How to configure C and Fortran compilers

As pointed out in the tutorial on Configuring compilation and execution Snek5000, it relies on a default configuration file with sane defaults for C and Fortran compilers such as gcc, gfortran and its MPI wrappers and flags.

You can also generate a machine / user specific configuration file using snek-generate-config command-line tool which would copy the default configuration to $HOME/.config/snek5000.yml and modify it to your needs. Read more about this here.

Other possibilities include overriding from the Python simulation script and via environment variables.