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) 2001-2012 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 # Diagnostic for continued use of deprecated variable.
  25 # Remove in 2013
  26 ifneq ($(build_aux),)
  27  $(error "$(ME): \
  28 set $$(_build-aux) relative to $$(srcdir) instead of $$(build_aux)")
  29 endif
  30
  31 # Do not save the original name or timestamp in the .tar.gz file.
  32 # Use --rsyncable if available.
  33 gzip_rsyncable := \
  34   $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null \
  35     && printf %s --rsyncable)
  36 GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
  37
  38 GIT = git
  39 VC = $(GIT)
  40
  41 VC_LIST = $(srcdir)/$(_build-aux)/vc-list-files -C $(srcdir)
  42
  43 # You can override this variable in cfg.mk to set your own regexp
  44 # matching files to ignore.
  45 VC_LIST_ALWAYS_EXCLUDE_REGEX ?= ^$$
  46
  47 # This is to preprocess robustly the output of $(VC_LIST), so that even
  48 # when $(srcdir) is a pathological name like "....", the leading sed command
  49 # removes only the intended prefix.
  50 _dot_escaped_srcdir = $(subst .,\.,$(srcdir))
  51
  52 # Post-process $(VC_LIST) output, prepending $(srcdir)/, but only
  53 # when $(srcdir) is not ".".
  54 ifeq ($(srcdir),.)
  55 _prepend_srcdir_prefix =
  56 else
  57 _prepend_srcdir_prefix = | sed 's|^|$(srcdir)/|'
  58 endif
  59
  60 # In order to be able to consistently filter "."-relative names,
  61 # (i.e., with no $(srcdir) prefix), this definition is careful to
  62 # remove any $(srcdir) prefix, and to restore what it removes.
  63 _sc_excl = \
  64   $(if $(exclude_file_name_regexp--$@),$(exclude_file_name_regexp--$@),^$$)
  65 VC_LIST_EXCEPT = \
  66   $(VC_LIST) | sed 's|^$(_dot_escaped_srcdir)/||' \
  67         | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
  68           else grep -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
  69         | grep -Ev -e '($(VC_LIST_ALWAYS_EXCLUDE_REGEX)|$(_sc_excl))' \
  70         $(_prepend_srcdir_prefix)
  71
  72 ifeq ($(origin prev_version_file), undefined)
  73   prev_version_file = $(srcdir)/.prev-version
  74 endif
  75
  76 PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
  77 VERSION_REGEXP = $(subst .,\.,$(VERSION))
  78 PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
  79
  80 ifeq ($(VC),$(GIT))
  81 this-vc-tag = v$(VERSION)
  82 this-vc-tag-regexp = v$(VERSION_REGEXP)
  83 else
  84 tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
  85 tag-this-version = $(subst .,_,$(VERSION))
  86 this-vc-tag = $(tag-package)-$(tag-this-version)
  87 this-vc-tag-regexp = $(this-vc-tag)
  88 endif
  89 my_distdir = $(PACKAGE)-$(VERSION)
  90
  91 # Old releases are stored here.
  92 release_archive_dir ?= ../release
  93
  94 # Override gnu_rel_host and url_dir_list in cfg.mk if these are not right.
  95 # Use alpha.gnu.org for alpha and beta releases.
  96 # Use ftp.gnu.org for stable releases.
  97 gnu_ftp_host-alpha = alpha.gnu.org
  98 gnu_ftp_host-beta = alpha.gnu.org
  99 gnu_ftp_host-stable = ftp.gnu.org
 100 gnu_rel_host ?= $(gnu_ftp_host-$(RELEASE_TYPE))
 101
 102 ifeq ($(gnu_rel_host),ftp.gnu.org)
 103 url_dir_list ?= http://ftpmirror.gnu.org/$(PACKAGE)
 104 else
 105 url_dir_list ?= ftp://$(gnu_rel_host)/gnu/$(PACKAGE)
 106 endif
 107
 108 # Override this in cfg.mk if you are using a different format in your
 109 # NEWS file.
 110 today = $(shell date +%Y-%m-%d)
 111
 112 # Select which lines of NEWS are searched for $(news-check-regexp).
 113 # This is a sed line number spec.  The default says that we search
 114 # lines 1..10 of NEWS for $(news-check-regexp).
 115 # If you want to search only line 3 or only lines 20-22, use "3" or "20,22".
 116 news-check-lines-spec ?= 1,10
 117 news-check-regexp ?= '^\*.* $(VERSION_REGEXP) \($(today)\)'
 118
 119 # Prevent programs like 'sort' from considering distinct strings to be equal.
 120 # Doing it here saves us from having to set LC_ALL elsewhere in this file.
 121 export LC_ALL = C
 122
 123 ## --------------- ##
 124 ## Sanity checks.  ##
 125 ## --------------- ##
 126
 127 _cfg_mk := $(shell test -f $(srcdir)/cfg.mk && echo '$(srcdir)/cfg.mk')
 128
 129 # Collect the names of rules starting with 'sc_'.
 130 syntax-check-rules := $(sort $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' \
 131                         $(srcdir)/$(ME) $(_cfg_mk)))
 132 .PHONY: $(syntax-check-rules)
 133
 134 ifeq ($(shell $(VC_LIST) >/dev/null 2>&1; echo $$?),0)
 135 local-checks-available += $(syntax-check-rules)
 136 else
 137 local-checks-available += no-vc-detected
 138 no-vc-detected:
 139         @echo "No version control files detected; skipping syntax check"
 140 endif
 141 .PHONY: $(local-checks-available)
 142
 143 # Arrange to print the name of each syntax-checking rule just before running it.
 144 $(syntax-check-rules): %: %.m
 145 sc_m_rules_ = $(patsubst %, %.m, $(syntax-check-rules))
 146 .PHONY: $(sc_m_rules_)
 147 $(sc_m_rules_):
 148         @echo $(patsubst sc_%.m, %, $@)
 149         @date +%s.%N > .sc-start-$(basename $@)
 150
 151 # Compute and print the elapsed time for each syntax-check rule.
 152 sc_z_rules_ = $(patsubst %, %.z, $(syntax-check-rules))
 153 .PHONY: $(sc_z_rules_)
 154 $(sc_z_rules_): %.z: %
 155         @end=$$(date +%s.%N);                                           \
 156         start=$$(cat .sc-start-$*);                                     \
 157         rm -f .sc-start-$*;                                             \
 158         awk -v s=$$start -v e=$$end                                     \
 159           'END {printf "%.2f $(patsubst sc_%,%,$*)\n", e - s}' < /dev/null
 160
 161 # The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
 162 # that computes and prints elapsed time.
 163 local-check :=                                                          \
 164   $(patsubst sc_%, sc_%.z,                                              \
 165     $(filter-out $(local-checks-to-skip), $(local-checks-available)))
 166
 167 syntax-check: $(local-check)
 168
 169 # _sc_search_regexp
 170 #
 171 # This macro searches for a given construct in the selected files and
 172 # then takes some action.
 173 #
 174 # Parameters (shell variables):
 175 #
 176 #  prohibit | require
 177 #
 178 #     Regular expression (ERE) denoting either a forbidden construct
 179 #     or a required construct.  Those arguments are exclusive.
 180 #
 181 #  exclude
 182 #
 183 #     Regular expression (ERE) denoting lines to ignore that matched
 184 #     a prohibit construct.  For example, this can be used to exclude
 185 #     comments that mention why the nearby code uses an alternative
 186 #     construct instead of the simpler prohibited construct.
 187 #
 188 #  in_vc_files | in_files
 189 #
 190 #     grep-E-style regexp denoting the files to check.  If no files
 191 #     are specified the default are all the files that are under
 192 #     version control.
 193 #
 194 #  containing | non_containing
 195 #
 196 #     Select the files (non) containing strings matching this regexp.
 197 #     If both arguments are specified then CONTAINING takes
 198 #     precedence.
 199 #
 200 #  with_grep_options
 201 #
 202 #     Extra options for grep.
 203 #
 204 #  ignore_case
 205 #
 206 #     Ignore case.
 207 #
 208 #  halt
 209 #
 210 #     Message to display before to halting execution.
 211 #
 212 # Finally, you may exempt files based on an ERE matching file names.
 213 # For example, to exempt from the sc_space_tab check all files with the
 214 # .diff suffix, set this Make variable:
 215 #
 216 # exclude_file_name_regexp--sc_space_tab = \.diff$
 217 #
 218 # Note that while this functionality is mostly inherited via VC_LIST_EXCEPT,
 219 # when filtering by name via in_files, we explicitly filter out matching
 220 # names here as well.
 221
 222 # Initialize each, so that envvar settings cannot interfere.
 223 export require =
 224 export prohibit =
 225 export exclude =
 226 export in_vc_files =
 227 export in_files =
 228 export containing =
 229 export non_containing =
 230 export halt =
 231 export with_grep_options =
 232
 233 # By default, _sc_search_regexp does not ignore case.
 234 export ignore_case =
 235 _ignore_case = $$(test -n "$$ignore_case" && printf %s -i || :)
 236
 237 define _sc_say_and_exit
 238    dummy=; : so we do not need a semicolon before each use;             \
 239    { printf '%s\n' "$(ME): $$msg" 1>&2; exit 1; };
 240 endef
 241
 242 define _sc_search_regexp
 243    dummy=; : so we do not need a semicolon before each use;             \
 244                                                                         \
 245    : Check arguments;                                                   \
 246    test -n "$$prohibit" && test -n "$$require"                          \
 247      && { msg='Cannot specify both prohibit and require'                \
 248           $(_sc_say_and_exit) } || :;                                   \
 249    test -z "$$prohibit" && test -z "$$require"                          \
 250      && { msg='Should specify either prohibit or require'               \
 251           $(_sc_say_and_exit) } || :;                                   \
 252    test -z "$$prohibit" && test -n "$$exclude"                          \
 253      && { msg='Use of exclude requires a prohibit pattern'              \
 254           $(_sc_say_and_exit) } || :;                                   \
 255    test -n "$$in_vc_files" && test -n "$$in_files"                      \
 256      && { msg='Cannot specify both in_vc_files and in_files'            \
 257           $(_sc_say_and_exit) } || :;                                   \
 258    test "x$$halt" != x                                                  \
 259      || { msg='halt not defined' $(_sc_say_and_exit) };                 \
 260                                                                         \
 261    : Filter by file name;                                               \
 262    if test -n "$$in_files"; then                                        \
 263      files=$$(find $(srcdir) | grep -E "$$in_files"                     \
 264               | grep -Ev '$(exclude_file_name_regexp--$@)');            \
 265    else                                                                 \
 266      files=$$($(VC_LIST_EXCEPT));                                       \
 267      if test -n "$$in_vc_files"; then                                   \
 268        files=$$(echo "$$files" | grep -E "$$in_vc_files");              \
 269      fi;                                                                \
 270    fi;                                                                  \
 271                                                                         \
 272    : Filter by content;                                                 \
 273    test -n "$$files" && test -n "$$containing"                          \
 274      && { files=$$(grep -l "$$containing" $$files); } || :;             \
 275    test -n "$$files" && test -n "$$non_containing"                      \
 276      && { files=$$(grep -vl "$$non_containing" $$files); } || :;        \
 277                                                                         \
 278    : Check for the construct;                                           \
 279    if test -n "$$files"; then                                           \
 280      if test -n "$$prohibit"; then                                      \
 281        grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
 282          | grep -vE "$${exclude:-^$$}"                                  \
 283          && { msg="$$halt" $(_sc_say_and_exit) } || :;                  \
 284      else                                                               \
 285        grep $$with_grep_options $(_ignore_case) -LE "$$require" $$files \
 286            | grep .                                                     \
 287          && { msg="$$halt" $(_sc_say_and_exit) } || :;                  \
 288      fi                                                                 \
 289    else :;                                                              \
 290    fi || :;
 291 endef
 292
 293 sc_avoid_if_before_free:
 294         @$(srcdir)/$(_build-aux)/useless-if-before-free                 \
 295                 $(useless_free_options)                                 \
 296             $$($(VC_LIST_EXCEPT) | grep -v useless-if-before-free) &&   \
 297           { echo '$(ME): found useless "if" before "free" above' 1>&2;  \
 298             exit 1; } || :
 299
 300 sc_cast_of_argument_to_free:
 301         @prohibit='\<free *\( *\(' halt="don't cast free argument"      \
 302           $(_sc_search_regexp)
 303
 304 sc_cast_of_x_alloc_return_value:
 305         @prohibit='\*\) *x(m|c|re)alloc\>'                              \
 306         halt="don't cast x*alloc return value"                          \
 307           $(_sc_search_regexp)
 308
 309 sc_cast_of_alloca_return_value:
 310         @prohibit='\*\) *alloca\>'                                      \
 311         halt="don't cast alloca return value"                           \
 312           $(_sc_search_regexp)
 313
 314 sc_space_tab:
 315         @prohibit='[ ]  '                                               \
 316         halt='found SPACE-TAB sequence; remove the SPACE'               \
 317           $(_sc_search_regexp)
 318
 319 # Don't use *scanf or the old ato* functions in "real" code.
 320 # They provide no error checking mechanism.
 321 # Instead, use strto* functions.
 322 sc_prohibit_atoi_atof:
 323         @prohibit='\<([fs]?scanf|ato([filq]|ll)) *\('                           \
 324         halt='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q'   \
 325           $(_sc_search_regexp)
 326
 327 # Use STREQ rather than comparing strcmp == 0, or != 0.
 328 sp_ = strcmp *\(.+\)
 329 sc_prohibit_strcmp:
 330         @prohibit='! *strcmp *\(|\<$(sp_) *[!=]=|[!=]= *$(sp_)'         \
 331         exclude=':# *define STRN?EQ\('                                  \
 332         halt='$(ME): replace strcmp calls above with STREQ/STRNEQ'      \
 333           $(_sc_search_regexp)
 334
 335 # Really.  You don't want to use this function.
 336 # It may fail to NUL-terminate the destination,
 337 # and always NUL-pads out to the specified length.
 338 sc_prohibit_strncpy:
 339         @prohibit='\<strncpy *\('                                       \
 340         halt='do not use strncpy, period'                               \
 341           $(_sc_search_regexp)
 342
 343 # Pass EXIT_*, not number, to usage, exit, and error (when exiting)
 344 # Convert all uses automatically, via these two commands:
 345 # git grep -l '\<exit *(1)' \
 346 #  | grep -vEf .x-sc_prohibit_magic_number_exit \
 347 #  | xargs --no-run-if-empty \
 348 #      perl -pi -e 's/(^|[^.])\b(exit ?)\(1\)/$1$2(EXIT_FAILURE)/'
 349 # git grep -l '\<exit *(0)' \
 350 #  | grep -vEf .x-sc_prohibit_magic_number_exit \
 351 #  | xargs --no-run-if-empty \
 352 #      perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
 353 sc_prohibit_magic_number_exit:
 354         @prohibit='(^|[^.])\<(usage|exit) ?\([0-9]|\<error ?\([1-9][0-9]*,'     \
 355         halt='use EXIT_* values rather than magic number'                       \
 356           $(_sc_search_regexp)
 357
 358 # Using EXIT_SUCCESS as the first argument to error is misleading,
 359 # since when that parameter is 0, error does not exit.  Use '0' instead.
 360 sc_error_exit_success:
 361         @prohibit='error *\(EXIT_SUCCESS,'                              \
 362         in_vc_files='\.[chly]$$'                                        \
 363         halt='found error (EXIT_SUCCESS'                                \
 364          $(_sc_search_regexp)
 365
 366 # "FATAL:" should be fully upper-cased in error messages
 367 # "WARNING:" should be fully upper-cased, or fully lower-cased
 368 sc_error_message_warn_fatal:
 369         @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))              \
 370             | grep -E '"Warning|"Fatal|"fatal' &&                       \
 371           { echo '$(ME): use FATAL, WARNING or warning' 1>&2;           \
 372             exit 1; } || :
 373
 374 # Error messages should not start with a capital letter
 375 sc_error_message_uppercase:
 376         @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))              \
 377             | grep -E '"[A-Z]'                                          \
 378             | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' &&           \
 379           { echo '$(ME): found capitalized error message' 1>&2;         \
 380             exit 1; } || :
 381
 382 # Error messages should not end with a period
 383 sc_error_message_period:
 384         @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT))              \
 385             | grep -E '[^."]\."' &&                                     \
 386           { echo '$(ME): found error message ending in period' 1>&2;    \
 387             exit 1; } || :
 388
 389 sc_file_system:
 390         @prohibit=file''system                                          \
 391         ignore_case=1                                                   \
 392         halt='found use of "file''system"; spell it "file system"'      \
 393           $(_sc_search_regexp)
 394
 395 # Don't use cpp tests of this symbol.  All code assumes config.h is included.
 396 sc_prohibit_have_config_h:
 397         @prohibit='^# *if.*HAVE''_CONFIG_H'                             \
 398         halt='found use of HAVE''_CONFIG_H; remove'                     \
 399           $(_sc_search_regexp)
 400
 401 # Nearly all .c files must include <config.h>.  However, we also permit this
 402 # via inclusion of a package-specific header, if cfg.mk specified one.
 403 # config_h_header must be suitable for grep -E.
 404 config_h_header ?= <config\.h>
 405 sc_require_config_h:
 406         @require='^# *include $(config_h_header)'                       \
 407         in_vc_files='\.c$$'                                             \
 408         halt='the above files do not include <config.h>'                \
 409           $(_sc_search_regexp)
 410
 411 # You must include <config.h> before including any other header file.
 412 # This can possibly be via a package-specific header, if given by cfg.mk.
 413 sc_require_config_h_first:
 414         @if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then       \
 415           fail=0;                                                       \
 416           for i in $$($(VC_LIST_EXCEPT) | grep '\.c$$'); do             \
 417             grep '^# *include\>' $$i | sed 1q                           \
 418                 | grep -E '^# *include $(config_h_header)' > /dev/null  \
 419               || { echo $$i; fail=1; };                                 \
 420           done;                                                         \
 421           test $$fail = 1 &&                                            \
 422             { echo '$(ME): the above files include some other header'   \
 423                 'before <config.h>' 1>&2; exit 1; } || :;               \
 424         else :;                                                         \
 425         fi
 426
 427 sc_prohibit_HAVE_MBRTOWC:
 428         @prohibit='\bHAVE_MBRTOWC\b'                                    \
 429         halt="do not use $$prohibit; it is always defined"              \
 430           $(_sc_search_regexp)
 431
 432 # To use this "command" macro, you must first define two shell variables:
 433 # h: the header name, with no enclosing <> or ""
 434 # re: a regular expression that matches IFF something provided by $h is used.
