Swift Package Index

Build Information

Failed to build LibPNG, reference master (c059e4), with Swift 6.4 for Linux on 20 Sep 2026 22:01:40 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344843-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/LuizZak/swift-libpng.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/LuizZak/swift-libpng
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at c059e4a Adding test for PNGFile.fromArgb
Cloned https://github.com/LuizZak/swift-libpng.git
Revision (git rev-parse @):
c059e4a34d0a84a2a1cc7eac8acdb8fa3ab8142f
SUCCESS checkout https://github.com/LuizZak/swift-libpng.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.4
Building package at path:  $PWD
https://github.com/LuizZak/swift-libpng.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:c77fcce225e223ac0fafed844619173fc6de8d62dd560eeb28db3182af6a282b
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest
warning: 'spi-builder-workspace': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Tests/LibPNGTests/TestResources/test.png
warning: 'spi-builder-workspace': you may be able to install libpng using your system-packager:
    apt-get install libpng-dev
Building for debugging...
[Pre-planning 1 / 68]
[19 / 27] LibPNG
error: SwiftCompile normal x86_64 failed with a nonzero exit code. Command line:     cd /host

<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "libpng.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/Sources/CLibPNG/libpng.h:1:10: error: 'png.h' file not found
1 | #include <png.h>
  |          `- error: 'png.h' file not found
2 |
/host/spi-builder-workspace/Sources/LibPNG/LibPNG+FromData.swift:1:8: error: could not build C module 'CLibPNG'
 1 | import CLibPNG
   |        `- error: could not build C module 'CLibPNG'
 2 |
 3 | public extension PNGFile {
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/LibPNG/LibPNG+FromData.swift /host/spi-builder-workspace/Sources/LibPNG/LibPNG.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -I /host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64 -module-cache-path /host/spi-builder-workspace/.build/out/ModuleCache.noindex -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -validate-clang-modules-once -clang-build-session-file /host/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /host -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -fmodule-map-file\=/host/spi-builder-workspace/Sources/CLibPNG/module.modulemap -Xcc -fno-omit-frame-pointer -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/DerivedSources-normal/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/DerivedSources/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name LibPNG -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/Objects-normal/x86_64/LibPNG_const_extract_protocols.json -in-process-plugin-server-path /usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/Objects-normal/x86_64/Modules/LibPNG.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/Objects-normal/x86_64/Modules/LibPNG.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/Objects-normal/x86_64/LibPNG-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/Objects-normal/x86_64/LibPNG-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/Objects-normal/x86_64/LibPNG-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/LibPNG.build/Debug-linux-x86_64/LibPNG-t.build/Objects-normal/x86_64/Modules/LibPNG.swiftmodule
error: Build failed
BUILD FAILURE 6.4 linux