In fact it is much more a memory for myself than some tutorial. But as I have not found any (actual) reference of it.
By the way, I tested during 2.5.x development cicle. Probably it can change. (And will. (As it did.))
Just the commands.
Download boost, unzip it, go to the folder:
./bootstrap.sh ./b2 variant=debug link=static threading=multi --with-system --with-thread --with-date_time --with-regex --with-serialization --with-system --with-program_options --with-filesystem stage mkdir /opt/boost ./b2 install --prefix=/opt/boost
cd ~ mkdir mongo cd mongo git clone https://github.com/mongodb/mongo.git mkdir /opt/mongo scons --full -j 64 --prefix=/opt/mongo/ --cpppath=/opt/boost --libpath=/epidb/opt/boost/
It takes some time because it builds *everything*.
cd ~ mkdir db /opt/mongo/mongod --dbpath db