cfg.mk

   1 # Customize maint.mk                           -*- makefile -*-
   2 # Copyright (C) 2003-2019 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 <https://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 = https://ftp.gnu.org/gnu/$(PACKAGE)
  23
  24 # Exclude bundled external projects from syntax checks
  25 VC_LIST_ALWAYS_EXCLUDE_REGEX = src/blake2/.*$$
  26
  27 # Tests not to run as part of "make distcheck".
  28 local-checks-to-skip = \
  29   sc_proper_name_utf8_requires_ICONV
  30
  31 # Tools used to bootstrap this package, used for "announcement".
  32 bootstrap-tools = autoconf,automake,gnulib,bison
  33
  34 # Now that we have better tests, make this the default.
  35 export VERBOSE = yes
  36
  37 # Comparing tarball sizes compressed using different xz presets, we see that
  38 # an -8e-compressed tarball is only 9KiB larger than the -9e-compressed one.
  39 # Using -8e is preferred, since that lets the decompression process use half
  40 # the memory (32MiB rather than 64MiB).
  41 # $ for i in {7,8,9}{e,}; do \
  42 #     (n=$(xz -$i < coreutils-8.15*.tar|wc -c);echo $n $i) & done |sort -nr
  43 # 5129388 7
  44 # 5036524 7e
  45 # 5017476 8
  46 # 5010604 9
  47 # 4923016 8e
  48 # 4914152 9e
  49 export XZ_OPT = -8e
  50
  51 old_NEWS_hash = 79133b52351baf64693804eed58a0cbc
  52
  53 # Add an exemption for sc_makefile_at_at_check.
  54 _makefile_at_at_check_exceptions = ' && !/^cu_install_prog/ && !/dynamic-dep/'
  55
  56 # Our help-version script is in a slightly different location.
  57 _hv_file ?= $(srcdir)/tests/misc/help-version
  58
  59 # Ensure that the list of O_ symbols used to compute O_FULLBLOCK is complete.
  60 dd = $(srcdir)/src/dd.c
  61 sc_dd_O_FLAGS:
  62         @rm -f $@.1 $@.2
  63         @{ echo O_FULLBLOCK; echo O_NOCACHE;                            \
  64           perl -nle '/^ +\| (O_\w*)$$/ and print $$1' $(dd); } | sort > $@.1
  65         @{ echo O_NOFOLLOW; perl -nle '/{"[a-z]+",\s*(O_\w+)},/ and print $$1' \
  66           $(dd); } | sort > $@.2
  67         @diff -u $@.1 $@.2; diff=$$?;                                   \
  68         rm -f $@.1 $@.2;                                                \
  69         test "$$diff" = 0                                               \
  70           || { echo '$(ME): $(dd) has inconsistent O_ flag lists'>&2;   \
  71                exit 1; }
  72
  73 # Ensure that dd's definition of LONGEST_SYMBOL stays in sync
  74 # with the strings from the two affected variables.
  75 dd_c = $(srcdir)/src/dd.c
  76 sc_dd_max_sym_length:
  77 ifneq ($(wildcard $(dd_c)),)
  78         @len=$$( (sed -n '/conversions\[\] =$$/,/^};/p' $(dd_c);\
  79                  sed -n '/flags\[\] =$$/,/^};/p' $(dd_c) )      \
  80                 |sed -n '/"/s/^[^"]*"\([^"]*\)".*/\1/p'| wc -L);\
  81         max=$$(sed -n '/^#define LONGEST_SYMBOL /s///p' $(dd_c) \
  82               |tr -d '"' | wc -L);              \
  83         if test "$$len" = "$$max"; then :; else                 \
  84           echo 'dd.c: LONGEST_SYMBOL is not longest' 1>&2;      \
  85           exit 1;                                               \
  86         fi
  87 endif
  88
  89 # Many m4 macros names once began with 'jm_'.
  90 # On 2004-04-13, they were all changed to start with gl_ instead.
  91 # Make sure that none are inadvertently reintroduced.
  92 sc_prohibit_jm_in_m4:
  93         @grep -nE 'jm_[A-Z]'                                            \
  94                 $$($(VC_LIST) m4 |grep '\.m4$$'; echo /dev/null) &&     \
  95             { echo '$(ME): do not use jm_ in m4 macro names'            \
  96               1>&2; exit 1; } || :
  97
  98 # Ensure that each root-requiring test is run via the "check-root" rule.
  99 sc_root_tests:
 100         @t1=sc-root.expected; t2=sc-root.actual;                        \
 101         grep -nl '^ *require_root_$$' `$(VC_LIST) tests` |              \
 102           sed 's|.*/tests/|tests/|' | sort > $$t1;                      \
 103         for t in $(all_root_tests); do echo $$t; done | sort > $$t2;    \
 104         st=0; diff -u $$t1 $$t2 || st=1;                                \
 105         rm -f $$t1 $$t2;                                                \
 106         exit $$st
 107
 108 # Ensure that all version-controlled test cases are listed in $(all_tests).
 109 sc_tests_list_consistency:
 110         @bs="\\";                                                       \
 111         test_extensions_rx=`echo $(TEST_EXTENSIONS)                     \
 112           | sed -e "s/ /|/g" -e "s/$$bs./$$bs$$bs./g"`;                 \
 113         {                                                               \
 114           for t in $(all_tests); do echo $$t; done;                     \
 115           cd $(top_srcdir);                                             \
 116           $(SHELL) build-aux/vc-list-files tests                        \
 117             | grep -Ev '^tests/(factor/(run|create-test)|init)\.sh$$'   \
 118             | $(EGREP) "$$test_extensions_rx\$$";                       \
 119         } | sort | uniq -u | grep . && exit 1; :
 120
 121 # Ensure that all version-controlled test scripts are executable.
