summaryrefslogtreecommitdiff
path: root/maint.mk
blob: 21782e5162b81bf4e3c343e38e7e9ad8313ab479 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
# -*-Makefile-*-
# This Makefile fragment tries to be general-purpose enough to be
# used by many projects via the gnulib maintainer-makefile module.

## Copyright (C) 2001-2009 Free Software Foundation, Inc.
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program.  If not, see <http://www.gnu.org/licenses/>.

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

# Override this in cfg.mk if you use a non-standard build-aux directory.
build_aux ?= $(srcdir)/build-aux

# Do not save the original name or timestamp in the .tar.gz file.
# Use --rsyncable if available.
gzip_rsyncable := \
  $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null && echo --rsyncable)
GZIP_ENV = '--no-name --best $(gzip_rsyncable)'

# cfg.mk must define the gpg_key_ID used by this package.
GIT = git
VC = $(GIT)
VC-tag = git tag -s -m '$(VERSION)' -u '$(gpg_key_ID)'

VC_LIST = $(build_aux)/vc-list-files -C $(srcdir)

VC_LIST_EXCEPT = \
  $(VC_LIST) | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
	       else grep -Ev "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi

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

PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
VERSION_REGEXP = $(subst .,\.,$(VERSION))
PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))

ifeq ($(VC),$(GIT))
this-vc-tag = v$(VERSION)
this-vc-tag-regexp = v$(VERSION_REGEXP)
else
tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
tag-this-version = $(subst .,_,$(VERSION))
this-vc-tag = $(tag-package)-$(tag-this-version)
this-vc-tag-regexp = $(this-vc-tag)
endif
my_distdir = $(PACKAGE)-$(VERSION)

# Old releases are stored here.
release_archive_dir ?= ../release

# Prevent programs like 'sort' from considering distinct strings to be equal.
# Doing it here saves us from having to set LC_ALL elsewhere in this file.
export LC_ALL = C

## --------------- ##
## Sanity checks.  ##
## --------------- ##

_cfg_mk := $(shell test -f $(srcdir)/cfg.mk && echo '$(srcdir)/cfg.mk')

# Collect the names of rules starting with `sc_'.
syntax-check-rules := $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' \
			$(srcdir)/$(ME) $(_cfg_mk))
.PHONY: $(syntax-check-rules)

local-checks-available = \
  $(syntax-check-rules)
.PHONY: $(local-checks-available)

# Arrange to print the name of each syntax-checking rule just before running it.
$(syntax-check-rules): %: %.m
$(patsubst %, %.m, $(syntax-check-rules)):
	@echo $(patsubst sc_%.m, %, $@)

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

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

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

# By default, _prohibit_regexp does not ignore case.
export ignore_case =
_ignore_case = $$(test -n "$$ignore_case" && echo -i || :)

# There are many rules below that prohibit constructs in this package.
# If the offending construct can be matched with a grep-E-style regexp,
# use this macro.  The shell variables "re" and "msg" must be defined.
define _prohibit_regexp
  dummy=; : so we do not need a semicolon before each use;		\
  test "x$$re" != x || { echo '$(ME): re not defined' 1>&2; exit 1; };	\
  test "x$$msg" != x || { echo '$(ME): msg not defined' 1>&2; exit 1; };\
  grep $(_ignore_case) -nE "$$re" $$($(VC_LIST_EXCEPT)) &&		\
    { echo '$(ME): '"$$msg" 1>&2; exit 1; } || :
endef

sc_avoid_if_before_free:
	@$(build_aux)/useless-if-before-free				\
		$(useless_free_options)					\
	    $$($(VC_LIST_EXCEPT) | grep -v useless-if-before-free) &&	\
	  { echo '$(ME): found useless "if" before "free" above' 1>&2;	\
	    exit 1; } || :

sc_cast_of_argument_to_free:
	@re='\<free *\( *\(' msg='don'\''t cast free argument'		\
	  $(_prohibit_regexp)

sc_cast_of_x_alloc_return_value:
	@re='\*\) *x(m|c|re)alloc\>'					\
	msg='don'\''t cast x*alloc return value'			\
	  $(_prohibit_regexp)

sc_cast_of_alloca_return_value:
	@re='\*\) *alloca\>' msg='don'\''t cast alloca return value'	\
	  $(_prohibit_regexp)

sc_space_tab:
	@re='[ ]	' msg='found SPACE-TAB sequence; remove the SPACE' \
	  $(_prohibit_regexp)

