cfg.mk

   1 # Customize maint.mk                           -*- makefile -*-
   2 # Copyright (C) 2003-2012 Free Software Foundation, Inc.
   3
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 # Used in maint.mk's web-manual rule
  18 manual_title = Core GNU utilities
  19
  20 # Use the direct link.  This is guaranteed to work immediately, while
  21 # it can take a while for the faster mirror links to become usable.
  22 url_dir_list = http://ftp.gnu.org/gnu/$(PACKAGE)
  23
  24 # Tests not to run as part of "make distcheck".
  25 local-checks-to-skip = \
  26   sc_proper_name_utf8_requires_ICONV
  27
  28 # Tools used to bootstrap this package, used for "announcement".
  29 bootstrap-tools = autoconf,automake,gnulib,bison
  30
  31 # Now that we have better tests, make this the default.
  32 export VERBOSE = yes
  33
  34 # Comparing tarball sizes compressed using different xz presets, we see that
  35 # an -8e-compressed tarball is only 9KiB larger than the -9e-compressed one.
  36 # Using -8e is preferred, since that lets the decompression process use half
  37 # the memory (32MiB rather than 64MiB).
  38 # $ for i in {7,8,9}{e,}; do \
  39 #     (n=$(xz -$i < coreutils-8.15*.tar|wc -c);echo $n $i) & done |sort -nr
  40 # 5129388 7
  41 # 5036524 7e
  42 # 5017476 8
  43 # 5010604 9
  44 # 4923016 8e
  45 # 4914152 9e
  46 export XZ_OPT = -8e
  47
  48 old_NEWS_hash = a99128b9985b2e76bdcabf3e5d95ca1a
  49
  50 # Add an exemption for sc_makefile_at_at_check.
  51 _makefile_at_at_check_exceptions = ' && !/^cu_install_program =/'
  52
  53 # Our help-version script is in a slightly different location.
  54 _hv_file ?= $(srcdir)/tests/misc/help-version
  55
  56 # Ensure that the list of O_ symbols used to compute O_FULLBLOCK is complete.
  57 dd = $(srcdir)/src/dd.c
  58 sc_dd_O_FLAGS:
  59         @rm -f $@.1 $@.2
  60         @{ echo O_FULLBLOCK; echo O_NOCACHE;                            \
  61           perl -nle '/^ +\| (O_\w*)$$/ and print $$1' $(dd); } | sort > $@.1
  62         @{ echo O_NOFOLLOW; perl -nle '/{"[a-z]+",\s*(O_\w+)},/ and print $$1' \
  63           $(dd); } | sort > $@.2
  64         @diff -u $@.1 $@.2 || diff=1 || diff=;                          \
  65         rm -f $@.1 $@.2;                                                \
  66         test "$$diff"                                                   \
  67           && { echo '$(ME): $(dd) has inconsistent O_ flag lists'>&2;   \
  68                exit 1; } || :
  69
  70 # Ensure that dd's definition of LONGEST_SYMBOL stays in sync
  71 # with the strings from the two affected variables.
  72 dd_c = $(srcdir)/src/dd.c
  73 sc_dd_max_sym_length:
  74 ifneq ($(wildcard $(dd_c)),)
  75         @len=$$( (sed -n '/conversions\[\] =$$/,/^};/p' $(dd_c);\
  76                  sed -n '/flags\[\] =$$/,/^};/p' $(dd_c) )      \
  77                 |sed -n '/"/s/^[^"]*"\([^"]*\)".*/\1/p'         \
  78               | wc --max-line-length);                          \
  79         max=$$(sed -n '/^#define LONGEST_SYMBOL /s///p' $(dd_c) \
  80               |tr -d '"' | wc --max-line-length);               \
  81         if test "$$len" = "$$max"; then :; else                 \
  82           echo 'dd.c: LONGEST_SYMBOL is not longest' 1>&2;      \
  83           exit 1;                                               \
  84         fi
  85 endif
  86
  87 # Many m4 macros names once began with 'jm_'.
  88 # On 2004-04-13, they were all changed to start with gl_ instead.
