Feel++ support cmake presets

[prudhomm]

Introduction

Feel++ now supports CMake Presets [1] and vscode supports it as well [2].

We have now a new system of configuration which allows to set up configurations and builds of feelpp.
In vscode replaces the cmake-variants by the cmake-tools but it is necessary to have cmake 3.21.
This version of cmake is installed on ubutu 20.04 via snap.

sudo snap install --classic cmake
# then update .bashrc or .zshrc
export PATH=/snap/cmake/current/bin:$PATH

Feel++ components

Feel++ now enjoys three more components aside from feelpp, toolboxes and mor, namely the python wrapper of the exiting components:

• pyfeelpp the python wrapper for feelpp
• pyfeelpp-toolboxes the python wrapper for toolboxes
• pyfeelpp-mor the python wrapper for mor

This allows to build separately the python wrappers as long as the corresponding components and their dependencies are installed.

CmakePresets Configurations

The available Presets configurations are defined by the components currently, but they will be extended very soon:
We have:

• default on configuration which compiles and installs everything
• feelpp compiles and installs only the Feel++ library
• pyfeelpp compiles and installs only the pyfeelpp component
• toolboxes compiles and installs only the Feel++ toolboxes
• pyfeelpp-toolboxes compiles and installs only the Feel++ toolboxes python wrapper
• mor compiles and installs only the Feel++ MOR
• pyfeelpp-mor compiles and installs only the Feel++ MOR python wrapper

to execute a preset, just type for example

cd <feelpp top source dir>
mkdir build
cmake --preset feelpp 

and it will automatically configure the feelpp preset and build it in build/feelpp

[romainhild]

@prudhomm with cmake --preset testsuite the build folder is not used and every build folder in testsuite is created in the top source dir. Is that normal ?

[prudhomm]

I will check asap

[prudhomm]

it does not seem to be the case:

 {
            "name": "testsuite",
            "inherits": "default",
            "displayName": "testsuite",
            "description": "Build only the Feel++ testsuite Component",
            "binaryDir": "${sourceDir}/build/testsuite",
            "cacheVariables": {
                "FEELPP_COMPONENT": "testsuite"
            }
        },

[prudhomm]

@romainhild could you check again ?

[romainhild]

ok indeed, I used an old version of cmake, so I guess the preset was not really taken into account.

[romainhild]

If one wish to use a preset but want to have the build files somewhere else, one can use cmake --preset feelpp -B <path/to/build> for example.