question-mark
Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

buildozer failed clang++: error: linker command failed with exit code 1

See original GitHub issue

Versions

  • Python: 3.7.1
  • OS: Mac Mojave 10.14.2
  • Kivy: 1.10.1
  • Cython: 0.28.1

Description

I can’t build my kivy app for an apk targeting Android with the log as follows. I have few experience in debuging this, could someone pls help me with the root cause and solution?

buildozer.spec

Command:

buildozer android debug

Spec file:

[app]

# (str) Title of your application
title = My news

# (str) Package name
package.name = myapp

# (str) Package domain (needed for android/ios packaging)
package.domain = ruche.news

# (str) Source code where the main.py live
source.dir = .

# (list) Source files to include (let empty to include all the files)
source.include_exts = py,png,jpg,kv,atlas

# (list) List of inclusions using pattern matching
#source.include_patterns = assets/*,images/*.png

# (list) Source files to exclude (let empty to not exclude anything)
#source.exclude_exts = spec

# (list) List of directory to exclude (let empty to not exclude anything)
source.exclude_dirs = tests, bin, venv

# (list) List of exclusions using pattern matching
#source.exclude_patterns = license,images/*/*.jpg

# (str) Application versioning (method 1)
version = 0.1

# (str) Application versioning (method 2)
# version.regex = __version__ = ['"](.*)['"]
# version.filename = %(source.dir)s/main.py

# (list) Application requirements
# comma separated e.g. requirements = sqlite3,kivy
requirements = python3,kivy

# (str) Custom source folders for requirements
# Sets custom source for any requirements with recipes
# requirements.source.kivy = ../../kivy

# (list) Garden requirements
#garden_requirements =

# (str) Presplash of the application
#presplash.filename = %(source.dir)s/data/presplash.png

# (str) Icon of the application
#icon.filename = %(source.dir)s/data/icon.png

# (str) Supported orientation (one of landscape, sensorLandscape, portrait or all)
orientation = portrait

# (list) List of service to declare
#services = NAME:ENTRYPOINT_TO_PY,NAME2:ENTRYPOINT2_TO_PY

#
# OSX Specific
#

#
# author = © Copyright Info

# change the major version of python used by the app
osx.python_version = 3

# Kivy version to use
osx.kivy_version = 1.9.1

#
# Android specific
#

# (bool) Indicate if the application should be fullscreen or not
fullscreen = 1

# (string) Presplash background color (for new android toolchain)
# Supported formats are: #RRGGBB #AARRGGBB or one of the following names:
# red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray,
# darkgray, grey, lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy,
# olive, purple, silver, teal.
#android.presplash_color = #FFFFFF

# (list) Permissions
android.permissions = INTERNET

# (int) Target Android API, should be as high as possible.
#android.api = 27

# (int) Minimum API your APK will support.
#android.minapi = 21

# (int) Android SDK version to use
#android.sdk = 20

# (str) Android NDK version to use
#android.ndk = 17c

# (int) Android NDK API to use. This is the minimum API your app will support, it should usually match android.minapi.
#android.ndk_api = 21

# (bool) Use --private data storage (True) or --dir public storage (False)
#android.private_storage = True

# (str) Android NDK directory (if empty, it will be automatically downloaded.)
#android.ndk_path =

# (str) Android SDK directory (if empty, it will be automatically downloaded.)
#android.sdk_path =

# (str) ANT directory (if empty, it will be automatically downloaded.)
#android.ant_path =

# (bool) If True, then skip trying to update the Android sdk
# This can be useful to avoid excess Internet downloads or save time
# when an update is due and you just want to test/build your package
# android.skip_update = False

# (bool) If True, then automatically accept SDK license
# agreements. This is intended for automation only. If set to False,
# the default, you will be shown the license when first running
# buildozer.
# android.accept_sdk_license = False

