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Cannot find omp.h and link libomp on macOS with -DWITH_OPENMP=ON #23092
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Description
System Information
OpenCV version: 4.7.0
OS: macOS 13.0.1 on Apple M1
Compiler: Apple clang version 14.0.0 (clang-1400.0.29.202) Target: arm64-apple-darwin22.1.0
libomp is installed via brew.
Detailed description
modules/core/src/parallel.cpp:123:14: fatal error: 'omp.h' file not found
#include <omp.h>
Steps to reproduce
git clone https://github.com/opencv/opencv.git && cd opencv
cmake -B build -DWITH_OPENMP=ON -DBUILD_ZLIB=OFF .
cmake --build build --target install -j 6Issue submission checklist
- I report the issue, it's not a question
- I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
- I updated to the latest OpenCV version and the issue is still there
- There is reproducer code and related data files (videos, images, onnx, etc)
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