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FROM ubuntu:20.04
RUN apt-get update && apt-get install -y --no-install-recommends \
gcc libc6-dev qemu-user ca-certificates qemu-system-mipsel curl \
xz-utils patch
RUN mkdir /toolchain
# Linux kernel version: 5.4.154
# See build_dir/target-mipsel_mips32_musl/linux-brcm47xx_generic/linux-5.4.154
# Musl version: 1.1.24
# See staging_dir/toolchain-mipsel_mips32_gcc-8.4.0_musl/info.mk
RUN curl --retry 5 -L https://downloads.openwrt.org/releases/21.02.1/targets/bcm47xx/generic/openwrt-sdk-21.02.1-bcm47xx-generic_gcc-8.4.0_musl.Linux-x86_64.tar.xz | \
tar xJf - -C /toolchain --strip-components=1
# See https://lkml.org/lkml/2014/3/14/269
COPY sysinfo_guard.patch /toolchain
RUN patch /toolchain/staging_dir/toolchain-mipsel_mips32_gcc-8.4.0_musl/include/linux/kernel.h </toolchain/sysinfo_guard.patch
ENV PATH=$PATH:/rust/bin:/toolchain/staging_dir/toolchain-mipsel_mips32_gcc-8.4.0_musl/bin \
STAGING_DIR=/toolchain/staging_dir \
CC_mipsel_unknown_linux_musl=mipsel-openwrt-linux-musl-gcc \
CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_MUSL_LINKER=mipsel-openwrt-linux-musl-gcc \
CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_MUSL_RUNNER="qemu-mipsel -L /toolchain/staging_dir/toolchain-mipsel_mips32_gcc-8.4.0_musl" \
RUSTFLAGS="-L /toolchain/staging_dir/toolchain-mipsel_mips32_gcc-8.4.0_musl/lib"
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