swift-build error: ExitCode(rawValue: 1) when executing ``swift-build`` from ``core`` folder

[pedrovgs]

Hi! I'm trying to build the core module manually but I always get the same error:

$ swift-build                                                                                                     ‹ruby-2.7.2›
/Users/pedro/Development/Projects/swift-weather-app/core: error: manifest parse error(s):
/Users/pedro/Development/Projects/swift-weather-app/core/Package.swift:2:8: error: no such module 'PackageDescription'
import PackageDescription
       ^
error: ExitCode(rawValue: 1)
[0/1] Planning buildwarning: failed to load the cached build description: fatalError
/Users/pedro/Development/Projects/swift-weather-app/core: error: manifest parse error(s):
/Users/pedro/Development/Projects/swift-weather-app/core/Package.swift:2:8: error: no such module 'PackageDescription'
import PackageDescription
       ^

I've followed the swift-android-toolchain README.md instructions and configured all the requested dependencies but I'm not able to build any swift package, not even with a simple HelloWorld.swift file inside. However, I can build and run the Android app from the android folder using Android Studio or my terminal as expected.

I'd love to be able to build the iOS package manually and link the .so libraries generated manually. Could you please help me and check whats going on?

Here you have some information in case you need it:

• OS version: BigSour 11.5.2
• Swift version: Apple Swift version 5.4.2 (swift-5.4.2-RELEASE). Target: x86_64-apple-darwin20.6.0
• Java version: OpenJDK Runtime Environment (build 1.8.0_292-b10)
• NDK_ROOT env var: ~/android/android-ndk-r21e
• ANDROID_NDK env var: ~/android/android-ndk-r21e
• ANDROID_NDK_ROOT env var: ~/android/android-ndk-r21e
• ANDROID_HOME env var: ~/Library/Android/sdk
• SWIFT_ANDROID_HOME env var: ~/android/swift-android-current

[andriydruk]

Hi, I guess you just call default swift compiler from XCode

You should call android swift-build directly:

$SWIFT_ANDROID_HOME/build-tools/current/swift-build

or you can add it to your PATH:

export PATH=$SWIFT_ANDROID_HOME/bin:$SWIFT_ANDROID_HOME/build-tools/current:$PATH

Also please check TOOLCHAINS:

export TOOLCHAINS=org.swift.540202104261a

[pedrovgs]

Thank you so much @andriydruk !!! I've created an alias like this in my .zshrc file so I don't mix the default swift compiler with the Android one. Right below the profile env variables load command.

source $HOME/.profile
alias swift-android-toolchain=$SWIFT_ANDROID_HOME/build-tools/current/swift-build

Now it works 😃