
> +# can override this definition to automatically extract those names:
> +# export _gl_TS_var_match = \
> +#   /^(?:$(_gl_TS_extern)) .*?\**(\w+)(\[.*?\])?;/ || /\bGLOBAL\(.*?,\s*(.*?),/
> +_gl_TS_var_match ?= /^(?:$(_gl_TS_extern)) .*?(\w+)(\[.*?\])?;/
> +
> +# The names of object files in (or relative to) $(_gl_TS_dir).
> +_gl_TS_obj_files ?= *.$(OBJEXT)
> +
> +# Files in which to search for the one-line style extern declarations.
> +# $(_gl_TS_dir)-relative.
> +_gl_TS_headers ?= $(noinst_HEADERS)
> +
> +.PHONY: _gl_tight_scope
> +_gl_tight_scope: $(bin_PROGRAMS)
> +	t=exceptions-$$$$;						\
> +	trap 's=$$?; rm -f $$t; exit $$s' 0;				\
> +	for sig in 1 2 3 13 15; do					\
> +	  eval "trap 'v=`expr $$sig + 128`; (exit $$v); exit $$v' $$sig"; \
> +	done;								\
> +	src=`for f in $(SOURCES); do					\
> +	       test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`;	\
> +	hdr=`for f in $(_gl_TS_headers); do				\
> +	       test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`;	\
> +	( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_functions);	\
> +	  grep -h -A1 '^extern .*[^;]$$' $$src				\
> +	    | grep -vE '^(extern |--)' | sed 's/ .*//';			\
> +	  perl -lne							\
> +	     '$(_gl_TS_function_match) and print "^$$1\$$"' $$hdr;	\
> +	) | sort -u > $$t;						\
> +	nm -e $(_gl_TS_obj_files) | sed -n 's/.* T //p'|grep -Ev -f $$t	\
> +	  && { echo the above functions should have static scope >&2;	\
> +	       exit 1; } || : ;						\
> +	( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_vars);	\
> +	  perl -lne '$(_gl_TS_var_match) and print "^$$1\$$"' $$hdr *.h	\
> +	) | sort -u > $$t;						\
> +	nm -e $(_gl_TS_obj_files) | sed -n 's/.* [BCDGRS] //p'		\
> +            | sort -u | grep -Ev -f $$t					\
> +	  && { echo the above variables should have static scope >&2;	\
> +	       exit 1; } || :
> +# TS-end
> +endif
> -- 
> 1.7.6.4
> 
> --
> libvir-list mailing list
> libvir-list redhat com
> https://www.redhat.com/mailman/listinfo/libvir-list

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