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-rw-r--r--maint.mk1248
1 files changed, 996 insertions, 252 deletions
diff --git a/maint.mk b/maint.mk
index ed9c1aa..76844a0 100644
--- a/maint.mk
+++ b/maint.mk
@@ -2,7 +2,7 @@
# This Makefile fragment tries to be general-purpose enough to be
# used by many projects via the gnulib maintainer-makefile module.
-## Copyright (C) 2001-2009 Free Software Foundation, Inc.
+## Copyright (C) 2001-2011 Free Software Foundation, Inc.
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
@@ -21,30 +21,59 @@
# ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
ME := maint.mk
-# Override this in cfg.mk if you use a non-standard build-aux directory.
-build_aux ?= $(srcdir)/build-aux
+# Diagnostic for continued use of deprecated variable.
+# Remove in 2013
+ifneq ($(build_aux),)
+ $(error "$(ME): \
+set $$(_build-aux) relative to $$(srcdir) instead of $$(build_aux)")
+endif
# Do not save the original name or timestamp in the .tar.gz file.
# Use --rsyncable if available.
gzip_rsyncable := \
- $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null && echo --rsyncable)
+ $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null \
+ && printf %s --rsyncable)
GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
-# cfg.mk must define the gpg_key_ID used by this package.
GIT = git
VC = $(GIT)
-VC-tag = git tag -s -m '$(VERSION)' -u '$(gpg_key_ID)'
-VC_LIST = $(build_aux)/vc-list-files -C $(srcdir)
+VC_LIST = $(srcdir)/$(_build-aux)/vc-list-files -C $(srcdir)
+
+# You can override this variable in cfg.mk to set your own regexp
+# matching files to ignore.
+VC_LIST_ALWAYS_EXCLUDE_REGEX ?= ^$$
+
+# This is to preprocess robustly the output of $(VC_LIST), so that even
+# when $(srcdir) is a pathological name like "....", the leading sed command
+# removes only the intended prefix.
+_dot_escaped_srcdir = $(subst .,\.,$(srcdir))
+
+# Post-process $(VC_LIST) output, prepending $(srcdir)/, but only
+# when $(srcdir) is not ".".
+ifeq ($(srcdir),.)
+_prepend_srcdir_prefix =
+else
+_prepend_srcdir_prefix = | sed 's|^|$(srcdir)/|'
+endif
+# In order to be able to consistently filter "."-relative names,
+# (i.e., with no $(srcdir) prefix), this definition is careful to
+# remove any $(srcdir) prefix, and to restore what it removes.
+_sc_excl = \
+ $(if $(exclude_file_name_regexp--$@),$(exclude_file_name_regexp--$@),^$$)
VC_LIST_EXCEPT = \
- $(VC_LIST) | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; else grep -v ChangeLog; fi
+ $(VC_LIST) | sed 's|^$(_dot_escaped_srcdir)/||' \
+ | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
+ else grep -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
+ | grep -Ev -e '($(VC_LIST_ALWAYS_EXCLUDE_REGEX)|$(_sc_excl))' \
+ $(_prepend_srcdir_prefix)
ifeq ($(origin prev_version_file), undefined)
prev_version_file = $(srcdir)/.prev-version
endif
-PREV_VERSION := $(shell cat $(prev_version_file))
+PREV_VERSION := $(shell cat $(prev_version_file) 2>/dev/null)
VERSION_REGEXP = $(subst .,\.,$(VERSION))
PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
@@ -62,6 +91,31 @@ my_distdir = $(PACKAGE)-$(VERSION)
# Old releases are stored here.
release_archive_dir ?= ../release
+# Override gnu_rel_host and url_dir_list in cfg.mk if these are not right.
+# Use alpha.gnu.org for alpha and beta releases.
+# Use ftp.gnu.org for stable releases.
+gnu_ftp_host-alpha = alpha.gnu.org
+gnu_ftp_host-beta = alpha.gnu.org
+gnu_ftp_host-stable = ftp.gnu.org
+gnu_rel_host ?= $(gnu_ftp_host-$(RELEASE_TYPE))
+
+ifeq ($(gnu_rel_host),ftp.gnu.org)
+url_dir_list ?= http://ftpmirror.gnu.org/$(PACKAGE)
+else
+url_dir_list ?= ftp://$(gnu_rel_host)/gnu/$(PACKAGE)
+endif
+
+# Override this in cfg.mk if you are using a different format in your
+# NEWS file.
+today = $(shell date +%Y-%m-%d)
+
+# Select which lines of NEWS are searched for $(news-check-regexp).
+# This is a sed line number spec. The default says that we search
+# lines 1..10 of NEWS for $(news-check-regexp).
+# If you want to search only line 3 or only lines 20-22, use "3" or "20,22".
+news-check-lines-spec ?= 1,10
+news-check-regexp ?= '^\*.* $(VERSION_REGEXP) \($(today)\)'
+
# Prevent programs like 'sort' from considering distinct strings to be equal.
# Doing it here saves us from having to set LC_ALL elsewhere in this file.
export LC_ALL = C
@@ -70,107 +124,235 @@ export LC_ALL = C
## Sanity checks. ##
## --------------- ##
+_cfg_mk := $(shell test -f $(srcdir)/cfg.mk && echo '$(srcdir)/cfg.mk')
+
# Collect the names of rules starting with `sc_'.
-syntax-check-rules := $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' \
- $(srcdir)/$(ME) $(srcdir)/cfg.mk)
+syntax-check-rules := $(sort $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' \
+ $(srcdir)/$(ME) $(_cfg_mk)))
.PHONY: $(syntax-check-rules)
-local-checks-available = \
- $(syntax-check-rules)
+ifeq ($(shell $(VC_LIST) >/dev/null 2>&1; echo $$?),0)
+local-checks-available += $(syntax-check-rules)
+else
+local-checks-available += no-vc-detected
+no-vc-detected:
+ @echo "No version control files detected; skipping syntax check"
+endif
.PHONY: $(local-checks-available)
# Arrange to print the name of each syntax-checking rule just before running it.
$(syntax-check-rules): %: %.m
-$(patsubst %, %.m, $(syntax-check-rules)):
+sc_m_rules_ = $(patsubst %, %.m, $(syntax-check-rules))
+.PHONY: $(sc_m_rules_)
+$(sc_m_rules_):
@echo $(patsubst sc_%.m, %, $@)
-
-local-check := $(filter-out $(local-checks-to-skip), $(local-checks-available))
+ @date +%s.%N > .sc-start-$(basename $@)
+
+# Compute and print the elapsed time for each syntax-check rule.
+sc_z_rules_ = $(patsubst %, %.z, $(syntax-check-rules))
+.PHONY: $(sc_z_rules_)
+$(sc_z_rules_): %.z: %
+ @end=$$(date +%s.%N); \
+ start=$$(cat .sc-start-$*); \
+ rm -f .sc-start-$*; \
+ awk -v s=$$start -v e=$$end \
+ 'END {printf "%.2f $(patsubst sc_%,%,$*)\n", e - s}' < /dev/null
+
+# The patsubst here is to replace each sc_% rule with its sc_%.z wrapper
+# that computes and prints elapsed time.
+local-check := \
+ $(patsubst sc_%, sc_%.z, \
+ $(filter-out $(local-checks-to-skip), $(local-checks-available)))
syntax-check: $(local-check)
-# @grep -nE '# *include <(limits|std(def|arg|bool))\.h>' \
-# $$(find -type f -name '*.[chly]') && \
-# { echo '$(ME): found conditional include' 1>&2; \
-# exit 1; } || :
-
-# grep -nE '^# *include <(string|stdlib)\.h>' \
-# $(srcdir)/{lib,src}/*.[chy] && \
-# { echo '$(ME): FIXME' 1>&2; \
-# exit 1; } || :
-# FIXME: don't allow `#include .strings\.h' anywhere
-
-# By default, _prohibit_regexp does not ignore case.
+
+# _sc_search_regexp
+#
+# This macro searches for a given construct in the selected files and
+# then takes some action.
+#
+# Parameters (shell variables):
+#
+# prohibit | require
+#
+# Regular expression (ERE) denoting either a forbidden construct
+# or a required construct. Those arguments are exclusive.
+#
+# in_vc_files | in_files
+#
+# grep-E-style regexp denoting the files to check. If no files
+# are specified the default are all the files that are under
+# version control.
+#
+# containing | non_containing
+#
+# Select the files (non) containing strings matching this regexp.
+# If both arguments are specified then CONTAINING takes
+# precedence.
+#
+# with_grep_options
+#
+# Extra options for grep.
+#
+# ignore_case
+#
+# Ignore case.
+#
+# halt
+#
+# Message to display before to halting execution.
+#
+# Finally, you may exempt files based on an ERE matching file names.
+# For example, to exempt from the sc_space_tab check all files with the
+# .diff suffix, set this Make variable:
+#
+# exclude_file_name_regexp--sc_space_tab = \.diff$
+#
+# Note that while this functionality is mostly inherited via VC_LIST_EXCEPT,
+# when filtering by name via in_files, we explicitly filter out matching
+# names here as well.
+
+# By default, _sc_search_regexp does not ignore case.
export ignore_case =
-_ignore_case = $$(test -n "$$ignore_case" && echo -i || :)
+_ignore_case = $$(test -n "$$ignore_case" && printf %s -i || :)
-# There are many rules below that prohibit constructs in this package.
-# If the offending construct can be matched with a grep-E-style regexp,
-# use this macro. The shell variables "re" and "msg" must be defined.