 435 define _sc_header_without_use
 436   dummy=; : so we do not need a semicolon before each use;              \
 437   h_esc=`echo '[<"]'"$$h"'[">]'|sed 's/\./\\\\./g'`;                    \
 438   if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then              \
 439     files=$$(grep -l '^# *include '"$$h_esc"                            \
 440              $$($(VC_LIST_EXCEPT) | grep '\.c$$')) &&                   \
 441     grep -LE "$$re" $$files | grep . &&                                 \
 442       { echo "$(ME): the above files include $$h but don't use it"      \
 443         1>&2; exit 1; } || :;                                           \
 444   else :;                                                               \
 445   fi
 446 endef
 447
 448 # Prohibit the inclusion of assert.h without an actual use of assert.
 449 sc_prohibit_assert_without_use:
 450         @h='assert.h' re='\<assert *\(' $(_sc_header_without_use)
 451
 452 # Prohibit the inclusion of close-stream.h without an actual use.
 453 sc_prohibit_close_stream_without_use:
 454         @h='close-stream.h' re='\<close_stream *\(' $(_sc_header_without_use)
 455
 456 # Prohibit the inclusion of getopt.h without an actual use.
 457 sc_prohibit_getopt_without_use:
 458         @h='getopt.h' re='\<getopt(_long)? *\(' $(_sc_header_without_use)
 459
 460 # Don't include quotearg.h unless you use one of its functions.
 461 sc_prohibit_quotearg_without_use:
 462         @h='quotearg.h' re='\<quotearg(_[^ ]+)? *\(' $(_sc_header_without_use)
 463
 464 # Don't include quote.h unless you use one of its functions.
 465 sc_prohibit_quote_without_use:
 466         @h='quote.h' re='\<quote((_n)? *\(|_quoting_options\>)' \
 467           $(_sc_header_without_use)
 468
 469 # Don't include this header unless you use one of its functions.
 470 sc_prohibit_long_options_without_use:
 471         @h='long-options.h' re='\<parse_long_options *\(' \
 472           $(_sc_header_without_use)
 473
 474 # Don't include this header unless you use one of its functions.
 475 sc_prohibit_inttostr_without_use:
 476         @h='inttostr.h' re='\<(off|[iu]max|uint)tostr *\(' \
 477           $(_sc_header_without_use)
 478
 479 # Don't include this header unless you use one of its functions.
 480 sc_prohibit_ignore_value_without_use:
 481         @h='ignore-value.h' re='\<ignore_(value|ptr) *\(' \
 482           $(_sc_header_without_use)
 483
 484 # Don't include this header unless you use one of its functions.
 485 sc_prohibit_error_without_use:
 486         @h='error.h' \
 487         re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
 488           $(_sc_header_without_use)
 489
 490 # Don't include xalloc.h unless you use one of its functions.
 491 # Consider these symbols:
 492 # perl -lne '/^# *define (\w+)\(/ and print $1' lib/xalloc.h|grep -v '^__';
 493 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/xalloc.h
 494 # Divide into two sets on case, and filter each through this:
 495 # | sort | perl -MRegexp::Assemble -le \
 496 #  'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
 497 # Note this was produced by the above:
 498 # _xa1 = \
 499 #x(((2n?)?re|c(har)?|n(re|m)|z)alloc|alloc_(oversized|die)|m(alloc|emdup)|strdup)
 500 # But we can do better, in at least two ways:
 501 # 1) take advantage of two "dup"-suffixed strings:
 502 # x(((2n?)?re|c(har)?|n(re|m)|[mz])alloc|alloc_(oversized|die)|(mem|str)dup)
 503 # 2) notice that "c(har)?|[mz]" is equivalent to the shorter and more readable
 504 # "char|[cmz]"
 505 # x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
 506 _xa1 = x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
 507 _xa2 = X([CZ]|N?M)ALLOC
 508 sc_prohibit_xalloc_without_use:
 509         @h='xalloc.h' \
 510         re='\<($(_xa1)|$(_xa2)) *\('\
 511           $(_sc_header_without_use)
 512
 513 # Extract function names:
 514 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/hash.h
 515 _hash_re = \
 516 clear|delete|free|get_(first|next)|insert|lookup|print_statistics|reset_tuning
 517 _hash_fn = \<($(_hash_re)) *\(
 518 _hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
 519 sc_prohibit_hash_without_use:
 520         @h='hash.h' \
 521         re='$(_hash_fn)|$(_hash_struct)'\
 522           $(_sc_header_without_use)
 523
 524 sc_prohibit_cloexec_without_use:
 525         @h='cloexec.h' re='\<(set_cloexec_flag|dup_cloexec) *\(' \
 526           $(_sc_header_without_use)
 527
 528 sc_prohibit_posixver_without_use:
 529         @h='posixver.h' re='\<posix2_version *\(' $(_sc_header_without_use)
 530
 531 sc_prohibit_same_without_use:
 532         @h='same.h' re='\<same_name *\(' $(_sc_header_without_use)
 533
 534 sc_prohibit_hash_pjw_without_use:
 535         @h='hash-pjw.h' \
 536         re='\<hash_pjw\>' \
 537           $(_sc_header_without_use)
 538
 539 sc_prohibit_safe_read_without_use:
 540         @h='safe-read.h' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
 541           $(_sc_header_without_use)
 542
 543 sc_prohibit_argmatch_without_use:
 544         @h='argmatch.h' \
 545         re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<(invalid_arg|argmatch(_exit_fn|_(in)?valid)?) *\()' \
 546           $(_sc_header_without_use)
 547
 548 sc_prohibit_canonicalize_without_use:
 549         @h='canonicalize.h' \
 550         re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode|file_name)' \
 551           $(_sc_header_without_use)
 552
 553 sc_prohibit_root_dev_ino_without_use:
 554         @h='root-dev-ino.h' \
 555         re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
 556           $(_sc_header_without_use)
 557
 558 sc_prohibit_openat_without_use:
 559         @h='openat.h' \
 560         re='\<(openat_(permissive|needs_fchdir|(save|restore)_fail)|l?(stat|ch(own|mod))at|(euid)?accessat)\>' \
 561           $(_sc_header_without_use)
 562
 563 # Prohibit the inclusion of c-ctype.h without an actual use.
 564 ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
 565 |isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
 566 sc_prohibit_c_ctype_without_use:
 567         @h='c-ctype.h' re='\<c_($(ctype_re)) *\(' \
 568           $(_sc_header_without_use)
 569
 570 _empty =
 571 _sp = $(_empty) $(_empty)
 572 # The following list was generated by running:
 573 # man signal.h|col -b|perl -ne '/bsd_signal.*;/.../sigwaitinfo.*;/ and print' \
 574 #   | perl -lne '/^\s+(?:int|void).*?(\w+).*/ and print $1' | fmt
 575 _sig_functions = \
 576   bsd_signal kill killpg pthread_kill pthread_sigmask raise sigaction \
 577   sigaddset sigaltstack sigdelset sigemptyset sigfillset sighold sigignore \
 578   siginterrupt sigismember signal sigpause sigpending sigprocmask sigqueue \
 579   sigrelse sigset sigsuspend sigtimedwait sigwait sigwaitinfo
 580 _sig_function_re = $(subst $(_sp),|,$(strip $(_sig_functions)))
 581 # The following were extracted from "man signal.h" manually.
 582 _sig_types_and_consts =                                                 \
 583   MINSIGSTKSZ SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK           \
 584   SA_RESETHAND SA_RESTART SA_SIGINFO SIGEV_NONE SIGEV_SIGNAL            \
 585   SIGEV_THREAD SIGSTKSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SS_DISABLE    \
 586   SS_ONSTACK mcontext_t pid_t sig_atomic_t sigevent siginfo_t sigset_t  \
 587   sigstack sigval stack_t ucontext_t
 588 # generated via this:
 589 # perl -lne '/^#ifdef (SIG\w+)/ and print $1' lib/sig2str.c|sort -u|fmt -70
 590 _sig_names =                                                            \
 591   SIGABRT SIGALRM SIGALRM1 SIGBUS SIGCANCEL SIGCHLD SIGCLD SIGCONT      \
 592   SIGDANGER SIGDIL SIGEMT SIGFPE SIGFREEZE SIGGRANT SIGHUP SIGILL       \
 593   SIGINFO SIGINT SIGIO SIGIOT SIGKAP SIGKILL SIGKILLTHR SIGLOST SIGLWP  \
 594   SIGMIGRATE SIGMSG SIGPHONE SIGPIPE SIGPOLL SIGPRE SIGPROF SIGPWR      \
 595   SIGQUIT SIGRETRACT SIGSAK SIGSEGV SIGSOUND SIGSTKFLT SIGSTOP SIGSYS   \
 596   SIGTERM SIGTHAW SIGTRAP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGUSR1        \
 597   SIGUSR2 SIGVIRT SIGVTALRM SIGWAITING SIGWINCH SIGWIND SIGWINDOW       \
 598   SIGXCPU SIGXFSZ
 599 _sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
 600
 601 # Prohibit the inclusion of signal.h without an actual use.
 602 sc_prohibit_signal_without_use:
 603         @h='signal.h'                                                   \
 604         re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'          \
 605           $(_sc_header_without_use)
 606
 607 # Don't include stdio--.h unless you use one of its functions.
 608 sc_prohibit_stdio--_without_use:
 609         @h='stdio--.h' re='\<((f(re)?|p)open|tmpfile) *\('              \
 610           $(_sc_header_without_use)
 611
 612 # Don't include stdio-safer.h unless you use one of its functions.
 613 sc_prohibit_stdio-safer_without_use:
 614         @h='stdio-safer.h' re='\<((f(re)?|p)open|tmpfile)_safer *\('    \
 615           $(_sc_header_without_use)
 616
 617 # Prohibit the inclusion of strings.h without a sensible use.
