FROM scratch as base
ENV VERSION=2.16.03
ENV SRC_HASH=86876a745e3d224dcfd222ed3de465b47559e85811df2db9820ef09a9dff5cce
ENV SRC_FILE=nasm-${VERSION}.tar.xz
ENV SRC_SITE=https://www.nasm.us/pub/nasm/releasebuilds/${VERSION}/${SRC_FILE}}

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

FROM fetch as build
COPY --from=stagex/busybox . /
COPY --from=stagex/gcc . /
COPY --from=stagex/binutils . /
COPY --from=stagex/make . /
COPY --from=stagex/bison . /
COPY --from=stage/flex . /
COPY --from=stagex/musl . /
COPY --from=stagex/perl . /
RUN tar -xf ${SRC_FILE}
WORKDIR nasm-${VERSION}
RUN --network=none <<-EOF
	set -eux
		CFLAGS="$CFLAGS -O2 -flto=auto" \
	./configure \
        --build=x86_64-linux-musl \
        --host=x86_64-linux-musl \
		--prefix=/usr
	make -j "$(nproc)"
EOF

FROM build AS install
RUN --network=none DESTDIR=/rootfs make install

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