diff --git a/target/h/bLib.h b/target/h/bLib.h
index d215c81..1190452 100644
--- a/target/h/bLib.h
+++ b/target/h/bLib.h
@@ -20,7 +20,7 @@
 extern "C" {
 #endif
 
-int  bcmp(char *buf1, char *buf2, size_t nbytes);
+int  bcmp(const void *buf1, const void *buf2, size_t nbytes);
 void binvert(char *buf, size_t nbytes);
 void bswap(char *buf1, char *buf2, size_t nbytes);
 void swab(char *source, char *destination, size_t nbytes);
diff --git a/target/src/bLib.c b/target/src/bLib.c
index 27e9099..7129a21 100644
--- a/target/src/bLib.c
+++ b/target/src/bLib.c
@@ -16,10 +16,10 @@
 /*
  * bcmp - compare one buffer to another
  */
-int bcmp (char *buf1, char *buf2, size_t nbytes)
+int bcmp (const void *buf1, const void *buf2, size_t nbytes)
 {
-    unsigned char *p1;
-    unsigned char *p2;
+    const unsigned char *p1;
+    const unsigned char *p2;
 
     if (nbytes == 0) {
         return  (0);
diff --git a/target/src/taskLib.c b/target/src/taskLib.c
index ab74991..2ddef54 100644
--- a/target/src/taskLib.c
+++ b/target/src/taskLib.c
@@ -96,7 +96,7 @@ void  vxWorksTaskInit (void)
 
     API_ThreadGetName(task, vxTcb[tid].name);
 
-    if (API_ThreadCleanupPush(taskClrTcb, (PVOID)tid)) {
+    if (API_ThreadCleanupPush(taskClrTcb, (PVOID)(ULONG)tid)) {
         fprintf(stderr, "vxWorks task cleanup push error: %s\n", strerror(errno));
     }
 }
@@ -162,7 +162,7 @@ LW_LIB_HOOK_STATIC void *taskWrapper (WIND_TCB *pTcb)
     vxRestart[tid] = LW_FALSE;
 
     if (pTcb->entry) {
-        return  ((void *)pTcb->entry(pTcb->arg[0], pTcb->arg[1], pTcb->arg[2],
+        return  ((void *)(ULONG)pTcb->entry(pTcb->arg[0], pTcb->arg[1], pTcb->arg[2],
                          pTcb->arg[3], pTcb->arg[4], pTcb->arg[5], pTcb->arg[6],
                          pTcb->arg[7], pTcb->arg[8], pTcb->arg[9]));
     } else {
@@ -234,7 +234,7 @@ STATUS  taskInit (WIND_TCB *pTcb, char *name, int priority,
     }
 
     pTcb->id = HANDLE_TO_TID(pTcb->task);
-    if (API_ThreadCleanupPushEx(pTcb->task, taskClrTcb, (PVOID)pTcb->id)) {
+    if (API_ThreadCleanupPushEx(pTcb->task, taskClrTcb, (PVOID)(ULONG)pTcb->id)) {
         API_ThreadDelete(&pTcb->task, LW_NULL);
         API_EventSetDelete(&pTcb->event);
         return  (ERROR);
diff --git a/target/src/wdLib.c b/target/src/wdLib.c
index fc5b5dd..8cc351f 100644
--- a/target/src/wdLib.c
+++ b/target/src/wdLib.c
@@ -83,7 +83,7 @@ STATUS  wdStart (WDOG_ID wdId, int delay, FUNCPTR pRoutine,
     ULONG  ulError;
 
     ulError = API_TimerStart(wdId, vx2syWdTo(delay), LW_OPTION_MANUAL_RESTART,
-                            (PTIMER_CALLBACK_ROUTINE)pRoutine, (PVOID)parameter);
+                            (PTIMER_CALLBACK_ROUTINE)pRoutine, (PVOID)(ULONG)parameter);
     if (ulError) {
         return  (ERROR);
     } else {