  89 # Make sure that none are inadvertently reintroduced.
  90 sc_prohibit_jm_in_m4:
  91         @grep -nE 'jm_[A-Z]'                                            \
  92                 $$($(VC_LIST) m4 |grep '\.m4$$'; echo /dev/null) &&     \
  93             { echo '$(ME): do not use jm_ in m4 macro names'            \
  94               1>&2; exit 1; } || :
  95
  96 # Ensure that each root-requiring test is run via the "check-root" rule.
  97 sc_root_tests:
  98         @t1=sc-root.expected; t2=sc-root.actual;                        \
  99         grep -nl '^ *require_root_$$' `$(VC_LIST) tests` | sort > $$t1; \
 100         for t in $(all_root_tests); do echo $$t; done | sort > $$t2;    \
 101         st=0; diff -u $$t1 $$t2 || st=1;                                \
 102         rm -f $$t1 $$t2;                                                \
 103         exit $$st
 104
 105 # Ensure that all version-controlled test cases are listed in $(all_tests).
 106 sc_tests_list_consistency:
 107         @bs="\\";                                                       \
 108         test_extensions_rx=`echo $(TEST_EXTENSIONS)                     \
 109           | sed -e "s/ /|/g" -e "s/$$bs./$$bs$$bs./g"`;                 \
 110         {                                                               \
 111           for t in $(all_tests); do echo $$t; done;                     \
 112           cd $(top_srcdir);                                             \
 113           $(SHELL) build-aux/vc-list-files tests                        \
 114             | grep -v '^tests/init\.sh$$'                               \
 115             | $(EGREP) "$$test_extensions_rx\$$";                       \
 116         } | sort | uniq -u | grep . && exit 1; :
 117
 118 # Create a list of regular expressions matching the names
 119 # of files included from system.h.  Exclude a couple.
 120 .re-list:
 121         @sed -n '/^# *include /s///p' $(srcdir)/src/system.h \
 122           | grep -Ev 'sys/(param|file)\.h' \
 123           | sed 's/ .*//;;s/^["<]/^# *include [<"]/;s/\.h[">]$$/\\.h[">]/' \
 124           > $@-t
 125         @mv $@-t $@
 126
 127 define gl_trap_
 128   Exit () { set +e; (exit $$1); exit $$1; };                            \
 129   for sig in 1 2 3 13 15; do                                            \
 130     eval "trap 'Exit $$(expr $$sig + 128)' $$sig";                      \
 131   done
 132 endef
 133
 134 # Files in src/ should not include directly any of
 135 # the headers already included via system.h.
 136 sc_system_h_headers: .re-list
 137         @if test -f $(srcdir)/src/system.h; then                        \
 138           trap 'rc=$$?; rm -f .re-list; exit $$rc' 0;                   \
 139           $(gl_trap_);                                                  \
 140           grep -nE -f .re-list                                          \
 141               $$($(VC_LIST_EXCEPT) | grep '^\($(srcdir)/\)\?src/')      \
 142             && { echo '$(ME): the above are already included via system.h'\
 143                   1>&2;  exit 1; } || :;                                \
 144         fi
 145
 146 sc_sun_os_names:
 147         @grep -nEi \
 148             'solaris[^[:alnum:]]*2\.(7|8|9|[1-9][0-9])|sunos[^[:alnum:]][6-9]' \
 149             $$($(VC_LIST_EXCEPT)) &&                                    \
 150           { echo '$(ME): found misuse of Sun OS version numbers' 1>&2;  \
 151             exit 1; } || :
 152
 153 # Ensure that the list of programs and author names is accurate.
 154 # We need a UTF8 locale.  If a lack of locale support or a missing
 155 # translation inhibits printing of UTF-8 names, just skip this test.
