ARG ORG=dockcross
FROM ${ORG}/base:latest

LABEL maintainer="Matt McCormick matt.mccormick@kitware.com"

ENV WASI_VERSION 19
ENV WASI_VERSION_FULL ${WASI_VERSION}.0
RUN cd /usr/ && \
  curl -L -O https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_VERSION}/wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz && \
  tar xvzf wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz && \
  rm wasi-sdk-${WASI_VERSION_FULL}-linux.tar.gz
ENV WASI_SYSROOT /usr/wasi-sdk-${WASI_VERSION_FULL}/share/wasi-sysroot
ENV WASI_SDK_PATH /usr/wasi-sdk-${WASI_VERSION_FULL}

ENV LLVM_VERSION 15

# Build LLVM / Clang that supports our glibc
RUN apt-get update && \
    # Temporarily install to setup apt repositories
    apt-get install -y && \
\
    curl -sS https://apt.llvm.org/llvm-snapshot.gpg.key | gpg --dearmor > /etc/apt/trusted.gpg.d/llvm.gpg && \
    echo "deb [signed-by=/etc/apt/trusted.gpg.d/llvm.gpg] http://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-${LLVM_VERSION} main" >> /etc/apt/sources.list.d/llvm.list && \
    echo "deb-src [signed-by=/etc/apt/trusted.gpg.d/llvm.gpg] http://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-${LLVM_VERSION} main" >> /etc/apt/sources.list.d/llvm.list && \
\
    apt-get update && \
    apt-get install -y clang-${LLVM_VERSION} lld-${LLVM_VERSION} && \
    rm -rf /var/lib/apt/lists/*

# The path to the rt directory contains the LLVM patch version which is not reflected in the LLVM apt repository
# or package. To make adding the RT robust to changing patch versions without needing to duplicate the folder
# content, we copy after extracting using a bash glob to resolve the patch version
RUN cd /usr/ && \
  curl -L -O https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_VERSION}/libclang_rt.builtins-wasm32-wasi-${WASI_VERSION_FULL}.tar.gz && \
  tar xvzf libclang_rt.builtins-wasm32-wasi-${WASI_VERSION_FULL}.tar.gz && \
  rm libclang_rt.builtins-wasm32-wasi-${WASI_VERSION_FULL}.tar.gz && \
  ln -s /usr/lib/wasi/ $(echo /usr/lib/llvm-${LLVM_VERSION}/lib/clang/${LLVM_VERSION}.*)/lib/wasi

COPY clang-wasi-sysroot.sh clang++-wasi-sysroot.sh /usr/local/bin/

ENV CROSS_TRIPLE=wasm32-wasi
ENV CROSS_ROOT=${WASI_SDK_PATH}
ENV AR=llvm-ar-${LLVM_VERSION} \
    CC=clang-wasi-sysroot.sh \
    CXX=clang++-wasi-sysroot.sh \
    LD=wasm-ld-${LLVM_VERSION} \
    RANLIB=llvm-ranlib-${LLVM_VERSION}

#include "common.webassembly"

COPY WASI.cmake /usr/src/
RUN mv /usr/src/WASI.cmake /usr/share/cmake-*/Modules/Platform/
COPY *.cmake /usr/src/
RUN mv /usr/src/*.cmake /usr/share/cmake-*/Modules/
COPY CheckTypeSize.c.in /usr/src/
RUN mv /usr/src/CheckTypeSize.c.in /usr/share/cmake-*/Modules/
COPY Toolchain.cmake ${CROSS_ROOT}/
ENV CMAKE_TOOLCHAIN_FILE ${CROSS_ROOT}/Toolchain.cmake

#include "common.label-and-env"