png: add libpng port

build.sh

 source "${PREFIX_PROJECT}/phoenix-rtos-ports/build.subr" 
 source "${PREFIX_PROJECT}/phoenix-rtos-ports/build.subr" 
@@ -63,6 +63,7 @@ ports=(
 	"picocom"
 	"fs_mark"
 	"coremark"
+	"png"
 )
 
 

png/build.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+set -e
+
+
+extract_sources() {
+  if [ ! -d "${PREFIX_PORT_SRC}" ]; then
+    echo "Extracting sources from ${archive_filename}"
+    mkdir -p "${PREFIX_PORT_SRC}"
+    tar -axf "${PREFIX_PORT}/${archive_filename}" --strip-components 1 -C "${PREFIX_PORT_SRC}"
+  fi
+}
+
+
+exec_configure() {
+  (cd "${PREFIX_PORT_SRC}" &&
+    "${PREFIX_PORT_SRC}/configure" CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
+    --host="${HOST%phoenix}linux" --bindir="${PREFIX_PROG}" --sbindir="${PREFIX_PROG}" \
+    --libdir="${PREFIX_A}" --includedir="${PREFIX_H}" \
+    --prefix="${PREFIX_PORT_INSTALL}" --datarootdir="${PREFIX_A}" "${@}" \
+    --disable-shared --enable-static --enable-silent-rules
+  )
+}
+
+
+build_libpng() {
+  appname="libpng"
+  version="1.6.44"
+
+  b_log "png: building ${appname}"
+
+  archive_filename="${appname}-${version}.tar.gz"
+  PREFIX_PORT_SRC="${PREFIX_PORT_BUILD}/${appname}/${version}"
+  b_port_download "http://prdownloads.sourceforge.net/libpng/" "${archive_filename}"
+
+  extract_sources
+
+  echo  "${appname}/${version}"
+  b_port_apply_patches "${PREFIX_PORT_SRC}" "${appname}/${version}"
+
+  if [ ! -f "${PREFIX_PORT_SRC}/config.status" ]; then
+    exec_configure
+  fi
+
+  make -C "${PREFIX_PORT_SRC}" PREFIX="${PREFIX_PORT_BUILD}"
+  make -C "${PREFIX_PORT_SRC}" PREFIX="${PREFIX_PORT_BUILD}" install
+}
+
+
+build_libpng
+
+
+rm -rf "$TMP_DIR"

png/patches/libpng/1.6.44/01-Makefile.am.patch

@@ -0,0 +1,12 @@
+diff -ruN a/Makefile.am b/Makefile.am
+--- a/Makefile.am	2024-10-18 10:20:12.884467503 +0200
++++ b/Makefile.am	2024-10-18 10:19:21.813487165 +0200
+@@ -301,7 +301,7 @@
+ 	rm -f $@ $*.tf[12]
+ 	test -d scripts || mkdir scripts || test -d scripts
+ 	$(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES)\
+-	    $(CPPFLAGS) $(SYMBOL_CFLAGS) $< > $*.tf1
++	    $(CFLAGS) $(CPPFLAGS) $(SYMBOL_CFLAGS) $< > $*.tf1
+ 	$(AWK) -f "${srcdir}/scripts/dfn.awk" out="$*.tf2" $*.tf1 1>&2
+ 	rm -f $*.tf1
+ 	mv $*.tf2 $@