+# Files in m4/ that (exceptionally) may use AC_LIBOBJ.
+# Do not include their ".m4" suffix.
+allow_AC_LIBOBJ = \
+ close \
+ dprintf \
+ dup2 \
+ faccessat \
+ fchdir \
+ fclose \
+ fcntl \
+ fprintf-posix \
+ open \
+ printf-posix-rpl \
+ snprintf \
+ sprintf-posix \
+ stdio_h \
+ vasnprintf \
+ vasprintf \
+ vdprintf \
+ vfprintf-posix \
+ vprintf-posix \
+ vsnprintf \
+ vsprintf-posix
+
+allow_AC_LIBOBJ_or := $(shell echo $(allow_AC_LIBOBJ) | tr -s ' ' '|')
+
+sc_prohibit_AC_LIBOBJ_in_m4:
+ url=http://article.gmane.org/gmane.comp.lib.gnulib.bugs/26995; \
+ if test -d .git; then \
+ git ls-files m4 \
+ | grep -Ev '^m4/($(allow_AC_LIBOBJ_or))\.m4$$' \
+ | xargs grep '^ *AC_LIBOBJ(' \
+ && { printf '%s\n' 'Do not use AC_LIBOBJ in m4/*.m4;' \
+ "see <$$url>"; exit 1; } || :; \
+ else :; fi
+
+sc_pragma_columns:
+ if test -d .git; then \
+ git ls-files|grep '\.in\.h$$' \
+ | xargs grep -l '^@PRAGMA_SYSTEM_HEADER@' \
+ | xargs grep -L '^@PRAGMA_COLUMNS@' \
+ | grep . \
+ && { printf '%s\n' \
+ 'the files listed above use @PRAGMA_SYSTEM_HEADER@' \
+ 'without also using @PRAGMA_COLUMNS@' 1>&2; \
+ exit 1; } || :; \
+ else :; fi
+
+# Verify that certain (for now, only Jim Meyering and Eric Blake's)
+# *.c files are consistently cpp indented.
+sc_cpp_indent_check:
+ ./gnulib-tool --extract-filelist \
+ $$(cd ./modules; grep -ilrE '(meyering|blake)' .) \
+ | sort -u \
+ | grep '\.c$$' \
+ | grep -vE '/(stdio-(read|write)|getloadavg)\.c$$' \
+ | xargs cppi -c
+
+# Ensure that the list of symbols checked for by the
+# sc_prohibit_intprops_without_use rule match those in the actual file.
+# Extract the symbols from the .h file and compare with the list of
+# symbols extracted from the rule in maint.mk.
+sc_check_sym_list:
+ i=lib/intprops.h; \
+ diff -u <(perl -lne '/^# *define ([A-Z]\w+)\(/ and print $$1' $$i|fmt) \
+ <(sed -n /^_intprops_name/,/^_intprops_syms_re/p top/maint.mk \
+ |sed '/^_/d;s/^ //;s/ *\\$$//')
+
+# Regenerate some files that are stored in the repository.