FROM scratch AS base
ENV VERSION=16.0.6
ENV SRC_HASH=ce5e71081d17ce9e86d7cbcfa28c4b04b9300f8fb7e78422b1feb6bc52c3028e
ENV SRC_FILE=llvm-project-${VERSION}.src.tar.xz
ENV SRC_SITE=https://github.com/llvm/llvm-project/releases/download/llvm-org-${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/binutils . /
COPY --from=stagex/cmake . /
COPY --from=stagex/ninja . /
COPY --from=stagex/musl . /
COPY --from=stagex/gcc . /
COPY --from=stagex/python . /
COPY --from=stagex/py-setuptools . /
COPY --from=stagex/openssl . /
COPY --from=stagex/gcc . /
COPY --from=stagex/llvm . /
COPY --from=stagex/zlib . /

RUN tar -xf ${SRC_FILE}
WORKDIR llvm-project-${VERSION}.src
RUN --network=none <<-EOF
    set -eux
    cmake \
        -S clang \
        -B build \
        -G Ninja \
        -Wno-dev \
		-DCMAKE_BUILD_TYPE=Release \
		-DCMAKE_INSTALL_PREFIX=/usr/ \
		-DCMAKE_INSTALL_RPATH=/usr/ \
		-DCLANG_BUILT_STANDALONE=ON \
		-DCLANG_LINK_CLANG_DYLIB=ON \
		-DCLANG_PLUGIN_SUPPORT=ON \
		-DCLANG_VENDOR=stagex \
		-DLIBCLANG_BUILD_STATIC=ON
	cmake --build build
EOF

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

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