maint.mk

   1 # -*-Makefile-*-
   2 # This Makefile fragment tries to be general-purpose enough to be
   3 # used by many projects via the gnulib maintainer-makefile module.
   4
   5 ## Copyright (C) 2001-2010 Free Software Foundation, Inc.
   6 ##
   7 ## This program is free software: you can redistribute it and/or modify
   8 ## it under the terms of the GNU General Public License as published by
   9 ## the Free Software Foundation, either version 3 of the License, or
  10 ## (at your option) any later version.
  11 ##
  12 ## This program is distributed in the hope that it will be useful,
  13 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ## GNU General Public License for more details.
  16 ##
  17 ## You should have received a copy of the GNU General Public License
  18 ## along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 # This is reported not to work with make-3.79.1
  21 # ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
  22 ME := maint.mk
  23
  24 # Override this in cfg.mk if you use a non-standard build-aux directory.
  25 build_aux ?= $(srcdir)/build-aux
  26
  27 # Do not save the original name or timestamp in the .tar.gz file.
  28 # Use --rsyncable if available.
  29 gzip_rsyncable := \
  30   $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null && echo --rsyncable)
  31 GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
  32
  33 GIT = git
  34 VC = $(GIT)
  35 VC-tag = git tag -s -m '$(VERSION)' -u '$(gpg_key_ID)'
  36
  37 VC_LIST = $(build_aux)/vc-list-files -C $(srcdir)
  38
  39 # You can override this variable in cfg.mk to set your own regexp
  40 # matching files to ignore.
  41 VC_LIST_ALWAYS_EXCLUDE_REGEX ?= ^$$
  42
  43 # This is to preprocess robustly the output of $(VC_LIST), so that even
  44 # when $(srcdir) is a pathological name like "....", the leading sed command
  45 # removes only the intended prefix.
  46 _dot_escaped_srcdir = $(subst .,\.,$(srcdir))
  47
  48 # Post-process $(VC_LIST) output, prepending $(srcdir)/, but only
  49 # when $(srcdir) is not ".".
  50 ifeq ($(srcdir),.)
  51 _prepend_srcdir_prefix =
  52 else
  53 _prepend_srcdir_prefix = | sed 's|^|$(srcdir)/|'
  54 endif
  55
  56 # In order to be able to consistently filter "."-relative names,
  57 # (i.e., with no $(srcdir) prefix), this definition is careful to
  58 # remove any $(srcdir) prefix, and to restore what it removes.
  59 VC_LIST_EXCEPT = \
  60   $(VC_LIST) | sed 's|^$(_dot_escaped_srcdir)/||' \
  61         | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
  62           else grep -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
  63         | grep -Ev -e '$(VC_LIST_ALWAYS_EXCLUDE_REGEX)' \
  64         $(_prepend_srcdir_prefix)
  65
  66 ifeq ($(origin prev_version_file), undefined)
  67   prev_version_file = $(srcdir)/.prev-version
  68 endif
  69
  70 PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
  71 VERSION_REGEXP = $(subst .,\.,$(VERSION))
  72 PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
  73
  74 ifeq ($(VC),$(GIT))
  75 this-vc-tag = v$(VERSION)
  76 this-vc-tag-regexp = v$(VERSION_REGEXP)
  77 else
  78 tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
  79 tag-this-version = $(subst .,_,$(VERSION))
  80 this-vc-tag = $(tag-package)-$(tag-this-version)
  81 this-vc-tag-regexp = $(this-vc-tag)
  82 endif
  83 my_distdir = $(PACKAGE)-$(VERSION)
  84
  85 # Old releases are stored here.
  86 release_archive_dir ?= ../release
  87
  88 # Override gnu_rel_host and url_dir_list in cfg.mk if these are not right.
  89 # Use alpha.gnu.org for alpha and beta releases.
  90 # Use ftp.gnu.org for stable releases.
  91 gnu_ftp_host-alpha = alpha.gnu.org
  92 gnu_ftp_host-beta = alpha.gnu.org
  93 gnu_ftp_host-stable = ftp.gnu.org
  94 gnu_rel_host ?= $(gnu_ftp_host-$(RELEASE_TYPE))
  95
  96 ifeq ($(gnu_rel_host),ftp.gnu.org)
  97 url_dir_list ?= http://ftpmirror.gnu.org/$(PACKAGE)
  98 else
  99 url_dir_list ?= ftp://$(gnu_rel_host)/gnu/$(PACKAGE)
 100 endif
 101
 102 # Override this in cfg.mk if you are using a different format in your
 103 # NEWS file.
 104 today = $(shell date +%Y-%m-%d)
 105 news-check-regexp ?= '^\*.* $(VERSION_REGEXP) \($(today)\)'
 106
 107 # Prevent programs like 'sort' from considering distinct strings to be equal.
 108 # Doing it here saves us from having to set LC_ALL elsewhere in this file.
 109 export LC_ALL = C
 110
 111 ## --------------- ##
 112 ## Sanity checks.  ##
 113 ## --------------- ##
 114
 115 _cfg_mk := $(shell test -f $(srcdir)/cfg.mk && echo '$(srcdir)/cfg.mk')
 116
 117 # Collect the names of rules starting with `sc_'.
 118 syntax-check-rules := $(sort $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' \
 119                         $(srcdir)/$(ME) $(_cfg_mk)))
 120 .PHONY: $(syntax-check-rules)
 121
 122 local-checks-available = \
 123   $(syntax-check-rules)
 124 .PHONY: $(local-checks-available)
 125
 126 # Arrange to print the name of each syntax-checking rule just before running it.
 127 $(syntax-check-rules): %: %.m
 128 sc_m_rules_ = $(patsubst %, %.m, $(syntax-check-rules))
 129 .PHONY: $(sc_m_rules_)
 130 $(sc_m_rules_):
 131         @echo $(patsubst sc_%.m, %, $@)
 132         @date +%s.%N > .sc-start-$(basename $@)
 133
 134 # Compute and print the elapsed time for each syntax-check rule.
 135 sc_z_rules_ = $(patsubst %, %.z, $(syntax-check-rules))
 136 .PHONY: $(sc_z_rules_)
 137 $(sc_z_rules_): %.z: %
 138         @end=$$(date +%s.%N);                                           \
 139         start=$$(cat .sc-start-$*);                                     \
 140         rm -f .sc-start-$*;                                             \
 141         awk -v s=$$start -v e=$$end                                     \
 142           'END {printf "%.2f $(patsubst sc_%,%,$*)\n", e - s}' < /dev/null
 143
 144 # The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
 145 # that computes and prints elapsed time.
