libffi3-dev 1:3.4.3-9ubuntu4 (amd64 binary) in ubuntu hoary

Foreign Function Interface library (development files)
 This package contains the headers and static library files necessary for
 building building programs which use libffi.
 .
 Use this package together with gcc-3.4.
 .
 A foreign function interface is the popular name for the interface that
 allows code written in one language to call code written in another
 language.