an error occurs when i attend to install newlisp in developi

[kuangdash]

After having installed the "newlisp_10.6.1-utf8_amd64.deb"



I put "newlisp" in shell to activate it.( my system arguments:  debian wheezy amd64)



newlisp: error while loading shared libraries: libffi.so.6: cannot open shared object file: No such file or directory