 146 local-check :=                                                          \
 147   $(patsubst sc_%, sc_%.z,                                              \
 148     $(filter-out $(local-checks-to-skip), $(local-checks-available)))
 149
 150 syntax-check: $(local-check)
 151 #       @grep -nE '#  *include <(limits|std(def|arg|bool))\.h>'         \
 152 #           $$(find -type f -name '*.[chly]') &&                        \
 153 #         { echo '$(ME): found conditional include' 1>&2;               \
 154 #           exit 1; } || :
 155
 156 #       grep -nE '^#  *include <(string|stdlib)\.h>'                    \
 157 #           $(srcdir)/{lib,src}/*.[chy] &&                              \
 158 #         { echo '$(ME): FIXME' 1>&2;                                   \
 159 #           exit 1; } || :
 160 # FIXME: don't allow `#include .strings\.h' anywhere
 161
 162 # _sc_search_regexp
 163 #
 164 # This macro searches for a given construct in the selected files and
 165 # then takes some action.
 166 #
 167 # Parameters (shell variables):
 168 #
 169 #  prohibit | require
 170 #
 171 #     Regular expression (ERE) denoting either a forbidden construct
 172 #     or a required construct.  Those arguments are exclusive.
 173 #
 174 #  in_vc_files | in_files
 175 #
 176 #     grep-E-style regexp denoting the files to check.  If no files
 177 #     are specified the default are all the files that are under
 178 #     version control.
 179 #
 180 #  containing | non_containing
 181 #
 182 #     Select the files (non) containing strings matching this regexp.
 183 #     If both arguments are specified then CONTAINING takes
 184 #     precedence.
 185 #
 186 #  with_grep_options
 187 #
 188 #     Extra options for grep.
 189 #
 190 #  ignore_case
 191 #
 192 #     Ignore case.
 193 #
 194 #  halt
 195 #
 196 #     Message to display before to halting execution.
 197
 198 # By default, _sc_search_regexp does not ignore case.
 199 export ignore_case =
 200 _ignore_case = $$(test -n "$$ignore_case" && echo -i || :)
 201
 202 define _sc_say_and_exit
 203    dummy=; : so we do not need a semicolon before each use;             \
 204    { echo -e "$(ME): $$msg" 1>&2; exit 1; };
 205 endef
 206
 207 # _sc_search_regexp used to be named _prohibit_regexp.  However,
 208 # upgrading to the new definition and leaving the old name undefined
 209 # would usually convert each custom rule using $(_prohibit_regexp)
 210 # (usually defined in cfg.mk) into a no-op.  This definition ensures
 211 # that people know right away if they're still using the old name.
 212 # FIXME: remove in 2012.
 213 _prohibit_regexp = \
 214   $(error '*** you need to s/_prohibit_regexp/_sc_search_regexp/, and adapt')
 215
 216 define _sc_search_regexp
 217    dummy=; : so we do not need a semicolon before each use;             \
 218                                                                         \
 219    : Check arguments;                                                   \
 220    test -n "$$prohibit" && test -n "$$require"                          \
 221      && { msg='Cannot specify both prohibit and require'                \
 222           $(_sc_say_and_exit) } || :;                                   \
 223    test -z "$$prohibit" && test -z "$$require"                          \
 224      && { msg='Should specify either prohibit or require'               \
 225           $(_sc_say_and_exit) } || :;                                   \
 226    test -n "$$in_vc_files" && test -n "$$in_files"                      \
 227      && { msg='Cannot specify both in_vc_files and in_files'            \
 228           $(_sc_say_and_exit) } || :;                                   \
 229    test "x$$halt" != x                                                  \
 230      || { msg='halt not defined' $(_sc_say_and_exit) };                 \
 231                                                                         \
 232    : Filter by file name;                                               \
 233    if test -n "$$in_files"; then                                        \
 234      files=$$(find $(srcdir) | grep -E "$$in_files");                   \
 235    else                                                                 \
 236      files=$$($(VC_LIST_EXCEPT));                                       \
 237      if test -n "$$in_vc_files"; then                                   \
 238        files=$$(echo "$$files" | grep -E "$$in_vc_files");              \
 239      fi;                                                                \
 240    fi;                                                                  \
 241                                                                         \
 242    : Filter by content;                                                 \
 243    test -n "$$files" && test -n "$$containing"                          \
 244      && { files=$$(grep -l "$$containing" $$files); } || :;             \
 245    test -n "$$files" && test -n "$$non_containing"                      \
 246      && { files=$$(grep -vl "$$non_containing" $$files); } || :;        \
 247                                                                         \
 248    : Check for the construct;                                           \
 249    if test -n "$$files"; then                                           \
 250      if test -n "$$prohibit"; then                                      \
 251        grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
 252          && { msg="$$halt" $(_sc_say_and_exit) } || :;                  \
 253      else                                                               \
 254        grep $$with_grep_options $(_ignore_case) -LE "$$require" $$files \
 255            | grep .                                                     \
 256          && { msg="$$halt" $(_sc_say_and_exit) } || :;                  \
 257      fi                                                                 \
 258    else :;                                                              \
 259    fi || :;
 260 endef
 261
 262 sc_avoid_if_before_free:
 263         @$(build_aux)/useless-if-before-free                            \
 264                 $(useless_free_options)                                 \
 265             $$($(VC_LIST_EXCEPT) | grep -v useless-if-before-free) &&   \
 266           { echo '$(ME): found useless "if" before "free" above' 1>&2;  \
 267             exit 1; } || :
 268
 269 sc_cast_of_argument_to_free:
 270         @prohibit='\<free *\( *\(' halt='don'\''t cast free argument'   \
 271           $(_sc_search_regexp)
 272
 273 sc_cast_of_x_alloc_return_value:
 274         @prohibit='\*\) *x(m|c|re)alloc\>'                              \
 275         halt='don'\''t cast x*alloc return value'                       \
 276           $(_sc_search_regexp)
 277
 278 sc_cast_of_alloca_return_value:
 279         @prohibit='\*\) *alloca\>'                                      \
 280         halt='don'\''t cast alloca return value'                        \
 281           $(_sc_search_regexp)
 282
 283 sc_space_tab:
 284         @prohibit='[ ]  '                                               \
 285         halt='found SPACE-TAB sequence; remove the SPACE'               \
 286           $(_sc_search_regexp)
 287
 288 # Don't use *scanf or the old ato* functions in `real' code.
 289 # They provide no error checking mechanism.
 290 # Instead, use strto* functions.
 291 sc_prohibit_atoi_atof:
 292         @prohibit='\<([fs]?scanf|ato([filq]|ll)) *\('                           \
 293         halt='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q'   \
 294           $(_sc_search_regexp)
 295
 296 # Use STREQ rather than comparing strcmp == 0, or != 0.
