summaryrefslogtreecommitdiff
path: root/Makefile.maint
blob: 1c9d6971204c5e57f8f6ef975f0a8fd247d869c0 (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
# -*-Makefile-*-
# This Makefile fragment is shared between the coreutils,
# CPPI, Bison, and Autoconf.

## Copyright (C) 2001-2007 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 2, 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, write to the Free Software
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
## 02110-1301, USA.

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

# 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)'

CVS = cvs
GIT = git
VC = $(GIT)
VC-tag = git-tag -s -m '$(VERSION)'

CVS_LIST = build-aux/vc-list-files

CVS_LIST_EXCEPT = \
  $(CVS_LIST) | if test -f .x-$@; then grep -vEf .x-$@; else grep -v ChangeLog; fi

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

PREV_VERSION := $(shell cat $(prev_version_file))
VERSION_REGEXP = $(subst .,\.,$(VERSION))

tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
tag-this-version = $(subst .,_,$(VERSION))
this-vc-tag = $(tag-package)-$(tag-this-version)
my_distdir = $(PACKAGE)-$(VERSION)

# Old releases are stored here.
# Used for diffs and xdeltas.
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.  ##
## --------------- ##

# FIXME: add a check to prohibit definition in src/*.c of symbols defined
# in system.h.  E.g. today I removed from tail.c a useless definition of
# ENOSYS.  It was useless because system.h ensures it's defined.

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

# Checks that don't require cvs.
# Run `changelog-check' last, as previous test may reveal problems requiring
# new ChangeLog entries.
local-checks-available = \
  po-check copyright-check m4-check author_mark_check \
  changelog-check patch-check strftime-check $(syntax-check-rules) \
  makefile_path_separator_check \
  makefile-check check-AUTHORS
.PHONY: $(local-checks-available)

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

sc_cast_of_argument_to_free:
	@grep -nE '\<free \(\(' $$($(CVS_LIST_EXCEPT)) &&		\
	  { echo '$(ME): don'\''t cast free argument' 1>&2;		\
	    exit 1; } || :

sc_cast_of_x_alloc_return_value:
	@grep -nE '\*\) *x(m|c|re)alloc\>' $$($(CVS_LIST_EXCEPT)) &&	\
	  { echo '$(ME): don'\''t cast x*alloc return value' 1>&2;	\
	    exit 1; } || :

sc_cast_of_alloca_return_value:
	@grep -nE '\*\) *alloca\>' $$($(CVS_LIST_EXCEPT)) &&		\
	  { echo '$(ME): don'\''t cast alloca return value' 1>&2;	\
	    exit 1; } || :

sc_space_tab:
	@grep -n '[ ]	' $$($(CVS_LIST_EXCEPT)) &&			\
	  { echo '$(ME): found SPACE-TAB sequence; remove the SPACE'	\
		1>&2; exit 1; } || :

# 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:
	@grep -nE '\<([fs]?scanf|ato([filq]|ll))\>' $$($(CVS_LIST_EXCEPT)) && \
	  { echo '$(ME): do not use *scan''f, ato''f, ato''i, ato''l, ato''ll, or ato''q'	\
		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 -nF 'error (EXIT_SUCCESS,'				\
	    $$(find -type f -name '*.[chly]') &&			\
	  { echo '$(ME): found error (EXIT_SUCCESS' 1>&2;		\
	    exit 1; } || :

sc_file_system:
	@grep -ni 'file''system' $$($(CVS_LIST_EXCEPT)) &&		\
	  { echo '$(ME): found use of "file''system";'			\
	    'rewrite to use "file system"' 1>&2;			\
	    exit 1; } || :

sc_no_have_config_h:
	@grep -n 'HAVE''_CONFIG_H' $$($(CVS_LIST_EXCEPT)) &&		\
	  { echo '$(ME): found use of HAVE''_CONFIG_H; remove'		\
		1>&2; exit 1; } || :

# Nearly all .c files must include <config.h>.
sc_require_config_h:
	@if $(CVS_LIST_EXCEPT) | grep '\.c$$' > /dev/null; then		\
	  grep -L '^# *include <config\.h>'				\
		$$($(CVS_LIST_EXCEPT) | grep '\.c$$')			\
	      | grep . &&						\
	  { echo '$(ME): the above files do not include <config.h>'	\
		1>&2; exit 1; } || :;					\
	else :;								\
	fi

