Re: Boost Log 1.65.1 Linking Issue

From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2020-09-15 16:14:48

On 9/15/20 5:34 PM, Karmethia Thompson via Boost wrote:
> Good morning,
> 
> I am trying to create a logger that uses Boost Log. I was successful
> getting my code to compile with 1.63.0, so I know that I am not too far off
> of the mark. cmake/make throws a linking issues whenever I attempt to
> create a sink:

[snip]

> Can someone please help? I have tried everything from trying to dynamically
> and statically link. I've added both "log" and "log_setup" to the
> find_packages in cmake and have also explicitly specified the locations of
> those libraries as well.

The error messages indicate you're missing symbols defined in libboost_log.

I think you either didn't specify the library to link with, or you might 
be affected by this bug:

https://gitlab.kitware.com/cmake/cmake/-/issues/20638
https://github.com/boostorg/log/issues/46

The solution is to use target_link_libraries to explicitly link with 
libboost_log, e.g.:

target_link_libraries(${MY_TARGET} boost_log)