Linux utility: Remove hard-coded absolute library paths and set a single DT_RUNPATH

make-relative-bin.sh

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

TGT="$1"
NEW_RUNPATH="${2:-\$ORIGIN/../lib}"

_patchelf() {
  (set -x; patchelf "$@")
}

_patchelf --remove-rpath "$TGT"
_patchelf --set-rpath "$NEW_RUNPATH" "$TGT"

readelf -d "$TGT" | awk '/Shared lib.*\//{sub(".*\\[","");sub("\\]","");print}' | while read -r LIB; do
  SHORT_LIB="${LIB##*/}"
  _patchelf --replace-needed "$LIB" "$SHORT_LIB" "$TGT"
done