ports: Add libspng port

ports/libspng/build.sh

@@ -0,0 +1,27 @@
+#!/bin/bash ../install.sh
+
+NAME='libspng'
+VERSION='0.7.4'
+DOWNLOAD_URL="https://github.com/randy408/libspng/archive/v0.7.4.tar.gz#47ec02be6c0a6323044600a9221b049f63e1953faf816903e7383d4dc4234487"
+DEPENDENCIES=('zlib')
+CONFIGURE_OPTIONS=(
+	'-Dprefix=/usr'
+	'-Dbuildtype=release'
+	'-Dbuild_examples=false'
+)
+
+configure() {
+	meson setup \
+		--reconfigure \
+		--cross-file "$MESON_CROSS_FILE" \
+		"${CONFIGURE_OPTIONS[@]}" \
+		build || exit 1
+}
+
+build() {
+	meson compile -C build || exit 1
+}
+
+install() {
+	meson install --destdir="$DESTDIR" -C build || exit 1
+}