makefile.maint

autoconf是一个产生可以自动配置源代码包

# -*-Makefile-*-
# This Makefile fragment is shared between the coreutils,
# CPPI, Bison, and Autoconf.

## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 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 2, 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, write to the Free Software
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
## 02110-1301, USA.

# This is reported not to work with make-3.79.1
# ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
ME := Makefile.maint

# Do not save the original name or timestamp in the .tar.gz file.
# Use --rsyncable if available.
GZIP_ENV = \
  "--no-name --best$$( \
    case $$(gzip --help) in \
    (*--rsyncable*) echo ' --rsyncable';; \
    esac \
  )"

CVS = cvs

CVS_LIST = sh -c ' \
    (cvsu --find --types=AFGM $$*) 2>/dev/null || \
    awk -F/ '\''{ \
	if (!$$1 && $$3 !~ /^-/) { \
	  f=FILENAME; \
	  sub(/CVS\/Entries/, "", f); \
	  print f $$2; \
	}}'\'' \
      $$(find $${*-*} -name Entries -print) /dev/null \
  ' dummy

CVS_LIST_EXCEPT = \
  $(CVS_LIST) | if test -f .x-$@; then grep -vEf .x-$@; else grep -v ChangeLog; fi

ifeq ($(origin prev_version_file), undefined)
  prev_version_file = .prev-version
endif

PREV_VERSION := $(shell cat $(prev_version_file))

tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
tag-this-version = $(subst .,_,$(VERSION))
this-cvs-tag = $(tag-package)-$(tag-this-version)
my_distdir = $(PACKAGE)-$(VERSION)

# Old releases are stored here.
# Used for diffs and xdeltas.
release_archive_dir ?= ../release

# 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.  ##
## --------------- ##

# Checks that don't require cvs.
# Run `changelog-check' last, as previous test may reveal problems requiring
# new ChangeLog entries.
local-checks-available = \
  po-check copyright-check writable-files m4-check author_mark_check \
  changelog-check strftime-check syntax-check makefile_path_separator_check \
  makefile-check
.PHONY: $(local-checks-available)

local-check = $(filter-out $(local-checks-to-skip), $(local-checks-available))

.PHONY: $(syntax-check-rules)
syntax-check-rules = \
  sc_cast_of_argument_to_free \
  sc_cast_of_x_alloc_return_value \
  sc_cast_of_alloca_return_value \
  sc_changelog \
  sc_dd_max_sym_length \
  sc_error_exit_success \
  sc_file_system \
  sc_obsolete_symbols \
  sc_prohibit_atoi_atof \
  sc_prohibit_jm_in_m4 \
  sc_root_tests \
  sc_space_tab \
  sc_sun_os_names \
  sc_system_h_headers \
  sc_tight_scope \
  sc_trailing_space \
  sc_unmarked_diagnostics \
  sc_texi_notab

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

#	grep -nE '^#  *include <(string|stdlib)\.h>'			\
#	    $(srcdir)/{lib,src}/*.[chy] /dev/null &&			\
#	  { echo '$(ME): FIXME' 1>&2;					\
#	    exit 1; } || :
# FIXME: don't allow `#include .strings\.h' anywhere

sc_cast_of_argument_to_free:
	@shopt -s nullglob;						\
	grep -nE '\<free \(\('						\
	    $(srcdir)/{lib,src}/*.[chly] /dev/null &&			\
	  { echo '$(ME): don'\''t cast free argument' 1>&2;		\
	    exit 1; } || :

sc_cast_of_x_alloc_return_value:
	@shopt -s nullglob;						\
	grep -nE --exclude=$(srcdir)/lib/regex.c			\
	    '\*\) *x(m|c|re)alloc\>'					\
	    $(srcdir)/{lib,src}/*.[chy] /dev/null &&			\
	  { echo '$(ME): don'\''t cast x*alloc return value' 1>&2;	\
	    exit 1; } || :

sc_cast_of_alloca_return_value:
	@shopt -s nullglob;						\
	grep -nE '\*\) *alloca\>'					\
	    $(srcdir)/src/*.[chy] /dev/null &&				\
	  { echo '$(ME): don'\''t cast alloca return value' 1>&2;	\
	    exit 1; } || :

sc_space_tab:
	@grep -n '[ ]	'						\
	     $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): found SPACE-TAB sequence; remove the SPACE'	\
		1>&2; exit 1; } || :

# Don't use the old ato* functions in `real' code.
# They provide no error checking mechanism.
# Instead, use strto* functions.
sc_prohibit_atoi_atof:
	@grep -nE '\<(ato[filq]|ato''ll)\>'				\
	     $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): do not use ato''f, ato''i, ato''l, ato''ll, or ato''q'	\
		1>&2; exit 1; } || :

# 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 -nF 'error (EXIT_SUCCESS,'				\
	    $$(find -type f -name '*.[chly]') /dev/null &&		\
	  { echo '$(ME): found error (EXIT_SUCCESS' 1>&2;		\
	    exit 1; } || :

sc_file_system:
	@grep -ni 'file''system'					\
	     $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): found use of "file''system";'			\
	    'rewrite to use "file system"' 1>&2;			\
	    exit 1; } || :

sc_obsolete_symbols:
	@grep -nE '\<(HAVE_''FCNTL_H)\>'				\
	     $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): do not use HAVE_''FCNTL_H'			\
		1>&2; exit 1; } || :

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

# Do not use TABs in .texi files, except in verbatim environments.
sc_texi_notab:
	@sed '/^@verbatim/,/^@end verbatim/d' /dev/null			\
	    $$($(CVS_LIST_EXCEPT) | grep -E '\.(texi|txi|texinfo)$$' )	\
	  | grep '[	]' &&						\
	  { echo '$(ME): Do not use TABs in texinfo files outside of @verbatim'	\
		1>&2; exit 1; } || :

