2 # This Makefile fragment tries to be general-purpose enough to be
3 # used by many projects via the gnulib maintainer-makefile module.
5 ## Copyright (C) 2001-2010 Free Software Foundation, Inc.
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.
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.
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/>.
20 # This is reported not to work with make-3.79.1
21 # ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
24 # Override this in cfg.mk if you use a non-standard build-aux directory.
25 build_aux ?= $(srcdir)/build-aux
27 # Do not save the original name or timestamp in the .tar.gz file.
28 # Use --rsyncable if available.
30 $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null && echo --rsyncable)
31 GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
35 VC-tag = git tag -s -m '$(VERSION)' -u '$(gpg_key_ID)'
37 VC_LIST = $(build_aux)/vc-list-files -C $(srcdir)
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 ?= ^$$
43 # This is to preprocess robustly the output of $(VC_LIST), so that even
44 # when $(srcdir) is a pathological name like "....", the leading sed command
45 # removes only the intended prefix.
46 _dot_escaped_srcdir = $(subst .,\.,$(srcdir))
48 # Post-process $(VC_LIST) output, prepending $(srcdir)/, but only
49 # when $(srcdir) is not ".".
51 _prepend_srcdir_prefix =
53 _prepend_srcdir_prefix = | sed 's|^|$(srcdir)/|'
56 # In order to be able to consistently filter "."-relative names,
57 # (i.e., with no $(srcdir) prefix), this definition is careful to
58 # remove any $(srcdir) prefix, and to restore what it removes.
60 $(VC_LIST) | sed 's|^$(_dot_escaped_srcdir)/||' \
61 | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
62 else grep -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
63 | grep -Ev -e '$(VC_LIST_ALWAYS_EXCLUDE_REGEX)' \
64 $(_prepend_srcdir_prefix)
66 ifeq ($(origin prev_version_file), undefined)
67 prev_version_file = $(srcdir)/.prev-version
70 PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
71 VERSION_REGEXP = $(subst .,\.,$(VERSION))
72 PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
75 this-vc-tag = v$(VERSION)
76 this-vc-tag-regexp = v$(VERSION_REGEXP)
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)
83 my_distdir = $(PACKAGE)-$(VERSION)
85 # Old releases are stored here.
86 release_archive_dir ?= ../release
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))
96 ifeq ($(gnu_rel_host),ftp.gnu.org)
97 url_dir_list ?= http://ftpmirror.gnu.org/$(PACKAGE)
99 url_dir_list ?= ftp://$(gnu_rel_host)/gnu/$(PACKAGE)
102 # Override this in cfg.mk if you are using a different format in your
104 today = $(shell date +%Y-%m-%d)
105 news-check-regexp ?= '^\*.* $(VERSION_REGEXP) \($(today)\)'
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.
111 ## --------------- ##
113 ## --------------- ##
115 _cfg_mk := $(shell test -f $(srcdir)/cfg.mk && echo '$(srcdir)/cfg.mk')
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)
122 local-checks-available = \
123 $(syntax-check-rules)
124 .PHONY: $(local-checks-available)
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_)
131 @echo $(patsubst sc_%.m, %, $@)
132 @date +%s.%N > .sc-start-$(basename $@)
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
144 # The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
145 # that computes and prints elapsed time.
147 $(patsubst sc_%, sc_%.z, \
148 $(filter-out $(local-checks-to-skip), $(local-checks-available)))
150 syntax-check: $(local-check)
154 # This macro searches for a given construct in the selected files and
155 # then takes some action.
157 # Parameters (shell variables):
161 # Regular expression (ERE) denoting either a forbidden construct
162 # or a required construct. Those arguments are exclusive.
164 # in_vc_files | in_files
166 # grep-E-style regexp denoting the files to check. If no files
167 # are specified the default are all the files that are under
170 # containing | non_containing
172 # Select the files (non) containing strings matching this regexp.
173 # If both arguments are specified then CONTAINING takes
178 # Extra options for grep.
186 # Message to display before to halting execution.
188 # By default, _sc_search_regexp does not ignore case.
190 _ignore_case = $$(test -n "$$ignore_case" && echo -i || :)
192 define _sc_say_and_exit
193 dummy=; : so we do not need a semicolon before each use; \
194 { echo -e "$(ME): $$msg" 1>&2; exit 1; };
197 # _sc_search_regexp used to be named _prohibit_regexp. However,
198 # upgrading to the new definition and leaving the old name undefined
199 # would usually convert each custom rule using $(_prohibit_regexp)
200 # (usually defined in cfg.mk) into a no-op. This definition ensures
201 # that people know right away if they're still using the old name.
202 # FIXME: remove in 2012.
