ardour-altivec software package provides transitional dummy package for (altivec-optimized) ardour, 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 ardour-altivec
ardour-altivec is installed in your system.
Make ensure the ardour-altivec package were installed using the commands given below,
$ sudo dpkg-query -l | grep ardour-altivec *
You will get with ardour-altivec package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Sound |
| Package | ardour-altivec |
| Version | 1:5.4.0~dfsg-2 |
| Description | transitional dummy package for (altivec-optimized) ardour |
| Sub Section | Sound |