from os import environ as env env['CASROOT'] = 'opencascade' env['CSF_ShadersDirectory'] = 'opencascade/src/Shaders' env['CSF_UnitsLexicon'] = 'opencascade/src/UnitsAPI/Lexi_Expr.dat' env['CSF_UnitsDefinition'] = 'opencascade/src/UnitsAPI/Units.dat'