# Don't use *scanf or the old ato* functions in `real' code.
# They provide no error checking mechanism.
# Instead, use strto* functions.
sc_prohibit_atoi_atof:
	@re='\<([fs]?scanf|ato([filq]|ll)) *\('				\
	msg='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q' \
	  $(_prohibit_regexp)

# Use STREQ rather than comparing strcmp == 0, or != 0.
sc_prohibit_strcmp:
	@grep -nE '! *str''cmp *\(|\<str''cmp *\([^)]+\) *=='		\
	    $$($(VC_LIST_EXCEPT))					\
	  | grep -vE ':# *define STREQ\(' &&				\
	  { echo '$(ME): use STREQ in place of the above uses of str''cmp' \
		1>&2; exit 1; } || :

# Using EXIT_SUCCESS as the first argument to error is misleading,
# since when that parameter is 0, error does not exit.  Use `0' instead.
sc_error_exit_success:
	@grep -nE 'error \(EXIT_SUCCESS,'				\
	    $$($(VC_LIST_EXCEPT) | grep -E '\.[chly]$$') &&		\
	  { echo '$(ME): found error (EXIT_SUCCESS' 1>&2; exit 1; } || :

# `FATAL:' should be fully upper-cased in error messages
# `WARNING:' should be fully upper-cased, or fully lower-cased
sc_error_message_warn_fatal:
	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
	    | grep -E '"Warning|"Fatal|"fatal' &&			\
	  { echo '$(ME): use FATAL, WARNING or warning'	1>&2;		\
	    exit 1; } || :

# Error messages should not start with a capital letter
sc_error_message_uppercase:
	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
	    | grep -E '"[A-Z]'						\
	    | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' &&		\
	  { echo '$(ME): found capitalized error message' 1>&2;		\
	    exit 1; } || :

# Error messages should not end with a period
sc_error_message_period:
	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
	    | grep -E '[^."]\."' &&					\
	  { echo '$(ME): found error message ending in period' 1>&2;	\
	    exit 1; } || :

sc_file_system:
	@re=file''system ignore_case=1					\
	msg='found use of "file''system"; spell it "file system"'	\
	  $(_prohibit_regexp)

# Don't use cpp tests of this symbol.  All code assumes config.h is included.
sc_prohibit_have_config_h:
	@grep -n '^# *if.*HAVE''_CONFIG_H' $$($(VC_LIST_EXCEPT)) &&	\
	  { echo '$(ME): found use of HAVE''_CONFIG_H; remove'		\
		1>&2; exit 1; } || :

# Nearly all .c files must include <config.h>.  However, we also permit this
# via inclusion of a package-specific header, if cfg.mk specified one.
# config_h_header must be suitable for grep -E.
config_h_header ?= <config\.h>
sc_require_config_h:
	@if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then	\
	  grep -EL '^# *include $(config_h_header)'			\
		$$($(VC_LIST_EXCEPT) | grep '\.c$$')			\
	      | grep . &&						\
	  { echo '$(ME): the above files do not include <config.h>'	\
		1>&2; exit 1; } || :;					\
	else :;								\
	fi

# You must include <config.h> before including any other header file.
# This can possibly be via a package-specific header, if given by cfg.mk.
sc_require_config_h_first:
	@if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then	\
	  fail=0;							\
	  for i in $$($(VC_LIST_EXCEPT) | grep '\.c$$'); do		\
	    grep '^# *include\>' $$i | sed 1q				\
		| grep -E '^# *include $(config_h_header)' > /dev/null	\
	      || { echo $$i; fail=1; };					\
	  done;								\
	  test $$fail = 1 &&						\
	    { echo '$(ME): the above files include some other header'	\
		'before <config.h>' 1>&2; exit 1; } || :;		\
	else :;								\
	fi

sc_prohibit_HAVE_MBRTOWC:
	@re='\bHAVE_MBRTOWC\b' msg="do not use $$re; it is always defined" \
	  $(_prohibit_regexp)

