FAILURE: Build failed with an exception.

[afterlife77]

sudo briefcase create & sudo briefcase build complete successfully. Problem starts when I try to build for android . . .
sudo briefcase create android works but sudo briefcase build android throws exception;

[helloworld] Building Android APK...

> Task :app:externalNativeBuildDebug
Build native-lib_armeabi-v7a
ninja: no work to do.
Build native-lib_arm64-v8a
ninja: no work to do.
Build native-lib_x86
ninja: no work to do.
Build native-lib_x86_64
ninja: no work to do.

> Task :app:stripDebugDebugSymbols FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:stripDebugDebugSymbols'.
> No toolchains found in the NDK toolchains folder for ABI with prefix: arm-linux-androideabi

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s
27 actionable tasks: 2 executed, 25 up-to-date

When I run build without sudo;

[helloworld] Building Android APK...

FAILURE: Build failed with an exception.

* What went wrong:
Could not create service of type ScriptPluginFactory using BuildScopeServices.createScriptPluginFactory().
> Could not create service of type FileHasher using BuildSessionScopeServices.createFileSnapshotter().

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 0s

Error while building project.

Same with or without venv . . .

Also I messed a little with docker but I don't really know how to use it as when I try to run python or pip it says; command not found,and apt has none of those packages. Maybe that is the underlying issue.

Anyone?

[freakboy3742]

First off - you shouldn't need to use sudo at all. If you do, then there's a much bigger problem going on - which is may be the cause of the later errors you've provided. Briefcase should always be run as a user command, and should be able to succeed without any superuser permissions. If briefcase doesn't succeed, that is the first problem to fix. "Just use sudo" isn't a fix.

So - my first suggestion - start from scratch. Delete the tutorial folder and the ~/.briefcase folder, then start from scratch, without using sudo.

If that doesn't resolve things, and you get the same error - the error you're reporting means that NDK hasn't been downloaded. This should be downloaded automatically the first time an Android project is built; if it's not being found and it's not being downloaded, then there is some form of system corruption getting in the way.

The most likely possibility is that a pre-existing Android Studio install is getting in the way. Have you previously installed Android Studio? Are there any environment variables set (like ANDROID_HOME or ANDROID_SDK_ROOT)? If you remove these variables from the shell environment and re-run briefcase build android - does the build work?

If you haven't installed Android Studio, and a non-sudo build doesn't work, then we'll need to look elsewhere...

[afterlife77]

First off - you shouldn't need to use sudo at all. If you do, then there's a much bigger problem going on - which is may be the cause of the later errors you've provided. Briefcase should always be run as a user command, and should be able to succeed without any superuser permissions. If briefcase doesn't succeed, that is the first problem to fix. "Just use sudo" isn't a fix.

So - my first suggestion - start from scratch. Delete the tutorial folder and the ~/.briefcase folder, then start from scratch, without using sudo.

If that doesn't resolve things, and you get the same error - the error you're reporting means that NDK hasn't been downloaded. This should be downloaded automatically the first time an Android project is built; if it's not being found and it's not being downloaded, then there is some form of system corruption getting in the way.

The most likely possibility is that a pre-existing Android Studio install is getting in the way. Have you previously installed Android Studio? Are there any environment variables set (like ANDROID_HOME or ANDROID_SDK_ROOT)? If you remove these variables from the shell environment and re-run briefcase build android - does the build work?

If you haven't installed Android Studio, and a non-sudo build doesn't work, then we'll need to look elsewhere...

I removed ~/.briefcase and helloworld folder. I used unset ANDROID_HOME & unset ANDROID_SDK_ROOT so my /etc/environment contains only PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin".

briefcase build android & python3 -m briefcase build android still return the NDK toolchains exception.

python -m pip install briefcase returns

Command 'python' not found, did you mean:

  command 'python3' from deb python3
  command 'python' from deb python-is-python3

Originally occurred on kali linux, reproduced error on ubuntu 20.

Edit: I haven't installed toga with pip as I realized briefcase manages dependencies.

[freakboy3742]

If you're getting errors about python not working, that tells me you're missing some steps in the tutorial - most notably, you're probably not using a virtual environment.

However, that isn't causing the NDK problem you're reporting - I've now been able to resolve this problem; something has evidently changed in NDK, and the binary targets are now slightly different. If you had an old version of NDK downloaded (as I did), the project works; the current download doesn't work. I'll need to investigate further.

[freakboy3742]

See #607 for a formal bug report for this problem.