cfg.mk

   1 # Customize maint.mk                           -*- makefile -*-
   2 # Copyright (C) 2003-2016 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 = 5c64c69e6303deaceecacc4b498a61fd
  49
  50 # Add an exemption for sc_makefile_at_at_check.
  51 _makefile_at_at_check_exceptions = ' && !/^cu_install_prog/ && !/dynamic-dep/'
  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 $$1' \
  63           $(dd); } | sort > $@.2
  64         @diff -u $@.1 $@.2; diff=$$?;                                   \
  65         rm -f $@.1 $@.2;                                                \
  66         test "$$diff" = 0                                               \
  67           || { echo '$(ME): $(dd) has inconsistent O_ flag lists'>&2;   \
  68                exit 1; }
  69
  70 # Ensure that dd's definition of LONGEST_SYMBOL stays in sync
  71 # with the strings from the two affected variables.
  72 dd_c = $(srcdir)/src/dd.c
  73 sc_dd_max_sym_length:
  74 ifneq ($(wildcard $(dd_c)),)
  75         @len=$$( (sed -n '/conversions\[\] =$$/,/^};/p' $(dd_c);\
  76                  sed -n '/flags\[\] =$$/,/^};/p' $(dd_c) )      \
  77                 |sed -n '/"/s/^[^"]*"\([^"]*\)".*/\1/p'| wc -L);\
  78         max=$$(sed -n '/^#define LONGEST_SYMBOL /s///p' $(dd_c) \
  79               |tr -d '"' | wc -L);              \
  80         if test "$$len" = "$$max"; then :; else                 \
  81           echo 'dd.c: LONGEST_SYMBOL is not longest' 1>&2;      \
  82           exit 1;                                               \
  83         fi
  84 endif
  85
  86 # Many m4 macros names once began with 'jm_'.
  87 # On 2004-04-13, they were all changed to start with gl_ instead.
  88 # Make sure that none are inadvertently reintroduced.
  89 sc_prohibit_jm_in_m4:
  90         @grep -nE 'jm_[A-Z]'                                            \
  91                 $$($(VC_LIST) m4 |grep '\.m4$$'; echo /dev/null) &&     \
  92             { echo '$(ME): do not use jm_ in m4 macro names'            \
  93               1>&2; exit 1; } || :
  94
  95 # Ensure that each root-requiring test is run via the "check-root" rule.
  96 sc_root_tests:
  97         @t1=sc-root.expected; t2=sc-root.actual;                        \
  98         grep -nl '^ *require_root_$$' `$(VC_LIST) tests` |              \
  99           sed 's|.*/tests/|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 -Ev '^tests/(factor/(run|create-test)|init)\.sh$$'   \
 115             | $(EGREP) "$$test_extensions_rx\$$";                       \
 116         } | sort | uniq -u | grep . && exit 1; :
 117
 118 # Ensure that all version-controlled test scripts are executable.
 119 sc_tests_executable:
 120         @set -o noglob 2>/dev/null || set -f;                              \
 121         find_ext="-name '' "`printf -- "-o -name *%s " $(TEST_EXTENSIONS)`;\
 122         find $(srcdir)/tests/ \( $$find_ext \) \! -perm -u+x -print        \
 123           | { sed "s|^$(srcdir)/||"; git ls-files $(srcdir)/tests/; }      \
 124           | sort | uniq -d                                                 \
 125           | sed -e "s/^/$(ME): Please make test executable: /" | grep .    \
 126             && exit 1; :
 127
 128 # Ensure all gnulib patches apply cleanly
 129 sc_ensure_gl_diffs_apply_cleanly:
 130         @find $(srcdir)/gl/ -name '*.diff' | while read p; do           \
 131           patch --fuzz=0 -f -s -d $(srcdir)/gnulib/ -p1 --dry-run < "$$p" >&2 \
 132             || { echo "$$p" >&2; echo 'To refresh all gl patches run:'  \
 133                  'make refresh-gnulib-patches' >&2; exit 1; }           \
 134         done
 135
 136 # Avoid :>file which doesn't propagate errors
 137 sc_prohibit_colon_redirection:
 138         @cd $(srcdir)/tests && GIT_PAGER= git grep -n ': *>.*||' \
 139           && { echo '$(ME): '"The leading colon in :> will hide errors" 1>&2; \
 140                exit 1; }  \
 141           || :
 142
 143 # Ensure emit_mandatory_arg_note() is called if required
 144 sc_ensure_emit_mandatory_arg_note:
 145         @cd $(srcdir)/src && GIT_PAGER= git \
 146           grep -l -- '^ *-[^-].*--.*[^[]=' *.c \
 147           | xargs grep -L emit_mandatory_arg_note | grep . \
 148           && { echo '$(ME): '"emit_mandatory_arg_note() missing" 1>&2; \
 149                exit 1; } || :
 150
 151 # Create a list of regular expressions matching the names
 152 # of files included from system.h.  Exclude a couple.
 153 .re-list:
 154         @sed -n '/^# *include /s///p' $(srcdir)/src/system.h \
 155           | grep -Ev 'sys/(param|file)\.h' \
 156           | sed 's/ .*//;;s/^["<]/^# *include [<"]/;s/\.h[">]$$/\\.h[">]/' \
 157           > $@-t
 158         @mv $@-t $@
 159
 160 define gl_trap_
 161   Exit () { set +e; (exit $$1); exit $$1; };                            \
 162   for sig in 1 2 3 13 15; do                                            \
 163     eval "trap 'Exit $$(expr $$sig + 128)' $$sig";                      \
 164   done
 165 endef
 166
 167 # Files in src/ should not include directly any of
 168 # the headers already included via system.h.
