make_standalone.sh

#!/bin/bash

DISTRO=$(awk -F= '/^ID=/ {print $2}' /etc/os-release)
LIB_DIR=lib
RPATH="\$ORIGIN"

case $DISTRO in
  alpine) LIBC=musl;;
  debian|ubuntu) LIBC=glibc;;
  *) echo 'Not supported yet'; exit 1
esac

if [[ $LIBC == "musl" ]]; then
  LD_FILE=$(readlink -f /$(apk info -qL musl | grep 'ld-musl') | xargs basename)
elif [[ $LIBC == "glibc" ]]; then
  LD_FILE=$(dpkg -L libc6 | grep "$(dpkg-architecture -qDEB_BUILD_MULTIARCH)/ld-linux" | xargs basename)
  # LD_FILE=$(basename $(ldconfig -p | awk -v var="$(dpkg-architecture -qDEB_BUILD_MULTIARCH)/ld-" '$4 ~ var {print $4}'))
fi

mkdir -p $LIB_DIR
readarray -t files < <(find . -type f -exec sh -c 'file -b {} | grep -q ELF' \; -printf '%P\n')
for file in "${files[@]}"; do
  c=$(awk -F/ '{print NF-1}' <<< $file)
  str=
  if (( $c > 0 )); then
    for (( i=1; i<=$c; i++ )); do str+="../"; done
  fi
  str+="$LIB_DIR"
  echo $file
  strip $file
  ldd $file | awk '/=>/ {print $3}' | xargs -I{} cp -vL {} $LIB_DIR
  patchelf --set-rpath $RPATH/$str $file
  patchelf --print-interpreter $file >/dev/null 2>&1 && patchelf --set-interpreter $str/$LD_FILE $file
done

if [[ $LIBC == "glibc" ]]; then
  dpkg -L libc6 | grep 'libnss' | xargs -I{} cp -va {} $LIB_DIR
fi

for file in $LIB_DIR/*; do
  if [ ! -L $file ]; then
    echo $file
    patchelf --set-rpath $RPATH $file
    patchelf --print-interpreter $file >/dev/null 2>&1 && patchelf --set-interpreter $LD_FILE $file
  fi
done

if [[ $LIBC == "musl" ]]; then
  apk info -qL musl | xargs -I{} cp -va /{} $LIB_DIR
elif [[ $LIBC == "glibc" ]]; then
  cp -vL $(dpkg -L libc6 | grep "$(dpkg-architecture -qDEB_BUILD_MULTIARCH)/ld-linux") $LIB_DIR
  # cp -vL $(ldconfig -p | awk -v var="$(dpkg-architecture -qDEB_BUILD_MULTIARCH)/ld-" '$4 ~ var {print $4}') $LIB_DIR
fi

find . ! -path "./$LIB_DIR/*" -type f -exec sh -c 'file -b {} | grep -q ELF' \; -print | sort -f | xargs -I{} libtree -pvv {} | tee libtree.txt