Swift Package Index

Build Information

Failed to build SwiftTrace, reference main (3dd80b), with Swift 6.3 for macOS (SPM) on 14 Apr 2026 17:43:18 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/johnno1962/SwiftTrace.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/johnno1962/SwiftTrace
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 3dd80b3 Ability to repair.
Cloned https://github.com/johnno1962/SwiftTrace.git
Revision (git rev-parse @):
3dd80b3aee1cbdd1ed503ef57145021a5d594d30
SUCCESS checkout https://github.com/johnno1962/SwiftTrace.git at main
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "traits": [
    "default"
  ],
  "dependencies": [
    {
      "identity": "swifttrace",
      "name": "SwiftTrace",
      "url": "https://github.com/johnno1962/SwiftTrace.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftTrace",
      "traits": [
        "default"
      ],
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/johnno1962/SwiftTrace.git
[1/2127] Fetching swifttrace
Fetched https://github.com/johnno1962/SwiftTrace.git from cache (1.08s)
Creating working copy for https://github.com/johnno1962/SwiftTrace.git
Working copy of https://github.com/johnno1962/SwiftTrace.git resolved at main (3dd80b3)
warning: '.resolve-product-dependencies': dependency 'swifttrace' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/johnno1962/SwiftTrace.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/29] Compiling SwiftTraceGuts xt_forwarding_trampoline_x64.s
[1/29] Compiling SwiftTraceGuts xt_forwarding_trampoline_arm7.s
[2/29] Compiling SwiftTraceGuts xt_forwarding_trampoline_x86.s
[3/29] Compiling SwiftTraceGutsD xt_forwarding_trampoline_x64.s
[4/29] Compiling SwiftTraceGuts xt_forwarding_trampoline_arm64.s
[5/29] Compiling SwiftTraceGutsD xt_forwarding_trampoline_x86.s
[6/29] Compiling SwiftTraceGutsD xt_forwarding_trampoline_arm7.s
[7/29] Write swift-version--6988338F2F200930.txt
[8/29] Compiling SwiftTraceGutsD xt_forwarding_trampoline_arm64.s
[9/29] Compiling SwiftTraceGutsD fishhook.c
[10/29] Write sources
[10/29] Compiling SwiftTraceGuts fishhook.c
[13/29] Compiling SwiftTraceGuts Trampolines.mm
[14/29] Compiling SwiftTraceGutsD SwiftTrace.mm
[14/29] Compiling SwiftTraceGutsD fast_dladdr.mm
[14/29] Compiling SwiftTraceGuts SwiftTrace.mm
[14/29] Compiling SwiftTraceGuts ObjCBridge.mm
[14/29] Compiling SwiftTraceGutsD ObjCBridge.mm
[14/29] Compiling SwiftTraceGuts fast_dladdr.mm
[14/29] Compiling SwiftTraceGutsD Trampolines.mm
[21/29] Write Objects.LinkFileList
error: link command failed with exit code 1 (use -v to see invocation)
Undefined symbols for architecture arm64:
  "_NSLog", referenced from:
      _method_getSignature in SwiftTrace.mm.o
      _fast_dlsym in fast_dladdr.mm.o
      _fast_dlscan in fast_dladdr.mm.o
      _fast_dlscan in fast_dladdr.mm.o
  "_OBJC_CLASS_$_NSAssertionHandler", referenced from:
       in Trampolines.mm.o
  "_OBJC_CLASS_$_NSBundle", referenced from:
       in SwiftTrace.mm.o
  "_OBJC_CLASS_$_NSMethodSignature", referenced from:
       in SwiftTrace.mm.o
  "_OBJC_CLASS_$_NSMutableArray", referenced from:
       in SwiftTrace.mm.o
  "_OBJC_CLASS_$_NSObject", referenced from:
      __OBJC_$_CATEGORY_NSObject_$_SwiftTrace in ObjCBridge.mm.o
       in fast_dladdr.mm.o
  "_OBJC_CLASS_$_NSString", referenced from:
       in Trampolines.mm.o
  "_OBJC_CLASS_$_NSThread", referenced from:
       in fast_dladdr.mm.o
  "_OBJC_CLASS_$_SwiftMeta", referenced from:
       in ObjCBridge.mm.o
  "_OBJC_CLASS_$_SwiftTrace", referenced from:
       in ObjCBridge.mm.o
  "_OBJC_EHTYPE_$_NSException", referenced from:
      GCC_except_table1 in SwiftTrace.mm.o
  "___CFConstantStringClassReference", referenced from:
       in SwiftTrace.mm.o
       in Trampolines.mm.o
       in Trampolines.mm.o
       in Trampolines.mm.o
       in Trampolines.mm.o
       in fast_dladdr.mm.o
       in fast_dladdr.mm.o
      ...
  "___objc_personality_v0", referenced from:
      /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/SwiftTraceGuts.build/SwiftTrace.mm.o
  "_class_getImageName", referenced from:
      _swiftUIBundlePath in SwiftTrace.mm.o
  "_class_getSuperclass", referenced from:
      _objc_classArray in SwiftTrace.mm.o
  "_method_getTypeEncoding", referenced from:
      _method_getSignature in SwiftTrace.mm.o
  "_objc_autoreleasePoolPop", referenced from:
      __GLOBAL__sub_I_fast_dladdr.mm in fast_dladdr.mm.o
  "_objc_autoreleasePoolPush", referenced from:
      __GLOBAL__sub_I_fast_dladdr.mm in fast_dladdr.mm.o
  "_objc_autoreleaseReturnValue", referenced from:
      _objc_classArray in SwiftTrace.mm.o
      _method_getSignature in SwiftTrace.mm.o
      _findSwizzleOf in Trampolines.mm.o
      _describeImageSymbol in fast_dladdr.mm.o
      _describeImageInfo in fast_dladdr.mm.o
      _describeImagePointer in fast_dladdr.mm.o
  "_objc_begin_catch", referenced from:
      _method_getSignature in SwiftTrace.mm.o
  "_objc_copyClassList", referenced from:
      _objc_classArray in SwiftTrace.mm.o
  "_objc_end_catch", referenced from:
      _method_getSignature in SwiftTrace.mm.o
      _method_getSignature in SwiftTrace.mm.o
  "_objc_enumerationMutation", referenced from:
      _findSwizzleOf in Trampolines.mm.o
      _injection_stack in fast_dladdr.mm.o
  "_objc_msgSend", referenced from:
       in objc-stubs-file
  "_objc_release", referenced from:
      _searchMainImage in SwiftTrace.mm.o
      _searchMainImage in SwiftTrace.mm.o
      _searchMainImage in SwiftTrace.mm.o
      _searchMainImage in SwiftTrace.mm.o
      _searchBundleImages in SwiftTrace.mm.o
      _searchBundleImages in SwiftTrace.mm.o
      _searchBundleImages in SwiftTrace.mm.o
      _searchBundleImages in SwiftTrace.mm.o
      ...
  "_objc_retain", referenced from:
      _objc_classArray in SwiftTrace.mm.o
      _method_getSignature in SwiftTrace.mm.o
      _findSwizzleOf in Trampolines.mm.o
      _findSwizzleOf in Trampolines.mm.o
  "_objc_retainAutorelease", referenced from:
      _sig_argumentType in SwiftTrace.mm.o
      _sig_returnType in SwiftTrace.mm.o
      _searchMainImage in SwiftTrace.mm.o
      _searchBundleImages in SwiftTrace.mm.o
      _appBundleImages in SwiftTrace.mm.o
      _appBundleImages in SwiftTrace.mm.o
      _injection_stack in fast_dladdr.mm.o
      ...
  "_objc_retainAutoreleasedReturnValue", referenced from:
      _method_getSignature in SwiftTrace.mm.o
      _searchMainImage in SwiftTrace.mm.o
      _searchMainImage in SwiftTrace.mm.o
      _searchBundleImages in SwiftTrace.mm.o
      _searchBundleImages in SwiftTrace.mm.o
      _appBundleImages in SwiftTrace.mm.o
      _appBundleImages in SwiftTrace.mm.o
      _appBundleImages in SwiftTrace.mm.o
      ...
  "_objc_retainBlock", referenced from:
      _findHiddenSwiftSymbols in SwiftTrace.mm.o
  "_objc_storeStrong", referenced from:
      +[NSObject(SwiftTrace) setSwiftTraceMethodExclusionPattern:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceMethodExclusionPattern:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceMethodExclusionPattern:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceMethodInclusionPattern:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceMethodInclusionPattern:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceMethodInclusionPattern:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceFunctionSuffixes:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceFunctionSuffixes:] in ObjCBridge.mm.o
      +[NSObject(SwiftTrace) setSwiftTraceFunctionSuffixes:] in ObjCBridge.mm.o
      ...
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
[23/55] Linking libSwiftTraceGuts.dylib
[23/55] Linking libSwiftTraceGutsD.dylib
BUILD FAILURE 6.3 macosSpm