To build Leon you will need JDK, scala, sbt, and some external solver binaries. On Linux, it should already work out of the box.
To get started, see the documentation chapters, such as
For change log, see CHANGELOG.md
Leon verification has recently been split off into
Leon remains (for now) the main project for synthesis and repair as well as resource bounds inference. However, developpment of verification-related features will most likely be confined to the Stainless/Inox front.