nng: Link Errors with VS2017 (I think it is something simple)

I am trying to build a nanomsg next gen (https://github.com/nanomsg/nng) on a windows box. I am using VS2017 (windows 10) The CMAKE worked like a charm.

I am getting link errors. I have verifed that the nng.lib file is located at:

D:\Source\LinkWareMessageBus\nng\lib

Dumbin.exe says the symbols are all in place (and there were no compile or link errors)

that the Linker/General/Additional Library Directories is: D:\Source\LinkWareMessageBus\nng\lib

The .h files are read fine. But I am getting the following link errors:

    Severity	Code	Description	Project	File	Line	Suppression State
    Error	LNK2019	unresolved external symbol __imp__nng_setopt referenced in function "int __cdecl client(char const *,char const *)" (?client@@YAHPBD0@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_listen referenced in function "int __cdecl server(char const *)" (?server@@YAHPBD@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_dial referenced in function "int __cdecl client(char const *,char const *)" (?client@@YAHPBD0@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_strerror referenced in function "void __cdecl fatal(char const *,int)" (?fatal@@YAXPBDH@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_send referenced in function "int __cdecl server(char const *)" (?server@@YAHPBD@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_recv referenced in function "int __cdecl client(char const *,char const *)" (?client@@YAHPBD0@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_free referenced in function "int __cdecl client(char const *,char const *)" (?client@@YAHPBD0@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_pub0_open referenced in function "int __cdecl server(char const *)" (?server@@YAHPBD@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1	
    Error	LNK2019	unresolved external symbol __imp__nng_sub0_open referenced in function "int __cdecl client(char const *,char const *)" (?client@@YAHPBD0@Z)	LinkWareMessageBus	D:\Source\LinkWareMessageBus\LinkWareMessageBus.obj	1

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 20 (8 by maintainers)

Most upvoted comments

I no longer say this is simple. But I did get further, and maybe you can help get over the finish line. Even though I was telling VS2017 where to find the nng.lib (the path and the name). I tried also putting it in with the kernel32.lib user32.lib and the other mandatory libs.

OK. I am now no longer getting the errors about the nng_xxxx symbols. Rather it is now complaining about symbols that nng.lib is looking for.

See below:

Severity	Code	Description	Project	File	Line	Suppression State
Error	LNK2019	unresolved external symbol __imp_WSARecvFrom referenced in function nni_win_udp_sysfini	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_WSACleanup referenced in function nni_plat_fini	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_thread.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_WSACleanup	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_WSACleanup	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_bind referenced in function nni_win_tcp_sysfini	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_bind	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_bind	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_closesocket referenced in function nni_plat_tcp_ep_init	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_closesocket	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_closesocket	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_getsockname referenced in function nni_win_tcp_sysfini	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_getsockname	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_getsockname	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_listen referenced in function nni_win_tcp_listen	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_listen	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_setsockopt referenced in function nni_plat_tcp_pipe_set_nodelay	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_setsockopt	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_setsockopt	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_socket referenced in function nni_plat_tcp_ep_init	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_socket	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_socket	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_WSAStartup referenced in function nni_win_tcp_sysinit	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2001	unresolved external symbol __imp_WSAStartup	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_WSAGetLastError referenced in function nni_plat_tcp_pipe_set_nodelay	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_WSAIoctl referenced in function nni_plat_tcp_ep_init	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_WSARecv referenced in function nni_win_tcp_sysfini	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_WSASend referenced in function nni_win_tcp_sysfini	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2019	unresolved external symbol inet_ntop referenced in function nni_plat_tcp_ntop	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_tcp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_WSASendTo referenced in function nni_win_udp_sysfini	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_udp.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_htons referenced in function resolv_ip	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_resolv.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_getaddrinfo referenced in function resolv_task	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_resolv.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_freeaddrinfo referenced in function resolv_task	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_resolv.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_accept referenced in function nni_plat_pipe_open	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_connect referenced in function nni_plat_pipe_open	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_ioctlsocket referenced in function nni_plat_pipe_open	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_htonl referenced in function nni_plat_pipe_open	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_recv referenced in function nni_plat_pipe_clear	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK2019	unresolved external symbol __imp_send referenced in function nni_plat_pipe_raise	LinkWareMessageBus	D:\Source\LinkWareMessageBus\nng.lib(win_pipe.c.obj)	1	
Error	LNK1120	24 unresolved externals	LinkWareMessageBus	D:\Source\LinkWareMessageBus\x64\Debug\LinkWareMessageBus.exe	1

Hi, I got a same issue like yours, can you tell me how you slove it, preciate.

NilChow on Jan 18, 2020