Imran,

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.....mingw32\bin\ld.exe: cannot find -lboost_thread

OK, I see two problems here. First, are you calling ld.exe directly to link your executable, or are you calling either gcc or g++? I initially made the mistake of calling ld.exe directly, but found the linker couldn't even find the C++ functions in std namespace. I was told to use gcc or g++ because they know to automatically include the standard runtime libraries. Second, -lboost_thread would work only if you have a -L<directory> where <directory> is where the Boost libraries are AND the Boost library file was named "libboost_thread.dll" or "libboost_thread.lib". That is, the -l option only takes care of the "lib" prefix and the ".dll" or ".lib" file extension, depending on whether you are linking to shared or static libraries. When Boost builds its libraries, it add a suffix to the library name that records the major build options (which compiler, static? debug? multi-thread? etc.). So, I'm betting that in your Boost library directory you do NOT have a file named libboost_thread.dll or libboost_thread.lib. You need to include that filename suffix (and I'm talking about the filename and not the file extension) in the argument to the -l option. What is the full filename of the boost_thread library in the Boost libs directory? Merrill