In order to compile Lepton from the distributed source archives, you must have the following tools and libraries installed:
gcc/glibc
are recommended, though you may use clang instead).
flex implementation is recommended.
awk tool for data processing.
GNU Awk (gawk) is
recommended.
The following tools and libraries are highly recommended:
groff).
The following tools and libraries are optional:
lepton-schematic
will support mouse gesture recognition.