Remove unlocked-io.h rule -- now it's in its final resting place:

lib/Makefile.am.

Makefile.cfg

@@ -23,13 +23,13 @@ wget_files = \
 
 ###############################################
 
+# FIXME: CAUTION this list is a duplicate of one in ../Makefile.cfg.
 io_functions = \
   clearerr feof ferror fflush fgets fputc fputs \
   fread fwrite getc getchar putc putchar
 unlocked_io_functions = $(patsubst %,%_unlocked,$(io_functions))
 
 comma_separated = $(shell echo $(unlocked_io_functions)|tr -s ' ' ,)
-base_functions = $(patsubst %_unlocked,%,$(unlocked_io_functions))
 
 # This temp file may not be e.g., $@t, since that may be in a read-only
 # directory.  Instead, use a file in the current directory.
@@ -45,20 +45,3 @@ $(srcdir)/m4/jm-glibc-io.m4: $(srcdir)/m4/jm-glibc-io.m4n Makefile.am
 	  -e 's/@comma_separated@/$(comma_separated)/g'		\
 	  $< >> $(t_io)
 	move-if-change $(t_io) $@
-
-# This rule requires GNU make.
-unlocked-io.h: unlocked-io.hin Makefile.cfg
-	tmp=t$$$$;							\
-	echo						> $$tmp;	\
-	for f in $(base_functions); do					\
-	  u=`echo $$f|tr '[:lower:]' '[:upper:]'`;			\
-	  echo "#  if HAVE_$${u}_UNLOCKED"		>> $$tmp;	\
-	  echo "#   undef $$f"				>> $$tmp;	\
-	  echo "#   define $$f(S) $${f}_unlocked (S)"	>> $$tmp;	\
-	  echo '#endif'					>> $$tmp;	\
-	done;								\
-	sed "/^@replace_this@$$/r$$tmp" $<				\
-	  | sed "/^@replace_this@$$/d"					\
-	  > $@t;							\
-	rm -f $$tmp;							\
-	mv $@t $@