build: Restore cross-compilation for Android #32262

1. 
   hebasto commented at 4:48 pm on April 13, 2025: member

   This PR restores cross-compilation for Android, which was temporarily removed in #30049.

   Marking as a draft for now, as CI integration still needs to be added.

   ---

   Note for Reviewers:

   1. Qt does not officially support static linking for Android. See:

   • https://bugreports.qt.io/browse/QTBUG-36097
   • https://bugreports.qt.io/browse/QTBUG-102326

   As a result, two patches have been applied:

   • qt/fix_android_jni_static.patch, which is essentially the same as the one introduced in #16110.
   • qt/fix_android_duplicate_symbol.patch, which is a new addition.

   2. For testing, please refer to the Android Build Guide.

   ---

   Closes #32254.

   Also see #29360.

2. build: Restore cross-compilation for Android

   This change partially reverts 5deb0b024e14c7c63d405c651d1ca323560a1c21
   and includes additional related adjustments.

   206cb5ead4
3. qt: Revert back Android icons

   This change is necessary for a subsequent commit and partially reverts
   commit 5deb0b024e14c7c63d405c651d1ca323560a1c21.

   33d817dd24
4. hebasto added the label Build system on Apr 13, 2025
5. hebasto added the label Android on Apr 13, 2025
6. 
   DrahtBot commented at 4:48 pm on April 13, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/32262.

   Reviews

   See the guideline for information on the review process. A summary of reviews will appear here.

   Conflicts

   Reviewers, this pull request conflicts with the following ones:

   • #31802 (Add bitcoin-{node,gui} to release binaries for IPC by Sjors)

   If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

7. 
   hebasto commented at 4:53 pm on April 13, 2025: member

   Seeking early feedback from Android connoisseurs.

   Friendly ping @icota :)

8. build: Add `apk_package` target for building Android APK b136afd990
9. doc: Update documentation for Android builds fec1a7029a
10. hebasto force-pushed on Apr 13, 2025
11. DrahtBot added the label CI failed on Apr 13, 2025
12. DrahtBot removed the label CI failed on Apr 13, 2025

Contributors
hebasto DrahtBot

Labels
Build system Android