204 $(error '*** you need to s/_prohibit_regexp/_sc_search_regexp/, and adapt')
206 define _sc_search_regexp
207 dummy=; : so we do not need a semicolon before each use; \
210 test -n "$$prohibit" && test -n "$$require" \
211 && { msg='Cannot specify both prohibit and require' \
212 $(_sc_say_and_exit) } || :; \
213 test -z "$$prohibit" && test -z "$$require" \
214 && { msg='Should specify either prohibit or require' \
215 $(_sc_say_and_exit) } || :; \
216 test -n "$$in_vc_files" && test -n "$$in_files" \
217 && { msg='Cannot specify both in_vc_files and in_files' \
218 $(_sc_say_and_exit) } || :; \
219 test "x$$halt" != x \
220 || { msg='halt not defined' $(_sc_say_and_exit) }; \
222 : Filter by file name; \
223 if test -n "$$in_files"; then \
224 files=$$(find $(srcdir) | grep -E "$$in_files"); \
226 files=$$($(VC_LIST_EXCEPT)); \
227 if test -n "$$in_vc_files"; then \
228 files=$$(echo "$$files" | grep -E "$$in_vc_files"); \
232 : Filter by content; \
233 test -n "$$files" && test -n "$$containing" \
234 && { files=$$(grep -l "$$containing" $$files); } || :; \
235 test -n "$$files" && test -n "$$non_containing" \
236 && { files=$$(grep -vl "$$non_containing" $$files); } || :; \
238 : Check for the construct; \
239 if test -n "$$files"; then \
240 if test -n "$$prohibit"; then \
241 grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
242 && { msg="$$halt" $(_sc_say_and_exit) } || :; \
244 grep $$with_grep_options $(_ignore_case) -LE "$$require" $$files \
246 && { msg="$$halt" $(_sc_say_and_exit) } || :; \
252 sc_avoid_if_before_free:
253 @$(build_aux)/useless-if-before-free \
254 $(useless_free_options) \
255 $$($(VC_LIST_EXCEPT) | grep -v useless-if-before-free) && \
256 { echo '$(ME): found useless "if" before "free" above' 1>&2; \
259 sc_cast_of_argument_to_free:
260 @prohibit='\<free *\( *\(' halt='don'\''t cast free argument' \
263 sc_cast_of_x_alloc_return_value:
264 @prohibit='\*\) *x(m|c|re)alloc\>' \
265 halt='don'\''t cast x*alloc return value' \
268 sc_cast_of_alloca_return_value:
269 @prohibit='\*\) *alloca\>' \
270 halt='don'\''t cast alloca return value' \
275 halt='found SPACE-TAB sequence; remove the SPACE' \
278 # Don't use *scanf or the old ato* functions in `real' code.
279 # They provide no error checking mechanism.
280 # Instead, use strto* functions.
281 sc_prohibit_atoi_atof:
282 @prohibit='\<([fs]?scanf|ato([filq]|ll)) *\(' \
283 halt='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q' \
286 # Use STREQ rather than comparing strcmp == 0, or != 0.
288 @grep -nE '! *str''cmp *\(|\<str''cmp *\([^)]+\) *==' \
289 $$($(VC_LIST_EXCEPT)) \
290 | grep -vE ':# *define STREQ\(' && \
291 { echo '$(ME): use STREQ in place of the above uses of str''cmp' \
294 # Pass EXIT_*, not number, to usage, exit, and error (when exiting)
295 # Convert all uses automatically, via these two commands:
296 # git grep -l '\<exit *(1)' \
297 # | grep -vEf .x-sc_prohibit_magic_number_exit \
298 # | xargs --no-run-if-empty \
299 # perl -pi -e 's/(^|[^.])\b(exit ?)\(1\)/$1$2(EXIT_FAILURE)/'
300 # git grep -l '\<exit *(0)' \
301 # | grep -vEf .x-sc_prohibit_magic_number_exit \
302 # | xargs --no-run-if-empty \
303 # perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
304 sc_prohibit_magic_number_exit:
305 @prohibit='(^|[^.])\<(usage|exit) ?\([0-9]|\<error ?\([1-9][0-9]*,' \
306 halt='use EXIT_* values rather than magic number' \
309 # Using EXIT_SUCCESS as the first argument to error is misleading,
310 # since when that parameter is 0, error does not exit. Use `0' instead.
311 sc_error_exit_success:
312 @prohibit='error *\(EXIT_SUCCESS,' \
313 in_vc_files='\.[chly]$$' \
314 halt='found error (EXIT_SUCCESS' \
317 # `FATAL:' should be fully upper-cased in error messages
318 # `WARNING:' should be fully upper-cased, or fully lower-cased
319 sc_error_message_warn_fatal:
320 @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
321 | grep -E '"Warning|"Fatal|"fatal' && \
322 { echo '$(ME): use FATAL, WARNING or warning' 1>&2; \
325 # Error messages should not start with a capital letter
326 sc_error_message_uppercase:
327 @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
329 | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' && \
330 { echo '$(ME): found capitalized error message' 1>&2; \
333 # Error messages should not end with a period
334 sc_error_message_period:
335 @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
336 | grep -E '[^."]\."' && \
337 { echo '$(ME): found error message ending in period' 1>&2; \
341 @prohibit=file''system \
343 halt='found use of "file''system"; spell it "file system"' \
346 # Don't use cpp tests of this symbol. All code assumes config.h is included.
347 sc_prohibit_have_config_h:
348 @prohibit='^# *if.*HAVE''_CONFIG_H' \
349 halt='found use of HAVE''_CONFIG_H; remove' \
352 # Nearly all .c files must include <config.h>. However, we also permit this
353 # via inclusion of a package-specific header, if cfg.mk specified one.
354 # config_h_header must be suitable for grep -E.
355 config_h_header ?= <config\.h>
357 @require='^# *include $(config_h_header)' \
358 in_vc_files='\.c$$' \
359 halt='the above files do not include <config.h>' \
362 # You must include <config.h> before including any other header file.
363 # This can possibly be via a package-specific header, if given by cfg.mk.
