working on RX, broke FreeRTOS

CMakeLists.txt

@@ -47,6 +47,7 @@ add_executable(${TARGET_NAME})
 set (LWIP_INCLUDE_DIRS
     "${LWIP_DIR}/src/include"
     "bsp_z7/lwip/include"
+    ${LWIP_DIR}/contrib/ports/freertos/include
 )
 include(${LWIP_DIR}/src/Filelists.cmake)
 set(lwip_SRCS
@@ -54,6 +55,8 @@ set(lwip_SRCS
     ${lwipcore4_SRCS}
     ${lwipcore6_SRCS}
     ${lwipnetif_SRCS}
+    ${lwipapi_SRCS}
+    ${LWIP_DIR}/contrib/ports/freertos/sys_arch.c
     #${LWIP_DIR}/src/netif/slipif.c
     #${LWIP_DIR}/src/apps/tftp/tftp.c
 )