 169 sc_system_h_headers: .re-list
 170         @if test -f $(srcdir)/src/system.h; then                        \
 171           trap 'rc=$$?; rm -f .re-list; exit $$rc' 0;                   \
 172           $(gl_trap_);                                                  \
 173           grep -nE -f .re-list                                          \
 174               $$($(VC_LIST_EXCEPT) | grep '^\($(srcdir)/\)\?src/')      \
 175             && { echo '$(ME): the above are already included via system.h'\
 176                   1>&2;  exit 1; } || :;                                \
 177         fi
 178
 179 # Files in src/ should not use '%s' notation in format strings,
 180 # i.e., single quotes around %s (or similar) should be avoided.
 181 sc_prohibit_quotes_notation:
 182         @cd $(srcdir)/src && GIT_PAGER= git grep -n "\".*[\`']%s'.*\"" *.c \
 183           && { echo '$(ME): '"Use quote() to avoid quoted '%s' notation" 1>&2; \
 184                exit 1; }  \
 185           || :
 186
 187 # Files in src/ should quote all strings in error() output, so that
 188 # unexpected input chars like \r etc. don't corrupt the error.
 189 # In edge cases this can be avoided by putting the format string
 190 # on a separate line to the following arguments.
 191 sc_error_quotes:
 192         @cd $(srcdir)/src && GIT_PAGER= git grep -n 'error *(.*%s.*, [^(]*);$$'\
 193           *.c | grep -v ', q' \
 194           && { echo '$(ME): '"Use quote() for error string arguments" 1>&2; \
 195                exit 1; }  \
 196           || :
 197
 198 # Files in src/ should quote all file names in error() output
 199 # using quotef(), to provide quoting only when necessary,
 200 # but also provide better support for copy and paste when used.
 201 sc_error_shell_quotes:
 202         @cd $(srcdir)/src && \
 203           { GIT_PAGER= git grep -E \
 204             'error \(.*%s[:"], .*(name|file)[^"]*\);$$' *.c; \
 205             GIT_PAGER= git grep -E \
 206             ' quote[ _].*file' *.c; } \
 207           | grep -Ev '(quotef|q[^ ]*name)' \
 208           && { echo '$(ME): '"Use quotef() for colon delimited names" 1>&2; \
 209                exit 1; }  \
 210           || :
 211
 212 # Files in src/ should quote all file names in error() output
 213 # using quoteaf() when the name is separated with spaces,
 214 # to distinguish the file name at issue and
 215 # to provide better support for copy and paste.
 216 sc_error_shell_always_quotes:
 217         @cd $(srcdir)/src && GIT_PAGER= git grep -E \
 218             'error \(.*[^:] %s[ "].*, .*(name|file)[^"]*\);$$' \
 219             *.c | grep -Ev '(quoteaf|q[^ ]*name)' \
 220           && { echo '$(ME): '"Use quoteaf() for space delimited names" 1>&2; \
 221                exit 1; }  \
 222           || :
 223         @cd $(srcdir)/src && GIT_PAGER= git grep -E -A1 \
 224             'error \([^%]*[^:] %s[ "]' *.c | grep 'quotef' \
 225           && { echo '$(ME): '"Use quoteaf() for space delimited names" 1>&2; \
 226                exit 1; }  \
 227           || :
 228
 229 # Avoid unstyled quoting to internal slots and thus destined for diagnostics
 230 # as that can leak unescaped control characters to the output, when using
 231 # the default "literal" quoting style.
 232 # Instead use quotef(), or quoteaf() or in edge cases quotearg_n_style_colon().
 233 # A more general PCRE would be @prohibit='quotearg_.*(?!(style|buffer))'
 234 sc_prohibit-quotearg:
 235         @prohibit='quotearg(_n)?(|_colon|_char|_mem) ' \
 236         in_vc_files='\.c$$' \
 237         halt='Unstyled diagnostic quoting detected' \
 238           $(_sc_search_regexp)
 239
 240 sc_sun_os_names:
 241         @grep -nEi \
 242             'solaris[^[:alnum:]]*2\.(7|8|9|[1-9][0-9])|sunos[^[:alnum:]][6-9]' \
 243             $$($(VC_LIST_EXCEPT)) &&                                    \
 244           { echo '$(ME): found misuse of Sun OS version numbers' 1>&2;  \
 245             exit 1; } || :
 246
 247 # Ensure that the list of programs and author names is accurate.
 248 # We need a UTF8 locale.  If a lack of locale support or a missing
 249 # translation inhibits printing of UTF-8 names, just skip this test.
 250 au_dotdot = authors-dotdot
 251 au_actual = authors-actual
 252 sc_check-AUTHORS: $(all_programs)
 253         @locale=en_US.UTF-8;                            \
 254         LC_ALL=$$locale ./src/cat --version             \
 255             | grep ' Torbjorn ' > /dev/null             \
 256           && { echo "$@: skipping this check"; exit 0; }; \
 257         rm -f $(au_actual) $(au_dotdot);                \
 258         for i in `ls $(all_programs)                    \
 259             | sed -e 's,^src/,,' -e 's,$(EXEEXT)$$,,'   \
 260             | sed /libstdbuf/d                          \
 261             | $(ASSORT) -u`; do                         \
 262           test "$$i" = '[' && continue;                 \
 263           exe=$$i;                                      \
 264           if test "$$i" = install; then                 \
 265             exe=ginstall;                               \
 266           elif test "$$i" = test; then                  \
 267             exe='[';                                    \
 268           fi;                                           \
 269           LC_ALL=$$locale ./src/$$exe --version         \
 270             | perl -0 -p -e 's/,\n/, /gm'               \
 271             | sed -n -e '/Written by /{ s//'"$$i"': /;' \
 272                   -e 's/,* and /, /; s/\.$$//; p; }';   \
 273         done > $(au_actual) &&                          \
 274         sed -n '/^[^ ][^ ]*:/p' $(srcdir)/AUTHORS > $(au_dotdot) \
 275           && diff $(au_actual) $(au_dotdot) \
 276           && rm -f $(au_actual) $(au_dotdot)
 277
 278 # Each program with a non-ASCII author name must link with LIBICONV.
