Question

我正在尝试编译一个使用2 .cc文件和.h

的项目

我正在写一个Makefile，但它没有编译，我收到一个错误：

 make
g++ -I/usr/local/include/ -I/usr/local/include/libfreenect -I. -I/usr/include/GL -fPIC -g -Wall `pkg-config --cflags opencv` -L/usr/X11R6/lib -L/usr/lib -L/lib simple_gesture.cc -o simple_gesture  `pkg-config --libs opencv` -L/usr/local/lib -lfreenect -lglui -lglut -lGLU -lGL 
simple_gesture.cc: In function ‘void depth_cb(freenect_device*, void*, uint32_t)’:
simple_gesture.cc:315: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘clock_t’
simple_gesture.cc:315: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long int’
/tmp/cck2APvc.o: In function `depth_cb(_freenect_device*, void*, unsigned int)':
/home/dany/ToCompile/kinect-apps-playground-fingertip-detection/simple_gesture.cc:313: undefined reference to `FeatureExtractor::Process(unsigned char*, int const*, int)'
collect2: ld returned 1 exit status
make: *** [simple_gesture] Error 1

Makefile是这样的：

all: simple_gesture

CFLAGS=-fPIC -g -Wall `pkg-config --cflags opencv`
LIBS = `pkg-config --libs opencv`
INCLUDE = -I/usr/local/include/ -I/usr/local/include/libfreenect -I. -I/usr/include/GL
FREE_LIBS = -L/usr/local/lib -lfreenect
GL_LIBS = -lglui -lglut -lGLU -lGL 
GL_FLAGS = -L/usr/X11R6/lib -L/usr/lib -L/lib

feature_extractor: feature_extractor.h feature_extractor.cc
    $(CXX) $(INCLUDE) $(CFLAGS) $(GL_FLAGS) $? -o $@  $(LIBS) $(FREE_LIBS) $(GL_LIBS)

simple_gesture:  simple_gesture.cc
    $(CXX) $(INCLUDE) $(CFLAGS) $(GL_FLAGS) $? -o $@  $(LIBS) $(FREE_LIBS) $(GL_LIBS)

%.o: %.c
    $(CXX) -c $(CFLAGS) $< -o $@

clean:
    rm -rf *.o feature_extractor simple_gesture

我认为我没有很好地链接文件..

有什么想法吗？

[编辑] 解决

这就足够了：

simple_gesture：feature_extractor.h feature_extractor.cc simple_gesture.cc $（CXX）$（INCLUDE）$（CFLAGS）$（GL_FLAGS）$？ -o $ @ $（LIBS）$（FREE_LIBS）$（GL_LIBS）

Answer 1

显然， simple_gesture.cc 取决于 FeatureExtractor 类中的某些功能。因此，您应该考虑将 feature_extractor.o 关联到 simple_gesture 。

Answer 2

您需要使二进制文件依赖于目标文件的存在，而不是源文件。您已经有了将源转换为对象的规则。

all: simple_gesture

LIBS = `pkg-config --libs opencv`
INCLUDE = -I/usr/local/include/ -I/usr/local/include/libfreenect -I. -I/usr/include/GL
FREE_LIBS = -L/usr/local/lib -lfreenect
GL_LIBS = -lglui -lglut -lGLU -lGL 
GL_FLAGS = -L/usr/X11R6/lib -L/usr/lib -L/lib
CFLAGS=-fPIC -g -Wall `pkg-config --cflags opencv` $(INCLUDE)

feature_extractor: feature_extractor.o
    $(CXX) $(GL_FLAGS) -o $@  $(LIBS) $(FREE_LIBS) $(GL_LIBS) $<

simple_gesture:  simple_gesture.o feature_extractor.o
    $(CXX) $(GL_FLAGS) -o $@  $(LIBS) $(FREE_LIBS) $(GL_LIBS) $<

%.o: %.cc
    $(CXX) -c $(CFLAGS) -o $@ $<

clean:
    rm -rf *.o feature_extractor simple_gesture

简单的Makefile问题

2 个答案: