--- rrd.c.orig	2020-08-28 12:06:18 UTC

+++ rrd.c

@@ -55,7 +55,7 @@ PHP_FUNCTION(rrd_fetch)

 	rrd_args *argv;

 	/* returned values if rrd_fetch doesn't fail */

 	time_t start, end;

-	ulong step,

+	u_long step,

 	ds_cnt; /* count of data sources */

 	char **ds_namv; /* list of data source names */

 	rrd_value_t *ds_data; /* all data from all sources */

@@ -396,11 +396,11 @@ PHP_FUNCTION(rrd_xport)

 	/* return values from rrd_xport */

 	int xxsize;

 	time_t start, end, time_index;

-	ulong step, outvar_count;

+	u_long step, outvar_count;

 	char **legend_v;

 	rrd_value_t *data, *data_ptr;

 	zval zv_data;

-	ulong outvar_index;

+	u_long outvar_index;

 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "a", &zv_arr_options) == FAILURE) {

 		return;