 279 sc_check-I18N-AUTHORS:
 280         @cd $(srcdir)/src &&                                            \
 281           for i in $$(git grep -l -w proper_name_utf8 *.c|sed 's/\.c//'); do \
 282             grep -E "^src_$${i}_LDADD"' .?= .*\$$\(LIBICONV\)' local.mk \
 283                 > /dev/null                                             \
 284               || { echo "$(ME): link rules for $$i do not include"      \
 285                     '$$(LIBICONV)' 1>&2; exit 1; };                     \
 286           done
 287
 288 # Disallow the C99 printf size specifiers %z and %j as they're not portable.
 289 # The gnulib printf replacement does support them, however the printf
 290 # replacement is not currently explicitly depended on by the gnulib error()
 291 # module for example.  Also we use fprintf() in a few places to output simple
 292 # formats but don't use the gnulib module as it is seen as overkill at present.
 293 # We'd have to adjust the above gnulib items before disabling this.
 294 sc_prohibit-c99-printf-format:
 295         @cd $(srcdir)/src && GIT_PAGER= git grep -n '%[0*]*[jz][udx]' *.c    \
 296           && { echo '$(ME): Use PRI*MAX instead of %j or %z' 1>&2; exit 1; } \
 297           || :
 298
 299 # Ensure the alternative __attribute (keyword) form isn't used as
 300 # that form is not elided where required.  Also ensure that we don't
 301 # directly use attributes already defined by gnulib.
 302 # TODO: move the check for _GL... attributes to gnulib.
 303 sc_prohibit-gl-attributes:
 304         @prohibit='__attribute |__(unused|pure|const)__'        \
 305         in_vc_files='\.[ch]$$'                                  \
 306         halt='Use _GL... attribute macros'                      \
 307           $(_sc_search_regexp)
 308
 309 # Look for lines longer than 80 characters, except omit:
 310 # - program-generated long lines in diff headers,
 311 # - the help2man script copied from upstream,
 312 # - tests involving long checksum lines, and
 313 # - the 'pr' test cases.
 314 FILTER_LONG_LINES =                                             \
 315   \|^[^:]*man/help2man:| d;                                     \
 316   \|^[^:]*tests/misc/sha[0-9]*sum.*\.pl[-:]| d;                 \
 317   \|^[^:]*tests/pr/|{ \|^[^:]*tests/pr/pr-tests:| !d; };
 318 sc_long_lines:
 319         @wc -L /dev/null >/dev/null 2>/dev/null                         \
 320            || { echo "$@: skipping: wc -L not supported"; exit 0; };    \
 321         sed -r 1q /dev/null 2>/dev/null                                 \
 322            || { echo "$@: skipping: sed -r not supported"; exit 0; };   \
 323         files=$$($(VC_LIST_EXCEPT) | xargs wc -L | sed -rn '/ total$$/d;\
 324                   s/^ *(8[1-9]|9[0-9]|[0-9]{3,}) //p');                 \
 325         halt='line(s) with more than 80 characters; reindent';          \
 326         for file in $$files; do                                         \
 327           expand $$file | grep -nE '^.{80}.' |                          \
 328           sed -e "s|^|$$file:|" -e '$(FILTER_LONG_LINES)';              \
 329         done | grep . && { msg="$$halt" $(_sc_say_and_exit) } || :
 330
 331 # Option descriptions should not start with a capital letter.
 332 # One could grep source directly as follows:
 333 # grep -E " {2,6}-.*[^.]  [A-Z][a-z]" $$($(VC_LIST_EXCEPT) | grep '\.c$$')
 334 # but that would miss descriptions not on the same line as the -option.
 335 sc_option_desc_uppercase: $(ALL_MANS)
 336         @grep '^\\fB\\-' -A1 man/*.1 | LC_ALL=C grep '\.1.[A-Z][a-z]'   \
 337           && { echo 1>&2 '$@: found initial capitals in --help'; exit 1; } || :
 338
 339 # Ensure all man/*.[1x] files are present.
 340 sc_man_file_correlation: check-x-vs-1 check-programs-vs-x
 341
 342 # Ensure that for each .x file in the 'man/' subdirectory, there is a
 343 # corresponding .1 file in the definition of $(EXTRA_MANS).
 344 # But since that expansion usually lacks programs like arch and hostname,
 345 # add them here manually.
 346 .PHONY: check-x-vs-1
 347 check-x-vs-1:
 348         @PATH=./src$(PATH_SEPARATOR)$$PATH; export PATH;                \
 349         t=$@-t;                                                         \
 350         (cd $(srcdir)/man && ls -1 *.x)                                 \
 351           | sed 's/\.x$$//' | $(ASSORT) > $$t;                          \
 352         (echo $(patsubst man/%,%,$(ALL_MANS))                           \
 353           | tr -s ' ' '\n' | sed 's/\.1$$//')                           \
 354           | $(ASSORT) -u | diff - $$t || { rm $$t; exit 1; };           \
 355         rm $$t
 356
 357 # Ensure that non-trivial .x files in the 'man/' subdirectory,
 358 # i.e., files exceeding a line count of 20 or a byte count of 1000,
 359 # contain a Copyright notice.
 360 .PHONY: sc_man_check_x_copyright
 361 sc_man_check_x_copyright:
 362         @status=0;                                                      \
 363         cd $(srcdir) && wc -cl man/*.x | head -n-1                      \
 364           | awk '$$1 >= 20 || $$2 >= 1000 {print $$3}'                  \
 365           | xargs grep -L 'Copyright .* Free Software Foundation'       \
 366           | grep .                                                      \
 367           && { echo  1>&2 '$@: exceeding file size/line count limit'    \
 368                   '- please add a copyright note'; status=1; };         \
 369         exit $$status
 370
 371 # Writing a portable rule to generate a manpage like '[.1' would be
 372 # a nightmare, so filter that out.
