Hi guys, I've just install Dev-Cpp 4.9.9.2, download boost 1.34.1 and boost-jam 3.1.16, extract the archive, build bjam, then finaly build boost (all libraries). Everything was fine. Take lots of time, lots of space.. Now I just try to compile and execute a boost example for the threads: "tennis.cpp" and I've linker Errors :'( Is there a known problem for these Dev-Cpp release or is it just a configuration problem on my computer? I'm under windows 2000 sp4 (at work...) You'll find all the info under. Thanks in advance for the help, Mat Here is the log from Dev-c++: Compiler: Default compiler Executing g++.exe... g++.exe "D:\Apps\boost_1_34_1\libs\thread\example\tennis.cpp" -o "D:\Apps\boost_1_34_1\libs\thread\example\tennis.exe" -I"D:\Apps\boost_1_3 4_1" -I"C:\Dev-Cpp\lib\gcc\mingw32\3.4.2\include" -I"C:\Dev-Cpp\include\c+ +\3.4.2\backward" -I"C:\Dev-Cpp\include\c++\3.4.2\mingw32" -I"C:\Dev-Cpp\i nclude\c++\3.4.2" -I"C:\Dev-Cpp\include" -L"C:\Dev-Cpp\lib" -L"D:\Apps\bo ost_1_34_1\stage\lib" C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x442):tennis.cpp: undefined reference to `boost::thread::thread(boost::function0<void, std::allocator<boost::function_base> > const&)' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x500):tennis.cpp: undefined reference to `boost::thread::thread(boost::function0<void, std::allocator<boost::function_base> > const&)' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x566):tennis.cpp: undefined reference to `boost::xtime_get(boost::xtime*, int)' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x57b):tennis.cpp: undefined reference to `boost::thread::sleep(boost::xtime const&)' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x7ad):tennis.cpp: undefined reference to `boost::thread::join()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x7b8):tennis.cpp: undefined reference to `boost::thread::join()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x7cd):tennis.cpp: undefined reference to `boost::thread::~thread()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x7e2):tennis.cpp: undefined reference to `boost::thread::~thread()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x80f):tennis.cpp: undefined reference to `boost::thread::~thread()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x83c):tennis.cpp: undefined reference to `boost::thread::~thread()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x8b8):tennis.cpp: undefined reference to `boost::mutex::mutex()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text+0x909):tennis.cpp: undefined reference to `boost::mutex::~mutex()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost9condition10not ify_allEv[boost::condition::notify_all()]+0x10):tennis.cpp: undefined reference to `boost::detail::condition_impl::notify_all()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost9condition4wait INS_6detail6thread11scoped_lockINS_5mutexEEEEEvRT_[void boost::condition::wait<boost::detail::thread::scoped_lock<boost::mutex>