# (str) Android entry point, default is ok for Kivy-based app
#android.entrypoint = org.renpy.android.PythonActivity

# (list) Pattern to whitelist for the whole project
#android.whitelist =

# (str) Path to a custom whitelist file
#android.whitelist_src =

# (str) Path to a custom blacklist file
#android.blacklist_src =

# (list) List of Java .jar files to add to the libs so that pyjnius can access
# their classes. Don't add jars that you do not need, since extra jars can slow
# down the build process. Allows wildcards matching, for example:
# OUYA-ODK/libs/*.jar
#android.add_jars = foo.jar,bar.jar,path/to/more/*.jar

# (list) List of Java files to add to the android project (can be java or a
# directory containing the files)
#android.add_src =

# (list) Android AAR archives to add (currently works only with sdl2_gradle
# bootstrap)
#android.add_aars =

# (list) Gradle dependencies to add (currently works only with sdl2_gradle
# bootstrap)
#android.gradle_dependencies =

# (list) Java classes to add as activities to the manifest.
#android.add_activites = com.example.ExampleActivity

# (str) python-for-android branch to use, defaults to master
#p4a.branch = master

# (str) OUYA Console category. Should be one of GAME or APP
# If you leave this blank, OUYA support will not be enabled
#android.ouya.category = GAME

# (str) Filename of OUYA Console icon. It must be a 732x412 png image.
#android.ouya.icon.filename = %(source.dir)s/data/ouya_icon.png

# (str) XML file to include as an intent filters in <activity> tag
#android.manifest.intent_filters =

# (str) launchMode to set for the main activity
#android.manifest.launch_mode = standard

# (list) Android additional libraries to copy into libs/armeabi
#android.add_libs_armeabi = libs/android/*.so
#android.add_libs_armeabi_v7a = libs/android-v7/*.so
#android.add_libs_x86 = libs/android-x86/*.so
#android.add_libs_mips = libs/android-mips/*.so

# (bool) Indicate whether the screen should stay on
# Don't forget to add the WAKE_LOCK permission if you set this to True
#android.wakelock = False

# (list) Android application meta-data to set (key=value format)
#android.meta_data =

# (list) Android library project to add (will be added in the
# project.properties automatically.)
#android.library_references =

# (str) Android logcat filters to use
#android.logcat_filters = *:S python:D

# (bool) Copy library instead of making a libpymodules.so
#android.copy_libs = 1

# (str) The Android arch to build for, choices: armeabi-v7a, arm64-v8a, x86
android.arch = armeabi-v7a

#
# Python for android (p4a) specific
#

# (str) python-for-android git clone directory (if empty, it will be automatically cloned from github)
#p4a.source_dir =

# (str) The directory in which python-for-android should look for your own build recipes (if any)
#p4a.local_recipes =

# (str) Filename to the hook for p4a
#p4a.hook =

# (str) Bootstrap to use for android builds
# p4a.bootstrap = sdl2

# (int) port number to specify an explicit --port= p4a argument (eg for bootstrap flask)
#p4a.port =


#
# iOS specific
#

# (str) Path to a custom kivy-ios folder
#ios.kivy_ios_dir = ../kivy-ios
# Alternately, specify the URL and branch of a git checkout:
ios.kivy_ios_url = https://github.com/kivy/kivy-ios
ios.kivy_ios_branch = master

# Another platform dependency: ios-deploy
# Uncomment to use a custom checkout
#ios.ios_deploy_dir = ../ios_deploy
# Or specify URL and branch
ios.ios_deploy_url = https://github.com/phonegap/ios-deploy
ios.ios_deploy_branch = 1.7.0

# (str) Name of the certificate to use for signing the debug version
# Get a list of available identities: buildozer ios list_identities
#ios.codesign.debug = "iPhone Developer: <lastname> <firstname> (<hexstring>)"

# (str) Name of the certificate to use for signing the release version
#ios.codesign.release = %(ios.codesign.debug)s


[buildozer]

