Bruno, The symbols it's looking for are should be in your implementation's C++ runtime library. Typically the kind of error you cite is caused by using gcc instead of g++ to do the linking step, though I'm a bit surprised not to see similar errors reported about iostream support. The only other thought I have is that maybe codeblocks is actually using a different compiler than the one you used to build Boost.Threads. At Thu, 13 Jan 2011 23:18:10 -0200, Bruno Ferraz do Amaral wrote:

Hello Simon,

thanks for the answer and suggestion.

My IDE is CodeBlocks, and I'm running it over Windows Vista 32.

My code is a simple example of the thread lib use:

Code:

#include <boost/thread/thread.hpp> #include <iostream>

using namespace std;

void hello_world() { cout << "Hello world, I'm a thread!" << endl; }

int main(int argc, char* argv[]) { // inicialize a new thread boost::thread my_thread( &hello_world ); // wait for the thread end my_thread.join();

return 0; }

It's very simple, and when I try to compile it, I got these errors:

C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0x7d)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0x66f)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0x771)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0xdbe)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0xe53)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| ||=== Build finished: 6 errors, 0 warnings ===|

CodeBlocks uses MinGW as compiler, and due this is a C++ code, the g++ is been used (I guess).

note: I've built the boost using MinGW, not msvc.

2011/1/13 Simon Mpasi <smpasi@dracorp.com>

...

Hello Bruno,

I have used boost libraries and they work for me on Windows. To better understand your question,

You may want to tell which environment you r are using, i.e. VC9, Windows XP, …, and including a copy of the code that is failing may help also.

Cheers,

Simon

*From:* boost-users-bounces@lists.boost.org [mailto: boost-users-bounces@lists.boost.org] *On Behalf Of *Bruno Ferraz do Amaral *Sent:* Wednesday, January 12, 2011 9:11 PM *To:* boost-users@lists.boost.org *Subject:* [Boost-users] Error '__Unwind_Resume' when trying to link codeblocks to boost::thread

Hi,

I'm a new user of Boost Libraries, and I'd use multithreading linking the boost::thread class into my projetct.

I'm using Code::Blocks, and I've built the Boost in Windows, and then I followed a wiki guide to link the libraries of the Boost.Thread with my Project in CodeBlocks.

However I found this reference errors:

C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0x7d)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0x66f)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0x771)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0xdbe)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.text+0xe53)||undefined reference to `__Unwind_Resume'| C:\boost_1_45_0\stage\lib\libboost_thread-mgw45-mt-1_45.a(thread.o):thread.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| ||=== Build finished: 6 errors, 0 warnings ===|

What I have to do? I tried a lot of tutorials and guides in Google, but no one works...

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

-- ================================ Bruno Ferraz do Amaral Ciências da Computação - ICMC Universidade de São Paulo - USP São Carlos =================================

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

-- Dave Abrahams BoostPro Computing http://www.boostpro.com

Thanks to all you guys! I downloaded the new release of Code::Blocks with MinGW, and built the boost with this version of MinGW. Now everything is working fine! Thanks very much! 2011/1/14 Nathan Ridge <zeratul976@hotmail.com>

...

Date: Thu, 13 Jan 2011 21:07:51 -0500 From: dave@boostpro.com To: boost-users@lists.boost.org Subject: Re: [Boost-users] Error '__Unwind_Resume' when trying to link codeblocks to boost::thread

Bruno,

The symbols it's looking for are should be in your implementation's C++ runtime library. Typically the kind of error you cite is caused by using gcc instead of g++ to do the linking step, though I'm a bit surprised not to see similar errors reported about iostream support. The only other thought I have is that maybe codeblocks is actually using a different compiler than the one you used to build Boost.Threads.

Yeah, these look like errors I've gotten in the past when I tried to link boost libraries built with one version of gcc with my code built with another version of gcc.

Regards, Nate. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

-- ================================ Bruno Ferraz do Amaral Ciências da Computação - ICMC Universidade de São Paulo - USP São Carlos =================================