FROM scratch AS base
ENV VERSION=6.04-pre1
ENV SRC_HASH=3f6d50a57f3ed47d8234fd0ab4492634eb7c9aaf7dd902f33d3ac33564fd631d
ENV SRC_FILE=syslinux-${VERSION}.tar.xz
ENV SRC_SITE=https://www.kernel.org/pub/linux/utils/boot/syslinux/Testing/6.04/${SRC_FILE}

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

FROM fetch AS build
COPY --from=stagex/busybox . /
COPY --from=stagex/gcc . /
COPY --from=stagex/binutils . /
COPY --from=stagex/make . /
COPY --from=stagex/perl . /
COPY --from=stagex/musl . /
COPY --from=stagex/util-linux . /
COPY --from=stagex/linux-headers . /
RUN tar -xf ${SRC_FILE}
WORKDIR /syslinux-${VERSION}
COPY *.patch .
RUN --network=none <<-EOF
    patch -p1 < fix-sysmacros.patch
    patch -p1 < prevent-pow-optimization.patch
    patch -p1 < gcc-10.patch
    make -j1 bios efi64 installer
EOF

FROM build AS install
RUN make -j1 \
    INSTALLROOT="/rootfs" \
    MANDIR=/usr/share/man \
    BINDIR=/usr/bin \
    SBINDIR=/usr/sbin \
    LIBDIR=/usr/lib \
    install

FROM base AS test
COPY --from=install /rootfs/. /
COPY --from=stagex/musl . /
COPY --from=stagex/busybox . /
RUN syslinux --version

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