Further to this, I have noticed that the linking error only happens when I use:

boost::wregex expr(L"[\\s]");

instead of:

boost::regex expr("[\\s]");

so now why can’t I use the wide regex type in the static library?

From: Martin Zeng
Sent: Monday, 7 May 2007 2:14 PM
To: 'boost-users@lists.boost.org'
Subject: Having trouble including my static library (which uses regex) in my MFC app

Hi guys,

I have a static library in which I have included the boost regex header. This static library compiles fine with no errors.

But then I want to use this static library in an MFC application I made.

I keep getting the following linking error:

error LNK2005: "public: static unsigned int __cdecl std::char_traits<unsigned short>::length(unsigned short const *)" (?length@?$char_traits@G@std@@SAIPBG@Z) already defined in msvcprtd.lib(MSVCP71D.dll)

What is the problem and how can I solve it?

Thanks

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