 122 sc_tests_executable:
 123         @set -o noglob 2>/dev/null || set -f;                              \
 124         find_ext="-name '' "`printf -- "-o -name *%s " $(TEST_EXTENSIONS)`;\
 125         find $(srcdir)/tests/ \( $$find_ext \) \! -perm -u+x -print        \
 126           | { sed "s|^$(srcdir)/||"; git ls-files $(srcdir)/tests/; }      \
 127           | sort | uniq -d                                                 \
 128           | sed -e "s/^/$(ME): Please make test executable: /" | grep .    \
 129             && exit 1; :
 130
 131 # Ensure all gnulib patches apply cleanly
 132 sc_ensure_gl_diffs_apply_cleanly:
 133         @find $(srcdir)/gl/ -name '*.diff' | while read p; do           \
 134           patch --fuzz=0 -f -s -d $(srcdir)/gnulib/ -p1 --dry-run < "$$p" >&2 \
 135             || { echo "$$p" >&2; echo 'To refresh all gl patches run:'  \
 136                  'make refresh-gnulib-patches' >&2; exit 1; }           \
 137         done
 138
 139 # Avoid :>file which doesn't propagate errors
 140 sc_prohibit_colon_redirection:
 141         @cd $(srcdir)/tests && GIT_PAGER= git grep -n ': *>.*||' \
 142           && { echo '$(ME): '"The leading colon in :> will hide errors" 1>&2; \
 143                exit 1; }  \
 144           || :
 145
 146 # Ensure emit_mandatory_arg_note() is called if required
 147 sc_ensure_emit_mandatory_arg_note:
 148         @cd $(srcdir)/src && GIT_PAGER= git \
 149           grep -l -- '^ *-[^-].*--.*[^[]=' *.c \
 150           | xargs grep -L emit_mandatory_arg_note | grep . \
 151           && { echo '$(ME): '"emit_mandatory_arg_note() missing" 1>&2; \
 152                exit 1; } || :
 153
 154 # Create a list of regular expressions matching the names
 155 # of files included from system.h.  Exclude a couple.
 156 .re-list:
 157         @sed -n '/^# *include /s///p' $(srcdir)/src/system.h \
 158           | grep -Ev 'sys/(param|file)\.h' \
 159           | sed 's/ .*//;;s/^["<]/^# *include [<"]/;s/\.h[">]$$/\\.h[">]/' \
 160           > $@-t
 161         @mv $@-t $@
 162
 163 define gl_trap_
 164   Exit () { set +e; (exit $$1); exit $$1; };                            \
 165   for sig in 1 2 3 13 15; do                                            \
 166     eval "trap 'Exit $$(expr $$sig + 128)' $$sig";                      \
 167   done
 168 endef
 169
 170 # Files in src/ should not include directly any of
 171 # the headers already included via system.h.
 172 sc_system_h_headers: .re-list
 173         @if test -f $(srcdir)/src/system.h; then                        \
 174           trap 'rc=$$?; rm -f .re-list; exit $$rc' 0;                   \
 175           $(gl_trap_);                                                  \
 176           grep -nE -f .re-list                                          \
 177               $$($(VC_LIST_EXCEPT) | grep '^\($(srcdir)/\)\?src/')      \
 178             && { echo '$(ME): the above are already included via system.h'\
 179                   1>&2;  exit 1; } || :;                                \
 180         fi
 181
 182 # Files in src/ should not use '%s' notation in format strings,
 183 # i.e., single quotes around %s (or similar) should be avoided.
 184 sc_prohibit_quotes_notation:
 185         @cd $(srcdir)/src && GIT_PAGER= git grep -n "\".*[\`']%s'.*\"" *.c \
 186           && { echo '$(ME): '"Use quote() to avoid quoted '%s' notation" 1>&2; \
 187                exit 1; }  \
 188           || :
 189
 190 # Files in src/ should quote all strings in error() output, so that
 191 # unexpected input chars like \r etc. don't corrupt the error.
 192 # In edge cases this can be avoided by putting the format string
 193 # on a separate line to the following arguments.
 194 sc_error_quotes:
 195         @cd $(srcdir)/src && GIT_PAGER= git grep -n 'error *(.*%s.*, [^(]*);$$'\
 196           *.c | grep -v ', q' \
 197           && { echo '$(ME): '"Use quote() for error string arguments" 1>&2; \
 198                exit 1; }  \
 199           || :
 200
 201 # Files in src/ should quote all file names in error() output
 202 # using quotef(), to provide quoting only when necessary,
 203 # but also provide better support for copy and paste when used.
 204 sc_error_shell_quotes:
 205         @cd $(srcdir)/src && \
 206           { GIT_PAGER= git grep -E \
 207             'error \(.*%s[:"], .*(name|file)[^"]*\);$$' *.c; \
 208             GIT_PAGER= git grep -E \
 209             ' quote[ _].*file' *.c; } \
 210           | grep -Ev '(quotef|q[^ ]*name)' \
 211           && { echo '$(ME): '"Use quotef() for colon delimited names" 1>&2; \
 212                exit 1; }  \
 213           || :
 214
 215 # Files in src/ should quote all file names in error() output
 216 # using quoteaf() when the name is separated with spaces,
 217 # to distinguish the file name at issue and
 218 # to provide better support for copy and paste.
 219 sc_error_shell_always_quotes:
 220         @cd $(srcdir)/src && GIT_PAGER= git grep -E \
 221             'error \(.*[^:] %s[ "].*, .*(name|file)[^"]*\);$$' \
 222             *.c | grep -Ev '(quoteaf|q[^ ]*name)' \
 223           && { echo '$(ME): '"Use quoteaf() for space delimited names" 1>&2; \
 224                exit 1; }  \
 225           || :
 226         @cd $(srcdir)/src && GIT_PAGER= git grep -E -A1 \
 227             'error \([^%]*[^:] %s[ "]' *.c | grep 'quotef' \
 228           && { echo '$(ME): '"Use quoteaf() for space delimited names" 1>&2; \
 229                exit 1; }  \
 230           || :
 231
 232 # Usage of error() with an exit constant, should instead use die(),
 233 # as that avoids warnings and may generate better code, due to being apparent
 234 # to the compiler that it doesn't return.
 235 sc_die_EXIT_FAILURE:
 236         @cd $(srcdir)/src && GIT_PAGER= git grep -E \
 237             'error \(.*_(FAILURE|INVALID)' \
 238           && { echo '$(ME): '"Use die() instead of error" 1>&2; \
 239                exit 1; }  \
 240           || :
 241
 242 # Avoid unstyled quoting to internal slots and thus destined for diagnostics
 243 # as that can leak unescaped control characters to the output, when using
 244 # the default "literal" quoting style.
 245 # Instead use quotef(), or quoteaf() or in edge cases quotearg_n_style_colon().
