[lwip-users] [lwip] How to compile in djgpp?

[杨晔]

   Hi Everybody, I downloaded the djgpp port version and tried to compile it . 
But I got the following errors:

./lwip/proj/djgpp/liblwip4.a(tcp.o): In function `tcp_close':
tcp.c:109: undefined reference to `tcp_send_ctrl'
tcp.c:115: undefined reference to `tcp_send_ctrl'
tcp.c:128: undefined reference to `tcp_output'
./lwip/proj/djgpp/liblwip4.a(tcp.o): In function `tcp_abort':
tcp.c:176: undefined reference to `tcp_rst'
./lwip/proj/djgpp/liblwip4.a(tcp.o): In function `tcp_recved':
tcp.c:261: undefined reference to `tcp_send_ctrl'
./lwip/proj/djgpp/liblwip4.a(tcp.o): In function `tcp_connect':
tcp.c:346: undefined reference to `tcp_enqueue'
tcp.c:348: undefined reference to `tcp_output'