-#serial 6
+#serial 7
dnl From Jim Meyering.
dnl Determine whether chown accepts arguments of -1 for uid and gid.
dnl If it doesn't, arrange to use the replacement function.
dnl
-AC_DEFUN(jm_FUNC_CHOWN,
+AC_DEFUN([jm_FUNC_CHOWN],
[AC_REQUIRE([AC_TYPE_UID_T])dnl
test -z "$ac_cv_header_unistd_h" \
&& AC_CHECK_HEADERS(unistd.h)