-define _prohibit_regexp
- dummy=; : so we do not need a semicolon before each use; \
- test "x$$re" != x || { echo '$(ME): re not defined' 1>&2; exit 1; }; \
- test "x$$msg" != x || { echo '$(ME): msg not defined' 1>&2; exit 1; };\
- grep $(_ignore_case) -nE "$$re" $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): '"$$msg" 1>&2; exit 1; } || :
+define _sc_say_and_exit
+ dummy=; : so we do not need a semicolon before each use; \
+ { printf '%s\n' "$(ME): $$msg" 1>&2; exit 1; };
+endef
+
+# _sc_search_regexp used to be named _prohibit_regexp. However,
+# upgrading to the new definition and leaving the old name undefined
+# would usually convert each custom rule using $(_prohibit_regexp)
+# (usually defined in cfg.mk) into a no-op. This definition ensures
+# that people know right away if they're still using the old name.
+# FIXME: remove in 2012.
+_prohibit_regexp = \
+ $(error '*** you need to s/_prohibit_regexp/_sc_search_regexp/, and adapt')
+
+define _sc_search_regexp
+ dummy=; : so we do not need a semicolon before each use; \
+ \
+ : Check arguments; \
+ test -n "$$prohibit" && test -n "$$require" \
+ && { msg='Cannot specify both prohibit and require' \
+ $(_sc_say_and_exit) } || :; \
+ test -z "$$prohibit" && test -z "$$require" \
+ && { msg='Should specify either prohibit or require' \
+ $(_sc_say_and_exit) } || :; \
+ test -n "$$in_vc_files" && test -n "$$in_files" \
+ && { msg='Cannot specify both in_vc_files and in_files' \
+ $(_sc_say_and_exit) } || :; \
+ test "x$$halt" != x \
+ || { msg='halt not defined' $(_sc_say_and_exit) }; \
+ \
+ : Filter by file name; \
+ if test -n "$$in_files"; then \
+ files=$$(find $(srcdir) | grep -E "$$in_files" \
+ | grep -Ev '$(exclude_file_name_regexp--$@)'); \
+ else \
+ files=$$($(VC_LIST_EXCEPT)); \
+ if test -n "$$in_vc_files"; then \
+ files=$$(echo "$$files" | grep -E "$$in_vc_files"); \
+ fi; \
+ fi; \
+ \
+ : Filter by content; \
+ test -n "$$files" && test -n "$$containing" \
+ && { files=$$(grep -l "$$containing" $$files); } || :; \
+ test -n "$$files" && test -n "$$non_containing" \
+ && { files=$$(grep -vl "$$non_containing" $$files); } || :; \
+ \
+ : Check for the construct; \
+ if test -n "$$files"; then \
+ if test -n "$$prohibit"; then \
+ grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
+ && { msg="$$halt" $(_sc_say_and_exit) } || :; \
+ else \
+ grep $$with_grep_options $(_ignore_case) -LE "$$require" $$files \
+ | grep . \
+ && { msg="$$halt" $(_sc_say_and_exit) } || :; \
+ fi \
+ else :; \
+ fi || :;
endef
sc_avoid_if_before_free:
- @$(build_aux)/useless-if-before-free \
+ @$(srcdir)/$(_build-aux)/useless-if-before-free \
$(useless_free_options) \
$$($(VC_LIST_EXCEPT) | grep -v useless-if-before-free) && \
{ echo '$(ME): found useless "if" before "free" above' 1>&2; \
exit 1; } || :
sc_cast_of_argument_to_free:
- @re='\<free *\( *\(' msg='don'\''t cast free argument' \
- $(_prohibit_regexp)
+ @prohibit='\<free *\( *\(' halt='don'\''t cast free argument' \
+ $(_sc_search_regexp)
sc_cast_of_x_alloc_return_value:
- @re='\*\) *x(m|c|re)alloc\>' \
- msg='don'\''t cast x*alloc return value' \
- $(_prohibit_regexp)
+ @prohibit='\*\) *x(m|c|re)alloc\>' \
+ halt='don'\''t cast x*alloc return value' \
+ $(_sc_search_regexp)
sc_cast_of_alloca_return_value:
- @re='\*\) *alloca\>' msg='don'\''t cast alloca return value' \
- $(_prohibit_regexp)
+ @prohibit='\*\) *alloca\>' \
+ halt='don'\''t cast alloca return value' \
+ $(_sc_search_regexp)
sc_space_tab:
- @re='[ ] ' msg='found SPACE-TAB sequence; remove the SPACE' \
- $(_prohibit_regexp)
+ @prohibit='[ ] ' \
+ halt='found SPACE-TAB sequence; remove the SPACE' \
+ $(_sc_search_regexp)
# Don't use *scanf or the old ato* functions in `real' code.
# They provide no error checking mechanism.
# Instead, use strto* functions.
sc_prohibit_atoi_atof:
- @re='\<([fs]?scanf|ato([filq]|ll)) *\(' \
- msg='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q' \
- $(_prohibit_regexp)
+ @prohibit='\<([fs]?scanf|ato([filq]|ll)) *\(' \
+ halt='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q' \
+ $(_sc_search_regexp)
# Use STREQ rather than comparing strcmp == 0, or != 0.
sc_prohibit_strcmp:
- @grep -nE '! *str''cmp *\(|\<str''cmp *\([^)]+\) *==' \
+ @grep -nE '! *str''cmp *\(|\<str''cmp *\(.+\) *[!=]=' \
$$($(VC_LIST_EXCEPT)) \
- | grep -vE ':# *define STREQ\(' && \
- { echo '$(ME): use STREQ in place of the above uses of str''cmp' \
+ | grep -vE ':# *define STRN?EQ\(' && \
+ { echo '$(ME): replace str''cmp calls above with STREQ/STRNEQ' \
1>&2; exit 1; } || :
+# Pass EXIT_*, not number, to usage, exit, and error (when exiting)
+# Convert all uses automatically, via these two commands:
+# git grep -l '\<exit *(1)' \
+# | grep -vEf .x-sc_prohibit_magic_number_exit \
+# | xargs --no-run-if-empty \
+# perl -pi -e 's/(^|[^.])\b(exit ?)\(1\)/$1$2(EXIT_FAILURE)/'
+# git grep -l '\<exit *(0)' \
+# | grep -vEf .x-sc_prohibit_magic_number_exit \
+# | xargs --no-run-if-empty \
+# perl -pi -e 's/(^|[^.])\b(exit ?)\(0\)/$1$2(EXIT_SUCCESS)/'
+sc_prohibit_magic_number_exit:
+ @prohibit='(^|[^.])\<(usage|exit) ?\([0-9]|\<error ?\([1-9][0-9]*,' \
+ halt='use EXIT_* values rather than magic number' \
+ $(_sc_search_regexp)
+
# Using EXIT_SUCCESS as the first argument to error is misleading,
# since when that parameter is 0, error does not exit. Use `0' instead.
sc_error_exit_success:
- @grep -nE 'error \(EXIT_SUCCESS,' \
- $$($(VC_LIST_EXCEPT) | grep -E '\.[chly]$$') && \
- { echo '$(ME): found error (EXIT_SUCCESS' 1>&2; exit 1; } || :
+ @prohibit='error *\(EXIT_SUCCESS,' \
+ in_vc_files='\.[chly]$$' \
+ halt='found error (EXIT_SUCCESS' \
+ $(_sc_search_regexp)
# `FATAL:' should be fully upper-cased in error messages
# `WARNING:' should be fully upper-cased, or fully lower-cased
sc_error_message_warn_fatal:
- @grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT)) \
+ @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
| grep -E '"Warning|"Fatal|"fatal' && \
{ echo '$(ME): use FATAL, WARNING or warning' 1>&2; \
exit 1; } || :
# Error messages should not start with a capital letter
sc_error_message_uppercase:
- @grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT)) \
+ @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
| grep -E '"[A-Z]' \
| grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' && \
{ echo '$(ME): found capitalized error message' 1>&2; \
@@ -178,35 +360,32 @@ sc_error_message_uppercase:
# Error messages should not end with a period
sc_error_message_period:
- @grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT)) \
+ @grep -nEA2 '[^rp]error *\(' $$($(VC_LIST_EXCEPT)) \
| grep -E '[^."]\."' && \
{ echo '$(ME): found error message ending in period' 1>&2; \
exit 1; } || :
sc_file_system:
- @re=file''system ignore_case=1 \
- msg='found use of "file''system"; spell it "file system"' \
- $(_prohibit_regexp)
+ @prohibit=file''system \
+ ignore_case=1 \
+ halt='found use of "file''system"; spell it "file system"' \
+ $(_sc_search_regexp)
# Don't use cpp tests of this symbol. All code assumes config.h is included.
sc_prohibit_have_config_h:
- @grep -n '^# *if.*HAVE''_CONFIG_H' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): found use of HAVE''_CONFIG_H; remove' \
- 1>&2; exit 1; } || :
+ @prohibit='^# *if.*HAVE''_CONFIG_H' \
+ halt='found use of HAVE''_CONFIG_H; remove' \
+ $(_sc_search_regexp)