# To use this "command" macro, you must first define two shell variables:
# h: the header, enclosed in <> or ""
# re: a regular expression that matches IFF something provided by $h is used.
define _header_without_use
  dummy=; : so we do not need a semicolon before each use;		\
  h_esc=`echo "$$h"|sed 's/\./\\\\./g'`;				\
  if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then		\
    files=$$(grep -l '^# *include '"$$h_esc"				\
	     $$($(VC_LIST_EXCEPT) | grep '\.c$$')) &&			\
    grep -LE "$$re" $$files | grep . &&					\
      { echo "$(ME): the above files include $$h but don't use it"	\
	1>&2; exit 1; } || :;						\
  else :;								\
  fi
endef

# Prohibit the inclusion of assert.h without an actual use of assert.
sc_prohibit_assert_without_use:
	@h='<assert.h>' re='\<assert *\(' $(_header_without_use)

# Prohibit the inclusion of getopt.h without an actual use.
sc_prohibit_getopt_without_use:
	@h='<getopt.h>' re='\<getopt(_long)? *\(' $(_header_without_use)

# Don't include quotearg.h unless you use one of its functions.
sc_prohibit_quotearg_without_use:
	@h='"quotearg.h"' re='\<quotearg(_[^ ]+)? *\(' $(_header_without_use)

# Don't include quote.h unless you use one of its functions.
sc_prohibit_quote_without_use:
	@h='"quote.h"' re='\<quote(_n)? *\(' $(_header_without_use)

# Don't include this header unless you use one of its functions.
sc_prohibit_long_options_without_use:
	@h='"long-options.h"' re='\<parse_long_options *\(' \
	  $(_header_without_use)

# Don't include this header unless you use one of its functions.
sc_prohibit_inttostr_without_use:
	@h='"inttostr.h"' re='\<(off|[iu]max|uint)tostr *\(' \
	  $(_header_without_use)

# Don't include this header unless you use one of its functions.
sc_prohibit_error_without_use:
	@h='"error.h"' \
	re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
	  $(_header_without_use)

sc_prohibit_safe_read_without_use:
	@h='"safe-read.h"' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
	  $(_header_without_use)

sc_prohibit_argmatch_without_use:
	@h='"argmatch.h"' \
	re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<argmatch(_exit_fn|_(in)?valid) *\()' \
	  $(_header_without_use)

sc_prohibit_root_dev_ino_without_use:
	@h='"root-dev-ino.h"' \
	re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
	  $(_header_without_use)

# Prohibit the inclusion of c-ctype.h without an actual use.
ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
|isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
sc_prohibit_c_ctype_without_use:
	@h='[<"]c-ctype.h[">]' re='\<c_($(ctype_re)) *\(' $(_header_without_use)