 373 all-progs-but-lbracket = $(filter-out [,$(patsubst src/%,%,$(all_programs)))
 374
 375 # Ensure that for each coreutils program there is a corresponding
 376 # '.x' file in the 'man/' subdirectory.
 377 .PHONY: check-programs-vs-x
 378 check-programs-vs-x:
 379         @status=0;                                      \
 380         for p in dummy $(all-progs-but-lbracket); do    \
 381           case $$p in *.so) continue;; esac;            \
 382           test $$p = dummy && continue;                 \
 383           test $$p = ginstall && p=install || : ;       \
 384           test -f $(srcdir)/man/$$p.x                   \
 385             || { echo missing $$p.x 1>&2; status=1; };  \
 386         done;                                           \
 387         exit $$status
 388
 389 # Ensure we can check out on case insensitive file systems
 390 sc_case_insensitive_file_names: src/uniq
 391         @git ls-files | sort -f | src/uniq -Di | grep . && \
 392           { echo "$(ME): the above file(s) conflict on case insensitive" \
 393           " file systems" 1>&2; exit 1; } || :
 394
 395 # Ensure that the end of each release's section is marked by two empty lines.
 396 sc_NEWS_two_empty_lines:
 397         @sed -n 4,/Noteworthy/p $(srcdir)/NEWS                          \
 398             | perl -n0e '/(^|\n)\n\n\* Noteworthy/ or exit 1'           \
 399           || { echo '$(ME): use two empty lines to separate NEWS sections' \
 400                  1>&2; exit 1; } || :
 401
 402 # With split lines, don't leave an operator at end of line.
 403 # Instead, put it on the following line, where it is more apparent.
 404 # Don't bother checking for "*" at end of line, since it provokes
 405 # far too many false positives, matching constructs like "TYPE *".
 406 # Similarly, omit "=" (initializers).
 407 binop_re_ ?= [-/+^!<>]|[-/+*^!<>=]=|&&?|\|\|?|<<=?|>>=?
 408 sc_prohibit_operator_at_end_of_line:
 409         @prohibit='. ($(binop_re_))$$'                                  \
 410         in_vc_files='\.[chly]$$'                                        \
 411         halt='found operator at end of line'                            \
 412           $(_sc_search_regexp)
 413
 414 # Don't use "readlink" or "readlinkat" directly
 415 sc_prohibit_readlink:
 416         @prohibit='\<readlink(at)? \('                                  \
 417         halt='do not use readlink(at); use via xreadlink or areadlink*' \
 418           $(_sc_search_regexp)
 419
 420 # Don't use address of "stat" or "lstat" functions
 421 sc_prohibit_stat_macro_address:
 422         @prohibit='\<l?stat '':|&l?stat\>'                              \
 423         halt='stat() and lstat() may be function-like macros'           \
 424           $(_sc_search_regexp)
 425
 426 # Ensure that date's --help output stays in sync with the info
 427 # documentation for GNU strftime.  The only exception is %N,
 428 # which date accepts but GNU strftime does not.
 429 extract_char = sed 's/^[^%][^%]*%\(.\).*/\1/'
 430 sc_strftime_check:
 431         @if test -f $(srcdir)/src/date.c; then                          \
 432           grep '^  %.  ' $(srcdir)/src/date.c | sort                    \
 433             | $(extract_char) > $@-src;                                 \
 434           { echo N;                                                     \
 435             info libc date calendar format 2>/dev/null                  \
 436               | grep "^ *['\`]%.'$$"| $(extract_char); }| sort >$@-info;\
 437           if test $$(stat --format %s $@-info) != 2; then               \
 438             diff -u $@-src $@-info || exit 1;                           \
 439           else                                                          \
 440             echo '$(ME): skipping $@: libc info not installed' 1>&2;    \
 441           fi;                                                           \
 442           rm -f $@-src $@-info;                                         \
 443         fi
 444
 445 # Indent only with spaces.
 446 sc_prohibit_tab_based_indentation:
 447         @prohibit='^ *  '                                               \
 448         halt='TAB in indentation; use only spaces'                      \
 449           $(_sc_search_regexp)
 450
 451 # Enforce lowercase 'e' in "I.e.".
 452 sc_prohibit_uppercase_id_est:
 453         @prohibit='I\.E\.'                                              \
 454         halt='Uppercase "Id Est" abbreviation; use "I.e.," instead'     \
 455           $(_sc_search_regexp)
 456
 457 # Enforce double-space before "I.e." at the beginning of a sentence.
 458 sc_ensure_dblspace_after_dot_before_id_est:
 459         @prohibit='\. I\.e\.'                                           \
 460         halt='Single space after dot before "i.e."; use ".  i.e." instead' \
 461           $(_sc_search_regexp)
 462
 463 # Enforce comma after "i.e." (at least before a blank or at EOL).
 464 sc_ensure_comma_after_id_est:
 465         @prohibit='[Ii]\.e\.( |$$)'                                     \
 466         halt='Missing comma after "i.e."; use "i.e.," instead'          \
 467           $(_sc_search_regexp)
 468
 469 # The SEE ALSO section of a man page should not be terminated with
 470 # a period.  Check the first line after each "SEE ALSO" line in man/*.x:
 471 sc_prohibit_man_see_also_period:
 472         @grep -nB1 '\.$$' $$($(VC_LIST_EXCEPT) | grep 'man/.*\.x$$')    \
 473             | grep -A1 -e '-\[SEE ALSO\]' | grep '\.$$' &&              \
 474           { echo '$(ME): do not end "SEE ALSO" section with a period'   \
 475               1>&2; exit 1; } || :
 476
 477 # Don't use "indent-tabs-mode: nil" anymore.  No longer needed.