 156 au_dotdot = authors-dotdot
 157 au_actual = authors-actual
 158 sc_check-AUTHORS: $(all_programs)
 159         @locale=en_US.UTF-8;                            \
 160         LC_ALL=$$locale ./src/cat --version             \
 161             | grep ' Torbjorn ' > /dev/null             \
 162           && { echo "$@: skipping this check"; exit 0; }; \
 163         rm -f $(au_actual) $(au_dotdot);                \
 164         for i in `ls $(all_programs)                    \
 165             | sed -e 's,^src/,,' -e 's,$(EXEEXT)$$,,'   \
 166             | sed /libstdbuf/d                          \
 167             | $(ASSORT) -u`; do                         \
 168           test "$$i" = '[' && continue;                 \
 169           exe=$$i;                                      \
 170           if test "$$i" = install; then                 \
 171             exe=ginstall;                               \
 172           elif test "$$i" = test; then                  \
 173             exe='[';                                    \
 174           fi;                                           \
 175           LC_ALL=$$locale ./src/$$exe --version         \
 176             | perl -0 -pi -e 's/,\n/, /gm'              \
 177             | sed -n -e '/Written by /{ s//'"$$i"': /;' \
 178                   -e 's/,* and /, /; s/\.$$//; p; }';   \
 179         done > $(au_actual) &&                          \
 180         sed -n '/^[^ ][^ ]*:/p' $(srcdir)/AUTHORS > $(au_dotdot) \
 181           && diff $(au_actual) $(au_dotdot) \
 182           && rm -f $(au_actual) $(au_dotdot)
 183
 184 # Look for lines longer than 80 characters, except omit:
 185 # - program-generated long lines in diff headers,
 186 # - tests involving long checksum lines, and
 187 # - the 'pr' test cases.
 188 LINE_LEN_MAX = 80
 189 FILTER_LONG_LINES =                                             \
 190   /^[^:]*\.diff:[^:]*:@@ / d;                                   \
 191   \|^[^:]*tests/misc/sha[0-9]*sum.*\.pl[-:]| d;                 \
 192   \|^[^:]*tests/pr/|{ \|^[^:]*tests/pr/pr-tests:| !d; };
 193 sc_long_lines:
 194         @files=$$($(VC_LIST_EXCEPT))                                    \
 195         halt='line(s) with more than $(LINE_LEN_MAX) characters; reindent'; \
 196         for file in $$files; do                                         \
 197           expand $$file | grep -nE '^.{$(LINE_LEN_MAX)}.' |             \
 198           sed -e "s|^|$$file:|" -e '$(FILTER_LONG_LINES)';              \
 199         done | grep . && { msg="$$halt" $(_sc_say_and_exit) } || :
 200
 201 # Option descriptions should not start with a capital letter.
 202 # One could grep source directly as follows:
 203 # grep -E " {2,6}-.*[^.]  [A-Z][a-z]" $$($(VC_LIST_EXCEPT) | grep '\.c$$')
 204 # but that would miss descriptions not on the same line as the -option.
 205 sc_option_desc_uppercase: $(ALL_MANS)
 206         @grep '^\\fB\\-' -A1 man/*.1 | LC_ALL=C grep '\.1.[A-Z][a-z]'   \
 207           && { echo 1>&2 '$@: found initial capitals in --help'; exit 1; } || :
 208
 209 # Ensure all man/*.[1x] files are present.
 210 sc_man_file_correlation: check-x-vs-1 check-programs-vs-x
 211
 212 # Ensure that for each .x file in the 'man/' subdirectory, there is a
 213 # corresponding .1 file in the definition of $(EXTRA_MANS).
 214 # But since that expansion usually lacks programs like arch and hostname,
 215 # add them here manually.
 216 .PHONY: check-x-vs-1
 217 check-x-vs-1:
 218         @PATH=./src$(PATH_SEPARATOR)$$PATH; export PATH;                \
 219         t=$@-t;                                                         \
 220         (cd $(srcdir)/man && ls -1 *.x)                                 \
 221           | sed 's/\.x$$//' | $(ASSORT) > $$t;                          \
 222         (echo $(patsubst man/%,%,$(ALL_MANS))                           \
 223           | tr -s ' ' '\n' | sed 's/\.1$$//')                           \
 224           | $(ASSORT) -u | diff - $$t || { rm $$t; exit 1; };           \
 225         rm $$t
 226
 227 # Writing a portable rule to generate a manpage like '[.1' would be
 228 # a nightmare, so filter that out.
