Steem compiled under Ubuntu [TUTORIAL]

 In a clean Ubuntu 14 LTS 64bit environment, follow the steps below to compile, it should not be a problem. If the environment is not clean, please find their own reasons.

Note 1: The boost from sourceforge download is very slow, I do not know how to download boost domestic more convenient, know please add.
Note 2: gcc 4.9 installed does not seem to be used, there can be confirmed at the time 

sudo apt-get update
sudo apt-get install gcc-4.9 cmake make libbz2-dev libdb++-dev libdb-dev libssl-dev openssl libreadline-dev autoconf libtool git autotools-dev build-essential g++ libbz2-dev libicu-dev python-dev doxygen ntp

wget -c 'http://sourceforge.net/projects/boost/files/boost/1.57.0/boost_1_57_0.tar.bz2/download' -O boost_1_57_0.tar.bz2
tar xjf boost_1_57_0.tar.bz2
cd boost_1_57_0
./bootstrap.sh
sudo ./b2 install
cd ..

git clone https://github.com/steemit/steem.git
cd steem
git checkout v0.12.2
git submodule update --init --recursive

mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DENABLE_CONTENT_PATCHING=OFF -DLOW_MEMORY_NODE=ON ..
make steemd cli_wallet

 After compiling how good use, you have time to post.