"recipe commences before first target. Stop" Backyard Brains' "Spike Recorder"
Mia Lopez 
I'm trying to install Backyard Brains' "Spike Recorder" on my Ubuntu 16.10 Gnome laptop. I've resolved some problems but now I'm getting the error "recipe commences before first target. Stop".
CCX = g++
CC = gcc
TARGET = SpikeRecorder
TARGETDIR = SpikeRecorder
OBJECTS = \ src/engine/AudioInputConfig.o \ src/engine/RecordingManager.o \ src/engine/AnalysisManager.o \ src/engine/FileRecorder.o \ src/engine/Player.o \ src/engine/ArduinoSerial.o \ src/engine/SpikeSorter.o \ src/engine/SpikeAnalysis.o \ src/engine/BASSErrors.o \ src/engine/FileReadUtil.o \ src/engine/FFTBackend.o \ src/engine/HIDUsbManager.o \ src/engine/EkgBackend.o \ src/engine/FilterBase.o \ src/engine/HighPassFilter.o \ src/engine/LowPassFilter.o \ src/engine/NotchFilter.o \ src/widgets/LayoutItem.o \ src/widgets/BoxLayout.o \ src/widgets/Widget.o \ src/widgets/Painter.o \ src/widgets/PushButton.o \ src/widgets/DropDownList.o \ src/widgets/ScrollBar.o \ src/widgets/Application.o \ src/widgets/BitmapFontGL.o \ src/widgets/TextureGL.o \ src/widgets/LoadTexture.o \ src/widgets/Label.o \ src/widgets/ErrorBox.o \ src/widgets/TextInput.o \ src/widgets/RangeSelector.o \ src
OBJECTS_LINUX = \ src/widgets/native/FileDialogLinux.o \ src/native/PathsLinux.o
OBJECTS += $(OBJECTS_LINUX)
CFLAGS = -g -O2 -Isrc -Isupport -I. -Wall -DSIGSLOT_PURE_ISO --std=c++11 `sdl2-config --cflags`
LIBS = `sdl2-config --libs` -lSDL2_image -lGL -lGLU -lbass -lpthread -lhidapi-libusb
%.o: %.c $(CC) -o $@ -c $< $(CFLAGS)
%.o: %.cpp $(CCX) -o $@ -c $< $(CFLAGS)
$(TARGET): $(OBJECTS) $(CCX) -o $(TARGET) $(OBJECTS) $(CFLAGS) $(LIBS)
all: $(TARGET)
clean: rm -rf $(TARGET) $(TARGET).exe $(OBJECTS) $(OBJECTS_LINUX) $(TARGETDIR).zip rm -rf $(TARGET).app $(TARGETDIR) _resources.o
.PHONY: all clean
