OpenCV C++ 在 Macbook M1 芯片中给出架构 arm64 错误

Question

我按照本教程在 Macbook M1 中构建了 OpenCV-4.5.2：https://sayak.dev/install-opencv-m1。它在 Python 中工作正常，但当我在 C++ 中使用时

#include <iostream>
#include <opencv2/core.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui.hpp>

int main()
{
    cv::Mat img = cv::imread("avatar.jpeg");
    return 0;
}

它在 cv::Mat 中给出错误

Undefined symbols for architecture arm64:
  "cv::Mat::~Mat()", referenced from:
      _main in main.cpp.o
  "cv::imread(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int)", referenced from:
      _main in main.cpp.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [imgproc] Error 1
make[2]: *** [CMakeFiles/imgproc.dir/all] Error 2
make[1]: *** [CMakeFiles/imgproc.dir/rule] Error 2
make: *** [imgproc] Error 2

几个小时后，我找不到问题所在。有谁能够帮助我？谢谢！

P/S：作为补充，这是我的 CMakeLists.txt

cmake_minimum_required(VERSION 3.19)
project(imgproc)

set(CMAKE_CXX_STANDARD 14)

# Set the location of the OpenCV directory
set(OpenCV_DIR "/usr/local/include/opencv4")
# Find OpenCV library
find_package( OpenCV 4 REQUIRED )
# Add header file
include_directories(include ${OpenCV_INCLUDE_DIRS} )


add_executable(imgproc main.cpp)

Answer 1

我发现替换这些包括：

#include <opencv2/core.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui.hpp>

与：

#include <opencv2/opencv.hpp>

然后一切正常！

Answer 2

经过一番摸索，我终于解决了这个问题。要在 M1 Mac 上使用 openCV 库，您需要包含

-I/opt/homebrew/Cellar/opencv/4.5.5/include/opencv4/ -lopencv_core -lopencv_imgcodecs -lopencv_highgui -L/opt/homebrew/Cellar/opencv/4.5.5/lib/

作为您的 g++ 编译选项。

Answer 3

我在macOS下测试OpenCV成功，参考： https://medium.com/@mfkhao2009/set-up-opencv-development-enrioment-875aa69bd403

您应该通过将此代码添加到

CMakeLists.txt

来将库链接到目标imgproc

add_executable(imgproc main.cpp)
target_link_libraries(imgproc PUBLIC ${OpenCV_LIBS} )

// or in old cmake version: 
add_executable(imgproc main.cpp)
target_link_libraries(imgproc ${OpenCV_LIBS} )

Answer 4

我一直在处理同样的问题。我不断收到链接器错误（架构arm64的未定义符号...）。仅供参考，我通过自制程序安装在我的 M1 mac 上，并使用 CLion 进行开发。

解决这个问题的方法是将其添加到 cmake 中指定的 X86_64 中：

set(CMAKE_OSX_ARCHITECTURES x86_64)

我的完整

CMakeLists.txt

：

cmake_minimum_required(VERSION 3.9)
set(CMAKE_OSX_ARCHITECTURES x86_64)
project(opencvtest)

set(CMAKE_CXX_STANDARD 23)
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
add_executable(opencvtest main.cpp)

target_link_libraries(opencvtest ${OpenCV_LIBS})