FROM ubuntu:18.04

RUN apt-get update -qq && apt-get install -qqy --no-install-recommends \
    git wget bzip2 file unzip libtool pkg-config cmake build-essential \
    automake yasm gettext autopoint vim-tiny python3 python3-distutils \
    ninja-build ca-certificates curl less && \
    apt-get clean -y && \
    rm -rf /var/lib/apt/lists/*

RUN cd /opt && \
    wget https://github.com/Kitware/CMake/releases/download/v3.16.2/cmake-3.16.2-Linux-x86_64.tar.gz && \
    tar -zxvf cmake-*.tar.gz && \
    rm cmake-*.tar.gz && \
    mv cmake-* cmake
ENV PATH=/opt/cmake/bin:$PATH


RUN git config --global user.name "LLVM MinGW" && \
    git config --global user.email root@localhost

WORKDIR /build

ENV TOOLCHAIN_PREFIX=/opt/llvm-mingw

ARG FULL_LLVM

# Build LLVM
COPY build-llvm.sh ./
RUN ./build-llvm.sh $TOOLCHAIN_PREFIX

# Strip the LLVM install output immediately. (This doesn't reduce the
# total docker image size as long as it is in a separate RUN layer though,
# but reduces build times if tweaking the contents of strip-llvm.sh.)
# Most of the size of the docker image comes from the build directory that
# we keep in any case.
COPY strip-llvm.sh ./
RUN ./strip-llvm.sh $TOOLCHAIN_PREFIX

ARG TOOLCHAIN_ARCHS="i686 x86_64 armv7 aarch64"

# Install the usual $TUPLE-clang binaries
COPY wrappers/*.sh wrappers/*.c wrappers/*.h ./wrappers/
COPY install-wrappers.sh ./
RUN ./install-wrappers.sh $TOOLCHAIN_PREFIX

ARG DEFAULT_CRT=ucrt

# Build MinGW-w64
COPY build-mingw-w64.sh ./
RUN ./build-mingw-w64.sh $TOOLCHAIN_PREFIX --with-default-msvcrt=$DEFAULT_CRT

COPY build-mingw-w64-tools.sh ./
RUN ./build-mingw-w64-tools.sh $TOOLCHAIN_PREFIX

# Build compiler-rt
COPY build-compiler-rt.sh ./
RUN ./build-compiler-rt.sh $TOOLCHAIN_PREFIX

# Build mingw-w64's extra libraries
COPY build-mingw-w64-libraries.sh ./
RUN ./build-mingw-w64-libraries.sh $TOOLCHAIN_PREFIX

# Build C test applications
ENV PATH=$TOOLCHAIN_PREFIX/bin:$PATH

COPY test/*.c test/*.h test/*.idl ./test/
RUN cd test && \
    for arch in $TOOLCHAIN_ARCHS; do \
        mkdir -p $arch && \
        for test in hello hello-tls crt-test setjmp; do \
            $arch-w64-mingw32-clang $test.c -o $arch/$test.exe || exit 1; \
        done; \
        for test in autoimport-lib; do \
            $arch-w64-mingw32-clang $test.c -shared -o $arch/$test.dll -Wl,--out-implib,$arch/lib$test.dll.a || exit 1; \
        done; \
        for test in autoimport-main; do \
            $arch-w64-mingw32-clang $test.c -o $arch/$test.exe -L$arch -l${test%-main}-lib || exit 1; \
        done; \
        for test in idltest; do \
            # The IDL output isn't arch specific, but test each arch frontend \
            $arch-w64-mingw32-widl $test.idl -h -o $arch/$test.h && \
            $arch-w64-mingw32-clang $test.c -I$arch -o $arch/$test.exe -lole32 || exit 1; \
        done; \
    done

# Build libunwind/libcxxabi/libcxx
COPY build-libcxx.sh ./
RUN ./build-libcxx.sh $TOOLCHAIN_PREFIX

# Build C++ test applications
COPY test/*.cpp ./test/
RUN cd test && \
    for arch in $TOOLCHAIN_ARCHS; do \
        mkdir -p $arch && \
        for test in hello-cpp hello-exception tlstest-main exception-locale exception-reduced global-terminate; do \
            $arch-w64-mingw32-clang++ $test.cpp -o $arch/$test.exe || exit 1; \
        done; \
        for test in hello-exception; do \
            $arch-w64-mingw32-clang++ $test.cpp -static -o $arch/$test-static.exe || exit 1; \
        done; \
        for test in tlstest-lib throwcatch-lib; do \
            $arch-w64-mingw32-clang++ $test.cpp -shared -o $arch/$test.dll -Wl,--out-implib,$arch/lib$test.dll.a || exit 1; \
        done; \
        for test in throwcatch-main; do \
            $arch-w64-mingw32-clang++ $test.cpp -o $arch/$test.exe -L$arch -l${test%-main}-lib || exit 1; \
        done; \
    done

# Build sanitizers. Ubsan includes <typeinfo> from the C++ headers, so
# we need to build this after libcxx.
RUN ./build-compiler-rt.sh $TOOLCHAIN_PREFIX --build-sanitizers

# Sanitizers on windows only support x86.
RUN cd test && \
    for arch in $TOOLCHAIN_ARCHS; do \
        case $arch in \
        i686|x86_64) \
            ;; \
        *) \
            continue \
            ;; \
        esac && \
        for test in stacksmash; do \
            $arch-w64-mingw32-clang $test.c -o $arch/$test-asan.exe -fsanitize=address -g -gcodeview -Wl,-pdb,$arch/$test-asan.pdb || exit 1; \
        done; \
        for test in ubsan; do \
            $arch-w64-mingw32-clang $test.c -o $arch/$test.exe -fsanitize=undefined || exit 1; \
        done; \
    done

# Build libssp
COPY build-libssp.sh libssp-Makefile ./
RUN ./build-libssp.sh $TOOLCHAIN_PREFIX

RUN cd test && \
    for arch in $TOOLCHAIN_ARCHS; do \
        mkdir -p $arch && \
        for test in stacksmash; do \
            $arch-w64-mingw32-clang $test.c -o $arch/$test.exe -fstack-protector-strong || exit 1; \
        done; \
    done

# Build UASM, for building openmp. In the future, llvm-ml should be able
# to handle it, but it doesn't yet.
RUN git clone https://github.com/Terraspace/UASM && \
    cd UASM && \
    git checkout 16a853bd6de807fe2c42569f8375a029684c0f22 && \
    make -f gccLinux64.mak -j$(nproc) && \
    mkdir -p $TOOLCHAIN_PREFIX/bin && \
    cp GccUnixR/uasm $TOOLCHAIN_PREFIX/bin
COPY wrappers/uasm-wrapper.sh $TOOLCHAIN_PREFIX/bin
# Build OpenMP
COPY build-openmp.sh ./
RUN ./build-openmp.sh $TOOLCHAIN_PREFIX

# OpenMP on windows only supports x86.
RUN cd test && \
    for arch in $TOOLCHAIN_ARCHS; do \
        case $arch in \
        i686|x86_64) \
            ;; \
        *) \
            continue \
            ;; \
        esac && \
        for test in hello-omp; do \
            $arch-w64-mingw32-clang $test.c -o $arch/$test.exe -fopenmp=libomp || exit 1; \
        done; \
    done

RUN cd test && \
    for arch in $TOOLCHAIN_ARCHS; do \
        cp $TOOLCHAIN_PREFIX/$arch-w64-mingw32/bin/*.dll $arch || exit 1; \
    done