meson_options.txt

option('ipopt_dir', type: 'string', value: '',
        description: 'Top-level dir for ipopt')

option('incdir_numpy', type: 'string', value: '',
    description: 'Include directory for numpy. If left empty Meson will try to find it on its own.')

option('python_target', type: 'string', value: '',
    description: '''Target python path. This is used in the case that the Python installation that PyOptSparse is intended
    to be built for is different than the Python installation that is used to run Meson. For example, Meson may be installed
    on the user's system which is run using the system Python installation, but the user may want build PyOptSparse for
    a Python installation in a virtual environment. Leave as an empty string to build for Python installation running
    Meson.''')