ports: Add gtk3 port

ports/libxml2/build.sh

@@ -0,0 +1,26 @@
+#!/bin/bash ../install.sh
+
+NAME='libxml2'
+VERSION='2.15.1'
+DOWNLOAD_URL="https://gitlab.gnome.org/GNOME/libxml2/-/archive/v$VERSION/libxml2-v$VERSION.tar.gz#0a5ebf8fa131585748d661ae692503483aff39d9b29b6c4b342cd80d422f246c"
+TAR_CONTENT="libxml2-v$VERSION"
+DEPENDENCIES=('zlib' 'libiconv')
+CONFIGURE_OPTIONS=(
+	'-Dprefix=/usr'
+)
+
+configure() {
+	meson setup \
+		--reconfigure \
+		--cross-file "$MESON_CROSS_FILE" \
+		"${CONFIGURE_OPTIONS[@]}" \
+		build || exit 1
+}
+
+build() {
+	meson compile -C build || exit 1
+}
+
+install() {
+	meson install --destdir="$BANAN_SYSROOT" -C build || exit 1
+}