- use pffft from the package, see https://github.com/DISTRHO/Cardinal/issues/130

--- src/Makefile.orig	2023-10-24 08:52:03 UTC
+++ src/Makefile
@@ -48,8 +48,8 @@ RACK_FILES += override/Scene.cpp
 RACK_FILES += override/OpenGlWidget.cpp
 RACK_FILES += override/Scene.cpp
 
-RACK_FILES += Rack/dep/pffft/pffft.c
-RACK_FILES += Rack/dep/pffft/fftpack.c
+#RACK_FILES += Rack/dep/pffft/pffft.c
+#RACK_FILES += Rack/dep/pffft/fftpack.c
 RACK_FILES += Rack/dep/osdialog/osdialog.c
 
 IGNORED_FILES  = Rack/src/asset.cpp