 229 all-progs-but-lbracket = $(filter-out [,$(patsubst src/%,%,$(all_programs)))
 230
 231 # Ensure that for each coreutils program there is a corresponding
 232 # '.x' file in the 'man/' subdirectory.
 233 .PHONY: check-programs-vs-x
 234 check-programs-vs-x:
 235         @status=0;                                      \
 236         for p in dummy $(all-progs-but-lbracket); do    \
 237           case $$p in *.so) continue;; esac;            \
 238           test $$p = dummy && continue;                 \
 239           test $$p = ginstall && p=install || : ;       \
 240           test -f $(srcdir)/man/$$p.x                   \
 241             || { echo missing $$p.x 1>&2; status=1; };  \
 242         done;                                           \
 243         exit $$status
 244
 245 # Ensure that the end of each release's section is marked by two empty lines.
 246 sc_NEWS_two_empty_lines:
 247         @sed -n 4,/Noteworthy/p $(srcdir)/NEWS                          \
 248             | perl -n0e '/(^|\n)\n\n\* Noteworthy/ or exit 1'           \
 249           || { echo '$(ME): use two empty lines to separate NEWS sections' \
 250                  1>&2; exit 1; } || :
 251
 252 # With split lines, don't leave an operator at end of line.
 253 # Instead, put it on the following line, where it is more apparent.
 254 # Don't bother checking for "*" at end of line, since it provokes
 255 # far too many false positives, matching constructs like "TYPE *".
 256 # Similarly, omit "=" (initializers).
 257 binop_re_ ?= [-/+^!<>]|[-/+*^!<>=]=|&&?|\|\|?|<<=?|>>=?
 258 sc_prohibit_operator_at_end_of_line:
 259         @prohibit='. ($(binop_re_))$$'                                  \
 260         in_vc_files='\.[chly]$$'                                        \
 261         halt='found operator at end of line'                            \
 262           $(_sc_search_regexp)
 263
 264 # Don't use "readlink" or "readlinkat" directly
 265 sc_prohibit_readlink:
 266         @prohibit='\<readlink(at)? \('                                  \
 267         halt='do not use readlink(at); use via xreadlink or areadlink*' \
 268           $(_sc_search_regexp)
 269
 270 # Don't use address of "stat" or "lstat" functions
 271 sc_prohibit_stat_macro_address:
 272         @prohibit='\<l?stat '':|&l?stat\>'                              \
 273         halt='stat() and lstat() may be function-like macros'           \
 274           $(_sc_search_regexp)
 275
 276 # Ensure that date's --help output stays in sync with the info
 277 # documentation for GNU strftime.  The only exception is %N,
 278 # which date accepts but GNU strftime does not.
 279 extract_char = sed 's/^[^%][^%]*%\(.\).*/\1/'
 280 sc_strftime_check:
 281         @if test -f $(srcdir)/src/date.c; then                          \
 282           grep '^  %.  ' $(srcdir)/src/date.c | sort                    \
 283             | $(extract_char) > $@-src;                                 \
 284           { echo N;                                                     \
 285             info libc date calendar format 2>/dev/null|grep '^    `%.'\'\
 286               | $(extract_char); } | sort > $@-info;                    \
 287           if test $$(stat --format %s $@-info) != 2; then               \
 288             diff -u $@-src $@-info || exit 1;                           \
 289           else                                                          \
 290             echo '$(ME): skipping $@: libc info not installed' 1>&2;    \
 291           fi;                                                           \
 292           rm -f $@-src $@-info;                                         \
 293         fi
 294
 295 # Indent only with spaces.
 296 sc_prohibit_tab_based_indentation:
 297         @prohibit='^ *  '                                               \
 298         halt='TAB in indentation; use only spaces'                      \
 299           $(_sc_search_regexp)
 300
 301 # The SEE ALSO section of a man page should not be terminated with
 302 # a period.  Check the first line after each "SEE ALSO" line in man/*.x:
 303 sc_prohibit_man_see_also_period:
 304         @grep -nB1 '\.$$' $$($(VC_LIST_EXCEPT) | grep 'man/.*\.x$$')    \
 305             | grep -A1 -e '-\[SEE ALSO\]' | grep '\.$$' &&              \
 306           { echo '$(ME): do not end "SEE ALSO" section with a period'   \
 307               1>&2; exit 1; } || :
 308
 309 # Don't use "indent-tabs-mode: nil" anymore.  No longer needed.
