need to actually build the files

Author: jepler

ports/unix/variants/coverage/mpconfigvariant.mk

@@ -56,6 +56,7 @@ SRC_BITMAP := \
 	shared-bindings/synthio/LFO.c \
 	shared-bindings/synthio/Note.c \
 	shared-bindings/synthio/Biquad.c \
+	shared-bindings/synthio/BlockBiquad.c \
 	shared-bindings/synthio/Synthesizer.c \
 	shared-bindings/traceback/__init__.c \
 	shared-bindings/util.c \
@@ -87,6 +88,7 @@ SRC_BITMAP := \
 	shared-module/synthio/LFO.c \
 	shared-module/synthio/Note.c \
 	shared-module/synthio/Biquad.c \
+	shared-module/synthio/BlockBiquad.c \
 	shared-module/synthio/Synthesizer.c \
 	shared-module/traceback/__init__.c \
 	shared-module/zlib/__init__.c \

py/circuitpy_defns.mk

@@ -717,6 +717,7 @@ SRC_SHARED_MODULE_ALL = \
 	supervisor/__init__.c \
 	supervisor/StatusBar.c \
 	synthio/Biquad.c \
+	synthio/BlockBiquad.c \
 	synthio/LFO.c \
 	synthio/Math.c \
 	synthio/MidiTrack.c \