 618 # Using the likes of bcmp, bcopy, bzero, index or rindex is not sensible.
 619 sc_prohibit_strings_without_use:
 620         @h='strings.h'                                                  \
 621         re='\<(strn?casecmp|ffs(ll)?)\>'                                \
 622           $(_sc_header_without_use)
 623
 624 # Get the list of symbol names with this:
 625 # perl -lne '/^# *define ([A-Z]\w+)\(/ and print $1' lib/intprops.h|fmt
 626 _intprops_names =                                                       \
 627   TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT             \
 628   TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM           \
 629   INT_BITS_STRLEN_BOUND INT_STRLEN_BOUND INT_BUFSIZE_BOUND              \
 630   INT_ADD_RANGE_OVERFLOW INT_SUBTRACT_RANGE_OVERFLOW                    \
 631   INT_NEGATE_RANGE_OVERFLOW INT_MULTIPLY_RANGE_OVERFLOW                 \
 632   INT_DIVIDE_RANGE_OVERFLOW INT_REMAINDER_RANGE_OVERFLOW                \
 633   INT_LEFT_SHIFT_RANGE_OVERFLOW INT_ADD_OVERFLOW INT_SUBTRACT_OVERFLOW  \
 634   INT_NEGATE_OVERFLOW INT_MULTIPLY_OVERFLOW INT_DIVIDE_OVERFLOW         \
 635   INT_REMAINDER_OVERFLOW INT_LEFT_SHIFT_OVERFLOW
 636 _intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
 637 # Prohibit the inclusion of intprops.h without an actual use.
 638 sc_prohibit_intprops_without_use:
 639         @h='intprops.h'                                                 \
 640         re='\<($(_intprops_syms_re)) *\('                               \
 641           $(_sc_header_without_use)
 642
 643 _stddef_syms_re = NULL|offsetof|ptrdiff_t|size_t|wchar_t
 644 # Prohibit the inclusion of stddef.h without an actual use.
 645 sc_prohibit_stddef_without_use:
 646         @h='stddef.h'                                                   \
 647         re='\<($(_stddef_syms_re))\>'                                   \
 648           $(_sc_header_without_use)
 649
 650 _de1 = dirfd|(close|(fd)?open|read|rewind|seek|tell)dir(64)?(_r)?
 651 _de2 = (versionsort|struct dirent|getdirentries|alphasort|scandir(at)?)(64)?
 652 _de3 = MAXNAMLEN|DIR|ino_t|d_ino|d_fileno|d_namlen
 653 _dirent_syms_re = $(_de1)|$(_de2)|$(_de3)
 654 # Prohibit the inclusion of dirent.h without an actual use.
 655 sc_prohibit_dirent_without_use:
 656         @h='dirent.h'                                                   \
 657         re='\<($(_dirent_syms_re))\>'                                   \
 658           $(_sc_header_without_use)
 659
 660 # Prohibit the inclusion of verify.h without an actual use.
 661 sc_prohibit_verify_without_use:
 662         @h='verify.h'                                                   \
 663         re='\<(verify(true|expr)?|static_assert) *\('                   \
 664           $(_sc_header_without_use)
 665
 666 # Don't include xfreopen.h unless you use one of its functions.
 667 sc_prohibit_xfreopen_without_use:
 668         @h='xfreopen.h' re='\<xfreopen *\(' $(_sc_header_without_use)
 669
 670 sc_obsolete_symbols:
 671         @prohibit='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'                     \
 672         halt='do not use HAVE''_FCNTL_H or O'_NDELAY                    \
 673           $(_sc_search_regexp)
 674
 675 # FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
 676
 677 # Each nonempty ChangeLog line must start with a year number, or a TAB.
 678 sc_changelog:
 679         @prohibit='^[^12        ]'                                      \
 680         in_vc_files='^ChangeLog$$'                                      \
 681         halt='found unexpected prefix in a ChangeLog'                   \
 682           $(_sc_search_regexp)
 683
 684 # Ensure that each .c file containing a "main" function also
 685 # calls set_program_name.
 686 sc_program_name:
 687         @require='set_program_name *\(m?argv\[0\]\);'                   \
 688         in_vc_files='\.c$$'                                             \
 689         containing='\<main *('                                          \
 690         halt='the above files do not call set_program_name'             \
 691           $(_sc_search_regexp)
 692
 693 # Ensure that each .c file containing a "main" function also
 694 # calls bindtextdomain.
 695 sc_bindtextdomain:
 696         @require='bindtextdomain *\('                                   \
 697         in_vc_files='\.c$$'                                             \
 698         containing='\<main *('                                          \
 699         halt='the above files do not call bindtextdomain'               \
 700           $(_sc_search_regexp)
 701
 702 # Require that the final line of each test-lib.sh-using test be this one:
 703 # Exit $fail
 704 # Note: this test requires GNU grep's --label= option.
 705 Exit_witness_file ?= tests/test-lib.sh
 706 Exit_base := $(notdir $(Exit_witness_file))
 707 sc_require_test_exit_idiom:
 708         @if test -f $(srcdir)/$(Exit_witness_file); then                \
 709           die=0;                                                        \
 710           for i in $$(grep -l -F 'srcdir/$(Exit_base)'                  \
 711                 $$($(VC_LIST) tests)); do                               \
 712             tail -n1 $$i | grep '^Exit .' > /dev/null                   \
 713               && : || { die=1; echo $$i; }                              \
 714           done;                                                         \
 715           test $$die = 1 &&                                             \
 716             { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
 717               echo 1>&2 'Exit something';                               \
 718               exit 1; } || :;                                           \
 719         fi
 720
 721 sc_trailing_blank:
 722         @prohibit='[     ]$$'                                           \
 723         halt='found trailing blank(s)'                                  \
 724           $(_sc_search_regexp)
 725
 726 # Match lines like the following, but where there is only one space
 727 # between the options and the description:
 728 #   -D, --all-repeated[=delimit-method]  print all duplicate lines\n
 729 longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
 730 sc_two_space_separator_in_usage:
 731         @prohibit='^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'         \
 732         halt='help2man requires at least two spaces between an option and its description'\
 733           $(_sc_search_regexp)
 734
 735 # A regexp matching function names like "error" that may be used
 736 # to emit translatable messages.
 737 _gl_translatable_diag_func_re ?= error
 738
 739 # Look for diagnostics that aren't marked for translation.
 740 # This won't find any for which error's format string is on a separate line.
 741 sc_unmarked_diagnostics:
 742         @prohibit='\<$(_gl_translatable_diag_func_re) *\([^"]*"[^"]*[a-z]{3}' \
 743         exclude='(_|ngettext ?)\('                                      \
 744         halt='$(ME): found unmarked diagnostic(s)'                      \
 745           $(_sc_search_regexp)
 746
 747 # Avoid useless parentheses like those in this example:
 748 # #if defined (SYMBOL) || defined (SYM2)
 749 sc_useless_cpp_parens:
 750         @prohibit='^# *if .*defined *\('                                \
 751         halt='found useless parentheses in cpp directive'               \
 752           $(_sc_search_regexp)
 753
 754 # List headers for which HAVE_HEADER_H is always true, assuming you are
 755 # using the appropriate gnulib module.  CAUTION: for each "unnecessary"
 756 # #if HAVE_HEADER_H that you remove, be sure that your project explicitly
 757 # requires the gnulib module that guarantees the usability of that header.
 758 gl_assured_headers_ = \
 759   cd $(gnulib_dir)/lib && echo *.in.h|sed 's/\.in\.h//g'
 760
 761 # Convert the list of names to upper case, and replace each space with "|".
 762 az_ = abcdefghijklmnopqrstuvwxyz
 763 AZ_ = ABCDEFGHIJKLMNOPQRSTUVWXYZ
 764 gl_header_upper_case_or_ =                                              \
 765   $$($(gl_assured_headers_)                                             \
 766     | tr $(az_)/.- $(AZ_)___                                            \
 767     | tr -s ' ' '|'                                                     \
 768     )
 769 sc_prohibit_always_true_header_tests:
 770         @or=$(gl_header_upper_case_or_);                                \
 771         re="HAVE_($$or)_H";                                             \
 772         prohibit='\<'"$$re"'\>'                                         \
 773         halt=$$(printf '%s\n'                                           \
 774         'do not test the above HAVE_<header>_H symbol(s);'              \
 775         '  with the corresponding gnulib module, they are always true') \
 776           $(_sc_search_regexp)
 777
 778 # ==================================================================
 779 gl_other_headers_ ?= \
 780   intprops.h    \
 781   openat.h      \
 782   stat-macros.h
 783
 784 # Perl -lne code to extract "significant" cpp-defined symbols from a
 785 # gnulib header file, eliminating a few common false-positives.
 786 # The exempted names below are defined only conditionally in gnulib,
 787 # and hence sometimes must/may be defined in application code.
 788 gl_extract_significant_defines_ = \
 789   /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/\
 790     && $$2 !~ /(?:rpl_|_used_without_)/\
 791     && $$1 !~ /^(?:NSIG|ENODATA)$$/\
 792     && $$1 !~ /^(?:SA_RESETHAND|SA_RESTART)$$/\
 793     and print $$1
 794
 795 # Create a list of regular expressions matching the names
 796 # of macros that are guaranteed to be defined by parts of gnulib.
