option('blas', type: 'string', value: 'openblas',
        description: 'option for BLAS library switching')
option('lapack', type: 'string', value: 'openblas',
        description: 'option for LAPACK library switching')
option('use-g77-abi', type: 'boolean', value: false,
        description: 'If set to true, forces using g77 compatibility wrappers ' +
                     'for LAPACK functions. The default is to use gfortran ' +
                     'ABI for all LAPACK libraries except MKL.')
option('use-pythran', type: 'boolean', value: true,
        description: 'If set to false, disables using Pythran (it falls back ' +
                     'to either pure Python code or Cython code, depending on ' +
                     'the implementation).')