364 sc_require_config_h_first:
365 @if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then \
367 for i in $$($(VC_LIST_EXCEPT) | grep '\.c$$'); do \
368 grep '^# *include\>' $$i | sed 1q \
369 | grep -E '^# *include $(config_h_header)' > /dev/null \
370 || { echo $$i; fail=1; }; \
373 { echo '$(ME): the above files include some other header' \
374 'before <config.h>' 1>&2; exit 1; } || :; \
378 sc_prohibit_HAVE_MBRTOWC:
379 @prohibit='\bHAVE_MBRTOWC\b' \
380 halt="do not use $$prohibit; it is always defined" \
383 # To use this "command" macro, you must first define two shell variables:
384 # h: the header, enclosed in <> or ""
385 # re: a regular expression that matches IFF something provided by $h is used.
386 define _sc_header_without_use
387 dummy=; : so we do not need a semicolon before each use; \
388 h_esc=`echo "$$h"|sed 's/\./\\\\./g'`; \
389 if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then \
390 files=$$(grep -l '^# *include '"$$h_esc" \
391 $$($(VC_LIST_EXCEPT) | grep '\.c$$')) && \
392 grep -LE "$$re" $$files | grep . && \
393 { echo "$(ME): the above files include $$h but don't use it" \
394 1>&2; exit 1; } || :; \
399 # Prohibit the inclusion of assert.h without an actual use of assert.
400 sc_prohibit_assert_without_use:
401 @h='<assert.h>' re='\<assert *\(' $(_sc_header_without_use)
403 # Prohibit the inclusion of close-stream.h without an actual use.
404 sc_prohibit_close_stream_without_use:
405 @h='"close-stream.h"' re='\<close_stream *\(' $(_sc_header_without_use)
407 # Prohibit the inclusion of getopt.h without an actual use.
408 sc_prohibit_getopt_without_use:
409 @h='<getopt.h>' re='\<getopt(_long)? *\(' $(_sc_header_without_use)
411 # Don't include quotearg.h unless you use one of its functions.
412 sc_prohibit_quotearg_without_use:
413 @h='"quotearg.h"' re='\<quotearg(_[^ ]+)? *\(' $(_sc_header_without_use)
415 # Don't include quote.h unless you use one of its functions.
416 sc_prohibit_quote_without_use:
417 @h='"quote.h"' re='\<quote(_n)? *\(' $(_sc_header_without_use)
419 # Don't include this header unless you use one of its functions.
420 sc_prohibit_long_options_without_use:
421 @h='"long-options.h"' re='\<parse_long_options *\(' \
422 $(_sc_header_without_use)
424 # Don't include this header unless you use one of its functions.
425 sc_prohibit_inttostr_without_use:
426 @h='"inttostr.h"' re='\<(off|[iu]max|uint)tostr *\(' \
427 $(_sc_header_without_use)
429 # Don't include this header unless you use one of its functions.
430 sc_prohibit_ignore_value_without_use:
431 @h='"ignore-value.h"' re='\<ignore_(value|ptr) *\(' \
432 $(_sc_header_without_use)
434 # Don't include this header unless you use one of its functions.
435 sc_prohibit_error_without_use:
437 re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
438 $(_sc_header_without_use)
440 # Don't include xalloc.h unless you use one of its functions.
441 # Consider these symbols:
442 # perl -lne '/^# *define (\w+)\(/ and print $1' lib/xalloc.h|grep -v '^__';
443 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/xalloc.h
444 # Divide into two sets on case, and filter each through this:
445 # | sort | perl -MRegexp::Assemble -le \
446 # 'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
447 # Note this was produced by the above:
449 #x(((2n?)?re|c(har)?|n(re|m)|z)alloc|alloc_(oversized|die)|m(alloc|emdup)|strdup)
450 # But we can do better, in at least two ways:
451 # 1) take advantage of two "dup"-suffixed strings:
452 # x(((2n?)?re|c(har)?|n(re|m)|[mz])alloc|alloc_(oversized|die)|(mem|str)dup)
453 # 2) notice that "c(har)?|[mz]" is equivalent to the shorter and more readable
455 # x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
456 _xa1 = x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
457 _xa2 = X([CZ]|N?M)ALLOC
458 sc_prohibit_xalloc_without_use:
460 re='\<($(_xa1)|$(_xa2)) *\('\
461 $(_sc_header_without_use)
463 # Extract function names:
464 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/hash.h
466 clear|delete|free|get_(first|next)|insert|lookup|print_statistics|reset_tuning
467 _hash_fn = \<($(_hash_re)) *\(
468 _hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
469 sc_prohibit_hash_without_use:
471 re='$(_hash_fn)|$(_hash_struct)'\
472 $(_sc_header_without_use)
474 sc_prohibit_hash_pjw_without_use:
476 re='\<hash_pjw *\(' \
477 $(_sc_header_without_use)
479 sc_prohibit_safe_read_without_use:
480 @h='"safe-read.h"' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
481 $(_sc_header_without_use)
483 sc_prohibit_argmatch_without_use:
485 re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<argmatch(_exit_fn|_(in)?valid) *\()' \
486 $(_sc_header_without_use)
488 sc_prohibit_canonicalize_without_use:
489 @h='"canonicalize.h"' \
490 re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode)' \
491 $(_sc_header_without_use)
493 sc_prohibit_root_dev_ino_without_use:
494 @h='"root-dev-ino.h"' \
495 re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
496 $(_sc_header_without_use)
498 sc_prohibit_openat_without_use:
500 re='\<(openat_(permissive|needs_fchdir|(save|restore)_fail)|l?(stat|ch(own|mod))at|(euid)?accessat)\>' \
501 $(_sc_header_without_use)
503 # Prohibit the inclusion of c-ctype.h without an actual use.