 310 sc_prohibit_emacs__indent_tabs_mode__setting:
 311         @prohibit='^( *[*#] *)?indent-tabs-mode:'                       \
 312         halt='use of emacs indent-tabs-mode: setting'                   \
 313           $(_sc_search_regexp)
 314
 315 # Ensure that tests don't include a redundant fail=0.
 316 sc_prohibit_fail_0:
 317         @prohibit='\<fail=0\>'                                          \
 318         halt='fail=0 initialization'                                    \
 319           $(_sc_search_regexp)
 320
 321 # The mode part of a setfacl -m option argument must be three bytes long.
 322 # I.e., an argument of user:bin:rw or user:bin:r will make Solaris 10's
 323 # setfacl reject it with: "Unrecognized character found in mode field".
 324 # Use hyphens to give it a length of 3: "...:rw-" or "...:r--".
 325 sc_prohibit_short_facl_mode_spec:
 326         @prohibit='\<setfacl .*-m.*:.*:[rwx-]{1,2} '                    \
 327         halt='setfacl mode string length < 3; extend with hyphen(s)'    \
 328           $(_sc_search_regexp)
 329
 330 # Ensure that "stdio--.h" is used where appropriate.
 331 sc_require_stdio_safer:
 332         @if $(VC_LIST_EXCEPT) | grep -l '\.[ch]$$' > /dev/null; then    \
 333           files=$$(grep -l '\bfreopen \?(' $$($(VC_LIST_EXCEPT)         \
 334               | grep '\.[ch]$$'));                                      \
 335           test -n "$$files" && grep -LE 'include "stdio--.h"' $$files   \
 336               | grep . &&                                               \
 337           { echo '$(ME): the above files should use "stdio--.h"'        \
 338                 1>&2; exit 1; } || :;                                   \
 339         else :;                                                         \
 340         fi
 341
 342 sc_prohibit_perl_hash_quotes:
 343         @prohibit="\{'[A-Z_]+' *[=}]"                                   \
 344         halt="in Perl code, write \$$hash{KEY}, not \$$hash{'K''EY'}"   \
 345           $(_sc_search_regexp)
 346
 347 # Prefer xnanosleep over other less-precise sleep methods
 348 sc_prohibit_sleep:
 349         @prohibit='\<(nano|u)?sleep \('                                 \
 350         halt='prefer xnanosleep over other sleep interfaces'            \
 351           $(_sc_search_regexp)
 352
 353 # Use print_ver_ (from init.cfg), not open-coded $VERBOSE check.
 354 sc_prohibit_verbose_version:
 355         @prohibit='test "\$$VERBOSE" = yes && .* --version'             \
 356         halt='use the print_ver_ function instead...'                   \
 357           $(_sc_search_regexp)
 358
 359 # Use framework_failure_, not the old name without the trailing underscore.
 360 sc_prohibit_framework_failure:
 361         @prohibit='\<framework_''failure\>'                             \
 362         halt='use framework_failure_ instead'                           \
 363           $(_sc_search_regexp)
 364
 365 # Prohibit the use of `...` in tests/.  Use $(...) instead.
 366 sc_prohibit_test_backticks:
 367         @prohibit='`' in_vc_files='^tests/'                             \
 368         halt='use $$(...), not `...` in tests/'                         \
 369           $(_sc_search_regexp)
 370
 371 # Programs like sort, ls, expr use PROG_FAILURE in place of EXIT_FAILURE.
 372 # Others, use the EXIT_CANCELED, EXIT_ENOENT, etc. macros defined in system.h.
 373 # In those programs, ensure that EXIT_FAILURE is not used by mistake.
