Merge pull request #27536 from Kumataro:fix27530

eigen: fix to get version from eigen after v3.4.0 #27536

Close https://github.com/opencv/opencv/issues/27530

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
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Kumataro 2025-07-15 01:09:24 +09:00 committed by GitHub
parent 69b2024a3d
commit 468de9b367
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@ -84,7 +84,13 @@ if(WITH_EIGEN AND NOT HAVE_EIGEN)
set(EIGEN_WORLD_VERSION ${EIGEN3_WORLD_VERSION})
set(EIGEN_MAJOR_VERSION ${EIGEN3_MAJOR_VERSION})
set(EIGEN_MINOR_VERSION ${EIGEN3_MINOR_VERSION})
else() # Eigen config file
elseif(DEFINED Eigen3_VERSION_MAJOR) # Recommended package config variables
# see https://github.com/opencv/opencv/issues/27530
set(EIGEN_WORLD_VERSION ${Eigen3_VERSION_MAJOR})
set(EIGEN_MAJOR_VERSION ${Eigen3_VERSION_MINOR})
set(EIGEN_MINOR_VERSION ${Eigen3_VERSION_PATCH})
else() # Deprecated package config variables
# Removed on master at https://gitlab.com/libeigen/eigen/-/commit/f2984cd0778dd0a1d7e74216d826eaff2bc6bfab
set(EIGEN_WORLD_VERSION ${EIGEN3_VERSION_MAJOR})
set(EIGEN_MAJOR_VERSION ${EIGEN3_VERSION_MINOR})
set(EIGEN_MINOR_VERSION ${EIGEN3_VERSION_PATCH})