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kiwisolver error ld: error: undefined symbol: main #3122

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shivaraj-arch opened this issue Mar 7, 2025 · 5 comments · May be fixed by #3124
Open

kiwisolver error ld: error: undefined symbol: main #3122

shivaraj-arch opened this issue Mar 7, 2025 · 5 comments · May be fixed by #3124
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@shivaraj-arch
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shivaraj-arch commented Mar 7, 2025 •
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OS : mac
command: buildozer -v android debug
buildozer.spec : p4a.branch = develop

Can someone point why is this ld error caused while building 'kiwisolver._cext' extension

kiwisolver.error.txt

[DEBUG]: /Users/.buildozer/android/platform/android-ndk-r25b/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ -target aarch64-linux-android24 -fomit-frame-pointer -march=armv8-a -fPIC -target aarch64-linux-android24 -fomit-frame-pointer -march=armv8-a -fPIC -I/Users/workspace/stocks/android/matplotlibapp/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/python3/arm64-v8a__ndk_target_24/python3/Include -bundle -undefined dynamic_lookup -L/Users/workspace/stocks/android/matplotlibapp/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/libs_collections/matplotlibapp/arm64-v8a -L/Users/workspace/stocks/android/matplotlibapp/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/python3/arm64-v8a__ndk_target_24/python3/android-build -lpython3.11 -target aarch64-linux-android24 -fomit-frame-pointer -march=armv8-a -fPIC -I/Users/workspace/stocks/android/matplotlibapp/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/python3/arm64-v8a__ndk_target_24/python3/Include build/temp.macosx-15.3-arm64-cpython-311/py/src/constraint.o build/temp.macosx-15.3-arm64-cpython-311/py/src/expression.o build/temp.macosx-15.3-arm64-cpython-311/py/src/kiwisolver.o build/temp.macosx-15.3-arm64-cpython-311/py/src/solver.o build/temp.macosx-15.3-arm64-cpython-311/py/src/strength.o build/temp.macosx-15.3-arm64-cpython-311/py/src/term.o build/temp.macosx-15.3-arm64-cpython-311/py/src/variable.o -o build/lib.macosx-15.3-arm64-cpython-311/kiwisolver/_cext.cpython-311-darwin.so -stdlib=libc++

[DEBUG]: clang-14: warning: argument unused during compilation: '-bundle' [-Wunused-command-line-argument]
[DEBUG]: clang-14: warning: argument unused during compilation: '-undefined dynamic_lookup' [-Wunused-command-line-argument]
[DEBUG]: ld: error: undefined symbol: main
[DEBUG]: >>> referenced by crtbegin.c
@AndreMiras AndreMiras transferred this issue from kivy/buildozer Mar 7, 2025
@AndreMiras
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Did you get this working in the past or is it the first time you're trying?
I'm asking because we made a recent kiwisolver recipe update.
You can verify if this is a regression from #3118 by pointing p4a.commit to the commit before the merge. Start from clean build.
If it's a recent regression then the fix is simple.

@T-Dynamos
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That's same error macos runner is having in github right now.

@shivaraj-arch
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shivaraj-arch commented Mar 7, 2025 •
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Did you get this working in the past or is it the first time you're trying? I'm asking because we made a recent kiwisolver recipe update. You can verify if this is a regression from #3118 by pointing p4a.commit to the commit before the merge. Start from clean build. If it's a recent regression then the fix is simple.

if __init__.py is replaced, old error resurfaces - Python.h not found.
tried setting env flags but seems its not finding it. should we set them in another file?

@RobertFlatt
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RobertFlatt commented Mar 11, 2025 •
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@T-Dynamos

I think the recipe should have += not = here:

        env["CFLAGS"] = flags
        env["CPPFLAGS"] = flags

Because the log error is due to trying to create an executable, so some compiler flags are wrong. And other recipes use += in this case.

RobertFlatt added a commit to RobertFlatt/python-for-android that referenced this issue Mar 12, 2025
@RobertFlatt
Update __init__.py
85d9d23 
Bump version,  change depends to hostpython_prerequisites.
Fix kivy#3122
@RobertFlatt RobertFlatt linked a pull request Mar 12, 2025 that will close this issue
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@RobertFlatt
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I tried adding the above fix to a very loosely related PR #3124
It did not fix the issue.

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Reinstate cppy recipe and update 3 related recipes. RobertFlatt/python-for-android
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@AndreMiras @kuzeyron @shivaraj-arch @RobertFlatt @T-Dynamos