# Each nonempty line must start with a year number, or a TAB.
sc_changelog:
	@sed '/^-----/,$$d' $$(find . -maxdepth 2 -name ChangeLog)	\
	  | grep -n '^[^12	]' &&					\
	  { echo '$(ME): found unexpected prefix in a ChangeLog' 1>&2;	\
	    exit 1; } || :

# Ensure that dd's definition of LONGEST_SYMBOL stays in sync
# with the strings from the two affected variables.
dd_c = $(srcdir)/src/dd.c
sc_dd_max_sym_length:
ifneq ($(wildcard $(dd_c)),)
	@len=$$( (sed -n '/conversions\[\] =$$/,/^};/p' $(dd_c);\
		 sed -n '/flags\[\] =$$/,/^};/p' $(dd_c) )	\
		|sed -n '/"/s/^[^"]*"\([^"]*\)".*/\1/p'		\
              | wc --max-line-length);				\
	max=$$(sed -n '/^#define LONGEST_SYMBOL /s///p' $(dd_c)	\
	      |tr -d '"' | wc --max-line-length);		\
	if test "$$len" = "$$max"; then :; else			\
	  echo 'dd.c: LONGEST_SYMBOL is not longest' 1>&2;	\
	  exit 1;						\
	fi
endif

# Many m4 macros names once began with `jm_'.
# On 2004-04-13, they were all changed to start with gl_ instead.
# Make sure that none are inadvertently reintroduced.
sc_prohibit_jm_in_m4:
	@grep -nE 'jm_[A-Z]' /dev/null					\
		$$($(CVS_LIST) $(srcdir)/m4 |grep '\.m4$$') &&		\
	    { echo '$(ME): do not use jm_ in m4 macro names'		\
	      1>&2; exit 1; } || :

sc_root_tests:
	@t1=sc-root.expected; t2=sc-root.actual;			\
	grep -nl '^PRIV_CHECK_ARG=require-root'				\
	  $$($(CVS_LIST) tests) |sed s/tests/./ |sort > $$t1;		\
	sed -n 's,	cd \([^ ]*\) .*MAKE..check TESTS=\(.*\),./\1/\2,p' \
	  $(srcdir)/tests/Makefile.am |sort > $$t2;			\
	diff -u $$t1 $$t2 || diff=1;					\
	rm -f $$t1 $$t2;						\
	test "$$diff"							\
	  && { echo 'tests/Makefile.am: missing check-root action'>&2;	\
	       exit 1; } || :

# Create a list of regular expressions matching the names
# of files included from system.h.  Exclude a couple.
.re-list:
	@shopt -s nullglob;						\
	sed -n '/^# *include /s///p' $(srcdir)/src/system.[h] /dev/null	\
	  | grep -Ev 'sys/(param|file)\.h'				\
	  | sed 's/ .*//;;s/^["<]/^# *include [<"]/;s/\.h[">]$$/\\.h[">]/' \
	  > $@-t
	@mv $@-t $@

# Files in src/ should not include directly any of
# the headers already included via system.h.
sc_system_h_headers: .re-list
	@if test -f $(srcdir)/src/system.h; then				\
	  trap 'rc=$$?; rm -f .re-list; exit $$rc' 0 1 2 3 15;		\
	  grep -nE -f .re-list						\
	      $$($(CVS_LIST) src |					\
		 grep -Ev '((copy|system)\.h|parse-gram\.c)$$')		\
	    && { echo '$(ME): the above are already included via system.h'\
		  1>&2;  exit 1; } || :;				\
	fi

sc_sun_os_names:
	@grep -nEi \
	    'solaris[^[:alnum:]]*2\.(7|8|9|[1-9][0-9])|sunos[^[:alnum:]][6-9]' \
	  $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): found misuse of Sun OS version numbers' 1>&2;	\
	    exit 1; } || :

sc_tight_scope:
	@if test -d src; then $(MAKE) -C src $@; else :; fi

sc_trailing_space:
	@grep -n '[	 ]$$'						\
	     $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): found trailing space(s)'			\
		1>&2; exit 1; } || :

# 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:
	@shopt -s nullglob;						\
	grep -nE '\<error \([^"]*"[^"]*[a-z]{3}'			\
	    $(srcdir)/{lib,src}/*.c /dev/null				\
	  | grep -v '_(' &&						\
	  { echo '$(ME): found unmarked diagnostic(s)' 1>&2;		\
	    exit 1; } || :

# Ensure that date's --help output stays in sync with the info
# documentation for GNU strftime.  The only exception is %N,
# which date accepts but GNU strftime does not.
extract_char = sed 's/^[^%][^%]*%\(.\).*/\1/'
strftime-check:
	if test -f $(srcdir)/src/date.c; then				\
	  grep '^  %.  ' $(srcdir)/src/date.c | sort			\
	    | $(extract_char) > $@-src;					\
	  { echo N;							\
	    info libc date calendar format | grep '^    `%.'\'		\
	      | $(extract_char); } | sort > $@-info;			\
	  diff -u $@-src $@-info || exit 1;				\
	  rm -f $@-src $@-info;						\
	fi

# 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.
makefile-check:
	grep -nE '@[A-Z_0-9]+@' `find . -name Makefile.am` \
	  && { echo 'Makefile.maint: use $$(...), not @...@' 1>&2; exit 1; } || :

news-date-check: NEWS
	today=`date +%Y-%m-%d`;	\
	if head NEWS | grep $$today >/dev/null; then \
	  :; \
	else \
	  echo "today's date is not in NEWS" 1>&2; \
	  exit 1; \