Fixed compilation with LWIP_UDP/LWIP_TCP disabled

apps/httpserver_raw/httpd.c

@@ -87,6 +87,8 @@
 #include <string.h>
 #include <stdlib.h>
 
+#if LWIP_TCP
+
 #ifndef HTTPD_DEBUG
 #define HTTPD_DEBUG         LWIP_DBG_OFF
 #endif
@@ -1989,3 +1991,5 @@ http_set_cgi_handlers(const tCGI *cgis, int num_handlers)
   g_iNumCGIs = num_handlers;
 }
 #endif /* LWIP_HTTPD_CGI */
+
+#endif /* LWIP_TCP */

apps/sntp/sntp.c

@@ -39,10 +39,14 @@
 #include "lwip/timers.h"
 #include "lwip/udp.h"
 #include "lwip/dns.h"
+#include "lwip/ip_addr.h"
+#include "lwip/pbuf.h"
 
 #include <string.h>
 #include <time.h>
 
+#if LWIP_UDP
+
 /** This is simple "SNTP" client for socket or raw API.
  * It is a minimal implementation of SNTPv4 as specified in RFC 4330.
  * 
@@ -694,3 +698,5 @@ sntp_init(void)
 }
 
 #endif /* SNTP_SOCKET */
+
+#endif /* LWIP_UDP */

apps/tcpecho_raw/echo.c

@@ -45,6 +45,8 @@
 #include "lwip/stats.h"
 #include "lwip/tcp.h"
 
+#if LWIP_TCP
+
 static struct tcp_pcb *echo_pcb;
 
 enum echo_states
@@ -354,3 +356,5 @@ echo_close(struct tcp_pcb *tpcb, struct echo_state *es)
   }  
   tcp_close(tpcb);
 }
+
+#endif /* LWIP_TCP */