Question

我想在OSX上的文件夹中本地安装OpenCV版本，而不会覆盖旧的可执行文件所需的旧安装。

我遵循了[这些说明] [1]，特别是使用CMake，使用命令行从源代码构建OpenCV 。

所以基本上我是

使用git下载了源代码，现在它在子文件夹 openCV
创建了一个新目录 cmake_bin_dir
输入 cmake_bin_dir 并创建另一个子目录 instDir
从 cmake_bin_dir 启动了命令cmake -D CMAKE_BUILD_TYPE=DEBUG -D CMAKE_INSTALL_PREFIX=/my/home/Downloads/openCVProject/cmake_bin_dir/instDir/ ../openCV/
我从同一目录首先启动make，然后启动sudo make install。这将在 cmake_bin_dir / instDir 目录中创建*.dylib文件。

要测试安装，我创建了项目目录（位于cmake_bin_dir的同一级别。

我尝试使用以下命令编译名为test.cpp的文件：

    g++ -std=c++11 -I../cmake_bin_dir/ -I../openCV/include -I../openCV/modules/core/include/ \
-I../openCV/modules/calib3d/include/ -I../openCV/modules/features2d/include \
-I../openCV/modules/flann/include -I../openCV/modules/dnn/include -I../openCV/modules/highgui/include/ \
-I../openCV/modules/imgcodecs/include -I../openCV/modules/videoio/include -I../openCV/modules/imgproc/include \
-I../openCV/modules/ml/include -I../openCV/modules/objdetect/include -I../openCV/modules/photo/include \
-I../openCV/modules/shape/include -I../openCV/modules/stitching/include -I../openCV/modules/superres/include \
-I../openCV/modules/video/include -I../openCV/modules/videostab/include test.cpp -o test.o

我逐个添加了include，因为每次都遇到编译错误。但是现在我得到一个链接错误：

Undefined symbols for architecture x86_64:
  "cv::String::deallocate()", referenced from:
      cv::String::~String() in test-afd12e.o
      cv::String::operator=(cv::String const&) in test-afd12e.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

所以我的问题是如何使用OpenCV库的本地安装来编译程序和其他项目？ [1]：https://docs.opencv.org/2.4/doc/tutorials/introduction/linux_install/linux_install.html

Answer 1

好的，我发现了我的错误。如果有人遇到相同的问题，请尝试在终端上执行此操作：

export DYLD_LIBRARY_PATH=../your/path/lib/:$DYLD_LIBRARY_PATH

在我的情况下，我执行了：

export DYLD_LIBRARY_PATH=../cmake_bin_dir/lib/:$DYLD_LIBRARY_PATH

我还创建了一个具有以下内容的Makefile：

CPP = g++ -std=c++11

# OpenCV trunk
CPPFLAGS = -L../cmake_bin_dir/lib/ \
       -I../cmake_bin_dir/include \
           -I../cmake_bin_dir/ -I../openCV/include -I../openCV/modules/core/include/ \
           -I../openCV/modules/calib3d/include/ \
           -I../openCV/modules/features2d/include \
           -I../openCV/modules/flann/include -I../openCV/modules/dnn/include -I../openCV/modules/highgui/include/ \
           -I../openCV/modules/imgcodecs/include -I../openCV/modules/videoio/include -I../openCV/modules/imgproc/include \
       -I../openCV/modules/ml/include -I../openCV/modules/objdetect/include -I../openCV/modules/photo/include \
       -I../openCV/modules/shape/include -I../openCV/modules/stitching/include -I../openCV/modules/superres/include \
       -I../openCV/modules/video/include -I../openCV/modules/videostab/include \
           `pkg-config --cflags --libs ../cmake_bin_dir/instDir/lib/pkgconfig/opencv.pc`

# Opencv 2.4.8
#CPPFLAGS = -L/home/krystof/libs/opencv-2.4.8/release/installed/libs \
       -I/home/krystof/libs/opencv-2.4.8/release/installed/include

all: test

test: test.cpp
    $(CPP) $(CPPFLAGS) $^ -o $@

现在执行make应该使用本地openCV版本构建程序。

在本地安装后如何包含和使用openCV库？

1 个答案: