FROM scratch as base
ENV VERSION=3.27.8
ENV SRC_HASH=fece24563f697870fbb982ea8bf17482c9d5f855d8c9bf0b82463d76c9e8d0cc
ENV SRC_FILE=cmake-${VERSION}.tar.gz
ENV SRC_SITE=https://cmake.org/files/v3.27/${SRC_FILE}

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/ninja . /
COPY --from=stagex/musl . /
COPY --from=stagex/make . /
COPY --from=stagex/linux-headers . /
COPY --from=stagex/gcc . /
COPY --from=stagex/zlib . /
COPY --from=stagex/openssl . /
RUN tar -xf ${SRC_FILE}
WORKDIR cmake-${VERSION}
RUN --network=none <<-EOF
	set -eux
	./bootstrap \
		--prefix=/usr \
		--mandir=/share/man \
		--datadir=/share/cmake \
		--docdir=/share/doc/cmake \
		--no-system-cppdap \
		--no-system-curl \
		--no-system-jsoncpp \
		--generator=Ninja || cat /cmake-3.27.8/Bootstrap.cmk/cmake_bootstrap.log
	ninja
EOF

FROM build as install
RUN --network=none DESTDIR=/rootfs bin/cmake -P cmake_install.cmake
RUN find /rootfs -exec touch -hcd "@0" "{}" +

FROM scratch as package
COPY --from=install /rootfs /