504 ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
505 |isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
506 sc_prohibit_c_ctype_without_use:
507 @h='[<"]c-ctype.h[">]' re='\<c_($(ctype_re)) *\(' \
508 $(_sc_header_without_use)
511 _sp = $(_empty) $(_empty)
512 # The following list was generated by running:
513 # man signal.h|col -b|perl -ne '/bsd_signal.*;/.../sigwaitinfo.*;/ and print' \
514 # | perl -lne '/^\s+(?:int|void).*?(\w+).*/ and print $1' | fmt
516 bsd_signal kill killpg pthread_kill pthread_sigmask raise sigaction \
517 sigaddset sigaltstack sigdelset sigemptyset sigfillset sighold sigignore \
518 siginterrupt sigismember signal sigpause sigpending sigprocmask sigqueue \
519 sigrelse sigset sigsuspend sigtimedwait sigwait sigwaitinfo
520 _sig_function_re = $(subst $(_sp),|,$(strip $(_sig_functions)))
521 # The following were extracted from "man signal.h" manually.
522 _sig_types_and_consts = \
523 MINSIGSTKSZ SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK \
524 SA_RESETHAND SA_RESTART SA_SIGINFO SIGEV_NONE SIGEV_SIGNAL \
525 SIGEV_THREAD SIGSTKSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SS_DISABLE \
526 SS_ONSTACK mcontext_t pid_t sig_atomic_t sigevent siginfo_t sigset_t \
527 sigstack sigval stack_t ucontext_t
528 # generated via this:
529 # perl -lne '/^#ifdef (SIG\w+)/ and print $1' lib/sig2str.c|sort -u|fmt -70
531 SIGABRT SIGALRM SIGALRM1 SIGBUS SIGCANCEL SIGCHLD SIGCLD SIGCONT \
532 SIGDANGER SIGDIL SIGEMT SIGFPE SIGFREEZE SIGGRANT SIGHUP SIGILL \
533 SIGINFO SIGINT SIGIO SIGIOT SIGKAP SIGKILL SIGKILLTHR SIGLOST SIGLWP \
534 SIGMIGRATE SIGMSG SIGPHONE SIGPIPE SIGPOLL SIGPRE SIGPROF SIGPWR \
535 SIGQUIT SIGRETRACT SIGSAK SIGSEGV SIGSOUND SIGSTKFLT SIGSTOP SIGSYS \
536 SIGTERM SIGTHAW SIGTRAP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGUSR1 \
537 SIGUSR2 SIGVIRT SIGVTALRM SIGWAITING SIGWINCH SIGWIND SIGWINDOW \
539 _sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
541 # Prohibit the inclusion of signal.h without an actual use.
542 sc_prohibit_signal_without_use:
544 re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>' \
545 $(_sc_header_without_use)
547 # Prohibit the inclusion of strings.h without a sensible use.
548 # Using the likes of bcmp, bcopy, bzero, index or rindex is not sensible.
549 sc_prohibit_strings_without_use:
551 re='\<(strn?casecmp|ffs(ll)?)\>' \
552 $(_sc_header_without_use)
554 # Get the list of symbol names with this:
555 # perl -lne '/^# *define (\w+)\(/ and print $1' lib/intprops.h|grep -v '^s'|fmt
557 TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT \
558 TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM \
559 INT_STRLEN_BOUND INT_BUFSIZE_BOUND
560 _intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
561 # Prohibit the inclusion of intprops.h without an actual use.
562 sc_prohibit_intprops_without_use:
564 re='\<($(_intprops_syms_re)) *\(' \
565 $(_sc_header_without_use)
568 @prohibit='\<(HAVE''_FCNTL_H|O''_NDELAY)\>' \
569 halt='do not use HAVE''_FCNTL_H or O'_NDELAY \
572 # FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
574 # Each nonempty ChangeLog line must start with a year number, or a TAB.
576 @prohibit='^[^12 ]' \
577 in_vc_files='^ChangeLog$$' \
578 halt='found unexpected prefix in a ChangeLog' \
581 # Ensure that each .c file containing a "main" function also
582 # calls set_program_name.
584 @require='set_program_name *\(m?argv\[0\]\);' \
585 in_vc_files='\.c$$' \
586 containing='^main *(' \
587 halt='the above files do not call set_program_name' \
590 # Require that the final line of each test-lib.sh-using test be this one:
592 # Note: this test requires GNU grep's --label= option.
593 Exit_witness_file ?= tests/test-lib.sh
594 Exit_base := $(notdir $(Exit_witness_file))
595 sc_require_test_exit_idiom:
596 @if test -f $(srcdir)/$(Exit_witness_file); then \
598 for i in $$(grep -l -F 'srcdir/$(Exit_base)' \
599 $$($(VC_LIST) tests)); do \
600 tail -n1 $$i | grep '^Exit .' > /dev/null \
601 && : || { die=1; echo $$i; } \
604 { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
605 echo 1>&2 'Exit something'; \
610 @prohibit='\<the ''the\>' \
612 halt='found use of "the ''the";' \
617 halt='found trailing blank(s)' \
620 # Match lines like the following, but where there is only one space
621 # between the options and the description:
622 # -D, --all-repeated[=delimit-method] print all duplicate lines\n
623 longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
624 sc_two_space_separator_in_usage:
625 @prohibit='^ *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$' \
626 halt='help2man requires at least two spaces between an option and its description'\
629 # Look for diagnostics that aren't marked for translation.
