Can't build and run the ios-example-app in xcode due to readonly file asn1rt_nif.so

[adiibanez]

The file elixir-app/_build/ios_prod/rel/default_release/lib/asn1-5.3.1/priv/lib/asn1rt_nif.so always ends up with read permissions only at xcodebuild time no matter what I try. Where does the library come from?

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip: file: /Users/adrianibanez/Documents/projects/2024_sensor-platform/checkouts/elixir-desktop-ios-example-app/elixir-app/_build/ios_prod/rel/default_release/lib/asn1-5.3.1/priv/lib/asn1rt_nif.so is not writable (Permission denied)

19:28:21.198 [warning] There is no package config defined. Using the generic Elixir App descriptions.
Running: /Users/adrianibanez/Documents/projects/2024_sensor-platform/checkouts/elixir-desktop-ios-example-app/elixir-app/_build/ios_prod/rel/default_release/erts-15.2.2/bin/erlexec -emu_name_exit
Running: strip -x -S /Users/adrianibanez/Documents/projects/2024_sensor-platform/checkouts/elixir-desktop-ios-example-app/elixir-app/_build/ios_prod/rel/default_release/erts-15.2.2/bin/beam.smp
Running: strip -x -S /Users/adrianibanez/Documents/projects/2024_sensor-platform/checkouts/elixir-desktop-ios-example-app/elixir-app/_build/ios_prod/rel/default_release/lib/asn1-5.3.1/priv/lib/asn1rt_nif.so
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip: file: /Users/adrianibanez/Documents/projects/2024_sensor-platform/checkouts/elixir-desktop-ios-example-app/elixir-app/_build/ios_prod/rel/default_release/lib/asn1-5.3.1/priv/lib/asn1rt_nif.so is not writable (Permission denied)
** (MatchError) no match of right hand side value: {"", 1}
(desktop_deployment 1.0.0) lib/tooling.ex:124: Desktop.Deployment.Tooling.cmd!/2
(desktop_deployment 1.0.0) lib/tooling.ex:80: Desktop.Deployment.Tooling.strip_symbols/1
(desktop_deployment 1.0.0) lib/package/macos.ex:12: anonymous fn/2 in Desktop.Deployment.Package.MacOS.import_extra_files/1
(elixir 1.18.2) lib/enum.ex:2546: Enum."-reduce/3-lists^foldl/2-0-"/3
(desktop_deployment 1.0.0) lib/package/macos.ex:12: Desktop.Deployment.Package.MacOS.import_extra_files/1
(desktop_deployment 1.0.0) lib/deployment.ex:36: Desktop.Deployment.generate_installer/1
(mix 1.18.2) lib/mix/tasks/release.ex:1079: Mix.Tasks.Release.run_steps/1
(mix 1.18.2) lib/mix/task.ex:495: anonymous fn/3 in Mix.Task.run_task/5

** BUILD FAILED **

The following build commands failed:
PhaseScriptExecution Run\ Script /Users/adrianibanez/Documents/projects/2024_sensor-platform/checkouts/elixir-desktop-ios-example-app/build/todoapp.build/Release-iphoneos/todoapp.build/Script-EC8A1FD6270B4EF900054F1C.sh (in target 'todoapp' from project 'todoapp')
(1 failure)
adrianibanez@Adrians-MacBook-Pro elixir-desktop-ios-example-app % ls -lah elixir-app/_build/ios_prod/rel/default_release/lib/asn1-5.3.1/priv/lib/asn1rt_nif.so
-r--r--r-- 1 adrianibanez staff 51K 26 Feb 19:28 elixir-app/_build/ios_prod/rel/default_release/lib/asn1-5.3.1/priv/lib/asn1rt_nif.so

[dominicletz]

There is a mixup here in the ios-example-app with the desktop_installer. The desktop_installer is responsible for creating the .exe/.dmg style installers for Windows, Linux, MacOS but it shouldn't be used for the Android and iOS builds. The ios-example-app I believe is not calling into it but rather using the run_mix and has probably a "mobile" target.

That said I think the obvious way to simplify this would be to make the desktop_installer aware of the MIX_TARGET=ios/android targets and then do the "right" thing instead of running the normal macos functions which break your build here.

[dominicletz]

To be more specific strip from your error output should never be called. This is only needed when packaging the runtime for desktop environments - for mobile environments all needed native binaries are already in the xcode/android studio project.

[adiibanez]

I got rid of the error by disabling stripping temporarily.

The only elixir / desktop related command included in run_mix is

mix release --overwrite

somehow the desktop_installer is invoked too nevertheless. any specific configuration required? Resp. where is the desktop specific processing triggered?

[dominicletz]

mix release will trigger the desktop installer if that is hooked in your release target as one of the steps.