[bug] Cargo workspace breaks mobile bundler

[JonasKruckenberg]

Describe the bug

I recently started adding a top-level cargo workspace to all my Tauri apps, so that regular cargo commands work without annoying cd src-tauri.

This breaks the mobile bundler however as it apparently expects a hard-coded targetpath for the dylib.

Reproduction

1. Create a Tauri app that has mobile support (so through ppm crate vite and cargo tauri init)
2. Add a top level cargo workspace

   [workspace]
   members = ["src-tauri"]

3. See the error ld: warning: directory not found for option '-L/Users/jonaskruckenberg/Documents/GitHub/elk-desktop/src-tauri/target/aarch64-apple-ios-sim/debug' it is looking in the wrong path for the dylib

Expected behavior

The mobile bundler should use the cargo apis (cargo metadata maybe?) to figure out the correct target directory

Platform and versions

Environment
  › OS: Mac OS 13.0.1 X64
  › Node.js: 18.12.1
  › npm: 8.19.2
  › pnpm: 7.18.1
  › yarn: 1.22.19
  › rustup: 1.25.1
  › rustc: 1.65.0
  › cargo: 1.65.0
  › Rust toolchain: stable-aarch64-apple-darwin 

Packages
WARNING: no lock files found, defaulting to npm
  › @tauri-apps/cli [NPM]: 2.0.0-alpha.0
  › @tauri-apps/api [NPM]: Not installed!
  › tauri [RUST]: 2.0.0-alpha.1 (1.2.2, 2.0.0-alpha.1),
  › tauri-build [RUST]: 2.0.0-alpha.0,
  › tao [RUST]: 0.15.6,
  › wry [RUST]: 0.23.1,

App
  › build-type: bundle
  › CSP: style-src 'self'; media-src https:; connect-src https: wss:; font-src 'self'; default-src 'none'; img-src 'self' data: https:
  › distDir: ../elk/.output/public
  › devPath: http://localhost:5314/

App directory structure
  ├─ target
  ├─ elk
  ├─ .github
  ├─ src-tauri
  └─ .git

iOS
  › Teams: None

Stack trace

Ld /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Products/debug-iphonesimulator/app.app/app normal (in target 'app_iOS' from project 'app')
    cd /Users/jonaskruckenberg/Documents/GitHub/elk-desktop/src-tauri/gen/apple
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -target arm64-sim-apple-ios9.0-simulator -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator16.1.sdk -L/Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Intermediates.noindex/EagerLinkingTBDs -L/Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Products/debug-iphonesimulator -L/Users/jonaskruckenberg/Documents/GitHub/elk-desktop/src-tauri/target/aarch64-apple-ios-sim/debug -F/Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Intermediates.noindex/EagerLinkingTBDs -F/Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Products/debug-iphonesimulator -F. -filelist /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Intermediates.noindex/app.build/debug-iphonesimulator/app_iOS.build/Objects-normal/arm64-sim/app.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -dead_strip -Xlinker -object_path_lto -Xlinker /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Intermediates.noindex/app.build/debug-iphonesimulator/app_iOS.build/Objects-normal/arm64-sim/app_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -stdlib\=libc++ -fobjc-arc -fobjc-link-runtime -Xlinker -sectcreate -Xlinker __TEXT -Xlinker __entitlements -Xlinker /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Intermediates.noindex/app.build/debug-iphonesimulator/app_iOS.build/app.app-Simulated.xcent -Xlinker -sectcreate -Xlinker __TEXT -Xlinker __ents_der -Xlinker /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Intermediates.noindex/app.build/debug-iphonesimulator/app_iOS.build/app.app-Simulated.xcent.der -lapp -framework CoreGraphics -framework Metal -framework MetalKit -framework QuartzCore -framework Security -framework UIKit -framework WebKit -Xlinker -no_adhoc_codesign -Xlinker -dependency_info -Xlinker /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Intermediates.noindex/app.build/debug-iphonesimulator/app_iOS.build/Objects-normal/arm64-sim/app_dependency_info.dat -o /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Products/debug-iphonesimulator/app.app/app
ld: warning: directory not found for option '-L/Users/jonaskruckenberg/Documents/GitHub/elk-desktop/src-tauri/target/aarch64-apple-ios-sim/debug'
ld: library not found for -lapp
clang: error: linker command failed with exit code 1 (use -v to see invocation)

** BUILD FAILED **


The following build commands failed:
        Ld /Users/jonaskruckenberg/Library/Developer/Xcode/DerivedData/app-elzodwdekrmvyqaltibljffxgybm/Build/Products/debug-iphonesimulator/app.app/app normal (in target 'app_iOS' from project 'app')
(1 failure)
       Error Command "xcodebuild -scheme app_iOS -workspace /Users/jonaskruckenberg/Documents/GitHub/elk-desktop/src-tauri/gen/apple/app.xcodeproj/project.xcworkspace/ -sdk iphonesimulator -configuration debug -arch arm64-sim -allowProvisioningUpdates build" didn't complete successfully, exiting with code 65.

Additional context

No response

[FabianLars]

Same for the build.target-dir config btw

[lucasfernog]

The iOS usage was fixed by #5807 since we call the target detection used on desktop to move the artifacts to the Xcode project. I'll work on fixing it for Android.

[penx]

The iOS usage was fixed by #5807

@lucasfernog I'm getting "ld: library not found for -lapp" when running yarn tauri ios dev

This is a new project, using vite, following the guide today and with the following versions

rust@1.64
tauri@2.0.0-alpha.3
tauri-cli-ios@2.0.0-alpha.2
tauri-build@2.0.0-alpha.1
@tauri-apps/ap@2.0.0-alpha.0
@tauri-apps/cli@2.0.0-alpha.2

yarn add -D @tauri-apps/cli@next @tauri-apps/api@next
yarn tauri init
TAURI_APPLE_DEVELOPMENT_TEAM=XXX yarn tauri ios init
yarn tauri ios dev

(yarn tauri dev runs on macOS fine)

[lucasfernog]

Did you add the [lib] section in Cargo.toml?

[penx]

I guess I've missed some setup instructions? I've been following

• https://tauri.app/blog/2022/12/09/tauri-mobile-alpha
• https://tauri.app/v1/guides/getting-started/setup/integrate

I have the folllowing in lib, which was generated:

[lib]
name = "app_lib"
crate-type = ["staticlib", "cdylib", "rlib"]

And this issue was the only result for this error :)