交叉编译示例cpp时出现Opencv链接器错误(libopencv_calib3d.so:无法读取符号)

Question

我正试图为我的beaglebone交叉编译一个示例OpenCV cpp代码，该代码具有基于ARM Cortex A8的AM3359处理器。然而，当我开始交叉编译时，我会得到以下错误：

/usr/local/lib/libopencv_calib3d.so:无法读取符号：文件格式错误collect2:ld返回1退出状态

这似乎是一个链接器错误。我确信libopencv_calib3d.so没有任何问题。因为当我为我的电脑编译程序时，一切都很好。因此，也许问题出在我用于交叉编译的方法上。我是这样做的：

我以compile_opencvarm.sh:的名义写了一个脚本

echo "Cross-Compiling $1" 
if [[ $1 == *.c ]]
then
    arm-linux-gnueabi-gcc -ggdb `pkg-config --cflags opencv` -o `basename $1 .c` $1 `pkg-config --libs opencv`;
elif [[ $1 == *.cpp ]]
then
    arm-linux-gnueabi-g++ -ggdb `pkg-config --cflags opencv` -o `basename $1 .cpp` $1     `pkg-config --libs opencv`;
else
    echo "Please compile only .c or .cpp files with this script"
fi
echo "Cross-Compiled Output => ${1%.*}"

然后将其添加到bashrc:

alias opencv_arm="~/.compile_opencvarm.sh"

现在当我这样做：

root@ghostrider:/home/zero/Desktop# opencv_arm peopledetect.cpp 
Cross-Compiling peopledetect.cpp
/usr/local/lib/libopencv_calib3d.so: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
Cross-Compiled Output => peopledetect

编译脚本和交叉编译脚本的唯一区别是，我在交叉编译脚本中使用了arm-linux-gnueabi前缀。当我只编译cpp文件时：

root@ghostrider:/home/zero/Desktop# opencv peopledetect.cpp 
compiling peopledetect.cpp
Output file => peopledetect

一切正常。程序是可执行的。

现在你认为我的问题是什么？这是链接器错误还是与我的交叉编译过程有关？

问候

edit：哦，现在我注意到，在arm-linux-gnueabi编译器使用基于arm的交叉库之前，我并没有安装它们。所以我安装了它们：

sudo xapt -a armel -m libv4l-dev libgtk2.0-dev libcv-dev libcvaux-dev libhighgui-dev

并编辑脚本如下：

arm-linux-gnueabi-g++ -ggdb `arm-linux-gnueabi-pkg-config --cflags opencv` -o `basename $1 .cpp` $1 `arm-linux-gnueabi-pkg-config --libs opencv`;

但现在我遇到了问题：

root@ghostrider:/home/zero/Desktop# opencv_arm peopledetect.cpp 
compiling peopledetect.cpp
 /usr/lib/gcc/arm-linux-gnueabi/4.6/../../../../arm-linux-gnueabi/bin/ld: warning: liblapack.so.3gf, needed by /usr/arm-linux-gnueabi/lib/libcxcore.so, not found (try using -rpath or -rpath-link)
/tmp/ccDzUCLJ.o: In function `main':
/home/zero/Desktop/peopledetect.cpp:49: undefined reference to `cv::HOGDescriptor::setSVMDetector(cv::_InputArray const&)'
/home/zero/Desktop/peopledetect.cpp:84: undefined reference to     `cv::HOGDescriptor::detectMultiScale(cv::Mat const&, std::vector<cv::Rect_<int>,  std::allocator<cv::Rect_<int> > >&, double, cv::Size_<int>, cv::Size_<int>, double, double, bool) const'
 /tmp/ccDzUCLJ.o: In function `cv::Mat::operator=(cv::Mat const&)':
 /usr/include/opencv2/core/mat.hpp:317: undefined reference to `cv::Mat::copySize(cv::Mat     const&)'
/tmp/ccDzUCLJ.o: In function `cv::Mat::release()':
 /usr/include/opencv2/core/mat.hpp:382: undefined reference to `cv::Mat::deallocate()'
 /tmp/ccDzUCLJ.o: In function `_InputArray<float>':
 /usr/include/opencv2/core/mat.hpp:1108: undefined reference to `vtable for cv::_InputArray'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dgelsd_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dpotrf_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dpotri_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dsyevr_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dgesv_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dpotrs_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dgetri_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `sgels_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `sgesv_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dgetrf_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `sgetrf_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dgels_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `spotrf_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `sgelsd_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `sgesdd_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `spotri_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `ssyevr_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `dgesdd_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `spotrs_'
/usr/arm-linux-gnueabi/lib/libcxcore.so: undefined reference to `sgetri_'
collect2: ld returned 1 exit status
Output file => peopledetect

Answer 1

我按照本指南交叉编译了所有OpenCV库，解决了我的问题：http://processors.wiki.ti.com/index.php/Building_OpenCV_for_ARM_Cortex-A8

Answer 2

我遵循了本指南，但opencv distributive根目录中的"lnclude/occv2"目录在构建后是空的。所以实际上我有库，但没有头。我做错了什么？

乌干达人民国防军：我应该小心一点，所有答案都在http://processors.wiki.ti.com/index.php/Building_OpenCV_for_ARM_Cortex-A8