evgenijlutz/libpng

Precompiled [libpng](https://github.com/pnggroup/libpng) library for all Apple platforms and architectures, including simulators.

Installing LibPNG

Add the following dependency to your Package.swift:

.package(url: "https://github.com/EvgenijLutz/LibPNG.git", from: "1.6.50-alpha3")

And you're good to go!

Dependencies

libpng relies on zlib (general purpose lossless data compression) and bz2 (compression method that uses the Burrows–Wheeler algorithm) libraries, that are already shipped with all Apple operating systems. Client applications need to link these two libraries in order to compile successfully, which is already taken care by this package:

linkerSettings: [
    // Links libz.tbd that comes with all Apple systems
    .linkedLibrary("z"),
    // Links libbz2.tbd that comes with all Apple systems
    .linkedLibrary("bz2")
]

Next steps

Support binaries for other platforms beyond Apple.

Build

Built with libpng 1.6.50 and Xcode 16.4.

Download libpng and copy the build-apple-make.sh and module.modulemap files from the LibPNG/Resources/Build into the libpng directory:

cp Path/To/LibPNG/Resources/Build/build-apple-make.sh libpng/build-apple-make.sh
cp Path/To/LibPNG/Resources/Build/module.modulemap libpng/module.modulemap

Move the the libpng directory:

cd libpng

And execute the script:

bash build-apple-make.sh

When everything succeeds, you get png.xcframework in the build-apple directory. Voilà!

Package Metadata

Repository: evgenijlutz/libpng

Default branch: main

README: README.md