from http://diaryproducts.net/about/operating_systems/unix/installing_mosh_on_ubuntu_hardy

compile_mosh.sh

#!/usr/bin/env bash

sudo apt-get update
sudo apt-get install build-essential autoconf automake libprotobuf-dev \
                     protobuf-compiler libncurses5-dev zlib1g-dev libio-pty-perl

./autogen.sh
protobuf_CFLAGS=" " protobuf_LIBS="-lprotobuf" ./configure --prefix="/usr"
sed -i s/LITE_RUNTIME/SPEED/ src/protobufs/*.proto
make
sudo make install