I wanted to install SleepyHead on my new computer (running Ubuntu 14.04 Trusty), but there's no package in the Ubuntu repositories. SleepyHead has instructions for building from source on their wiki, but they don't tell you which packages you need, which is the difficult bit of the process. After some trial and error, I arrived at the following instructions, which worked for me and which I believe to be accurate.
You'll need the following packages installed:
qt5-qmake qtbase5-dev libqt5-serialport5-dev libqt5webkit5-dev libudev-dev.
Now that those are installed, cd to whichever directory you keep source in and run:
mkdir sleepyhead
cd sleepyhead
git clone http://git.code.sf.net/p/sleepyhead/code sleepyhead-code
mkdir build
cd build
export QT_SELECT=qt5
qmake ../sleepyhead-code/SleepyHeadQT.pro
make -j2 # -j is how many cores you have (adjust as appropriate)
Assuming make returned 0, you should now have a directory called build/sleepyhead
and an executable called build/sleepyhead/SleepyHead.
The easiest way to use SleepyHead is to simply run that executable.