fix lwip-v1.4 compilation (#5935)

d-a-v · web-flow · commit c1e439d447f2 · 2019-03-31T23:04:42.000+02:00
diff --git a/tools/sdk/lwip/include/arch/cc.h b/tools/sdk/lwip/include/arch/cc.h
@@ -39,6 +39,7 @@
 #include "ets_sys.h"
 #include "osapi.h"
 #define EFAULT 14
+#include <sys/pgmspace.h>
 
 //#define LWIP_PROVIDE_ERRNO
 
