Swift Package Index

Build Information

Failed to build ZeroMQ, reference master (5ac96b), with Swift 6.3 for iOS using Xcode 26.4 on 11 Apr 2026 16:36:20 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme ZeroMQ -destination generic/platform=iOS

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Evolution-App/ZeroMQ.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Evolution-App/ZeroMQ
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 5ac96be Remove CZeroMQ as dependency and embed as system library
Cloned https://github.com/Evolution-App/ZeroMQ.git
Revision (git rev-parse @):
5ac96bed4da760e095e5ca588512d0b9ff1b6e70
SUCCESS checkout https://github.com/Evolution-App/ZeroMQ.git at master
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.3
Building package at path:  $PWD
https://github.com/Evolution-App/ZeroMQ.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
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libzmq using your system-packager:
    brew install zmq
Resolve Package Graph
you may be able to install libzmq using your system-packager:
    brew install zmq
Resolved source packages:
  ZeroMQ: /Users/admin/builder/spi-builder-workspace
resolved source packages: ZeroMQ
2026-04-11 12:36:03.964 xcodebuild[528:3072] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ZeroMQ",
  "name" : "ZeroMQ",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ZeroMQKit",
      "targets" : [
        "ZeroMQKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ZeroMQKit",
      "module_type" : "SwiftTarget",
      "name" : "ZeroMQKit",
      "path" : "Sources/ZeroMQKit",
      "product_memberships" : [
        "ZeroMQKit"
      ],
      "sources" : [
        "CURVE.swift",
        "Context.swift",
        "Device.swift",
        "Error.swift",
        "Message.swift",
        "Poller.swift",
        "Proxy.swift",
        "Socket.swift"
      ],
      "target_dependencies" : [
        "CZeroMQ"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MainTests",
      "module_type" : "SwiftTarget",
      "name" : "MainTests",
      "path" : "Tests/MainTests",
      "sources" : [
        "ZeroMQTests.swift"
      ],
      "target_dependencies" : [
        "ZeroMQKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CZeroMQ",
      "module_type" : "SystemLibraryTarget",
      "name" : "CZeroMQ",
      "path" : "Sources/CZeroMQ",
      "product_memberships" : [
        "ZeroMQKit"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "ZeroMQ"
    ]
  }
}
2026-04-11 12:36:12.099 xcodebuild[637:3842] [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 ZeroMQ -destination generic/platform=iOS
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 ZeroMQ -destination generic/platform=iOS
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libzmq using your system-packager:
    brew install zmq
Resolved source packages:
  ZeroMQ: /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 'ZeroMQKit' in project 'ZeroMQ'
        ➜ Explicit dependency on target 'ZeroMQKit' in project 'ZeroMQ'
    Target 'ZeroMQKit' in project 'ZeroMQ'
        ➜ Explicit dependency on target 'CZeroMQ' in project 'ZeroMQ'
    Target 'CZeroMQ' in project 'ZeroMQ' (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/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.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: 08a1b7b0804208cbbb70a43007659baa
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/08a1b7b0804208cbbb70a43007659baa.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
ClangStatCache /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos26.4-23E237-688ef53f1462e2c8f657fdc38a81448fc1e9a37d8fcda5dee89abd67dc927a23.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos26.4-23E237-688ef53f1462e2c8f657fdc38a81448fc1e9a37d8fcda5dee89abd67dc927a23.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-iphoneos
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-iphoneos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.modulemap (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.DependencyStaticMetadataFileList (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.DependencyMetadataFileList (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit-OutputFileMap.json (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.SwiftFileList (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.LinkFileList (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.SwiftConstValuesFileList (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit_const_extract_protocols.json (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit_const_extract_protocols.json
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos/ZeroMQKit.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.modulemap (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/ZeroMQKit.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos
SwiftDriver ZeroMQKit normal arm64 com.apple.xcode.tools.swift.compiler (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name ZeroMQKit -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -Xcc -fmodule-map-file\=/Users/admin/builder/spi-builder-workspace/Sources/CZeroMQ/module.modulemap -DXcode -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -target arm64-apple-ios12.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -Isystem /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos26.4-23E237-688ef53f1462e2c8f657fdc38a81448fc1e9a37d8fcda5dee89abd67dc927a23.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
error: Clang dependency scanning failure: While building module 'CZeroMQ' imported from CZeroMQ-01a91093.input:1:
In file included from <module-includes>:1:
/Users/admin/builder/spi-builder-workspace/Sources/CZeroMQ/./zmqinclude.h:1:9: fatal error: 'zmq.h' file not found
CZeroMQ-01a91093.input:1:1: fatal error: could not build module 'CZeroMQ'
 (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: error: Unable to resolve module dependency: 'CZeroMQ'
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: note: A dependency of main module 'ZeroMQKit'
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Context.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Device.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Error.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Message.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Poller.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Proxy.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Socket.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
2026-04-11 12:36:13.585 xcodebuild[651:3918] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
error: clang dependency scanning failure: While building module 'CZeroMQ' imported from CZeroMQ-01a91093.input:1:
In file included from <module-includes>:1:
/Users/admin/builder/spi-builder-workspace/Sources/CZeroMQ/./zmqinclude.h:1:9: fatal error: 'zmq.h' file not found
