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rgbds/.github/scripts/build_libpng.sh
2025-11-22 19:05:52 -05:00

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#!/bin/bash
set -euo pipefail
pngver=1.6.51
## Grab sources and check them
curl -LOJ "http://prdownloads.sourceforge.net/libpng/libpng-$pngver.tar.xz?download"
# Brew doesn't provide any sha256sum, so we're making do with `sha2` instead.
if [ "$(sha2 -q -256 libpng-$pngver.tar.xz)" != a050a892d3b4a7bb010c3a95c7301e49656d72a64f1fc709a90b8aded192bed2 ]; then
sha2 -256 libpng-$pngver.tar.xz
echo Checksum mismatch! Aborting. >&2
exit 1
fi
## Extract sources and patch them
tar -xvf libpng-$pngver.tar.xz
## Start building!
mkdir -p build
cd build
../libpng-$pngver/configure --disable-shared --enable-static \
CFLAGS="-O3 -flto -DNDEBUG -mmacosx-version-min=10.9 -arch x86_64 -arch arm64 -fno-exceptions"
make -kj
make install prefix="$PWD/../libpng-staging"