undefined reference to `espconn_send'

[stayliv3]

compile with the latest rtos SDK

error message

LD
release/udp_client/udp_client.o:(.text.UdpRecvCb+0x10): undefined reference to espconn_send' release/udp_client/udp_client.o: In functionUdpRecvCb':
/media/sf_security/iot/esp8266/firmware/udpdemo/udp_client/udp_client.c:304: undefined reference to espconn_send' release/udp_client/udp_client.o: In functiont1Callback':
/media/sf_security/iot/esp8266/firmware/udpdemo/udp_client/udp_client.c:304: undefined reference to espconn_send' release/udp_client/udp_client.o:(.text.udpClient+0x30): undefined reference toespconn_regist_recvcb'
release/udp_client/udp_client.o:(.text.udpClient+0x34): undefined reference to espconn_regist_sentcb' release/udp_client/udp_client.o:(.text.udpClient+0x38): undefined reference toespconn_create'
release/udp_client/udp_client.o: In function udpClient': /media/sf_security/iot/esp8266/firmware/udpdemo/udp_client/udp_client.c:330: undefined reference toespconn_regist_recvcb'
/media/sf_security/iot/esp8266/firmware/udpdemo/udp_client/udp_client.c:330: undefined reference to espconn_regist_sentcb' /media/sf_security/iot/esp8266/firmware/udpdemo/udp_client/udp_client.c:332: undefined reference toespconn_create'
collect2: error: ld returned 1 exit status
Makefile:50: recipe for target 'eagle.app.v6.1.out' failed
make: *** [eagle.app.v6.1.out] Error 1

[FayeY]

How about now? https://github.com/espressif/ESP8266_RTOS_SDK