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) 2001-2012 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 # Diagnostic for continued use of deprecated variable.
28 set $$(_build-aux) relative to $$(srcdir) instead of $$(build_aux)")
31 # Do not save the original name or timestamp in the .tar.gz file.
32 # Use --rsyncable if available.
34 $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null \
35 && printf %s --rsyncable)
36 GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
41 VC_LIST = $(srcdir)/$(_build-aux)/vc-list-files -C $(srcdir)
43 # You can override this variable in cfg.mk to set your own regexp
44 # matching files to ignore.
45 VC_LIST_ALWAYS_EXCLUDE_REGEX ?= ^$$
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))
52 # Post-process $(VC_LIST) output, prepending $(srcdir)/, but only
53 # when $(srcdir) is not ".".
55 _prepend_srcdir_prefix =
57 _prepend_srcdir_prefix = | sed 's|^|$(srcdir)/|'
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.
64 $(or $(exclude_file_name_regexp--$@),^$$)
66 $(VC_LIST) | sed 's|^$(_dot_escaped_srcdir)/||' \
67 | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
68 else grep -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
69 | grep -Ev -e '($(VC_LIST_ALWAYS_EXCLUDE_REGEX)|$(_sc_excl))' \
70 $(_prepend_srcdir_prefix)
72 ifeq ($(origin prev_version_file), undefined)
73 prev_version_file = $(srcdir)/.prev-version
76 PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
77 VERSION_REGEXP = $(subst .,\.,$(VERSION))
78 PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
81 this-vc-tag = v$(VERSION)
82 this-vc-tag-regexp = v$(VERSION_REGEXP)
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)
89 my_distdir = $(PACKAGE)-$(VERSION)
91 # Old releases are stored here.
92 release_archive_dir ?= ../release
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))
102 ifeq ($(gnu_rel_host),ftp.gnu.org)
103 url_dir_list ?= http://ftpmirror.gnu.org/$(PACKAGE)
105 url_dir_list ?= ftp://$(gnu_rel_host)/gnu/$(PACKAGE)
108 # Override this in cfg.mk if you are using a different format in your
110 today = $(shell date +%Y-%m-%d)
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) \($(today)\)'
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.
123 ## --------------- ##
125 ## --------------- ##
127 _cfg_mk := $(shell test -f $(srcdir)/cfg.mk && echo '$(srcdir)/cfg.mk')
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: $(syntax-check-rules)
134 ifeq ($(shell $(VC_LIST) >/dev/null 2>&1; echo $$?),0)
135 local-checks-available += $(syntax-check-rules)
137 local-checks-available += no-vc-detected
139 @echo "No version control files detected; skipping syntax check"
141 .PHONY: $(local-checks-available)
143 # Arrange to print the name of each syntax-checking rule just before running it.
144 $(syntax-check-rules): %: %.m
145 sc_m_rules_ = $(patsubst %, %.m, $(syntax-check-rules))
146 .PHONY: $(sc_m_rules_)
148 @echo $(patsubst sc_%.m, %, $@)
149 @date +%s.%N > .sc-start-$(basename $@)
151 # Compute and print the elapsed time for each syntax-check rule.
152 sc_z_rules_ = $(patsubst %, %.z, $(syntax-check-rules))
153 .PHONY: $(sc_z_rules_)
154 $(sc_z_rules_): %.z: %
155 @end=$$(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
161 # The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
162 # that computes and prints elapsed time.
164 $(patsubst sc_%, sc_%.z, \
165 $(filter-out $(local-checks-to-skip), $(local-checks-available)))
167 syntax-check: $(local-check)
171 # This macro searches for a given construct in the selected files and
172 # then takes some action.
174 # Parameters (shell variables):
178 # Regular expression (ERE) denoting either a forbidden construct
179 # or a required construct. Those arguments are exclusive.
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.
188 # in_vc_files | in_files
190 # grep-E-style regexp selecting the files to check. For in_vc_files,
191 # the regexp is used to select matching files from the list of all
192 # version-controlled files; for in_files, it's from the names printed
193 # by "find $(srcdir)". When neither is specified, use all files that
194 # are under version control.
196 # containing | non_containing
198 # Select the files (non) containing strings matching this regexp.
199 # If both arguments are specified then CONTAINING takes
204 # Extra options for grep.
212 # Message to display before to halting execution.
214 # Finally, you may exempt files based on an ERE matching file names.
215 # For example, to exempt from the sc_space_tab check all files with the
216 # .diff suffix, set this Make variable:
218 # exclude_file_name_regexp--sc_space_tab = \.diff$
220 # Note that while this functionality is mostly inherited via VC_LIST_EXCEPT,
221 # when filtering by name via in_files, we explicitly filter out matching
222 # names here as well.
224 # Initialize each, so that envvar settings cannot interfere.
231 export non_containing =
233 export with_grep_options =
235 # By default, _sc_search_regexp does not ignore case.
237 _ignore_case = $$(test -n "$$ignore_case" && printf %s -i || :)
239 define _sc_say_and_exit
240 dummy=; : so we do not need a semicolon before each use; \
241 { printf '%s\n' "$(ME): $$msg" 1>&2; exit 1; };
244 define _sc_search_regexp
245 dummy=; : so we do not need a semicolon before each use; \
248 test -n "$$prohibit" && test -n "$$require" \
249 && { msg='Cannot specify both prohibit and require' \
250 $(_sc_say_and_exit) } || :; \
251 test -z "$$prohibit" && test -z "$$require" \
252 && { msg='Should specify either prohibit or require' \
253 $(_sc_say_and_exit) } || :; \
254 test -z "$$prohibit" && test -n "$$exclude" \
255 && { msg='Use of exclude requires a prohibit pattern' \
256 $(_sc_say_and_exit) } || :; \
257 test -n "$$in_vc_files" && test -n "$$in_files" \
258 && { msg='Cannot specify both in_vc_files and in_files' \
259 $(_sc_say_and_exit) } || :; \
260 test "x$$halt" != x \
261 || { msg='halt not defined' $(_sc_say_and_exit) }; \
263 : Filter by file name; \
264 if test -n "$$in_files"; then \
265 files=$$(find $(srcdir) | grep -E "$$in_files" \
266 | grep -Ev '$(_sc_excl)'); \
268 files=$$($(VC_LIST_EXCEPT)); \
269 if test -n "$$in_vc_files"; then \
270 files=$$(echo "$$files" | grep -E "$$in_vc_files"); \
274 : Filter by content; \
275 test -n "$$files" && test -n "$$containing" \
276 && { files=$$(grep -l "$$containing" $$files); } || :; \
277 test -n "$$files" && test -n "$$non_containing" \
278 && { files=$$(grep -vl "$$non_containing" $$files); } || :; \
280 : Check for the construct; \
281 if test -n "$$files"; then \
282 if test -n "$$prohibit"; then \
283 grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
284 | grep -vE "$${exclude:-^$$}" \
285 && { msg="$$halt" $(_sc_say_and_exit) } || :; \
287 grep $$with_grep_options $(_ignore_case) -LE "$$require" $$files \
289 && { msg="$$halt" $(_sc_say_and_exit) } || :; \
295 sc_avoid_if_before_free:
296 @$(srcdir)/$(_build-aux)/useless-if-before-free \
297 $(useless_free_options) \
298 $$($(VC_LIST_EXCEPT) | grep -v useless-if-before-free) && \
299 { echo '$(ME): found useless "if" before "free" above' 1>&2; \
302 sc_cast_of_argument_to_free:
303 @prohibit='\<free *\( *\(' halt="don't cast free argument" \
306 sc_cast_of_x_alloc_return_value:
307 @prohibit='\*\) *x(m|c|re)alloc\>' \
308 halt="don't cast x*alloc return value" \
311 sc_cast_of_alloca_return_value:
312 @prohibit='\*\) *alloca\>' \
313 halt="don't cast alloca return value" \
318 halt='found SPACE-TAB sequence; remove the SPACE' \
321 # Don't use *scanf or the old ato* functions in "real" code.
322 # They provide no error checking mechanism.
