[Boost-users] Re: Need linking help for boost::filesystem

From: David Abrahams (dave_at_[hidden])
Date: 2003-12-10 17:08:31

"Ben Hutchings" <ben.hutchings_at_[hidden]> writes:

> Scott Meyers <Usenet_at_[hidden]> wrote:
>> > Try a slight variation:
>> > 
>> > cl /TP /W4 /WL /GX /GR -ID:\C++\Boost\Current simple_ls.cpp 
>> > %BOOST_FILESYSTEM_LIB%
>> 
>> Alas, that doesn't help.  I still get multiply defined symbols.
>> This is with 1.30.2.
>
> It looks like your program and the filesystem library are built
> against different versions of the C/C++ run-time library.  Under
> the control of #pragma directives, Visual C++ compiler can insert
> references into object files that tell the linker which libraries
> to link with.  In this case the linker tries to link with both
> run-time libraries and finds conflicting definitions.  Check that
> you're linking with the right build of the filesystem library.

This just one of *many* reasons to take my advice and base your
command-lines on those generated by building the tests in
lib/filesystem/test with bjam.  If the tests work, so will your
project.  I'm going to stop repeating myself now; take my advice or
leave it.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com