# Nearly all .c files must include <config.h>. However, we also permit this
# via inclusion of a package-specific header, if cfg.mk specified one.
# config_h_header must be suitable for grep -E.
config_h_header ?= <config\.h>
sc_require_config_h:
- @if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then \
- grep -EL '^# *include $(config_h_header)' \
- $$($(VC_LIST_EXCEPT) | grep '\.c$$') \
- | grep . && \
- { echo '$(ME): the above files do not include <config.h>' \
- 1>&2; exit 1; } || :; \
- else :; \
- fi
+ @require='^# *include $(config_h_header)' \
+ in_vc_files='\.c$$' \
+ halt='the above files do not include <config.h>' \
+ $(_sc_search_regexp)
# You must include <config.h> before including any other header file.
# This can possibly be via a package-specific header, if given by cfg.mk.
@@ -225,14 +404,16 @@ sc_require_config_h_first:
fi
sc_prohibit_HAVE_MBRTOWC:
- @re='\bHAVE_MBRTOWC\b' msg="do not use $$re; it is always defined" \
- $(_prohibit_regexp)
+ @prohibit='\bHAVE_MBRTOWC\b' \
+ halt="do not use $$prohibit; it is always defined" \
+ $(_sc_search_regexp)
# To use this "command" macro, you must first define two shell variables:
-# h: the header, enclosed in <> or ""
+# h: the header name, with no enclosing <> or ""
# re: a regular expression that matches IFF something provided by $h is used.
-define _header_without_use
- h_esc=`echo "$$h"|sed 's/\./\\./g'`; \
+define _sc_header_without_use
+ dummy=; : so we do not need a semicolon before each use; \
+ h_esc=`echo '[<"]'"$$h"'[">]'|sed 's/\./\\\\./g'`; \
if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then \
files=$$(grep -l '^# *include '"$$h_esc" \
$$($(VC_LIST_EXCEPT) | grep '\.c$$')) && \
@@ -245,55 +426,124 @@ endef
# Prohibit the inclusion of assert.h without an actual use of assert.
sc_prohibit_assert_without_use:
- @h='<assert.h>' re='\<assert *\(' $(_header_without_use)
+ @h='assert.h' re='\<assert *\(' $(_sc_header_without_use)
+
+# Prohibit the inclusion of close-stream.h without an actual use.
+sc_prohibit_close_stream_without_use:
+ @h='close-stream.h' re='\<close_stream *\(' $(_sc_header_without_use)
# Prohibit the inclusion of getopt.h without an actual use.
sc_prohibit_getopt_without_use:
- @h='<getopt.h>' re='\<getopt(_long)? *\(' $(_header_without_use)
+ @h='getopt.h' re='\<getopt(_long)? *\(' $(_sc_header_without_use)
# Don't include quotearg.h unless you use one of its functions.
sc_prohibit_quotearg_without_use:
- @h='"quotearg.h"' re='\<quotearg(_[^ ]+)? *\(' $(_header_without_use)
+ @h='quotearg.h' re='\<quotearg(_[^ ]+)? *\(' $(_sc_header_without_use)
# Don't include quote.h unless you use one of its functions.
sc_prohibit_quote_without_use:
- @h='"quote.h"' re='\<quote(_n)? *\(' $(_header_without_use)
+ @h='quote.h' re='\<quote(_n)? *\(' $(_sc_header_without_use)
# Don't include this header unless you use one of its functions.
sc_prohibit_long_options_without_use:
- @h='"long-options.h"' re='\<parse_long_options *\(' \
- $(_header_without_use)
+ @h='long-options.h' re='\<parse_long_options *\(' \
+ $(_sc_header_without_use)
# Don't include this header unless you use one of its functions.
sc_prohibit_inttostr_without_use:
- @h='"inttostr.h"' re='\<(off|[iu]max|uint)tostr *\(' \
- $(_header_without_use)
+ @h='inttostr.h' re='\<(off|[iu]max|uint)tostr *\(' \
+ $(_sc_header_without_use)
+
+# Don't include this header unless you use one of its functions.
+sc_prohibit_ignore_value_without_use:
+ @h='ignore-value.h' re='\<ignore_(value|ptr) *\(' \
+ $(_sc_header_without_use)
# Don't include this header unless you use one of its functions.
sc_prohibit_error_without_use:
- @h='"error.h"' \
+ @h='error.h' \
re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
- $(_header_without_use)
+ $(_sc_header_without_use)
+
+# Don't include xalloc.h unless you use one of its functions.
+# Consider these symbols:
+# perl -lne '/^# *define (\w+)\(/ and print $1' lib/xalloc.h|grep -v '^__';
+# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/xalloc.h
+# Divide into two sets on case, and filter each through this:
+# | sort | perl -MRegexp::Assemble -le \
+# 'print Regexp::Assemble->new(file => "/dev/stdin")->as_string'|sed 's/\?://g'
+# Note this was produced by the above:
+# _xa1 = \
+#x(((2n?)?re|c(har)?|n(re|m)|z)alloc|alloc_(oversized|die)|m(alloc|emdup)|strdup)
+# But we can do better, in at least two ways:
+# 1) take advantage of two "dup"-suffixed strings:
+# x(((2n?)?re|c(har)?|n(re|m)|[mz])alloc|alloc_(oversized|die)|(mem|str)dup)
+# 2) notice that "c(har)?|[mz]" is equivalent to the shorter and more readable
+# "char|[cmz]"
+# x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
+_xa1 = x(((2n?)?re|char|n(re|m)|[cmz])alloc|alloc_(oversized|die)|(mem|str)dup)
+_xa2 = X([CZ]|N?M)ALLOC
+sc_prohibit_xalloc_without_use:
+ @h='xalloc.h' \
+ re='\<($(_xa1)|$(_xa2)) *\('\
+ $(_sc_header_without_use)
+
+# Extract function names:
+# perl -lne '/^(?:extern )?(?:void|char) \*?(\w+) *\(/ and print $1' lib/hash.h
+_hash_re = \
+clear|delete|free|get_(first|next)|insert|lookup|print_statistics|reset_tuning
+_hash_fn = \<($(_hash_re)) *\(
+_hash_struct = (struct )?\<[Hh]ash_(table|tuning)\>
+sc_prohibit_hash_without_use:
+ @h='hash.h' \
+ re='$(_hash_fn)|$(_hash_struct)'\
+ $(_sc_header_without_use)
+
+sc_prohibit_cloexec_without_use:
+ @h='cloexec.h' re='\<(set_cloexec_flag|dup_cloexec) *\(' \
+ $(_sc_header_without_use)
+
+sc_prohibit_posixver_without_use:
+ @h='posixver.h' re='\<posix2_version *\(' $(_sc_header_without_use)
+
+sc_prohibit_same_without_use:
+ @h='same.h' re='\<same_name *\(' $(_sc_header_without_use)
+
+sc_prohibit_hash_pjw_without_use:
+ @h='hash-pjw.h' \
+ re='\<hash_pjw *\(' \
+ $(_sc_header_without_use)
sc_prohibit_safe_read_without_use:
- @h='"safe-read.h"' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
- $(_header_without_use)
+ @h='safe-read.h' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
+ $(_sc_header_without_use)
sc_prohibit_argmatch_without_use:
- @h='"argmatch.h"' \
- re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<argmatch(_exit_fn|_(in)?valid) *\()' \
- $(_header_without_use)
+ @h='argmatch.h' \
+ re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<(invalid_arg|argmatch(_exit_fn|_(in)?valid)?) *\()' \
+ $(_sc_header_without_use)
+
+sc_prohibit_canonicalize_without_use:
+ @h='canonicalize.h' \
+ re='CAN_(EXISTING|ALL_BUT_LAST|MISSING)|canonicalize_(mode_t|filename_mode)' \
+ $(_sc_header_without_use)
sc_prohibit_root_dev_ino_without_use:
- @h='"root-dev-ino.h"' \
+ @h='root-dev-ino.h' \
re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
- $(_header_without_use)
+ $(_sc_header_without_use)
+
+sc_prohibit_openat_without_use:
+ @h='openat.h' \
+ re='\<(openat_(permissive|needs_fchdir|(save|restore)_fail)|l?(stat|ch(own|mod))at|(euid)?accessat)\>' \
+ $(_sc_header_without_use)
# Prohibit the inclusion of c-ctype.h without an actual use.
ctype_re = isalnum|isalpha|isascii|isblank|iscntrl|isdigit|isgraph|islower\
|isprint|ispunct|isspace|isupper|isxdigit|tolower|toupper
sc_prohibit_c_ctype_without_use:
- @h='[<"]c-ctype.h[">]' re='\<c_($(ctype_re)) *\(' $(_header_without_use)
+ @h='c-ctype.h' re='\<c_($(ctype_re)) *\(' \
+ $(_sc_header_without_use)
_empty =
_sp = $(_empty) $(_empty)
@@ -328,126 +578,394 @@ _sig_syms_re = $(subst $(_sp),|,$(strip $(_sig_names) $(_sig_types_and_consts)))
# Prohibit the inclusion of signal.h without an actual use.
sc_prohibit_signal_without_use:
- @h='<signal.h>' \
+ @h='signal.h' \
re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>' \
- $(_header_without_use)
+ $(_sc_header_without_use)
+
+# Don't include stdio--.h unless you use one of its functions.
+sc_prohibit_stdio--_without_use:
+ @h='stdio--.h' re='\<((f(re)?|p)open|tmpfile) *\(' \
+ $(_sc_header_without_use)
+
+# Don't include stdio-safer.h unless you use one of its functions.
+sc_prohibit_stdio-safer_without_use:
+ @h='stdio-safer.h' re='\<((f(re)?|p)open|tmpfile)_safer *\(' \
+ $(_sc_header_without_use)
+
+# Prohibit the inclusion of strings.h without a sensible use.
+# Using the likes of bcmp, bcopy, bzero, index or rindex is not sensible.
+sc_prohibit_strings_without_use:
+ @h='strings.h' \
+ re='\<(strn?casecmp|ffs(ll)?)\>' \
+ $(_sc_header_without_use)
+
+# Get the list of symbol names with this:
+# perl -lne '/^# *define ([A-Z]\w+)\(/ and print $1' lib/intprops.h|fmt
+_intprops_names = \
+ TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT \
+ TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM \
+ INT_BITS_STRLEN_BOUND INT_STRLEN_BOUND INT_BUFSIZE_BOUND \
+ INT_ADD_RANGE_OVERFLOW INT_SUBTRACT_RANGE_OVERFLOW \
+ INT_NEGATE_RANGE_OVERFLOW INT_MULTIPLY_RANGE_OVERFLOW \
+ INT_DIVIDE_RANGE_OVERFLOW INT_REMAINDER_RANGE_OVERFLOW \
+ INT_LEFT_SHIFT_RANGE_OVERFLOW INT_ADD_OVERFLOW INT_SUBTRACT_OVERFLOW \
+ INT_NEGATE_OVERFLOW INT_MULTIPLY_OVERFLOW INT_DIVIDE_OVERFLOW \
+ INT_REMAINDER_OVERFLOW INT_LEFT_SHIFT_OVERFLOW
+_intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
+# Prohibit the inclusion of intprops.h without an actual use.
+sc_prohibit_intprops_without_use:
+ @h='intprops.h' \
+ re='\<($(_intprops_syms_re)) *\(' \
+ $(_sc_header_without_use)
+
+_stddef_syms_re = NULL|offsetof|ptrdiff_t|size_t|wchar_t
+# Prohibit the inclusion of stddef.h without an actual use.
+sc_prohibit_stddef_without_use:
+ @h='stddef.h' \
+ re='\<($(_stddef_syms_re))\>' \
+ $(_sc_header_without_use)
+
+_de1 = dirfd|(close|(fd)?open|read|rewind|seek|tell)dir(64)?(_r)?
+_de2 = (versionsort|struct dirent|getdirentries|alphasort|scandir(at)?)(64)?
+_de3 = MAXNAMLEN|DIR|ino_t|d_ino|d_fileno|d_namlen
+_dirent_syms_re = $(_de1)|$(_de2)|$(_de3)
+# Prohibit the inclusion of dirent.h without an actual use.
+sc_prohibit_dirent_without_use:
+ @h='dirent.h' \
+ re='\<($(_dirent_syms_re))\>' \
+ $(_sc_header_without_use)
+
+# Prohibit the inclusion of verify.h without an actual use.
+sc_prohibit_verify_without_use:
+ @h='verify.h' \
+ re='\<(verify(true|expr)?|static_assert) *\(' \
+ $(_sc_header_without_use)
+
+# Don't include xfreopen.h unless you use one of its functions.
+sc_prohibit_xfreopen_without_use:
+ @h='xfreopen.h' re='\<xfreopen *\(' $(_sc_header_without_use)
sc_obsolete_symbols:
- @re='\<(HAVE''_FCNTL_H|O''_NDELAY)\>' \
- msg='do not use HAVE''_FCNTL_H or O'_NDELAY \
- $(_prohibit_regexp)
+ @prohibit='\<(HAVE''_FCNTL_H|O''_NDELAY)\>' \
+ halt='do not use HAVE''_FCNTL_H or O'_NDELAY \
+ $(_sc_search_regexp)
# FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
# Each nonempty ChangeLog line must start with a year number, or a TAB.
sc_changelog:
- @if $(VC_LIST_EXCEPT) | grep -l '^ChangeLog$$' >/dev/null; then \
- grep -n '^[^12 ]' \
- $$($(VC_LIST_EXCEPT) | grep '^ChangeLog$$') && \
- { echo '$(ME): found unexpected prefix in a ChangeLog' 1>&2; \
- exit 1; } || :; \
- fi
+ @prohibit='^[^12 ]' \
+ in_vc_files='^ChangeLog$$' \
+ halt='found unexpected prefix in a ChangeLog' \
+ $(_sc_search_regexp)
# Ensure that each .c file containing a "main" function also
# calls set_program_name.
sc_program_name:
- @if $(VC_LIST_EXCEPT) | grep -l '\.c$$' > /dev/null; then \
- files=$$(grep -l '^main *(' $$($(VC_LIST_EXCEPT) | grep '\.c$$')); \
- grep -LE 'set_program_name *\(m?argv\[0\]\);' $$files \
- | grep . && \
- { echo '$(ME): the above files do not call set_program_name' \
- 1>&2; exit 1; } || :; \
- else :; \
- fi
+ @require='set_program_name *\(m?argv\[0\]\);' \
+ in_vc_files='\.c$$' \
+ containing='\<main *(' \
+ halt='the above files do not call set_program_name' \
+ $(_sc_search_regexp)
+
+# Ensure that each .c file containing a "main" function also
+# calls bindtextdomain.
+sc_bindtextdomain:
+ @require='bindtextdomain *\(' \
+ in_vc_files='\.c$$' \
+ containing='\<main *(' \
+ halt='the above files do not call bindtextdomain' \
+ $(_sc_search_regexp)
# Require that the final line of each test-lib.sh-using test be this one:
# Exit $fail
# Note: this test requires GNU grep's --label= option.
+Exit_witness_file ?= tests/test-lib.sh
+Exit_base := $(notdir $(Exit_witness_file))
sc_require_test_exit_idiom:
- @if test -f $(srcdir)/tests/test-lib.sh; then \
+ @if test -f $(srcdir)/$(Exit_witness_file); then \
die=0; \
- for i in $$(grep -l -F /../test-lib.sh $$($(VC_LIST) tests)); do \
- tail -n1 $$i | grep '^Exit \$$fail$$' > /dev/null \
+ for i in $$(grep -l -F 'srcdir/$(Exit_base)' \
+ $$($(VC_LIST) tests)); do \
+ tail -n1 $$i | grep '^Exit .' > /dev/null \
&& : || { die=1; echo $$i; } \
done; \
test $$die = 1 && \
{ echo 1>&2 '$(ME): the final line in each of the above is not:'; \
- echo 1>&2 'Exit $$fail'; \
+ echo 1>&2 'Exit something'; \
exit 1; } || :; \
fi
-sc_the_the:
- @re='\<the ''the\>' \
- ignore_case=1 msg='found use of "the ''the";' \
- $(_prohibit_regexp)
-
sc_trailing_blank:
- @re='[ ]$$' \
- msg='found trailing blank(s)' \
- $(_prohibit_regexp)
+ @prohibit='[ ]$$' \
+ halt='found trailing blank(s)' \
+ $(_sc_search_regexp)
# Match lines like the following, but where there is only one space
# between the options and the description:
# -D, --all-repeated[=delimit-method] print all duplicate lines\n
longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
sc_two_space_separator_in_usage:
- @grep -nE '^ *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$' \
- $$($(VC_LIST_EXCEPT)) && \
- { echo "$(ME): help2man requires at least two spaces between"; \
- echo "$(ME): an option and its description"; \
- 1>&2; exit 1; } || :
+ @prohibit='^ *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$' \
+ halt='help2man requires at least two spaces between an option and its description'\
+ $(_sc_search_regexp)
+
+# A regexp matching function names like "error" that may be used
+# to emit translatable messages.
+_gl_translatable_diag_func_re ?= error
# Look for diagnostics that aren't marked for translation.
# This won't find any for which error's format string is on a separate line.
sc_unmarked_diagnostics:
@grep -nE \
- '\<error \([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT)) \
- | grep -v '_''(' && \
+ '\<$(_gl_translatable_diag_func_re) *\([^"]*"[^"]*[a-z]{3}' \
+ $$($(VC_LIST_EXCEPT)) \
+ | grep -Ev '(_|ngettext ?)\(' && \
{ echo '$(ME): found unmarked diagnostic(s)' 1>&2; \
exit 1; } || :
# Avoid useless parentheses like those in this example:
# #if defined (SYMBOL) || defined (SYM2)
sc_useless_cpp_parens:
- @grep -n '^# *if .*defined *(' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): found useless parentheses in cpp directive' \
- 1>&2; exit 1; } || :
+ @prohibit='^# *if .*defined *\(' \
+ halt='found useless parentheses in cpp directive' \
+ $(_sc_search_regexp)
+
+# List headers for which HAVE_HEADER_H is always true, assuming you are
+# using the appropriate gnulib module. CAUTION: for each "unnecessary"
+# #if HAVE_HEADER_H that you remove, be sure that your project explicitly
+# requires the gnulib module that guarantees the usability of that header.
+gl_assured_headers_ = \
+ cd $(gnulib_dir)/lib && echo *.in.h|sed 's/\.in\.h//g'
+
+# Convert the list of names to upper case, and replace each space with "|".
+az_ = abcdefghijklmnopqrstuvwxyz
+AZ_ = ABCDEFGHIJKLMNOPQRSTUVWXYZ
+gl_header_upper_case_or_ = \
+ $$($(gl_assured_headers_) \
+ | tr $(az_)/.- $(AZ_)___ \
+ | tr -s ' ' '|' \
+ )
+sc_prohibit_always_true_header_tests:
+ @or=$(gl_header_upper_case_or_); \
+ re="HAVE_($$or)_H"; \
+ prohibit='\<'"$$re"'\>' \
+ halt=$$(printf '%s\n' \
+ 'do not test the above HAVE_<header>_H symbol(s);' \
+ ' with the corresponding gnulib module, they are always true') \
+ $(_sc_search_regexp)
+
+# ==================================================================
+gl_other_headers_ ?= \
+ intprops.h \
+ openat.h \
+ stat-macros.h
+
+# Perl -lne code to extract "significant" cpp-defined symbols from a
+# gnulib header file, eliminating a few common false-positives.
