dockerfile for riscv_toolchain

dockerfile

FROM ubuntu:18.04
MAINTAINER BeMg

RUN apt-get update && apt-get install -y git autoconf automake autotools-dev curl libmpc-dev libmpfr-dev libgmp-dev libusb-1.0-0-dev gawk \
 build-essential bison flex device-tree-compiler texinfo gperf libtool patchutils bc zlib1g-dev device-tree-compiler pkg-config libexpat-dev && mkdir risc-v
ENV RISCV /risc-v
RUN cd ~ && git clone -b rvv-0.7.x --recursive https://github.com/riscv/riscv-gnu-toolchain && \
    cd riscv-gnu-toolchain && ./configure --prefix=$RISCV --with-arch=rv64gcv --with-abi=lp64 && make -j4
ENV PATH="/risc-v/bin:${PATH}"
RUN cd ~ && git clone https://github.com/riscv/riscv-pk.git && \
    cd riscv-pk && mkdir build && cd build && \
    ../configure --prefix=$RISCV --host=riscv64-unknown-elf && \
    make -j4 && make install -j4
RUN cd ~ && git clone https://github.com/riscv/riscv-isa-sim.git && \
    cd riscv-isa-sim && mkdir build && cd build && \
    ../configure --prefix=$RISCV && make -j4 && make install -j6