 797 define def_sym_regex
 798         gen_h=$(gl_generated_headers_);                                 \
 799         (cd $(gnulib_dir)/lib;                                          \
 800           for f in *.in.h $(gl_other_headers_); do                      \
 801             test -f $$f                                                 \
 802               && perl -lne '$(gl_extract_significant_defines_)' $$f;    \
 803           done;                                                         \
 804         ) | sort -u                                                     \
 805           | sed 's/^/^ *# *(define|undef)  */;s/$$/\\>/'
 806 endef
 807
 808 # Don't define macros that we already get from gnulib header files.
 809 sc_prohibit_always-defined_macros:
 810         @if test -d $(gnulib_dir); then                                 \
 811           case $$(echo all: | grep -l -f - Makefile) in Makefile);; *)  \
 812             echo '$(ME): skipping $@: you lack GNU grep' 1>&2; exit 0;; \
 813           esac;                                                         \
 814           $(def_sym_regex) | grep -E -f - $$($(VC_LIST_EXCEPT))         \
 815             && { echo '$(ME): define the above via some gnulib .h file' \
 816                   1>&2;  exit 1; } || :;                                \
 817         fi
 818 # ==================================================================
 819
 820 # Prohibit checked in backup files.
 821 sc_prohibit_backup_files:
 822         @$(VC_LIST) | grep '~$$' &&                             \
 823           { echo '$(ME): found version controlled backup file' 1>&2;    \
 824             exit 1; } || :
 825
 826 # Require the latest GPL.
 827 sc_GPL_version:
 828         @prohibit='either ''version [^3]'                               \
 829         halt='GPL vN, N!=3'                                             \
 830           $(_sc_search_regexp)
 831
 832 # Require the latest GFDL.  Two regexp, since some .texi files end up
 833 # line wrapping between 'Free Documentation License,' and 'Version'.
 834 _GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
 835 sc_GFDL_version:
 836         @prohibit='$(_GFDL_regexp)'                                     \
 837         halt='GFDL vN, N!=3'                                            \
 838           $(_sc_search_regexp)
 839
 840 # Don't use Texinfo's @acronym{}.
 841 # http://lists.gnu.org/archive/html/bug-gnulib/2010-03/msg00321.html
 842 texinfo_suffix_re_ ?= \.(txi|texi(nfo)?)$$
 843 sc_texinfo_acronym:
 844         @prohibit='@acronym\{'                                          \
 845         in_vc_files='$(texinfo_suffix_re_)'                             \
 846         halt='found use of Texinfo @acronym{}'                          \
 847           $(_sc_search_regexp)
 848
 849 cvs_keywords = \
 850   Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State
 851
 852 sc_prohibit_cvs_keyword:
 853         @prohibit='\$$($(cvs_keywords))\$$'                             \
 854         halt='do not use CVS keyword expansion'                         \
 855           $(_sc_search_regexp)
 856
 857 # This Perl code is slightly obfuscated.  Not only is each "$" doubled
 858 # because it's in a Makefile, but the $$c's are comments;  we cannot
 859 # use "#" due to the way the script ends up concatenated onto one line.
 860 # It would be much more concise, and would produce better output (including
 861 # counts) if written as:
 862 #   perl -ln -0777 -e '/\n(\n+)$/ and print "$ARGV: ".length $1' ...
 863 # but that would be far less efficient, reading the entire contents
 864 # of each file, rather than just the last two bytes of each.
 865 # In addition, while the code below detects both blank lines and a missing
 866 # newline at EOF, the above detects only the former.
 867 #
 868 # This is a perl script that is expected to be the single-quoted argument
 869 # to a command-line "-le".  The remaining arguments are file names.
 870 # Print the name of each file that does not end in exactly one newline byte.
 871 # I.e., warn if there are blank lines (2 or more newlines), or if the
 872 # last byte is not a newline.  However, currently we don't complain
 873 # about any file that contains exactly one byte.
 874 # Exit nonzero if at least one such file is found, otherwise, exit 0.
 875 # Warn about, but otherwise ignore open failure.  Ignore seek/read failure.
 876 #
 877 # Use this if you want to remove trailing empty lines from selected files:
 878 #   perl -pi -0777 -e 's/\n\n+$/\n/' files...
 879 #
 880 require_exactly_one_NL_at_EOF_ =                                        \
 881   foreach my $$f (@ARGV)                                                \
 882     {                                                                   \
 883       open F, "<", $$f or (warn "failed to open $$f: $$!\n"), next;     \
 884       my $$p = sysseek (F, -2, 2);                                      \
 885       my $$c = "seek failure probably means file has < 2 bytes; ignore"; \
 886       my $$last_two_bytes;                                              \
 887       defined $$p and $$p = sysread F, $$last_two_bytes, 2;             \
 888       close F;                                                          \
 889       $$c = "ignore read failure";                                      \
 890       $$p && ($$last_two_bytes eq "\n\n"                                \
 891               || substr ($$last_two_bytes,1) ne "\n")                   \
 892           and (print $$f), $$fail=1;                                    \
 893     }                                                                   \
 894   END { exit defined $$fail }
 895 sc_prohibit_empty_lines_at_EOF:
 896         @perl -le '$(require_exactly_one_NL_at_EOF_)' $$($(VC_LIST_EXCEPT)) \
 897           || { echo '$(ME): empty line(s) or no newline at EOF'         \
 898                 1>&2; exit 1; } || :
 899
 900 # Make sure we don't use st_blocks.  Use ST_NBLOCKS instead.
 901 # This is a bit of a kludge, since it prevents use of the string
 902 # even in comments, but for now it does the job with no false positives.
 903 sc_prohibit_stat_st_blocks:
 904         @prohibit='[.>]st_blocks'                                       \
 905         halt='do not use st_blocks; use ST_NBLOCKS'                     \
 906           $(_sc_search_regexp)
 907
 908 # Make sure we don't define any S_IS* macros in src/*.c files.
 909 # They're already defined via gnulib's sys/stat.h replacement.
 910 sc_prohibit_S_IS_definition:
 911         @prohibit='^ *# *define  *S_IS'                                 \
 912         halt='do not define S_IS* macros; include <sys/stat.h>'         \
 913           $(_sc_search_regexp)
 914
 915 # Perl block to convert a match to FILE_NAME:LINENO:TEST,
 916 # that is shared by two definitions below.
 917 perl_filename_lineno_text_ =                                            \
 918     -e '  {'                                                            \
 919     -e '    $$n = ($$` =~ tr/\n/\n/ + 1);'                              \
 920     -e '    ($$v = $$&) =~ s/\n/\\n/g;'                                 \
 921     -e '    print "$$ARGV:$$n:$$v\n";'                                  \
 922     -e '  }'
 923
 924 prohibit_doubled_word_RE_ ?= \
 925   /\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b/gims
 926 prohibit_doubled_word_ =                                                \
 927     -e 'while ($(prohibit_doubled_word_RE_))'                           \
 928     $(perl_filename_lineno_text_)
 929
 930 # Define this to a regular expression that matches
 931 # any filename:dd:match lines you want to ignore.
 932 # The default is to ignore no matches.
 933 ignore_doubled_word_match_RE_ ?= ^$$
 934
 935 sc_prohibit_doubled_word:
 936         @perl -n -0777 $(prohibit_doubled_word_) $$($(VC_LIST_EXCEPT))  \
 937           | grep -vE '$(ignore_doubled_word_match_RE_)'                 \
 938           | grep . && { echo '$(ME): doubled words' 1>&2; exit 1; } || :
 939
 940 # A regular expression matching undesirable combinations of words like
 941 # "can not"; this matches them even when the two words appear on different
 942 # lines, but not when there is an intervening delimiter like "#" or "*".
 943 # Similarly undesirable, "See @xref{...}", since an @xref should start
 944 # a sentence.  Explicitly prohibit any prefix of "see" or "also".
 945 # Also prohibit a prefix matching "\w+ +".
 946 # @pxref gets the same see/also treatment and should be parenthesized;
 947 # presume it must *not* start a sentence.
 948 bad_xref_re_ ?= (?:[\w,:;] +|(?:see|also)\s+)\@xref\{
 949 bad_pxref_re_ ?= (?:[.!?]|(?:see|also))\s+\@pxref\{
 950 prohibit_undesirable_word_seq_RE_ ?=                                    \
 951   /(?:\bcan\s+not\b|$(bad_xref_re_)|$(bad_pxref_re_))/gims
 952 prohibit_undesirable_word_seq_ =                                        \
 953     -e 'while ($(prohibit_undesirable_word_seq_RE_))'                   \
 954     $(perl_filename_lineno_text_)
 955 # Define this to a regular expression that matches
 956 # any filename:dd:match lines you want to ignore.
 957 # The default is to ignore no matches.
 958 ignore_undesirable_word_sequence_RE_ ?= ^$$
 959
 960 sc_prohibit_undesirable_word_seq:
 961         @perl -n -0777 $(prohibit_undesirable_word_seq_)                \
 962              $$($(VC_LIST_EXCEPT))                                      \
 963           | grep -vE '$(ignore_undesirable_word_sequence_RE_)' | grep . \
 964           && { echo '$(ME): undesirable word sequence' >&2; exit 1; } || :
 965
 966 _ptm1 = use "test C1 && test C2", not "test C1 -''a C2"
 967 _ptm2 = use "test C1 || test C2", not "test C1 -''o C2"
 968 # Using test's -a and -o operators is not portable.
 969 # We prefer test over [, since the latter is spelled [[ in configure.ac.
 970 sc_prohibit_test_minus_ao:
 971         @prohibit='(\<test| \[+) .+ -[ao] '                             \
 972         halt='$(_ptm1); $(_ptm2)'                                       \
 973           $(_sc_search_regexp)
 974
 975 # Avoid a test bashism.
