Question

我有一个库，我试图将openCV（我认为我成功地）链接到一个大的动态库中。然后我尝试添加一个可执行文件并将所有内容链接在一起以测试库，我每次都会出现2000-3000错误

In function `________________`: undefined reference to `________`

一些例子是：

/path/to/libs/libopencv_features2d.a(matchers.cpp.o): In function `cv::FlannBasedMatcher::read(cv::FileNode const&)':
matchers.cpp:(.text._ZN2cv17FlannBasedMatcher4readERKNS_8FileNodeE+0x227): undefined reference to `cv::flann::IndexParams::setAlgorithm(int)'

/path/to/libs/libopencv_videoio.a(cap_gstreamer.cpp.o)` In function `CvCapture_GStreamer::getProperty(int) const':
cap_gstreamer.cpp:(.text._ZNK19CvCapture_GStreamer11getPropertyEi+0x8b): undefined reference to `gst_element_query_position'

/path/to/lib/libopencv_core.a(stat.cpp.o): In function `cv::norm(cv::_InputArray const&, int, cv::_InputArray const&)':
stat.cpp:(.text._ZN2cv4normERKNS_11_InputArrayEiS2_+0x1d27): undefined reference to `ippicviNorm_L1_32f_C1MR'
stat.cpp:(.text._ZN2cv4normERKNS_11_InputArrayEiS2_+0x1dab): undefined reference to `ippicviNorm_L1_8u_C1MR'

我的cmake文件运行：

project(SDK-build)
cmake_minimum_required(VERSION 2.8)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

set(MYLIB_SRC
    file1.cpp
    file2.cpp
    file3.cpp
)

add_library(gesture SHARED ${MYLIB_SRC})

cmake_policy(SET CMP0015 NEW)
link_directories(./opencvlib-wgstreamer)
set(OPENCV_LIBS
    libopencv_calib3d.a
    libopencv_core.a
    libopencv_features2d.a
    libopencv_highgui.a
    libopencv_imgcodecs.a
    libopencv_imgproc.a
    libopencv_ml.a
    libopencv_objdetect.a
    libopencv_photo.a
    libopencv_video.a
    libopencv_videoio.a
)

set(TEST_SRC
    test.cpp
)

add_executable(gesture_test ${TEST_SRC})

#build library
#target_link_libraries(gesture -Wl,-whole-archive ${OPENCV_LIBS} -Wl,--no-whole-archive)

#build library with executable
target_link_libraries(gesture_test gesture -Wl,-whole-archive ${OPENCV_LIBS} -Wl,--no-whole-archive)

当我使用第一个target_link_libraries时，所有内容都构建并且make没有执行问题，但是使用main（）链接文件会导致大量混淆。任何建议我几个小时都在讨论这个问题。我还尝试了使用WITH_IPP=ON，WITH_IPP=OFF和WITH_GSTREAMER_ON

编译opencv的几种组合

Answer 1

您必须以正确的顺序指定库。有关详细信息，请参阅here。

编辑我看到你正在使用-Wl-whole-archive，我认为这是解决问题的另一种方法，所以也许我错了

将opencv捆绑为静态库会产生数千个未定义的引用

1 个答案: