VC_LIST = $(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 ?= ^$$
+
VC_LIST_EXCEPT = \
$(VC_LIST) | if test -f $(srcdir)/.x-$@; then grep -vEf $(srcdir)/.x-$@; \
- else grep -Ev "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi
+ else grep -Ev -e "$${VC_LIST_EXCEPT_DEFAULT-ChangeLog}"; fi \
+ | grep -Ev -e '$(VC_LIST_ALWAYS_EXCLUDE_REGEX)'
ifeq ($(origin prev_version_file), undefined)
prev_version_file = $(srcdir)/.prev-version
msg='do not define S_IS* macros; include <sys/stat.h>' \
$(_prohibit_regexp)
-# Each program that uses proper_name_utf8 must link with
-# one of the ICONV libraries.
+# Each program that uses proper_name_utf8 must link with one of the
+# ICONV libraries. Otherwise, some ICONV library must appear in LDADD.
+# The perl -0777 invocation below extracts the possibly-multi-line
+# definition of LDADD from the appropriate Makefile.am and exits 0
+# when it contains "ICONV".
sc_proper_name_utf8_requires_ICONV:
@progs=$$(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"; }; \
# 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 =/' \
+# 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]+\@/'$(_makefile_at_at_check_exceptions) \
-e 'and (print "$$ARGV:$$.: $$_"), $$m=1; END {exit !$$m}' \
$$($(VC_LIST_EXCEPT) | grep -E '(^|/)Makefile\.am$$') \
&& { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :