Buildozer crash about C99 compatibility

[Alan Etkin]

Hi

I'm trying to build the apk with buildozer, but I get this error

In file included from /home/alan/Pruebas/qrconquista/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Modules/_remote_debugging_module.c:31:
/home/alan/Pruebas/qrconquista/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Modules/../Python/remote_debug.h:886:15: error: implicit declaration of function 'search_linux_map_for_section' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    address = search_linux_map_for_section(handle, "PyRuntime", "python");
              ^
/home/alan/Pruebas/qrconquista/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Modules/_remote_debugging_module.c:814:15: error: implicit declaration of function 'search_linux_map_for_section' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    address = search_linux_map_for_section(handle, "AsyncioDebug", "_asyncio.cpython");
              ^
2 errors generated.
make: *** [Makefile:3563: Modules/_remote_debugging_module.o] Error 1

I'm working with an app project that reads QRs with opencv and decodes them with zbar. I tried to apply a patch that solves the syntax issue in the C file, but I think it gets overwritten on each call to buildozer android debug.

The issue about C99 is posted at

https://askubuntu.com/questions/1559280/buildozer-fails-ubuntu-25-10

And points to a patch in C-Python

Any hints on what should I check to get the .apk built?

I'm running kivy and buildozer over a python venv on Ubuntu 24.04 amd processor PC

Thanks

Alan

[KXJ YEG]

Hi,

I ran into patch issue with Java source code once.

Sometimes manually copying the right source file in the right location helps.

See around 4:49 here:

 https://youtu.be/Wl4lPofgWR4?si=h1w8WVBiiMTMk8rQ

Once I managed to build the apk, I used apktool to inspect the apk to confirm if it had the right components.

02:17 here:

https://youtu.be/Wl4lPofgWR4?si=h1w8WVBiiMTMk8rQ

Hope this helps. You're probably dealing with a .h file and the mechanism might differ re: compilation.

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[Alan Etkin]

Very useful

I can't tell if the command used by the guy from the video (buildozer -v...) was the key but I managed to build the .apk file. The news is that the app crashes once it is deployed in a device, but that's another story

Thank you!

BTW: I can't find in buildozer docs what is the -v option used for

[KXJ YEG]

Thanks.

BTW, those are videos I created :) if you found them useful it'd be nice to have you as a Subscriber.

For your apk crash, I recommend a venv that helps minimize crashes:

https://youtu.be/D79BtZQSH2A?si=a9h1PVa5c0McZ6FB

Thanks

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