323 # Instead, use strto* functions.
324 sc_prohibit_atoi_atof:
325 @prohibit='\<([fs]?scanf|ato([filq]|ll)) *\(' \
326 halt='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q' \
329 # Use STREQ rather than comparing strcmp == 0, or != 0.
332 @prohibit='! *strcmp *\(|\<$(sp_) *[!=]=|[!=]= *$(sp_)' \
333 exclude=':# *define STRN?EQ\(' \
334 halt='$(ME): replace strcmp calls above with STREQ/STRNEQ' \
337 # Really. You don't want to use this function.
338 # It may fail to NUL-terminate the destination,
339 # and always NUL-pads out to the specified length.
341 @prohibit='\<strncpy *\(' \
342 halt='do not use strncpy, period' \
345 # Pass EXIT_*, not number, to usage, exit, and error (when exiting)
346 # Convert all uses automatically, via these two commands:
347 # git grep -l '\<exit *(1)' \
348 # | grep -vEf .x-sc_prohibit_magic_number_exit \
349 # | xargs --no-run-if-empty \
350 # perl -pi -e 's/(^|[^.])\b(exit ?)\(1\)/$1$2(EXIT_FAILURE)/'
351 # git grep -l '\<exit *(0)' \
352 # | grep -vEf .x-sc_prohibit_magic_number_exit \
353 # | xargs --no-run-if-empty \
354 # perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
355 sc_prohibit_magic_number_exit:
356 @prohibit='(^|[^.])\<(usage|exit|error) ?\(-?[0-9]+[,)]' \
357 exclude='error ?\(0,' \
358 halt='use EXIT_* values rather than magic number' \
361 # Using EXIT_SUCCESS as the first argument to error is misleading,
362 # since when that parameter is 0, error does not exit. Use '0' instead.
363 sc_error_exit_success:
364 @prohibit='error *\(EXIT_SUCCESS,' \
365 in_vc_files='\.[chly]$$' \
366 halt='found error (EXIT_SUCCESS' \
369 # "FATAL:" should be fully upper-cased in error messages
370 # "WARNING:" should be fully upper-cased, or fully lower-cased
371 sc_error_message_warn_fatal:
372 @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
373 | grep -E '"Warning|"Fatal|"fatal' && \
374 { echo '$(ME): use FATAL, WARNING or warning' 1>&2; \
377 # Error messages should not start with a capital letter
378 sc_error_message_uppercase:
379 @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
381 | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' && \
382 { echo '$(ME): found capitalized error message' 1>&2; \
385 # Error messages should not end with a period
386 sc_error_message_period:
387 @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
388 | grep -E '[^."]\."' && \
389 { echo '$(ME): found error message ending in period' 1>&2; \
393 @prohibit=file''system \
395 halt='found use of "file''system"; spell it "file system"' \
398 # Don't use cpp tests of this symbol. All code assumes config.h is included.
399 sc_prohibit_have_config_h:
400 @prohibit='^# *if.*HAVE''_CONFIG_H' \
401 halt='found use of HAVE''_CONFIG_H; remove' \
404 # Nearly all .c files must include <config.h>. However, we also permit this
405 # via inclusion of a package-specific header, if cfg.mk specified one.
406 # config_h_header must be suitable for grep -E.
407 config_h_header ?= <config\.h>
409 @require='^# *include $(config_h_header)' \
410 in_vc_files='\.c$$' \
411 halt='the above files do not include <config.h>' \
414 # You must include <config.h> before including any other header file.
415 # This can possibly be via a package-specific header, if given by cfg.mk.
416 sc_require_config_h_first:
417 @if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then \
419 for i in $$($(VC_LIST_EXCEPT) | grep '\.c$$'); do \
420 grep '^# *include\>' $$i | sed 1q \
421 | grep -E '^# *include $(config_h_header)' > /dev/null \
422 || { echo $$i; fail=1; }; \
425 { echo '$(ME): the above files include some other header' \
426 'before <config.h>' 1>&2; exit 1; } || :; \
430 sc_prohibit_HAVE_MBRTOWC:
431 @prohibit='\bHAVE_MBRTOWC\b' \
432 halt="do not use $$prohibit; it is always defined" \
435 # To use this "command" macro, you must first define two shell variables:
436 # h: the header name, with no enclosing <> or ""
437 # re: a regular expression that matches IFF something provided by $h is used.
438 define _sc_header_without_use
439 dummy=; : so we do not need a semicolon before each use; \
440 h_esc=`echo '[<"]'"$$h"'[">]'|sed 's/\./\\\\./g'`; \
441 if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then \
442 files=$$(grep -l '^# *include '"$$h_esc" \
443 $$($(VC_LIST_EXCEPT) | grep '\.c$$')) && \
444 grep -LE "$$re" $$files | grep . && \
445 { echo "$(ME): the above files include $$h but don't use it" \
446 1>&2; exit 1; } || :; \
451 # Prohibit the inclusion of assert.h without an actual use of assert.
452 sc_prohibit_assert_without_use:
453 @h='assert.h' re='\<assert *\(' $(_sc_header_without_use)
455 # Prohibit the inclusion of close-stream.h without an actual use.
456 sc_prohibit_close_stream_without_use:
457 @h='close-stream.h' re='\<close_stream *\(' $(_sc_header_without_use)
459 # Prohibit the inclusion of getopt.h without an actual use.
460 sc_prohibit_getopt_without_use:
461 @h='getopt.h' re='\<getopt(_long)? *\(' $(_sc_header_without_use)
463 # Don't include quotearg.h unless you use one of its functions.
464 sc_prohibit_quotearg_without_use:
465 @h='quotearg.h' re='\<quotearg(_[^ ]+)? *\(' $(_sc_header_without_use)
467 # Don't include quote.h unless you use one of its functions.
468 sc_prohibit_quote_without_use:
469 @h='quote.h' re='\<quote((_n)? *\(|_quoting_options\>)' \
470 $(_sc_header_without_use)
472 # Don't include this header unless you use one of its functions.
473 sc_prohibit_long_options_without_use:
474 @h='long-options.h' re='\<parse_long_options *\(' \
475 $(_sc_header_without_use)
477 # Don't include this header unless you use one of its functions.
478 sc_prohibit_inttostr_without_use:
479 @h='inttostr.h' re='\<(off|[iu]max|uint)tostr *\(' \
480 $(_sc_header_without_use)
482 # Don't include this header unless you use one of its functions.
483 sc_prohibit_ignore_value_without_use:
484 @h='ignore-value.h' re='\<ignore_(value|ptr) *\(' \
485 $(_sc_header_without_use)
487 # Don't include this header unless you use one of its functions.
488 sc_prohibit_error_without_use:
490 re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
491 $(_sc_header_without_use)
493 # Don't include xalloc.h unless you use one of its functions.
