Index: include/nfsc/libnfs.h
--- include/nfsc/libnfs.h.orig
+++ include/nfsc/libnfs.h
@@ -38,6 +38,9 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+#if defined(__OpenBSD__)
+#include <sys/time.h> /* gettimeofday */
+#endif
 
 #define LIBNFS_FEATURE_READAHEAD
 #define LIBNFS_FEATURE_PAGECACHE