 246 # A more general PCRE would be @prohibit='quotearg_.*(?!(style|buffer))'
 247 sc_prohibit-quotearg:
 248         @prohibit='quotearg(_n)?(|_colon|_char|_mem) ' \
 249         in_vc_files='\.c$$' \
 250         halt='Unstyled diagnostic quoting detected' \
 251           $(_sc_search_regexp)
 252
 253 sc_prohibit-skip:
 254         @prohibit='\|\| skip ' \
 255         halt='Use skip_ not skip' \
 256           $(_sc_search_regexp)
 257
 258 sc_sun_os_names:
 259         @grep -nEi \
 260             'solaris[^[:alnum:]]*2\.(7|8|9|[1-9][0-9])|sunos[^[:alnum:]][6-9]' \
 261             $$($(VC_LIST_EXCEPT)) &&                                    \
 262           { echo '$(ME): found misuse of Sun OS version numbers' 1>&2;  \
 263             exit 1; } || :
 264
 265 # Ensure that the list of programs and author names is accurate.
 266 # We need a UTF8 locale.  If a lack of locale support or a missing
 267 # translation inhibits printing of UTF-8 names, just skip this test.
 268 au_dotdot = authors-dotdot
 269 au_actual = authors-actual
 270 sc_check-AUTHORS: $(all_programs)
 271         @locale=en_US.UTF-8;                            \
 272         LC_ALL=$$locale ./src/factor --version          \
 273             | grep ' Torbjorn ' > /dev/null             \
 274           && { echo "$@: skipping this check"; exit 0; }; \
 275         rm -f $(au_actual) $(au_dotdot);                \
 276         for i in `ls $(all_programs)                    \
 277             | sed -e 's,^src/,,' -e 's,$(EXEEXT)$$,,'   \
 278             | sed /libstdbuf/d                          \
 279             | $(ASSORT) -u`; do                         \
 280           test "$$i" = '[' && continue;                 \
 281           exe=$$i;                                      \
 282           if test "$$i" = install; then                 \
 283             exe=ginstall;                               \
 284           elif test "$$i" = test; then                  \
 285             exe='[';                                    \
 286           fi;                                           \
 287           LC_ALL=$$locale ./src/$$exe --version         \
 288             | perl -0 -p -e 's/,\n/, /gm'               \
 289             | sed -n -e '/Written by /{ s//'"$$i"': /;' \
 290                   -e 's/,* and /, /; s/\.$$//; p; }';   \
 291         done > $(au_actual) &&                          \
 292         sed -n '/^[^ ][^ ]*:/p' $(srcdir)/AUTHORS > $(au_dotdot) \
 293           && diff $(au_actual) $(au_dotdot) \
 294           && rm -f $(au_actual) $(au_dotdot)
 295
 296 # Each program with a non-ASCII author name must link with LIBICONV.
 297 sc_check-I18N-AUTHORS:
 298         @cd $(srcdir)/src &&                                            \
 299           for i in $$(git grep -l -w proper_name_utf8 *.c|sed 's/\.c//'); do \
 300             grep -E "^src_$${i}_LDADD"' .?= .*\$$\(LIBICONV\)' local.mk \
 301                 > /dev/null                                             \
 302               || { echo "$(ME): link rules for $$i do not include"      \
 303                     '$$(LIBICONV)' 1>&2; exit 1; };                     \
 304           done
 305
 306 # Disallow the C99 printf size specifiers %z and %j as they're not portable.
 307 # The gnulib printf replacement does support them, however the printf
 308 # replacement is not currently explicitly depended on by the gnulib error()
 309 # module for example.  Also we use fprintf() in a few places to output simple
 310 # formats but don't use the gnulib module as it is seen as overkill at present.
 311 # We'd have to adjust the above gnulib items before disabling this.
 312 sc_prohibit-c99-printf-format:
 313         @cd $(srcdir)/src && GIT_PAGER= git grep -n '%[0*]*[jz][udx]' *.c    \
 314           && { echo '$(ME): Use PRI*MAX instead of %j or %z' 1>&2; exit 1; } \
 315           || :
 316
 317 # Ensure the alternative __attribute (keyword) form isn't used as
 318 # that form is not elided where required.  Also ensure that we don't
 319 # directly use attributes already defined by gnulib.
 320 # TODO: move the check for _GL... attributes to gnulib.
 321 sc_prohibit-gl-attributes:
 322         @prohibit='__attribute |__(unused|pure|const)__'        \
 323         in_vc_files='\.[ch]$$'                                  \
 324         halt='Use _GL... attribute macros'                      \
 325           $(_sc_search_regexp)
 326
 327 # Look for lines longer than 80 characters, except omit:
 328 # - urls
 329 # - the help2man script copied from upstream,
 330 # - tests involving long checksum lines, and
 331 # - the 'pr' test cases.
 332 FILTER_LONG_LINES =                                             \
 333   \|^[^:]*NEWS:.*https\{,1\}://| d;                                     \
 334   \|^[^:]*man/help2man:| d;                                     \
 335   \|^[^:]*tests/misc/sha[0-9]*sum.*\.pl[-:]| d;                 \
 336   \|^[^:]*tests/pr/|{ \|^[^:]*tests/pr/pr-tests:| !d; };
 337 sc_long_lines:
 338         @wc -L /dev/null >/dev/null 2>/dev/null                         \
 339            || { echo "$@: skipping: wc -L not supported"; exit 0; };    \
 340         sed -r 1q /dev/null 2>/dev/null                                 \
 341            || { echo "$@: skipping: sed -r not supported"; exit 0; };   \
 342         files=$$($(VC_LIST_EXCEPT) | xargs wc -L | sed -rn '/ total$$/d;\
 343                   s/^ *(8[1-9]|9[0-9]|[0-9]{3,}) //p');                 \
 344         halt='line(s) with more than 80 characters; reindent';          \
 345         for file in $$files; do                                         \
 346           expand $$file | grep -nE '^.{80}.' |                          \
 347           sed -e "s|^|$$file:|" -e '$(FILTER_LONG_LINES)';              \
 348         done | grep . && { msg="$$halt" $(_sc_say_and_exit) } || :
 349
 350 # Option descriptions should not start with a capital letter.
 351 # One could grep source directly as follows:
 352 # grep -E " {2,6}-.*[^.]  [A-Z][a-z]" $$($(VC_LIST_EXCEPT) | grep '\.c$$')
 353 # but that would miss descriptions not on the same line as the -option.
 354 sc_option_desc_uppercase: $(ALL_MANS)
 355         @grep '^\\fB\\-' -A1 man/*.1 | LC_ALL=C grep '\.1.[A-Z][a-z]'   \
 356           && { echo 1>&2 '$@: found initial capitals in --help'; exit 1; } || :
 357
 358 # Ensure all man/*.[1x] files are present.
 359 sc_man_file_correlation: check-x-vs-1 check-programs-vs-x
 360
 361 # Ensure that for each .x file in the 'man/' subdirectory, there is a
 362 # corresponding .1 file in the definition of $(EXTRA_MANS).