630 # This won't find any for which error's format string is on a separate line.
631 sc_unmarked_diagnostics:
633 '\<error *\([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT)) \
634 | grep -v '_''(' && \
635 { echo '$(ME): found unmarked diagnostic(s)' 1>&2; \
638 # Avoid useless parentheses like those in this example:
639 # #if defined (SYMBOL) || defined (SYM2)
640 sc_useless_cpp_parens:
641 @prohibit='^# *if .*defined *\(' \
642 halt='found useless parentheses in cpp directive' \
645 # List headers for which HAVE_HEADER_H is always true, assuming you are
646 # using the appropriate gnulib module. CAUTION: for each "unnecessary"
647 # #if HAVE_HEADER_H that you remove, be sure that your project explicitly
648 # requires the gnulib module that guarantees the usability of that header.
649 gl_assured_headers_ = \
650 cd $(gnulib_dir)/lib && echo *.in.h|sed 's/\.in\.h//g'
652 # Convert the list of names to upper case, and replace each space with "|".
653 az_ = abcdefghijklmnopqrstuvwxyz
654 AZ_ = ABCDEFGHIJKLMNOPQRSTUVWXYZ
655 gl_header_upper_case_or_ = \
656 $$($(gl_assured_headers_) \
657 | tr $(az_)/.- $(AZ_)___ \
660 sc_prohibit_always_true_header_tests:
661 @or=$(gl_header_upper_case_or_); \
662 re="HAVE_($$or)_H"; \
663 prohibit='\<'"$$re"'\>' \
664 halt='do not test the above HAVE_<header>_H symbol(s);\n'\
665 ' with the corresponding gnulib module, they are always true' \
668 # Prohibit checked in backup files.
669 sc_prohibit_backup_files:
670 @$(VC_LIST) | grep '~$$' && \
671 { echo '$(ME): found version controlled backup file' 1>&2; \
674 # Require the latest GPL.
676 @prohibit='either ''version [^3]' \
677 halt='GPL vN, N!=3' \
680 # Require the latest GFDL. Two regexp, since some .texi files end up
681 # line wrapping between 'Free Documentation License,' and 'Version'.
682 _GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
684 @prohibit='$(_GFDL_regexp)' \
685 halt='GFDL vN, N!=3' \
688 # Don't use Texinfo @acronym{} as it is not a good idea.
689 texinfo_suffix_re_ ?= \.(txi|texi(nfo)?)$$
691 @prohibit='@acronym\{' \
692 in_vc_files='$(texinfo_suffix_re_)' \
693 halt='found use of Texinfo @acronym{}' \
697 Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State
699 sc_prohibit_cvs_keyword:
700 @prohibit='\$$($(cvs_keywords))\$$' \
701 halt='do not use CVS keyword expansion' \
704 # This Perl code is slightly obfuscated. Not only is each "$" doubled
705 # because it's in a Makefile, but the $$c's are comments; we cannot
706 # use "#" due to the way the script ends up concatenated onto one line.
707 # It would be much more concise, and would produce better output (including
708 # counts) if written as:
709 # perl -ln -0777 -e '/\n(\n+)$/ and print "$ARGV: ".length $1' ...
710 # but that would be far less efficient, reading the entire contents
711 # of each file, rather than just the last two bytes of each.
713 # This is a perl script that is expected to be the single-quoted argument
714 # to a command-line "-le". The remaining arguments are file names.
715 # Print the name of each file that ends in two or more newline bytes.
716 # Exit nonzero if at least one such file is found, otherwise, exit 0.
717 # Warn about, but otherwise ignore open failure. Ignore seek/read failure.
719 # Use this if you want to remove trailing empty lines from selected files:
720 # perl -pi -0777 -e 's/\n\n+$/\n/' files...
722 detect_empty_lines_at_EOF_ = \
723 foreach my $$f (@ARGV) \
725 open F, "<", $$f or (warn "failed to open $$f: $$!\n"), next; \
726 my $$p = sysseek (F, -2, 2); \
727 my $$c = "seek failure probably means file has < 2 bytes; ignore"; \
728 my $$last_two_bytes; \
729 defined $$p and $$p = sysread F, $$last_two_bytes, 2; \
731 $$c = "ignore read failure"; \
732 $$p && $$last_two_bytes eq "\n\n" and (print $$f), $$fail=1; \
734 END { exit defined $$fail }
735 sc_prohibit_empty_lines_at_EOF:
736 @perl -le '$(detect_empty_lines_at_EOF_)' $$($(VC_LIST_EXCEPT)) \
737 || { echo '$(ME): the above files end with empty line(s)' \
738 1>&2; exit 1; } || :; \
740 # Make sure we don't use st_blocks. Use ST_NBLOCKS instead.
741 # This is a bit of a kludge, since it prevents use of the string
742 # even in comments, but for now it does the job with no false positives.
