--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libuwrap/prelim_init.c	Thu Sep 07 04:00:56 2023 +0000
@@ -0,0 +1,23 @@
+/*
+ * libftdi-0.20 performs these preliminary steps just before it goes
+ * looking for the device of interest via usb_get_busses() followed
+ * by traversal of the returned tree - hence we do likewise.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <usb.h>
+#include "prelim_init.h"
+
+void libusb_prelim_init(void)
+{
+	usb_init();
+	if (usb_find_busses() < 0) {
+		fprintf(stderr, "error: usb_find_busses() failed\n");
+		exit(1);
+	}
+	if (usb_find_devices() < 0) {
+		fprintf(stderr, "error: usb_find_devices() failed\n");
+		exit(1);
+	}
+}