 363 # But since that expansion usually lacks programs like arch and hostname,
 364 # add them here manually.
 365 .PHONY: check-x-vs-1
 366 check-x-vs-1:
 367         @PATH=./src$(PATH_SEPARATOR)$$PATH; export PATH;                \
 368         t=$@-t;                                                         \
 369         (cd $(srcdir)/man && ls -1 *.x)                                 \
 370           | sed 's/\.x$$//' | $(ASSORT) > $$t;                          \
 371         (echo $(patsubst man/%,%,$(ALL_MANS))                           \
 372           | tr -s ' ' '\n' | sed 's/\.1$$//')                           \
 373           | $(ASSORT) -u | diff - $$t || { rm $$t; exit 1; };           \
 374         rm $$t
 375
 376 # Ensure that non-trivial .x files in the 'man/' subdirectory,
 377 # i.e., files exceeding a line count of 20 or a byte count of 1000,
 378 # contain a Copyright notice.
 379 .PHONY: sc_man_check_x_copyright
 380 sc_man_check_x_copyright:
 381         @status=0;                                                      \
 382         cd $(srcdir) && wc -cl man/*.x | head -n-1                      \
 383           | awk '$$1 >= 20 || $$2 >= 1000 {print $$3}'                  \
 384           | xargs grep -L 'Copyright .* Free Software Foundation'       \
 385           | grep .                                                      \
 386           && { echo  1>&2 '$@: exceeding file size/line count limit'    \
 387                   '- please add a copyright note'; status=1; };         \
 388         exit $$status
 389
 390 # Writing a portable rule to generate a manpage like '[.1' would be
 391 # a nightmare, so filter that out.
 392 all-progs-but-lbracket = $(filter-out [,$(patsubst src/%,%,$(all_programs)))
 393
 394 # Ensure that for each coreutils program there is a corresponding
 395 # '.x' file in the 'man/' subdirectory.
 396 .PHONY: check-programs-vs-x
 397 check-programs-vs-x:
 398         @status=0;                                      \
 399         for p in dummy $(all-progs-but-lbracket); do    \
 400           case $$p in *.so) continue;; esac;            \
 401           test $$p = dummy && continue;                 \
 402           test $$p = ginstall && p=install || : ;       \
 403           test -f $(srcdir)/man/$$p.x                   \
 404             || { echo missing $$p.x 1>&2; status=1; };  \
 405         done;                                           \
 406         exit $$status
 407
 408 # Ensure we can check out on case insensitive file systems
 409 sc_case_insensitive_file_names: src/uniq
 410         @git ls-files | sort -f | src/uniq -Di | grep . && \
 411           { echo "$(ME): the above file(s) conflict on case insensitive" \
 412           " file systems" 1>&2; exit 1; } || :
 413
 414 # Ensure that the end of each release's section is marked by two empty lines.
 415 sc_NEWS_two_empty_lines:
 416         @sed -n 4,/Noteworthy/p $(srcdir)/NEWS                          \
 417             | perl -n0e '/(^|\n)\n\n\* Noteworthy/ or exit 1'           \
 418           || { echo '$(ME): use two empty lines to separate NEWS sections' \
 419                  1>&2; exit 1; } || :
 420
 421 # With split lines, don't leave an operator at end of line.
 422 # Instead, put it on the following line, where it is more apparent.
 423 # Don't bother checking for "*" at end of line, since it provokes
 424 # far too many false positives, matching constructs like "TYPE *".
 425 # Similarly, omit "=" (initializers).
 426 binop_re_ ?= [-/+^!<>]|[-/+*^!<>=]=|&&?|\|\|?|<<=?|>>=?
 427 sc_prohibit_operator_at_end_of_line:
 428         @prohibit='. ($(binop_re_))$$'                                  \
 429         in_vc_files='\.[chly]$$'                                        \
 430         halt='found operator at end of line'                            \
 431           $(_sc_search_regexp)
 432
 433 # Don't use "readlink" or "readlinkat" directly
 434 sc_prohibit_readlink:
 435         @prohibit='\<readlink(at)? \('                                  \
 436         halt='do not use readlink(at); use via xreadlink or areadlink*' \
 437           $(_sc_search_regexp)
 438
 439 # Don't use address of "stat" or "lstat" functions
 440 sc_prohibit_stat_macro_address:
 441         @prohibit='\<l?stat '':|&l?stat\>'                              \
 442         halt='stat() and lstat() may be function-like macros'           \
 443           $(_sc_search_regexp)
 444
 445 # Ensure that date's --help output stays in sync with the info
 446 # documentation for GNU strftime.  The only exception is %N and %q,
 447 # which date accepts but GNU strftime does not.
 448 extract_char = sed 's/^[^%][^%]*%\(.\).*/\1/'
 449 sc_strftime_check:
 450         @if test -f $(srcdir)/src/date.c; then                          \
 451           grep '^  %.  ' $(srcdir)/src/date.c | sort                    \
 452             | $(extract_char) > $@-src;                                 \
 453           { echo N; echo q;                                             \
 454             info libc date calendar format 2>/dev/null                  \
 455               | grep "^ *['\`]%.'$$"| $(extract_char); }| sort >$@-info;\
 456           if test $$(stat --format %s $@-info) != 2; then               \
 457             diff -u $@-src $@-info || exit 1;                           \
 458           else                                                          \
 459             echo '$(ME): skipping $@: libc info not installed' 1>&2;    \
 460           fi;                                                           \
 461           rm -f $@-src $@-info;                                         \
 462         fi
 463
 464 # Indent only with spaces.
 465 sc_prohibit_tab_based_indentation:
 466         @prohibit='^ *  '                                               \
 467         halt='TAB in indentation; use only spaces'                      \
 468           $(_sc_search_regexp)
 469
 470 # Enforce lowercase 'e' in "I.e.".
 471 sc_prohibit_uppercase_id_est:
 472         @prohibit='I\.E\.'                                              \
 473         halt='Uppercase "Id Est" abbreviation; use "I.e.," instead'     \
 474           $(_sc_search_regexp)
 475
 476 # Enforce double-space before "I.e." at the beginning of a sentence.
 477 sc_ensure_dblspace_after_dot_before_id_est:
 478         @prohibit='\. I\.e\.'                                           \
 479         halt='Single space after dot before "i.e."; use ".  i.e." instead' \
 480           $(_sc_search_regexp)
 481
 482 # Enforce comma after "i.e." (at least before a blank or at EOL).
