Typical build recipes
VASP 5.4.4 uses a makefile.include system located in the root of the source directory. You need to copy a template and edit it.
-fallow-argument-mismatch is required for gfortran >=10 due to stricter interface checking.
You cannot download VASP publicly. You must have a valid license from the VASP Software GmbH. Once licensed, you will receive a tarball named something like vasp.5.4.4.tar.gz . Place this in your source directory (e.g., $HOME/src ).