IPP is randomly dropped from Android package

[ilya-lavrenov]

System Information

See https://github.com/opencv/opencv/releases

Detailed description

N/A

Steps to reproduce

N/A

Issue 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)

[opencv-alalek]

No idea.
I expected the "latest" release too.

Also no idea why windows package is out of scope (I see iOS and Android packages only).

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BTW, there is inconsistency in packages content:

opencv-4.8.1-android-sdk.zip size is 166Mb
opencv-4.8.0-android-sdk.zip size is 189Mb

But both are not valid.
There is sporadically flunk IPPICV dependency in x86 / x86_64 arch builds through GitHub Actions (75% of generated packages are broken).

opencv-4.7.0-android-sdk.zip size is 207Mb - broken too.
opencv-4.6.0-android-sdk.zip size is 225Mb.

[asmorkalov]

@ilya-lavrenov Not all artifacts are ready.
@opencv-alalek I'll debug this IPP issue.

[opencv-alalek]

Not all artifacts are ready.

There is "Draft releases" for that. No need to publish anything until completion.

[mshabunin]

Probably IPP issue is related to internet connection issue, if IPP does not get downloaded correctly it will be turned off silently. There is a cmake options ENABLE_CONFIG_VERIFICATION which should be enabled to verify that each WITH_* option has been satisfied. I.e. it turns them from suggestions to requirements. Here is an example of using this option along with several download attempts: https://github.com/conda-forge/opencv-feedstock/blob/e9bbcf9e1e7ddf30d6a9d0df63852dcc84fdb95b/recipe/build.sh#L56-L59

[mshabunin]

@asmorkalov , since Android builds use separate script which does not allow passing extra cmake options and changing that would require more work in the main repository, we can try workaround path - use download cache for Android builds: #114