 483 sc_ensure_comma_after_id_est:
 484         @prohibit='[Ii]\.e\.( |$$)'                                     \
 485         halt='Missing comma after "i.e."; use "i.e.," instead'          \
 486           $(_sc_search_regexp)
 487
 488 # The SEE ALSO section of a man page should not be terminated with
 489 # a period.  Check the first line after each "SEE ALSO" line in man/*.x:
 490 sc_prohibit_man_see_also_period:
 491         @grep -nB1 '\.$$' $$($(VC_LIST_EXCEPT) | grep 'man/.*\.x$$')    \
 492             | grep -A1 -e '-\[SEE ALSO\]' | grep '\.$$' &&              \
 493           { echo '$(ME): do not end "SEE ALSO" section with a period'   \
 494               1>&2; exit 1; } || :
 495
 496 # Don't use "indent-tabs-mode: nil" anymore.  No longer needed.
 497 sc_prohibit_emacs__indent_tabs_mode__setting:
 498         @prohibit='^( *[*#] *)?indent-tabs-mode:'                       \
 499         halt='use of emacs indent-tabs-mode: setting'                   \
 500           $(_sc_search_regexp)
 501
 502 # Ensure that tests don't include a redundant fail=0.
 503 sc_prohibit_fail_0:
 504         @prohibit='\<fail=0\>'                                          \
 505         halt='fail=0 initialization'                                    \
 506           $(_sc_search_regexp)
 507
 508 # Ensure that tests don't use `cmd ... && fail=1` as that hides crashes.
 509 # The "exclude" expression allows common idioms like `test ... && fail=1`
 510 # and the 2>... portion allows commands that redirect stderr and so probably
 511 # independently check its contents and thus detect any crash messages.
 512 sc_prohibit_and_fail_1:
 513         @prohibit='&& fail=1'                                           \
 514         exclude='(returns_|stat|kill|test |EGREP|grep|compare|2> *[^/])' \
 515         halt='&& fail=1 detected. Please use: returns_ 1 ... || fail=1' \
 516         in_vc_files='^tests/'                                           \
 517           $(_sc_search_regexp)
 518
 519 # Ensure that env vars are not passed through returns_ as
 520 # that was seen to fail on FreeBSD /bin/sh at least
 521 sc_prohibit_env_returns:
 522         @prohibit='=[^ ]* returns_ '                                    \
 523         exclude='_ returns_ '                                           \
 524         halt='Passing env vars to returns_ is non portable'             \
 525         in_vc_files='^tests/'                                           \
 526           $(_sc_search_regexp)
 527
 528 # The mode part of a setfacl -m option argument must be three bytes long.
 529 # I.e., an argument of user:bin:rw or user:bin:r will make Solaris 10's
 530 # setfacl reject it with: "Unrecognized character found in mode field".
 531 # Use hyphens to give it a length of 3: "...:rw-" or "...:r--".
 532 sc_prohibit_short_facl_mode_spec:
 533         @prohibit='\<setfacl .*-m.*:.*:[rwx-]{1,2} '                    \
 534         halt='setfacl mode string length < 3; extend with hyphen(s)'    \
 535           $(_sc_search_regexp)
 536
 537 # Ensure that "stdio--.h" is used where appropriate.
 538 sc_require_stdio_safer:
 539         @if $(VC_LIST_EXCEPT) | grep -l '\.[ch]$$' > /dev/null; then    \
 540           files=$$(grep -l '\bfreopen \?(' $$($(VC_LIST_EXCEPT)         \
 541               | grep '\.[ch]$$'));                                      \
 542           test -n "$$files" && grep -LE 'include "stdio--.h"' $$files   \
 543               | grep . &&                                               \
 544           { echo '$(ME): the above files should use "stdio--.h"'        \
 545                 1>&2; exit 1; } || :;                                   \
 546         else :;                                                         \
 547         fi
 548
 549 sc_prohibit_perl_hash_quotes:
 550         @prohibit="\{'[A-Z_]+' *[=}]"                                   \
 551         halt="in Perl code, write \$$hash{KEY}, not \$$hash{'K''EY'}"   \
 552           $(_sc_search_regexp)
 553
 554 # Prefer xnanosleep over other less-precise sleep methods
 555 sc_prohibit_sleep:
 556         @prohibit='\<(nano|u)?sleep \('                                 \
 557         halt='prefer xnanosleep over other sleep interfaces'            \
 558           $(_sc_search_regexp)
 559
 560 # Use print_ver_ (from init.cfg), not open-coded $VERBOSE check.
 561 sc_prohibit_verbose_version:
 562         @prohibit='test "\$$VERBOSE" = yes && .* --version'             \
 563         halt='use the print_ver_ function instead...'                   \
 564           $(_sc_search_regexp)
 565
 566 # Enforce print_ver_ tracking of dependencies
 567 # Each coreutils specific program a test requires
 568 # should be tagged by calling through env(1).
 569 sc_env_test_dependencies:
 570         @cd $(top_srcdir) && GIT_PAGER= git grep -E \
 571             "env ($$(build-aux/gen-lists-of-programs.sh --list-progs | \
 572                 grep -vF '[' |paste -d'|' -s))" tests | \
 573             sed "s/\([^:]\):.*env \([^)' ]*\).*/\1 \2/" | uniq | \
 574             while read test prog; do \
 575               printf '%s' $$test | grep -q '\.pl$$' && continue; \
 576               grep -q "print_ver_.* $$prog" $$test \
 577                 || echo $$test should call: print_ver_ $$prog; \
 578             done | grep . && exit 1 || :
 579
 580 # Use framework_failure_, not the old name without the trailing underscore.
 581 sc_prohibit_framework_failure:
 582         @prohibit='\<framework_''failure\>'                             \
 583         halt='use framework_failure_ instead'                           \
 584           $(_sc_search_regexp)
 585
 586 # Prohibit the use of `...` in tests/.  Use $(...) instead.
 587 sc_prohibit_test_backticks:
 588         @prohibit='`' in_vc_files='^tests/'                             \
 589         halt='use $$(...), not `...` in tests/'                         \
 590           $(_sc_search_regexp)
 591
 592 # Ensure that compare is used to check empty files
 593 # so that the unexpected contents are displayed
 594 sc_prohibit_test_empty:
 595         @prohibit='test -s.*&&' in_vc_files='^tests/'                   \
 596         halt='use `compare /dev/null ...`, not `test -s ...` in tests/' \
 597           $(_sc_search_regexp)
 598
 599 # Ensure that expr doesn't work directly on various unsigned int types,
 600 # as that's not generally supported without GMP.
