Before this setting when there was a newer system installed python
than the one installed in an active virtualenv the system one was
picked up by CMake thus breaking stuff which depends on the active
virtualenv, such as workflow engine (e.g. Parsl) driven tests.

https://python-poetry.org

Choose the tfel installation for usage in Conan by setting TFELHOME
CMake- or environment variable. Is automatically set when using
Conans tfel-package.

Fixes #3034.

Install clcache with:

pip install git+https://github.com/frerich/clcache.git@cae73d8255d78db8ba11e23c51fd2c9a89e7475b

Will be replaced by native CMake precompiled headers.

Requires CMake 3.14

Chaofan Chen authored 4 years ago and Dmitri Naumov committed 4 years ago

The BHE process is not related to the chemical calculation.
So it is not necessary to link the HeatTransportBHE process with the ChemistryLib and iphreeqc while compiling.

- Add ThirdParty directory before CompilerSetup.cmake
- Enable CMP0092 (https://cmake.org/cmake/help/v3.15/policy/CMP0092.html)
- Unified compiler flag setting

Removed jedbrown cmake modules, copied FindPETSc.cmake over.
Check for required Git version.

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" >}}

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.

NMake Makefiles does not have this setting and produced an error.