Re: [Boost-users] NEWBIE: Undefined references: How do I find the library that resolves an undefined reference - Expanded with log example and hope for a general solution

Subject: Re: [Boost-users] NEWBIE: Undefined references: How do I find the library that resolves an undefined reference - Expanded with log example and hope for a general solution
From: JENNINGS, LYNN M NH-03 USAF AFMC 517 SMXS/MXDPB (lynn.jennings_at_[hidden])
Date: 2017-01-25 12:45:49

Thanks Richard and Andy for the timely response!  Andy's answers provides the perfect example of my dilemma.  When Andy said to check the MSDN documentation for ms742213, I quickly found that I needed the Ws2_32.lib library, which I was able to solve my issue.  However, I also have the following:

1.  boost::log::add_log_file(...) with a sinks::file::rotation_at_time_point(...) 
2.  boost::random::random_device range; 

I made a guess with the log and added boost_log_setup_mgw48-mt-d-1_61 and boost_log_ mgw48-mt-d-1_61, but these libraries didn't resolve my issue.  When I check the boost documentation (I realize that many of the boost additions just require header files, which the examples are careful to specify.  I figure this must require a library because I am getting an undefined error.), there were many mentions of a library, but I couldn't find where the name of the library was specified!

So I hope there is a general way to determine the name of the boost library so I do not need to keeping asking about particular undefined errors.  In the past, I have been able to google the undefined error and find the library reference, but 

Thanks again for all of your help!

-----Original Message-----
On 1/24/2017 3:44 PM, Richard Hodges wrote: 
> That would be the winsock library. 
> 
> https://msdn.microsoft.com/en-us/library/ms740673.aspx 
> 
> 
> 
> On 24 January 2017 at 20:33, JENNINGS, LYNN M NH-03 USAF AFMC 517 
> SMXS/MXDPB <lynn.jennings_at_[hidden]> wrote: 
> 
>> NEWBIE question: Undefined references: How do I find the library that 
>> resolves an undefined reference. For example, the output for the gcc 
>> linker running in MinGW shows: 
>> 
>> C:/boost/boost/asio/detail/impl/winsock_init.ipp:39: Undefined reference 
>> to `WSAStartup_at_8' 
>> 
>> I have googled the documentation a number of ways, but I cannot find the 
>> library that will resolve this error. I am sure that this is a common 
>> problem. Please point me to the documentation so I can fix this and the 
>> undefined references. 
>> 
>> Thanks! 

In the future, you can check Microsoft's documentation [1] for info on 
 their functions. I searched for "WSAStartup", and found [2]. At the 
 bottom of that page is a "Requirements" box, which tells you the library 
 it's in. 
Andy 
1. http://msdn.microsoft.com 
 2. 
https://msdn.microsoft.com/en-us/library/windows/desktop/ms742213(v=vs.85).aspx