# Prohibit the inclusion of assert.h without an actual use of assert.
sc_prohibit_assert_without_use:
	@if $(CVS_LIST_EXCEPT) | grep '\.c$$' > /dev/null; then		\
	  files=$$(grep -l '# *include <assert\.h>'			\
		    $$($(CVS_LIST_EXCEPT) | grep '\.c$$')) &&		\
	  grep -L '\<assert (' $$files					\
	      | grep . &&						\
	    { echo "$(ME): the above files include <assert.h> but don't use it" \
		  1>&2; exit 1; } || :;					\
	else :;								\
	fi

sc_obsolete_symbols:
	@grep -nE '\<(HAVE''_FCNTL_H|O''_NDELAY)\>'			\
	     $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): do not use HAVE''_FCNTL_H or O''_NDELAY'	\
		1>&2; exit 1; } || :

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

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

# Ensure that dd's definition of LONGEST_SYMBOL stays in sync
# with the strings from the two affected variables.
dd_c = $(srcdir)/src/dd.c
sc_dd_max_sym_length:
ifneq ($(wildcard $(dd_c)),)
	@len=$$( (sed -n '/conversions\[\] =$$/,/^};/p' $(dd_c);\
		 sed -n '/flags\[\] =$$/,/^};/p' $(dd_c) )	\
		|sed -n '/"/s/^[^"]*"\([^"]*\)".*/\1/p'		\
	      | wc --max-line-length);				\
	max=$$(sed -n '/^#define LONGEST_SYMBOL /s///p' $(dd_c)	\
	      |tr -d '"' | wc --max-line-length);		\
	if test "$$len" = "$$max"; then :; else			\
	  echo 'dd.c: LONGEST_SYMBOL is not longest' 1>&2;	\
	  exit 1;						\
	fi
endif

# Many m4 macros names once began with `jm_'.
# On 2004-04-13, they were all changed to start with gl_ instead.
# Make sure that none are inadvertently reintroduced.
sc_prohibit_jm_in_m4:
	@grep -nE 'jm_[A-Z]'					\
		$$($(CVS_LIST) m4 |grep '\.m4$$'; echo /dev/null) && \
	    { echo '$(ME): do not use jm_ in m4 macro names'	\
	      1>&2; exit 1; } || :

sc_root_tests:
	@if test -d tests \
	      && grep check-root tests/Makefile.am>/dev/null 2>&1; then \
	t1=sc-root.expected; t2=sc-root.actual;				\
	grep -nl '^PRIV_CHECK_ARG=require-root'				\
	  $$($(CVS_LIST) tests) |sed s,tests,., |sort > $$t1;		\
	sed -n 's,	cd \([^ ]*\) .*MAKE..check TESTS=\(.*\),./\1/\2,p' \
	  $(srcdir)/tests/Makefile.am |sort > $$t2;			\
	diff -u $$t1 $$t2 || diff=1;					\
	rm -f $$t1 $$t2;						\
	test "$$diff"							\
	  && { echo 'tests/Makefile.am: missing check-root action'>&2;	\
	       exit 1; } || :;						\
	fi

headers_with_interesting_macro_defs = \
  exit.h	\
  fcntl_.h	\
  fnmatch_.h	\
  intprops.h	\
  inttypes_.h	\
  lchown.h	\
  openat.h	\
  stat-macros.h	\
  stdint_.h

# Create a list of regular expressions matching the names
# of macros that are guaranteed by parts of gnulib to be defined.
.re-defmac:
	@(cd $(srcdir)/lib;						\
	  for f in $(headers_with_interesting_macro_defs); do		\
	    test -f $$f &&						\
	      sed -n '/^# *define \([^_ (][^ (]*\)[ (].*/s//\1/p' $$f;	\
	   done;							\
	 ) | sort -u							\
	   | grep -Ev 'ATTRIBUTE_NORETURN|SIZE_MAX'			\
	   | sed 's/^/^# *define /'					\
	  > $@-t
	@mv $@-t $@