+# The exempted names below are defined only conditionally in gnulib,
+# and hence sometimes must/may be defined in application code.
+gl_extract_significant_defines_ = \
+ /^\# *define ([^_ (][^ (]*)(\s*\(|\s+\w+)/\
+ && $$2 !~ /(?:rpl_|_used_without_)/\
+ && $$1 !~ /^(?:NSIG|ENODATA)$$/\
+ && $$1 !~ /^(?:SA_RESETHAND|SA_RESTART)$$/\
+ and print $$1
+
+# Create a list of regular expressions matching the names
+# of macros that are guaranteed to be defined by parts of gnulib.
+define def_sym_regex
+ gen_h=$(gl_generated_headers_); \
+ (cd $(gnulib_dir)/lib; \
+ for f in *.in.h $(gl_other_headers_); do \
+ test -f $$f \
+ && perl -lne '$(gl_extract_significant_defines_)' $$f; \
+ done; \
+ ) | sort -u \
+ | sed 's/^/^ *# *(define|undef) */;s/$$/\\>/'
+endef
+
+# Don't define macros that we already get from gnulib header files.
+sc_prohibit_always-defined_macros:
+ @if test -d $(gnulib_dir); then \
+ case $$(echo all: | grep -l -f - Makefile) in Makefile);; *) \
+ echo '$(ME): skipping $@: you lack GNU grep' 1>&2; exit 0;; \
+ esac; \
+ $(def_sym_regex) | grep -E -f - $$($(VC_LIST_EXCEPT)) \
+ && { echo '$(ME): define the above via some gnulib .h file' \
+ 1>&2; exit 1; } || :; \
+ fi
+# ==================================================================
+
+# Prohibit checked in backup files.
+sc_prohibit_backup_files:
+ @$(VC_LIST) | grep '~$$' && \
+ { echo '$(ME): found version controlled backup file' 1>&2; \
+ exit 1; } || :
# Require the latest GPL.
sc_GPL_version:
- @re='either ''version [^3]' msg='GPL vN, N!=3' \
- $(_prohibit_regexp)
+ @prohibit='either ''version [^3]' \
+ halt='GPL vN, N!=3' \
+ $(_sc_search_regexp)
+
+# Require the latest GFDL. Two regexp, since some .texi files end up
+# line wrapping between 'Free Documentation License,' and 'Version'.
+_GFDL_regexp = (Free ''Documentation.*Version 1\.[^3]|Version 1\.[^3] or any)
+sc_GFDL_version:
+ @prohibit='$(_GFDL_regexp)' \
+ halt='GFDL vN, N!=3' \
+ $(_sc_search_regexp)
+
+# Don't use Texinfo's @acronym{}.
+# http://lists.gnu.org/archive/html/bug-gnulib/2010-03/msg00321.html
+texinfo_suffix_re_ ?= \.(txi|texi(nfo)?)$$
+sc_texinfo_acronym:
+ @prohibit='@acronym\{' \
+ in_vc_files='$(texinfo_suffix_re_)' \
+ halt='found use of Texinfo @acronym{}' \
+ $(_sc_search_regexp)
cvs_keywords = \
Author|Date|Header|Id|Name|Locker|Log|RCSfile|Revision|Source|State
sc_prohibit_cvs_keyword:
- @re='\$$($(cvs_keywords))\$$' \
- msg='do not use CVS keyword expansion' \
- $(_prohibit_regexp)
+ @prohibit='\$$($(cvs_keywords))\$$' \
+ halt='do not use CVS keyword expansion' \
+ $(_sc_search_regexp)
+
+# This Perl code is slightly obfuscated. Not only is each "$" doubled
+# because it's in a Makefile, but the $$c's are comments; we cannot
+# use "#" due to the way the script ends up concatenated onto one line.
+# It would be much more concise, and would produce better output (including
+# counts) if written as:
+# perl -ln -0777 -e '/\n(\n+)$/ and print "$ARGV: ".length $1' ...
+# but that would be far less efficient, reading the entire contents
+# of each file, rather than just the last two bytes of each.
+# In addition, while the code below detects both blank lines and a missing
+# newline at EOF, the above detects only the former.
+#
+# This is a perl script that is expected to be the single-quoted argument
+# to a command-line "-le". The remaining arguments are file names.
+# Print the name of each file that ends in exactly one newline byte.
+# I.e., warn if there are blank lines (2 or more newlines), or if the
+# last byte is not a newline. However, currently we don't complain
+# about any file that contains exactly one byte.
+# Exit nonzero if at least one such file is found, otherwise, exit 0.
+# Warn about, but otherwise ignore open failure. Ignore seek/read failure.
+#
+# Use this if you want to remove trailing empty lines from selected files:
+# perl -pi -0777 -e 's/\n\n+$/\n/' files...
+#
+require_exactly_one_NL_at_EOF_ = \
+ foreach my $$f (@ARGV) \
+ { \
+ open F, "<", $$f or (warn "failed to open $$f: $$!\n"), next; \
+ my $$p = sysseek (F, -2, 2); \
+ my $$c = "seek failure probably means file has < 2 bytes; ignore"; \
+ my $$last_two_bytes; \
+ defined $$p and $$p = sysread F, $$last_two_bytes, 2; \
+ close F; \
+ $$c = "ignore read failure"; \
+ $$p && ($$last_two_bytes eq "\n\n" \
+ || substr ($$last_two_bytes,1) ne "\n") \
+ and (print $$f), $$fail=1; \
+ } \
+ END { exit defined $$fail }
+sc_prohibit_empty_lines_at_EOF:
+ @perl -le '$(require_exactly_one_NL_at_EOF_)' $$($(VC_LIST_EXCEPT)) \
+ || { echo '$(ME): empty line(s) or no newline at EOF' \
+ 1>&2; exit 1; } || :
# Make sure we don't use st_blocks. Use ST_NBLOCKS instead.
# This is a bit of a kludge, since it prevents use of the string
# even in comments, but for now it does the job with no false positives.
sc_prohibit_stat_st_blocks:
- @re='[.>]st_blocks' msg='do not use st_blocks; use ST_NBLOCKS' \
- $(_prohibit_regexp)
+ @prohibit='[.>]st_blocks' \
+ halt='do not use st_blocks; use ST_NBLOCKS' \
+ $(_sc_search_regexp)
# Make sure we don't define any S_IS* macros in src/*.c files.
# They're already defined via gnulib's sys/stat.h replacement.
sc_prohibit_S_IS_definition:
- @re='^ *# *define *S_IS' \
- msg='do not define S_IS* macros; include <sys/stat.h>' \
- $(_prohibit_regexp)
-
-# Each program that uses proper_name_utf8 must link with
-# one of the ICONV libraries.
+ @prohibit='^ *# *define *S_IS' \
+ halt='do not define S_IS* macros; include <sys/stat.h>' \
+ $(_sc_search_regexp)
+
+# Perl block to convert a match to FILE_NAME:LINENO:TEST,
+# that is shared by two definitions below.
+perl_filename_lineno_text_ = \
+ -e ' {' \
+ -e ' $$n = ($$` =~ tr/\n/\n/ + 1);' \
+ -e ' ($$v = $$&) =~ s/\n/\\n/g;' \
+ -e ' print "$$ARGV:$$n:$$v\n";' \
+ -e ' }'
+
+prohibit_doubled_word_RE_ ?= \
+ /\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b/gims
+prohibit_doubled_word_ = \
+ -e 'while ($(prohibit_doubled_word_RE_))' \
+ $(perl_filename_lineno_text_)
+
+# Define this to a regular expression that matches
+# any filename:dd:match lines you want to ignore.
+# The default is to ignore no matches.
+ignore_doubled_word_match_RE_ ?= ^$$
+
+sc_prohibit_doubled_word:
+ @perl -n -0777 $(prohibit_doubled_word_) $$($(VC_LIST_EXCEPT)) \
+ | grep -vE '$(ignore_doubled_word_match_RE_)' \
+ | grep . && { echo '$(ME): doubled words' 1>&2; exit 1; } || :
+
+# A regular expression matching undesirable combinations of words like
+# "can not"; this matches them even when the two words appear on different
+# lines, but not when there is an intervening delimiter like "#" or "*".
+prohibit_undesirable_word_seq_RE_ ?= \
+ /\bcan\s+not\b/gims
+prohibit_undesirable_word_seq_ = \
+ -e 'while ($(prohibit_undesirable_word_seq_RE_))' \
+ $(perl_filename_lineno_text_)
+# Define this to a regular expression that matches
+# any filename:dd:match lines you want to ignore.
+# The default is to ignore no matches.
+ignore_undesirable_word_sequence_RE_ ?= ^$$
+
+sc_prohibit_undesirable_word_seq:
+ @perl -n -0777 $(prohibit_undesirable_word_seq_) \
+ $$($(VC_LIST_EXCEPT)) \
+ | grep -vE '$(ignore_undesirable_word_sequence_RE_)' | grep . \
+ && { echo '$(ME): undesirable word sequence' >&2; exit 1; } || :
+
+_ptm1 = use "test C1 && test C2", not "test C1 -''a C2"
+_ptm2 = use "test C1 || test C2", not "test C1 -''o C2"
+# Using test's -a and -o operators is not portable.
+# We prefer test over [, since the latter is spelled [[ in configure.ac.
