/// The sourceDirectory is there to "emulate" what the real preprocessor will
/// find on the FXS, and is assumed to have the following structure :
/// <pre>
+/// CONFIG/
+/// LDC0.config
+/// LDC1.config
+/// LDC2.config
+/// LDC3.config
/// GAINS/
/// LDC0.gain
/// LDC1.gain