The following error is happening when I try to build cufflinks. I am on Red Hat Enterprise Linux 6.1 and I have installed every boost package available from the RHN repositories. (I would install directly from boost but RHN support is usually anal about using stuff from source when its available from them.) Cufflinks says it uses boost 1.38, and the package version is 1.41, so the version should be adequate. I'm somewhat lost now. This occurred after I noticed some of the pre-bulit binaries had issues with red-hat's version of the z-lib library, so I was trying to see if building the package would interface properly with the included z-lib from redhat, but then I ran into this boost problem. the error: cufflinks.o:(.rodata._ZTIN5boost6detail11thread_dataINS_3_bi6bind_tIvPFvRK16RefSequenceTableP9HitBundleP11BiasLearnereP8_IO_FILESC_SC_ENS2_5list7INS_17reference_wrapperIS5_EENS2_5valueIS8_EENSI_ISA_EENSI_IeEENSI_ISC_EESM_SM_EEEEEE[typeinfo for boost::detail::thread_data, boost::_bi::value, boost::_bi::value<long double>, boost::_bi::value<_IO_FILE*>, boost::_bi::value<_IO_FILE*>, boost::_bi::value<_IO_FILE*> > > >]+0x10): undefined reference to `typeinfo for boost::detail::thread_data_base' libcufflinks.a(common.o): In function `boost::thread_specific_ptr >::~thread_specific_ptr()': common.cpp:(.text._ZN5boost19thread_specific_ptrISsED2Ev[_ZN5boost19thread_specific_ptrISsED5Ev]+0x35): undefined reference to `boost::detail::set_tss_data(void const*, boost::shared_ptrboost::detail::tss_cleanup_function, void*, bool)' libcufflinks.a(assemble.o): In function `boost::thread_specific_ptr >::get() const': /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' /usr/include/boost/thread/tss.hpp:82: undefined reference to `boost::detail::get_tss_data(void const*)' libcufflinks.a(assemble.o):/usr/include/boost/thread/tss.hpp:82: more undefined references to `boost::detail::get_tss_data(void const*)' follow collect2: ld returned 1 exit status make[2]: *** [cufflinks] Error 1 M.Gooch