Here is the developers page
Environment variables that must be set
BSD_INC - FreeBSD based include headers, a compatible copy can be found at freebsd-headers
You can set this on windows using SET BSD_INC="path" or on linux using export BSD_INC="path"
ONI_FRAMEWORK - Absolute path, or relative path (to current building project) to the OniFramework directory
To get started, from the Mira root directory run Scripts/init_development_environment.cmd if you are on windows or Scripts/init_development_environment.sh if you are on linux.
This will parse the configuration file and set the environment variables accordingly.
REMOTE_BUILD_DIR ~/projects
MIRA_DIR same jawn