stripped busybox

getbusy.sh

#!/usr/bin/env bash
set -euo pipefail

CR=$'\r'

openssl s_client -connect busybox.net:443 -quiet 2>/dev/null <<EOF | sed '1,/^\r$/d' > busybox-1.38.0.tar.bz2
GET /downloads/busybox-1.38.0.tar.bz2 HTTP/1.1${CR}
Host: busybox.net${CR}
Connection: close${CR}
${CR}
EOF

tar -xjf busybox-1.38.0.tar.bz2 
cd busybox-1.38.0

make allnoconfig

for applet in ASH SH_IS_ASH LS CAT ECHO PWD; do
    sed -i "s/# CONFIG_$applet is not set/CONFIG_$applet=y/" .config
done

sed -i 's/# CONFIG_STATIC is not set/CONFIG_STATIC=y/' .config
sed -i 's/# CONFIG_STRIP is not set/CONFIG_STRIP=y/' .config
sed -i 's/# CONFIG_BUILD_OPTIMIZED_FOR_SIZE is not set/CONFIG_BUILD_OPTIMIZED_FOR_SIZE=y/' .config

make silentoldconfig
make -j"$(nproc)"