IDF release/v3.3 (#3672)

ESP-IDF release/v3.3: 66d3783c8
esp-face: 420fc7e
esp32-camera: 0107093

tools/sdk/include/lwip/netif/ppp/ipcp.h

@@ -76,7 +76,7 @@
 
 #define IPCP_VJ_COMP 0x002d	/* current value for VJ compression option*/
 #define IPCP_VJ_COMP_OLD 0x0037	/* "old" (i.e, broken) value for VJ */
-				/* compression option*/
+				/* compression option*/ 
 #endif /* VJ_SUPPORT */
 
 typedef struct ipcp_options {

tools/sdk/include/lwip/netif/ppp/ipv6cp.h

@@ -73,7 +73,7 @@
     between BULL S.A. and INRIA).
 
     This software is available with usual "research" terms
-    with the aim of retain credits of the software.
+    with the aim of retain credits of the software. 
     Permission to use, copy, modify and distribute this software for any
     purpose and without fee is hereby granted, provided that the above
     copyright notice and this permission notice appear in all copies,

tools/sdk/include/lwip/netif/ppp/ppp.h

@@ -47,6 +47,10 @@
 #include "lwip/ip6_addr.h"
 #endif /* PPP_IPV6_SUPPORT */
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* Disable non-working or rarely used PPP feature, so rarely that we don't want to bloat ppp_opts.h with them */
 #ifndef PPP_OPTIONS
 #define PPP_OPTIONS         0
@@ -685,6 +689,10 @@ err_t ppp_ioctl(ppp_pcb *pcb, u8_t cmd, void *arg);
 #define ppp_set_netif_linkcallback(ppp, link_cb)           \
         netif_set_link_callback(ppp->netif, link_cb);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* PPP_H */
 
 #endif /* PPP_SUPPORT */

tools/sdk/include/lwip/netif/ppp/pppos.h

@@ -42,6 +42,10 @@
 #include "ppp.h"
 #include "vj.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* PPP packet parser states.  Current state indicates operation yet to be
  * completed. */
 enum {
@@ -114,5 +118,9 @@ void pppos_input(ppp_pcb *ppp, u8_t* data, int len);
 err_t pppos_input_sys(struct pbuf *p, struct netif *inp);
 #endif /* !NO_SYS && !PPP_INPROC_IRQ_SAFE */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* PPPOS_H */
 #endif /* PPP_SUPPORT && PPPOL2TP_SUPPORT */