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Installing c, c++, ocaml and setup a friendly development environment to create compiler

Installing LLVM 6 on Ubuntu 18.04

wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add - && \
sudo apt-add-repository "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-6.0 main" && \
sudo apt-get update && \
sudo apt-get install -y clang-6.0 && \
update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-6.0 100 && \
update-alternatives --install /usr/bin/clang clang /usr/bin/clang-6.0 100

Installing latest Ocaml and Opam and merlin

Opam is a package manager for Ocaml; we will use it to install the latest Ocaml (18.04/bionic apt repo is not yet up to date).

wget https://raw.githubusercontent.com/ocaml/opam/master/shell/install.sh && \
chmod 755 install.sh && \
sudo ./install.sh && \
sudo apt install make m4 git darcs mercurial bubblewrap && \
opam init && \
eval $(opam env)

(wait a bit)

If you're on 16.04/xenial, there is no package bubblewrap, so you'll need to:

sudo apt-get install software-properties-common python3-software-properties && \
sudo add-apt-repository ppa:ansible/bubblewrap && \
sudo apt-get update && \
sudo apt install bubblewrap

Now let's pick the Ocaml version you want:

opam switch list-available && \
opam switch create . 4.08.0+trunk && \
opam install merlin && \
opam user-setup install

Setup a crossplatform VScode to develop under Windows 10 using GNU/Linux tools

Just install Visual Studio Code (vscode) for Windows. In particular, to get ocaml static analysis work on vscode windows with ocaml/opam/merlin for linux, you need to use the extension OCaml and Reason IDE - for WSL. You'll need to make sure that ~/.opam/default/bin/ is in your path:

echo "export PATH=~/.opam/default/bin/;$PATH" >> .bashrc

Configure the extension, then it should work fine. You can eventually activate codelens for ocaml.

Add bucklescript for more static analysis

You might eventually want to add also the BuckleScript to work with merlin; but bucklescript works with a specific edition of ocaml (4.02.3+buckle-1), that you can install with opam update && opam switch 4.02.3+buckle-1 (and then you can switch between different editions of ocaml with ocaml switch set XXX (list those installed them with ocaml switch list)).

Add multicore ocaml compiler

opam remote add multicore https://github.com/ocamllabs/multicore-opam.git && \
opam repository add multicore --all-switches
opam switch install 4.06.1+multicore
opam switch 4.06.1+multicore

Sources: https://github.com/ocamllabs/ocaml-multicore

Effective Concurrency with Algebraic Effects