 478 sc_prohibit_emacs__indent_tabs_mode__setting:
 479         @prohibit='^( *[*#] *)?indent-tabs-mode:'                       \
 480         halt='use of emacs indent-tabs-mode: setting'                   \
 481           $(_sc_search_regexp)
 482
 483 # Ensure that tests don't include a redundant fail=0.
 484 sc_prohibit_fail_0:
 485         @prohibit='\<fail=0\>'                                          \
 486         halt='fail=0 initialization'                                    \
 487           $(_sc_search_regexp)
 488
 489 # Ensure that tests don't use `cmd ... && fail=1` as that hides crashes.
 490 # The "exclude" expression allows common idioms like `test ... && fail=1`
 491 # and the 2>... portion allows commands that redirect stderr and so probably
 492 # independently check its contents and thus detect any crash messages.
 493 sc_prohibit_and_fail_1:
 494         @prohibit='&& fail=1'                                           \
 495         exclude='(stat|kill|test |EGREP|grep|compare|2> *[^/])'         \
 496         halt='&& fail=1 detected. Please use: returns_ 1 ... || fail=1' \
 497         in_vc_files='^tests/'                                           \
 498           $(_sc_search_regexp)
 499
 500 # The mode part of a setfacl -m option argument must be three bytes long.
 501 # I.e., an argument of user:bin:rw or user:bin:r will make Solaris 10's
 502 # setfacl reject it with: "Unrecognized character found in mode field".
 503 # Use hyphens to give it a length of 3: "...:rw-" or "...:r--".
 504 sc_prohibit_short_facl_mode_spec:
 505         @prohibit='\<setfacl .*-m.*:.*:[rwx-]{1,2} '                    \
 506         halt='setfacl mode string length < 3; extend with hyphen(s)'    \
 507           $(_sc_search_regexp)
 508
 509 # Ensure that "stdio--.h" is used where appropriate.
 510 sc_require_stdio_safer:
 511         @if $(VC_LIST_EXCEPT) | grep -l '\.[ch]$$' > /dev/null; then    \
 512           files=$$(grep -l '\bfreopen \?(' $$($(VC_LIST_EXCEPT)         \
 513               | grep '\.[ch]$$'));                                      \
 514           test -n "$$files" && grep -LE 'include "stdio--.h"' $$files   \
 515               | grep . &&                                               \
 516           { echo '$(ME): the above files should use "stdio--.h"'        \
 517                 1>&2; exit 1; } || :;                                   \
 518         else :;                                                         \
 519         fi
 520
 521 sc_prohibit_perl_hash_quotes:
 522         @prohibit="\{'[A-Z_]+' *[=}]"                                   \
 523         halt="in Perl code, write \$$hash{KEY}, not \$$hash{'K''EY'}"   \
 524           $(_sc_search_regexp)
 525
 526 # Prefer xnanosleep over other less-precise sleep methods
 527 sc_prohibit_sleep:
 528         @prohibit='\<(nano|u)?sleep \('                                 \
 529         halt='prefer xnanosleep over other sleep interfaces'            \
 530           $(_sc_search_regexp)
 531
 532 # Use print_ver_ (from init.cfg), not open-coded $VERBOSE check.
 533 sc_prohibit_verbose_version:
 534         @prohibit='test "\$$VERBOSE" = yes && .* --version'             \
 535         halt='use the print_ver_ function instead...'                   \
 536           $(_sc_search_regexp)
 537
 538 # Enforce print_ver_ tracking of dependencies
 539 # Each coreutils specific program a test requires
 540 # should be tagged by calling through env(1).
 541 sc_env_test_dependencies:
 542         @cd $(top_srcdir) && GIT_PAGER= git grep -E \
 543             "env ($$(build-aux/gen-lists-of-programs.sh --list-progs | \
 544                 grep -vF '[' |paste -d'|' -s))" tests | \
 545             sed "s/\([^:]\):.*env \([^)' ]*\).*/\1 \2/" | uniq | \
 546             while read test prog; do \
 547               printf '%s' $$test | grep -q '\.pl$$' && continue; \
 548               grep -q "print_ver_.* $$prog" $$test \
 549                 || echo $$test should call: print_ver_ $$prog; \
 550             done | grep . && exit 1 || :
 551
 552 # Use framework_failure_, not the old name without the trailing underscore.
 553 sc_prohibit_framework_failure:
 554         @prohibit='\<framework_''failure\>'                             \
 555         halt='use framework_failure_ instead'                           \
 556           $(_sc_search_regexp)
 557
 558 # Prohibit the use of `...` in tests/.  Use $(...) instead.
 559 sc_prohibit_test_backticks:
 560         @prohibit='`' in_vc_files='^tests/'                             \
 561         halt='use $$(...), not `...` in tests/'                         \
 562           $(_sc_search_regexp)
 563
 564 # Ensure that compare is used to check empty files
 565 # so that the unexpected contents are displayed
 566 sc_prohibit_test_empty:
 567         @prohibit='test -s.*&&' in_vc_files='^tests/'                   \
 568         halt='use `compare /dev/null ...`, not `test -s ...` in tests/' \
 569           $(_sc_search_regexp)
 570
 571 # Programs like sort, ls, expr use PROG_FAILURE in place of EXIT_FAILURE.
 572 # Others, use the EXIT_CANCELED, EXIT_ENOENT, etc. macros defined in system.h.
 573 # In those programs, ensure that EXIT_FAILURE is not used by mistake.
