libffi VS kivy-ios

Ok, there is a missing dependency, libffi6, which cannot be installed, because it isn't at repos. You can either install it via downloading from other repos (there is a chance in the debian repo), or via compiling on your own (you can start with paying a visit to official site: https://sourceware.org/libffi/). Either way, move carefully and never forget when a dependency is missing, it may be a start of a "missing dependencies hell". And please, be caution, because you can break your system quite easily.

I've been working in implementing libffi into Euphoria so we can call Raylib functions directly. Previously, Euphoria did not support passing structures by value and only occasionally could we get away with "faking" it by passing int type values directly (but not float types). Raylib is the first library I've run into that makes heavy use of passing structures by value, so it's been an interesting challenge. My original proof of concept worked well with libffi built as a shared library, so now I'm working on building libffi directly into the backend of Euphoria. Then we'll be off and running with full support for Raylib!

I did some more looking around, and I think you should take a look into libffi. It has most of the dirty work done for you, and you can hook it up with your language.

The last line of output is from configure and appears to be during building of libffi recipe - apparently executing the generate-darwin-source-and-headers.py from libffi repository

ok... I did my python 3.9 upgrade on my Rpi3b+ ... here's what I learned: 1) If you're running Debian Buster, you really probably want to upgrade to Bullseye first https://www.tomshardware.com/how-to/upgrade-raspberry-pi-os-to-bullseye-from-buster If you stay on buster, then homeassistant won't start until you build libffi-3.3 as below: 2021-12-29 16:51:14 ERROR (MainThread) [homeassistant.auth.providers] Unable to load auth provider homeassistant: libffi.so.7: cannot open shared object file: No such file or directory https://community.home-assistant.io/t/python-install-on-raspberry-pi-os/241558/12 wget "https://github.com/libffi/libffi/releases/download/v3.3/libffi-3.3.tar.gz" tar zxf libffi-3.3.tar.gz cd libffi-3.3 ./configure sudo make install sudo ldconfig Other than that, it was pretty straightforward. Do be aware that after you redeploy home assistant, a LOT of stuff is happening in the background and it will take a while before everything comes up. Don't freak out. Don't reboot or power cycle. Instead, do this: tail -f /var/log/homeassistant/home-assistant.log and watch the updates

build-essential installs everything required for compiling basic software written in C and C++ in this case Python. Read more... zlib1g-devis the development package of the compression library that implements the deflate compression methods and essential in Python's installation and other installations as well. Read more... libncurses5-dev is the development package for the curses library that provides a terminal-independent screen-painting and keyboard-handling tool. Read more... libgdbm-dev is a development library for GDBM whose functionality is to store key/data pairs in a data file. Read more... libnss3-dev Read more... libssl-dev Read more... libreadline-dev Read more... libffi-dev Read more... libsqlite3-dev Read more... wget Read more... libbz2-dev Read more... In the next step we can either manually download the latest release of Python from the Python Official Release page or use wget which we have installed in previous command. To download using wget, paste the following command in the terminal to download Python in the computer.

[INFO]: -> running basename https://github.com/libffi/libffi/archive/v3.3.tar.gz

libffi C library

If you have read my earlier posts you know I love multilingual programming. One important part of multilingual programming is how to interface one language with other. Typically this is called FFI or foreign function interface. At the lowest level often there are libraries (aka bindings) to talk across languages or across implementations of same language e.g. libffi. In my undergrad we did a group project where we created language bindings to separate algorithmic part written in python and opencv and X11 logic in c.

Each project has documentation to install and get started, for example see the ios build toolchain (which makes .IPA package from your Kivy application): https://github.com/kivy/kivy-ios - once you are set up with a project, use "toolchain pip install kivymd" to add the kivymd library (for Android this step is slightly different, you add kivymd to "requirements")

Hi, I am building a mobile app with Kivy. Right now, I am trying to compile the app for iOS devices. To build Kivy and install other necessary libraries, I need to use the Kivy toolchain (https://github.com/kivy/kivy-ios). One of the libraries my project uses is bcrypt. When I try to compile the app on an iPhone emulator, I get this error log (https://gist.github.com/JanBartos6/ddd0e13f9fc5ca7c7fabff04cdc259be). The error is probably caused by using bcrypt as a dynamic library. So my question is: Is there a way to build a static Python library with pip or even better with the Kivy toolchain?

Hello, I'm attempting to build Kivy on my m1 Mac, but every time I execute the toolchain build command, I get the following problem. I attempted to follow the official GitHub instructions (https://github.com/kivy/kivy-ios), the official Kivy documentation (https://kivy.org/doc/stable/guide/packaging-ios.html), and other YouTube tutorials (for example https://youtu.be/6gLGyrlgqCU), but they all had the same outcome.

