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...