gcc-5-locales software package provides GCC, the GNU compiler collection (native language support files), 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 gcc-5-locales
gcc-5-locales is installed in your system.
Make ensure the gcc-5-locales package were installed using the commands given below,
$ sudo dpkg-query -l | grep gcc-5-locales *
You will get with gcc-5-locales package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | gcc-5-locales |
| Version | 5.4.1-3 |
| Description | GCC, the GNU compiler collection (native language support files) |
| Sub Section | devel |