[app] # (str) Title of your application title = My Gps # (str) Package name package.name = gpsapp # (str) Package domain (needed for android/ios packaging) package.domain = org.test # (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,txt # (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 # Do not prefix with './' #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,mapview,plyer,requests,android,configs,pyjnius,psycopg2,pymysql,jnius,https://github.com/HyTurtle/plyer/archive/master.zip # (str) Custom source folders for requirements # Sets custom source for any requirements with recipes # requirements.source.kivy = ../../kivy # (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 # (list) Supported orientations # Valid options are: landscape, portrait, portrait-reverse or landscape-reverse orientation = portrait # (list) List of service to declare #services = NAME:ENTRYPOINT_TO_PY,NAME2:ENTRYPOINT2_TO_PY services = Myservice:service.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 = 0 # (string) Presplash background color (for 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 # (string) Presplash animation using Lottie format. # see https://lottiefiles.com/ for examples and https://airbnb.design/lottie/ # for general documentation. # Lottie files can be created using various tools, like Adobe After Effect or Synfig. #android.presplash_lottie = "path/to/lottie/file.json" # (str) Adaptive icon of the application (used if Android API level is 26+ at runtime) #icon.adaptive_foreground.filename = %(source.dir)s/data/icon_fg.png #icon.adaptive_background.filename = %(source.dir)s/data/icon_bg.png # (list) Permissions # (See https://python-for-android.readthedocs.io/en/latest/buildoptions/#build-options-1 for all the supported syntaxes and properties) android.permissions = android.permission.INTERNET, (name=android.permission.WRITE_EXTERNAL_STORAGE;maxSdkVersion=18), ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION # (list) features (adds uses-feature -tags to manifest) #android.features = android.hardware.usb.host # (int) Target Android API, should be as high as possible. #android.api = 31 # (int) Minimum API your APK / AAB will support. #android.minapi = 21 # (int) Android SDK version to use #android.sdk = 20 # (str) Android NDK version to use #android.ndk = 23b # (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.kivy.android.PythonActivity # (str) Full name including package path of the Java class that implements Android Activity # use that parameter together with android.entrypoint to set custom Java class instead of PythonActivity #android.activity_class_name = org.kivy.android.PythonActivity # (str) Extra xml to write directly inside the element of AndroidManifest.xml # use that parameter to provide a filename from where to load your custom XML code #android.extra_manifest_xml = ./src/android/extra_manifest.xml # (str) Extra xml to write directly inside the tag of AndroidManifest.xml # use that parameter to provide a filename from where to load your custom XML arguments: #android.extra_manifest_application_arguments = ./src/android/extra_manifest_application_arguments.xml # (str) Full name including package path of the Java class that implements Python Service # use that parameter to set custom Java class which extends PythonService #android.service_class_name = org.kivy.android.PythonService # (str) Android app theme, default is ok for Kivy-based app # android.apptheme = "@android:style/Theme.NoTitleBar" # (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 #android.add_aars = # (list) Put these files or directories in the apk assets directory. # Either form may be used, and assets need not be in 'source.include_exts'. # 1) android.add_assets = source_asset_relative_path # 2) android.add_assets = source_asset_path:destination_asset_relative_path #android.add_assets = # (list) Put these files or directories in the apk res directory. # The option may be used in three ways, the value may contain one or zero ':' # Some examples: # 1) A file to add to resources, legal resource names contain ['a-z','0-9','_'] # android.add_resources = my_icons/all-inclusive.png:drawable/all_inclusive.png # 2) A directory, here 'legal_icons' must contain resources of one kind # android.add_resources = legal_icons:drawable # 3) A directory, here 'legal_resources' must contain one or more directories, # each of a resource kind: drawable, xml, etc... # android.add_resources = legal_resources #android.add_resources = # (list) Gradle dependencies to add #android.gradle_dependencies = # (bool) Enable AndroidX support. Enable when 'android.gradle_dependencies' # contains an 'androidx' package, or any package from Kotlin source. # android.enable_androidx requires android.api >= 28 #android.enable_androidx = True # (list) add java compile options # this can for example be necessary when importing certain java libraries using the 'android.gradle_dependencies' option # see https://developer.android.com/studio/write/java8-support for further information # android.add_compile_options = "sourceCompatibility = 1.8", "targetCompatibility = 1.8" # (list) Gradle repositories to add {can be necessary for some android.gradle_dependencies} # please enclose in double quotes # e.g. android.gradle_repositories = "maven { url 'https://kotlin.bintray.com/ktor' }" #android.add_gradle_repositories = # (list) packaging options to add # see https://google.github.io/android-gradle-dsl/current/com.android.build.gradle.internal.dsl.PackagingOptions.html # can be necessary to solve conflicts in gradle_dependencies # please enclose in double quotes # e.g. android.add_packaging_options = "exclude 'META-INF/common.kotlin_module'", "exclude 'META-INF/*.kotlin_module'" #android.add_packaging_options = # (list) Java classes to add as activities to the manifest. #android.add_activities = com.example.ExampleActivity # (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 tag #android.manifest.intent_filters = # (list) Copy these files to src/main/res/xml/ (used for example with intent-filters) #android.res_xml = PATH_TO_FILE, # (str) launchMode to set for the main activity #android.manifest.launch_mode = standard # (str) screenOrientation to set for the main activity. # Valid values can be found at https://developer.android.com/guide/topics/manifest/activity-element #android.manifest.orientation = fullSensor # (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_arm64_v8a = libs/android-v8/*.