 574 sc_some_programs_must_avoid_exit_failure:
 575         @grep -nw EXIT_FAILURE                                          \
 576             $$(git grep -El '[^T]_FAILURE|EXIT_CANCELED' $(srcdir)/src) \
 577           | grep -vE '= EXIT_FAILURE|return .* \?' | grep .             \
 578             && { echo '$(ME): do not use EXIT_FAILURE in the above'     \
 579                   1>&2; exit 1; } || :
 580
 581 # Ensure that tests call the get_min_ulimit_v_ function if using ulimit -v
 582 sc_prohibit_test_ulimit_without_require_:
 583         @(git grep -l get_min_ulimit_v_ $(srcdir)/tests;                \
 584           git grep -l 'ulimit -v' $(srcdir)/tests)                      \
 585           | sort | uniq -u | grep . && { echo "$(ME): the above test(s)"\
 586           " should match get_min_ulimit_v_ with ulimit -v" 1>&2; exit 1; } || :
 587
 588 # Ensure that tests call the cleanup_ function if using background processes
 589 sc_prohibit_test_background_without_cleanup_:
 590         @(git grep -El '( &$$|&[^&]*=\$$!)' $(srcdir)/tests;            \
 591           git grep -l 'cleanup_()' $(srcdir)/tests | sed p)             \
 592           | sort | uniq -u | grep . && { echo "$(ME): the above test(s)"\
 593           " should use cleanup_ for background processes" 1>&2; exit 1; } || :
 594
 595 # Ensure that tests call the print_ver_ function for programs which are
 596 # actually used in that test.
 597 sc_prohibit_test_calls_print_ver_with_irrelevant_argument:
 598         @git grep -w print_ver_ $(srcdir)/tests                         \
 599           | sed 's#:print_ver_##'                                       \
 600           | { fail=0;                                                   \
 601               while read file name; do                                  \
 602                 for i in $$name; do                                     \
 603                   case "$$i" in install) i=ginstall;; esac;             \
 604                   grep -w "$$i" $$file|grep -vw print_ver_|grep -q .    \
 605                     || { fail=1;                                        \
 606                          echo "*** Test: $$file, offending: $$i." 1>&2; };\
 607                 done;                                                   \
 608               done;                                                     \
 609               test $$fail = 0 || exit 1;                                \
 610             } || { echo "$(ME): the above test(s) call print_ver_ for"  \
 611                     "program(s) they don't use" 1>&2; exit 1; }
 612
 613 # Exempt the contents of any usage function from the following.
 614 _continued_string_col_1 = \
 615 s/^usage .*?\n}//ms;/\\\n\w/ and print ("$$ARGV\n"),$$e=1;END{$$e||=0;exit $$e}
 616 # Ding any source file that has a continued string with an alphabetic in the
 617 # first column of the following line.  We prohibit them because they usually
 618 # trigger false positives in tools that try to map an arbitrary line number
 619 # to the enclosing function name.  Of course, very many strings do precisely
 620 # this, *when they are part of the usage function*.  That is why we exempt
 621 # the contents of any function named "usage".
 622 sc_prohibit_continued_string_alpha_in_column_1:
 623         @perl -0777 -ne '$(_continued_string_col_1)' \
 624             $$($(VC_LIST_EXCEPT) | grep '\.[ch]$$') \
 625           || { echo '$(ME): continued string with word in first column' \
 626                 1>&2; exit 1; } || :
 627 # Use this to list offending lines:
 628 # git ls-files |grep '\.[ch]$' | xargs \
 629 #   perl -n -0777 -e 's/^usage.*?\n}//ms;/\\\n\w/ and print "$ARGV\n"' \
 630 #     | xargs grep -A1 '\\$'|grep '\.[ch][:-][_a-zA-Z]'
 631
 632
 633 ###########################################################
 634 _p0 = \([^"'/]\|"\([^\"]\|[\].\)*"\|'\([^\']\|[\].\)*'
 635 _pre = $(_p0)\|[/][^"'/*]\|[/]"\([^\"]\|[\].\)*"\|[/]'\([^\']\|[\].\)*'\)*
 636 _pre_anchored = ^\($(_pre)\)
 637 _comment_and_close = [^*]\|[*][^/*]\)*[*][*]*/
 638 # help font-lock mode: '
 639
 640 # A sed expression that removes ANSI C and ISO C99 comments.
 641 # Derived from the one in GNU gettext's 'moopp' preprocessor.
 642 _sed_remove_comments =                                  \
 643 /[/][/*]/{                                              \
 644   ta;                                                   \
 645   :a;                                                   \
 646   s,$(_pre_anchored)//.*,\1,;                           \
 647   te;                                                   \
 648   s,$(_pre_anchored)/[*]\($(_comment_and_close),\1 ,;   \
 649   ta;                                                   \
 650   /^$(_pre)[/][*]/{                                     \
 651     s,$(_pre_anchored)/[*].*,\1 ,;                      \
 652     tu;                                                 \
 653     :u;                                                 \
 654     n;                                                  \
 655     s,^\($(_comment_and_close),,;                       \
 656     tv;                                                 \
 657     s,^.*$$,,;                                          \
 658     bu;                                                 \
 659     :v;                                                 \
 660   };                                                    \
 661   :e;                                                   \
 662 }
 663 # Quote all single quotes.
 664 _sed_rm_comments_q = $(subst ','\'',$(_sed_remove_comments))
 665 # help font-lock mode: '
 666
 667 _space_before_paren_exempt =? \\n\\$$
 668 _space_before_paren_exempt = \
 669   (^ *\#|\\n\\$$|%s\(to %s|(date|group|character)\(s\))
 670 # Ensure that there is a space before each open parenthesis in C code.
 671 sc_space_before_open_paren:
 672         @if $(VC_LIST_EXCEPT) | grep -l '\.[ch]$$' > /dev/null; then    \
 673           fail=0;                                                       \
 674           for c in $$($(VC_LIST_EXCEPT) | grep '\.[ch]$$'); do          \
 675             sed '$(_sed_rm_comments_q)' $$c 2>/dev/null                 \
 676               | grep -i '[[:alnum:]]('                                  \
 677               | grep -vE '$(_space_before_paren_exempt)'                \
 678               | grep . && { fail=1; echo "*** $$c"; };                  \
 679           done;                                                         \
 680           test $$fail = 1 &&                                            \
 681             { echo '$(ME): the above files lack a space-before-open-paren' \
 682                 1>&2; exit 1; } || :;                                   \
 683         else :;                                                         \
 684         fi
 685
 686 # Similar to the gnulib maint.mk rule for sc_prohibit_strcmp
 687 # Use STREQ_LEN or STRPREFIX rather than comparing strncmp == 0, or != 0.