 601 sc_prohibit_expr_unsigned:
 602         @prohibit='expr .*(UINT|ULONG|[^S]SIZE|[UGP]ID|UINTMAX)'        \
 603         halt='avoid passing unsigned limits to `expr` (without GMP)'    \
 604         in_vc_files='^tests/'                                           \
 605           $(_sc_search_regexp)
 606
 607 # Programs like sort, ls, expr use PROG_FAILURE in place of EXIT_FAILURE.
 608 # Others, use the EXIT_CANCELED, EXIT_ENOENT, etc. macros defined in system.h.
 609 # In those programs, ensure that EXIT_FAILURE is not used by mistake.
 610 sc_some_programs_must_avoid_exit_failure:
 611         @grep -nw EXIT_FAILURE                                          \
 612             $$(git grep -El '[^T]_FAILURE|EXIT_CANCELED' $(srcdir)/src) \
 613           | grep -vE '= EXIT_FAILURE|return .* \?' | grep .             \
 614             && { echo '$(ME): do not use EXIT_FAILURE in the above'     \
 615                   1>&2; exit 1; } || :
 616
 617 # Ensure that tests call the get_min_ulimit_v_ function if using ulimit -v
 618 sc_prohibit_test_ulimit_without_require_:
 619         @(git grep -l get_min_ulimit_v_ $(srcdir)/tests;                \
 620           git grep -l 'ulimit -v' $(srcdir)/tests)                      \
 621           | sort | uniq -u | grep . && { echo "$(ME): the above test(s)"\
 622           " should match get_min_ulimit_v_ with ulimit -v" 1>&2; exit 1; } || :
 623
 624 # Ensure that tests call the cleanup_ function if using background processes
 625 sc_prohibit_test_background_without_cleanup_:
 626         @(git grep -El '( &$$|&[^&]*=\$$!)' $(srcdir)/tests;            \
 627           git grep -l 'cleanup_()' $(srcdir)/tests | sed p)             \
 628           | sort | uniq -u | grep . && { echo "$(ME): the above test(s)"\
 629           " should use cleanup_ for background processes" 1>&2; exit 1; } || :
 630
 631 # Ensure that tests call the print_ver_ function for programs which are
 632 # actually used in that test.
 633 sc_prohibit_test_calls_print_ver_with_irrelevant_argument:
 634         @git grep -w print_ver_ $(srcdir)/tests                         \
 635           | sed 's#:print_ver_##'                                       \
 636           | { fail=0;                                                   \
 637               while read file name; do                                  \
 638                 for i in $$name; do                                     \
 639                   case "$$i" in install) i=ginstall;; esac;             \
 640                   grep -w "$$i" $$file|grep -vw print_ver_|grep -q .    \
 641                     || { fail=1;                                        \
 642                          echo "*** Test: $$file, offending: $$i." 1>&2; };\
 643                 done;                                                   \
 644               done;                                                     \
 645               test $$fail = 0 || exit 1;                                \
 646             } || { echo "$(ME): the above test(s) call print_ver_ for"  \
 647                     "program(s) they don't use" 1>&2; exit 1; }
 648
 649 # Exempt the contents of any usage function from the following.
 650 _continued_string_col_1 = \
 651 s/^usage .*?\n}//ms;/\\\n\w/ and print ("$$ARGV\n"),$$e=1;END{$$e||=0;exit $$e}
 652 # Ding any source file that has a continued string with an alphabetic in the
 653 # first column of the following line.  We prohibit them because they usually
 654 # trigger false positives in tools that try to map an arbitrary line number
 655 # to the enclosing function name.  Of course, very many strings do precisely
 656 # this, *when they are part of the usage function*.  That is why we exempt
 657 # the contents of any function named "usage".
 658 sc_prohibit_continued_string_alpha_in_column_1:
 659         @perl -0777 -ne '$(_continued_string_col_1)' \
 660             $$($(VC_LIST_EXCEPT) | grep '\.[ch]$$') \
 661           || { echo '$(ME): continued string with word in first column' \
 662                 1>&2; exit 1; } || :
 663 # Use this to list offending lines:
 664 # git ls-files |grep '\.[ch]$' | xargs \
 665 #   perl -n -0777 -e 's/^usage.*?\n}//ms;/\\\n\w/ and print "$ARGV\n"' \
 666 #     | xargs grep -A1 '\\$'|grep '\.[ch][:-][_a-zA-Z]'
 667
 668
 669 ###########################################################
 670 _p0 = \([^"'/]\|"\([^\"]\|[\].\)*"\|'\([^\']\|[\].\)*'
 671 _pre = $(_p0)\|[/][^"'/*]\|[/]"\([^\"]\|[\].\)*"\|[/]'\([^\']\|[\].\)*'\)*
 672 _pre_anchored = ^\($(_pre)\)
 673 _comment_and_close = [^*]\|[*][^/*]\)*[*][*]*/
 674 # help font-lock mode: '
 675
 676 # A sed expression that removes ANSI C and ISO C99 comments.
 677 # Derived from the one in GNU gettext's 'moopp' preprocessor.
 678 _sed_remove_comments =                                  \
 679 /[/][/*]/{                                              \
 680   ta;                                                   \
 681   :a;                                                   \
 682   s,$(_pre_anchored)//.*,\1,;                           \
 683   te;                                                   \
 684   s,$(_pre_anchored)/[*]\($(_comment_and_close),\1 ,;   \
 685   ta;                                                   \
 686   /^$(_pre)[/][*]/{                                     \
 687     s,$(_pre_anchored)/[*].*,\1 ,;                      \
 688     tu;                                                 \
 689     :u;                                                 \
 690     n;                                                  \
 691     s,^\($(_comment_and_close),,;                       \
 692     tv;                                                 \
 693     s,^.*$$,,;                                          \
 694     bu;                                                 \
 695     :v;                                                 \
 696   };                                                    \
 697   :e;                                                   \
 698 }
 699 # Quote all single quotes.
 700 _sed_rm_comments_q = $(subst ','\'',$(_sed_remove_comments))
 701 # help font-lock mode: '
 702
 703 _space_before_paren_exempt =? \\n\\$$
 704 _space_before_paren_exempt = \
 705   (^ *\#|\\n\\$$|%s\(to %s|(date|group|character)\(s\))
 706 # Ensure that there is a space before each open parenthesis in C code.
