feat(gui): share plot interaction, trend and spectrum core across JNI and Python

c/set-protocol/ports/android/Android.mk

@@ -8,6 +8,10 @@ LOCAL_SRC_FILES := \
     ../../src/set_can.c \
     ../../src/set_firmware.c \
     ../../src/set_telemetry.c \
+    ../../src/set_plot.c \
+    set_plot_jni.c \
+    ../../src/set_trends.c \
+    ../../src/set_spectrum.c \
     ../../src/gui_catalog.c \
     ../../src/gui_frame.c \
     ../../src/pcan_abi.c \
@@ -19,5 +23,5 @@ LOCAL_SRC_FILES := \
     ../../src/pcan_gas.c \
     setprotocol_jni.c
 LOCAL_CFLAGS := -std=c99 -Wall -Wextra -Wpedantic -fvisibility=hidden
-LOCAL_LDLIBS := -llog
+LOCAL_LDLIBS := -llog -lm
 include $(BUILD_SHARED_LIBRARY)