[Discuss-gnuradio] Compile Gnuradio 3.3.0

Can anyone advice on the following:  I am compiling gnuradio 3.3.0 on Ubuntu 10.10 and following instruction on UbuntuInstall of gunradio.org   And I've installed the Boost by apt-get, is it necessary to install Boost manually?  - For Ubuntu 8.04 and older, download and install Boost 1.35 or later as follows    Then, the instruction than teaches me to set the LD_LIBRARY_PATH,  however, the ENV_VAR $BOOST_PREFIX is not set.  export LD_LIBRARY_PATH=$BOOST_PREFIX/lib   Where should I post $BOOST_PREFIX to?  to /usr/lib as the .a lib files are there or to /usr/include/boost where the hpp files are there  Moreover,  it sets the $BOOST_PREFIX/lib  and I can't find lib under the boost directories.   And here are the result of config.log grep boost:  configure:20389: checking for boost >= 1.35 configure:20955: checking whether the boost::thread includes are available   Thanks for kindly help.