package travis-opam

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Options
1. OPAM_SWITCH
2. Other environment variables

package travis-opam

travis-opam

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Appveyor CI scripts

Instructions:

Create an opam file at the root of your project. If you use opam 1.2, you can simply do opam pin add PKG . -- this will open an editor and propose you a template.
Copy appveyor.yml at the root of your project.
Enable Appveyor runs on https://ci.appveyor.com/projects (sign in with your Github account and click on + on the top pane).

And that's it!

Options

Most of the options detailed in TravisCI scripts are valid.

OPAM_SWITCH

OCAML_VERSION is however handled differently. There are currently three Windows ports of OCaml:

Native Microsoft (msvc)
Native Mingw-w64
Cygwin

Each variant is available in a 32-bit and 64-bit version.

The native mingw-w64 port is supported through cygwin's mingw-w64 cross compiler, the msvc version through Visual Studio Community 2015. The cygwin port is currently not supported by these scripts.

You can choose between different ports and versions through the OPAM_SWITCH variable, e.g:

environment:
  matrix:
    - OPAM_SWITCH: 4.04.0+msvc32
    - OPAM_SWITCH: 4.03.0+mingw64c
    # syntax: ${OCAML_VERSION}+${PORT}${WORD_SIZE}c?

Some versions are available as pre-compiled binaries to speed up the build process (the 'c'-suffix), but not all.

If you don't specify OPAM_SWITCH manually, a recent, pre-compiled mingw port (64-bit) is used. The build instructions of many opam packages are only compatible with gcc.

Other environment variables

CYG_ROOT

Cygwin is used by ocaml-ci-scripts and nearly all opam packages depend on it. By default, the 64-bit version is used. You can switch to the 32-bit version by setting CYG_ROOT to C:\cygwin.

CYG_MIRROR

Cygwin must be updated during the install step. The mirror for this task must be specified manually. If the mirror that is normally used goes offline or becomes too slow, you can point CYG_MIRROR to another supported mirror.

CYG_PKGS

If you need additional packages from cygwin, you can add them to CYG_PKGS (comma separated). By default, the mingw64-x86_64 toolchain is updated. But for most use cases, you should rely on depext-cygwinports.