For building this application, Qt 5 is required
You can get it here: https://www.qt.io/download/
First build ShareYourClipboard.pro with Qt Creator - it is a typical Qt project
After building do the following:
#Windows
Place ShareYourClipboard.exe in build folder, copy data folder,
copy platforms plugin with qwindows, copy necessary qt libs
Pack in compressed folder ShareYourClipboard_Windows.zip
#Mac OS X
Copy data into ShareYourClipboard.app/Contents/MacOS
copy platforms/libqcocoa.dylib into ShareYourClipboard.app/Contents/PlugIns/platforms
add key LSUIElement with value 1 into ShareYourClipboard.app/Contents/Info.plist
execute macdeployqt with -dmg flag(<path_to_qt/macdeployqt ShareYourClipboard.app -dmg>)
Rename package to ShareYourClipboard_MacOSX.dmg
#Linux Place ShareYourClipboard in build folder, copy data folder, copy checksystem Pack into ShareYourClipboard_Linux.tar.gz