 297 sc_prohibit_strcmp:
 298         @grep -nE '! *str''cmp *\(|\<str''cmp *\([^)]+\) *=='           \
 299             $$($(VC_LIST_EXCEPT))                                       \
 300           | grep -vE ':# *define STREQ\(' &&                            \
 301           { echo '$(ME): use STREQ in place of the above uses of str''cmp' \
 302                 1>&2; exit 1; } || :
 303
 304 # Pass EXIT_*, not number, to usage, exit, and error (when exiting)
 305 # Convert all uses automatically, via these two commands:
 306 # git grep -l '\<exit *(1)' \
 307 #  | grep -vEf .x-sc_prohibit_magic_number_exit \
 308 #  | xargs --no-run-if-empty \
 309 #      perl -pi -e 's/(^|[^.])\b(exit ?)\(1\)/$1$2(EXIT_FAILURE)/'
 310 # git grep -l '\<exit *(0)' \
 311 #  | grep -vEf .x-sc_prohibit_magic_number_exit \
 312 #  | xargs --no-run-if-empty \
 313 #      perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
 314 sc_prohibit_magic_number_exit:
 315         @prohibit='(^|[^.])\<(usage|exit) ?\([0-9]|\<error ?\([1-9][0-9]*,'     \
 316         halt='use EXIT_* values rather than magic number'                       \
 317           $(_sc_search_regexp)
 318
 319 # Using EXIT_SUCCESS as the first argument to error is misleading,
 320 # since when that parameter is 0, error does not exit.  Use `0' instead.
 321 sc_error_exit_success:
 322         @prohibit='error *\(EXIT_SUCCESS,'                              \
 323         in_vc_files='\.[chly]$$'                                        \
 324         halt='found error (EXIT_SUCCESS'                                \
 325          $(_sc_search_regexp)
 326
 327 # `FATAL:' should be fully upper-cased in error messages
 328 # `WARNING:' should be fully upper-cased, or fully lower-cased
 329 sc_error_message_warn_fatal:
 330         @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))              \
 331             | grep -E '"Warning|"Fatal|"fatal' &&                       \
 332           { echo '$(ME): use FATAL, WARNING or warning' 1>&2;           \
 333             exit 1; } || :
 334
 335 # Error messages should not start with a capital letter
 336 sc_error_message_uppercase:
 337         @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))              \
 338             | grep -E '"[A-Z]'                                          \
 339             | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' &&           \
 340           { echo '$(ME): found capitalized error message' 1>&2;         \
 341             exit 1; } || :
 342
 343 # Error messages should not end with a period
 344 sc_error_message_period:
 345         @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))              \
 346             | grep -E '[^."]\."' &&                                     \
 347           { echo '$(ME): found error message ending in period' 1>&2;    \
 348             exit 1; } || :
 349
 350 sc_file_system:
 351         @prohibit=file''system                                          \
 352         ignore_case=1                                                   \
 353         halt='found use of "file''system"; spell it "file system"'      \
 354           $(_sc_search_regexp)
 355
 356 # Don't use cpp tests of this symbol.  All code assumes config.h is included.
 357 sc_prohibit_have_config_h:
 358         @prohibit='^# *if.*HAVE''_CONFIG_H'                             \
 359         halt='found use of HAVE''_CONFIG_H; remove'                     \
 360           $(_sc_search_regexp)
 361
 362 # Nearly all .c files must include <config.h>.  However, we also permit this
 363 # via inclusion of a package-specific header, if cfg.mk specified one.
 364 # config_h_header must be suitable for grep -E.
 365 config_h_header ?= <config\.h>
 366 sc_require_config_h:
 367         @require='^# *include $(config_h_header)'                       \
 368         in_vc_files='\.c$$'                                             \
 369         halt='the above files do not include <config.h>'                \
 370           $(_sc_search_regexp)
 371
 372 # You must include <config.h> before including any other header file.
 373 # This can possibly be via a package-specific header, if given by cfg.mk.
 374 sc_require_config_h_first:
 375         @if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then       \
 376           fail=0;                                                       \
 377           for i in $$($(VC_LIST_EXCEPT) | grep '\.c$$'); do             \
 378             grep '^# *include\>' $$i | sed 1q                           \
 379                 | grep -E '^# *include $(config_h_header)' > /dev/null  \
 380               || { echo $$i; fail=1; };                                 \
 381           done;                                                         \
 382           test $$fail = 1 &&                                            \
 383             { echo '$(ME): the above files include some other header'   \
 384                 'before <config.h>' 1>&2; exit 1; } || :;               \
 385         else :;                                                         \
 386         fi
 387
 388 sc_prohibit_HAVE_MBRTOWC:
 389         @prohibit='\bHAVE_MBRTOWC\b'                                    \
 390         halt="do not use $$prohibit; it is always defined"              \
 391           $(_sc_search_regexp)
 392
 393 # To use this "command" macro, you must first define two shell variables:
 394 # h: the header, enclosed in <> or ""
 395 # re: a regular expression that matches IFF something provided by $h is used.
 396 define _sc_header_without_use
 397   dummy=; : so we do not need a semicolon before each use;              \
 398   h_esc=`echo "$$h"|sed 's/\./\\\\./g'`;                                \
 399   if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then              \
 400     files=$$(grep -l '^# *include '"$$h_esc"                            \
 401              $$($(VC_LIST_EXCEPT) | grep '\.c$$')) &&                   \
 402     grep -LE "$$re" $$files | grep . &&                                 \
 403       { echo "$(ME): the above files include $$h but don't use it"      \
 404         1>&2; exit 1; } || :;                                           \
 405   else :;                                                               \
 406   fi
 407 endef
 408
 409 # Prohibit the inclusion of assert.h without an actual use of assert.
 410 sc_prohibit_assert_without_use:
 411         @h='<assert.h>' re='\<assert *\(' $(_sc_header_without_use)
 412
 413 # Prohibit the inclusion of close-stream.h without an actual use.
 414 sc_prohibit_close_stream_without_use:
 415         @h='"close-stream.h"' re='\<close_stream *\(' $(_sc_header_without_use)
 416
 417 # Prohibit the inclusion of getopt.h without an actual use.
 418 sc_prohibit_getopt_without_use:
 419         @h='<getopt.h>' re='\<getopt(_long)? *\(' $(_sc_header_without_use)
 420
 421 # Don't include quotearg.h unless you use one of its functions.
 422 sc_prohibit_quotearg_without_use:
 423         @h='"quotearg.h"' re='\<quotearg(_[^ ]+)? *\(' $(_sc_header_without_use)
 424
 425 # Don't include quote.h unless you use one of its functions.
 426 sc_prohibit_quote_without_use:
 427         @h='"quote.h"' re='\<quote(_n)? *\(' $(_sc_header_without_use)
 428
 429 # Don't include this header unless you use one of its functions.
 430 sc_prohibit_long_options_without_use:
 431         @h='"long-options.h"' re='\<parse_long_options *\(' \
 432           $(_sc_header_without_use)
 433
 434 # Don't include this header unless you use one of its functions.