494 # Consider these symbols:
495 # perl -lne '/^# *define (\w+)\(/ and print $1' lib/xalloc.h|grep -v '^__';
496 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/xalloc.h
497 # Divide into two sets on case, and filter each through this:
498 # | sort | perl -MRegexp::Assemble -le \
499 # 'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
500 # Note this was produced by the above:
502 #x(((2n?)?re|c(har)?|n(re|m)|z)alloc|alloc_(oversized|die)|m(alloc|emdup)|strdup)
503 # But we can do better, in at least two ways:
504 # 1) take advantage of two "dup"-suffixed strings:
505 # x(((2n?)?re|c(har)?|n(re|m)|[mz])alloc|alloc_(oversized|die)|(mem|str)dup)
506 # 2) notice that "c(har)?|[mz]" is equivalent to the shorter and more readable
508 # x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
509 _xa1 = x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
510 _xa2 = X([CZ]|N?M)ALLOC
511 sc_prohibit_xalloc_without_use:
513 re='\<($(_xa1)|$(_xa2)) *\('\
514 $(_sc_header_without_use)
516 # Extract function names:
517 # perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/hash.h
519 clear|delete|free|get_(first|next)|insert|lookup|print_statistics|reset_tuning
520 _hash_fn = \<($(_hash_re)) *\(
521 _hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
522 sc_prohibit_hash_without_use:
524 re='$(_hash_fn)|$(_hash_struct)'\
525 $(_sc_header_without_use)
527 sc_prohibit_cloexec_without_use:
528 @h='cloexec.h' re='\<(set_cloexec_flag|dup_cloexec) *\(' \
529 $(_sc_header_without_use)
531 sc_prohibit_posixver_without_use:
532 @h='posixver.h' re='\<posix2_version *\(' $(_sc_header_without_use)
534 sc_prohibit_same_without_use:
535 @h='same.h' re='\<same_name *\(' $(_sc_header_without_use)
537 sc_prohibit_hash_pjw_without_use:
540 $(_sc_header_without_use)
542 sc_prohibit_safe_read_without_use:
543 @h='safe-read.h' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
544 $(_sc_header_without_use)
546 sc_prohibit_argmatch_without_use:
548 re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<(invalid_arg|argmatch(_exit_fn|_(in)?valid)?) *\()' \
549 $(_sc_header_without_use)
551 sc_prohibit_canonicalize_without_use:
552 @h='canonicalize.h' \
553 re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode|file_name)' \
554 $(_sc_header_without_use)
556 sc_prohibit_root_dev_ino_without_use:
557 @h='root-dev-ino.h' \
558 re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
559 $(_sc_header_without_use)
561 sc_prohibit_openat_without_use:
563 re='\<(openat_(permissive|needs_fchdir|(save|restore)_fail)|l?(stat|ch(own|mod))at|(euid)?accessat)\>' \
564 $(_sc_header_without_use)
566 # Prohibit the inclusion of c-ctype.h without an actual use.
567 ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
568 |isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
569 sc_prohibit_c_ctype_without_use:
570 @h='c-ctype.h' re='\<c_($(ctype_re)) *\(' \
571 $(_sc_header_without_use)
574 _sp = $(_empty) $(_empty)
575 # The following list was generated by running:
576 # man signal.h|col -b|perl -ne '/bsd_signal.*;/.../sigwaitinfo.*;/ and print' \
577 # | perl -lne '/^\s+(?:int|void).*?(\w+).*/ and print $1' | fmt
579 bsd_signal kill killpg pthread_kill pthread_sigmask raise sigaction \
580 sigaddset sigaltstack sigdelset sigemptyset sigfillset sighold sigignore \
581 siginterrupt sigismember signal sigpause sigpending sigprocmask sigqueue \
582 sigrelse sigset sigsuspend sigtimedwait sigwait sigwaitinfo
583 _sig_function_re = $(subst $(_sp),|,$(strip $(_sig_functions)))
584 # The following were extracted from "man signal.h" manually.
585 _sig_types_and_consts = \
586 MINSIGSTKSZ SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK \
587 SA_RESETHAND SA_RESTART SA_SIGINFO SIGEV_NONE SIGEV_SIGNAL \
588 SIGEV_THREAD SIGSTKSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SS_DISABLE \
589 SS_ONSTACK mcontext_t pid_t sig_atomic_t sigevent siginfo_t sigset_t \
590 sigstack sigval stack_t ucontext_t
591 # generated via this:
592 # perl -lne '/^#ifdef (SIG\w+)/ and print $1' lib/sig2str.c|sort -u|fmt -70
594 SIGABRT SIGALRM SIGALRM1 SIGBUS SIGCANCEL SIGCHLD SIGCLD SIGCONT \
595 SIGDANGER SIGDIL SIGEMT SIGFPE SIGFREEZE SIGGRANT SIGHUP SIGILL \
596 SIGINFO SIGINT SIGIO SIGIOT SIGKAP SIGKILL SIGKILLTHR SIGLOST SIGLWP \
597 SIGMIGRATE SIGMSG SIGPHONE SIGPIPE SIGPOLL SIGPRE SIGPROF SIGPWR \
598 SIGQUIT SIGRETRACT SIGSAK SIGSEGV SIGSOUND SIGSTKFLT SIGSTOP SIGSYS \
599 SIGTERM SIGTHAW SIGTRAP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGUSR1 \
600 SIGUSR2 SIGVIRT SIGVTALRM SIGWAITING SIGWINCH SIGWIND SIGWINDOW \
602 _sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
604 # Prohibit the inclusion of signal.h without an actual use.
605 sc_prohibit_signal_without_use:
607 re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>' \
608 $(_sc_header_without_use)
610 # Don't include stdio--.h unless you use one of its functions.
611 sc_prohibit_stdio--_without_use:
612 @h='stdio--.h' re='\<((f(re)?|p)open|tmpfile) *\(' \
613 $(_sc_header_without_use)
615 # Don't include stdio-safer.h unless you use one of its functions.
616 sc_prohibit_stdio-safer_without_use:
617 @h='stdio-safer.h' re='\<((f(re)?|p)open|tmpfile)_safer *\(' \
618 $(_sc_header_without_use)
620 # Prohibit the inclusion of strings.h without a sensible use.
621 # Using the likes of bcmp, bcopy, bzero, index or rindex is not sensible.
622 sc_prohibit_strings_without_use:
624 re='\<(strn?casecmp|ffs(ll)?)\>' \
625 $(_sc_header_without_use)
627 # Get the list of symbol names with this:
628 # perl -lne '/^# *define ([A-Z]\w+)\(/ and print $1' lib/intprops.h|fmt
630 TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT \
631 TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM \
632 INT_BITS_STRLEN_BOUND INT_STRLEN_BOUND INT_BUFSIZE_BOUND \
633 INT_ADD_RANGE_OVERFLOW INT_SUBTRACT_RANGE_OVERFLOW \
634 INT_NEGATE_RANGE_OVERFLOW INT_MULTIPLY_RANGE_OVERFLOW \
635 INT_DIVIDE_RANGE_OVERFLOW INT_REMAINDER_RANGE_OVERFLOW \
636 INT_LEFT_SHIFT_RANGE_OVERFLOW INT_ADD_OVERFLOW INT_SUBTRACT_OVERFLOW \
637 INT_NEGATE_OVERFLOW INT_MULTIPLY_OVERFLOW INT_DIVIDE_OVERFLOW \
638 INT_REMAINDER_OVERFLOW INT_LEFT_SHIFT_OVERFLOW
639 _intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
640 # Prohibit the inclusion of intprops.h without an actual use.
641 sc_prohibit_intprops_without_use:
643 re='\<($(_intprops_syms_re)) *\(' \
644 $(_sc_header_without_use)
646 _stddef_syms_re = NULL|offsetof|ptrdiff_t|size_t|wchar_t
647 # Prohibit the inclusion of stddef.h without an actual use.
648 sc_prohibit_stddef_without_use:
650 re='\<($(_stddef_syms_re))\>' \
651 $(_sc_header_without_use)
653 _de1 = dirfd|(close|(fd)?open|read|rewind|seek|tell)dir(64)?(_r)?
654 _de2 = (versionsort|struct dirent|getdirentries|alphasort|scandir(at)?)(64)?
655 _de3 = MAXNAMLEN|DIR|ino_t|d_ino|d_fileno|d_namlen
656 _dirent_syms_re = $(_de1)|$(_de2)|$(_de3)
657 # Prohibit the inclusion of dirent.h without an actual use.
658 sc_prohibit_dirent_without_use:
660 re='\<($(_dirent_syms_re))\>' \
661 $(_sc_header_without_use)
663 # Prohibit the inclusion of verify.h without an actual use.
664 sc_prohibit_verify_without_use:
666 re='\<(verify(true|expr)?|static_assert) *\(' \
667 $(_sc_header_without_use)
669 # Don't include xfreopen.h unless you use one of its functions.
670 sc_prohibit_xfreopen_without_use:
671 @h='xfreopen.h' re='\<xfreopen *\(' $(_sc_header_without_use)
674 @prohibit='\<(HAVE''_FCNTL_H|O''_NDELAY)\>' \
675 halt='do not use HAVE''_FCNTL_H or O'_NDELAY \
678 # FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
680 # Each nonempty ChangeLog line must start with a year number, or a TAB.
