Swift Package IndexBuild Information
Failed to build swift-libass, reference 1.4.0 (6513c4), with Swift 6.3 for watchOS using Xcode 26.4 on 15 Apr 2026 12:57:14 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme swift-libass -destination generic/platform=watchOSBuild Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mihai8804858/swift-libass.git
Reference: 1.4.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mihai8804858/swift-libass
* tag 1.4.0 -> FETCH_HEAD
HEAD is now at 6513c48 Enable strict concurrency
Cloned https://github.com/mihai8804858/swift-libass.git
Revision (git rev-parse @):
6513c488e377a26c06db327fb2acfc2653a041d5
SUCCESS checkout https://github.com/mihai8804858/swift-libass.git at 1.4.0
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.3
Building package at path: $PWD
https://github.com/mihai8804858/swift-libass.git
Command line invocation:
/Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
swift-libass: /Users/admin/builder/spi-builder-workspace
resolved source packages: swift-libass
2026-04-15 08:56:47.134 xcodebuild[525:3022] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
2026-04-15 08:56:47.232 xcodebuild[525:3022] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
2026-04-15 08:56:47.760 xcodebuild[525:3022] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
],
"manifest_display_name" : "swift-libass",
"name" : "swift-libass",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "15.0"
},
{
"name" : "tvos",
"version" : "15.0"
},
{
"name" : "visionos",
"version" : "1.0"
},
{
"name" : "macos",
"version" : "12.0"
},
{
"name" : "maccatalyst",
"version" : "15.0"
}
],
"products" : [
{
"name" : "SwiftLibass",
"targets" : [
"SwiftLibass"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"swift_languages_versions" : [
"6"
],
"targets" : [
{
"c99name" : "libpng",
"module_type" : "BinaryTarget",
"name" : "libpng",
"path" : "Libraries/XCFrameworks/libpng.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "libass",
"module_type" : "BinaryTarget",
"name" : "libass",
"path" : "Libraries/XCFrameworks/libass.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "harfbuzz",
"module_type" : "BinaryTarget",
"name" : "harfbuzz",
"path" : "Libraries/XCFrameworks/harfbuzz.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "fribidi",
"module_type" : "BinaryTarget",
"name" : "fribidi",
"path" : "Libraries/XCFrameworks/fribidi.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "freetype",
"module_type" : "BinaryTarget",
"name" : "freetype",
"path" : "Libraries/XCFrameworks/freetype.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "fontconfig",
"module_type" : "BinaryTarget",
"name" : "fontconfig",
"path" : "Libraries/XCFrameworks/fontconfig.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "SwiftLibassTests",
"module_type" : "SwiftTarget",
"name" : "SwiftLibassTests",
"path" : "Tests",
"sources" : [
"SwiftLibassTests.swift"
],
"target_dependencies" : [
"SwiftLibass"
],
"type" : "test"
},
{
"c99name" : "SwiftLibass",
"module_type" : "SwiftTarget",
"name" : "SwiftLibass",
"path" : "Sources",
"product_memberships" : [
"SwiftLibass"
],
"resources" : [
{
"path" : "/Users/admin/builder/spi-builder-workspace/Sources/Resources/PrivacyInfo.xcprivacy",
"rule" : {
"copy" : {
}
}
}
],
"sources" : [
"SwiftLibass.swift"
],
"target_dependencies" : [
"fontconfig",
"freetype",
"harfbuzz",
"fribidi",
"libpng",
"libass"
],
"type" : "library"
}
],
"tools_version" : "6.0"
}
{
"workspace" : {
"name" : "SwiftLibass",
"schemes" : [
"Example",
"SwiftLibass"
]
}
}
2026-04-15 08:57:06.631 xcodebuild[622:3785] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
2026-04-15 08:57:06.728 xcodebuild[622:3785] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"swift-libass"
]
}
}
2026-04-15 08:57:08.287 xcodebuild[627:3840] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme swift-libass -destination generic/platform=watchOS
Command line invocation:
/Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme swift-libass -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
swift-libass: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
Target 'SwiftLibass' in project 'swift-libass'
➜ Explicit dependency on target 'SwiftLibass' in project 'swift-libass'
➜ Explicit dependency on target 'swift-libass_SwiftLibass' in project 'swift-libass'
Target 'SwiftLibass' in project 'swift-libass'
➜ Explicit dependency on target 'swift-libass_SwiftLibass' in project 'swift-libass'
