First stab

src/http.c

@@ -1,6 +1,6 @@
+#include "http.h"
 #include "arch.h"
 #include "base64.h"
-#include "http.h"
 #include "log.h"
 #include "net.h"
 #include "private.h"
@@ -561,7 +561,7 @@ void mg_http_serve_file(struct mg_connection *c, struct mg_http_message *hm,
 }
 
 #if MG_ARCH == MG_ARCH_ESP32 || MG_ARCH == MG_ARCH_ESP8266 || \
-    MG_ARCH == MG_ARCH_FREERTOS
+    MG_ARCH == MG_ARCH_FREERTOS_TCP
 char *realpath(const char *src, char *dst) {
   int len = strlen(src);
   if (len > MG_PATH_MAX - 1) len = MG_PATH_MAX - 1;
@@ -575,7 +575,7 @@ char *realpath(const char *src, char *dst) {
 // Allow user to override this function
 bool mg_is_dir(const char *path) WEAK;
 bool mg_is_dir(const char *path) {
-#if MG_ARCH == MG_ARCH_FREERTOS
+#if MG_ARCH == MG_ARCH_FREERTOS_TCP && defined(MG_ENABLE_FF)
   struct FF_STAT st;
   return (ff_stat(path, &st) == 0) && (st.st_mode & FF_IFDIR);
 #else