 435 sc_prohibit_inttostr_without_use:
 436         @h='"inttostr.h"' re='\<(off|[iu]max|uint)tostr *\(' \
 437           $(_sc_header_without_use)
 438
 439 # Don't include this header unless you use one of its functions.
 440 sc_prohibit_ignore_value_without_use:
 441         @h='"ignore-value.h"' re='\<ignore_(value|ptr) *\(' \
 442           $(_sc_header_without_use)
 443
 444 # Don't include this header unless you use one of its functions.
 445 sc_prohibit_error_without_use:
 446         @h='"error.h"' \
 447         re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
 448           $(_sc_header_without_use)
 449
 450 # Don't include xalloc.h unless you use one of its functions.
 451 # Consider these symbols:
 452 # perl -lne '/^# *define (\w+)\(/ and print $1' lib/xalloc.h|grep -v '^__';
 453 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/xalloc.h
 454 # Divide into two sets on case, and filter each through this:
 455 # | sort | perl -MRegexp::Assemble -le \
 456 #  'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
 457 # Note this was produced by the above:
 458 # _xa1 = \
 459 #x(((2n?)?re|c(har)?|n(re|m)|z)alloc|alloc_(oversized|die)|m(alloc|emdup)|strdup)
 460 # But we can do better, in at least two ways:
 461 # 1) take advantage of two "dup"-suffixed strings:
 462 # x(((2n?)?re|c(har)?|n(re|m)|[mz])alloc|alloc_(oversized|die)|(mem|str)dup)
 463 # 2) notice that "c(har)?|[mz]" is equivalent to the shorter and more readable
 464 # "char|[cmz]"
 465 # x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
 466 _xa1 = x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
 467 _xa2 = X([CZ]|N?M)ALLOC
 468 sc_prohibit_xalloc_without_use:
 469         @h='"xalloc.h"' \
 470         re='\<($(_xa1)|$(_xa2)) *\('\
 471           $(_sc_header_without_use)
 472
 473 # Extract function names:
 474 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/hash.h
 475 _hash_re = \
 476 clear|delete|free|get_(first|next)|insert|lookup|print_statistics|reset_tuning
 477 _hash_fn = \<($(_hash_re)) *\(
 478 _hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
 479 sc_prohibit_hash_without_use:
 480         @h='"hash.h"' \
 481         re='$(_hash_fn)|$(_hash_struct)'\
 482           $(_sc_header_without_use)
 483
 484 sc_prohibit_hash_pjw_without_use:
 485         @h='"hash-pjw.h"' \
 486         re='\<hash_pjw *\(' \
 487           $(_sc_header_without_use)
 488
 489 sc_prohibit_safe_read_without_use:
 490         @h='"safe-read.h"' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
 491           $(_sc_header_without_use)
 492
 493 sc_prohibit_argmatch_without_use:
 494         @h='"argmatch.h"' \
 495         re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<argmatch(_exit_fn|_(in)?valid) *\()' \
 496           $(_sc_header_without_use)
 497
 498 sc_prohibit_canonicalize_without_use:
 499         @h='"canonicalize.h"' \
 500         re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode)' \
 501           $(_sc_header_without_use)
 502
 503 sc_prohibit_root_dev_ino_without_use:
 504         @h='"root-dev-ino.h"' \
 505         re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
 506           $(_sc_header_without_use)
 507
 508 sc_prohibit_openat_without_use:
 509         @h='"openat.h"' \
 510         re='\<(openat_(permissive|needs_fchdir|(save|restore)_fail)|l?(stat|ch(own|mod))at|(euid)?accessat)\>' \
 511           $(_sc_header_without_use)
 512
 513 # Prohibit the inclusion of c-ctype.h without an actual use.
 514 ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
 515 |isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
 516 sc_prohibit_c_ctype_without_use:
 517         @h='[<"]c-ctype.h[">]' re='\<c_($(ctype_re)) *\(' \
 518           $(_sc_header_without_use)
 519
 520 _empty =
 521 _sp = $(_empty) $(_empty)
 522 # The following list was generated by running:
 523 # man signal.h|col -b|perl -ne '/bsd_signal.*;/.../sigwaitinfo.*;/ and print' \
 524 #   | perl -lne '/^\s+(?:int|void).*?(\w+).*/ and print $1' | fmt
 525 _sig_functions = \
 526   bsd_signal kill killpg pthread_kill pthread_sigmask raise sigaction \
 527   sigaddset sigaltstack sigdelset sigemptyset sigfillset sighold sigignore \
 528   siginterrupt sigismember signal sigpause sigpending sigprocmask sigqueue \
 529   sigrelse sigset sigsuspend sigtimedwait sigwait sigwaitinfo
 530 _sig_function_re = $(subst $(_sp),|,$(strip $(_sig_functions)))
 531 # The following were extracted from "man signal.h" manually.
 532 _sig_types_and_consts =                                                 \
 533   MINSIGSTKSZ SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK           \
 534   SA_RESETHAND SA_RESTART SA_SIGINFO SIGEV_NONE SIGEV_SIGNAL            \
 535   SIGEV_THREAD SIGSTKSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SS_DISABLE    \
 536   SS_ONSTACK mcontext_t pid_t sig_atomic_t sigevent siginfo_t sigset_t  \
 537   sigstack sigval stack_t ucontext_t
 538 # generated via this:
 539 # perl -lne '/^#ifdef (SIG\w+)/ and print $1' lib/sig2str.c|sort -u|fmt -70
 540 _sig_names =                                                            \
 541   SIGABRT SIGALRM SIGALRM1 SIGBUS SIGCANCEL SIGCHLD SIGCLD SIGCONT      \
 542   SIGDANGER SIGDIL SIGEMT SIGFPE SIGFREEZE SIGGRANT SIGHUP SIGILL       \
 543   SIGINFO SIGINT SIGIO SIGIOT SIGKAP SIGKILL SIGKILLTHR SIGLOST SIGLWP  \
 544   SIGMIGRATE SIGMSG SIGPHONE SIGPIPE SIGPOLL SIGPRE SIGPROF SIGPWR      \
 545   SIGQUIT SIGRETRACT SIGSAK SIGSEGV SIGSOUND SIGSTKFLT SIGSTOP SIGSYS   \
 546   SIGTERM SIGTHAW SIGTRAP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGUSR1        \
 547   SIGUSR2 SIGVIRT SIGVTALRM SIGWAITING SIGWINCH SIGWIND SIGWINDOW       \
 548   SIGXCPU SIGXFSZ
 549 _sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
 550
 551 # Prohibit the inclusion of signal.h without an actual use.
