fetch $ZLIB_URL

sudo chroot "$SYSROOT" /usr/bin/env -i MAKEFLAGS="$MAKEFLAGS" PATH=/usr/bin:/usr/sbin SOURCES=/sources ZLIB_VERSION=$ZLIB_VERSION /usr/bin/bash <<- "EOF"
	set -euo pipefail

	cd "$SOURCES" && tar xf zlib-$ZLIB_VERSION.tar.gz && cd zlib-$ZLIB_VERSION

	./configure \
		--prefix=/usr
	
	make && make install

	rm -f /usr/lib/libz.a

	cd "$SOURCES" && rm -rf zlib-$ZLIB_VERSION
EOF