Index: libusb/libusb.h
--- libusb/libusb.h.orig
+++ libusb/libusb.h
@@ -47,6 +47,7 @@ typedef SSIZE_T ssize_t;
 #if !defined(_MSC_VER)
 #include <sys/time.h>
 #endif
+#include <sys/select.h> /* timeval */
 #include <time.h>
 
 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)