 688 sc_prohibit_strncmp:
 689         @prohibit='^[^#].*str''ncmp *\('                                \
 690         halt='use STREQ_LEN or STRPREFIX instead of str''ncmp'          \
 691           $(_sc_search_regexp)
 692
 693 # Enforce recommended preprocessor indentation style.
 694 sc_preprocessor_indentation:
 695         @if cppi --version >/dev/null 2>&1; then                        \
 696           $(VC_LIST_EXCEPT) | grep '\.[ch]$$' | xargs cppi -a -c        \
 697             || { echo '$(ME): incorrect preprocessor indentation' 1>&2; \
 698                 exit 1; };                                              \
 699         else                                                            \
 700           echo '$(ME): skipping test $@: cppi not installed' 1>&2;      \
 701         fi
 702
 703 # THANKS.in is a list of name/email pairs for people who are mentioned in
 704 # commit logs (and generated ChangeLog), but who are not also listed as an
 705 # author of a commit.  Name/email pairs of commit authors are automatically
 706 # extracted from the repository.  As a very minor factorization, when
 707 # someone who was initially listed only in THANKS.in later authors a commit,
 708 # this rule detects that their pair may now be removed from THANKS.in.
 709 sc_THANKS_in_duplicates:
 710         @{ git log --pretty=format:%aN | sort -u;                       \
 711             cut -b-36 $(srcdir)/THANKS.in                               \
 712               | sed '/^$$/,/^$$/!d;/^$$/d;s/  *$$//'; }                 \
 713           | sort | uniq -d | grep .                                     \
 714             && { echo '$(ME): remove the above names from THANKS.in'    \
 715                   1>&2; exit 1; } || :
 716
 717 # Ensure the contributor list stays sorted.  Use our sort as other
 718 # implementations may result in a different order.
 719 sc_THANKS_in_sorted:  src/sort
 720         @sed '/^$$/,/^$$/!d;/^$$/d' $(srcdir)/THANKS.in > $@.1;         \
 721         LC_ALL=en_US.UTF-8 src/sort -f -k1,1 $@.1 > $@.2
 722         @diff -u $@.1 $@.2; diff=$$?;                                   \
 723         rm -f $@.1 $@.2;                                                \
 724         test "$$diff" = 0                                               \
 725           || { echo '$(ME): THANKS.in is unsorted' 1>&2; exit 1; }
 726
 727 # Look for developer diagnostics that are marked for translation.
 728 # This won't find any for which devmsg's format string is on a separate line.
 729 sc_marked_devdiagnostics:
 730         @prohibit='\<devmsg *\(.*_\('                                   \
 731         halt='found marked developer diagnostic(s)'                     \
 732           $(_sc_search_regexp)
 733
 734 # Ensure we keep hex constants as 4 or 8 bytes for consistency
 735 # and so that make src/fs-magic-compare works consistently
 736 sc_fs-magic-compare:
 737         @sed -n 's|.*/\* \(0x[0-9A-Fa-f]\{1,\}\) .*\*/|\1|p'            \
 738           $(srcdir)/src/stat.c | grep -Ev '^0x([0-9A-F]{4}){1,2}$$'     \
 739             && { echo '$(ME): Constants in src/stat.c should be 4 or 8' \
 740                       'upper-case chars' 1>&2; exit 1; } || :
 741
 742 # Ensure gnulib generated files are ignored
 743 # TODO: Perhaps augment gnulib-tool to do this in lib/.gitignore?
 744 sc_gitignore_missing:
 745         @{ sed -n '/^\/lib\/.*\.h$$/{p;p}' .gitignore;                  \
 746             find lib -name '*.in*' ! -name '*~' ! -name 'sys_*' |       \
 747               sed 's|^|/|; s|_\(.*in\.h\)|/\1|; s/\.in//'; } |          \
 748               sort | uniq -u | grep . && { echo '$(ME): Add above'      \
 749                 'entries to .gitignore' >&2; exit 1; } || :
 750
 751 # Flag redundant entries in .gitignore
 752 sc_gitignore_redundant:
 753         @{ grep ^/lib .gitignore; sed 's|^|/lib|' lib/.gitignore; } |   \
 754             sort | uniq -d | grep . && { echo '$(ME): Remove above'     \
 755               'entries from .gitignore' >&2; exit 1; } || :
 756
 757 sc_prohibit-form-feed:
 758         @prohibit=$$'\f' \
 759         in_vc_files='\.[chly]$$' \
 760         halt='Form Feed (^L) detected' \
 761           $(_sc_search_regexp)
 762
 763 # Override the default Cc: used in generating an announcement.
 764 announcement_Cc_ = $(translation_project_), \
 765   coreutils@gnu.org, coreutils-announce@gnu.org
 766
 767 -include $(srcdir)/dist-check.mk
 768
 769 update-copyright-env = \
 770   UPDATE_COPYRIGHT_FORCE=1 \
 771   UPDATE_COPYRIGHT_USE_INTERVALS=2 \
 772   UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
 773
 774 # List syntax-check exemptions.
