Re: [Boost-users] Error Linking A Simple Application using Boost.Any

From: Caleb Epstein (caleb.epstein_at_[hidden])
Date: 2005-06-08 17:08:32

On 6/7/05, Dinesh Pillay <dpillay_at_[hidden]> wrote:

> >g++ -IC:\Boost\include\boost-1_32 -pedantic -s -O3 -fno-exceptions -c
> boost_trial.cpp -o boost_trial.o
> 
> But when I try to link the file using:
> g++ -IC:\Boost\include\boost-1_32 boost_trial.cpp -o boost_trial.exe
> 
> I get the following errors:
> 
> /mingw/lib/libstdc++.a(eh_personality.o)(.data$_ZTISt9exception[typeinfo
> for std::exception]+0x0): multiple definition of `typeinfo for
> std::exception'
> C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTISt9exception[typeinfo
> for std::exception]+0x0):boost_trial.cpp: first defined here
> /mingw/lib/libstdc++.a(eh_personality.o)(.text$_ZTSSt9exception[typeinfo
> name for std::exception]+0x0): multiple definition of `typeinfo name
> for std::exception'
> C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTSSt9exception[typeinfo
> name for std::exception]+0x0):boost_trial.cpp: first defined here
> /mingw/lib/libstdc++.a(functexcept.o)(.data$_ZTISt8bad_cast[typeinfo
> for std::bad_cast]+0x0): multiple definition of `typeinfo for
> std::bad_cast'
> C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTISt8bad_cast[typeinfo
> for std::bad_cast]+0x0):boost_trial.cpp: first defined here
> /mingw/lib/libstdc++.a(functexcept.o)(.text$_ZTSSt8bad_cast[typeinfo
> name for std::bad_cast]+0x0): multiple definition of `typeinfo name
> for std::bad_cast'
> C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTSSt8bad_cast[typeinfo
> name for std::bad_cast]+0x0):boost_trial.cpp: first defined here
> collect2: ld returned 1 exit status
> 
> I have no idea why this is happening! What am I doing wrong? Somebody
> please tell me the right way to link the file.
> 

I suspect the problem is you have disabled exceptions
(-fno-exceptions).  Are you doing this for any particular reason? 
Also, why are you stripping your object files (-s in the compile
line)?  Hopefully gcc is ignoring this, but this may also be the cause
of your grief.

g++ -Ic:/boost/include/boost-1_32 -O3 -c boost_trial.cpp
g++ -s -o boost_trial.exe boost_trial.o

-- 
Caleb Epstein
caleb dot epstein at gmail dot com