+sc_prohibit_test_minus_ao:
+ @prohibit='(\<test| \[+) .+ -[ao] ' \
+ halt='$(_ptm1); $(_ptm2)' \
+ $(_sc_search_regexp)
+
+# Avoid a test bashism.
+sc_prohibit_test_double_equal:
+ @prohibit='(\<test| \[+) .+ == ' \
+ containing='#! */bin/[a-z]*sh' \
+ halt='use "test x = x", not "test x =''= x"' \
+ $(_sc_search_regexp)
+
+# Each program that uses proper_name_utf8 must link with one of the
+# ICONV libraries. Otherwise, some ICONV library must appear in LDADD.
+# The perl -0777 invocation below extracts the possibly-multi-line
+# definition of LDADD from the appropriate Makefile.am and exits 0
+# when it contains "ICONV".
sc_proper_name_utf8_requires_ICONV:
@progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
if test "x$$progs" != x; then \
fail=0; \
for p in $$progs; do \
dir=$$(dirname "$$p"); \
+ perl -0777 \
+ -ne 'exit !(/^LDADD =(.+?[^\\]\n)/ms && $$1 =~ /ICONV/)' \
+ $$dir/Makefile.am && continue; \
base=$$(basename "$$p" .c); \
grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null \
|| { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
@@ -460,9 +978,9 @@ sc_proper_name_utf8_requires_ICONV:
# Warn about "c0nst struct Foo const foo[]",
# but not about "char const *const foo" or "#define const const".
sc_redundant_const:
- @re='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b' \
- msg='redundant "const" in declarations' \
- $(_prohibit_regexp)
+ @prohibit='\bconst\b[[:space:][:alnum:]]{2,}\bconst\b' \
+ halt='redundant "const" in declarations' \
+ $(_sc_search_regexp)
sc_const_long_option:
@grep '^ *static.*struct option ' $$($(VC_LIST_EXCEPT)) \
@@ -473,7 +991,8 @@ sc_const_long_option:
NEWS_hash = \
$$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p' \
$(srcdir)/NEWS \
- | grep -v '^Copyright .*Free Software' \
+ | perl -0777 -pe \
+ 's/^Copyright.+?Free\sSoftware\sFoundation,\sInc\.\n//ms' \
| md5sum - \
| sed 's/ .*//')
@@ -487,56 +1006,68 @@ sc_immutable_NEWS:
# Update the hash stored above. Do this after each release and
# for any corrections to old entries.
update-NEWS-hash: NEWS
- perl -pi -e 's/^(old_NEWS_hash = ).*/$${1}'"$(NEWS_hash)/" \
+ perl -pi -e 's/^(old_NEWS_hash[ \t]+:?=[ \t]+).*/$${1}'"$(NEWS_hash)/" \
$(srcdir)/cfg.mk
# Ensure that we use only the standard $(VAR) notation,
# not @...@ in Makefile.am, now that we can rely on automake
# to emit a definition for each substituted variable.
-# We use perl rather than "grep -nE ..." to exempt a single
-# use of an @...@-delimited variable name in src/Makefile.am.
-sc_makefile_check:
- @perl -ne '/\@[A-Z_0-9]+\@/ && !/^cu_install_program =/' \
+# However, there is still one case in which @VAR@ use is not just
+# legitimate, but actually required: when augmenting an automake-defined
+# variable with a prefix. For example, gettext uses this:
+# MAKEINFO = env LANG= LC_MESSAGES= LC_ALL= LANGUAGE= @MAKEINFO@
+# otherwise, makeinfo would put German or French (current locale)
+# navigation hints in the otherwise-English documentation.
+#
+# Allow the package to add exceptions via a hook in cfg.mk;
+# for example, @PRAGMA_SYSTEM_HEADER@ can be permitted by
+# setting this to ' && !/PRAGMA_SYSTEM_HEADER/'.
+_makefile_at_at_check_exceptions ?=
+sc_makefile_at_at_check:
+ @perl -ne '/\@[A-Z_0-9]+\@/' \
+ -e ' && !/([A-Z_0-9]+)\s+=.*\@\1\@$$/' \
+ -e ''$(_makefile_at_at_check_exceptions) \
-e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}' \
- $$($(VC_LIST_EXCEPT) | grep -E '(^|/)Makefile\.am$$') \
+ $$($(VC_LIST_EXCEPT) | grep -E '(^|/)(Makefile\.am|[^/]+\.mk)$$') \
&& { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
-news-date-check: NEWS
- today=`date +%Y-%m-%d`; \
- if head $(srcdir)/NEWS | grep '^\*.* $(VERSION_REGEXP) ('$$today')' \
- >/dev/null; then \
+news-check: NEWS
+ if sed -n $(news-check-lines-spec)p $(srcdir)/NEWS \
+ | grep -E $(news-check-regexp) >/dev/null; then \
:; \
else \
- echo "version or today's date is not in NEWS" 1>&2; \
+ echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2; \
exit 1; \
fi
sc_makefile_TAB_only_indentation:
- @grep -nE '^ [ ]{8}' \
- $$($(VC_LIST_EXCEPT) | grep -E 'akefile|\.mk$$') \
- && { echo '$(ME): found TAB-8-space indentation' 1>&2; \
- exit 1; } || :
+ @prohibit='^ [ ]{8}' \
+ in_vc_files='akefile|\.mk$$' \
+ halt='found TAB-8-space indentation' \
+ $(_sc_search_regexp)
sc_m4_quote_check:
- @grep -nE '(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]' \
- $$($(VC_LIST_EXCEPT) | grep -E '(^configure\.ac|\.m4)$$') \
- && { echo '$(ME): quote the first arg to AC_DEF*' 1>&2; \
- exit 1; } || :
+ @prohibit='(AC_DEFINE(_UNQUOTED)?|AC_DEFUN)\([^[]' \
+ in_vc_files='(^configure\.ac|\.m4)$$' \
+ halt='quote the first arg to AC_DEF*' \
+ $(_sc_search_regexp)
fix_po_file_diag = \
'you have changed the set of files with translatable diagnostics;\n\
apply the above patch\n'
# Verify that all source files using _() are listed in po/POTFILES.in.
-po_file = po/POTFILES.in
+po_file ?= $(srcdir)/po/POTFILES.in
+generated_files ?= $(srcdir)/lib/*.[ch]
sc_po_check:
@if test -f $(po_file); then \
grep -E -v '^(#|$$)' $(po_file) \
| grep -v '^src/false\.c$$' | sort > $@-1; \
files=; \
- for file in $$($(VC_LIST_EXCEPT)) lib/*.[ch]; do \
+ for file in $$($(VC_LIST_EXCEPT)) $(generated_files); do \
test -r $$file || continue; \
case $$file in \
+ *.m4|*.mk) continue ;; \
*.?|*.??) ;; \
*) continue;; \
esac; \
@@ -548,7 +1079,7 @@ sc_po_check:
files="$$files $$file"; \
done; \
grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files \
- | sort -u > $@-2; \
+ | sed 's|^$(_dot_escaped_srcdir)/||' | sort -u > $@-2; \
diff -u -L $(po_file) -L $(po_file) $@-1 $@-2 \
|| { printf '$(ME): '$(fix_po_file_diag) 1>&2; exit 1; }; \
rm -f $@-1 $@-2; \
@@ -559,47 +1090,100 @@ sc_po_check:
# path separator of `:', but rather the automake-provided `$(PATH_SEPARATOR)'.
msg = '$(ME): Do not use `:'\'' above; use $$(PATH_SEPARATOR) instead'
sc_makefile_path_separator_check:
- @grep -nE 'PATH[=].*:' \
- $$($(VC_LIST_EXCEPT) | grep -E 'akefile|\.mk$$') \
- && { echo $(msg) 1>&2; exit 1; } || :
-
-# Check that `make alpha' will not fail at the end of the process.
+ @prohibit='PATH[=].*:' \
+ in_vc_files='akefile|\.mk$$' \
+ halt=$(msg) \
+ $(_sc_search_regexp)
+
+# Check that `make alpha' will not fail at the end of the process,
+# i.e., when pkg-M.N.tar.xz already exists (either in "." or in ../release)
+# and is read-only.
writable-files:
- if test -d $(release_archive_dir); then :; else \
- for file in $(distdir).tar.gz \
- $(release_archive_dir)/$(distdir).tar.gz; do \
- test -e $$file || continue; \
- test -w $$file \
- || { echo ERROR: $$file is not writable; fail=1; }; \
+ if test -d $(release_archive_dir); then \
+ for file in $(DIST_ARCHIVES); do \
+ for p in ./ $(release_archive_dir)/; do \
+ test -e $$p$$file || continue; \
+ test -w $$p$$file \
+ || { echo ERROR: $$p$$file is not writable; fail=1; }; \
+ done; \
done; \
test "$$fail" && exit 1 || : ; \
+ else :; \
fi
-v_etc_file = lib/version-etc.c
+v_etc_file = $(gnulib_dir)/lib/version-etc.c
sample-test = tests/sample-test
texi = doc/$(PACKAGE).texi
# Make sure that the copyright date in $(v_etc_file) is up to date.
# Do the same for the $(sample-test) and the main doc/.texi file.
sc_copyright_check:
- @if test -f $(v_etc_file); then \
- grep 'enum { COPYRIGHT_YEAR = '$$(date +%Y)' };' $(v_etc_file) \
- >/dev/null \
- || { echo 'out of date copyright in $(v_etc_file); update it' 1>&2; \
- exit 1; }; \
- fi
- @if test -f $(sample-test); then \
- grep '# Copyright (C) '$$(date +%Y)' Free' $(sample-test) \
- >/dev/null \
- || { echo 'out of date copyright in $(sample-test); update it' 1>&2; \
- exit 1; }; \
- fi
- @if test -f $(texi); then \
- grep 'Copyright @copyright{} .*'$$(date +%Y)' Free' $(texi) \
- >/dev/null \
- || { echo 'out of date copyright in $(texi); update it' 1>&2; \
- exit 1; }; \
+ @require='enum { COPYRIGHT_YEAR = '$$(date +%Y)' };' \
+ in_files=$(v_etc_file) \
+ halt='out of date copyright in $(v_etc_file); update it' \
+ $(_sc_search_regexp)
+ @require='# Copyright \(C\) '$$(date +%Y)' Free' \
+ in_vc_files=$(sample-test) \
+ halt='out of date copyright in $(sample-test); update it' \
+ $(_sc_search_regexp)
+ @require='Copyright @copyright\{\} .*'$$(date +%Y)' Free' \
+ in_vc_files=$(texi) \
+ halt='out of date copyright in $(texi); update it' \
+ $(_sc_search_regexp)
+
+# If tests/help-version exists and seems to be new enough, assume that its
+# use of init.sh and path_prepend_ is correct, and ensure that every other
+# use of init.sh is identical.
