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Add workflow to build packages for iOS. #169

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ae72e5b
Add workflow to build packages for iOS.
grynspan Oct 1, 2025
ce96be9
Build script can just use pwd instead of a child directory maybe
grynspan Oct 1, 2025
a62dbe3
Rename tests_ios
grynspan Oct 1, 2025
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12 changes: 12 additions & 0 deletions .github/workflows/pull_request.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,18 @@ jobs:
xcrun swift package init --type library
xcrun swift build

tests_ios:
name: Test iOS
uses: ./.github/workflows/swift_package_test.yml
with:
enable_linux_checks: false
enable_windows_checks: false
# iOS
enable_ios_checks: true
ios_pre_build_command: |
pwd
xcrun swift package init --type library

soundness:
name: Soundness
uses: ./.github/workflows/soundness.yml
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67 changes: 67 additions & 0 deletions .github/workflows/swift_package_test.yml
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Expand Up @@ -19,6 +19,22 @@ on:
type: string
description: "macOS arch list (JSON)"
default: "[\"ARM64\"]"
ios_host_xcode_versions:
type: string
description: "Xcode version list (JSON)"
default: null
ios_host_exclude_xcode_versions:
type: string
description: "Exclude Xcode version list (JSON)"
default: null
ios_host_versions:
type: string
description: "iOS host (macOS) version list (JSON)"
default: null
ios_host_archs:
type: string
description: "iOS host (macOS) arch list (JSON)"
default: null
linux_swift_versions:
type: string
description: "Include Linux Swift version list (JSON)"
Expand Down Expand Up @@ -84,6 +100,14 @@ on:
type: string
description: "macOS command to build and test the package"
default: "xcrun swift test"
ios_pre_build_command:
type: string
description: "macOS command to execute before building the Swift package for iOS"
default: ""
ios_build_command:
type: string
description: "macOS command to build the package for iOS"
default: "xcrun swift build --build-tests --sdk \"$(xcrun --sdk iphoneos --show-sdk-path)\" --triple arm64-apple-ios"
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@kkebo kkebo Oct 8, 2025 •
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IMHO, it would be better to use $(xcrun -f swift) instead of xcrun swift.

xcrun swift is fine with packages that do not contain executableTarget, but it causes the following errors with packages that contain executableTarget:

clang: warning: using sysroot for 'MacOSX' but targeting 'iPhone' [-Wincompatible-sysroot]

To prevent this, you can use $(xcrun -f swift) instead of xcrun swift.

Related discussion: https://forums.swift.org/t/getting-incompatible-sysroot-warning-when-compiling-for-ios-with-sdk-and-target-set/80584

You can easily reproduce this issue by the following steps:

mkdir foo && cd foo
swift package init --type executable --name Foo
xcrun swift build --sdk "$(xcrun --sdk iphoneos --show-sdk-path)" --triple arm64-apple-ios

linux_build_command:
type: string
description: "Linux command to build and test the package"
Expand All @@ -110,6 +134,9 @@ on:
macos_env_vars:
description: "Newline separated list of environment variables"
type: string
ios_host_env_vars:
description: "Newline separated list of environment variables"
type: string
linux_env_vars:
description: "Newline separated list of environment variables"
type: string
Expand All @@ -136,6 +163,10 @@ on:
type: boolean
description: "Boolean to enable macOS testing. Defaults to false"
default: false
enable_ios_checks:
type: boolean
description: "Boolean to enable iOS testing. Defaults to false"
default: false
enable_windows_checks:
type: boolean
description: "Boolean to enable windows testing. Defaults to true"
Expand Down Expand Up @@ -192,6 +223,42 @@ jobs:
run: ${{ inputs.macos_build_command }} ${{ (contains(matrix.swift_version, 'nightly') && inputs.swift_nightly_flags) || inputs.swift_flags }}
timeout-minutes: 60

ios-build:
name: iOS (Build Only, Xcode ${{ matrix.xcode_version }} - ${{ matrix.os_version }} - ${{ matrix.arch }})
if: ${{ inputs.enable_ios_checks }}
runs-on: [self-hosted, macos, "${{ matrix.os_version }}", "${{ matrix.arch }}"]
strategy:
fail-fast: false
matrix:
xcode_version: ${{ fromJson(inputs.ios_host_xcode_versions || inputs.macos_xcode_versions) }}
os_version: ${{ fromJson(inputs.ios_host_versions || inputs.macos_versions) }}
arch: ${{ fromJson(inputs.ios_host_archs || inputs.macos_archs) }}
exclude:
- ${{ fromJson(inputs.ios_host_exclude_xcode_versions || inputs.macos_exclude_xcode_versions) }}
steps:
- name: Checkout repository
uses: actions/checkout@v4
- name: Provide token
if: ${{ inputs.needs_token }}
run: |
echo "GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }}" >> $GITHUB_ENV
- name: Set environment variables
if: ${{ inputs.ios_host_env_vars }}
run: |
for i in "${{ inputs.ios_host_env_vars }}"
do
printf "%s\n" $i >> $GITHUB_ENV
done
- name: Select Xcode
run: echo "DEVELOPER_DIR=/Applications/Xcode_${{ matrix.xcode_version }}.app" >> $GITHUB_ENV
- name: Swift version
run: xcrun swift --version
- name: Pre-build
run: ${{ inputs.ios_pre_build_command }}
- name: Build
run: ${{ inputs.ios_build_command }} ${{ (contains(matrix.swift_version, 'nightly') && inputs.swift_nightly_flags) || inputs.swift_flags }}
timeout-minutes: 60

linux-build:
name: Linux (${{ matrix.swift_version }} - ${{ matrix.os_version }})
if: ${{ inputs.enable_linux_checks }}
Expand Down