[lwip-users] [lwip] Linking Error

[byung-hyun jang]

Hello, lwip members:

I am trying to test the HTTP/1.0 server code example provided by Adams in 
his manual(it is located at the very end of the paper) using lwip win32 
version provided by Florian. At this time there was no compile error but 
many linking error came out. I guess this is because I don't know how to use 
library or something.... Error message under visual C++ 6.0 is like 
followings.

=========================
--------------------Configuration: test - Win32 Debug--------------------
Linking...
lwip4.lib(tcp_output.obj) : error LNK2001: unresolved external symbol _bcopy
lwip4.lib(icmp.obj) : error LNK2001: unresolved external symbol _bcopy
memp.obj : error LNK2001: unresolved external symbol _bcopy
pktif.obj : error LNK2001: unresolved external symbol _bcopy
lwip4.lib(tcp.obj) : error LNK2001: unresolved external symbol _bcopy
lwip4.lib(mem.obj) : error LNK2001: unresolved external symbol _bcopy
httpTest.obj : error LNK2001: unresolved external symbol "signed char 
__cdecl netconn_delete(struct netconn *)" 
(?netconn_delete@@YACPAUnetconn@@@Z)
httpTest.obj : error LNK2001: unresolved external symbol "struct netconn * 
__cdecl netconn_accept(struct netconn *)" 
(?netconn_accept@@YAPAUnetconn@@PAU1@@Z)
httpTest.obj : error LNK2001: unresolved external symbol "signed char 
__cdecl netconn_listen(struct netconn *)" 
(?netconn_listen@@YACPAUnetconn@@@Z)
httpTest.obj : error LNK2001: unresolved external symbol "signed char 
__cdecl netconn_bind(struct netconn *,struct ip_addr *,unsigned short)" 
(?netconn_bind@@YACPAUnetconn@@PAUip_addr@@address@hidden)
httpTest.obj : error LNK2001: unresolved external symbol "struct netconn * 
__cdecl netconn_new(enum netconn_type)" 
(?netconn_new@@YAPAUnetconn@@W4netconn_type@@@Z)
httpTest.obj : error LNK2001: unresolved external symbol "signed char 
__cdecl netconn_close(struct netconn *)" (?netconn_close@@YACPAUnetconn@@@Z)
httpTest.obj : error LNK2001: unresolved external symbol "signed char 
__cdecl netconn_write(struct netconn *,void *,unsigned short,unsigned char)" 
(?netconn_write@@YACPAUnetconn@@address@hidden)
httpTest.obj : error LNK2001: unresolved external symbol "signed char 
__cdecl netbuf_data(struct netbuf *,void * *,unsigned short *)" 
(?netbuf_data@@YACPAUnetbuf@@address@hidden)
httpTest.obj : error LNK2001: unresolved external symbol "struct netbuf * 
__cdecl netconn_recv(struct netconn *)" 
(?netconn_recv@@YAPAUnetbuf@@PAUnetconn@@@Z)
lwip4.lib(tcp.obj) : error LNK2001: unresolved external symbol _bzero
lwip4.lib(mem.obj) : error LNK2001: unresolved external symbol _bzero
lwip4.lib(stats.obj) : error LNK2001: unresolved external symbol _bzero
lwip4.lib(udp.obj) : error LNK2001: unresolved external symbol _bzero
test___Win32_Debug/test.exe : fatal error LNK1120: 11 unresolved externals
Error executing link.exe.

=======================================

Anyone who know what the problem is and how I cam fix it??
It would be great help for me and other beginners.

Thanks, Sincerely,
Byung-hyun Jang

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