682 @prohibit='^[^12 ]' \
683 in_vc_files='^ChangeLog$$' \
684 halt='found unexpected prefix in a ChangeLog' \
687 # Ensure that each .c file containing a "main" function also
688 # calls set_program_name.
690 @require='set_program_name *\(m?argv\[0\]\);' \
691 in_vc_files='\.c$$' \
692 containing='\<main *(' \
693 halt='the above files do not call set_program_name' \
696 # Ensure that each .c file containing a "main" function also
697 # calls bindtextdomain.
699 @require='bindtextdomain *\(' \
700 in_vc_files='\.c$$' \
701 containing='\<main *(' \
702 halt='the above files do not call bindtextdomain' \
705 # Require that the final line of each test-lib.sh-using test be this one:
707 # Note: this test requires GNU grep's --label= option.
708 Exit_witness_file ?= tests/test-lib.sh
709 Exit_base := $(notdir $(Exit_witness_file))
710 sc_require_test_exit_idiom:
711 @if test -f $(srcdir)/$(Exit_witness_file); then \
713 for i in $$(grep -l -F 'srcdir/$(Exit_base)' \
714 $$($(VC_LIST) tests)); do \
715 tail -n1 $$i | grep '^Exit .' > /dev/null \
716 && : || { die=1; echo $$i; } \
719 { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
720 echo 1>&2 'Exit something'; \
726 halt='found trailing blank(s)' \
729 # Match lines like the following, but where there is only one space
730 # between the options and the description:
731 # -D, --all-repeated[=delimit-method] print all duplicate lines\n
732 longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
733 sc_two_space_separator_in_usage:
734 @prohibit='^ *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$' \
735 halt='help2man requires at least two spaces between an option and its description'\
738 # A regexp matching function names like "error" that may be used
739 # to emit translatable messages.
740 _gl_translatable_diag_func_re ?= error
742 # Look for diagnostics that aren't marked for translation.
743 # This won't find any for which error's format string is on a separate line.
744 sc_unmarked_diagnostics:
745 @prohibit='\<$(_gl_translatable_diag_func_re) *\([^"]*"[^"]*[a-z]{3}' \
746 exclude='(_|ngettext ?)\(' \
747 halt='$(ME): found unmarked diagnostic(s)' \
750 # Avoid useless parentheses like those in this example:
751 # #if defined (SYMBOL) || defined (SYM2)
752 sc_useless_cpp_parens:
753 @prohibit='^# *if .*defined *\(' \
754 halt='found useless parentheses in cpp directive' \
757 # List headers for which HAVE_HEADER_H is always true, assuming you are
758 # using the appropriate gnulib module. CAUTION: for each "unnecessary"
759 # #if HAVE_HEADER_H that you remove, be sure that your project explicitly
760 # requires the gnulib module that guarantees the usability of that header.
761 gl_assured_headers_ = \
762 cd $(gnulib_dir)/lib && echo *.in.h|sed 's/\.in\.h//g'
764 # Convert the list of names to upper case, and replace each space with "|".
765 az_ = abcdefghijklmnopqrstuvwxyz
766 AZ_ = ABCDEFGHIJKLMNOPQRSTUVWXYZ
767 gl_header_upper_case_or_ = \
768 $$($(gl_assured_headers_) \
769 | tr $(az_)/.- $(AZ_)___ \
772 sc_prohibit_always_true_header_tests:
773 @or=$(gl_header_upper_case_or_); \
774 re="HAVE_($$or)_H"; \
775 prohibit='\<'"$$re"'\>' \
776 halt=$$(printf '%s\n' \
777 'do not test the above HAVE_<header>_H symbol(s);' \
778 ' with the corresponding gnulib module, they are always true') \
781 sc_prohibit_defined_have_decl_tests:
782 @prohibit='#[ ]*if(n?def|.*\<defined)\>[ (]+HAVE_DECL_' \
783 halt='$(ME): HAVE_DECL macros are always defined' \
786 # ==================================================================
787 gl_other_headers_ ?= \
792 # Perl -lne code to extract "significant" cpp-defined symbols from a
793 # gnulib header file, eliminating a few common false-positives.
794 # The exempted names below are defined only conditionally in gnulib,
795 # and hence sometimes must/may be defined in application code.
796 gl_extract_significant_defines_ = \
797 /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/\
798 && $$2 !~ /(?:rpl_|_used_without_)/\
799 && $$1 !~ /^(?:NSIG|ENODATA)$$/\
800 && $$1 !~ /^(?:SA_RESETHAND|SA_RESTART)$$/\
803 # Create a list of regular expressions matching the names
804 # of macros that are guaranteed to be defined by parts of gnulib.
806 gen_h=$(gl_generated_headers_); \
807 (cd $(gnulib_dir)/lib; \
808 for f in *.in.h $(gl_other_headers_); do \
810 && perl -lne '$(gl_extract_significant_defines_)' $$f; \
813 | sed 's/^/^ *# *(define|undef) */;s/$$/\\>/'
816 # Don't define macros that we already get from gnulib header files.
817 sc_prohibit_always-defined_macros:
818 @if test -d $(gnulib_dir); then \
819 case $$(echo all: | grep -l -f - Makefile) in Makefile);; *) \
820 echo '$(ME): skipping $@: you lack GNU grep' 1>&2; exit 0;; \
822 $(def_sym_regex) | grep -E -f - $$($(VC_LIST_EXCEPT)) \
823 && { echo '$(ME): define the above via some gnulib .h file' \
824 1>&2; exit 1; } || :; \
826 # ==================================================================
828 # Prohibit checked in backup files.
829 sc_prohibit_backup_files:
830 @$(VC_LIST) | grep '~$$' && \
831 { echo '$(ME): found version controlled backup file' 1>&2; \
834 # Require the latest GPL.
836 @prohibit='either ''version [^3]' \
837 halt='GPL vN, N!=3' \
840 # Require the latest GFDL. Two regexp, since some .texi files end up
841 # line wrapping between 'Free Documentation License,' and 'Version'.
842 _GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
844 @prohibit='$(_GFDL_regexp)' \
845 halt='GFDL vN, N!=3' \
848 # Don't use Texinfo's @acronym{}.
849 # http://lists.gnu.org/archive/html/bug-gnulib/2010-03/msg00321.html
850 texinfo_suffix_re_ ?= \.(txi|texi(nfo)?)$$
852 @prohibit='@acronym\{' \
853 in_vc_files='$(texinfo_suffix_re_)' \
854 halt='found use of Texinfo @acronym{}' \
858 Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State
860 sc_prohibit_cvs_keyword:
861 @prohibit='\$$($(cvs_keywords))\$$' \
862 halt='do not use CVS keyword expansion' \
865 # This Perl code is slightly obfuscated. Not only is each "$" doubled
866 # because it's in a Makefile, but the $$c's are comments; we cannot
867 # use "#" due to the way the script ends up concatenated onto one line.
868 # It would be much more concise, and would produce better output (including
869 # counts) if written as:
870 # perl -ln -0777 -e '/\n(\n+)$/ and print "$ARGV: ".length $1' ...
871 # but that would be far less efficient, reading the entire contents
872 # of each file, rather than just the last two bytes of each.
873 # In addition, while the code below detects both blank lines and a missing
874 # newline at EOF, the above detects only the former.
876 # This is a perl script that is expected to be the single-quoted argument
877 # to a command-line "-le". The remaining arguments are file names.
878 # Print the name of each file that does not end in exactly one newline byte.
879 # I.e., warn if there are blank lines (2 or more newlines), or if the
880 # last byte is not a newline. However, currently we don't complain
881 # about any file that contains exactly one byte.
882 # Exit nonzero if at least one such file is found, otherwise, exit 0.
883 # Warn about, but otherwise ignore open failure. Ignore seek/read failure.
885 # Use this if you want to remove trailing empty lines from selected files:
886 # perl -pi -0777 -e 's/\n\n+$/\n/' files...