# (int) Log level (0 = error only, 1 = info, 2 = debug (with command output))
log_level = 2

# (int) Display warning if buildozer is run as root (0 = False, 1 = True)
warn_on_root = 1

# (str) Path to build artifact storage, absolute or relative to spec file
# build_dir = ./.buildozer

# (str) Path to build output (i.e. .apk, .ipa) storage
# bin_dir = ./bin

#    -----------------------------------------------------------------------------
#    List as sections
#
#    You can define all the "list" as [section:key].
#    Each line will be considered as a option to the list.
#    Let's take [app] / source.exclude_patterns.
#    Instead of doing:
#
#[app]
#source.exclude_patterns = license,data/audio/*.wav,data/images/original/*
#
#    This can be translated into:
#
#[app:source.exclude_patterns]
#license
#data/audio/*.wav
#data/images/original/*
#


#    -----------------------------------------------------------------------------
#    Profiles
#
#    You can extend section / key with a profile
#    For example, you want to deploy a demo version of your application without
#    HD content. You could first change the title to add "(demo)" in the name
#    and extend the excluded directories to remove the HD content.
#
#[app@demo]
#title = My Application (demo)
#
#[app:source.exclude_patterns@demo]
#images/hd/*
#
#    Then, invoke the command line with the "demo" profile:
#
#buildozer --profile demo android debug

Logs

[log.txt](https://github.com/kivy/python-for-android/files/3100562/log.txt)

Issue Analytics

  • State:closed
  • Created 4 years ago
  • Comments:6 (1 by maintainers)

github_iconTop GitHub Comments

1reaction
AndreMirascommented, Apr 21, 2019

I don’t know about clang and OSX, but I think I saw some ongoing pull request trying to address some issues. Gives that one a try https://github.com/kivy/python-for-android/pull/1682

For reference I’m pasting here the end of the log that contains the relevant linking error:

[armeabi-v7a] Compile thumb  : main <= SDL_android_main.c
/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang -MMD -MP -MF /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/objs/main/__/__/SDL/src/main/android/SDL_android_main.o.d -gcc-toolchain /Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64 -fpic -ffunction-sections -funwind-tables -fstack-protector-strong -Wno-invalid-command-line-argument -Wno-unused-command-line-argument -no-canonical-prefixes -g -target armv7-none-linux-androideabi21 -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -mthumb -Os -DNDEBUG  -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/../../SDL/include -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/SDL/include -I/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/sources/cxx-stl/system/include -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src   -DANDROID -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/other_builds/python3-libffi-openssl-sqlite3/armeabi-v7a__ndk_target_21/python3/Include -D__ANDROID_API__=21 -Wa,--noexecstack -Wformat -Werror=format-security  --sysroot /Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/sysroot -isystem /Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/sysroot/usr/include/arm-linux-androideabi -c  /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/../../SDL/src/main/android/SDL_android_main.c -o /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/objs/main/__/__/SDL/src/main/android/SDL_android_main.o
[armeabi-v7a] Compile thumb  : main <= start.c
/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang -MMD -MP -MF /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/objs/main/start.o.d -gcc-toolchain /Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64 -fpic -ffunction-sections -funwind-tables -fstack-protector-strong -Wno-invalid-command-line-argument -Wno-unused-command-line-argument -no-canonical-prefixes -g -target armv7-none-linux-androideabi21 -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -mthumb -Os -DNDEBUG  -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/../../SDL/include -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/SDL/include -I/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/sources/cxx-stl/system/include -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src   -DANDROID -I/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/other_builds/python3-libffi-openssl-sqlite3/armeabi-v7a__ndk_target_21/python3/Include -D__ANDROID_API__=21 -Wa,--noexecstack -Wformat -Werror=format-security  --sysroot /Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/sysroot -isystem /Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/sysroot/usr/include/arm-linux-androideabi -c  /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c -o /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/objs/main/start.o
[armeabi-v7a] SharedLibrary  : libmain.so
/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ -Wl,-soname,libmain.so -shared --sysroot=/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/platforms/android-21/arch-arm /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/objs/main/__/__/SDL/src/main/android/SDL_android_main.o /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/objs/main/start.o -lgcc -Wl,--exclude-libs,libgcc.a -latomic -Wl,--exclude-libs,libatomic.a /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/libSDL2.so  -gcc-toolchain /Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64 -no-canonical-prefixes -target armv7-none-linux-androideabi21 -Wl,--fix-cortex-a8 -L/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/other_builds/python3-libffi-openssl-sqlite3/armeabi-v7a__ndk_target_21/python3/android-build -Wl,--build-id -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--warn-shared-textrel -Wl,--fatal-warnings   -L/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/platforms/android-21/arch-arm/usr/lib -lGLESv1_CM -lGLESv2 -llog -lpython3.7m -lstdc++ -lc -lm -o /Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/libmain.so
/Users/vucheqh/.buildozer/android/platform/android-ndk-r17c/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lpython3.7m
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:51: error: undefined reference to 'PyModule_Create2'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:158: error: undefined reference to 'Py_SetProgramName'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:164: error: undefined reference to 'PyImport_AppendInittab'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:197: error: undefined reference to 'Py_DecodeLocale'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:198: error: undefined reference to 'Py_SetPath'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:209: error: undefined reference to 'Py_Initialize'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:226: error: undefined reference to 'PyEval_InitThreads'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:232: error: undefined reference to 'PyRun_SimpleStringFlags'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:238: error: undefined reference to 'PyRun_SimpleStringFlags'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:244: error: undefined reference to 'PyRun_SimpleStringFlags'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:260: error: undefined reference to 'PyRun_SimpleStringFlags'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:370: error: undefined reference to 'PyRun_SimpleFileExFlags'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:373: error: undefined reference to 'PyErr_Occurred'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:375: error: undefined reference to 'PyErr_Print'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:376: error: undefined reference to 'PySys_GetObject'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:377: error: undefined reference to 'PyFile_WriteString'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:379: error: undefined reference to 'PyErr_Clear'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:406: error: undefined reference to 'Py_FinalizeEx'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:35: error: undefined reference to '_PyArg_ParseTuple_SizeT'
/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/jni/application/src/start.c:0: error: undefined reference to '_Py_NoneStruct'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build/build/bootstrap_builds/sdl2-python3/obj/local/armeabi-v7a/libmain.so] Error 1


