Swift Package Index

Build Information

Failed to build LibPNG, reference master (c059e4), with Swift 6.3 for Linux on 14 Apr 2026 18:10:37 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
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:             6.3
Building package at path:  $PWD
https://github.com/LuizZak/swift-libpng.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:5a7d791d2ead8a924b1292cb31bf3288eabcfe8880e0b005b00b45b71a5bc36a
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest
warning: you may be able to install libpng using your system-packager:
    apt-get install libpng-dev
warning: you may be able to install libpng using your system-packager:
    apt-get install libpng-dev
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/5] Emitting module LibPNG
<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 {
[4/5] Compiling LibPNG LibPNG+FromData.swift
<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 {
[5/5] Compiling LibPNG LibPNG.swift
<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 {
BUILD FAILURE 6.3 linux