Dear members, I wrote an application using boost thread. It compiled well with GCC 3.4 but not with 3.2. I'm using Boost version 1.35. When I compile the application it shows the following error messages... /usr/local/include/boost-1_35/boost/config/requires_threads.hpp:47:5: #error "Compiler threading support is not turned on. Please set the correct command line options for threading: -pthread (Linux), -pt hreads (Solaris) or -mthreads (Mingw32)" /usr/local/include/boost-1_35/boost/thread/detail/platform.hpp:67:9: #error "Sorry, no boost threads are available for this platform." /usr/local/include/boost-1_35/boost/thread/thread.hpp:19:2: #error "Boost threads unavailable on this platform" /usr/local/include/boost-1_35/boost/thread/condition_variable.hpp:18:2: #error "Boost threads unavailable on this platform" /usr/local/include/boost-1_35/boost/thread/condition.hpp:13: syntax error before `;' token /usr/local/include/boost-1_35/boost/thread/mutex.hpp:18:2: #error "Boost threads unavailable on this platform" /usr/local/include/boost-1_35/boost/thread/once.hpp:18:2: #error "Boost threads unavailable on this platform" /usr/local/include/boost-1_35/boost/thread/once.hpp:23: type specifier omitted for parameter `once_flag' /usr/local/include/boost-1_35/boost/thread/once.hpp:23: syntax error before `&' token /usr/local/include/boost-1_35/boost/thread/once.hpp: In function `void boost::call_once(...)': The codes were compiled well with boost 1.32 but once I upgraded to 1.35, this error starts occurring. Any ideas or suggestions are welcomed and appreciated. best regards, Alex Kim