888 require_exactly_one_NL_at_EOF_ = \
889 foreach my $$f (@ARGV) \
891 open F, "<", $$f or (warn "failed to open $$f: $$!\n"), next; \
892 my $$p = sysseek (F, -2, 2); \
893 my $$c = "seek failure probably means file has < 2 bytes; ignore"; \
894 my $$last_two_bytes; \
895 defined $$p and $$p = sysread F, $$last_two_bytes, 2; \
897 $$c = "ignore read failure"; \
898 $$p && ($$last_two_bytes eq "\n\n" \
899 || substr ($$last_two_bytes,1) ne "\n") \
900 and (print $$f), $$fail=1; \
902 END { exit defined $$fail }
903 sc_prohibit_empty_lines_at_EOF:
904 @perl -le '$(require_exactly_one_NL_at_EOF_)' $$($(VC_LIST_EXCEPT)) \
905 || { echo '$(ME): empty line(s) or no newline at EOF' \
908 # Make sure we don't use st_blocks. Use ST_NBLOCKS instead.
909 # This is a bit of a kludge, since it prevents use of the string
910 # even in comments, but for now it does the job with no false positives.
911 sc_prohibit_stat_st_blocks:
912 @prohibit='[.>]st_blocks' \
913 halt='do not use st_blocks; use ST_NBLOCKS' \
916 # Make sure we don't define any S_IS* macros in src/*.c files.
917 # They're already defined via gnulib's sys/stat.h replacement.
918 sc_prohibit_S_IS_definition:
919 @prohibit='^ *# *define *S_IS' \
920 halt='do not define S_IS* macros; include <sys/stat.h>' \
923 # Perl block to convert a match to FILE_NAME:LINENO:TEST,
924 # that is shared by two definitions below.
925 perl_filename_lineno_text_ = \
927 -e ' $$n = ($$` =~ tr/\n/\n/ + 1);' \
928 -e ' ($$v = $$&) =~ s/\n/\\n/g;' \
929 -e ' print "$$ARGV:$$n:$$v\n";' \
932 prohibit_doubled_word_RE_ ?= \
933 /\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b/gims
934 prohibit_doubled_word_ = \
935 -e 'while ($(prohibit_doubled_word_RE_))' \
936 $(perl_filename_lineno_text_)
938 # Define this to a regular expression that matches
939 # any filename:dd:match lines you want to ignore.
940 # The default is to ignore no matches.
941 ignore_doubled_word_match_RE_ ?= ^$$
943 sc_prohibit_doubled_word:
944 @perl -n -0777 $(prohibit_doubled_word_) $$($(VC_LIST_EXCEPT)) \
945 | grep -vE '$(ignore_doubled_word_match_RE_)' \
946 | grep . && { echo '$(ME): doubled words' 1>&2; exit 1; } || :
948 # A regular expression matching undesirable combinations of words like
949 # "can not"; this matches them even when the two words appear on different
950 # lines, but not when there is an intervening delimiter like "#" or "*".
951 # Similarly undesirable, "See @xref{...}", since an @xref should start
952 # a sentence. Explicitly prohibit any prefix of "see" or "also".
953 # Also prohibit a prefix matching "\w+ +".
954 # @pxref gets the same see/also treatment and should be parenthesized;
955 # presume it must *not* start a sentence.
956 bad_xref_re_ ?= (?:[\w,:;] +|(?:see|also)\s+)\@xref\{
957 bad_pxref_re_ ?= (?:[.!?]|(?:see|also))\s+\@pxref\{
958 prohibit_undesirable_word_seq_RE_ ?= \
959 /(?:\bcan\s+not\b|$(bad_xref_re_)|$(bad_pxref_re_))/gims
960 prohibit_undesirable_word_seq_ = \
961 -e 'while ($(prohibit_undesirable_word_seq_RE_))' \
962 $(perl_filename_lineno_text_)
963 # Define this to a regular expression that matches
964 # any filename:dd:match lines you want to ignore.
965 # The default is to ignore no matches.
966 ignore_undesirable_word_sequence_RE_ ?= ^$$
968 sc_prohibit_undesirable_word_seq:
969 @perl -n -0777 $(prohibit_undesirable_word_seq_) \
970 $$($(VC_LIST_EXCEPT)) \
971 | grep -vE '$(ignore_undesirable_word_sequence_RE_)' | grep . \
972 && { echo '$(ME): undesirable word sequence' >&2; exit 1; } || :
974 _ptm1 = use "test C1 && test C2", not "test C1 -''a C2"
975 _ptm2 = use "test C1 || test C2", not "test C1 -''o C2"
976 # Using test's -a and -o operators is not portable.
977 # We prefer test over [, since the latter is spelled [[ in configure.ac.
978 sc_prohibit_test_minus_ao:
979 @prohibit='(\<test| \[+) .+ -[ao] ' \
980 halt='$(_ptm1); $(_ptm2)' \
983 # Avoid a test bashism.
984 sc_prohibit_test_double_equal:
985 @prohibit='(\<test| \[+) .+ == ' \
986 containing='#! */bin/[a-z]*sh' \
987 halt='use "test x = x", not "test x =''= x"' \
990 # Each program that uses proper_name_utf8 must link with one of the
991 # ICONV libraries. Otherwise, some ICONV library must appear in LDADD.
992 # The perl -0777 invocation below extracts the possibly-multi-line
993 # definition of LDADD from the appropriate Makefile.am and exits 0
994 # when it contains "ICONV".
995 sc_proper_name_utf8_requires_ICONV:
996 @progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
997 if test "x$$progs" != x; then \
999 for p in $$progs; do \
1000 dir=$$(dirname "$$p"); \
1002 -ne 'exit !(/^LDADD =(.+?[^\\]\n)/ms && $$1 =~ /ICONV/)' \
1003 $$dir/Makefile.am && continue; \
1004 base=$$(basename "$$p" .c); \
1005 grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null \
1006 || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
1008 test $$fail = 1 && \
1009 { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
1013 # Warn about "c0nst struct Foo const foo[]",
1014 # but not about "char const *const foo" or "#define const const".
1016 @prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b' \
1017 halt='redundant "const" in declarations' \
1018 $(_sc_search_regexp)
1020 sc_const_long_option:
1021 @prohibit='^ *static.*struct option ' \
1022 exclude='const struct option|struct option const' \
1023 halt='$(ME): add "const" to the above declarations' \
1024 $(_sc_search_regexp)
1027 $$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p' \
1030 's/^Copyright.+?Free\sSoftware\sFoundation,\sInc\.\n//ms' \
1034 # Ensure that we don't accidentally insert an entry into an old NEWS block.
1036 @if test -f $(srcdir)/NEWS; then \
1037 test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : || \
1038 { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; }; \
1041 # Update the hash stored above. Do this after each release and
1042 # for any corrections to old entries.
1043 update-NEWS-hash: NEWS
1044 perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
1047 # Ensure that we use only the standard $(VAR) notation,
1048 # not @...@ in Makefile.am, now that we can rely on automake
1049 # to emit a definition for each substituted variable.
1050 # However, there is still one case in which @VAR@ use is not just
1051 # legitimate, but actually required: when augmenting an automake-defined
1052 # variable with a prefix. For example, gettext uses this:
1053 # MAKEINFO = env LANG= LC_MESSAGES= LC_ALL= LANGUAGE= @MAKEINFO@
1054 # otherwise, makeinfo would put German or French (current locale)
1055 # navigation hints in the otherwise-English documentation.
1057 # Allow the package to add exceptions via a hook in cfg.mk;
1058 # for example, @PRAGMA_SYSTEM_HEADER@ can be permitted by
1059 # setting this to ' && !/PRAGMA_SYSTEM_HEADER/'.
1060 _makefile_at_at_check_exceptions ?=
1061 sc_makefile_at_at_check:
1062 @perl -ne '/\@\w+\@/' \
1063 -e ' && !/(\w+)\s+=.*\@\1\@$$/' \
1064 -e ''$(_makefile_at_at_check_exceptions) \
1065 -e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}' \
1066 $$($(VC_LIST_EXCEPT) | grep -E '(^|/)(Makefile\.am|[^/]+\.mk)$$') \
1067 && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
1070 $(AM_V_GEN)if sed -n $(news-check-lines-spec)p $< \
1071 | grep -E $(news-check-regexp) >/dev/null; then \
1074 echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2; \
1078 sc_makefile_TAB_only_indentation:
1079 @prohibit='^ [ ]{8}' \
1080 in_vc_files='akefile|\.mk$$' \
1081 halt='found TAB-8-space indentation' \
1082 $(_sc_search_regexp)
1085 @prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]' \
1086 in_vc_files='(^configure\.ac|\.m4)$$' \
1087 halt='quote the first arg to AC_DEF*' \
1088 $(_sc_search_regexp)
1090 fix_po_file_diag = \
1091 'you have changed the set of files with translatable diagnostics;\n\
1092 apply the above patch\n'
1094 # Verify that all source files using _() are listed in po/POTFILES.in.
1095 po_file ?= $(srcdir)/po/POTFILES.in
1096 generated_files ?= $(srcdir)/lib/*.[ch]
1098 @if test -f $(po_file); then \
1099 grep -E -v '^(#|$$)' $(po_file) \
1100 | grep -v '^src/false\.c$$' | sort > $@-1; \
1102 for file in $$($(VC_LIST_EXCEPT)) $(generated_files); do \
1103 test -r $$file || continue; \
1105 *.m4|*.mk) continue ;; \
1111 base=`expr " $$file" : ' \(.*\)\..'`; \
1112 { test -f $$base.l || test -f $$base.y; } && continue;; \
1114 files="$$files $$file"; \
1116 grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files \
1117 | sed 's|^$(_dot_escaped_srcdir)/||' | sort -u > $@-2; \
1118 diff -u -L $(po_file) -L $(po_file) $@-1 $@-2 \
1119 || { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; }; \
1123 # Sometimes it is useful to change the PATH environment variable
1124 # in Makefiles. When doing so, it's better not to use the Unix-centric
1125 # path separator of ':', but rather the automake-provided '$(PATH_SEPARATOR)'.
1126 msg = '$(ME): Do not use ":" above; use $$(PATH_SEPARATOR) instead'
1127 sc_makefile_path_separator_check:
1128 @prohibit='PATH[=].*:' \
1129 in_vc_files='akefile|\.mk$$' \
1131 $(_sc_search_regexp)
1133 # Check that 'make alpha' will not fail at the end of the process,
1134 # i.e., when pkg-M.N.tar.xz already exists (either in "." or in ../release)
1137 if test -d $(release_archive_dir); then \
1138 for file in $(DIST_ARCHIVES); do \
1139 for p in ./ $(release_archive_dir)/; do \
1140 test -e $$p$$file || continue; \
1142 || { echo ERROR: $$p$$file is not writable; fail=1; }; \
1145 test "$$fail" && exit 1 || : ; \
1149 v_etc_file = $(gnulib_dir)/lib/version-etc.c
1150 sample-test = tests/sample-test
1151 texi = doc/$(PACKAGE).texi
1152 # Make sure that the copyright date in $(v_etc_file) is up to date.
1153 # Do the same for the $(sample-test) and the main doc/.texi file.
1155 @require='enum { COPYRIGHT_YEAR = '$$(date +%Y)' };' \
1156 in_files=$(v_etc_file) \
1157 halt='out of date copyright in $(v_etc_file); update it' \
1158 $(_sc_search_regexp)
1159 @require='# Copyright \(C\) '$$(date +%Y)' Free' \
1160 in_vc_files=$(sample-test) \
1161 halt='out of date copyright in $(sample-test); update it' \
1162 $(_sc_search_regexp)
1163 @require='Copyright @copyright\{\} .*'$$(date +%Y)' Free' \
1164 in_vc_files=$(texi) \
1165 halt='out of date copyright in $(texi); update it' \
1166 $(_sc_search_regexp)
1168 # If tests/help-version exists and seems to be new enough, assume that its
1169 # use of init.sh and path_prepend_ is correct, and ensure that every other
1170 # use of init.sh is identical.
1171 # This is useful because help-version cross-checks prog --version
1172 # with $(VERSION), which verifies that its path_prepend_ invocation
1173 # sets PATH correctly. This is an inexpensive way to ensure that
1174 # the other init.sh-using tests also get it right.
1175 _hv_file ?= $(srcdir)/tests/help-version
1176 _hv_regex_weak ?= ^ *\. .*/init\.sh"
1177 # Fix syntax-highlighters "
1178 _hv_regex_strong ?= ^ *\. "\$${srcdir=\.}/init\.sh"
1179 sc_cross_check_PATH_usage_in_tests:
1180 @if test -f $(_hv_file); then \
1181 grep -l 'VERSION mismatch' $(_hv_file) >/dev/null \
1182 || { echo "$@: skipped: no such file: $(_hv_file)" 1>&2; \
1184 grep -lE '$(_hv_regex_strong)' $(_hv_file) >/dev/null \
1185 || { echo "$@: $(_hv_file) lacks conforming use of init.sh" 1>&2; \
1187 good=$$(grep -E '$(_hv_regex_strong)' $(_hv_file)); \
1188 grep -LFx "$$good" \
1189 $$(grep -lE '$(_hv_regex_weak)' $$($(VC_LIST_EXCEPT))) \
1191 { echo "$(ME): the above files use path_prepend_ inconsistently" \
1192 1>&2; exit 1; } || :; \
1195 # BRE regex of file contents to identify a test script.
1196 _test_script_regex ?= \<init\.sh\>
1198 # In tests, use "compare expected actual", not the reverse.
1199 sc_prohibit_reversed_compare_failure:
1200 @prohibit='\<compare [^ ]+ ([^ ]*exp|/dev/null)' \
1201 containing='$(_test_script_regex)' \
1202 halt='reversed compare arguments' \
1203 $(_sc_search_regexp)
1205 # #if HAVE_... will evaluate to false for any non numeric string.
1206 # That would be flagged by using -Wundef, however gnulib currently
1207 # tests many undefined macros, and so we can't enable that option.
1208 # So at least preclude common boolean strings as macro values.
1210 @prohibit='^#define.*(yes|no|true|false)$$' \
1211 in_files='$(CONFIG_INCLUDE)' \
1212 halt='Use 0 or 1 for macro values' \
1213 $(_sc_search_regexp)
1215 # Even if you use pathmax.h to guarantee that PATH_MAX is defined, it might
1216 # not be constant, or might overflow a stack. In general, use PATH_MAX as
1217 # a limit, not an array or alloca size.
1218 sc_prohibit_path_max_allocation:
1219 @prohibit='(\balloca *\([^)]*|\[[^]]*)PATH_MAX' \
1220 halt='Avoid stack allocations of size PATH_MAX' \
1221 $(_sc_search_regexp)
1223 sc_vulnerable_makefile_CVE-2009-4029:
1224 @prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
1225 in_files=(^\|/)Makefile\\.in$$ \
1226 halt=$$(printf '%s\n' \
1227 'the above files are vulnerable; beware of running' \
1228 ' "make dist*" rules, and upgrade to fixed automake' \
1229 ' see http://bugzilla.redhat.com/542609 for details') \
1230 $(_sc_search_regexp)
1232 sc_vulnerable_makefile_CVE-2012-3386:
1233 @prohibit='chmod a\+w \$$\(distdir\)' \
1234 in_files=(^\|/)Makefile\\.in$$ \
1235 halt=$$(printf '%s\n' \
1236 'the above files are vulnerable; beware of running' \
1237 ' "make distcheck", and upgrade to fixed automake' \
1238 ' see http://bugzilla.redhat.com/CVE-2012-3386 for details') \
1239 $(_sc_search_regexp)
1242 $(AM_V_GEN)(unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
1243 $(AM_V_at)if test -s vc-diffs; then \
1245 echo "Some files are locally modified:" 1>&2; \
1251 rel-files = $(DIST_ARCHIVES)
1253 gnulib_dir ?= $(srcdir)/gnulib
1254 gnulib-version = $$(cd $(gnulib_dir) && git describe)
1255 bootstrap-tools ?= autoconf,automake,gnulib
1257 # If it's not already specified, derive the GPG key ID from
1258 # the signed tag we've just applied to mark this release.