_empty =
_sp = $(_empty) $(_empty)
# The following list was generated by running:
# man signal.h|col -b|perl -ne '/bsd_signal.*;/.../sigwaitinfo.*;/ and print' \
#   | perl -lne '/^\s+(?:int|void).*?(\w+).*/ and print $1' | fmt
_sig_functions = \
  bsd_signal kill killpg pthread_kill pthread_sigmask raise sigaction \
  sigaddset sigaltstack sigdelset sigemptyset sigfillset sighold sigignore \
  siginterrupt sigismember signal sigpause sigpending sigprocmask sigqueue \
  sigrelse sigset sigsuspend sigtimedwait sigwait sigwaitinfo
_sig_function_re = $(subst $(_sp),|,$(strip $(_sig_functions)))
# The following were extracted from "man signal.h" manually.
_sig_types_and_consts =							\
  MINSIGSTKSZ SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK		\
  SA_RESETHAND SA_RESTART SA_SIGINFO SIGEV_NONE SIGEV_SIGNAL		\
  SIGEV_THREAD SIGSTKSZ SIG_BLOCK SIG_SETMASK SIG_UNBLOCK SS_DISABLE	\
  SS_ONSTACK mcontext_t pid_t sig_atomic_t sigevent siginfo_t sigset_t	\
  sigstack sigval stack_t ucontext_t
# generated via this:
# perl -lne '/^#ifdef (SIG\w+)/ and print $1' lib/sig2str.c|sort -u|fmt -70
_sig_names =								\
  SIGABRT SIGALRM SIGALRM1 SIGBUS SIGCANCEL SIGCHLD SIGCLD SIGCONT	\
  SIGDANGER SIGDIL SIGEMT SIGFPE SIGFREEZE SIGGRANT SIGHUP SIGILL	\
  SIGINFO SIGINT SIGIO SIGIOT SIGKAP SIGKILL SIGKILLTHR SIGLOST SIGLWP	\
  SIGMIGRATE SIGMSG SIGPHONE SIGPIPE SIGPOLL SIGPRE SIGPROF SIGPWR	\
  SIGQUIT SIGRETRACT SIGSAK SIGSEGV SIGSOUND SIGSTKFLT SIGSTOP SIGSYS	\
  SIGTERM SIGTHAW SIGTRAP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGUSR1	\
  SIGUSR2 SIGVIRT SIGVTALRM SIGWAITING SIGWINCH SIGWIND SIGWINDOW	\
  SIGXCPU SIGXFSZ
_sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))

# Prohibit the inclusion of signal.h without an actual use.
sc_prohibit_signal_without_use:
	@h='<signal.h>'							\
	re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'		\
	  $(_header_without_use)

sc_obsolete_symbols:
	@re='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'				\
	msg='do not use HAVE''_FCNTL_H or O'_NDELAY			\
	  $(_prohibit_regexp)

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

# Each nonempty ChangeLog line must start with a year number, or a TAB.
sc_changelog:
	@if $(VC_LIST_EXCEPT) | grep -l '^ChangeLog$$' >/dev/null; then	\
	  grep -n '^[^12	]'					\
	    $$($(VC_LIST_EXCEPT) | grep '^ChangeLog$$') &&		\
	  { echo '$(ME): found unexpected prefix in a ChangeLog' 1>&2;	\
	    exit 1; } || :;						\
	fi

# Ensure that each .c file containing a "main" function also
# calls set_program_name.
sc_program_name:
	@if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then	\
	  files=$$(grep -l '^main *(' $$($(VC_LIST_EXCEPT) | grep '\.c$$')); \
	  grep -LE 'set_program_name *\(m?argv\[0\]\);' $$files		\
	      | grep . &&						\
	  { echo '$(ME): the above files do not call set_program_name'	\
		1>&2; exit 1; } || :;					\
	else :;								\
	fi

# Require that the final line of each test-lib.sh-using test be this one:
# Exit $fail
# Note: this test requires GNU grep's --label= option.
Exit_witness_file ?= tests/test-lib.sh
Exit_base := $(notdir $(Exit_witness_file))
sc_require_test_exit_idiom:
	@if test -f $(srcdir)/$(Exit_witness_file); then		\
	  die=0;							\
	  for i in $$(grep -l -F 'srcdir/$(Exit_base)'			\
		$$($(VC_LIST) tests)); do				\
	    tail -n1 $$i | grep '^Exit .' > /dev/null			\
	      && : || { die=1; echo $$i; }				\
	  done;								\
	  test $$die = 1 &&						\
	    { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
	      echo 1>&2 'Exit something';				\
	      exit 1; } || :;						\
	fi

sc_the_the:
	@re='\<the ''the\>'						\
	ignore_case=1 msg='found use of "the ''the";'			\
	  $(_prohibit_regexp)

sc_trailing_blank:
	@re='[	 ]$$'							\
	msg='found trailing blank(s)'					\
	  $(_prohibit_regexp)