 707 sc_space_before_open_paren:
 708         @if $(VC_LIST_EXCEPT) | grep -l '\.[ch]$$' > /dev/null; then    \
 709           fail=0;                                                       \
 710           for c in $$($(VC_LIST_EXCEPT) | grep '\.[ch]$$'); do          \
 711             sed '$(_sed_rm_comments_q)' $$c 2>/dev/null                 \
 712               | grep -i '[[:alnum:]]('                                  \
 713               | grep -vE '$(_space_before_paren_exempt)'                \
 714               | grep . && { fail=1; echo "*** $$c"; };                  \
 715           done;                                                         \
 716           test $$fail = 1 &&                                            \
 717             { echo '$(ME): the above files lack a space-before-open-paren' \
 718                 1>&2; exit 1; } || :;                                   \
 719         else :;                                                         \
 720         fi
 721
 722 # Similar to the gnulib maint.mk rule for sc_prohibit_strcmp
 723 # Use STREQ_LEN or STRPREFIX rather than comparing strncmp == 0, or != 0.
 724 sc_prohibit_strncmp:
 725         @prohibit='^[^#].*str''ncmp *\('                                \
 726         halt='use STREQ_LEN or STRPREFIX instead of str''ncmp'          \
 727           $(_sc_search_regexp)
 728
 729 # Enforce recommended preprocessor indentation style.
 730 sc_preprocessor_indentation:
 731         @if cppi --version >/dev/null 2>&1; then                        \
 732           $(VC_LIST_EXCEPT) | grep '\.[ch]$$' | xargs cppi -a -c        \
 733             || { echo '$(ME): incorrect preprocessor indentation' 1>&2; \
 734                 exit 1; };                                              \
 735         else                                                            \
 736           echo '$(ME): skipping test $@: cppi not installed' 1>&2;      \
 737         fi
 738
 739 # THANKS.in is a list of name/email pairs for people who are mentioned in
 740 # commit logs (and generated ChangeLog), but who are not also listed as an
 741 # author of a commit.  Name/email pairs of commit authors are automatically
 742 # extracted from the repository.  As a very minor factorization, when
 743 # someone who was initially listed only in THANKS.in later authors a commit,
 744 # this rule detects that their pair may now be removed from THANKS.in.
 745 sc_THANKS_in_duplicates:
 746         @{ git log --pretty=format:%aN | sort -u;                       \
 747             cut -b-36 $(srcdir)/THANKS.in                               \
 748               | sed '/^$$/,/^$$/!d;/^$$/d;s/  *$$//'; }                 \
 749           | sort | uniq -d | grep .                                     \
 750             && { echo '$(ME): remove the above names from THANKS.in'    \
 751                   1>&2; exit 1; } || :
 752
 753 # Ensure the contributor list stays sorted.  However, if the system's
 754 # en_US.UTF-8 locale data is erroneous, give a diagnostic and skip
 755 # this test.  This affects OS X, up to at least 10.11.6.
 756 # Use our sort as other implementations may result in a different order.
 757 sc_THANKS_in_sorted:
 758         @printf 'a\n.b\n'|LC_ALL=en_US.UTF-8 src/sort -c 2> /dev/null   \
 759           && {                                                          \
 760             sed '/^$$/,/^$$/!d;/^$$/d' $(srcdir)/THANKS.in > $@.1 &&    \
 761             LC_ALL=en_US.UTF-8 src/sort -f -k1,1 $@.1 > $@.2 &&         \
 762             diff -u $@.1 $@.2; diff=$$?;                                \
 763             rm -f $@.1 $@.2;                                            \
 764             test "$$diff" = 0                                           \
 765               || { echo '$(ME): THANKS.in is unsorted' 1>&2; exit 1; }; \
 766             }                                                           \
 767           || { echo '$(ME): this system has erroneous locale data;'     \
 768                     'skipping $@' 1>&2; }
 769
 770 # Look for developer diagnostics that are marked for translation.
 771 # This won't find any for which devmsg's format string is on a separate line.
 772 sc_marked_devdiagnostics:
 773         @prohibit='\<devmsg *\(.*_\('                                   \
 774         halt='found marked developer diagnostic(s)'                     \
 775           $(_sc_search_regexp)
 776
 777 # Ensure we keep hex constants as 4 or 8 bytes for consistency
 778 # and so that make src/fs-magic-compare works consistently
 779 sc_fs-magic-compare:
 780         @sed -n 's|.*/\* \(0x[0-9A-Fa-f]\{1,\}\) .*\*/|\1|p'            \
 781           $(srcdir)/src/stat.c | grep -Ev '^0x([0-9A-F]{4}){1,2}$$'     \
 782             && { echo '$(ME): Constants in src/stat.c should be 4 or 8' \
 783                       'upper-case chars' 1>&2; exit 1; } || :
 784
 785 # Ensure gnulib generated files are ignored
 786 # TODO: Perhaps augment gnulib-tool to do this in lib/.gitignore?
 787 sc_gitignore_missing:
 788         @{ sed -n '/^\/lib\/.*\.h$$/{p;p}' $(srcdir)/.gitignore;        \
 789             find lib -name '*.in*' ! -name '*~' ! -name 'sys_*' |       \
 790               sed 's|^|/|; s|_\(.*in\.h\)|/\1|; s/\.in//'; } |          \
 791               sort | uniq -u | grep . && { echo '$(ME): Add above'      \
 792                 'entries to .gitignore' >&2; exit 1; } || :
 793
 794 # Flag redundant entries in .gitignore
 795 # Disabled for now as too aggressive flagging
 796 # entries like /lib/arg-nonnull.h
 797 #sc_gitignore_redundant:
 798 #       @{ grep ^/lib $(srcdir)/.gitignore;                             \
 799 #          sed 's|^|/lib|' $(srcdir)/lib/.gitignore; } |                \
 800 #           sort | uniq -d | grep . && { echo '$(ME): Remove above'     \
 801 #             'entries from .gitignore' >&2; exit 1; } || :
 802
 803 sc_prohibit-form-feed:
 804         @prohibit=$$'\f' \
 805         in_vc_files='\.[chly]$$' \
 806         halt='Form Feed (^L) detected' \
 807           $(_sc_search_regexp)
 808
 809 # Override the default Cc: used in generating an announcement.
 810 announcement_Cc_ = $(translation_project_), \
 811   coreutils@gnu.org, coreutils-announce@gnu.org
 812
 813 -include $(srcdir)/dist-check.mk
 814
 815 update-copyright-env = \
 816   UPDATE_COPYRIGHT_FORCE=1 \
 817   UPDATE_COPYRIGHT_USE_INTERVALS=2 \
 818   UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
 819
 820 # List syntax-check exemptions.