 976 sc_prohibit_test_double_equal:
 977         @prohibit='(\<test| \[+) .+ == '                                \
 978         containing='#! */bin/[a-z]*sh'                                  \
 979         halt='use "test x = x", not "test x =''= x"'                    \
 980           $(_sc_search_regexp)
 981
 982 # Each program that uses proper_name_utf8 must link with one of the
 983 # ICONV libraries.  Otherwise, some ICONV library must appear in LDADD.
 984 # The perl -0777 invocation below extracts the possibly-multi-line
 985 # definition of LDADD from the appropriate Makefile.am and exits 0
 986 # when it contains "ICONV".
 987 sc_proper_name_utf8_requires_ICONV:
 988         @progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
 989         if test "x$$progs" != x; then                                   \
 990           fail=0;                                                       \
 991           for p in $$progs; do                                          \
 992             dir=$$(dirname "$$p");                                      \
 993             perl -0777                                                  \
 994               -ne 'exit !(/^LDADD =(.+?[^\\]\n)/ms && $$1 =~ /ICONV/)'  \
 995               $$dir/Makefile.am && continue;                            \
 996             base=$$(basename "$$p" .c);                                 \
 997             grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null \
 998               || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
 999           done;                                                         \
1000           test $$fail = 1 &&                                            \
1001             { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
1002               exit 1; } || :;                                           \
1003         fi
1004
1005 # Warn about "c0nst struct Foo const foo[]",
1006 # but not about "char const *const foo" or "#define const const".
1007 sc_redundant_const:
1008         @prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'          \
1009         halt='redundant "const" in declarations'                        \
1010           $(_sc_search_regexp)
1011
1012 sc_const_long_option:
1013         @prohibit='^ *static.*struct option '                           \
1014         exclude='const struct option|struct option const'               \
1015         halt='$(ME): add "const" to the above declarations'             \
1016           $(_sc_search_regexp)
1017
1018 NEWS_hash =                                                             \
1019   $$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p'              \
1020        $(srcdir)/NEWS                                                   \
1021      | perl -0777 -pe                                                   \
1022         's/^Copyright.+?Free\sSoftware\sFoundation,\sInc\.\n//ms'       \
1023      | md5sum -                                                         \
1024      | sed 's/ .*//')
1025
1026 # Ensure that we don't accidentally insert an entry into an old NEWS block.
1027 sc_immutable_NEWS:
1028         @if test -f $(srcdir)/NEWS; then                                \
1029           test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : ||              \
1030             { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; }; \
1031         fi
1032
1033 # Update the hash stored above.  Do this after each release and
1034 # for any corrections to old entries.
1035 update-NEWS-hash: NEWS
1036         perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
1037           $(srcdir)/cfg.mk
1038
1039 # Ensure that we use only the standard $(VAR) notation,
1040 # not @...@ in Makefile.am, now that we can rely on automake
1041 # to emit a definition for each substituted variable.
1042 # However, there is still one case in which @VAR@ use is not just
1043 # legitimate, but actually required: when augmenting an automake-defined
1044 # variable with a prefix.  For example, gettext uses this:
1045 # MAKEINFO = env LANG= LC_MESSAGES= LC_ALL= LANGUAGE= @MAKEINFO@
1046 # otherwise, makeinfo would put German or French (current locale)
1047 # navigation hints in the otherwise-English documentation.
1048 #
1049 # Allow the package to add exceptions via a hook in cfg.mk;
1050 # for example, @PRAGMA_SYSTEM_HEADER@ can be permitted by
1051 # setting this to ' && !/PRAGMA_SYSTEM_HEADER/'.
1052 _makefile_at_at_check_exceptions ?=
1053 sc_makefile_at_at_check:
1054         @perl -ne '/\@\w+\@/'                                           \
1055           -e ' && !/(\w+)\s+=.*\@\1\@$$/'                               \
1056           -e ''$(_makefile_at_at_check_exceptions)                      \
1057           -e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}'    \
1058             $$($(VC_LIST_EXCEPT) | grep -E '(^|/)(Makefile\.am|[^/]+\.mk)$$') \
1059           && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
1060
1061 news-check: NEWS
1062         if sed -n $(news-check-lines-spec)p $(srcdir)/NEWS              \
1063             | grep -E $(news-check-regexp) >/dev/null; then             \
1064           :;                                                            \
1065         else                                                            \
1066           echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2;      \
1067           exit 1;                                                       \
1068         fi
1069
1070 sc_makefile_TAB_only_indentation:
1071         @prohibit='^    [ ]{8}'                                         \
1072         in_vc_files='akefile|\.mk$$'                                    \
1073         halt='found TAB-8-space indentation'                            \
1074           $(_sc_search_regexp)
1075
1076 sc_m4_quote_check:
1077         @prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]'              \
1078         in_vc_files='(^configure\.ac|\.m4)$$'                           \
1079         halt='quote the first arg to AC_DEF*'                           \
1080           $(_sc_search_regexp)
1081
1082 fix_po_file_diag = \
1083 'you have changed the set of files with translatable diagnostics;\n\
1084 apply the above patch\n'
1085
1086 # Verify that all source files using _() are listed in po/POTFILES.in.
1087 po_file ?= $(srcdir)/po/POTFILES.in
1088 generated_files ?= $(srcdir)/lib/*.[ch]
1089 sc_po_check:
1090         @if test -f $(po_file); then                                    \
1091           grep -E -v '^(#|$$)' $(po_file)                               \
1092             | grep -v '^src/false\.c$$' | sort > $@-1;                  \
1093           files=;                                                       \
1094           for file in $$($(VC_LIST_EXCEPT)) $(generated_files); do      \
1095             test -r $$file || continue;                                 \
1096             case $$file in                                              \
1097               *.m4|*.mk) continue ;;                                    \
1098               *.?|*.??) ;;                                              \
1099               *) continue;;                                             \
1100             esac;                                                       \
1101             case $$file in                                              \
1102             *.[ch])                                                     \
1103               base=`expr " $$file" : ' \(.*\)\..'`;                     \
1104               { test -f $$base.l || test -f $$base.y; } && continue;;   \
1105             esac;                                                       \
1106             files="$$files $$file";                                     \
1107           done;                                                         \
1108           grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files          \
1109             | sed 's|^$(_dot_escaped_srcdir)/||' | sort -u > $@-2;      \
1110           diff -u -L $(po_file) -L $(po_file) $@-1 $@-2                 \
1111             || { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; };   \
1112           rm -f $@-1 $@-2;                                              \
1113         fi
1114
1115 # Sometimes it is useful to change the PATH environment variable
1116 # in Makefiles.  When doing so, it's better not to use the Unix-centric
1117 # path separator of ':', but rather the automake-provided '$(PATH_SEPARATOR)'.
1118 msg = '$(ME): Do not use ":" above; use $$(PATH_SEPARATOR) instead'
1119 sc_makefile_path_separator_check:
1120         @prohibit='PATH[=].*:'                                          \
1121         in_vc_files='akefile|\.mk$$'                                    \
1122         halt=$(msg)                                                     \
1123           $(_sc_search_regexp)
1124
1125 # Check that 'make alpha' will not fail at the end of the process,
1126 # i.e., when pkg-M.N.tar.xz already exists (either in "." or in ../release)
1127 # and is read-only.
1128 writable-files:
1129         if test -d $(release_archive_dir); then                         \
1130           for file in $(DIST_ARCHIVES); do                              \
1131             for p in ./ $(release_archive_dir)/; do                     \
1132               test -e $$p$$file || continue;                            \
1133               test -w $$p$$file                                         \
1134                 || { echo ERROR: $$p$$file is not writable; fail=1; };  \
1135             done;                                                       \
1136           done;                                                         \
1137           test "$$fail" && exit 1 || : ;                                \
1138         else :;                                                         \
1139         fi
1140
1141 v_etc_file = $(gnulib_dir)/lib/version-etc.c
1142 sample-test = tests/sample-test
1143 texi = doc/$(PACKAGE).texi
1144 # Make sure that the copyright date in $(v_etc_file) is up to date.
1145 # Do the same for the $(sample-test) and the main doc/.texi file.
1146 sc_copyright_check:
1147         @require='enum { COPYRIGHT_YEAR = '$$(date +%Y)' };'            \
1148         in_files=$(v_etc_file)                                          \
1149         halt='out of date copyright in $(v_etc_file); update it'        \
1150           $(_sc_search_regexp)
1151         @require='# Copyright \(C\) '$$(date +%Y)' Free'                \
1152         in_vc_files=$(sample-test)                                      \
1153         halt='out of date copyright in $(sample-test); update it'       \
1154           $(_sc_search_regexp)
1155         @require='Copyright @copyright\{\} .*'$$(date +%Y)' Free'       \
1156         in_vc_files=$(texi)                                             \
1157         halt='out of date copyright in $(texi); update it'              \
1158           $(_sc_search_regexp)
1159
1160 # If tests/help-version exists and seems to be new enough, assume that its
1161 # use of init.sh and path_prepend_ is correct, and ensure that every other
1162 # use of init.sh is identical.
1163 # This is useful because help-version cross-checks prog --version
1164 # with $(VERSION), which verifies that its path_prepend_ invocation
1165 # sets PATH correctly.  This is an inexpensive way to ensure that
1166 # the other init.sh-using tests also get it right.