# Match lines like the following, but where there is only one space
# between the options and the description:
#   -D, --all-repeated[=delimit-method]  print all duplicate lines\n
longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
sc_two_space_separator_in_usage:
	@grep -nE '^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'		\
	    $$($(VC_LIST_EXCEPT)) &&					\
	  { echo "$(ME): help2man requires at least two spaces between"; \
	    echo "$(ME): an option and its description";		\
		1>&2; exit 1; } || :

# Look for diagnostics that aren't marked for translation.
# This won't find any for which error's format string is on a separate line.
sc_unmarked_diagnostics:
	@grep -nE							\
	    '\<error \([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT))	\
	  | grep -v '_''(' &&						\
	  { echo '$(ME): found unmarked diagnostic(s)' 1>&2;		\
	    exit 1; } || :

# Avoid useless parentheses like those in this example:
# #if defined (SYMBOL) || defined (SYM2)
sc_useless_cpp_parens:
	@grep -n '^# *if .*defined *(' $$($(VC_LIST_EXCEPT)) &&		\
	  { echo '$(ME): found useless parentheses in cpp directive'	\
		1>&2; exit 1; } || :

# Require the latest GPL.
sc_GPL_version:
	@re='either ''version [^3]' msg='GPL vN, N!=3'			\
	  $(_prohibit_regexp)

cvs_keywords = \
  Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State

sc_prohibit_cvs_keyword:
	@re='\$$($(cvs_keywords))\$$'					\
	    msg='do not use CVS keyword expansion'			\
	  $(_prohibit_regexp)

# Make sure we don't use st_blocks.  Use ST_NBLOCKS instead.
# This is a bit of a kludge, since it prevents use of the string
# even in comments, but for now it does the job with no false positives.
sc_prohibit_stat_st_blocks:
	@re='[.>]st_blocks' msg='do not use st_blocks; use ST_NBLOCKS'	\
	  $(_prohibit_regexp)

# Make sure we don't define any S_IS* macros in src/*.c files.
# They're already defined via gnulib's sys/stat.h replacement.
sc_prohibit_S_IS_definition:
	@re='^ *# *define  *S_IS'					\
	msg='do not define S_IS* macros; include <sys/stat.h>'		\
	  $(_prohibit_regexp)

# Each program that uses proper_name_utf8 must link with
# one of the ICONV libraries.
sc_proper_name_utf8_requires_ICONV:
	@progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
	if test "x$$progs" != x; then					\
	  fail=0;							\
	  for p in $$progs; do						\
	    dir=$$(dirname "$$p");					\
	    base=$$(basename "$$p" .c);					\
	    grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null	\
	      || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
	  done;								\
	  test $$fail = 1 &&						\
	    { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
	      exit 1; } || :;						\
	fi

# Warn about "c0nst struct Foo const foo[]",
# but not about "char const *const foo" or "#define const const".
sc_redundant_const:
	@re='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'		\
	msg='redundant "const" in declarations'				\
	  $(_prohibit_regexp)

sc_const_long_option:
	@grep '^ *static.*struct option ' $$($(VC_LIST_EXCEPT))		\
	  | grep -Ev 'const struct option|struct option const' && {	\
	      echo 1>&2 '$(ME): add "const" to the above declarations'; \
	      exit 1; } || :

NEWS_hash =								\
  $$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p'		\
       $(srcdir)/NEWS							\
     | grep -v '^Copyright .*Free Software'				\
     | md5sum -								\
     | sed 's/ .*//')

# Ensure that we don't accidentally insert an entry into an old NEWS block.
sc_immutable_NEWS:
	@if test -f $(srcdir)/NEWS; then				\
	  test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : ||		\
	    { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; };	\
	fi

# Update the hash stored above.  Do this after each release and
# for any corrections to old entries.
update-NEWS-hash: NEWS
	perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
	  $(srcdir)/cfg.mk

