Fix some warnings/errors detected by nuttx/tools/testbuilds.sh

examples/nxtext/nxtext_main.c

@@ -458,9 +458,9 @@ int nxtext_main(int argc, char **argv)
 
           hwnd = nxpu_open();
 
+#ifdef CONFIG_NX_KBD
           /* Give keyboard input to the top window (which should be the pop-up) */
 
-#ifdef CONFIG_NX_KBD
           printf("nxtext_main: Send keyboard input: %s\n", g_pumsg);
           ret = nx_kbdin(g_hnx, strlen((FAR const char *)g_pumsg), g_pumsg);
           if (ret < 0)
@@ -493,7 +493,9 @@ int nxtext_main(int argc, char **argv)
 
   /* Close the pop-up window */
 
+#ifdef CONFIG_NX_KBD
 errout_with_hwnd:
+#endif
   if (popcnt >= 3)
     {
       printf("nxtext_main: Close pop-up\n");

netutils/dhcpd/dhcpd.c

@@ -278,6 +278,16 @@ static const uint8_t        g_magiccookie[4] = {99, 130, 83, 99};
 static const uint8_t        g_anyipaddr[4] = {0, 0, 0, 0};
 static struct dhcpd_state_s g_state;
 
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef CONFIG_NETUTILS_DHCPD_HOST
+/* This is an internal OS interface and should be called from this file */
+
+void arp_update(FAR uint16_t *pipaddr, FAR uint8_t *ethaddr);
+#endif
+
 /****************************************************************************
  * Private Functions
  ****************************************************************************/