How can I install OCaml with OPam on windows?

Question

How can I install OCaml with OPam on windows?

Answer 1

I have been able to setup OCaml 4.03.0 in Windows 10, using the Opam package manager, by following the tutorial from this website: http://fdopen.github.io/opam-repository-mingw/. Here are the detailed steps that I did:

• Install OCaml, Opam and Cygwin:

  • Download the installation package from this link: http://fdopen.github.io/opam-repository-mingw/installation/. There are both the 32 bit and 64 bit version, but I suggest to install the OCaml 64bit .

  • When running the graphical installation file, it will automatically install OCaml 4.02.3, Cygwin, Opam for you.

  • After installing, a shortcut for OCaml and Cygwin will be created on your Windows’ desktop.

• Now, open the Cygwin terminal from the shortcut in your Windows’ desktop and do the followings:

  • Install some required libraries for Opam:

    • opam install depext
    • opam install depext-cygwinports

  • Upgrade your OCaml to 4.03.0 by using Opam:

    • opam switch 4.03.0+mingw64
    • eval `opam config env`

There you have OCaml 4.03.0 on Windows!