FROM scratch AS base
ARG ARCH=x86_64
ENV VERSION=1.0.20
ENV SRC_HASH=ebb65ef6ca439333c2bb41a0c1990587288da07f6c7fd07cb3a18cc18d30ce19
ENV SRC_FILE=libsodium-${VERSION}.tar.gz
ENV SRC_SITE=https://github.com/jedisct1/libsodium/releases/download/${VERSION}-RELEASE/libsodium-${VERSION}.tar.gz

FROM base AS fetch
ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .

FROM fetch AS build
COPY --from=stagex/busybox . /
COPY --from=stagex/binutils . /
COPY --from=stagex/musl . /
COPY --from=stagex/make . /
COPY --from=stagex/gcc . /
RUN tar -xf ${SRC_FILE}
WORKDIR libsodium-${VERSION}
RUN --network=none <<-EOF
	set -ex
	./configure \
		--build=${ARCH}-linux-musl \
		--host=${ARCH}-linux-musl \
		--prefix=/usr
	make -j "$(nproc)"
EOF

FROM build AS install
RUN --network=none <<-EOF
	set -eu
	make DESTDIR="/rootfs" install
EOF

FROM stagex/filesystem AS package
COPY --from=install /rootfs/. /