# Ensure that we use only the standard $(VAR) notation,
# not @...@ in Makefile.am, now that we can rely on automake
# to emit a definition for each substituted variable.
# We use perl rather than "grep -nE ..." to exempt a single
# use of an @...@-delimited variable name in src/Makefile.am.
sc_makefile_check:
	@perl -ne '/\@[A-Z_0-9]+\@/ && !/^cu_install_program =/'	\
	  -e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}'	\
	    $$($(VC_LIST_EXCEPT) | grep -E '(^|/)Makefile\.am$$')	\
	  && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :

news-date-check: NEWS
	today=`date +%Y-%m-%d`;						\
	if head $(srcdir)/NEWS | grep '^\*.* $(VERSION_REGEXP) ('$$today')' \
	    >/dev/null; then						\
	  :;								\
	else								\
	  echo "version or today's date is not in NEWS" 1>&2;		\
	  exit 1;							\
	fi

sc_makefile_TAB_only_indentation:
	@grep -nE '^	[ ]{8}'						\
	    $$($(VC_LIST_EXCEPT) | grep -E 'akefile|\.mk$$')		\
	  && { echo '$(ME): found TAB-8-space indentation' 1>&2;	\
	       exit 1; } || :

sc_m4_quote_check:
	@grep -nE '(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]'		\
	    $$($(VC_LIST_EXCEPT) | grep -E '(^configure\.ac|\.m4)$$')	\
	  && { echo '$(ME): quote the first arg to AC_DEF*' 1>&2;	\
	       exit 1; } || :

fix_po_file_diag = \
'you have changed the set of files with translatable diagnostics;\n\
apply the above patch\n'

# Verify that all source files using _() are listed in po/POTFILES.in.
po_file = po/POTFILES.in
sc_po_check:
	@if test -f $(po_file); then					\
	  grep -E -v '^(#|$$)' $(po_file)				\
	    | grep -v '^src/false\.c$$' | sort > $@-1;			\
	  files=;							\
	  for file in $$($(VC_LIST_EXCEPT)) lib/*.[ch]; do		\
	    test -r $$file || continue;					\
	    case $$file in						\
	      *.m4|*.mk) continue ;;					\
	      *.?|*.??) ;;						\
	      *) continue;;						\
	    esac;							\
	    case $$file in						\
	    *.[ch])							\
	      base=`expr " $$file" : ' \(.*\)\..'`;			\
	      { test -f $$base.l || test -f $$base.y; } && continue;;	\
	    esac;							\
	    files="$$files $$file";					\
	  done;								\
	  grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files		\
	    | sort -u > $@-2;						\
	  diff -u -L $(po_file) -L $(po_file) $@-1 $@-2			\
	    || { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; };	\
	  rm -f $@-1 $@-2;						\
	fi

# Sometimes it is useful to change the PATH environment variable
# in Makefiles.  When doing so, it's better not to use the Unix-centric
# path separator of `:', but rather the automake-provided `$(PATH_SEPARATOR)'.
msg = '$(ME): Do not use `:'\'' above; use $$(PATH_SEPARATOR) instead'
sc_makefile_path_separator_check:
	@grep -nE 'PATH[=].*:'						\
	    $$($(VC_LIST_EXCEPT) | grep -E 'akefile|\.mk$$')		\
	  && { echo $(msg) 1>&2; exit 1; } || :

# Check that `make alpha' will not fail at the end of the process.
writable-files:
	if test -d $(release_archive_dir); then :; else			\
	  for file in $(distdir).tar.gz					\
		      $(release_archive_dir)/$(distdir).tar.gz; do	\
	    test -e $$file || continue;					\
	    test -w $$file						\
	      || { echo ERROR: $$file is not writable; fail=1; };	\
	  done;								\
	  test "$$fail" && exit 1 || : ;				\
	fi

