我對C++ Makefile相當陌生。最近,我嘗試重新實現本文介紹的密集軌跡算法:https://lear.inrialpes.fr/people/wang/dense_trajectories用於C++程序的Makefile不能被正確編譯
但是,我一直在爲Makefile而苦苦掙扎,他們提供了相當長的一段時間。 Makefile文件如下:
# set the binaries that have to be built
TARGETS := DenseTrack Video
# set the build configuration set
BUILD := release
#BUILD := debug
# set bin and build dirs
BUILDDIR := .build_$(BUILD)
BINDIR := $(BUILD)
# libraries
LDLIBS = $(addprefix -l, $(LIBS) $(LIBS_$(notdir $*)))
LIBS := \
opencv_core opencv_highgui opencv_video opencv_imgproc \
avformat avdevice avutil avcodec swscale
# set some flags and compiler/linker specific commands
CXXFLAGS = -pipe -D __STDC_CONSTANT_MACROS -D STD=std -Wall $(CXXFLAGS_$(BUILD)) -I. -I/usr/local/include -I/home/wei/ffmpeg_build/include
CXXFLAGS_debug := -ggdb
CXXFLAGS_release := -O3 -DNDEBUG -ggdb
LDFLAGS = -L/usr/local/lib -L/home/wei/ffmpeg_build/lib -pipe -Wall $(LDFLAGS_$(BUILD))
LDFLAGS_debug := -ggdb
LDFLAGS_release := -O3 -ggdb
include make/generic.mk
我可以確認我的opencv2.4.2和ffmpeg5.4.0已成功安裝在Ubuntu 16.04,運行使用這些兩個庫的例子。
對於OpenCV的: 的庫路徑是:在/ usr /本地/ lib中
libavcodec.a libopencv_gpu.so.2.4
libopencv_photo.so.2.4
libavdevice.a libopencv_gpu.so.2.4.2 libopencv_photo.so.2.4.2
libavfilter.a libopencv_highgui.so libopencv_stitching.so
libavformat.a libopencv_highgui.so.2.4 libopencv_stitching.so.2.4
libavutil.a libopencv_highgui.so.2.4.2 libopencv_stitching.so.2.4.2
libopencv_calib3d.so libopencv_imgproc.so libopencv_ts.so
libopencv_calib3d.so.2.4 libopencv_imgproc.so.2.4 libopencv_ts.so.2.4
libopencv_calib3d.so.2.4.2 libopencv_imgproc.so.2.4.2 libopencv_ts.so.2.4.2
libopencv_contrib.so libopencv_legacy.so libopencv_video.so
libopencv_contrib.so.2.4 libopencv_legacy.so.2.4 libopencv_video.so.2.4
libopencv_contrib.so.2.4.2 libopencv_legacy.so.2.4.2 libopencv_video.so.2.4.2
libopencv_core.so libopencv_ml.so libopencv_videostab.so
libopencv_core.so.2.4 libopencv_ml.so.2.4 libopencv_videostab.so.2.4
libopencv_core.so.2.4.2 libopencv_ml.so.2.4.2 libopencv_videostab.so.2.4.2
libopencv_features2d.so libopencv_nonfree.so libpostproc.a
libopencv_features2d.so.2.4 libopencv_nonfree.so.2.4 libswresample.a
libopencv_features2d.so.2.4.2 libopencv_nonfree.so.2.4.2 libswscale.a
libopencv_flann.so libopencv_objdetect.so pkgconfig
libopencv_flann.so.2.4 libopencv_objdetect.so.2.4 python2.7
libopencv_flann.so.2.4.2 libopencv_objdetect.so.2.4.2 python3.5
libopencv_gpu.so libopencv_photo.so
的包括路徑是:USR /本地/包括:
libavcodec libavfilter libavutil libswresample opencv
libavdevice libavformat libpostproc libswscale opencv2
對於ffmpeg的: 的LIB路徑是:/ home/user/ffmpeg_build/lib
libavcodec.a libavfilter.a libavutil.a libfdk-aac.la libswresample.a libx265.a
libavdevice.a libavformat.a libfdk-aac.a libpostproc.a libswscale.a pkgconfig
包含路徑是:/家庭/用戶/的ffmpeg /包括
fdk-aac libavdevice libavformat libpostproc libswscale x265.h
libavcodec libavfilter libavutil libswresample x265_config.h
所以,當我的Makefile做到,我沒有錯誤,但它似乎連接是否正常工作,也不是編譯的輸出。
我試着用g ++命令直接編譯。
sudo g++ -o Video -pipe -D __STDC_CONSTANT_MACROS -D STD=std -Wall -I. -I/usr/local/include -O3 -DNDEBUG -ggdb -L/usr/local/lib -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lavformat -lavdevice -lavutil -lavcodec -lswscale *.h Video.cpp
然而,返回爲錯誤:
/tmp/ccjYmwI4.o: In function `main':
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:33: undefined reference to `cvCreateFileCapture'
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:48: undefined reference to `cvQueryFrame'
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:57: undefined reference to `cvCopy'
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:60: undefined reference to `cvShowImage'
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:61: undefined reference to `cvWaitKey'
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:53: undefined reference to `cvCreateImage'
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:70: undefined reference to `cvDestroyWindow'
/home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:41: undefined reference to `cvNamedWindow'
collect2: error: ld returned 1 exit status
我一直在這個問題上了好幾天。任何幫助或建議將非常感激。
感謝
嘗試使用'g ++ Video.cpp -o Video -pipe -D __STDC_CONSTANT_MACROS -D STD = std -Wall -I進行測試。 -I/usr/local/include -O3 -DNDEBUG -ggdb -L / usr/local/lib -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lavformat -lavdevice -lavutil -lavcodec -lswscale'代替。 – user657267