Target 'swift-libass_SwiftLibass' in project 'swift-libass' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: bc5d49e2d3fe5fd91b56e1c4fa7b5b8c
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/bc5d49e2d3fe5fd91b56e1c4fa7b5b8c.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
2026-04-15 08:57:09.792 xcodebuild[630:3873] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace spi-builder-workspace with scheme swift-libass
(1 failure)
Command line invocation:
/Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
swift-libass: /Users/admin/builder/spi-builder-workspace
resolved source packages: swift-libass
2026-04-15 08:57:11.761 xcodebuild[648:4002] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
],
"manifest_display_name" : "swift-libass",
"name" : "swift-libass",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "15.0"
},
{
"name" : "tvos",
"version" : "15.0"
},
{
"name" : "visionos",
"version" : "1.0"
},
{
"name" : "macos",
"version" : "12.0"
},
{
"name" : "maccatalyst",
"version" : "15.0"
}
],
"products" : [
{
"name" : "SwiftLibass",
"targets" : [
"SwiftLibass"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"swift_languages_versions" : [
"6"
],
"targets" : [
{
"c99name" : "libpng",
"module_type" : "BinaryTarget",
"name" : "libpng",
"path" : "Libraries/XCFrameworks/libpng.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "libass",
"module_type" : "BinaryTarget",
"name" : "libass",
"path" : "Libraries/XCFrameworks/libass.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "harfbuzz",
"module_type" : "BinaryTarget",
"name" : "harfbuzz",
"path" : "Libraries/XCFrameworks/harfbuzz.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "fribidi",
"module_type" : "BinaryTarget",
"name" : "fribidi",
"path" : "Libraries/XCFrameworks/fribidi.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "freetype",
"module_type" : "BinaryTarget",
"name" : "freetype",
"path" : "Libraries/XCFrameworks/freetype.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "fontconfig",
"module_type" : "BinaryTarget",
"name" : "fontconfig",
"path" : "Libraries/XCFrameworks/fontconfig.xcframework",
"product_memberships" : [
"SwiftLibass"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "SwiftLibassTests",
"module_type" : "SwiftTarget",
"name" : "SwiftLibassTests",
"path" : "Tests",
"sources" : [
"SwiftLibassTests.swift"
],
"target_dependencies" : [
"SwiftLibass"
],
"type" : "test"
},
{
"c99name" : "SwiftLibass",
"module_type" : "SwiftTarget",
"name" : "SwiftLibass",
"path" : "Sources",
"product_memberships" : [
"SwiftLibass"
],
"resources" : [
{
"path" : "/Users/admin/builder/spi-builder-workspace/Sources/Resources/PrivacyInfo.xcprivacy",
"rule" : {
"copy" : {
}
}
}
],
"sources" : [
"SwiftLibass.swift"
],
"target_dependencies" : [
"fontconfig",
"freetype",
"harfbuzz",
"fribidi",
"libpng",
"libass"
],
"type" : "library"
}
],
"tools_version" : "6.0"
}
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"swift-libass"
]
}
}
2026-04-15 08:57:12.931 xcodebuild[658:4067] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme swift-libass -destination generic/platform=watchOS
Command line invocation:
/Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme swift-libass -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
swift-libass: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
Target 'SwiftLibass' in project 'swift-libass'
➜ Explicit dependency on target 'SwiftLibass' in project 'swift-libass'
➜ Explicit dependency on target 'swift-libass_SwiftLibass' in project 'swift-libass'
Target 'SwiftLibass' in project 'swift-libass'
➜ Explicit dependency on target 'swift-libass_SwiftLibass' in project 'swift-libass'
Target 'swift-libass_SwiftLibass' in project 'swift-libass' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: bc5d49e2d3fe5fd91b56e1c4fa7b5b8c
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/bc5d49e2d3fe5fd91b56e1c4fa7b5b8c.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fontconfig.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/freetype.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/harfbuzz.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/fribidi.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libpng.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/Libraries/XCFrameworks/libass.xcframework'. (in target 'SwiftLibass' from project 'swift-libass')
2026-04-15 08:57:14.053 xcodebuild[661:4108] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace spi-builder-workspace with scheme swift-libass
(1 failure)
BUILD FAILURE 6.3 watchOS