(boost::detail::thread::scoped_lock<boost::mutex>&)]+0x68):tennis.cpp: undefined reference to `boost::lock_error::lock_error()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost9condition4wait INS_6detail6thread11scoped_lockINS_5mutexEEEEEvRT_[void boost::condition::wait<boost::detail::thread::scoped_lock<boost::mutex> (boost::detail::thread::scoped_lock<boost::mutex>&)]+0xa4):tennis.cpp: undefined reference to `boost::lock_error::~lock_error()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread1 1scoped_lockINS_5mutexEE4lockEv[boost::detail::thread::scoped_lock<boost::mu tex>::lock()]+0x5b):tennis.cpp: undefined reference to `boost::lock_error::lock_error()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread1 1scoped_lockINS_5mutexEE4lockEv[boost::detail::thread::scoped_lock<boost::mu tex>::lock()]+0x97):tennis.cpp: undefined reference to `boost::lock_error::~lock_error()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread1 1scoped_lockINS_5mutexEE6unlockEv[boost::detail::thread::scoped_lock<boost:: mutex>::unlock()]+0x5b):tennis.cpp: undefined reference to `boost::lock_error::lock_error()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread1 1scoped_lockINS_5mutexEE6unlockEv[boost::detail::thread::scoped_lock<boost:: mutex>::unlock()]+0x97):tennis.cpp: undefined reference to `boost::lock_error::~lock_error()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost9condition7do_w aitINS_5mutexEEEvRT_[void boost::condition::do_wait<boost::mutex>(boost::mutex&)]+0x10):tennis.cpp: undefined reference to `boost::detail::condition_impl::enter_wait()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost9condition7do_w aitINS_5mutexEEEvRT_[void boost::condition::do_wait<boost::mutex>(boost::mutex&)]+0x30):tennis.cpp: undefined reference to `boost::detail::condition_impl::do_wait()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread8 lock_opsINS_5mutexEE4lockERS3_[boost::detail::thread::lock_ops<boost::mutex> ::lock(boost::mutex&)]+0xd):tennis.cpp: undefined reference to `boost::mutex::do_lock()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread8 lock_opsINS_5mutexEE6unlockERS3_[boost::detail::thread::lock_ops<boost::mute x>::unlock(boost::mutex&)]+0xd):tennis.cpp: undefined reference to `boost::mutex::do_unlock()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread8 lock_opsINS_5mutexEE6unlockERS3_RPv[boost::detail::thread::lock_ops<boost::m utex>::unlock(boost::mutex&, void*&)]+0x14):tennis.cpp: undefined reference to `boost::mutex::do_unlock(void*&)' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost6detail6thread8 lock_opsINS_5mutexEE4lockERS3_RPv[boost::detail::thread::lock_ops<boost::mut ex>::lock(boost::mutex&, void*&)]+0x14):tennis.cpp: undefined reference to `boost::mutex::do_lock(void*&)' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost9conditionD1Ev[ boost::condition::~condition()]+0x46):tennis.cpp: undefined reference to `boost::detail::condition_impl::~condition_impl()' C:\DOCUME~1\MATTHI~1\LOCALS~1\Temp/ccY9aaaa.o(.text$_ZN5boost9conditionC1Ev[ boost::condition::condition()]+0x51):tennis.cpp: undefined reference to `boost::detail::condition_impl::condition_impl()'

collect2: ld returned 1 exit status

Execution terminated My g++ version: C:\Dev-Cpp\bin>g++ -v Using built-in specs. Configured with: ../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as --host=mingw32 --tar get=mingw32 --prefix=/mingw --enable-threads --disable-nls --enable-language s=c,c++,f77 ,ada,objc,java --disable-win32-registry --disable-shared --enable-sjlj-excep tions --enable-libgcj --disable-java-awt --without-x --enable-java-gc=boehm --disable-libgcj-debug --ena ble-interpreter --enable-hash-synchronization --enable-libstdcxx-debug Thread model: win32 gcc version 3.4.2 (mingw-special) C:\Dev-Cpp\bin> Thread libs in my lib folder: D:\Apps\boost_1_34_1\stage\lib>ls -lh | grep thread -rwxrwxrwx 1 Administrators ???????? 165K Mar 12 11:10 boost_thread-mgw34-mt-1_34_1.a -rwxrwxrwx 1 Administrators ???????? 332K Mar 12 11:10 boost_thread-mgw34-mt-1_34_1.dll -rwxrwxrwx 1 Administrators ???????? 418K Mar 12 11:04 boost_thread-mgw34-mt-d-1_34_1.a -rwxrwxrwx 1 Administrators ???????? 3.8M Mar 12 11:04 boost_thread-mgw34-mt-d-1_34_1.dll -rwxrwxrwx 1 Administrators ???????? 110K Mar 12 11:22 libboost_thread-mgw34-mt-1_34_1.a -rwxrwxrwx 1 Administrators ???????? 7.1M Mar 12 11:20 libboost_thread-mgw34-mt-d-1_34_1.a -rwxrwxrwx 1 Administrators ???????? 110K Mar 12 11:33 libboost_thread-mgw34-mt-s-1_34_1.a -rwxrwxrwx 1 Administrators ???????? 7.1M Mar 12 11:30 libboost_thread-mgw34-mt-sd-1_34_1.a D:\Apps\boost_1_34_1\stage\lib> Rq: if I copy these files directly in the Dev-Cpp lib folder (C:\Dev-Cpp\lib) and don't put my -L arg in the compilation command, the result is the same :'(