Swift Package IndexBuild Information
Successful build of libpng, reference main (0eff23), with Swift 6.3 for macOS (SPM) on 4 Sep 2026 09:10:14 UTC.
Swift 6 data race errors: 0
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.5.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 5.0.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/the-swift-collective/libpng.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/the-swift-collective/libpng
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
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 main
Fetching https://github.com/the-swift-collective/zlib.git
[1/71] Fetching zlib
Fetched https://github.com/the-swift-collective/zlib.git from cache (0.79s)
Computing version for https://github.com/the-swift-collective/zlib.git
Computed https://github.com/the-swift-collective/zlib.git at 1.3.1 (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 1.3.1
========================================
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": "libpng",
"name": "libpng",
"url": "https://github.com/the-swift-collective/libpng.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/libpng",
"traits": [
"default"
],
"dependencies": [
{
"identity": "zlib",
"name": "zlib",
"url": "https://github.com/the-swift-collective/zlib.git",
"version": "1.3.2",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/zlib",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
]
}
Fetching https://github.com/the-swift-collective/libpng.git
[1/30] Fetching libpng
Fetched https://github.com/the-swift-collective/libpng.git from cache (0.74s)
Fetching https://github.com/the-swift-collective/zlib.git from cache
Fetched https://github.com/the-swift-collective/zlib.git from cache (0.53s)
Computing version for https://github.com/the-swift-collective/zlib.git
Computed https://github.com/the-swift-collective/zlib.git at 1.3.2 (1.19s)
Creating working copy for https://github.com/the-swift-collective/libpng.git
Working copy of https://github.com/the-swift-collective/libpng.git resolved at main (0eff23a)
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
warning: '.resolve-product-dependencies': dependency 'libpng' is not used by any target
Found 1 product dependencies
- zlib
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/the-swift-collective/libpng.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.5.0.app xcrun swift build --arch arm64
Building for debugging...
[0/47] Compiling pnglibconf pnglibconf.c
[1/47] Write swift-version-69A768CDF2A0BEE1.txt
[2/47] Compiling ZLibC crc32.c
[3/47] Compiling ZLibC uncompr.c
[4/47] Compiling ZLibC adler32.c
[5/47] Compiling ZLibC trees.c
[6/47] Compiling ZLibC inflate.c
[7/47] Compiling ZLibC inftrees.c
[8/47] Write sources
[10/47] Compiling ZLibC deflate.c
[11/47] Compiling ZLibC inffast.c
[12/47] Compiling ZLibC infback.c
[13/47] Compiling ZLibC compress.c
[14/47] Compiling ZLibC gzclose.c
[15/47] Compiling ZLibC gzlib.c
[16/47] Compiling ZLibC gzwrite.c
[17/47] Compiling ZLibC gzread.c
[18/47] Compiling ZLibC zutil.c
[20/49] Compiling ZLib ZLib.swift
[21/49] Emitting module ZLib
[21/49] Compiling powerpc_init.c
[22/49] Compiling filter_vsx_intrinsics.c
[23/49] Compiling png pngtrans.c
[24/49] Compiling png pngwtran.c
[25/49] Compiling png pngset.c
[26/49] Compiling png pngrio.c
[27/49] Compiling png pngwio.c
[28/49] Compiling png pngmem.c
[29/49] Compiling png pngpread.c
[30/49] Compiling png pngread.c
[31/49] Compiling png pngwutil.c
[32/49] Compiling png pngrutil.c
[33/49] Compiling png pngget.c
[34/49] Compiling png pngerror.c
[35/49] Compiling mips_init.c
[35/49] Compiling filter_msa_intrinsics.c
[37/49] Compiling filter_mmi_inline_assembly.c
[38/49] Compiling loongarch_lsx_init.c
[39/49] Compiling filter_lsx_intrinsics.c
[40/49] Compiling png pngrtran.c
[41/49] Compiling intel_init.c
[42/49] Compiling filter_sse2_intrinsics.c
[43/49] Compiling png png.c
[44/49] Compiling filter_neon.S
[45/49] Compiling palette_neon_intrinsics.c
[46/49] Compiling png pngwrite.c
[47/49] Compiling arm_init.c
[48/49] Compiling filter_neon_intrinsics.c
[50/51] Emitting module LibPNG
[51/51] Compiling LibPNG LibPNG.swift
Build complete! (2.87s)
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.