Appendix: Installing the example languages

DOMjudge ships with some default languages with a default configuration. As you might set up contests with those languages we provide how those languages were installed in the past as guideline. Use dj_run_chroot for most of those packages, and see the section Creating a chroot environment for more information.

Most of the languages can be installed from the table below as there is a package available to install inside the judging chroot. Given that you can install your own chroot we only provide the packages for Ubuntu as that is the most used at the moment of writing.

Packages for languages

Language	Ubuntu package	Remarks
Ada	gnat
AWK	mawk/gawk	mawk is default installed
Bash	bash	Default installed in the chroot
C	gcc	Default installed in the chroot
C++	g++	Default installed in the chroot
C#	mono-mcs
Fortran	gfortran
Haskell	ghc	After installing you need to move these files /{usr->var}/lib/ghc/package.conf.d as /var is not mounted during compilation.
Java	default-jdk-headless	Default installed in the chroot
Javascript	nodejs
Kotlin	kotlin
Lua	lua5.4	Ubuntu does not ship a generic meta package (yet).
Pascal	fp-compiler
Perl	perl-base	Default installed in the chroot
POSIX shell	dash	Default installed in the chroot
Prolog	swi-prolog-core-packages
Python3	pypy3/python3	Default installed in the chroot. DOMjudge assumes pypy3 as it runs faster in general. Consider the PyPy3 PPA if you need the latest python3 features. PyPy3 does not have 100% compatibility with all non-standard libraries. In case this is needed you should reconsider the default CPython implementation.
OCaml	ocaml
R	r-base-core
Ruby	ruby
Rust	rustc
Scala	scala
Swift		See the Swift instructions, unpack the directory in the chroot and install libncurses6. Depending on where you install the directory you might need to extend the PATH in the run script.