# Don't define macros that we already get from gnulib header files.
sc_always_defined_macros: .re-defmac
	@if test -f $(srcdir)/src/system.h; then			\
	  trap 'rc=$$?; rm -f .re-defmac; exit $$rc' 0 1 2 3 15;	\
	  grep -f .re-defmac $$($(CVS_LIST))				\
	    && { echo '$(ME): define the above via some gnulib .h file'	\
		  1>&2;  exit 1; } || :;				\
	fi

# Create a list of regular expressions matching the names
# of files included from system.h.  Exclude a couple.
.re-list:
	@sed -n '/^# *include /s///p' $(srcdir)/src/system.h \
	  | grep -Ev 'sys/(param|file)\.h' \
	  | sed 's/ .*//;;s/^["<]/^# *include [<"]/;s/\.h[">]$$/\\.h[">]/' \
	  > $@-t
	@mv $@-t $@

# Files in src/ should not include directly any of
# the headers already included via system.h.
sc_system_h_headers: .re-list
	@if test -f $(srcdir)/src/system.h; then			\
	  trap 'rc=$$?; rm -f .re-list; exit $$rc' 0 1 2 3 15;		\
	  grep -nE -f .re-list						\
	      $$($(CVS_LIST) src |					\
		 grep -Ev '((copy|system)\.h|parse-gram\.c)$$')		\
	    && { echo '$(ME): the above are already included via system.h'\
		  1>&2;  exit 1; } || :;				\
	fi

sc_sun_os_names:
	@grep -nEi \
	    'solaris[^[:alnum:]]*2\.(7|8|9|[1-9][0-9])|sunos[^[:alnum:]][6-9]' \
	    $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo '$(ME): found misuse of Sun OS version numbers' 1>&2;	\
	    exit 1; } || :

sc_the_the:
	@grep -ni '\<the ''the\>' $$($(CVS_LIST_EXCEPT)) &&		\
	  { echo '$(ME): found use of "the ''the";' 1>&2;		\
	    exit 1; } || :

sc_tight_scope:
	$(MAKE) -C src $@

sc_trailing_blank:
	@grep -n '[	 ]$$' $$($(CVS_LIST_EXCEPT)) &&			\
	  { echo '$(ME): found trailing blank(s)'			\
		1>&2; exit 1; } || :

# 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) [^ ].*\\$$'		\
	    $$($(CVS_LIST_EXCEPT)) &&					\
	  { echo "$(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}' $$($(CVS_LIST_EXCEPT))	\
	  | grep -v '_''(' &&						\
	  { echo '$(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 *(' $$($(CVS_LIST_EXCEPT)) &&	\
	  { echo '$(ME): found useless parentheses in cpp directive'	\
		1>&2; exit 1; } || :

# Ensure that the c99-to-c89 patch applies cleanly.
patch-check:
	rm -rf src-c89 $@.1 $@.2
	cp -a src src-c89
	(cd src-c89; patch -p2 -V never --fuzz=0) < src/c99-to-c89.diff \
	  > $@.1 2>&1
	if test "$${REGEN_PATCH+set}" = set; then \
	  diff -upr src src-c89 > new-diff || : ; fi
	grep -v '^patching file ' $@.1 > $@.2 || :
	msg=ok; test -s $@.2 && msg='fuzzy patch' || : ;	\
	rm -f src-c89/*.o || msg='rm failed';			\
	$(MAKE) -C src-c89 CFLAGS='-Wdeclaration-after-statement -Werror' \
	  || msg='compile failure with extra options';		\
	rm -rf src-c89 $@.1 $@.2;				\
	test "$$msg" = ok && : || echo "$$msg" 1>&2;		\
	test "$$msg" = ok

# Ensure that date's --help output stays in sync with the info
# documentation for GNU strftime.  The only exception is %N,
# which date accepts but GNU strftime does not.
extract_char = sed 's/^[^%][^%]*%\(.\).*/\1/'
strftime-check:
	if test -f $(srcdir)/src/date.c; then				\
	  grep '^  %.  ' $(srcdir)/src/date.c | sort			\
	    | $(extract_char) > $@-src;					\
	  { echo N;							\
	    info libc date calendar format | grep '^    `%.'\'		\
	      | $(extract_char); } | sort > $@-info;			\
	  diff -u $@-src $@-info || exit 1;				\
	  rm -f $@-src $@-info;						\
	fi

check-AUTHORS:
	$(MAKE) -C src $@

# 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.
makefile-check:
	grep -nE '@[A-Z_0-9]+@' `find . -name Makefile.am` \
	  && { echo 'Makefile.maint: use $$(...), not @...@' 1>&2; exit 1; } || :

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

changelog-check:
	if head ChangeLog | grep 'Version $(VERSION_REGEXP)\.$$'	\
	    >/dev/null; then						\
	  :;								\
	else								\
	  echo "$(VERSION) not in ChangeLog" 1>&2;			\
	  exit 1;							\
	fi

m4-check:
	@grep -n 'AC_DEFUN([^[]' m4/*.m4 \
	  && { echo 'Makefile.maint: quote the first arg to AC_DEFUN' 1>&2; \
	       exit 1; } || :

# Verify that all source files using _() are listed in po/POTFILES.in.
# FIXME: don't hard-code file names below; use a more general mechanism.
po-check:
	if test -f po/POTFILES.in; then					\
	  grep -E -v '^(#|$$)' po/POTFILES.in				\
	    | grep -v '^src/false\.c$$' | sort > $@-1;			\
	  files=;							\
	  for file in $$($(CVS_LIST_EXCEPT)) lib/*.[ch]; do		\
	    case $$file in						\
	    djgpp/* | man/*) continue;;					\
	    */c99-to-c89.diff) 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 $@-1 $@-2 || exit 1;					\
	  rm -f $@-1 $@-2;						\
	fi

# In a definition of #define AUTHORS "... and ..." where the RHS contains
# the English word `and', the string must be marked with `N_ (...)' so that
# gettext recognizes it as a string requiring translation.
author_mark_check:
	@grep -n '^# *define AUTHORS "[^"]* and ' src/*.c |grep -v ' N_ (' && \
	  { echo 'Makefile.maint: enclose the above strings in N_ (...)' 1>&2; \
	    exit 1; } || :

# 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@'.
# It'd be better to use `find -print0 ...|xargs -0 ...', but less portable,
# and there probably aren't many projects with so many Makefile.am files
# that we'd have to worry about limits on command line length.
msg = 'Makefile.maint: Do not use `:'\'' above; use @PATH_SEPARATOR@ instead'
makefile_path_separator_check:
	@grep -n 'PATH=.*:' `find $(srcdir) -name Makefile.am` \
	  && { 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			\
	  mkdir $(release_archive_dir);					\
	fi
	for file in $(distdir).tar.gz $(xd-delta)			\
	            $(release_archive_dir)/$(distdir).tar.gz		\
	            $(release_archive_dir)/$(xd-delta); do		\
	  test -e $$file || continue;					\
	  test -w $$file						\
	    || { echo ERROR: $$file is not writable; fail=1; };		\
	done;								\
	test "$$fail" && exit 1 || :

v_etc_file = lib/version-etc.c
sample-test = tests/sample-test
# Make sure that the copyright date in $(v_etc_file) is up to date.
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


# Sanity checks with the repository.
# Abort early if this tag has already been used.
vc-tag-check:
	used=no;							\
	if $(VC) --help | grep CVS; then				\
	  $(CVS) -n log -h README|grep -e $(this-vc-tag): >/dev/null	\
	    && used=yes;						\
	else								\
	  $(GIT) tag -l '^$(this-vc-tag)$$' && used=yes;		\
	fi;								\
	if test "$$used" = yes; then					\
	  echo "$(this-vc-tag) has already been used; not tagging" 1>&2; \
	  exit 1;							\
	fi

vc-diff-check:
	$(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 vc-tag-check

maintainer-distcheck:
	$(MAKE) distcheck
	$(MAKE) my-distcheck


# Tag before making distribution.  Also, don't make a distribution if
# checks fail.  Also, make sure the NEWS file is up-to-date.
# FIXME: use dist-hook/my-dist like distcheck-hook/my-distcheck.
vc-dist: $(local-check) cvs-check maintainer-distcheck
	$(VC-tag) $(this-vc-tag)
	$(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

