LLVM cross-compile

Dockerfile

FROM debian:buster

RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get -y install \
    build-essential cmake gawk libncurses-dev libc6-dev intltool python \
    git subversion time unzip zlib1g-dev libssl-dev wget curl cpio bc \
    gettext gettext-base liblocale-gettext-perl upx \
    flex texinfo help2man libtool-bin byacc bison pkg-config libyaml-dev \
    rsync software-properties-common lsb-release

RUN bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)"

ENV PATH /usr/lib/llvm-10/bin/:${PATH}

WORKDIR /src/

# COPY ./musl-1.2.0.tar.gz ./
# RUN tar -xvf ./musl-1.2.0.tar.gz
# RUN make TARGET=armv5-linux-musleabi install

RUN echo "#include <stdio.h>\n\
int main(int argc, char **argv) {\n\
    // printf(\"hello world\");\n\
}\n\
" >> main.c

RUN clang main.c
RUN ./a.out

RUN clang --target=armv5-unknown-linux-musleabi main.c