[Libwebsockets] Link error: unresolved external snprintf Visual Studio 2015

Debby Mendez debby at glance.net
Thu Apr 6 14:07:30 CEST 2017


All set now.  I was able to get past this when linking into my application by building libwebsockets against the static versions of the runtime libraries.


> On Apr 5, 2017, at 9:25 AM, Debby Mendez <debby at glance.net> wrote:
> 
> I'm just getting started with libwebsockets.  So far it looks like it has everything I need (windows & freebsd support, integrates with libev) so thanks to everyone who has worked on it.
> 
> I'm getting a link error building test-server with Visual Studio 2015 (toolset v120)
> 
> 1>------ Build started: Project: test-server, Configuration: Debug Win32 ------
> 1>     Creating library C:/GlanceGit/code/screenshare/libwebsockets/build/lib/Debug/libwebsockets-test-server.lib and object C:/GlanceGit/code/screenshare/libwebsockets/build/lib/Debug/libwebsockets-test-server.exp
> 1>websockets_static.lib(ssl.obj) : error LNK2019: unresolved external symbol _snprintf referenced in function _lws_ssl_get_error_string
> 1>C:\GlanceGit\code\screenshare\libwebsockets\build\bin\Debug\libwebsockets-test-server.exe : fatal error LNK1120: 1 unresolved externals
> ========== Build: 0 succeeded, 1 failed, 3 up-to-date, 0 skipped ==========
> 
> Did I miss something in my build process or is a change needed to support VS 2015?
> 
> I wonder if this has to do with a change to inline the printf functions in VS 2015:
> http://stackoverflow.com/questions/32418766/c-unresolved-external-symbol-sprintf-and-sscanf-in-visual-studio-2015 <http://stackoverflow.com/questions/32418766/c-unresolved-external-symbol-sprintf-and-sscanf-in-visual-studio-2015>
> 
> Thanks very much, 
> Debby

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