 552 sc_prohibit_signal_without_use:
 553         @h='<signal.h>'                                                 \
 554         re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'          \
 555           $(_sc_header_without_use)
 556
 557 # Get the list of symbol names with this:
 558 # perl -lne '/^# *define (\w+)\(/ and print $1' lib/intprops.h|grep -v '^s'|fmt
 559 _intprops_names =                                                       \
 560   TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT             \
 561   TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM           \
 562   INT_STRLEN_BOUND INT_BUFSIZE_BOUND
 563 _intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
 564 # Prohibit the inclusion of intprops.h without an actual use.
 565 sc_prohibit_intprops_without_use:
 566         @h='"intprops.h"'                                               \
 567         re='\<($(_intprops_syms_re)) *\('                               \
 568           $(_sc_header_without_use)
 569
 570 sc_obsolete_symbols:
 571         @prohibit='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'                     \
 572         halt='do not use HAVE''_FCNTL_H or O'_NDELAY                    \
 573           $(_sc_search_regexp)
 574
 575 # FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
 576
 577 # Each nonempty ChangeLog line must start with a year number, or a TAB.
 578 sc_changelog:
 579         @prohibit='^[^12        ]'                                      \
 580         in_vc_files='^ChangeLog$$'                                      \
 581         halt='found unexpected prefix in a ChangeLog'                   \
 582           $(_sc_search_regexp)
 583
 584 # Ensure that each .c file containing a "main" function also
 585 # calls set_program_name.
 586 sc_program_name:
 587         @require='set_program_name *\(m?argv\[0\]\);'                   \
 588         in_vc_files='\.c$$'                                             \
 589         containing='^main *('                                           \
 590         halt='the above files do not call set_program_name'             \
 591           $(_sc_search_regexp)
 592
 593 # Require that the final line of each test-lib.sh-using test be this one:
 594 # Exit $fail
 595 # Note: this test requires GNU grep's --label= option.
 596 Exit_witness_file ?= tests/test-lib.sh
 597 Exit_base := $(notdir $(Exit_witness_file))
 598 sc_require_test_exit_idiom:
 599         @if test -f $(srcdir)/$(Exit_witness_file); then                \
 600           die=0;                                                        \
 601           for i in $$(grep -l -F 'srcdir/$(Exit_base)'                  \
 602                 $$($(VC_LIST) tests)); do                               \
 603             tail -n1 $$i | grep '^Exit .' > /dev/null                   \
 604               && : || { die=1; echo $$i; }                              \
 605           done;                                                         \
 606           test $$die = 1 &&                                             \
 607             { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
 608               echo 1>&2 'Exit something';                               \
 609               exit 1; } || :;                                           \
 610         fi
 611
 612 sc_the_the:
 613         @prohibit='\<the ''the\>'                                       \
 614         ignore_case=1                                                   \
 615         halt='found use of "the ''the";'                                \
 616           $(_sc_search_regexp)
 617
 618 sc_trailing_blank:
 619         @prohibit='[     ]$$'                                           \
 620         halt='found trailing blank(s)'                                  \
 621           $(_sc_search_regexp)
 622
 623 # Match lines like the following, but where there is only one space
 624 # between the options and the description:
 625 #   -D, --all-repeated[=delimit-method]  print all duplicate lines\n
 626 longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
 627 sc_two_space_separator_in_usage:
 628         @prohibit='^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'         \
 629         halt='help2man requires at least two spaces between an option and its description'\
 630           $(_sc_search_regexp)
 631
 632 # Look for diagnostics that aren't marked for translation.
 633 # This won't find any for which error's format string is on a separate line.
 634 sc_unmarked_diagnostics:
 635         @grep -nE                                                       \
 636             '\<error *\([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT))      \
 637           | grep -v '_''(' &&                                           \
 638           { echo '$(ME): found unmarked diagnostic(s)' 1>&2;            \
 639             exit 1; } || :
 640
 641 # Avoid useless parentheses like those in this example:
 642 # #if defined (SYMBOL) || defined (SYM2)
 643 sc_useless_cpp_parens:
 644         @prohibit='^# *if .*defined *\('                                \
 645         halt='found useless parentheses in cpp directive'               \
 646           $(_sc_search_regexp)
 647
 648 # Require the latest GPL.
 649 sc_GPL_version:
 650         @prohibit='either ''version [^3]'                               \
 651         halt='GPL vN, N!=3'                                             \
 652           $(_sc_search_regexp)
 653
 654 # Require the latest GFDL.  Two regexp, since some .texi files end up
 655 # line wrapping between 'Free Documentation License,' and 'Version'.
 656 _GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
 657 sc_GFDL_version:
 658         @prohibit='$(_GFDL_regexp)'                                     \
 659         halt='GFDL vN, N!=3'                                            \
 660           $(_sc_search_regexp)
 661
 662 # Don't use Texinfo @acronym{} as it is not a good idea.
 663 sc_texinfo_acronym:
 664         @prohibit='@acronym{'                                           \
 665         in_vc_files='\.texi$$'                                          \
 666         halt='found use of Texinfo @acronym{}'                          \
 667           $(_sc_search_regexp)
 668
 669 cvs_keywords = \
 670   Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State
 671
 672 sc_prohibit_cvs_keyword:
 673         @prohibit='\$$($(cvs_keywords))\$$'                             \
 674         halt='do not use CVS keyword expansion'                         \
 675           $(_sc_search_regexp)
 676
 677 # This Perl code is slightly obfuscated.  Not only is each "$" doubled
 678 # because it's in a Makefile, but the $$c's are comments;  we cannot
 679 # use "#" due to the way the script ends up concatenated onto one line.
 680 # It would be much more concise, and would produce better output (including
 681 # counts) if written as:
 682 #   perl -ln -0777 -e '/\n(\n+)$/ and print "$ARGV: ".length $1' ...
 683 # but that would be far less efficient, reading the entire contents
 684 # of each file, rather than just the last two bytes of each.
 685 #
 686 # This is a perl script that is expected to be the single-quoted argument
 687 # to a command-line "-le".  The remaining arguments are file names.
 688 # Print the name of each file that ends in two or more newline bytes.
 689 # Exit nonzero if at least one such file is found, otherwise, exit 0.
 690 # Warn about, but otherwise ignore open failure.  Ignore seek/read failure.
 691 #
 692 # Use this if you want to remove trailing empty lines from selected files:
 693 #   perl -pi -0777 -e 's/\n\n+$/\n/' files...