743 sc_prohibit_stat_st_blocks:
744 @prohibit='[.>]st_blocks' \
745 halt='do not use st_blocks; use ST_NBLOCKS' \
748 # Make sure we don't define any S_IS* macros in src/*.c files.
749 # They're already defined via gnulib's sys/stat.h replacement.
750 sc_prohibit_S_IS_definition:
751 @prohibit='^ *# *define *S_IS' \
752 halt='do not define S_IS* macros; include <sys/stat.h>' \
755 _ptm1 = use "test C1 && test C2", not "test C1 -''a C2"
756 _ptm2 = use "test C1 || test C2", not "test C1 -''o C2"
757 # Using test's -a and -o operators is not portable.
758 # We prefer test over [, since the latter is spelled [[ in configure.ac.
759 sc_prohibit_test_minus_ao:
760 @prohibit='(\<test| \[+) .+ -[ao] ' \
761 halt='$(_ptm1); $(_ptm2)' \
764 # Each program that uses proper_name_utf8 must link with one of the
765 # ICONV libraries. Otherwise, some ICONV library must appear in LDADD.
766 # The perl -0777 invocation below extracts the possibly-multi-line
767 # definition of LDADD from the appropriate Makefile.am and exits 0
768 # when it contains "ICONV".
769 sc_proper_name_utf8_requires_ICONV:
770 @progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
771 if test "x$$progs" != x; then \
773 for p in $$progs; do \
774 dir=$$(dirname "$$p"); \
776 -ne 'exit !(/^LDADD =(.+?[^\\]\n)/ms && $$1 =~ /ICONV/)' \
777 $$dir/Makefile.am && continue; \
778 base=$$(basename "$$p" .c); \
779 grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null \
780 || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
783 { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
787 # Warn about "c0nst struct Foo const foo[]",
788 # but not about "char const *const foo" or "#define const const".
790 @prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b' \
791 halt='redundant "const" in declarations' \
794 sc_const_long_option:
795 @grep '^ *static.*struct option ' $$($(VC_LIST_EXCEPT)) \
796 | grep -Ev 'const struct option|struct option const' && { \
797 echo 1>&2 '$(ME): add "const" to the above declarations'; \
801 $$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p' \
804 's/^Copyright.+?Free\sSoftware\sFoundation,\sInc\.\n//ms' \
808 # Ensure that we don't accidentally insert an entry into an old NEWS block.
810 @if test -f $(srcdir)/NEWS; then \
811 test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : || \
812 { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; }; \
815 # Update the hash stored above. Do this after each release and
816 # for any corrections to old entries.
817 update-NEWS-hash: NEWS
818 perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
821 # Ensure that we use only the standard $(VAR) notation,
822 # not @...@ in Makefile.am, now that we can rely on automake
823 # to emit a definition for each substituted variable.
824 # We use perl rather than "grep -nE ..." to exempt a single
825 # use of an @...@-delimited variable name in src/Makefile.am.
826 # Allow the package to add exceptions via a hook in cfg.mk;
827 # for example, @PRAGMA_SYSTEM_HEADER@ can be permitted by
828 # setting this to ' && !/PRAGMA_SYSTEM_HEADER/'.
829 _makefile_at_at_check_exceptions ?=
830 sc_makefile_at_at_check:
831 @perl -ne '/\@[A-Z_0-9]+\@/'$(_makefile_at_at_check_exceptions) \
832 -e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}' \
833 $$($(VC_LIST_EXCEPT) | grep -E '(^|/)Makefile\.am$$') \
834 && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
837 if head $(srcdir)/NEWS | grep -E $(news-check-regexp) \
841 echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2; \
845 sc_makefile_TAB_only_indentation:
846 @prohibit='^ [ ]{8}' \
847 in_vc_files='akefile|\.mk$$' \
848 halt='found TAB-8-space indentation' \
852 @prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]' \
853 in_vc_files='(^configure\.ac|\.m4)$$' \
854 halt='quote the first arg to AC_DEF*' \
858 'you have changed the set of files with translatable diagnostics;\n\
859 apply the above patch\n'
861 # Verify that all source files using _() are listed in po/POTFILES.in.
862 po_file = po/POTFILES.in
864 @if test -f $(po_file); then \
865 grep -E -v '^(#|$$)' $(po_file) \
866 | grep -v '^src/false\.c$$' | sort > $@-1; \
868 for file in $$($(VC_LIST_EXCEPT)) lib/*.[ch]; do \
869 test -r $$file || continue; \
871 *.m4|*.mk) continue ;; \
877 base=`expr " $$file" : ' \(.*\)\..'`; \
878 { test -f $$base.l || test -f $$base.y; } && continue;; \
880 files="$$files $$file"; \
882 grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files \
884 diff -u -L $(po_file) -L $(po_file) $@-1 $@-2 \
885 || { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; }; \
889 # Sometimes it is useful to change the PATH environment variable
890 # in Makefiles. When doing so, it's better not to use the Unix-centric
891 # path separator of `:', but rather the automake-provided `$(PATH_SEPARATOR)'.
892 msg = '$(ME): Do not use `:'\'' above; use $$(PATH_SEPARATOR) instead'
893 sc_makefile_path_separator_check:
894 @prohibit='PATH[=].*:' \
895 in_vc_files='akefile|\.mk$$' \
899 # Check that `make alpha' will not fail at the end of the process.
