Linux下项目构建编译时OpenCV 找不到报错_cmake error at opencv_tutorial/cmakelists.txt:149

OpenCV 找不到或者系统版本不符合当前项目需求，报错如下：

cmake ..
# 输出如下：
CMake Error at example/CMakeLists.txt:2 (find_package):
  Could not find a configuration file for package "OpenCV" that is compatible
  with requested version "3.0.0".

  The following configuration files were considered but not accepted:

    /usr/local/lib64/cmake/opencv4/OpenCVConfig.cmake, version: 4.5.1



-- Configuring incomplete, errors occurred!

1
2
3
4
5
6
7
8
9
10
11
12
13
14

• 编译安装 合适 (3.4) 版本的 OpenCV ，然后在 CMakeLists.txt 进行目录配置

vim CMakeLists.txt 

# 添加如下：指定 你编译安装的 目录
set(OpenCV_DIR /build/opencv-3.4.13/build)
find_package(OpenCV REQUIRED)

1
2
3
4
5
6

• 正确输出效果如下：

cd build/
[root@f31df29c1509 build]# cmake ..
-- Found OpenCV: /build/opencv-3.4.13/build (found version "3.4.13") 
-- CMAKE_INSTALL_PREFIX = /usr/local
-- Found OpenCV: /build/opencv-3.4.13/build (found suitable version "3.4.13", minimum required is "3.0.0") found components: core imgcodecs imgproc highgui 
-- Found OpenMP_CXX: -fopenmp (found version "3.1") 
-- Found OpenMP: TRUE (found version "3.1")  
OPENMP FOUND
-- Configuring done
-- Generating done
-- Build files have been written to: /build/ocr/mobile-lpr-master/build

1
2
3
4
5
6
7
8
9
10
11
12

---

---

cmake… 执行时 – 其它可能遇到的情况记录

---

比如：OpenCV_DIR 的路径设置为 安装路径 /usr/local 可能会遇到如下报错

原因是，OpenCV 路径设置不对

• 设置为编译路径即可解决

vim ../CMakeLists.txt 


# 这个 文件中  OpenCV_DIR 的路径要设置正确，才能运行

set(OpenCV_DIR /home/moli/soft/sysOpenCV/opencv/build)
find_package(OpenCV REQUIRED)


1
2
3
4
5
6
7
8
9