 374 sc_some_programs_must_avoid_exit_failure:
 375         @grep -nw EXIT_FAILURE                                          \
 376             $$(git grep -El '[^T]_FAILURE|EXIT_CANCELED' src)           \
 377           | grep -vE '= EXIT_FAILURE|exit \(.* \?' | grep .             \
 378             && { echo '$(ME): do not use EXIT_FAILURE in the above'     \
 379                   1>&2; exit 1; } || :
 380
 381 # Ensure that tests call the print_ver_ function for programs which are
 382 # actually used in that test.
 383 sc_prohibit_test_calls_print_ver_with_irrelevant_argument:
 384         @git grep -w print_ver_ tests                                   \
 385           | sed 's#:print_ver_##'                                       \
 386           | { fail=0;                                                   \
 387               while read file name; do                                  \
 388                 for i in $$name; do                                     \
 389                   case "$$i" in install) i=ginstall;; esac;             \
 390                   grep -w "$$i" $$file|grep -vw print_ver_|grep -q .    \
 391                     || { fail=1;                                        \
 392                          echo "*** Test: $$file, offending: $$i." 1>&2; };\
 393                 done;                                                   \
 394               done;                                                     \
 395               test $$fail = 0 || exit 1;                                \
 396             } || { echo "$(ME): the above test(s) call print_ver_ for"  \
 397                     "program(s) they don't use" 1>&2; exit 1; }
 398
 399 # Exempt the contents of any usage function from the following.
 400 _continued_string_col_1 = \
 401 s/^usage .*?\n}//ms;/\\\n\w/ and print ("$$ARGV\n"),$$e=1;END{$$e||=0;exit $$e}
 402 # Ding any source file that has a continued string with an alphabetic in the
 403 # first column of the following line.  We prohibit them because they usually
 404 # trigger false positives in tools that try to map an arbitrary line number
 405 # to the enclosing function name.  Of course, very many strings do precisely
 406 # this, *when they are part of the usage function*.  That is why we exempt
 407 # the contents of any function named "usage".
 408 sc_prohibit_continued_string_alpha_in_column_1:
 409         @perl -0777 -ne '$(_continued_string_col_1)' \
 410             $$($(VC_LIST_EXCEPT) | grep '\.[ch]$$') \
 411           || { echo '$(ME): continued string with word in first column' \
 412                 1>&2; exit 1; } || :
 413 # Use this to list offending lines:
 414 # git ls-files |grep '\.[ch]$' | xargs \
 415 #   perl -n -0777 -e 's/^usage.*?\n}//ms;/\\\n\w/ and print "$ARGV\n"' \
 416 #     | xargs grep -A1 '\\$'|grep '\.[ch][:-][_a-zA-Z]'
 417
 418
 419 ###########################################################
 420 _p0 = \([^"'/]\|"\([^\"]\|[\].\)*"\|'\([^\']\|[\].\)*'
 421 _pre = $(_p0)\|[/][^"'/*]\|[/]"\([^\"]\|[\].\)*"\|[/]'\([^\']\|[\].\)*'\)*
 422 _pre_anchored = ^\($(_pre)\)
 423 _comment_and_close = [^*]\|[*][^/*]\)*[*][*]*/
 424 # help font-lock mode: '
 425
 426 # A sed expression that removes ANSI C and ISO C99 comments.
 427 # Derived from the one in GNU gettext's 'moopp' preprocessor.
 428 _sed_remove_comments =                                  \
 429 /[/][/*]/{                                              \
 430   ta;                                                   \
 431   :a;                                                   \
 432   s,$(_pre_anchored)//.*,\1,;                           \
 433   te;                                                   \
 434   s,$(_pre_anchored)/[*]\($(_comment_and_close),\1 ,;   \
 435   ta;                                                   \
 436   /^$(_pre)[/][*]/{                                     \
 437     s,$(_pre_anchored)/[*].*,\1 ,;                      \
 438     tu;                                                 \
 439     :u;                                                 \
 440     n;                                                  \
 441     s,^\($(_comment_and_close),,;                       \
 442     tv;                                                 \
 443     s,^.*$$,,;                                          \
 444     bu;                                                 \
 445     :v;                                                 \
 446   };                                                    \
 447   :e;                                                   \
 448 }
 449 # Quote all single quotes.