901 if test -d $(release_archive_dir); then :; else \
902 for file in $(distdir).tar.gz \
903 $(release_archive_dir)/$(distdir).tar.gz; do \
904 test -e $$file || continue; \
906 || { echo ERROR: $$file is not writable; fail=1; }; \
908 test "$$fail" && exit 1 || : ; \
911 v_etc_file = lib/version-etc.c
912 sample-test = tests/sample-test
913 texi = doc/$(PACKAGE).texi
914 # Make sure that the copyright date in $(v_etc_file) is up to date.
915 # Do the same for the $(sample-test) and the main doc/.texi file.
917 @require='enum { COPYRIGHT_YEAR = '$$(date +%Y)' };' \
918 in_files=$(v_etc_file) \
919 halt='out of date copyright in $(v_etc_file); update it' \
921 @require='# Copyright \(C\) '$$(date +%Y)' Free' \
922 in_vc_files=$(sample-test) \
923 halt='out of date copyright in $(sample-test); update it' \
925 @require='Copyright @copyright\{\} .*'$$(date +%Y)' Free' \
926 in_vc_files=$(texi) \
927 halt='out of date copyright in $(texi); update it' \
930 # If tests/help-version exists and seems to be new enough, assume that its
931 # use of init.sh and path_prepend_ is correct, and ensure that every other
932 # use of init.sh is identical.
933 # This is useful because help-version cross-checks prog --version
934 # with $(VERSION), which verifies that its path_prepend_ invocation
935 # sets PATH correctly. This is an inexpensive way to ensure that
936 # the other init.sh-using tests also get it right.
937 _hv_file ?= $(srcdir)/tests/help-version
938 _hv_regex ?= ^ *\. [^ ]*/init\.sh
939 sc_cross_check_PATH_usage_in_tests:
940 @if test -f $(_hv_file); then \
941 if grep -l 'VERSION mismatch' $(_hv_file) >/dev/null \
942 && grep -lE '$(_hv_regex)' $(_hv_file) >/dev/null; then \
943 good=$$(grep -E '$(_hv_regex)' < $(_hv_file)); \
945 $$(grep -lE '$(_hv_regex)' $$($(VC_LIST_EXCEPT))) \
947 { echo "$(ME): the above files use path_prepend_ inconsistently" \
948 1>&2; exit 1; } || :; \
951 echo "$@: skipped: no such file: $(_hv_file)"; \
954 # #if HAVE_... will evaluate to false for any non numeric string.
955 # That would be flagged by using -Wundef, however gnulib currently
956 # tests many undefined macros, and so we can't enable that option.
957 # So at least preclude common boolean strings as macro values.
959 @prohibit='^#define.*(yes|no|true|false)$$' \
960 in_files='$(CONFIG_INCLUDE)' \
961 halt='Use 0 or 1 for macro values' \
964 sc_vulnerable_makefile_CVE-2009-4029:
965 @prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
966 in_files=$$(find $(srcdir) -name Makefile.in) \
967 halt='the above files are vulnerable; beware of running\n'\
968 '"make dist*" rules, and upgrade to fixed automake\n'\
969 'see http://bugzilla.redhat.com/542609 for details' \
973 (unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
974 if test -s vc-diffs; then \
976 echo "Some files are locally modified:" 1>&2; \
982 rel-files = $(DIST_ARCHIVES)
984 gnulib_dir ?= $(srcdir)/gnulib
985 gnulib-version = $$(cd $(gnulib_dir) && git describe)
986 bootstrap-tools ?= autoconf,automake,gnulib
988 # If it's not already specified, derive the GPG key ID from
989 # the signed tag we've just applied to mark this release.
991 $$(git cat-file tag v$(VERSION) > .ann-sig \
992 && gpgv .ann-sig - < /dev/null 2>&1 \
993 | sed -n '/.*key ID \([0-9A-F]*\)/s//\1/p'; rm -f .ann-sig)
995 translation_project_ ?= coordinator@translationproject.org
996 announcement_Cc_ ?= $(translation_project_), $(PACKAGE_BUGREPORT)
997 announcement_mail_headers_ ?= \
998 To: info-gnu@gnu.org \
999 Cc: $(announcement_Cc_) \
1000 Mail-Followup-To: $(PACKAGE_BUGREPORT)
1002 announcement: NEWS ChangeLog $(rel-files)
1003 @$(build_aux)/announce-gen \
1004 --mail-headers='$(announcement_mail_headers_)' \
1005 --release-type=$(RELEASE_TYPE) \
1006 --package=$(PACKAGE) \
1007 --prev=$(PREV_VERSION) \
1009 --gpg-key-id=$(gpg_key_ID) \
1010 --news=$(srcdir)/NEWS \
1011 --bootstrap-tools=$(bootstrap-tools) \
1012 --gnulib-version=$(gnulib-version) \
1013 --no-print-checksums \
1014 $(addprefix --url-dir=, $(url_dir_list))
1016 ## ---------------- ##
1017 ## Updating files. ##
1018 ## ---------------- ##
1020 ftp-gnu = ftp://ftp.gnu.org/gnu
1021 www-gnu = http://www.gnu.org
1023 upload_dest_dir_ ?= $(PACKAGE)
1024 emit_upload_commands:
1025 @echo =====================================
1026 @echo =====================================
1027 @echo "$(build_aux)/gnupload $(GNUPLOADFLAGS) \\"
1028 @echo " --to $(gnu_rel_host):$(upload_dest_dir_) \\"
1029 @echo " $(rel-files)"
1030 @echo '# send the ~/announce-$(my_distdir) e-mail'
1031 @echo =====================================
1032 @echo =====================================
1034 noteworthy = * Noteworthy changes in release ?.? (????-??-??) [?]
