1FROM ubuntu:22.04 2 3RUN apt-get update && apt-get install -y --no-install-recommends \ 4 gcc libc6-dev qemu-user ca-certificates qemu-system-arm curl \ 5 xz-utils patch file 6 7RUN mkdir /toolchain 8 9RUN curl --retry 5 -L https://toolchains.bootlin.com/downloads/releases/toolchains/armv7-eabihf/tarballs/armv7-eabihf--uclibc--bleeding-edge-2021.11-1.tar.bz2 | \ 10 tar xjf - -C /toolchain --strip-components=1 11RUN /toolchain/relocate-sdk.sh 12 13ENV PATH=$PATH:/rust/bin:/toolchain/bin \ 14 STAGING_DIR=/toolchain/armv7-buildroot-linux-uclibceabihf/sysroot \ 15 CC_armv7_unknown_linux_uclibceabihf=arm-buildroot-linux-uclibcgnueabihf-gcc \ 16 CARGO_TARGET_ARMV7_UNKNOWN_LINUX_UCLIBCEABIHF_LINKER=arm-buildroot-linux-uclibcgnueabihf-gcc \ 17 CARGO_TARGET_ARMV7_UNKNOWN_LINUX_UCLIBCEABIHF_RUNNER="qemu-arm -L /toolchain/arm-buildroot-linux-uclibcgnueabihf/sysroot/" 18