Add CI job to build nativeruntime for Windows

[utzcoz]

For #6791.

[utzcoz]

It must wait #6801 and #6924.

[utzcoz]

I found a very strange problem: the cache restored, but restored icu-bin doesn't have generated .a files.

[utzcoz]

Looks like I should find a method to pass value to $GITHUB_ENV at msys2 environment. It's closer to the target. I will take a look at tomorrow.

[utzcoz]

Looks like I should find a method to pass value to $GITHUB_ENV at msys2 environment. It's closer to the target. I will take a look at tomorrow.

I decided to use hard-coded file name to replace GITHUB_ENV for uploading step for Windows.

[utzcoz]

I found a very strange problem: the cache restored, but restored icu-bin doesn't have generated .a files.

I updated cache key with adding cache-v2 to fix this problem for macOS and Linux. But cache doesn't work for Windows with msys2 now. So I let job to build ICU for Windows forcibly temporarily.

[utzcoz]

There is another weird problem: Windows generated dll file is small, about 5~6MB, less than other platforms' file size: about 30MB.

[utzcoz]

@hoisie I think this PR is ready for initial review to looking forward your suggestion.

[hoisie]

There is another weird problem: Windows generated dll file is small, about 5~6MB, less than other platforms' file size: about 30MB.

This is very likely a libICU data issue. The libICU data file alone is like 25 MB, which could explain the difference.

I don't think it's urgent to fix this right away. The libICU sqlite integration is only used for order by ... collate LOCALIZED and order by ... collate UNICODE, which is not super common.

Anyway, I am ok with getting the build working first, and then we can figure out the runtime issues.

[utzcoz]

There is another weird problem: Windows generated dll file is small, about 5~6MB, less than other platforms' file size: about 30MB.

This is very likely a libICU data issue. The libICU data file alone is like 25 MB, which could explain the difference.

I don't think it's urgent to fix this right away. The libICU sqlite integration is only used for order by ... collate LOCALIZED and order by ... collate UNICODE, which is not super common.

Anyway, I am ok with getting the build working first, and then we can figure out the runtime issues.

Thanks. I will give more tries for CI's cache for msys2 to reduce CI times, and omit this dll size problem now.

[utzcoz]

Looks like we can set msys2 installation location to define cache directory for msys2 more easily. I will give a try.

[utzcoz]

Looks like we can set msys2 installation location to define cache directory for msys2 more easily. I will give a try.

Oh, it works, and Windows building time reduced to 3min from 20min. There are some clean-up needs to be done. I will clean up those scripts this weekend for final reviewing. :)

[utzcoz]

@hoisie I think it can be reviewed again. I have tested it with cache, and Windows cache works fine. The things to clean up cmake and CI jobs will be left for later PRs, if possible.

[utzcoz]

@hoisie I think it can be reviewed again. I have tested it with cache, and Windows cache works fine. The things to clean up cmake and CI jobs will be left for later PRs, if possible.

Hi @hoisie , could you help to review this PR again? I plan to merge it if there is no any important problem should be resolved. Thanks.

[utzcoz]

@hoisie Looks like self-runner encounters problem again.

[utzcoz]

https://github.com/robolectric/robolectric/runs/4704128816?check_suite_focus=true instrumentation-tests failed because of network problem to downloading gradle.