clc-intercal software package provides Compiler for the INTERCAL language, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install clc-intercal
clc-intercal is installed in your system.
Make ensure the clc-intercal package were installed using the commands given below,
$ sudo dpkg-query -l | grep clc-intercal *
You will get with clc-intercal package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | clc-intercal |
| Version | 1:1.0~4pre1.-94.-2-5 |
| Description | Compiler for the INTERCAL language |
| Sub Section | devel |