Lowercase reference to iphlpapi.lib
#include <sys/timeb.h>
#include <iphlpapi.h>
#if !defined(__MINGW32__)
-#pragma comment(lib, "IPHLPAPI.lib")
+#pragma comment(lib, "iphlpapi.lib")
#endif
#endif
#include <netinet/sctp_os_userspace.h>