 450 _sed_rm_comments_q = $(subst ','\'',$(_sed_remove_comments))
 451 # help font-lock mode: '
 452
 453 _space_before_paren_exempt =? \\n\\$$
 454 _space_before_paren_exempt = \
 455   (^ *\#|\\n\\$$|%s\(to %s|(date|group|character)\(s\))
 456 # Ensure that there is a space before each open parenthesis in C code.
 457 sc_space_before_open_paren:
 458         @if $(VC_LIST_EXCEPT) | grep -l '\.[ch]$$' > /dev/null; then    \
 459           fail=0;                                                       \
 460           for c in $$($(VC_LIST_EXCEPT) | grep '\.[ch]$$'); do          \
 461             sed '$(_sed_rm_comments_q)' $$c 2>/dev/null                 \
 462               | grep -i '[[:alnum:]]('                                  \
 463               | grep -vE '$(_space_before_paren_exempt)'                \
 464               | grep . && { fail=1; echo "*** $$c"; };                  \
 465           done;                                                         \
 466           test $$fail = 1 &&                                            \
 467             { echo '$(ME): the above files lack a space-before-open-paren' \
 468                 1>&2; exit 1; } || :;                                   \
 469         else :;                                                         \
 470         fi
 471
 472 # Similar to the gnulib maint.mk rule for sc_prohibit_strcmp
 473 # Use STREQ_LEN or STRPREFIX rather than comparing strncmp == 0, or != 0.
 474 sc_prohibit_strncmp:
 475         @grep -nE '! *str''ncmp *\(|\<str''ncmp *\(.+\) *[!=]='         \
 476             $$($(VC_LIST_EXCEPT))                                       \
 477           | grep -vE ':# *define STR(N?EQ_LEN|PREFIX)\(' &&             \
 478           { echo '$(ME): use STREQ_LEN or STRPREFIX instead of str''ncmp' \
 479                 1>&2; exit 1; } || :
 480
 481 # Enforce recommended preprocessor indentation style.
 482 sc_preprocessor_indentation:
 483         @if cppi --version >/dev/null 2>&1; then                        \
 484           $(VC_LIST_EXCEPT) | grep '\.[ch]$$' | xargs cppi -a -c        \
 485             || { echo '$(ME): incorrect preprocessor indentation' 1>&2; \
 486                 exit 1; };                                              \
 487         else                                                            \
 488           echo '$(ME): skipping test $@: cppi not installed' 1>&2;      \
 489         fi
 490
 491 # THANKS.in is a list of name/email pairs for people who are mentioned in
 492 # commit logs (and generated ChangeLog), but who are not also listed as an
 493 # author of a commit.  Name/email pairs of commit authors are automatically
 494 # extracted from the repository.  As a very minor factorization, when
 495 # someone who was initially listed only in THANKS.in later authors a commit,
 496 # this rule detects that their pair may now be removed from THANKS.in.
 497 sc_THANKS_in_duplicates:
 498         @{ git log --pretty=format:%aN | sort -u;                       \
 499             cut -b-36 THANKS.in | sed '/^$$/d;s/  *$$//'; }             \
 500           | sort | uniq -d | grep .                                     \
 501             && { echo '$(ME): remove the above names from THANKS.in'    \
 502                   1>&2; exit 1; } || :
 503
 504 # Override the default Cc: used in generating an announcement.
 505 announcement_Cc_ = $(translation_project_), \
 506   coreutils@gnu.org, coreutils-announce@gnu.org
 507
 508 -include $(srcdir)/dist-check.mk
 509
 510 update-copyright-env = \
 511   UPDATE_COPYRIGHT_FORCE=1 \
 512   UPDATE_COPYRIGHT_USE_INTERVALS=2 \
 513   UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
 514
 515 # List syntax-check exemptions.
