ARG VERSION=16.0.6
FROM stagex/llvm:${VERSION} AS llvm

FROM stagex/busybox as base
ARG VERSION
ENV VERSION=${VERSION}
ENV SRC_VERSION=${VERSION}
ENV SRC_SITE=https://github.com/llvm/llvm-project/releases/download
ENV SRC_HASH_13_0_1=326335a830f2e32d06d0a36393b5455d17dc73e0bd1211065227ee014f92cbf8
ENV SRC_HASH_16_0_6=ce5e71081d17ce9e86d7cbcfa28c4b04b9300f8fb7e78422b1feb6bc52c3028e
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 . /

FROM base as fetch
RUN wget --no-check-certificate ${SRC_SITE}/llvmorg-${SRC_VERSION}/llvm-project-${SRC_VERSION}.src.tar.xz
RUN echo "$(printenv SRC_HASH_${VERSION//./_})  llvm-project-${SRC_VERSION}.src.tar.xz" | sha256sum -c

FROM fetch as build
RUN tar -xf llvm-project-${SRC_VERSION}.src.tar.xz
WORKDIR llvm-project-${SRC_VERSION}.src
ADD . .
RUN set -eux; \
    cmake \
        -B build \
        -G Ninja \
        -Wno-dev -S clang \
		-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

FROM build as install
USER 0:0
RUN set -eux; DESTDIR="/rootfs" cmake --install build
COPY --from=stagex/musl /lib/* /rootfs/lib/
COPY --from=stagex/gcc /usr/lib/* /rootfs/usr/lib/
COPY --from=stagex/gcc /usr/lib64/* /rootfs/usr/lib/
COPY --from=llvm /usr/lib/* /rootfs/usr/lib
RUN find /rootfs -exec touch -hcd "@0" "{}" +

FROM scratch as package
COPY --from=install /rootfs /
USER 100:100
ENTRYPOINT ["/usr/bin/clang"]
CMD ["--version"]