1167 _hv_file ?= $(srcdir)/tests/help-version
1168 _hv_regex_weak ?= ^ *\. .*/init\.sh"
1169 # Fix syntax-highlighters "
1170 _hv_regex_strong ?= ^ *\. "\$${srcdir=\.}/init\.sh"
1171 sc_cross_check_PATH_usage_in_tests:
1172         @if test -f $(_hv_file); then                                   \
1173           grep -l 'VERSION mismatch' $(_hv_file) >/dev/null             \
1174             || { echo "$@: skipped: no such file: $(_hv_file)" 1>&2;    \
1175                  exit 0; };                                             \
1176           grep -lE '$(_hv_regex_strong)' $(_hv_file) >/dev/null         \
1177             || { echo "$@: $(_hv_file) lacks conforming use of init.sh" 1>&2; \
1178                  exit 1; };                                             \
1179           good=$$(grep -E '$(_hv_regex_strong)' $(_hv_file));           \
1180           grep -LFx "$$good"                                            \
1181                 $$(grep -lE '$(_hv_regex_weak)' $$($(VC_LIST_EXCEPT)))  \
1182               | grep . &&                                               \
1183             { echo "$(ME): the above files use path_prepend_ inconsistently" \
1184                 1>&2; exit 1; } || :;                                   \
1185         fi
1186
1187 # BRE regex of file contents to identify a test script.
1188 _test_script_regex ?= \<init\.sh\>
1189
1190 # In tests, use "compare expected actual", not the reverse.
1191 sc_prohibit_reversed_compare_failure:
1192         @prohibit='\<compare [^ ]+ ([^ ]*exp|/dev/null)'                \
1193         containing='$(_test_script_regex)'                              \
1194         halt='reversed compare arguments'                               \
1195           $(_sc_search_regexp)
1196
1197 # #if HAVE_... will evaluate to false for any non numeric string.
1198 # That would be flagged by using -Wundef, however gnulib currently
1199 # tests many undefined macros, and so we can't enable that option.
1200 # So at least preclude common boolean strings as macro values.
1201 sc_Wundef_boolean:
1202         @prohibit='^#define.*(yes|no|true|false)$$'                     \
1203         in_files='$(CONFIG_INCLUDE)'                                    \
1204         halt='Use 0 or 1 for macro values'                              \
1205           $(_sc_search_regexp)
1206
1207 # Even if you use pathmax.h to guarantee that PATH_MAX is defined, it might
1208 # not be constant, or might overflow a stack.  In general, use PATH_MAX as
1209 # a limit, not an array or alloca size.
1210 sc_prohibit_path_max_allocation:
1211         @prohibit='(\balloca *\([^)]*|\[[^]]*)PATH_MAX'                 \
1212         halt='Avoid stack allocations of size PATH_MAX'                 \
1213           $(_sc_search_regexp)
1214
1215 sc_vulnerable_makefile_CVE-2009-4029:
1216         @prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
1217         in_files=$$(find $(srcdir) -name Makefile.in)                   \
1218         halt=$$(printf '%s\n'                                           \
1219           'the above files are vulnerable; beware of running'           \
1220           '  "make dist*" rules, and upgrade to fixed automake'         \
1221           '  see http://bugzilla.redhat.com/542609 for details')        \
1222           $(_sc_search_regexp)
1223
1224 vc-diff-check:
1225         (unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
1226         if test -s vc-diffs; then                               \
1227           cat vc-diffs;                                         \
1228           echo "Some files are locally modified:" 1>&2;         \
1229           exit 1;                                               \
1230         else                                                    \
1231           rm vc-diffs;                                          \
1232         fi
1233
1234 rel-files = $(DIST_ARCHIVES)
1235
1236 gnulib_dir ?= $(srcdir)/gnulib
1237 gnulib-version = $$(cd $(gnulib_dir) && git describe)
1238 bootstrap-tools ?= autoconf,automake,gnulib
1239
1240 # If it's not already specified, derive the GPG key ID from
1241 # the signed tag we've just applied to mark this release.
1242 gpg_key_ID ?= \
1243   $$(git cat-file tag v$(VERSION) \
1244      | gpgv --status-fd 1 --keyring /dev/null - - 2>/dev/null \
1245      | awk '/^\[GNUPG:\] ERRSIG / {print $3; exit}')
1246
1247 translation_project_ ?= coordinator@translationproject.org
1248
1249 # Make info-gnu the default only for a stable release.
1250 ifeq ($(RELEASE_TYPE),stable)
1251   announcement_Cc_ ?= $(translation_project_), $(PACKAGE_BUGREPORT)
1252   announcement_mail_headers_ ?=                                         \
1253     To: info-gnu@gnu.org                                                \
1254     Cc: $(announcement_Cc_)                                             \
1255     Mail-Followup-To: $(PACKAGE_BUGREPORT)
1256 else
1257   announcement_Cc_ ?= $(translation_project_)
1258   announcement_mail_headers_ ?=                                         \
1259     To: $(PACKAGE_BUGREPORT)                                            \
1260     Cc: $(announcement_Cc_)
1261 endif
1262
1263 announcement: NEWS ChangeLog $(rel-files)
1264         @$(srcdir)/$(_build-aux)/announce-gen                           \
1265             --mail-headers='$(announcement_mail_headers_)'              \
1266             --release-type=$(RELEASE_TYPE)                              \
1267             --package=$(PACKAGE)                                        \
1268             --prev=$(PREV_VERSION)                                      \
1269             --curr=$(VERSION)                                           \
1270             --gpg-key-id=$(gpg_key_ID)                                  \
1271             --news=$(srcdir)/NEWS                                       \
1272             --bootstrap-tools=$(bootstrap-tools)                        \
1273             $$(case ,$(bootstrap-tools), in (*,gnulib,*)                \
1274                echo --gnulib-version=$(gnulib-version);; esac)          \
1275             --no-print-checksums                                        \
1276             $(addprefix --url-dir=, $(url_dir_list))
1277
1278 ## ---------------- ##
1279 ## Updating files.  ##
1280 ## ---------------- ##
1281
1282 ftp-gnu = ftp://ftp.gnu.org/gnu
1283 www-gnu = http://www.gnu.org
1284
1285 upload_dest_dir_ ?= $(PACKAGE)
1286 emit_upload_commands:
1287         @echo =====================================
1288         @echo =====================================
1289         @echo "$(srcdir)/$(_build-aux)/gnupload $(GNUPLOADFLAGS) \\"
1290         @echo "    --to $(gnu_rel_host):$(upload_dest_dir_) \\"
1291         @echo "  $(rel-files)"
1292         @echo '# send the ~/announce-$(my_distdir) e-mail'
1293         @echo =====================================
1294         @echo =====================================
1295
1296 define emit-commit-log
1297   printf '%s\n' 'maint: post-release administrivia' ''                  \
1298     '* NEWS: Add header line for next release.'                         \
1299     '* .prev-version: Record previous version.'                         \
1300     '* cfg.mk (old_NEWS_hash): Auto-update.'
1301 endef
1302
1303 .PHONY: no-submodule-changes
1304 no-submodule-changes:
1305         if test -d $(srcdir)/.git; then                                 \
1306           diff=$$(cd $(srcdir) && git submodule -q foreach              \
1307                   git diff-index --name-only HEAD)                      \
1308             || exit 1;                                                  \
1309           case $$diff in '') ;;                                         \
1310             *) echo '$(ME): submodule files are locally modified:';     \
1311                 echo "$$diff"; exit 1;; esac;                           \
1312         else                                                            \
1313           : ;                                                           \
1314         fi
1315
1316 submodule-checks ?= no-submodule-changes public-submodule-commit
1317
1318 # Ensure that each sub-module commit we're using is public.
1319 # Without this, it is too easy to tag and release code that
1320 # cannot be built from a fresh clone.
1321 .PHONY: public-submodule-commit
1322 public-submodule-commit:
1323         $(AM_V_GEN)if test -d $(srcdir)/.git; then                      \
1324           cd $(srcdir) &&                                               \
1325           git submodule --quiet foreach test '$$(git rev-parse $$sha1)' \
1326               = '$$(git merge-base origin $$sha1)'                      \
1327             || { echo '$(ME): found non-public submodule commit' >&2;   \
1328                  exit 1; };                                             \
1329         else                                                            \
1330           : ;                                                           \
1331         fi
1332 # This rule has a high enough utility/cost ratio that it should be a
1333 # dependent of "check" by default.  However, some of us do occasionally
1334 # commit a temporary change that deliberately points to a non-public
1335 # submodule commit, and want to be able to use rules like "make check".
1336 # In that case, run e.g., "make check gl_public_submodule_commit="
1337 # to disable this test.
1338 gl_public_submodule_commit ?= public-submodule-commit
1339 check: $(gl_public_submodule_commit)
1340
1341 .PHONY: alpha beta stable
1342 ALL_RECURSIVE_TARGETS += alpha beta stable
1343 alpha beta stable: $(local-check) writable-files $(submodule-checks)
1344         test $@ = stable                                                \
1345           && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$'         \
1346                || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
1347           || :
1348         $(MAKE) vc-diff-check
1349         $(MAKE) news-check
1350         $(MAKE) distcheck
1351         $(MAKE) dist
1352         $(MAKE) $(release-prep-hook) RELEASE_TYPE=$@
1353         $(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
1354
1355 # Override this in cfg.mk if you follow different procedures.
1356 release-prep-hook ?= release-prep
1357
1358 gl_noteworthy_news_ = * Noteworthy changes in release ?.? (????-??-??) [?]
