libclfft-bin software package provides OpenCL FFT library (executables), you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libclfft-bin
libclfft-bin is installed in your system.
Make ensure the libclfft-bin package were installed using the commands given below,
$ sudo dpkg-query -l | grep libclfft-bin *
You will get with libclfft-bin package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Libraries |
| Package | libclfft-bin |
| Version | 2.10.2-1 |
| Description | OpenCL FFT library (executables) |
| Sub Section | Libs |