CZeroMQ-01a91093.input:1:1: fatal error: could not build module 'CZeroMQ'
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: error: unable to resolve module dependency: 'CZeroMQ'
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: note: a dependency of main module 'ZeroMQKit'
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Context.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Device.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Error.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Message.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Poller.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Proxy.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Socket.swift:25:8: note: also imported here
import CZeroMQ
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver ZeroMQKit normal arm64 com.apple.xcode.tools.swift.compiler (in target 'ZeroMQKit' from project 'ZeroMQ')
	Building workspace spi-builder-workspace with scheme ZeroMQ
(2 failures)
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
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libzmq using your system-packager:
    brew install zmq
Resolved source packages:
  ZeroMQ: /Users/admin/builder/spi-builder-workspace
resolved source packages: ZeroMQ
2026-04-11 12:36:17.514 xcodebuild[675:4082] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ZeroMQ",
  "name" : "ZeroMQ",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ZeroMQKit",
      "targets" : [
        "ZeroMQKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ZeroMQKit",
      "module_type" : "SwiftTarget",
      "name" : "ZeroMQKit",
      "path" : "Sources/ZeroMQKit",
      "product_memberships" : [
        "ZeroMQKit"
      ],
      "sources" : [
        "CURVE.swift",
        "Context.swift",
        "Device.swift",
        "Error.swift",
        "Message.swift",
        "Poller.swift",
        "Proxy.swift",
        "Socket.swift"
      ],
      "target_dependencies" : [
        "CZeroMQ"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MainTests",
      "module_type" : "SwiftTarget",
      "name" : "MainTests",
      "path" : "Tests/MainTests",
      "sources" : [
        "ZeroMQTests.swift"
      ],
      "target_dependencies" : [
        "ZeroMQKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CZeroMQ",
      "module_type" : "SystemLibraryTarget",
      "name" : "CZeroMQ",
      "path" : "Sources/CZeroMQ",
      "product_memberships" : [
        "ZeroMQKit"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "ZeroMQ"
    ]
  }
}
2026-04-11 12:36:18.862 xcodebuild[692:4168] [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 ZeroMQ -destination generic/platform=iOS
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 ZeroMQ -destination generic/platform=iOS
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libzmq using your system-packager:
    brew install zmq
Resolved source packages:
  ZeroMQ: /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 'ZeroMQKit' in project 'ZeroMQ'
        ➜ Explicit dependency on target 'ZeroMQKit' in project 'ZeroMQ'
    Target 'ZeroMQKit' in project 'ZeroMQ'
        ➜ Explicit dependency on target 'CZeroMQ' in project 'ZeroMQ'
    Target 'CZeroMQ' in project 'ZeroMQ' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos26.4-23E237-688ef53f1462e2c8f657fdc38a81448fc1e9a37d8fcda5dee89abd67dc927a23.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos26.4-23E237-688ef53f1462e2c8f657fdc38a81448fc1e9a37d8fcda5dee89abd67dc927a23.sdkstatcache
SwiftDriver ZeroMQKit normal arm64 com.apple.xcode.tools.swift.compiler (in target 'ZeroMQKit' from project 'ZeroMQ')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name ZeroMQKit -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -Xcc -fmodule-map-file\=/Users/admin/builder/spi-builder-workspace/Sources/CZeroMQ/module.modulemap -DXcode -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -target arm64-apple-ios12.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -Isystem /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos26.4-23E237-688ef53f1462e2c8f657fdc38a81448fc1e9a37d8fcda5dee89abd67dc927a23.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ZeroMQ.build/Debug-iphoneos/ZeroMQKit.build/Objects-normal/arm64/ZeroMQKit-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
error: Clang dependency scanning failure: While building module 'CZeroMQ' imported from CZeroMQ-cd015a2b.input:1:
In file included from <module-includes>:1:
/Users/admin/builder/spi-builder-workspace/Sources/CZeroMQ/./zmqinclude.h:1:9: fatal error: 'zmq.h' file not found
CZeroMQ-cd015a2b.input:1:1: fatal error: could not build module 'CZeroMQ'
 (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: error: Unable to resolve module dependency: 'CZeroMQ'
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: note: A dependency of main module 'ZeroMQKit'
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Context.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Device.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Error.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Message.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Poller.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Proxy.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Socket.swift:25:8: note: Also imported here
import CZeroMQ
       ^ (in target 'ZeroMQKit' from project 'ZeroMQ')
2026-04-11 12:36:19.796 xcodebuild[702:4218] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
error: clang dependency scanning failure: While building module 'CZeroMQ' imported from CZeroMQ-cd015a2b.input:1:
In file included from <module-includes>:1:
/Users/admin/builder/spi-builder-workspace/Sources/CZeroMQ/./zmqinclude.h:1:9: fatal error: 'zmq.h' file not found
CZeroMQ-cd015a2b.input:1:1: fatal error: could not build module 'CZeroMQ'
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: error: unable to resolve module dependency: 'CZeroMQ'
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/CURVE.swift:25:8: note: a dependency of main module 'ZeroMQKit'
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Context.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Device.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Error.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Message.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Poller.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Proxy.swift:25:8: note: also imported here
import CZeroMQ
       ^
/Users/admin/builder/spi-builder-workspace/Sources/ZeroMQKit/Socket.swift:25:8: note: also imported here
import CZeroMQ
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver ZeroMQKit normal arm64 com.apple.xcode.tools.swift.compiler (in target 'ZeroMQKit' from project 'ZeroMQ')
	Building workspace spi-builder-workspace with scheme ZeroMQ
(2 failures)
BUILD FAILURE 6.3 iOS