1035 define emit-commit-log
1036 printf '%s\n' 'post-release administrivia' '' \
1037 '* NEWS: Add header line for next release.' \
1038 '* .prev-version: Record previous version.' \
1039 '* cfg.mk (old_NEWS_hash): Auto-update.'
1042 .PHONY: no-submodule-changes
1043 no-submodule-changes:
1044 if test -d $(srcdir)/.git; then \
1045 diff=$$(cd $(srcdir) && git submodule -q foreach \
1046 git diff-index --name-only HEAD) \
1048 case $$diff in '') ;; \
1049 *) echo '$(ME): submodule files are locally modified:'; \
1050 echo "$$diff"; exit 1;; esac; \
1055 .PHONY: alpha beta stable
1056 ALL_RECURSIVE_TARGETS += alpha beta stable
1057 alpha beta stable: $(local-check) writable-files no-submodule-changes
1059 && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$' \
1060 || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
1062 $(MAKE) vc-diff-check
1065 $(MAKE) dist XZ_OPT=-9ev
1066 $(MAKE) $(release-prep-hook) RELEASE_TYPE=$@
1067 $(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
1069 # Override this in cfg.mk if you follow different procedures.
1070 release-prep-hook ?= release-prep
1072 .PHONY: release-prep
1074 case $$RELEASE_TYPE in alpha|beta|stable) ;; \
1075 *) echo "invalid RELEASE_TYPE: $$RELEASE_TYPE" 1>&2; exit 1;; esac
1076 $(MAKE) -s announcement > ~/announce-$(my_distdir)
1077 if test -d $(release_archive_dir); then \
1078 ln $(rel-files) $(release_archive_dir); \
1079 chmod a-w $(rel-files); \
1081 echo $(VERSION) > $(prev_version_file)
1082 $(MAKE) update-NEWS-hash
1083 perl -pi -e '$$. == 3 and print "$(noteworthy)\n\n\n"' NEWS
1084 $(emit-commit-log) > .ci-msg
1085 $(VC) commit -F .ci-msg -a
1088 # Override this with e.g., -s $(srcdir)/some_other_name.texi
1089 # if the default $(PACKAGE)-derived name doesn't apply.
1094 @test -z "$(manual_title)" \
1095 && { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
1096 @cd '$(srcdir)/doc'; \
1097 $(SHELL) ../build-aux/gendocs.sh $(gendocs_options_) \
1098 -o '$(abs_builddir)/doc/manual' \
1099 --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
1100 "$(PACKAGE_NAME) - $(manual_title)"
1101 @echo " *** Upload the doc/manual directory to web-cvs."
1106 $(MAKE) $(AM_MAKEFLAGS) clean
1107 lcov --directory . --zerocounters
1109 COVERAGE_CCOPTS ?= "-g --coverage"
1110 COVERAGE_OUT ?= doc/coverage
1113 $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS)
1114 $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS) check
1115 mkdir -p $(COVERAGE_OUT)
1116 lcov --directory . --output-file $(COVERAGE_OUT)/$(PACKAGE).info \
1120 genhtml --output-directory $(COVERAGE_OUT) \
1121 $(COVERAGE_OUT)/$(PACKAGE).info \
1122 --highlight --frames --legend \
1123 --title "$(PACKAGE_NAME)"
1125 coverage: init-coverage build-coverage gen-coverage
1127 # Update gettext files.
1128 PACKAGE ?= $(shell basename $(PWD))
1129 PO_DOMAIN ?= $(PACKAGE)
1130 POURL = http://translationproject.org/latest/$(PO_DOMAIN)/
1133 rm -f $(PODIR)/*.po && \
1134 echo "$(ME): getting translations into po (please ignore the robots.txt ERROR 404)..." && \
1135 wget --no-verbose --directory-prefix $(PODIR) --no-directories --recursive --level 1 --accept .po --accept .po.1 $(POURL) && \
1136 echo 'en@boldquot' > $(PODIR)/LINGUAS && \
1137 echo 'en@quot' >> $(PODIR)/LINGUAS && \
1138 ls $(PODIR)/*.po | sed 's/\.po//' | sed 's,$(PODIR)/,,' | sort >> $(PODIR)/LINGUAS
1140 # Running indent once is not idempotent, but running it twice is.
1141 INDENT_SOURCES ?= $(C_SOURCES)
1144 indent $(INDENT_SOURCES)
1145 indent $(INDENT_SOURCES)
1147 # If you want to set UPDATE_COPYRIGHT_* environment variables,
1148 # put the assignments in this variable.
1149 update-copyright-env ?=
1151 # Run this rule once per year (usually early in January)
1152 # to update all FSF copyright year lists in your project.
1153 # If you have an additional project-specific rule,
1154 # add it in cfg.mk along with a line 'update-copyright: prereq'.
1155 # By default, exclude all variants of COPYING; you can also
1156 # add exemptions (such as ChangeLog..* for rotated change logs)
1157 # in the file .x-update-copyright.
1158 .PHONY: update-copyright
1160 grep -l -w Copyright \
1161 $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
1162 | $(update-copyright-env) xargs $(build_aux)/$@