+# This is useful because help-version cross-checks prog --version
+# with $(VERSION), which verifies that its path_prepend_ invocation
+# sets PATH correctly. This is an inexpensive way to ensure that
+# the other init.sh-using tests also get it right.
+_hv_file ?= $(srcdir)/tests/help-version
+_hv_regex_weak ?= ^ *\. .*/init\.sh"
+# Fix syntax-highlighters "
+_hv_regex_strong ?= ^ *\. "\$${srcdir=\.}/init\.sh"
+sc_cross_check_PATH_usage_in_tests:
+ @if test -f $(_hv_file); then \
+ grep -l 'VERSION mismatch' $(_hv_file) >/dev/null \
+ || { echo "$@: skipped: no such file: $(_hv_file)" 1>&2; \
+ exit 0; }; \
+ grep -lE '$(_hv_regex_strong)' $(_hv_file) >/dev/null \
+ || { echo "$@: $(_hv_file) lacks conforming use of init.sh" 1>&2; \
+ exit 1; }; \
+ good=$$(grep -E '$(_hv_regex_strong)' $(_hv_file)); \
+ grep -LFx "$$good" \
+ $$(grep -lE '$(_hv_regex_weak)' $$($(VC_LIST_EXCEPT))) \
+ | grep . && \
+ { echo "$(ME): the above files use path_prepend_ inconsistently" \
+ 1>&2; exit 1; } || :; \
fi
+# #if HAVE_... will evaluate to false for any non numeric string.
+# That would be flagged by using -Wundef, however gnulib currently
+# tests many undefined macros, and so we can't enable that option.
+# So at least preclude common boolean strings as macro values.
+sc_Wundef_boolean:
+ @prohibit='^#define.*(yes|no|true|false)$$' \
+ in_files='$(CONFIG_INCLUDE)' \
+ halt='Use 0 or 1 for macro values' \
+ $(_sc_search_regexp)
+
+# Even if you use pathmax.h to guarantee that PATH_MAX is defined, it might
+# not be constant, or might overflow a stack. In general, use PATH_MAX as
+# a limit, not an array or alloca size.
+sc_prohibit_path_max_allocation:
+ @prohibit='(\balloca *\([^)]*|\[[^]]*)PATH_MAX' \
+ halt='Avoid stack allocations of size PATH_MAX' \
+ $(_sc_search_regexp)
+
+sc_vulnerable_makefile_CVE-2009-4029:
+ @prohibit='perm -777 -exec chmod a\+rwx|chmod 777 \$$\(distdir\)' \
+ in_files=$$(find $(srcdir) -name Makefile.in) \
+ halt=$$(printf '%s\n' \
+ 'the above files are vulnerable; beware of running' \
+ ' "make dist*" rules, and upgrade to fixed automake' \
+ ' see http://bugzilla.redhat.com/542609 for details') \
+ $(_sc_search_regexp)
+
vc-diff-check:
(unset CDPATH; cd $(srcdir) && $(VC) diff) > vc-diffs || :
if test -s vc-diffs; then \
@@ -610,46 +1194,44 @@ vc-diff-check:
rm vc-diffs; \
fi
-cvs-check: vc-diff-check
-
-ALL_RECURSIVE_TARGETS += maintainer-distcheck
-maintainer-distcheck:
- $(MAKE) distcheck
- $(MAKE) taint-distcheck
- $(MAKE) my-distcheck
-
-
-# Don't make a distribution if checks fail.
-# Also, make sure the NEWS file is up-to-date.
-ALL_RECURSIVE_TARGETS += vc-dist
-vc-dist: $(local-check) cvs-check maintainer-distcheck
- XZ_OPT=-9ev $(MAKE) dist
-
-# Use this to make sure we don't run these programs when building
-# from a virgin tgz file, below.
-null_AM_MAKEFLAGS = \
- ACLOCAL=false \
- AUTOCONF=false \
- AUTOMAKE=false \
- AUTOHEADER=false \
- MAKEINFO=false
-
-built_programs = $$(cd src && MAKEFLAGS= $(MAKE) -s built_programs.list)
-
rel-files = $(DIST_ARCHIVES)
gnulib_dir ?= $(srcdir)/gnulib
gnulib-version = $$(cd $(gnulib_dir) && git describe)
bootstrap-tools ?= autoconf,automake,gnulib
+# If it's not already specified, derive the GPG key ID from
+# the signed tag we've just applied to mark this release.
+gpg_key_ID ?= \
+ $$(git cat-file tag v$(VERSION) \
+ | gpgv --status-fd 1 --keyring /dev/null - - 2>/dev/null \
+ | sed -n '/^\[GNUPG:\] ERRSIG /{s///;s/ .*//p;q}')
+
+translation_project_ ?= coordinator@translationproject.org
+
+# Make info-gnu the default only for a stable release.
+ifeq ($(RELEASE_TYPE),stable)
+ announcement_Cc_ ?= $(translation_project_), $(PACKAGE_BUGREPORT)
+ announcement_mail_headers_ ?= \
+ To: info-gnu@gnu.org \
+ Cc: $(announcement_Cc_) \
+ Mail-Followup-To: $(PACKAGE_BUGREPORT)
+else
+ announcement_Cc_ ?= $(translation_project_)
+ announcement_mail_headers_ ?= \
+ To: $(PACKAGE_BUGREPORT) \
+ Cc: $(announcement_Cc_)
+endif
+
announcement: NEWS ChangeLog $(rel-files)
- @$(build_aux)/announce-gen \
+ @$(srcdir)/$(_build-aux)/announce-gen \
+ --mail-headers='$(announcement_mail_headers_)' \
--release-type=$(RELEASE_TYPE) \
--package=$(PACKAGE) \
--prev=$(PREV_VERSION) \
--curr=$(VERSION) \
--gpg-key-id=$(gpg_key_ID) \
- --news=NEWS \
+ --news=$(srcdir)/NEWS \
--bootstrap-tools=$(bootstrap-tools) \
--gnulib-version=$(gnulib-version) \
--no-print-checksums \
@@ -662,21 +1244,21 @@ announcement: NEWS ChangeLog $(rel-files)
ftp-gnu = ftp://ftp.gnu.org/gnu
www-gnu = http://www.gnu.org
+upload_dest_dir_ ?= $(PACKAGE)
emit_upload_commands:
@echo =====================================
@echo =====================================
- @echo "$(build_aux)/gnupload $(GNUPLOADFLAGS) \\"
- @echo " --to $(gnu_rel_host):$(PACKAGE) \\"
+ @echo "$(srcdir)/$(_build-aux)/gnupload $(GNUPLOADFLAGS) \\"
+ @echo " --to $(gnu_rel_host):$(upload_dest_dir_) \\"
@echo " $(rel-files)"
- @echo '# send the /tmp/announcement e-mail'
+ @echo '# send the ~/announce-$(my_distdir) e-mail'
@echo =====================================
@echo =====================================
-noteworthy = * Noteworthy changes in release ?.? (????-??-??) [?]
define emit-commit-log
- printf '%s\n' 'post-release administrivia' '' \
- '* NEWS: Add header line for next release.' \
- '* .prev-version: Record previous version.' \
+ printf '%s\n' 'maint: post-release administrivia' '' \
+ '* NEWS: Add header line for next release.' \
+ '* .prev-version: Record previous version.' \
'* cfg.mk (old_NEWS_hash): Auto-update.'
endef
@@ -693,33 +1275,76 @@ no-submodule-changes:
: ; \
fi
-.PHONY: alpha beta major
-ALL_RECURSIVE_TARGETS += alpha beta major
-alpha beta major: $(local-check) writable-files no-submodule-changes
- test $@ = major \
- && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$' \
+submodule-checks ?= no-submodule-changes public-submodule-commit
+
+# Ensure that each sub-module commit we're using is public.
+# Without this, it is too easy to tag and release code that
+# cannot be built from a fresh clone.