 694 #
 695 detect_empty_lines_at_EOF_ =                                            \
 696   foreach my $$f (@ARGV) {                                              \
 697     open F, "<", $$f or (warn "failed to open $$f: $$!\n"), next;       \
 698     my $$p = sysseek (F, -2, 2);                                        \
 699     my $$c = "seek failure probably means file has < 2 bytes; ignore";  \
 700     my $$two;                                                           \
 701     defined $$p and $$p = sysread F, $$two, 2;                          \
 702     close F;                                                            \
 703     $$c = "ignore read failure";                                        \
 704     $$p && $$two eq "\n\n" and (print $$f), $$fail=1;                   \
 705     } END { exit defined $$fail }
 706 sc_prohibit_empty_lines_at_EOF:
 707         @perl -le '$(detect_empty_lines_at_EOF_)' $$($(VC_LIST_EXCEPT)) \
 708           || { echo '$(ME): the above files end with empty line(s)'     \
 709                 1>&2; exit 1; } || :;                                   \
 710
 711 # Make sure we don't use st_blocks.  Use ST_NBLOCKS instead.
 712 # This is a bit of a kludge, since it prevents use of the string
 713 # even in comments, but for now it does the job with no false positives.
 714 sc_prohibit_stat_st_blocks:
 715         @prohibit='[.>]st_blocks'                                       \
 716         halt='do not use st_blocks; use ST_NBLOCKS'                     \
 717           $(_sc_search_regexp)
 718
 719 # Make sure we don't define any S_IS* macros in src/*.c files.
 720 # They're already defined via gnulib's sys/stat.h replacement.
 721 sc_prohibit_S_IS_definition:
 722         @prohibit='^ *# *define  *S_IS'                                 \
 723         halt='do not define S_IS* macros; include <sys/stat.h>'         \
 724           $(_sc_search_regexp)
 725
 726 _ptm1 = use "test C1 && test C2", not "test C1 -''a C2"
 727 _ptm2 = use "test C1 || test C2", not "test C1 -''o C2"
 728 # Using test's -a and -o operators is not portable.
 729 # We prefer test over [, since the latter is spelled [[ in configure.ac.
 730 sc_prohibit_test_minus_ao:
 731         @prohibit='(\<test| \[+) .+ -[ao] '                             \
 732         halt='$(_ptm1); $(_ptm2)'                                       \
 733           $(_sc_search_regexp)
 734
 735 # Each program that uses proper_name_utf8 must link with one of the
 736 # ICONV libraries.  Otherwise, some ICONV library must appear in LDADD.
 737 # The perl -0777 invocation below extracts the possibly-multi-line
 738 # definition of LDADD from the appropriate Makefile.am and exits 0
 739 # when it contains "ICONV".
 740 sc_proper_name_utf8_requires_ICONV:
 741         @progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
 742         if test "x$$progs" != x; then                                   \
 743           fail=0;                                                       \
 744           for p in $$progs; do                                          \
 745             dir=$$(dirname "$$p");                                      \
 746             perl -0777                                                  \
 747               -ne 'exit !(/^LDADD =(.+?[^\\]\n)/ms && $$1 =~ /ICONV/)'  \
 748               $$dir/Makefile.am && continue;                            \
 749             base=$$(basename "$$p" .c);                                 \
 750             grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null \
 751               || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
 752           done;                                                         \
 753           test $$fail = 1 &&                                            \
 754             { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
 755               exit 1; } || :;                                           \
 756         fi
 757
 758 # Warn about "c0nst struct Foo const foo[]",
 759 # but not about "char const *const foo" or "#define const const".
 760 sc_redundant_const:
 761         @prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'          \
 762         halt='redundant "const" in declarations'                        \
 763           $(_sc_search_regexp)
 764
 765 sc_const_long_option:
 766         @grep '^ *static.*struct option ' $$($(VC_LIST_EXCEPT))         \
 767           | grep -Ev 'const struct option|struct option const' && {     \
 768               echo 1>&2 '$(ME): add "const" to the above declarations'; \
 769               exit 1; } || :
 770
 771 NEWS_hash =                                                             \
 772   $$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p'              \
 773        $(srcdir)/NEWS                                                   \
 774      | perl -0777 -pe                                                   \
 775         's/^Copyright.+?Free\sSoftware\sFoundation,\sInc\.\n//ms'       \
 776      | md5sum -                                                         \
 777      | sed 's/ .*//')
 778
 779 # Ensure that we don't accidentally insert an entry into an old NEWS block.
 780 sc_immutable_NEWS:
 781         @if test -f $(srcdir)/NEWS; then                                \
 782           test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : ||              \
 783             { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; }; \
 784         fi
 785
 786 # Update the hash stored above.  Do this after each release and
 787 # for any corrections to old entries.
 788 update-NEWS-hash: NEWS
 789         perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
 790           $(srcdir)/cfg.mk
 791
 792 # Ensure that we use only the standard $(VAR) notation,
 793 # not @...@ in Makefile.am, now that we can rely on automake
 794 # to emit a definition for each substituted variable.
 795 # We use perl rather than "grep -nE ..." to exempt a single
 796 # use of an @...@-delimited variable name in src/Makefile.am.
 797 # Allow the package to add exceptions via a hook in cfg.mk;
 798 # for example, @PRAGMA_SYSTEM_HEADER@ can be permitted by
 799 # setting this to ' && !/PRAGMA_SYSTEM_HEADER/'.
 800 _makefile_at_at_check_exceptions ?=
 801 sc_makefile_at_at_check:
 802         @perl -ne '/\@[A-Z_0-9]+\@/'$(_makefile_at_at_check_exceptions) \
 803           -e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}'    \
 804             $$($(VC_LIST_EXCEPT) | grep -E '(^|/)Makefile\.am$$')       \
 805           && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
 806
 807 news-check: NEWS
 808         if head $(srcdir)/NEWS | grep -E $(news-check-regexp)           \
 809             >/dev/null; then                                            \
 810           :;                                                            \
 811         else                                                            \
 812           echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2;      \
 813           exit 1;                                                       \
 814         fi
 815
 816 sc_makefile_TAB_only_indentation:
 817         @prohibit='^    [ ]{8}'                                         \
 818         in_vc_files='akefile|\.mk$$'                                    \
 819         halt='found TAB-8-space indentation'                            \
 820           $(_sc_search_regexp)
 821
 822 sc_m4_quote_check:
 823         @prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]'              \
 824         in_vc_files='(^configure\.ac|\.m4)$$'                           \
 825         halt='quote the first arg to AC_DEF*'                           \
 826           $(_sc_search_regexp)
 827
 828 fix_po_file_diag = \
 829 'you have changed the set of files with translatable diagnostics;\n\
 830 apply the above patch\n'
 831
 832 # Verify that all source files using _() are listed in po/POTFILES.in.
