libspqr1.3.1 software package provides sparse QR factorization library, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libspqr1.3.1
libspqr1.3.1 is installed in your system.
Make ensure the libspqr1.3.1 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libspqr1.3.1 *
You will get with libspqr1.3.1 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libspqr1.3.1 |
| Version | 1:4.2.1-3ubuntu1 |
| Description | sparse QR factorization library |
| Sub Section | libs |