Re: [Boost-users] Multiple defined symbols

Subject: Re: [Boost-users] Multiple defined symbols
From: David Medine (dmedine_at_[hidden])
Date: 2015-04-08 14:30:28

Along these lines, I have been having the opposite problem on Mac -- 
trying to link only with static libraries and getting the dynamic 
libraries instead. What are the magic words there? Something like

-DBOOST_NO_DYN_LINK, -DBOOST_ALL_LIB_LINK ???

I have to don't understand why it would ever be advantageous for any 
library to autolink behind the programmer's back. I'm sure there must be 
a reason, though.

On 4/8/2015 9:53 AM, Steven Watanabe wrote:
> AMDG
>
> On 04/08/2015 04:59 AM, Lloyd wrote:
>> Hi,
>>
>> I have a "dll" project which is dependent on boost libraries like thread
>> and system. When I compile my project I gen error like
>>
>> libboost_thread-vc120-mt-gd-1_57.lib(thread.obj) : error LNK2005: "public:
>> virtual __thiscall
>> boost::detail::thread_data_base::~thread_data_base(void)"
>> (??1thread_data_base_at_detail@boost@@UAE_at_XZ) already defined in
>> boost_thread-vc120-mt-gd-1_57.lib(boost_thread-vc120-mt-gd-1_57.dll)
>>
>> What I understood from this error is, my project is trying to link to both
>> dynamic and static boost libraries. I only want to link to the boost thread
>> dll.
> You need -DBOOST_ALL_DYN_LINK.
>
>> To my knowledge am not directly using any boost autolink feature.
>>
> Autolink is activated by including boost headers.
>
>> In the visual studio linking option I have mentioned only the
>> "boost_thread-vc120-mt-gd-1_57.lib". Why could it be trying to link to
>> libboost_thread-vc120-mt-gd-1_57.lib? Is there any way to find where this
>> is happening?
>>
> In Christ,
> Steven Watanabe
>
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