 833 po_file = po/POTFILES.in
 834 sc_po_check:
 835         @if test -f $(po_file); then                                    \
 836           grep -E -v '^(#|$$)' $(po_file)                               \
 837             | grep -v '^src/false\.c$$' | sort > $@-1;                  \
 838           files=;                                                       \
 839           for file in $$($(VC_LIST_EXCEPT)) lib/*.[ch]; do              \
 840             test -r $$file || continue;                                 \
 841             case $$file in                                              \
 842               *.m4|*.mk) continue ;;                                    \
 843               *.?|*.??) ;;                                              \
 844               *) continue;;                                             \
 845             esac;                                                       \
 846             case $$file in                                              \
 847             *.[ch])                                                     \
 848               base=`expr " $$file" : ' \(.*\)\..'`;                     \
 849               { test -f $$base.l || test -f $$base.y; } && continue;;   \
 850             esac;                                                       \
 851             files="$$files $$file";                                     \
 852           done;                                                         \
 853           grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files          \
 854             | sort -u > $@-2;                                           \
 855           diff -u -L $(po_file) -L $(po_file) $@-1 $@-2                 \
 856             || { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; };   \
 857           rm -f $@-1 $@-2;                                              \
 858         fi
 859
 860 # Sometimes it is useful to change the PATH environment variable
 861 # in Makefiles.  When doing so, it's better not to use the Unix-centric
 862 # path separator of `:', but rather the automake-provided `$(PATH_SEPARATOR)'.
 863 msg = '$(ME): Do not use `:'\'' above; use $$(PATH_SEPARATOR) instead'
 864 sc_makefile_path_separator_check:
 865         @prohibit='PATH[=].*:'                                          \
 866         in_vc_files='akefile|\.mk$$'                                    \
 867         halt=$(msg)                                                     \
 868           $(_sc_search_regexp)
 869
 870 # Check that `make alpha' will not fail at the end of the process.
 871 writable-files:
 872         if test -d $(release_archive_dir); then :; else                 \
 873           for file in $(distdir).tar.gz                                 \
 874                       $(release_archive_dir)/$(distdir).tar.gz; do      \
 875             test -e $$file || continue;                                 \
 876             test -w $$file                                              \
 877               || { echo ERROR: $$file is not writable; fail=1; };       \
 878           done;                                                         \
 879           test "$$fail" && exit 1 || : ;                                \
 880         fi
 881
 882 v_etc_file = lib/version-etc.c
 883 sample-test = tests/sample-test
 884 texi = doc/$(PACKAGE).texi
 885 # Make sure that the copyright date in $(v_etc_file) is up to date.
 886 # Do the same for the $(sample-test) and the main doc/.texi file.
 887 sc_copyright_check:
 888         @require='enum { COPYRIGHT_YEAR = '$$(date +%Y)' };'            \
 889         in_files=$(v_etc_file)                                          \
 890         halt='out of date copyright in $(v_etc_file); update it'        \
 891           $(_sc_search_regexp)
 892         @require='# Copyright \(C\) '$$(date +%Y)' Free'                \
 893         in_vc_files=$(sample-test)                                      \
 894         halt='out of date copyright in $(sample-test); update it'       \
 895           $(_sc_search_regexp)
 896         @require='Copyright @copyright\{\} .*'$$(date +%Y)' Free'       \
 897         in_vc_files=$(texi)                                             \
 898         halt='out of date copyright in $(texi); update it'              \
 899           $(_sc_search_regexp)
 900
 901 # If tests/help-version exists and seems to be new enough, assume that its
 902 # use of init.sh and path_prepend_ is correct, and ensure that every other
 903 # use of init.sh is identical.
 904 # This is useful because help-version cross-checks prog --version
 905 # with $(VERSION), which verifies that its path_prepend_ invocation
 906 # sets PATH correctly.  This is an inexpensive way to ensure that
 907 # the other init.sh-using tests also get it right.
 908 _hv_file ?= $(srcdir)/tests/help-version
 909 _hv_regex ?= ^ *\. [^ ]*/init\.sh
 910 sc_cross_check_PATH_usage_in_tests:
 911         @if test -f $(_hv_file); then                                   \
 912           if grep -l 'VERSION mismatch' $(_hv_file) >/dev/null          \
 913               && grep -lE '$(_hv_regex)' $(_hv_file) >/dev/null; then   \
 914             good=$$(grep -E '$(_hv_regex)' < $(_hv_file));              \
 915             grep -LFx "$$good"                                          \
 916                   $$(grep -lE '$(_hv_regex)' $$($(VC_LIST_EXCEPT)))     \
 917                 | grep . &&                                             \
 918               { echo "$(ME): the above files use path_prepend_ inconsistently" \
 919                   1>&2; exit 1; } || :;                                 \
 920           fi;                                                           \
 921         else                                                            \
 922           echo "$@: skipped: no such file: $(_hv_file)";                \
 923         fi
 924
 925 # #if HAVE_... will evaluate to false for any non numeric string.
 926 # That would be flagged by using -Wundef, however gnulib currently
 927 # tests many undefined macros, and so we can't enable that option.
 928 # So at least preclude common boolean strings as macro values.
 929 sc_Wundef_boolean:
 930         @prohibit='^#define.*(yes|no|true|false)$$'                     \
 931         in_files='$(CONFIG_INCLUDE)'                                    \
 932         halt='Use 0 or 1 for macro values'                              \
 933           $(_sc_search_regexp)
 934
 935 sc_vulnerable_makefile_CVE-2009-4029:
 936         @prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
 937         in_files=$$(find $(srcdir) -name Makefile.in)                   \
 938         halt='the above files are vulnerable; beware of running\n'\
 939 '"make dist*" rules, and upgrade to fixed automake\n'\
 940 'see http://bugzilla.redhat.com/542609 for details'                     \
 941           $(_sc_search_regexp)
 942
 943 vc-diff-check:
 944         (unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
 945         if test -s vc-diffs; then                               \
 946           cat vc-diffs;                                         \
 947           echo "Some files are locally modified:" 1>&2;         \
 948           exit 1;                                               \
 949         else                                                    \
 950           rm vc-diffs;                                          \
 951         fi
 952
 953 rel-files = $(DIST_ARCHIVES)
 954
 955 gnulib_dir ?= $(srcdir)/gnulib
 956 gnulib-version = $$(cd $(gnulib_dir) && git describe)
 957 bootstrap-tools ?= autoconf,automake,gnulib
 958
 959 # If it's not already specified, derive the GPG key ID from
 960 # the signed tag we've just applied to mark this release.
