Re: [Boost-users] [test] Fatal link error LNK1561: entry point must be defined when using boost.test -- Solved

From: Tjernstrom, Staffan (stjernstrom_at_[hidden])
Date: 2008-07-21 23:25:07

Thank you very much indeed.

The missing /SUBSYSTEM: was indeed my problem.

This came about because I created the unit test projects as empty projects in VS, not MFC console projects.  

Rgds 

Staffan Tj. 

Staffan Tjernström | Sr. Software Engineer - Market Data Systems | www.esignal.com
eSignal, Interactive Data Desktop Solutions (NYSE: IDC)
3955 Point Eden Way | Hayward, CA 94545-3720 | 510.723.1723 | FAX: [phone]

-----Original Message-----
From: boost-users-bounces_at_[hidden] [mailto:boost-users-bounces_at_[hidden]] On Behalf Of John C. Femiani
Sent: Sunday, 20 July, 2008 15:27
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] [test] Fatal link error LNK1561: entry point must be defined when using boost.test

Ovanes Markarian wrote:
>
> The problem here is that you set to link against dynamic version of
> C++ runtime and you want boost to link against static version of boost
> lib. This will not work.
>
> Please select either another compilation switch (Project Properties /
> C++ / Code Generation) and choose there non-DLL version of runtime,
> like Multi-Threaded Library and not as currently Multi-Threaded 
> Library DLL. This should change your compiler switch from /MD to /MT.
I dont think that is the problem because he is linking with libboost_unit_test_framework-vc80-mt-1_35.lib, and since there is no '-s' in the name, it links with MSVCRT, and it is selected by boost autolink when you use option /MD and and you are not compiling DEBUG code.

Plus, it works flawlessly on my system.

I _did_ notice a difference between our liker options; You don't have the subsystem set. When I throw together an msvc project I get this linker option:

/SUBSYTEM:CONSOLE

If I remove that option, I get:

1>LINK : fatal error LNK1561: entry point must be defined

Personally, I never even paid attention to it before (the defaults always worked for me), but I guess that is probably your problem.

open your project properties, and change Linker->System->SubSystem from [Not Set] to '/SUBSYSTEM:CONSOLE', or just manually add it to the command line and see if that works.

--John

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