 775 exclude_file_name_regexp--sc_space_tab = \
 776   ^(tests/pr/|tests/misc/nl\.sh$$|gl/.*\.diff$$|man/help2man$$)
 777 exclude_file_name_regexp--sc_bindtextdomain = \
 778   ^(gl/.*|lib/euidaccess-stat|src/make-prime-list)\.c$$
 779 exclude_file_name_regexp--sc_trailing_blank = \
 780   ^(tests/pr/|gl/.*\.diff$$|man/help2man)
 781 exclude_file_name_regexp--sc_system_h_headers = \
 782   ^src/((system|copy)\.h|make-prime-list\.c)$$
 783
 784 _src = (false|lbracket|ls-(dir|ls|vdir)|tac-pipe|uname-(arch|uname))
 785 exclude_file_name_regexp--sc_require_config_h_first = \
 786   (^lib/buffer-lcm\.c|gl/lib/xdecto.max\.c|src/$(_src)\.c)$$
 787 exclude_file_name_regexp--sc_require_config_h = \
 788   $(exclude_file_name_regexp--sc_require_config_h_first)
 789
 790 exclude_file_name_regexp--sc_po_check = ^(gl/|man/help2man)
 791 exclude_file_name_regexp--sc_prohibit_always-defined_macros = \
 792   ^src/(seq|remove)\.c$$
 793 exclude_file_name_regexp--sc_prohibit_empty_lines_at_EOF = ^tests/pr/
 794 exclude_file_name_regexp--sc_program_name = \
 795   ^(gl/.*|lib/euidaccess-stat|src/make-prime-list)\.c$$
 796 exclude_file_name_regexp--sc_file_system = \
 797   NEWS|^(init\.cfg|src/df\.c|tests/df/df-P\.sh|tests/df/df-output\.sh)$$
 798 exclude_file_name_regexp--sc_prohibit_always_true_header_tests = \
 799   ^m4/stat-prog\.m4$$
 800 exclude_file_name_regexp--sc_prohibit_fail_0 = \
 801   (^.*/git-hooks/commit-msg|^tests/init\.sh|Makefile\.am|\.mk|.*\.texi)$$
 802 exclude_file_name_regexp--sc_prohibit_test_minus_ao = *\.texi$$
 803 exclude_file_name_regexp--sc_prohibit_atoi_atof = ^lib/euidaccess-stat\.c$$
 804
 805 # longlong.h is maintained elsewhere.
 806 _ll = ^src/longlong\.h$$
 807 exclude_file_name_regexp--sc_useless_cpp_parens = $(_ll)
 808 exclude_file_name_regexp--sc_space_before_open_paren = $(_ll)
 809
 810 tbi_1 = ^tests/pr/|(^gl/lib/reg.*\.c\.diff|\.mk|^man/help2man)$$
 811 tbi_2 = ^scripts/git-hooks/(pre-commit|pre-applypatch|applypatch-msg)$$
 812 tbi_3 = (GNU)?[Mm]akefile(\.am)?$$|$(_ll)
 813 exclude_file_name_regexp--sc_prohibit_tab_based_indentation = \
 814   $(tbi_1)|$(tbi_2)|$(tbi_3)
 815
 816 exclude_file_name_regexp--sc_preprocessor_indentation = \
 817   ^(gl/lib/rand-isaac\.[ch]|gl/tests/test-rand-isaac\.c)$$|$(_ll)
 818 exclude_file_name_regexp--sc_prohibit_stat_st_blocks = \
 819   ^(src/system\.h|tests/du/2g\.sh)$$
 820
 821 exclude_file_name_regexp--sc_prohibit_continued_string_alpha_in_column_1 = \
 822   ^src/(system\.h|od\.c|printf\.c|getlimits\.c)$$
 823
 824 exclude_file_name_regexp--sc_prohibit_test_backticks = \
 825   ^tests/(local\.mk|(init|misc/stdbuf|factor/create-test)\.sh)$$
 826
 827 # Exempt test.c, since it's nominally shared, and relatively static.
 828 exclude_file_name_regexp--sc_prohibit_operator_at_end_of_line = \
 829   ^src/(ptx|test|head)\.c$$
 830
 831 exclude_file_name_regexp--sc_error_message_uppercase = ^src/factor\.c$$
 832 exclude_file_name_regexp--sc_prohibit_atoi_atof = ^src/make-prime-list\.c$$
 833
 834 # Exception here as we don't want __attribute elided on non GCC
 835 exclude_file_name_regexp--sc_prohibit-gl-attributes = ^src/libstdbuf\.c$$
 836
 837 exclude_file_name_regexp--sc_prohibit_uppercase_id_est = \.diff$$
 838 exclude_file_name_regexp--sc_ensure_dblspace_after_dot_before_id_est = \.diff$$
 839 exclude_file_name_regexp--sc_ensure_comma_after_id_est = \.diff|$(_ll)$$
 840 exclude_file_name_regexp--sc_long_lines = \.diff$$|$(_ll)
 841
 842 # Augment AM_CFLAGS to include our per-directory options:
 843 AM_CFLAGS += $($(@D)_CFLAGS)
 844
 845 src_CFLAGS = $(WARN_CFLAGS)
 846 lib_CFLAGS = $(GNULIB_WARN_CFLAGS)
 847 gnulib-tests_CFLAGS = $(GNULIB_TEST_WARN_CFLAGS)
 848
 849 # Configuration to make the tight-scope syntax-check rule work with
 850 # non-recursive make.
 851 # Note _gl_TS_headers use _single line_ extern function declarations,
 852 # while *_SOURCES use the _two line_ form.
 853 export _gl_TS_headers = $(noinst_HEADERS)
 854 # Add exceptions for --enable-single-binary renamed functions.
 855 _gl_TS_unmarked_extern_functions = main usage
 856 _gl_TS_unmarked_extern_functions += single_binary_main_.* _usage_.*
 857 # Headers to search for single line extern _data_ declarations.
 858 _gl_TS_other_headers = $(srcdir)/src/*.h src/*.h
 859 # Tell the tight_scope rule about an exceptional "extern" variable.
 860 # Normally, the rule would detect its declaration, but that uses a
 861 # different name, __clz_tab.
 862 _gl_TS_unmarked_extern_vars = factor_clz_tab
 863 # Other tight_scope settings
 864 _gl_TS_dir = .
 865 _gl_TS_obj_files = src/*.$(OBJEXT)