+.PHONY: public-submodule-commit
+public-submodule-commit:
+ $(AM_V_GEN)if test -d $(srcdir)/.git; then \
+ cd $(srcdir) && \
+ git submodule --quiet foreach test '$$(git rev-parse $$sha1)' \
+ = '$$(git merge-base origin $$sha1)' \
+ || { echo '$(ME): found non-public submodule commit' >&2; \
+ exit 1; }; \
+ else \
+ : ; \
+ fi
+# This rule has a high enough utility/cost ratio that it should be a
+# dependent of "check" by default. However, some of us do occasionally
+# commit a temporary change that deliberately points to a non-public
+# submodule commit, and want to be able to use rules like "make check".
+# In that case, run e.g., "make check gl_public_submodule_commit="
+# to disable this test.
+gl_public_submodule_commit ?= public-submodule-commit
+check: $(gl_public_submodule_commit)
+
+.PHONY: alpha beta stable
+ALL_RECURSIVE_TARGETS += alpha beta stable
+alpha beta stable: $(local-check) writable-files $(submodule-checks)
+ test $@ = stable \
+ && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$' \
|| { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
|| :
- $(MAKE) vc-dist
- $(MAKE) news-date-check
- $(MAKE) -s announcement RELEASE_TYPE=$@ > /tmp/announce-$(my_distdir)
+ $(MAKE) vc-diff-check
+ $(MAKE) news-check
+ $(MAKE) distcheck
+ $(MAKE) dist XZ_OPT=-9ev
+ $(MAKE) $(release-prep-hook) RELEASE_TYPE=$@
+ $(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
+
+# Override this in cfg.mk if you follow different procedures.
+release-prep-hook ?= release-prep
+
+gl_noteworthy_news_ = * Noteworthy changes in release ?.? (????-??-??) [?]
+.PHONY: release-prep
+release-prep:
+ case $$RELEASE_TYPE in alpha|beta|stable) ;; \
+ *) echo "invalid RELEASE_TYPE: $$RELEASE_TYPE" 1>&2; exit 1;; esac
+ $(MAKE) --no-print-directory -s announcement > ~/announce-$(my_distdir)
if test -d $(release_archive_dir); then \
ln $(rel-files) $(release_archive_dir); \
chmod a-w $(rel-files); \
fi
- $(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
echo $(VERSION) > $(prev_version_file)
$(MAKE) update-NEWS-hash
- perl -pi -e '$$. == 3 and print "$(noteworthy)\n\n\n"' NEWS
+ perl -pi -e '$$. == 3 and print "$(gl_noteworthy_news_)\n\n\n"' NEWS
$(emit-commit-log) > .ci-msg
$(VC) commit -F .ci-msg -a
+ rm .ci-msg
+
+# Override this with e.g., -s $(srcdir)/some_other_name.texi
+# if the default $(PACKAGE)-derived name doesn't apply.
+gendocs_options_ ?=
.PHONY: web-manual
web-manual:
@test -z "$(manual_title)" \
&& { echo define manual_title in cfg.mk 1>&2; exit 1; } || :
@cd '$(srcdir)/doc'; \
- $(SHELL) ../build-aux/gendocs.sh -o '$(abs_builddir)/doc/manual' \
+ $(SHELL) ../$(_build-aux)/gendocs.sh $(gendocs_options_) \
+ -o '$(abs_builddir)/doc/manual' \
--email $(PACKAGE_BUGREPORT) $(PACKAGE) \
"$(PACKAGE_NAME) - $(manual_title)"
@echo " *** Upload the doc/manual directory to web-cvs."
@@ -761,7 +1386,126 @@ refresh-po:
echo 'en@quot' >> $(PODIR)/LINGUAS && \
ls $(PODIR)/*.po | sed 's/\.po//' | sed 's,$(PODIR)/,,' | sort >> $(PODIR)/LINGUAS
+ # Running indent once is not idempotent, but running it twice is.
INDENT_SOURCES ?= $(C_SOURCES)
.PHONY: indent
indent:
indent $(INDENT_SOURCES)
+ indent $(INDENT_SOURCES)
+
+# If you want to set UPDATE_COPYRIGHT_* environment variables,
+# put the assignments in this variable.
+update-copyright-env ?=
+
+# Run this rule once per year (usually early in January)
+# to update all FSF copyright year lists in your project.
+# If you have an additional project-specific rule,
+# add it in cfg.mk along with a line 'update-copyright: prereq'.
+# By default, exclude all variants of COPYING; you can also
+# add exemptions (such as ChangeLog..* for rotated change logs)
+# in the file .x-update-copyright.
+.PHONY: update-copyright
+update-copyright:
+ grep -l -w Copyright \
+ $$(export VC_LIST_EXCEPT_DEFAULT=COPYING && $(VC_LIST_EXCEPT)) \
+ | $(update-copyright-env) xargs $(srcdir)/$(_build-aux)/$@
+
+# This tight_scope test is skipped with a warning if $(_gl_TS_headers) is not
+# overridden and $(_gl_TS_dir)/Makefile.am does not mention noinst_HEADERS.
+
+# NOTE: to override any _gl_TS_* default value, you must
+# define the variable(s) using "export" in cfg.mk.
+_gl_TS_dir ?= src
+
+ALL_RECURSIVE_TARGETS += sc_tight_scope
+sc_tight_scope: tight-scope.mk
+ @fail=0; \
+ if ! grep '^ *export _gl_TS_headers *=' $(srcdir)/cfg.mk \
+ > /dev/null \
+ && ! grep -w noinst_HEADERS $(srcdir)/$(_gl_TS_dir)/Makefile.am \
+ > /dev/null 2>&1; then \
+ echo '$(ME): skipping $@'; \
+ else \
+ $(MAKE) -s -C $(_gl_TS_dir) \
+ -f Makefile \
+ -f $(abs_top_srcdir)/cfg.mk \
+ -f $(abs_top_builddir)/$< \
+ _gl_tight_scope \
+ || fail=1; \
+ fi; \
+ rm -f $<; \
+ exit $$fail
+
+tight-scope.mk: $(ME)
+ @rm -f $@ $@-t
+ @perl -ne '/^# TS-start/.../^# TS-end/ and print' $(srcdir)/$(ME) > $@-t
+ @chmod a=r $@-t && mv $@-t $@
+
+ifeq (a,b)
+# TS-start
+
+# Most functions should have static scope.
+# Any that don't must be marked with `extern', but `main'
+# and `usage' are exceptions: they're always extern, but
+# do not need to be marked. Symbols matching `__.*' are
+# reserved by the compiler, so are automatically excluded below.
+_gl_TS_unmarked_extern_functions ?= main usage
+_gl_TS_function_match ?= /^(?:$(_gl_TS_extern)) +.*?(\S+) *\(/
+
+# If your project uses a macro like "XTERN", then put
+# the following in cfg.mk to override this default:
+# export _gl_TS_extern = extern|XTERN
+_gl_TS_extern ?= extern
+
+# The second nm|grep checks for file-scope variables with `extern' scope.
+# Without gnulib's progname module, you might put program_name here.
+# Symbols matching `__.*' are reserved by the compiler,
+# so are automatically excluded below.
+_gl_TS_unmarked_extern_vars ?=
+
+# NOTE: the _match variables are perl expressions -- not mere regular
+# expressions -- so that you can extend them to match other patterns
+# and easily extract matched variable names.
+# For example, if your project declares some global variables via
+# a macro like this: GLOBAL(type, var_name, initializer), then you
+# can override this definition to automatically extract those names:
+# export _gl_TS_var_match = \
+# /^(?:$(_gl_TS_extern)) .*?\**(\w+)(\[.*?\])?;/ || /\bGLOBAL\(.*?,\s*(.*?),/
+_gl_TS_var_match ?= /^(?:$(_gl_TS_extern)) .*?(\w+)(\[.*?\])?;/
+
+# The names of object files in (or relative to) $(_gl_TS_dir).
+_gl_TS_obj_files ?= *.$(OBJEXT)
+
+# Files in which to search for the one-line style extern declarations.
+# $(_gl_TS_dir)-relative.
+_gl_TS_headers ?= $(noinst_HEADERS)
+
+.PHONY: _gl_tight_scope
+_gl_tight_scope: $(bin_PROGRAMS)
+ t=exceptions-$$$$; \
+ trap 's=$$?; rm -f $$t; exit $$s' 0; \
+ for sig in 1 2 3 13 15; do \
+ eval "trap 'v=`expr $$sig + 128`; (exit $$v); exit $$v' $$sig"; \
+ done; \
+ src=`for f in $(SOURCES); do \
+ test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`; \
+ hdr=`for f in $(_gl_TS_headers); do \
+ test -f $$f && d= || d=$(srcdir)/; echo $$d$$f; done`; \
+ ( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_functions); \
+ grep -h -A1 '^extern .*[^;]$$' $$src \
+ | grep -vE '^(extern |--)' | sed 's/ .*//'; \
+ perl -lne \
+ '$(_gl_TS_function_match) and print "^$$1\$$"' $$hdr; \
+ ) | sort -u > $$t; \
+ nm -e $(_gl_TS_obj_files) | sed -n 's/.* T //p'|grep -Ev -f $$t \
+ && { echo the above functions should have static scope >&2; \
+ exit 1; } || : ; \
+ ( printf '^%s$$\n' '__.*' $(_gl_TS_unmarked_extern_vars); \
+ perl -lne '$(_gl_TS_var_match) and print "^$$1\$$"' $$hdr *.h \
+ ) | sort -u > $$t; \
+ nm -e $(_gl_TS_obj_files) | sed -n 's/.* [BCDGRS] //p' \
+ | sort -u | grep -Ev -f $$t \
+ && { echo the above variables should have static scope >&2; \
+ exit 1; } || :
+# TS-end
+endif
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