Dependencies on C library memset() etc., so include <string.h>.

src/netif/ppp/ipcp.c

@@ -49,6 +49,8 @@
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
+#include <string.h>
+
 #include "ppp.h"
 #if PPP_SUPPORT > 0
 #include "auth.h"

src/netif/ppp/lcp.c

@@ -49,6 +49,9 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
+ 
+#include <string.h>
+ 
 #include "ppp.h"
 #if PPP_SUPPORT > 0
 #include "fsm.h"

src/netif/ppp/ppp.c

@@ -78,6 +78,9 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
+ 
+#include <string.h>
+ 
 #include "ppp.h"
 #if PPP_SUPPORT > 0
 #include "randm.h"

src/netif/ppp/vj.c

@@ -28,11 +28,12 @@
  * for a 16 bit processor.
  */
 
+#include <string.h>
+
 #include "ppp.h"
 #include "vj.h"
 #include "pppdebug.h"
 
-
 #if VJ_SUPPORT > 0
 
 #if LINK_STATS