 516 exclude_file_name_regexp--sc_space_tab = \
 517   ^(tests/pr/|tests/misc/nl\.sh$$|gl/.*\.diff$$)
 518 exclude_file_name_regexp--sc_bindtextdomain = ^(gl/.*|lib/euidaccess-stat)\.c$$
 519 exclude_file_name_regexp--sc_trailing_blank = ^tests/pr/
 520 exclude_file_name_regexp--sc_system_h_headers = \
 521   ^src/((system|copy)\.h|libstdbuf\.c)$$
 522
 523 _src = (false|lbracket|ls-(dir|ls|vdir)|tac-pipe|uname-(arch|uname))
 524 exclude_file_name_regexp--sc_require_config_h_first = \
 525   (^lib/buffer-lcm\.c|src/$(_src)\.c)$$
 526 exclude_file_name_regexp--sc_require_config_h = \
 527   $(exclude_file_name_regexp--sc_require_config_h_first)
 528
 529 exclude_file_name_regexp--sc_po_check = ^gl/
 530 exclude_file_name_regexp--sc_prohibit_always-defined_macros = \
 531   ^src/(seq|remove)\.c$$
 532 exclude_file_name_regexp--sc_prohibit_empty_lines_at_EOF = ^tests/pr/
 533 exclude_file_name_regexp--sc_program_name = ^(gl/.*|lib/euidaccess-stat)\.c$$
 534 exclude_file_name_regexp--sc_file_system = \
 535   NEWS|^(init\.cfg|src/df\.c|tests/df/df-P\.sh)$$
 536 exclude_file_name_regexp--sc_prohibit_always_true_header_tests = \
 537   ^m4/stat-prog\.m4$$
 538 exclude_file_name_regexp--sc_prohibit_fail_0 = \
 539   (^.*/git-hooks/commit-msg|^tests/init\.sh|Makefile\.am|\.mk|.*\.texi)$$
 540 exclude_file_name_regexp--sc_prohibit_atoi_atof = ^lib/euidaccess-stat\.c$$
 541
 542 tbi_1 = ^tests/pr/|(^gl/lib/reg.*\.c\.diff|\.mk|^man/help2man)$$
 543 tbi_2 = ^scripts/git-hooks/(pre-commit|pre-applypatch|applypatch-msg)$$
 544 tbi_3 = (GNU)?[Mm]akefile(\.am)?$$
 545 exclude_file_name_regexp--sc_prohibit_tab_based_indentation = \
 546   $(tbi_1)|$(tbi_2)|$(tbi_3)
 547
 548 exclude_file_name_regexp--sc_preprocessor_indentation = \
 549   ^(gl/lib/rand-isaac\.[ch]|gl/tests/test-rand-isaac\.c)$$
 550 exclude_file_name_regexp--sc_prohibit_stat_st_blocks = \
 551   ^(src/system\.h|tests/du/2g\.sh)$$
 552
 553 exclude_file_name_regexp--sc_prohibit_continued_string_alpha_in_column_1 = \
 554   ^src/(system\.h|od\.c|printf\.c)$$
 555
 556 exclude_file_name_regexp--sc_prohibit_test_backticks = \
 557   ^tests/(init\.sh|local.mk|misc/stdbuf\.sh)$$
 558
 559 # Exempt test.c, since it's nominally shared, and relatively static.
 560 exclude_file_name_regexp--sc_prohibit_operator_at_end_of_line = \
 561   ^src/(ptx|test|head)\.c$$
 562
 563 # Augment AM_CFLAGS to include our per-directory options:
 564 AM_CFLAGS += $($(@D)_CFLAGS)
 565
 566 src_CFLAGS = $(WARN_CFLAGS)
 567 lib_CFLAGS = $(GNULIB_WARN_CFLAGS)
 568 gnulib-tests_CFLAGS = $(GNULIB_TEST_WARN_CFLAGS)
 569
 570 # Configuration to make the tight-scope syntax-check rule work with
 571 # non-recursive make.
 572 export _gl_TS_headers = $(srcdir)/cfg.mk
 573 _gl_TS_dir = .
 574 _gl_TS_obj_files = src/*.$(OBJEXT)
 575 _gl_TS_other_headers = src/*.h