Ubuntu 12.04.4'te libffi ve libffi5-dev paketi apt-get üzerinden bulunamadı
$ sudo apt-get install libffi libffi5-dev Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package libffi E: Unable to locate package libffi5-dev baska deneme: $ sudo apt-get install libffi5 libffi-dev Reading package lists... Done Building dependency tree Reading state information... Done E: Unable …