The file is read by CMake (via new a json parser submodule) and
the web site generator and provides info on required clang and
gcc versions. This info will be expanded in future commits.

Goal is to have a single source of truth for versions infos and
maybe other requirements.

On CMake you access the info via `ogs.`-prefixed variables:

    ${ogs.minimum_version.gcc}

In Hugo you access the info via the new dataFile-shortcode:

    {{< dataFile "versions.minimum_version.gcc" >}}

Lars Bilke authored 5 years ago and Dmitri Naumov committed 5 years ago

Before: installation via pip.

Thanks to M. Binder for reporting issues!

This disables building of all processes, e.g. if you want to just
build the utils.

Setting OGS_BUILD_CLI=OFF also disables all processes.

Added note for Windows users to enable git symbolic links support.

On Ubuntu 18.04 the systems cmake package is at version 3.10 which
is too old.

Norihiro Watanabe authored 5 years ago and Tom Fischer committed 5 years ago

as titled

BUILD_TESTING is a CMake convention used widely.