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 = # (list) Android shared libraries which will be added to AndroidManifest.xml using tag #android.uses_library = # (str) Android logcat filters to use android.logcat_filters = *:S python:D # (bool) Android logcat only display log for activity's pid #android.logcat_pid_only = False # (str) Android additional adb arguments #android.adb_args = -H host.docker.internal # (bool) Copy library instead of making a libpymodules.so #android.copy_libs = 1 # (list) The Android archs to build for, choices: armeabi-v7a, arm64-v8a, x86, x86_64 # In past, was `android.arch` as we weren't supporting builds for multiple archs at the same time. android.archs = arm64-v8a, armeabi-v7a # (int) overrides automatic versionCode computation (used in build.gradle) # this is not the same as app version and should only be edited if you know what you're doing # android.numeric_version = 1 # (bool) enables Android auto backup feature (Android API >=23) android.allow_backup = True # (str) XML file for custom backup rules (see official auto backup documentation) # android.backup_rules = # (str) If you need to insert variables into your AndroidManifest.xml file, # you can do so with the manifestPlaceholders property. # This property takes a map of key-value pairs. (via a string) # Usage example : android.manifest_placeholders = [myCustomUrl:\"org.kivy.customurl\"] # android.manifest_placeholders = [:] # (bool) Skip byte compile for .py files # android.no-byte-compile-python = False # (str) The format used to package the app for release mode (aab or apk or aar). # android.release_artifact = aab # (str) The format used to package the app for debug mode (apk or aar). # android.debug_artifact = apk android.add_apk_parts = sl4a # # Python for android (p4a) specific # # (str) python-for-android URL to use for checkout #p4a.url = # (str) python-for-android fork to use in case if p4a.url is not specified, defaults to upstream (kivy) #p4a.fork = kivy # (str) python-for-android branch to use, defaults to master #p4a.branch = master # (str) python-for-android specific commit to use, defaults to HEAD, must be within p4a.branch #p4a.commit = HEAD # (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 = # Control passing the --use-setup-py vs --ignore-setup-py to p4a # "in the future" --use-setup-py is going to be the default behaviour in p4a, right now it is not # Setting this to false will pass --ignore-setup-py, true will pass --use-setup-py # NOTE: this is general setuptools integration, having pyproject.toml is enough, no need to generate # setup.py if you're using Poetry, but you need to add "toml" to source.include_exts. #p4a.setup_py = false # (str) extra command line arguments to pass when invoking pythonforandroid.toolchain #p4a.extra_args = # # 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 = 1.10.0 # (bool) Whether or not to sign the code ios.codesign.allowed = false # (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: ()" # (str) The development team to use for signing the debug version #ios.codesign.development_team.debug = # (str) Name of the certificate to use for signing the release version #ios.codesign.release = %(ios.codesign.debug)s # (str) The development team to use for signing the release version #ios.codesign.development_team.release = # (str) URL pointing to .ipa file to be installed # This option should be defined along with `display_image_url` and `full_size_image_url` options. #ios.manifest.app_url = # (str) URL pointing to an icon (57x57px) to be displayed during download # This option should be defined along with `app_url` and `full_size_image_url` options. #ios.manifest.display_image_url = # (str) URL pointing to a large icon (512x512px) to be used by iTunes # This option should be defined along with `app_url` and `display_image_url` options. #ios.manifest.full_size_image_url = [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, .aab, .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

See https://github.com/kivy/kivy-ios/issues/701

I don't know how the kivy-ios toolchain works these days, but there is a libpng recipe included, I would start with ensuring that your package uses it (no idea how sorry).

Are you perhaps using Kivy? This thread seems relevant: https://github.com/kivy/kivy-ios/issues/644. In particular, see this comment.

Build recipes are used to compile libraries for use on mobile platforms, see kivy-ios recipes directory and the corresponding python-for-android recipes directory. The quality varies here, some recipes may use outdated versions or provide limited library functionality. If you develop on Windows, you can install and use pretty much any Python package, but on mobile platforms, you are limited to those that are either 100% pure python, or have a build recipe.

ios.kivy_ios_url = https://github.com/kivy/kivy-ios

Unfortunately there is no OpenCV recipe for iOS yet, there is an issue for tracking this task here: https://github.com/kivy/kivy-ios/issues/663