hello, I am compiling my code with g++4.8.1 under c++11 mode, however the fedora's system provided boost thread lib has been compiled under c++98. Linking fails because of errors like: mainthread.cpp:(.text+0x2cf): undefined reference to `boost::thread::start_thread()' mainthread.cpp:(.text+0xcc9): undefined reference to `boost::thread::join()' looking at the provided shared object, nm -C -D /usr/lib64/libboost_thread-mt.so.1.53.0 |grep start_thread 000000000000ba80 T boost::thread::start_thread_noexcept(boost::thread_attributes const&) 000000000000ba00 T boost::thread::start_thread_noexcept() neither of which is start_thread() I've put an entry here https://bugzilla.redhat.com/show_bug.cgi?id=1021009 Is there a possible workaround? MM