MacOS support

[hn-88]

https://stackoverflow.com/questions/73108273/building-and-distributing-a-macos-application-using-cmake
indicates macdeployqt

[hn-88]

More references
https://amin-ahmadi.com/2019/07/03/deploying-qtopencv-applications-on-macos/
perhaps - not tested.

Or maybe just like linuxdeployqt there might be a -bundle-non-qt-libs option?

Answer: No, it doesn't.
https://doc.qt.io/qt-6/macos-deployment.html

[hn-88]

Even installing the build dependencies fails. Pausing work on this for now.

[hn-88]

This thread suggests a workaround -
brew upgrade || true

Maybe I can try that.

[hn-88]

But, no, elsewhere in the thread, someone says,

This is also not feasible for us as the exact Python version required for a package to be installed is not known/may change.

Hence our workaround is to remove the symlinks on failure and retry: https://github.com/boostorg/boost-ci/blob/ac5ae7e901e49351d19de278cbf82ce8d2c44216/ci/setup_ccache.sh#L17-L24

[hn-88]

Working after removing the symlinks and then running. TODO - make a package?

The github workflow which returns a successful build is at https://github.com/hn-88/OCVWarp/blob/d7abd17b72981f34c22c810decbd20b912420551/.github/workflows/osx-build.yml