-AM_GNU_GETTEXT([external], [need-ngettext])
-AM_GNU_GETTEXT_VERSION(0.12.1)
+# We've never tested with gettext versions before 0.15, so play it safe.
+AM_GNU_GETTEXT([external], [need-formatstring-macros])
+AM_GNU_GETTEXT_VERSION([0.15])
+BISON_I18N
+
+# Internationalized parsers.
+AC_CONFIG_FILES([runtime-po/Makefile.in])
+# Autoconf macros for packages using internationalized parsers.
+aclocaldir='${datadir}/aclocal'
+AC_SUBST([aclocaldir])
+
+# Create the benchmark script.
+AC_CONFIG_FILES([etc/bench.pl], [chmod +x etc/bench.pl])