1261 && git cat-file tag v$(VERSION) \
1262 | gpgv --status-fd 1 --keyring /dev/null - - 2>/dev/null \
1263 | awk '/^\[GNUPG:\] ERRSIG / {print $$3; exit}')
1265 translation_project_ ?= coordinator@translationproject.org
1267 # Make info-gnu the default only for a stable release.
1268 ifeq ($(RELEASE_TYPE),stable)
1269 announcement_Cc_ ?= $(translation_project_), $(PACKAGE_BUGREPORT)
1270 announcement_mail_headers_ ?= \
1271 To: info-gnu@gnu.org \
1272 Cc: $(announcement_Cc_) \
1273 Mail-Followup-To: $(PACKAGE_BUGREPORT)
1275 announcement_Cc_ ?= $(translation_project_)
1276 announcement_mail_headers_ ?= \
1277 To: $(PACKAGE_BUGREPORT) \
1278 Cc: $(announcement_Cc_)
1281 announcement: NEWS ChangeLog $(rel-files)
1282 $(AM_V_GEN)$(srcdir)/$(_build-aux)/announce-gen \
1283 --mail-headers='$(announcement_mail_headers_)' \
1284 --release-type=$(RELEASE_TYPE) \
1285 --package=$(PACKAGE) \
1286 --prev=$(PREV_VERSION) \
1288 --gpg-key-id=$(gpg_key_ID) \
1289 --srcdir=$(srcdir) \
1290 --news=$(srcdir)/NEWS \
1291 --bootstrap-tools=$(bootstrap-tools) \
1292 $$(case ,$(bootstrap-tools), in (*,gnulib,*) \
1293 echo --gnulib-version=$(gnulib-version);; esac) \
1294 --no-print-checksums \
1295 $(addprefix --url-dir=, $(url_dir_list))
1297 .PHONY: release-commit
1299 $(AM_V_GEN)cd $(srcdir) \
1300 && $(_build-aux)/do-release-commit-and-tag \
1301 -C $(abs_builddir) $(RELEASE)
1303 ## ---------------- ##
1304 ## Updating files. ##
1305 ## ---------------- ##
1307 ftp-gnu = ftp://ftp.gnu.org/gnu
1308 www-gnu = http://www.gnu.org
1310 upload_dest_dir_ ?= $(PACKAGE)
1311 emit_upload_commands:
1312 @echo =====================================
1313 @echo =====================================
1314 @echo "$(srcdir)/$(_build-aux)/gnupload $(GNUPLOADFLAGS) \\"
1315 @echo " --to $(gnu_rel_host):$(upload_dest_dir_) \\"
1316 @echo " $(rel-files)"
1317 @echo '# send the ~/announce-$(my_distdir) e-mail'
1318 @echo =====================================
1319 @echo =====================================
1321 define emit-commit-log
1322 printf '%s\n' 'maint: post-release administrivia' '' \
1323 '* NEWS: Add header line for next release.' \
1324 '* .prev-version: Record previous version.' \
1325 '* cfg.mk (old_NEWS_hash): Auto-update.'
1328 .PHONY: no-submodule-changes
1329 no-submodule-changes:
1330 $(AM_V_GEN)if test -d $(srcdir)/.git; then \
1331 diff=$$(cd $(srcdir) && git submodule -q foreach \
1332 git diff-index --name-only HEAD) \
1334 case $$diff in '') ;; \
1335 *) echo '$(ME): submodule files are locally modified:'; \
1336 echo "$$diff"; exit 1;; esac; \
1341 submodule-checks ?= no-submodule-changes public-submodule-commit
1343 # Ensure that each sub-module commit we're using is public.
1344 # Without this, it is too easy to tag and release code that
1345 # cannot be built from a fresh clone.
1346 .PHONY: public-submodule-commit
1347 public-submodule-commit:
1348 $(AM_V_GEN)if test -d $(srcdir)/.git; then \
1350 git submodule --quiet foreach test '$$(git rev-parse $$sha1)' \
1351 = '$$(git merge-base origin $$sha1)' \
1352 || { echo '$(ME): found non-public submodule commit' >&2; \
1357 # This rule has a high enough utility/cost ratio that it should be a
1358 # dependent of "check" by default. However, some of us do occasionally
1359 # commit a temporary change that deliberately points to a non-public
1360 # submodule commit, and want to be able to use rules like "make check".
1361 # In that case, run e.g., "make check gl_public_submodule_commit="
1362 # to disable this test.
1363 gl_public_submodule_commit ?= public-submodule-commit
1364 check: $(gl_public_submodule_commit)
1366 .PHONY: alpha beta stable
1367 ALL_RECURSIVE_TARGETS += alpha beta stable
1368 alpha beta stable: $(local-check) writable-files $(submodule-checks)
1369 $(AM_V_GEN)test $@ = stable \
1370 && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$' \
1371 || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
1373 $(AM_V_at)$(MAKE) vc-diff-check
1374 $(AM_V_at)$(MAKE) news-check
1375 $(AM_V_at)$(MAKE) distcheck
1376 $(AM_V_at)$(MAKE) dist
1377 $(AM_V_at)$(MAKE) $(release-prep-hook) RELEASE_TYPE=$@
1378 $(AM_V_at)$(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
1380 # Override this in cfg.mk if you follow different procedures.
1381 release-prep-hook ?= release-prep
1383 gl_noteworthy_news_ = * Noteworthy changes in release ?.? (????-??-??) [?]
1384 .PHONY: release-prep
1386 $(AM_V_GEN)case $$RELEASE_TYPE in alpha|beta|stable) ;; \
1387 *) echo "invalid RELEASE_TYPE: $$RELEASE_TYPE" 1>&2; exit 1;; esac
1388 $(AM_V_at)$(MAKE) --no-print-directory -s announcement \
1389 > ~/announce-$(my_distdir)
1390 $(AM_V_at)if test -d $(release_archive_dir); then \
1391 ln $(rel-files) $(release_archive_dir); \
1392 chmod a-w $(rel-files); \
1394 $(AM_V_at)echo $(VERSION) > $(prev_version_file)
1395 $(AM_V_at)$(MAKE) update-NEWS-hash
1396 $(AM_V_at)perl -pi \
1397 -e '$$. == 3 and print "$(gl_noteworthy_news_)\n\n\n"' \
1399 $(AM_V_at)msg=$$($(emit-commit-log)) || exit 1; \
1400 cd $(srcdir) && $(VC) commit -m "$$msg" -a
1402 # Override this with e.g., -s $(srcdir)/some_other_name.texi
1403 # if the default $(PACKAGE)-derived name doesn't apply.
1408 $(AM_V_GEN)test -z "$(manual_title)" \
1409 && { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
1410 $(AM_V_at)cd '$(srcdir)/doc'; \
1411 $(SHELL) ../$(_build-aux)/gendocs.sh $(gendocs_options_) \
1412 -o '$(abs_builddir)/doc/manual' \
1413 --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
1414 "$(PACKAGE_NAME) - $(manual_title)"
1415 $(AM_V_at)echo " *** Upload the doc/manual directory to web-cvs."
1417 .PHONY: web-manual-update
1419 $(AM_V_GEN)cd $(srcdir) \
1420 && $(_build-aux)/gnu-web-doc-update -C $(abs_builddir)
1426 $(MAKE) $(AM_MAKEFLAGS) clean
1427 lcov --directory . --zerocounters
1429 COVERAGE_CCOPTS ?= "-g --coverage"
1430 COVERAGE_OUT ?= doc/coverage
1433 $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS)
1434 $(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS) check
1435 mkdir -p $(COVERAGE_OUT)
1436 lcov --directory . --output-file $(COVERAGE_OUT)/$(PACKAGE).info \
1440 genhtml --output-directory $(COVERAGE_OUT) \
1441 $(COVERAGE_OUT)/$(PACKAGE).info \
1442 --highlight --frames --legend \
1443 --title "$(PACKAGE_NAME)"
1445 coverage: init-coverage build-coverage gen-coverage
1447 # Some projects carry local adjustments for gnulib modules via patches in
1448 # a gnulib patch directory whose default name is gl/ (defined in bootstrap
1449 # via local_gl_dir=gl). Those patches become stale as the originals evolve
1450 # in gnulib. Use this rule to refresh any stale patches. It applies each
1451 # patch to the original in $(gnulib_dir) and uses the temporary result to
1452 # generate a fuzz-free .diff file. If you customize the name of your local
1453 # gnulib patch directory via bootstrap.conf, this rule detects that name.