 821 exclude_file_name_regexp--sc_space_tab = \
 822   ^(tests/pr/|tests/misc/nl\.sh$$|gl/.*\.diff$$|man/help2man$$)
 823 exclude_file_name_regexp--sc_bindtextdomain = \
 824   ^(gl/.*|lib/euidaccess-stat|src/make-prime-list)\.c$$
 825 exclude_file_name_regexp--sc_trailing_blank = \
 826   ^(tests/pr/|gl/.*\.diff$$|man/help2man)
 827 exclude_file_name_regexp--sc_system_h_headers = \
 828   ^src/((die|system|copy)\.h|make-prime-list\.c)$$
 829
 830 _src = (false|lbracket|ls-(dir|ls|vdir)|tac-pipe|uname-(arch|uname))
 831 _gl_src = (xdecto.max|cl-strtold)
 832 exclude_file_name_regexp--sc_require_config_h_first = \
 833   (^lib/buffer-lcm\.c|gl/lib/$(_gl_src)\.c|src/$(_src)\.c)$$
 834 exclude_file_name_regexp--sc_require_config_h = \
 835   $(exclude_file_name_regexp--sc_require_config_h_first)
 836
 837 exclude_file_name_regexp--sc_po_check = ^(gl/|man/help2man)
 838 exclude_file_name_regexp--sc_prohibit_always-defined_macros = \
 839   ^src/(seq|remove)\.c$$
 840 exclude_file_name_regexp--sc_prohibit_empty_lines_at_EOF = ^tests/pr/
 841 exclude_file_name_regexp--sc_program_name = \
 842   ^(gl/.*|lib/euidaccess-stat|src/make-prime-list)\.c$$
 843 exclude_file_name_regexp--sc_file_system = \
 844   NEWS|^(init\.cfg|src/df\.c|tests/df/df-P\.sh|tests/df/df-output\.sh)$$
 845 exclude_file_name_regexp--sc_prohibit_always_true_header_tests = \
 846   ^m4/stat-prog\.m4$$
 847 exclude_file_name_regexp--sc_prohibit_fail_0 = \
 848   (^.*/git-hooks/commit-msg|^tests/init\.sh|Makefile\.am|\.mk|.*\.texi)$$
 849 exclude_file_name_regexp--sc_prohibit_test_minus_ao = *\.texi$$
 850 exclude_file_name_regexp--sc_prohibit_atoi_atof = ^lib/euidaccess-stat\.c$$
 851
 852 # longlong.h is maintained elsewhere.
 853 _ll = ^src/longlong\.h$$
 854 exclude_file_name_regexp--sc_useless_cpp_parens = $(_ll)
 855 exclude_file_name_regexp--sc_space_before_open_paren = $(_ll)
 856
 857 tbi_1 = ^tests/pr/|(\.mk|^man/help2man)$$
 858 tbi_2 = ^scripts/git-hooks/(pre-commit|pre-applypatch|applypatch-msg)$$
 859 tbi_3 = (GNU)?[Mm]akefile(\.am)?$$|$(_ll)
 860 exclude_file_name_regexp--sc_prohibit_tab_based_indentation = \
 861   $(tbi_1)|$(tbi_2)|$(tbi_3)
 862
 863 exclude_file_name_regexp--sc_preprocessor_indentation = \
 864   ^(gl/lib/rand-isaac\.[ch]|gl/tests/test-rand-isaac\.c)$$|$(_ll)
 865 exclude_file_name_regexp--sc_prohibit_stat_st_blocks = \
 866   ^(src/system\.h|tests/du/2g\.sh)$$
 867
 868 exclude_file_name_regexp--sc_prohibit_continued_string_alpha_in_column_1 = \
 869   ^src/(system\.h|od\.c|printf\.c|getlimits\.c)$$
 870
 871 exclude_file_name_regexp--sc_prohibit_test_backticks = \
 872   ^tests/(local\.mk|(init|misc/stdbuf|factor/create-test)\.sh)$$
 873
 874 # Exempt test.c, since it's nominally shared, and relatively static.
 875 exclude_file_name_regexp--sc_prohibit_operator_at_end_of_line = \
 876   ^src/(ptx|test|head)\.c$$
 877
 878 exclude_file_name_regexp--sc_error_message_uppercase = ^src/factor\.c$$
 879 exclude_file_name_regexp--sc_prohibit_atoi_atof = ^src/make-prime-list\.c$$
 880
 881 # Exception here as we don't want __attribute elided on non GCC
 882 exclude_file_name_regexp--sc_prohibit-gl-attributes = ^src/libstdbuf\.c$$
 883
 884 exclude_file_name_regexp--sc_prohibit_uppercase_id_est = \.diff$$
 885 exclude_file_name_regexp--sc_ensure_dblspace_after_dot_before_id_est = \.diff$$
 886 exclude_file_name_regexp--sc_ensure_comma_after_id_est = \.diff|$(_ll)$$
 887 exclude_file_name_regexp--sc_long_lines = \.diff$$|$(_ll)
 888
 889 # Augment AM_CFLAGS to include our per-directory options:
 890 AM_CFLAGS += $($(@D)_CFLAGS)
 891
 892 src_CFLAGS = $(WARN_CFLAGS)
 893 lib_CFLAGS = $(GNULIB_WARN_CFLAGS)
 894 gnulib-tests_CFLAGS = $(GNULIB_TEST_WARN_CFLAGS)
 895
 896 # Configuration to make the tight-scope syntax-check rule work with
 897 # non-recursive make.
 898 # Note _gl_TS_headers use _single line_ extern function declarations,
 899 # while *_SOURCES use the _two line_ form.
 900 export _gl_TS_headers = $(noinst_HEADERS)
 901 # Add exceptions for --enable-single-binary renamed functions.
 902 _gl_TS_unmarked_extern_functions = main usage
 903 _gl_TS_unmarked_extern_functions += single_binary_main_.* _usage_.*
 904 # Headers to search for single line extern _data_ declarations.
 905 _gl_TS_other_headers = $(srcdir)/src/*.h src/*.h
 906 # Tell the tight_scope rule about an exceptional "extern" variable.
 907 # Normally, the rule would detect its declaration, but that uses a
 908 # different name, __clz_tab.
 909 _gl_TS_unmarked_extern_vars = factor_clz_tab
 910 # Other tight_scope settings
 911 _gl_TS_dir = .
 912 _gl_TS_obj_files = src/*.$(OBJEXT)