1359 .PHONY: release-prep
1360 release-prep:
1361         case $$RELEASE_TYPE in alpha|beta|stable) ;; \
1362           *) echo "invalid RELEASE_TYPE: $$RELEASE_TYPE" 1>&2; exit 1;; esac
1363         $(MAKE) --no-print-directory -s announcement > ~/announce-$(my_distdir)
1364         if test -d $(release_archive_dir); then                 \
1365           ln $(rel-files) $(release_archive_dir);               \
1366           chmod a-w $(rel-files);                               \
1367         fi
1368         echo $(VERSION) > $(prev_version_file)
1369         $(MAKE) update-NEWS-hash
1370         perl -pi -e '$$. == 3 and print "$(gl_noteworthy_news_)\n\n\n"' NEWS
1371         $(emit-commit-log) > .ci-msg
1372         $(VC) commit -F .ci-msg -a
1373         rm .ci-msg
1374
1375 # Override this with e.g., -s $(srcdir)/some_other_name.texi
1376 # if the default $(PACKAGE)-derived name doesn't apply.
1377 gendocs_options_ ?=
1378
1379 .PHONY: web-manual
1380 web-manual:
1381         @test -z "$(manual_title)" \
1382           && { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
1383         @cd '$(srcdir)/doc'; \
1384           $(SHELL) ../$(_build-aux)/gendocs.sh $(gendocs_options_) \
1385              -o '$(abs_builddir)/doc/manual' \
1386              --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
1387             "$(PACKAGE_NAME) - $(manual_title)"
1388         @echo " *** Upload the doc/manual directory to web-cvs."
1389
1390 # Code Coverage
1391
1392 init-coverage:
1393         $(MAKE) $(AM_MAKEFLAGS) clean
1394         lcov --directory . --zerocounters
1395
1396 COVERAGE_CCOPTS ?= "-g --coverage"
1397 COVERAGE_OUT ?= doc/coverage
1398
1399 build-coverage:
1400         $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS)
1401         $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS) check
1402         mkdir -p $(COVERAGE_OUT)
1403         lcov --directory . --output-file $(COVERAGE_OUT)/$(PACKAGE).info \
1404                 --capture
1405
1406 gen-coverage:
1407         genhtml --output-directory $(COVERAGE_OUT) \
1408                 $(COVERAGE_OUT)/$(PACKAGE).info \
1409                 --highlight --frames --legend \
1410                 --title "$(PACKAGE_NAME)"
1411
1412 coverage: init-coverage build-coverage gen-coverage
1413
1414 # Update gettext files.
1415 PACKAGE ?= $(shell basename $(PWD))
1416 PO_DOMAIN ?= $(PACKAGE)
1417 POURL = http://translationproject.org/latest/$(PO_DOMAIN)/
1418 PODIR ?= po
1419 refresh-po:
1420         rm -f $(PODIR)/*.po && \
1421         echo "$(ME): getting translations into po (please ignore the robots.txt ERROR 404)..." && \
1422         wget --no-verbose --directory-prefix $(PODIR) --no-directories --recursive --level 1 --accept .po --accept .po.1 $(POURL) && \
1423         echo 'en@boldquot' > $(PODIR)/LINGUAS && \
1424         echo 'en@quot' >> $(PODIR)/LINGUAS && \
1425         ls $(PODIR)/*.po | sed 's/\.po//;s,$(PODIR)/,,' | sort >> $(PODIR)/LINGUAS
1426
1427  # Running indent once is not idempotent, but running it twice is.
1428 INDENT_SOURCES ?= $(C_SOURCES)
1429 .PHONY: indent
1430 indent:
1431         indent $(INDENT_SOURCES)
1432         indent $(INDENT_SOURCES)
1433
1434 # If you want to set UPDATE_COPYRIGHT_* environment variables,
1435 # put the assignments in this variable.
1436 update-copyright-env ?=
1437
1438 # Run this rule once per year (usually early in January)
1439 # to update all FSF copyright year lists in your project.
1440 # If you have an additional project-specific rule,
1441 # add it in cfg.mk along with a line 'update-copyright: prereq'.
1442 # By default, exclude all variants of COPYING; you can also
1443 # add exemptions (such as ChangeLog..* for rotated change logs)
1444 # in the file .x-update-copyright.
1445 .PHONY: update-copyright
1446 update-copyright:
1447         grep -l -w Copyright                                             \
1448           $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
1449           | $(update-copyright-env) xargs $(srcdir)/$(_build-aux)/$@
1450
1451 # This tight_scope test is skipped with a warning if $(_gl_TS_headers) is not
1452 # overridden and $(_gl_TS_dir)/Makefile.am does not mention noinst_HEADERS.
1453
1454 # NOTE: to override any _gl_TS_* default value, you must
1455 # define the variable(s) using "export" in cfg.mk.
1456 _gl_TS_dir ?= src
1457
1458 ALL_RECURSIVE_TARGETS += sc_tight_scope
1459 sc_tight_scope: tight-scope.mk
1460         @fail=0;                                                        \
1461         if ! grep '^ *export _gl_TS_headers *=' $(srcdir)/cfg.mk        \
1462                 > /dev/null                                             \
1463            && ! grep -w noinst_HEADERS $(srcdir)/$(_gl_TS_dir)/Makefile.am \
1464                 > /dev/null 2>&1; then                                  \
1465             echo '$(ME): skipping $@';                                  \
1466         else                                                            \
1467             $(MAKE) -s -C $(_gl_TS_dir)                                 \
1468                 -f Makefile                                             \
1469                 -f $(abs_top_srcdir)/cfg.mk                             \
1470                 -f $(abs_top_builddir)/$<                               \
1471               _gl_tight_scope                                           \
1472                 || fail=1;                                              \
1473         fi;                                                             \
1474         rm -f $<;                                                       \
1475         exit $$fail
1476
1477 tight-scope.mk: $(ME)
1478         @rm -f $@ $@-t
1479         @perl -ne '/^# TS-start/.../^# TS-end/ and print' $(srcdir)/$(ME) > $@-t
1480         @chmod a=r $@-t && mv $@-t $@
1481
1482 ifeq (a,b)
1483 # TS-start
1484
1485 # Most functions should have static scope.
1486 # Any that don't must be marked with 'extern', but 'main'
1487 # and 'usage' are exceptions: they're always extern, but
1488 # do not need to be marked.  Symbols matching '__.*' are
1489 # reserved by the compiler, so are automatically excluded below.
1490 _gl_TS_unmarked_extern_functions ?= main usage
1491 _gl_TS_function_match ?= /^(?:$(_gl_TS_extern)) +.*?(\S+) *\(/
1492
1493 # If your project uses a macro like "XTERN", then put
1494 # the following in cfg.mk to override this default:
1495 # export _gl_TS_extern = extern|XTERN
1496 _gl_TS_extern ?= extern
1497
1498 # The second nm|grep checks for file-scope variables with 'extern' scope.
1499 # Without gnulib's progname module, you might put program_name here.
1500 # Symbols matching '__.*' are reserved by the compiler,
1501 # so are automatically excluded below.
1502 _gl_TS_unmarked_extern_vars ?=
1503
1504 # NOTE: the _match variables are perl expressions -- not mere regular
1505 # expressions -- so that you can extend them to match other patterns
1506 # and easily extract matched variable names.
1507 # For example, if your project declares some global variables via
1508 # a macro like this: GLOBAL(type, var_name, initializer), then you
1509 # can override this definition to automatically extract those names:
1510 # export _gl_TS_var_match = \
1511 #   /^(?:$(_gl_TS_extern)) .*?\**(\w+)(\[.*?\])?;/ || /\bGLOBAL\(.*?,\s*(.*?),/
1512 _gl_TS_var_match ?= /^(?:$(_gl_TS_extern)) .*?(\w+)(\[.*?\])?;/
1513
1514 # The names of object files in (or relative to) $(_gl_TS_dir).
1515 _gl_TS_obj_files ?= *.$(OBJEXT)
1516
1517 # Files in which to search for the one-line style extern declarations.
1518 # $(_gl_TS_dir)-relative.
1519 _gl_TS_headers ?= $(noinst_HEADERS)
1520
1521 .PHONY: _gl_tight_scope
1522 _gl_tight_scope: $(bin_PROGRAMS)
1523         t=exceptions-$$$$;                                              \
1524         trap 's=$$?; rm -f $$t; exit $$s' 0;                            \
1525         for sig in 1 2 3 13 15; do                                      \
1526           eval "trap 'v=`expr $$sig + 128`; (exit $$v); exit $$v' $$sig"; \
1527         done;                                                           \
1528         src=`for f in $(SOURCES); do                                    \
1529                test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`;   \
1530         hdr=`for f in $(_gl_TS_headers); do                             \
1531                test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`;   \
1532         ( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_functions);  \
1533           grep -h -A1 '^extern .*[^;]$$' $$src                          \
1534             | grep -vE '^(extern |--)' | sed 's/ .*//';                 \
1535           perl -lne                                                     \
1536              '$(_gl_TS_function_match) and print "^$$1\$$"' $$hdr;      \
1537         ) | sort -u > $$t;                                              \
1538         nm -e $(_gl_TS_obj_files) | sed -n 's/.* T //p'|grep -Ev -f $$t \
1539           && { echo the above functions should have static scope >&2;   \
1540                exit 1; } || : ;                                         \
1541         ( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_vars);       \
1542           perl -lne '$(_gl_TS_var_match) and print "^$$1\$$"' $$hdr *.h \
1543         ) | sort -u > $$t;                                              \
1544         nm -e $(_gl_TS_obj_files) | sed -n 's/.* [BCDGRS] //p'          \
1545             | sort -u | grep -Ev -f $$t                                 \
1546           && { echo the above variables should have static scope >&2;   \
1547                exit 1; } || :
1548 # TS-end
1549 endif