SPFactoryFromString</code> or <code>createDSPFactoryFromFile</code> functions runs the compilation chain (Faust + LLVM JIT) and generates the <em>prototype</em> of the class, as a <code>llvm_dsp_factory</code> pointer. This factory actually contains the compiled LLVM IR for the given DSP</li>
<li>alternatively the <code>createCPPDSPFactoryFromBoxes</code>allows to create the factory from a box expression built with the <a href="https://github.com/grame-cncm/faust/blob/master-dev/architecture/faust/dsp/libfa