diff --git a/include/ucore/hash.h b/include/ucore/hash.h
index 750b446..3c185d8 100644
--- a/include/ucore/hash.h
+++ b/include/ucore/hash.h
@@ -28,6 +28,8 @@ uc_pjwhash(const char *str,size_t len);
 uint32_t
 uc_sax_hash(void *key, size_t len);
 
+unsigned long
+uc_sdbmhash(const unsigned char  *str);
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/ucore/iomux.h b/include/ucore/iomux.h
index 414ce21..efcc3a1 100644
--- a/include/ucore/iomux.h
+++ b/include/ucore/iomux.h
@@ -137,6 +137,13 @@ struct UCTimers *iomux_get_timers(struct IOMux *mux);
  * or indirectly by the UCTimers provieded in a timer callback handler.
  */
 struct IOMux *iomux_from_timers(struct UCTimers *timers);
+
+
+/** Get the clock associated with the IOMux. This is the clock used
+ * used to drive the UCTimers associated with this IOMux
+ */
+struct UCoreClock *iomux_get_clock(struct IOMux *mux);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/sdmhash.c b/src/sdmhash.c
index da7d0fb..6fde471 100644
--- a/src/sdmhash.c
+++ b/src/sdmhash.c
@@ -1,3 +1,5 @@
+#include "ucore/hash.h"
+
 unsigned long
 uc_sdbmhash(const unsigned char  *str)
 {
diff --git a/src/strlcpy.c b/src/strlcpy.c
index 6f9682a..36c3e6b 100644
--- a/src/strlcpy.c
+++ b/src/strlcpy.c
@@ -1,4 +1,5 @@
 #include <string.h>
+#include "ucore/string.h"
 
 size_t uc_strlcpy(char *restrict dst, const char *restrict src, size_t max)
 {
diff --git a/src/supervisor.c b/src/supervisor.c
index b5f41d8..783ef7a 100644
--- a/src/supervisor.c
+++ b/src/supervisor.c
@@ -8,6 +8,7 @@
 #include <errno.h>
 #include <string.h>
 #include <limits.h>
+#include "ucore/supervisor.h"
 
 
 #define CLEAN_EXIT 11