warn_cflags = -Dlint -O -Werror -Wall -Wformat -Wshadow -Wpointer-arith

# Use -Wformat -Werror to detect format-string/arg-list mismatches.
# Also, check for shadowing problems with -Wshadow, and for pointer
# arithmetic problems with -Wpointer-arith.
# These CFLAGS are pretty strict.  If you build this target, you probably
# have to have a recent version of gcc and glibc headers.
TMPDIR ?= /tmp
t=$(TMPDIR)/$(PACKAGE)/test
my-distcheck: $(local-check) $(release_archive_dir)/$(prev-tgz)
	-rm -rf $(t)
	mkdir -p $(t)
	GZIP=$(GZIP_ENV) $(AMTAR) -C $(t) -zxf $(distdir).tar.gz
	cd $(t)/$(distdir)				\
	  && ./configure --disable-nls			\
	  && $(MAKE) CFLAGS='$(warn_cflags)'		\
	      AM_MAKEFLAGS='$(null_AM_MAKEFLAGS)'	\
	  && $(MAKE) dvi				\
	  && $(MAKE) check				\
	  && $(MAKE) distclean
	(cd $(t) && mv $(distdir) $(distdir).old	\
	  && $(AMTAR) -zxf - ) < $(distdir).tar.gz
	diff -ur $(t)/$(distdir).old $(t)/$(distdir)
	if test -f $(srcdir)/src/c99-to-c89.diff; then			\
	  cd $(t)/$(distdir)						\
	    && (cd src && patch -V never --fuzz=0 <c99-to-c89.diff)	\
	    && ./configure --disable-largefile				\
	         CFLAGS='-Werror -ansi -pedantic -Wno-long-long'	\
	    && $(MAKE);							\
	fi
	-rm -rf $(t)
	@echo "========================"; \
	echo "$(distdir).tar.gz is ready for distribution"; \
	echo "========================"

WGET = wget
WGETFLAGS = -C off

rel-check:
	tarz=/tmp/rel-check-tarz-$$$$; \
	md5_tmp=/tmp/rel-check-md5-$$$$; \
	set -e; \
	trap 'status=$$?; rm -f $$tarz $$md5_tmp; exit $$status' 0 1 2 3 15; \
	$(WGET) $(WGETFLAGS) -q --output-document=$$tarz $(url); \
	echo "$(md5)  -" > $$md5_tmp; \
	md5sum -c $$md5_tmp < $$tarz

prev-tgz = $(PACKAGE)-$(PREV_VERSION).tar.gz
xd-delta = $(PACKAGE)-$(PREV_VERSION)-$(VERSION).xdelta

rel-files = $(xd-delta) $(DIST_ARCHIVES)

# Approximate the date of last gnulib "update" by the ChangeLog file's
# mtime, and provide that date in the announcement.
announcement: NEWS ChangeLog $(rel-files)
	@cl_date=$$(stat --printf @%Y $(gnulib_dir)/ChangeLog);		\
	utc_date=$$(date -u --date $$cl_date '+%Y-%m-%d %T %z');	\
	./build-aux/announce-gen					\
	    --release-type=$(RELEASE_TYPE)				\
	    --package=$(PACKAGE)					\
	    --prev=$(PREV_VERSION)					\
	    --curr=$(VERSION)						\
	    --gpg-key-id=$(gpg_key_ID)					\
	    --news=NEWS							\
	    --bootstrap-tools=autoconf,automake,bison,gnulib		\
	    --gnulib-snapshot-time-stamp="$$utc_date"			\
	    $(addprefix --url-dir=, $(url_dir_list))

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

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

# Use mv, if you don't have/want move-if-change.
move_if_change ?= move-if-change

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

$(xd-delta): $(release_archive_dir)/$(prev-tgz) $(distdir).tar.gz
	xdelta delta -9 $^ $@ || :

.PHONY: alpha beta major
alpha beta major: news-date-check changelog-check $(local-check) writable-files
	test $@ = major						\
	  && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$'	\
	       || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
	  || :
	$(MAKE) vc-dist
	$(MAKE) $(xd-delta)
	$(MAKE) -s announcement RELEASE_TYPE=$@ > /tmp/announce-$(my_distdir)
	ln $(rel-files) $(release_archive_dir)
	chmod a-w $(rel-files)
	$(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
	echo $(VERSION) > $(prev_version_file)
	$(VC) commit -m \
	  '$(prev_version_file): Record previous version: $(VERSION).' \
	  $(prev_version_file)