build busybox binaries

build-busybox.sh

#!/bin/sh

#ARCHS=${ARCHS:-"aarch64-linux-gnu mipsel-linux-gnu"}
ARCHS=${ARCHS:-"arm-linux-gnueabi arm-linux-gnueabihf powerpc64le-linux-gnu aarch64-linux-gnu mipsel-linux-gnu"}

set -e

busybox_version='busybox-1.35.0'
busybox_archive="${busybox_version}.tar.bz2"
busybox_url="https://busybox.net/downloads/${busybox_archive}"

if [ ! -f ./${busybox_archive} ]; then
        curl -O ${busybox_url}
fi

for arch in ${ARCHS}; do
        mkdir -p "work/${arch}"
        mkdir -p "build"

        cp ${busybox_archive} work/${arch}
        tar jvxf work/${arch}/${busybox_archive} -C work/${arch}/

        docker run -v $(pwd)/work/${arch}/${busybox_version}:/workdir -e QEMU_LD_PREFIX=/usr/${arch}/ -e CROSS_TRIPLE=${arch} multiarch/crossbuild "/bin/sh" "-c" "make defconfig;make CONFIG_STATIC=y"

        if [ "$?" -eq "0" ]; then
                cp work/${arch}/${busybox_version}/busybox build/busybox-${arch}
        fi
done