liblapack3gf software package provides Transitional package for liblapack3, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install liblapack3gf
liblapack3gf is installed in your system.
Make ensure the liblapack3gf package were installed using the commands given below,
$ sudo dpkg-query -l | grep liblapack3gf *
You will get with liblapack3gf package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Old Libraries |
| Package | liblapack3gf |
| Version | 3.5.0-4 |
| Description | Transitional package for liblapack3 |
| Sub Section | oldlibs |