You may want to try running the dependency checker on the dll. Perhaps you have different versions of libraries being loaded. If you have MSVC, just run depends.exe. Otherwise, you can download this useful tool from the author at http://www.dependencywalker.com/. We too have built boost threads dll on Windows 2000 and successfully used it on Windows XP. Jason Stewart Ragnar Ouchterlony wrote:

I have tried compiled boost::thread for windows using visual c++ from the visual studio .net 2003 suite. It compiles fine and I can compile things with the created libraries. However, when I move my program and the boost::thread dll:s from windows 2000 to another machine running windows XP, the program just prints out a blank line and exits without any other message. Attached is a program I have used to test out that it is this that is wrong. What have I done wrong? Is it impossible to compile the boost libraries on windows 2000 and then expect the created dll:s to work on windows XP? If this is the case, where can I get hold of the boost::thread libraries for vc71 compiled specifically for windows XP? If not, what could be wrong? /Ragnar Ouchterlony

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#pragma warning(disable:4275)

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

#include <fstream> #include <string> #include <iostream>

using namespace std;

class Writer { public: Writer(const string& f) : wfile(f) {}

void operator()() { this->file.open(wfile.c_str(), ios_base::trunc); this->file << "A nice little string." << endl; this->file.close(); }

private: string wfile; ofstream file; };

int main(int argc, char* argv) { Writer* wrtr;

cout << "testning, testning" << endl;

wrtr = new Writer("test.txt");

cout << "Writer created" << endl;

// Ccomment out either the first or second variant.

// First variant, using a boost thread. Doesn't work boost::thread thrd(boost::ref(*wrtr)); cout << "Thread started" << endl; thrd.join(); cout << "Threads joined" << endl;

// Second variant, without boost. Works (*wrtr)(); cout << "Writer has been run" << endl;

delete wrtr;

cout << "Writer deleted" << endl;

return 0; }

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I have tried compiled boost::thread for windows using visual c++ from the visual studio .net 2003 suite. It compiles fine and I can compile things with the created libraries. However, when I move my program and the boost::thread dll:s from windows 2000 to another machine running windows XP, the program just prints out a blank line and exits without any other message.

Attached is a program I have used to test out that it is this that is wrong. What have I done wrong? Is it impossible to compile the boost libraries on windows 2000 and then expect the created dll:s to work on windows XP? If this is the case, where can I get hold of the boost::thread libraries for vc71 compiled specifically for windows XP? If not, what could be wrong?

It certainly should work, I built Boost.Thread on WinXP home, using Boost-1.31.0, and then built your test program with : cl -GX -I../../release/boost /O2 /MD *.cpp And everything ran OK for me here. John.