Files
react-native/ReactCommon/react/renderer/components/scrollview
Igor Klemenski c37d49492b Work around max path length during source build of RN Android (#30776)
Summary:
Building ReactAndroid from source on Windows has recently hit the limitation of maximum path lengths.
At build time, during the `:ReactAndroid:buildReactNdkLib` task, the linker tries to access several of the intermediate binaries located deep in the tmp folder hierarchy, eg.
```
D:\r\ReactAndroid\build\tmp\buildReactNdkLib/local/armeabi-v7a/objs/react_render_components_progressbar/D_/r/ReactAndroid/__/ReactCommon/react/renderer/components/progressbar/android/react/renderer/components/progressbar/AndroidProgressBarMeasurementsManager.o
```
**Suggested fix:** for modules such as `react_render_components_progressbar` and `react_render_components_picker`, rename them to `rrc_progressbar` etc.

**NOTE**: this assumes that the fix from https://github.com/facebook/react-native/issues/30535 is in place. This regression happened while https://github.com/facebook/react-native/issues/30535 has been pending checkin.

**Other mitigations I've tried:**
- setting [`LOCAL_SHORT_COMMANDS`](https://developer.android.com/ndk/guides/android_mk#local_short_commands) for the problematic modules or `APP_SHORT_COMMANDS` for the root project. Turns out those commands don't work on the NDK version RN requires, but even after manually applying a [patch ](https://android-review.googlesource.com/c/platform/ndk/+/1126440) to my local copy of the NDK, these flags had no effect.
- moving the repo directory higher in the file system tree, and using short directory names `D:\r\...` was not enough
- creating virtual drive letters for specific long paths with the [`sust`](https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/subst#examples) command is not workable, since they depend on the source folder structure, and get partly generated by the build system, which I can't plug into
- just enabling long path support on Windows is not enough, since the compiler toolchain doesn't support them.
## Changelog

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[Android] [Fixed] - Fix source build on Windows machines vol. 2

Pull Request resolved: https://github.com/facebook/react-native/pull/30776

Test Plan:
Run `.\gradlew installArchives`

Before:
![image](https://user-images.githubusercontent.com/12816515/105435667-a1e15d00-5c12-11eb-9fcd-d0c278aaf477.png)
Now:
![image](https://user-images.githubusercontent.com/12816515/105435741-c2a9b280-5c12-11eb-88d5-a69ae56bbf50.png)

Differential Revision: D26194286

Pulled By: mdvacca

fbshipit-source-id: 778b5a0515148e2ace19e7902f74301831ebed94
2021-02-11 12:32:33 -08:00
..