ruby-ffi 1.9.10debian-1build4 (armhf binary) in ubuntu bionic

 Ruby-FFI is a ruby extension for programmatically loading dynamic
 libraries, binding functions within them, and calling those functions
 from Ruby code. Moreover, a Ruby-FFI extension works without changes
 on Ruby and JRuby. Discover why should you write your next extension
 using Ruby-FFI here[http://wiki.github.com/ffi/ffi/why-use-ffi].