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      1 # This Makefile compiles the label_image example for the Raspberry Pi.
      2 # See tensorflow/contrib/pi_examples/README.md for full build instructions.
      3 
      4 # Find where we're running from, so we can store generated files here.
      5 SCRIPT_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
      6 
      7 # The location of the tensorflow/contrib/makefile directory.
      8 TFMAKEFILE_DIR := $(SCRIPT_DIR)/../../makefile
      9 
     10 # Where compiled objects are stored.
     11 GENDIR := $(SCRIPT_DIR)/gen/
     12 OBJDIR := $(GENDIR)obj/
     13 LIBDIR := $(GENDIR)lib/
     14 BINDIR := $(GENDIR)bin/
     15 
     16 # The expected locations of the TensorFlow library.
     17 TFLIBDIR := $(TFMAKEFILE_DIR)/gen/lib
     18 TFLIBS := $(TFLIBDIR)/libtensorflow-core.a
     19 
     20 # Where the downloads have been stored.
     21 DOWNLOADSDIR := $(TFMAKEFILE_DIR)/downloads
     22 
     23 # The location of the compiled protobuf headers generated by TensorFlow.
     24 PBTGENDIR := $(TFMAKEFILE_DIR)/gen/proto_text/
     25 PROTOGENDIR := $(TFMAKEFILE_DIR)/gen/proto/
     26 
     27 # The name of the output program we're compiling.
     28 EXECUTABLE_NAME := $(BINDIR)/camera
     29 
     30 # Settings for the target compiler.
     31 CXX := gcc
     32 OPTFLAGS := -O0
     33 CXXFLAGS := --std=c++11 $(OPTFLAGS)
     34 LDFLAGS := \
     35 -L/usr/local/lib \
     36 -L$(TFLIBDIR) \
     37 -Wl,--no-whole-archive
     38 INCLUDES := \
     39 -I/usr/local/include \
     40 -I. \
     41 -I$(DOWNLOADSDIR) \
     42 -I$(DOWNLOADSDIR)/eigen/ \
     43 -I$(PROTOGENDIR) \
     44 -I$(PBTGENDIR)
     45 LIBS := \
     46 -Wl,--allow-multiple-definition \
     47 -Wl,--whole-archive \
     48 -ltensorflow-core \
     49 -Wl,--no-whole-archive \
     50 -lstdc++ \
     51 -lprotobuf \
     52 -lv4l2 \
     53 -ldl \
     54 -lpthread \
     55 -lm \
     56 -ljpeg \
     57 -lz
     58 LIBFLAGS :=
     59 
     60 EXECUTABLE_SRCS := tensorflow/contrib/pi_examples/camera/camera.cc
     61 
     62 # File names of the intermediate files target compilation generates.
     63 EXECUTABLE_OBJS := $(addprefix $(OBJDIR), $(EXECUTABLE_SRCS:.cc=.o))
     64 
     65 .PHONY: clean
     66 
     67 # The target that's compiled if there's no command-line arguments.
     68 all: $(EXECUTABLE_NAME)
     69 
     70 # Rules for target compilation.
     71 
     72 $(EXECUTABLE_NAME): $(EXECUTABLE_OBJS) $(TFLIBS)
     73 	@mkdir -p $(dir $@)
     74 	$(CXX) $(CXXFLAGS) $(INCLUDES) \
     75 	-o $(EXECUTABLE_NAME) $(EXECUTABLE_OBJS) \
     76 	$(LIBFLAGS) $(LIB_PATH) $(LDFLAGS) $(LIBS)
     77 
     78 # Matches on C++ source files.
     79 $(OBJDIR)%.o: %.cc
     80 	@mkdir -p $(dir $@)
     81 	$(CXX) $(CXXFLAGS) $(INCLUDES) -c $< -o $@
     82 
     83 # Gets rid of all generated files.
     84 clean:
     85 	rm -rf $(GENDIR)
     86