Swift Package Index

Build Information

Successful build of libpng, reference v1.6.45 (0eff23), with Swift 6.4 for macOS (SPM) on 27 Sep 2026 19:47:50 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/the-swift-collective/libpng.git
Reference: v1.6.45
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/the-swift-collective/libpng
 * tag               v1.6.45    -> FETCH_HEAD
HEAD is now at 0eff23a Support swift 5.5 minimum.
Submodule path 'libpng': checked out '93bc3a848b533d612a121a0c31e304cd02be7465'
Submodule 'libpng' (https://github.com/the-swift-collective/LibPNGC.git) registered for path 'libpng'
Cloning into '/Users/admin/builder/spi-builder-workspace/libpng'...
Cloned https://github.com/the-swift-collective/libpng.git
Revision (git rev-parse @):
0eff23aca92a086b7892831f5cb4f58e15be9449
SUCCESS checkout https://github.com/the-swift-collective/libpng.git at v1.6.45
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/the-swift-collective/libpng.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Constructing description]
[Planning deferred tasks]
[35 / 143]
[45 / 144] pnglibconf
[56 / 154]
[70 / 170]
[72 / 170]
[85 / 170] ZLibC
[90 / 170] ZLib
[112 / 182] png
[135 / 187]
[146 / 187] ZLibC
[166 / 187] png
[179 / 187] png
[186 / 187] LibPNG
Build complete! (4.38 sec)
Fetching https://github.com/the-swift-collective/zlib.git
[1/71] Fetching zlib
Fetched https://github.com/the-swift-collective/zlib.git (0.78s)
Computing version for https://github.com/the-swift-collective/zlib.git
Computed https://github.com/the-swift-collective/zlib.git at 1.3.2 (1.43s)
Creating working copy for https://github.com/the-swift-collective/zlib.git
Working copy of https://github.com/the-swift-collective/zlib.git resolved at 1.3.2
Build complete.
{
  "dependencies" : [
    {
      "identity" : "zlib",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.3.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/the-swift-collective/zlib.git"
    }
  ],
  "manifest_display_name" : "libpng",
  "name" : "libpng",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "png",
      "targets" : [
        "pnglibconf",
        "png"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "LibPNG",
      "targets" : [
        "LibPNG"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "pnglibconf",
      "module_type" : "ClangTarget",
      "name" : "pnglibconf",
      "path" : "Sources/pnglibconf",
      "product_memberships" : [
        "png",
        "LibPNG"
      ],
      "sources" : [
        "pnglibconf.c"
      ],
      "type" : "library"
    },
    {
      "c99name" : "png",
      "module_type" : "ClangTarget",
      "name" : "png",
      "path" : "libpng",
      "product_dependencies" : [
        "ZLib"
      ],
      "product_memberships" : [
        "png",
        "LibPNG"
      ],
      "sources" : [
        "arm/arm_init.c",
        "arm/filter_neon.S",
        "arm/filter_neon_intrinsics.c",
        "arm/palette_neon_intrinsics.c",
        "intel/filter_sse2_intrinsics.c",
        "intel/intel_init.c",
        "loongarch/filter_lsx_intrinsics.c",
        "loongarch/loongarch_lsx_init.c",
        "mips/filter_mmi_inline_assembly.c",
        "mips/filter_msa_intrinsics.c",
        "mips/mips_init.c",
        "png.c",
        "pngerror.c",
        "pngget.c",
        "pngmem.c",
        "pngpread.c",
        "pngread.c",
        "pngrio.c",
        "pngrtran.c",
        "pngrutil.c",
        "pngset.c",
        "pngtrans.c",
        "pngwio.c",
        "pngwrite.c",
        "pngwtran.c",
        "pngwutil.c",
        "powerpc/filter_vsx_intrinsics.c",
        "powerpc/powerpc_init.c"
      ],
      "target_dependencies" : [
        "pnglibconf"
      ],
      "type" : "library"
    },
    {
      "c99name" : "LibPNGTests",
      "module_type" : "SwiftTarget",
      "name" : "LibPNGTests",
      "path" : "Tests/LibPNGTests",
      "sources" : [
        "LibPNGTests.swift"
      ],
      "target_dependencies" : [
        "LibPNG"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LibPNG",
      "module_type" : "SwiftTarget",
      "name" : "LibPNG",
      "path" : "Sources/LibPNG",
      "product_memberships" : [
        "LibPNG"
      ],
      "sources" : [
        "LibPNG.swift"
      ],
      "target_dependencies" : [
        "png"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
Done.