v_etc_file = lib/version-etc.c
sample-test = tests/sample-test
texi = doc/$(PACKAGE).texi
# Make sure that the copyright date in $(v_etc_file) is up to date.
# Do the same for the $(sample-test) and the main doc/.texi file.
sc_copyright_check:
	@if test -f $(v_etc_file); then					\
	  grep 'enum { COPYRIGHT_YEAR = '$$(date +%Y)' };' $(v_etc_file) \
	    >/dev/null							\
	  || { echo 'out of date copyright in $(v_etc_file); update it' 1>&2; \
	       exit 1; };						\
	fi
	@if test -f $(sample-test); then				\
	  grep '# Copyright (C) '$$(date +%Y)' Free' $(sample-test)	\
	    >/dev/null							\
	  || { echo 'out of date copyright in $(sample-test); update it' 1>&2; \
	       exit 1; };						\
	fi
	@if test -f $(texi); then					\
	  grep 'Copyright @copyright{} .*'$$(date +%Y)' Free' $(texi)	\
	    >/dev/null							\
	  || { echo 'out of date copyright in $(texi); update it' 1>&2;	\
	       exit 1; };						\
	fi

vc-diff-check:
	(unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
	if test -s vc-diffs; then				\
	  cat vc-diffs;						\
	  echo "Some files are locally modified:" 1>&2;		\
	  exit 1;						\
	else							\
	  rm vc-diffs;						\
	fi

cvs-check: vc-diff-check

ALL_RECURSIVE_TARGETS += maintainer-distcheck
maintainer-distcheck:
	$(MAKE) distcheck
	$(MAKE) taint-distcheck
	$(MAKE) my-distcheck


# Don't make a distribution if checks fail.
# Also, make sure the NEWS file is up-to-date.
ALL_RECURSIVE_TARGETS += vc-dist
vc-dist: $(local-check) cvs-check maintainer-distcheck
	XZ_OPT=9ev $(MAKE) dist

# Use this to make sure we don't run these programs when building
# from a virgin tgz file, below.
null_AM_MAKEFLAGS = \
  ACLOCAL=false \
  AUTOCONF=false \
  AUTOMAKE=false \
  AUTOHEADER=false \
  MAKEINFO=false

built_programs = $$(cd src && MAKEFLAGS= $(MAKE) -s built_programs.list)

rel-files = $(DIST_ARCHIVES)

gnulib_dir ?= $(srcdir)/gnulib
gnulib-version = $$(cd $(gnulib_dir) && git describe)
bootstrap-tools ?= autoconf,automake,gnulib

announcement: NEWS ChangeLog $(rel-files)
	@$(build_aux)/announce-gen					\
	    --release-type=$(RELEASE_TYPE)				\
	    --package=$(PACKAGE)					\
	    --prev=$(PREV_VERSION)					\
	    --curr=$(VERSION)						\
	    --gpg-key-id=$(gpg_key_ID)					\
	    --news=NEWS							\
	    --bootstrap-tools=$(bootstrap-tools)			\
	    --gnulib-version=$(gnulib-version)				\
	    --no-print-checksums					\
	    $(addprefix --url-dir=, $(url_dir_list))

## ---------------- ##
## Updating files.  ##
## ---------------- ##

ftp-gnu = ftp://ftp.gnu.org/gnu
www-gnu = http://www.gnu.org

emit_upload_commands:
	@echo =====================================
	@echo =====================================
	@echo "$(build_aux)/gnupload $(GNUPLOADFLAGS) \\"
	@echo "    --to $(gnu_rel_host):$(PACKAGE) \\"
	@echo "  $(rel-files)"
	@echo '# send the /tmp/announcement e-mail'
	@echo =====================================
	@echo =====================================

noteworthy = * Noteworthy changes in release ?.? (????-??-??) [?]
define emit-commit-log
  printf '%s\n' 'post-release administrivia' '' \
    '* NEWS: Add header line for next release.' \
    '* .prev-version: Record previous version.' \
    '* cfg.mk (old_NEWS_hash): Auto-update.'
endef

.PHONY: no-submodule-changes
no-submodule-changes:
	if test -d $(srcdir)/.git; then					\
	  diff=$$(cd $(srcdir) && git submodule -q foreach		\
		  git diff-index --name-only HEAD)			\
	    || exit 1;							\
	  case $$diff in '') ;;						\
	    *) echo '$(ME): submodule files are locally modified:';	\
		echo "$$diff"; exit 1;; esac;				\
	else								\
	  : ;								\
	fi

