gobjc-5-mips64el-linux-gnuabi6 software package provides GNU Objective-C compiler, 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 gobjc-5-mips64el-linux-gnuabi6
gobjc-5-mips64el-linux-gnuabi6 is installed in your system.
Make ensure the gobjc-5-mips64el-linux-gnuabi6 package were installed using the commands given below,
$ sudo dpkg-query -l | grep gobjc-5-mips64el-linux-gnuabi6*
You will get with gobjc-5-mips64el-linux-gnuabi6 package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | gobjc-5-mips64el-linux-gnuabi6 |
| Version | 5.4.0-6cross1 |
| Description | GNU Objective-C compiler |
| Sub Section | devel |