1454 # Run this from a non-VPATH (i.e., srcdir) build directory.
1455 .PHONY: refresh-gnulib-patches
1456 refresh-gnulib-patches:
1458 if test -f bootstrap.conf; then \
1459 t=$$(perl -lne '/^\s*local_gl_dir=(\S+)/ and $$d=$$1;' \
1460 -e 'END{defined $$d and print $$d}' bootstrap.conf); \
1461 test -n "$$t" && gl=$$t; \
1463 for diff in $$(cd $$gl; git ls-files | grep '\.diff$$'); do \
1464 b=$$(printf %s "$$diff"|sed 's/\.diff$$//'); \
1465 VERSION_CONTROL=none \
1466 patch "$(gnulib_dir)/$$b" "$$gl/$$diff" || exit 1; \
1467 ( cd $(gnulib_dir) || exit 1; \
1468 git diff "$$b" > "../$$gl/$$diff"; \
1469 git checkout $$b ) || exit 1; \
1472 # Update gettext files.
1473 PACKAGE ?= $(shell basename $(PWD))
1474 PO_DOMAIN ?= $(PACKAGE)
1475 POURL = http://translationproject.org/latest/$(PO_DOMAIN)/
1478 rm -f $(PODIR)/*.po && \
1479 echo "$(ME): getting translations into po (please ignore the robots.txt ERROR 404)..." && \
1480 wget --no-verbose --directory-prefix $(PODIR) --no-directories --recursive --level 1 --accept .po --accept .po.1 $(POURL) && \
1481 echo 'en@boldquot' > $(PODIR)/LINGUAS && \
1482 echo 'en@quot' >> $(PODIR)/LINGUAS && \
1483 ls $(PODIR)/*.po | sed 's/\.po//;s,$(PODIR)/,,' | sort >> $(PODIR)/LINGUAS
1485 # Running indent once is not idempotent, but running it twice is.
1486 INDENT_SOURCES ?= $(C_SOURCES)
1489 indent $(INDENT_SOURCES)
1490 indent $(INDENT_SOURCES)
1492 # If you want to set UPDATE_COPYRIGHT_* environment variables,
1493 # put the assignments in this variable.
1494 update-copyright-env ?=
1496 # Run this rule once per year (usually early in January)
1497 # to update all FSF copyright year lists in your project.
1498 # If you have an additional project-specific rule,
1499 # add it in cfg.mk along with a line 'update-copyright: prereq'.
1500 # By default, exclude all variants of COPYING; you can also
1501 # add exemptions (such as ChangeLog..* for rotated change logs)
1502 # in the file .x-update-copyright.
1503 .PHONY: update-copyright
1505 $(AM_V_GEN)grep -l -w Copyright \
1506 $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
1507 | $(update-copyright-env) xargs $(srcdir)/$(_build-aux)/$@
1509 # This tight_scope test is skipped with a warning if $(_gl_TS_headers) is not
1510 # overridden and $(_gl_TS_dir)/Makefile.am does not mention noinst_HEADERS.
1512 # NOTE: to override any _gl_TS_* default value, you must
1513 # define the variable(s) using "export" in cfg.mk.
1516 ALL_RECURSIVE_TARGETS += sc_tight_scope
1517 sc_tight_scope: tight-scope.mk
1519 if ! grep '^ *export _gl_TS_headers *=' $(srcdir)/cfg.mk \
1521 && ! grep -w noinst_HEADERS $(srcdir)/$(_gl_TS_dir)/Makefile.am \
1522 > /dev/null 2>&1; then \
1523 echo '$(ME): skipping $@'; \
1525 $(MAKE) -s -C $(_gl_TS_dir) \
1527 -f $(abs_top_srcdir)/cfg.mk \
1528 -f $(abs_top_builddir)/$< \
1535 tight-scope.mk: $(ME)
1537 @perl -ne '/^# TS-start/.../^# TS-end/ and print' $(srcdir)/$(ME) > $@-t
1538 @chmod a=r $@-t && mv $@-t $@
1543 # Most functions should have static scope.
1544 # Any that don't must be marked with 'extern', but 'main'
1545 # and 'usage' are exceptions: they're always extern, but
1546 # do not need to be marked. Symbols matching '__.*' are
1547 # reserved by the compiler, so are automatically excluded below.
1548 _gl_TS_unmarked_extern_functions ?= main usage
1549 _gl_TS_function_match ?= /^(?:$(_gl_TS_extern)) +.*?(\S+) *\(/
1551 # If your project uses a macro like "XTERN", then put
1552 # the following in cfg.mk to override this default:
1553 # export _gl_TS_extern = extern|XTERN
1554 _gl_TS_extern ?= extern
1556 # The second nm|grep checks for file-scope variables with 'extern' scope.
1557 # Without gnulib's progname module, you might put program_name here.
1558 # Symbols matching '__.*' are reserved by the compiler,
1559 # so are automatically excluded below.
1560 _gl_TS_unmarked_extern_vars ?=
1562 # NOTE: the _match variables are perl expressions -- not mere regular
1563 # expressions -- so that you can extend them to match other patterns
1564 # and easily extract matched variable names.
1565 # For example, if your project declares some global variables via
1566 # a macro like this: GLOBAL(type, var_name, initializer), then you
1567 # can override this definition to automatically extract those names:
1568 # export _gl_TS_var_match = \
1569 # /^(?:$(_gl_TS_extern)) .*?\**(\w+)(\[.*?\])?;/ || /\bGLOBAL\(.*?,\s*(.*?),/
1570 _gl_TS_var_match ?= /^(?:$(_gl_TS_extern)) .*?(\w+)(\[.*?\])?;/
1572 # The names of object files in (or relative to) $(_gl_TS_dir).
1573 _gl_TS_obj_files ?= *.$(OBJEXT)
1575 # Files in which to search for the one-line style extern declarations.
1576 # $(_gl_TS_dir)-relative.
1577 _gl_TS_headers ?= $(noinst_HEADERS)
1579 .PHONY: _gl_tight_scope
1580 _gl_tight_scope: $(bin_PROGRAMS)
1581 t=exceptions-$$$$; \
1582 trap 's=$$?; rm -f $$t; exit $$s' 0; \
1583 for sig in 1 2 3 13 15; do \
1584 eval "trap 'v=`expr $$sig + 128`; (exit $$v); exit $$v' $$sig"; \
1586 src=`for f in $(SOURCES); do \
1587 test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`; \
1588 hdr=`for f in $(_gl_TS_headers); do \
1589 test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`; \
1590 ( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_functions); \
1591 grep -h -A1 '^extern .*[^;]$$' $$src \
1592 | grep -vE '^(extern |--)' | sed 's/ .*//'; \
1594 '$(_gl_TS_function_match) and print "^$$1\$$"' $$hdr; \
1595 ) | sort -u > $$t; \
1596 nm -e $(_gl_TS_obj_files) | sed -n 's/.* T //p'|grep -Ev -f $$t \
1597 && { echo the above functions should have static scope >&2; \
1599 ( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_vars); \
1600 perl -lne '$(_gl_TS_var_match) and print "^$$1\$$"' $$hdr *.h \
1601 ) | sort -u > $$t; \
1602 nm -e $(_gl_TS_obj_files) | sed -n 's/.* [BCDGRS] //p' \
1603 | sort -u | grep -Ev -f $$t \
1604 && { echo the above variables should have static scope >&2; \