Create MG_ARCH_FREERTOS, MG_ENABLE_LWIP, MG_ENABLE_FREERTOS_TCP. Remove MG_ARCH_FREERTOS_TCP, MG_ARCH_RTX_LWIP

src/net_lwip.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#if defined(MG_ENABLE_LWIP) && MG_ENABLE_LWIP
+#if defined(__GNUC__)
+#include <sys/stat.h>
+#include <sys/time.h>
+#else
+struct timeval {
+  time_t tv_sec;
+  long tv_usec;
+};
+#endif
+
+#include <lwip/sockets.h>
+
+#if LWIP_SOCKET != 1
+// Sockets support disabled in LWIP by default
+#error Set LWIP_SOCKET variable to 1 (in lwipopts.h)
+#endif
+#endif