From e9d849c4ce92c7160ebd7c5e1380fd433610dcb9 Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi92@disroot.org>
Date: Sun, 8 Feb 2026 22:35:51 +0100
Subject: Add libpng-1.6.54

---
 libpng/1.6.54/Dockerfile | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 libpng/1.6.54/Dockerfile

diff --git a/libpng/1.6.54/Dockerfile b/libpng/1.6.54/Dockerfile
new file mode 100644
index 0000000..ba81a53
--- /dev/null
+++ b/libpng/1.6.54/Dockerfile
@@ -0,0 +1,20 @@
+FROM alpine as base
+ARG PREFIX=/usr/local
+ARG DESTDIR=/opt/spm/libpng-1.6.54
+RUN apk update && apk add \
+	make \
+	gcc \
+	pkgconf \
+	musl-dev \
+	wget
+RUN wget -O libpng-1.6.54.tar.gz https://sourceforge.net/projects/libpng/files/libpng16/1.6.54/libpng-1.6.54.tar.gz/download
+RUN tar -xf libpng-1.6.54.tar.gz
+WORKDIR /build-libpng
+COPY --from=zlib:1.3.1 /opt/spm/zlib-1.3.1 /usr/local/
+RUN CFLAGS='-ffunction-sections -fdata-sections -Os' \
+    ../libpng-1.6.54/configure \
+    --enable-shared=no
+RUN make -j$(nproc)
+RUN make install DESTDIR=$DESTDIR
+FROM scratch
+COPY --from=base /opt/spm/libpng-1.6.54/usr/local/ /opt/spm/libpng-1.6.54/
-- 
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