“receita começa antes do primeiro alvo. Parar "Spence Recorder" do Backyard Brains

Question

Estou tentando instalar o "Spike Recorder" do Backyard Brains no meu laptop Ubuntu 16.10 Gnome. Eu resolvi alguns problemas, mas agora estou recebendo o erro "receita começa antes do primeiro alvo. Pare".

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