I have tried to build multichain from sources using ubuntu 14.04 , but libdb4.8-dev is no more avaiable.
I downloaded it from http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz and compiled it, but launching multichaind I got an Error initializing wallet database environment that suggests I did something wrong.
Moreover the multichain-util build launched in another ubuntu system, where the downloaded binaries work, fails as follows:
multichain-util: error while loading shared libraries: libboost_system.so.1.54.0: cannot open shared object file: No such file or directory
Could you update your Linux Build Notes to build binaries working on most distro ?