 961 gpg_key_ID ?= \
 962   $$(git cat-file tag v$(VERSION) > .ann-sig \
 963      && gpgv .ann-sig - < /dev/null 2>&1 \
 964           | sed -n '/.*key ID \([0-9A-F]*\)/s//\1/p'; rm -f .ann-sig)
 965
 966 announcement: NEWS ChangeLog $(rel-files)
 967         @$(build_aux)/announce-gen                                      \
 968             --release-type=$(RELEASE_TYPE)                              \
 969             --package=$(PACKAGE)                                        \
 970             --prev=$(PREV_VERSION)                                      \
 971             --curr=$(VERSION)                                           \
 972             --gpg-key-id=$(gpg_key_ID)                                  \
 973             --news=$(srcdir)/NEWS                                       \
 974             --bootstrap-tools=$(bootstrap-tools)                        \
 975             --gnulib-version=$(gnulib-version)                          \
 976             --no-print-checksums                                        \
 977             $(addprefix --url-dir=, $(url_dir_list))
 978
 979 ## ---------------- ##
 980 ## Updating files.  ##
 981 ## ---------------- ##
 982
 983 ftp-gnu = ftp://ftp.gnu.org/gnu
 984 www-gnu = http://www.gnu.org
 985
 986 upload_dest_dir_ ?= $(PACKAGE)
 987 emit_upload_commands:
 988         @echo =====================================
 989         @echo =====================================
 990         @echo "$(build_aux)/gnupload $(GNUPLOADFLAGS) \\"
 991         @echo "    --to $(gnu_rel_host):$(upload_dest_dir_) \\"
 992         @echo "  $(rel-files)"
 993         @echo '# send the ~/announce-$(my_distdir) e-mail'
 994         @echo =====================================
 995         @echo =====================================
 996
 997 noteworthy = * Noteworthy changes in release ?.? (????-??-??) [?]
 998 define emit-commit-log
 999   printf '%s\n' 'post-release administrivia' '' \
1000     '* NEWS: Add header line for next release.' \
1001     '* .prev-version: Record previous version.' \
1002     '* cfg.mk (old_NEWS_hash): Auto-update.'
1003 endef
1004
1005 .PHONY: no-submodule-changes
1006 no-submodule-changes:
1007         if test -d $(srcdir)/.git; then                                 \
1008           diff=$$(cd $(srcdir) && git submodule -q foreach              \
1009                   git diff-index --name-only HEAD)                      \
1010             || exit 1;                                                  \
1011           case $$diff in '') ;;                                         \
1012             *) echo '$(ME): submodule files are locally modified:';     \
1013                 echo "$$diff"; exit 1;; esac;                           \
1014         else                                                            \
1015           : ;                                                           \
1016         fi
1017
1018 .PHONY: alpha beta stable
1019 ALL_RECURSIVE_TARGETS += alpha beta stable
1020 alpha beta stable: $(local-check) writable-files no-submodule-changes
1021         test $@ = stable                                                \
1022           && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$'         \
1023                || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
1024           || :
1025         $(MAKE) vc-diff-check
1026         $(MAKE) news-check
1027         $(MAKE) distcheck
1028         $(MAKE) dist XZ_OPT=-9ev
1029         $(MAKE) $(release-prep-hook) RELEASE_TYPE=$@
1030         $(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
1031
1032 # Override this in cfg.mk if you follow different procedures.
1033 release-prep-hook ?= release-prep
1034
1035 .PHONY: release-prep
1036 release-prep:
1037         case $$RELEASE_TYPE in alpha|beta|stable) ;; \
1038           *) echo "invalid RELEASE_TYPE: $$RELEASE_TYPE" 1>&2; exit 1;; esac
1039         $(MAKE) -s announcement > ~/announce-$(my_distdir)
1040         if test -d $(release_archive_dir); then                 \
1041           ln $(rel-files) $(release_archive_dir);               \
1042           chmod a-w $(rel-files);                               \
1043         fi
1044         echo $(VERSION) > $(prev_version_file)
1045         $(MAKE) update-NEWS-hash
1046         perl -pi -e '$$. == 3 and print "$(noteworthy)\n\n\n"' NEWS
1047         $(emit-commit-log) > .ci-msg
1048         $(VC) commit -F .ci-msg -a
1049         rm .ci-msg
1050
1051 .PHONY: web-manual
1052 web-manual:
1053         @test -z "$(manual_title)" \
1054           && { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
1055         @cd '$(srcdir)/doc'; \
1056           $(SHELL) ../build-aux/gendocs.sh -o '$(abs_builddir)/doc/manual' \
1057              --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
1058             "$(PACKAGE_NAME) - $(manual_title)"
1059         @echo " *** Upload the doc/manual directory to web-cvs."
1060
1061 # Code Coverage
1062
1063 init-coverage:
1064         $(MAKE) $(AM_MAKEFLAGS) clean
1065         lcov --directory . --zerocounters
1066
1067 COVERAGE_CCOPTS ?= "-g --coverage"
1068 COVERAGE_OUT ?= doc/coverage
1069
1070 build-coverage:
1071         $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS)
1072         $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS) check
1073         mkdir -p $(COVERAGE_OUT)
1074         lcov --directory . --output-file $(COVERAGE_OUT)/$(PACKAGE).info \
1075                 --capture
1076
1077 gen-coverage:
1078         genhtml --output-directory $(COVERAGE_OUT) \
1079                 $(COVERAGE_OUT)/$(PACKAGE).info \
1080                 --highlight --frames --legend \
1081                 --title "$(PACKAGE_NAME)"
1082
1083 coverage: init-coverage build-coverage gen-coverage
1084
1085 # Update gettext files.
1086 PACKAGE ?= $(shell basename $(PWD))
1087 PO_DOMAIN ?= $(PACKAGE)
1088 POURL = http://translationproject.org/latest/$(PO_DOMAIN)/
1089 PODIR ?= po
1090 refresh-po:
1091         rm -f $(PODIR)/*.po && \
1092         echo "$(ME): getting translations into po (please ignore the robots.txt ERROR 404)..." && \
1093         wget --no-verbose --directory-prefix $(PODIR) --no-directories --recursive --level 1 --accept .po --accept .po.1 $(POURL) && \
1094         echo 'en@boldquot' > $(PODIR)/LINGUAS && \
1095         echo 'en@quot' >> $(PODIR)/LINGUAS && \
1096         ls $(PODIR)/*.po | sed 's/\.po//' | sed 's,$(PODIR)/,,' | sort >> $(PODIR)/LINGUAS
1097
1098 INDENT_SOURCES ?= $(C_SOURCES)
1099 .PHONY: indent
1100 indent:
1101         indent $(INDENT_SOURCES)
1102
1103 # If you want to set UPDATE_COPYRIGHT_* environment variables,
1104 # put the assignments in this variable.
1105 update-copyright-env ?=
1106
1107 # Run this rule once per year (usually early in January)
1108 # to update all FSF copyright year lists in your project.
1109 # If you have an additional project-specific rule,
1110 # add it in cfg.mk along with a line 'update-copyright: prereq'.
1111 # By default, exclude all variants of COPYING; you can also
1112 # add exemptions (such as ChangeLog..* for rotated change logs)
1113 # in the file .x-update-copyright.
1114 .PHONY: update-copyright
1115 update-copyright:
1116         grep -l -w Copyright                                             \
1117           $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
1118           | $(update-copyright-env) xargs $(build_aux)/$@