  STDERR:

# Command failed: /Users/vucheqh/.pyenv/versions/3.7.1/bin/python3.7 -m pythonforandroid.toolchain create --dist_name=myapp --bootstrap=sdl2 --requirements=python3,kivy --arch armeabi-v7a --copy-libs --color=always --storage-dir="/Users/vucheqh/PycharmProjects/news/.buildozer/android/platform/build" --ndk-api=21
#
# Buildozer failed to execute the last command
# The error might be hidden in the log above this error
# Please read the full log, and search for it before
# raising an issue with buildozer itself.
# In case of a bug report, please add a full log with log_level = 2
0reactions
hoangvuchecommented, May 2, 2019

Hi @JonasT It is a bad news that I got the same error even after applying NDK version r17c.

Read more comments on GitHub >

github_iconTop Results From Across the Web

Building apk for Kivy project w/buildozer (clang++: error
I'm not able to debug my project with Buildozer and end up with this error: clang++: error: linker command failed with exit code...
Read more >
clang: error: linker command faile… | Apple Developer Forums
The error I get is: clang: error: linker command failed with exit code 1 (use -v to see invocation). How should I go...
Read more >
Buildozer Error - Google Groups
Consider installing lld if linker errors occur. clang++: error: linker command failed with exit code 1 (use -v to see invocation).
Read more >
iOS : Xcode 5- clang: error: linker command failed with exit ...
iOS : Xcode 5- clang : error : linker command failed with exit code 1 (use -v to see invocation) [ Beautify Your...
Read more >
Android NDK r23 build problem - Syncthing Forum
ld: error: cannot open output file $WORK\b083\_cgo_.o: Function not implemented clang: error: linker command failed with exit code 1 (use -v ...
Read more >

github_iconTop Related Medium Post

No results found

github_iconTop Related StackOverflow Question

No results found

github_iconTroubleshoot Live Code

Lightrun enables developers to add logs, metrics and snapshots to live code - no restarts or redeploys required.
Start Free

github_iconTop Related Reddit Thread

No results found

github_iconTop Related Hackernoon Post

No results found

github_iconTop Related Tweet

No results found

github_iconTop Related Dev.to Post

No results found

github_iconTop Related Hashnode Post

No results found