.PHONY: alpha beta major
ALL_RECURSIVE_TARGETS += alpha beta major
alpha beta major: $(local-check) writable-files no-submodule-changes
	test $@ = major						\
	  && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$'	\
	       || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
	  || :
	$(MAKE) vc-dist
	$(MAKE) news-date-check
	$(MAKE) -s announcement RELEASE_TYPE=$@ > /tmp/announce-$(my_distdir)
	if test -d $(release_archive_dir); then			\
	  ln $(rel-files) $(release_archive_dir);		\
	  chmod a-w $(rel-files);				\
	fi
	$(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
	echo $(VERSION) > $(prev_version_file)
	$(MAKE) update-NEWS-hash
	perl -pi -e '$$. == 3 and print "$(noteworthy)\n\n\n"' NEWS
	$(emit-commit-log) > .ci-msg
	$(VC) commit -F .ci-msg -a

.PHONY: web-manual
web-manual:
	@test -z "$(manual_title)" \
	  && { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
	@cd '$(srcdir)/doc'; \
	  $(SHELL) ../build-aux/gendocs.sh -o '$(abs_builddir)/doc/manual' \
	     --email $(PACKAGE_BUGREPORT) $(PACKAGE) \
	    "$(PACKAGE_NAME) - $(manual_title)"
	@echo " *** Upload the doc/manual directory to web-cvs."

# Code Coverage

init-coverage:
	$(MAKE) $(AM_MAKEFLAGS) clean
	lcov --directory . --zerocounters

COVERAGE_CCOPTS ?= "-g --coverage"
COVERAGE_OUT ?= doc/coverage

build-coverage:
	$(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS)
	$(MAKE) $(AM_MAKEFLAGS) CFLAGS=$(COVERAGE_CCOPTS) CXXFLAGS=$(COVERAGE_CCOPTS) check
	mkdir -p $(COVERAGE_OUT)
	lcov --directory . --output-file $(COVERAGE_OUT)/$(PACKAGE).info \
		--capture

gen-coverage:
	genhtml --output-directory $(COVERAGE_OUT) \
		$(COVERAGE_OUT)/$(PACKAGE).info \
		--highlight --frames --legend \
		--title "$(PACKAGE_NAME)"

coverage: init-coverage build-coverage gen-coverage

# Update gettext files.
PACKAGE ?= $(shell basename $(PWD))
PO_DOMAIN ?= $(PACKAGE)
POURL = http://translationproject.org/latest/$(PO_DOMAIN)/
PODIR ?= po
refresh-po:
	rm -f $(PODIR)/*.po && \
	echo "$(ME): getting translations into po (please ignore the robots.txt ERROR 404)..." && \
	wget --no-verbose --directory-prefix $(PODIR) --no-directories --recursive --level 1 --accept .po --accept .po.1 $(POURL) && \
	echo 'en@boldquot' > $(PODIR)/LINGUAS && \
	echo 'en@quot' >> $(PODIR)/LINGUAS && \
	ls $(PODIR)/*.po | sed 's/\.po//' | sed 's,$(PODIR)/,,' | sort >> $(PODIR)/LINGUAS

INDENT_SOURCES ?= $(C_SOURCES)
.PHONY: indent
indent:
	indent $(INDENT_SOURCES)

# If you want to set UPDATE_COPYRIGHT_* environment variables,
# put the assignments in this variable.
update-copyright-env ?=

# Run this rule once per year (usually early in January)
# to update all FSF copyright year lists in your project.
# If you have an additional project-specific rule,
# add it in cfg.mk along with a line 'update-copyright: prereq'.
# By default, exclude all variants of COPYING; you can also
# add exemptions (such as ChangeLog..* for rotated change logs)
# in the file .x-update-copyright.
.PHONY: update-copyright
update-copyright:
	grep -l -w Copyright                                             \
	  $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
	  | $(update-copyright-env) xargs $(build_aux)/$@