Script to patch the Boost libraries changing the occurences of `@rpath` back to a full path

boost_fixup_rpath.sh

#/bin/env bash

# This script allows to patch the Boost libraries changing the occurences of `@rpath`
# back to a full path specific to this dashboard.
#
# This is currently required by Slicer macOS packaging infrastructure.

set -euo pipefail

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

BOOST_INSTALL_DIR=${SCRIPT_DIR}/boost_1_78_0-install

cd ${BOOST_INSTALL_DIR}/lib

# Collect list of boost library filenames
boost_library_filenames=()
for filename in $(ls *.dylib); do
  boost_library_filenames+=( ${filename} )
done

# Fix library id
for filename in ${boost_library_filenames[@]}; do
  echo "Fixing ${filename}"

  filepath=${BOOST_INSTALL_DIR}/lib/${filename}
  if [[ ! -e ${filepath} ]]; then
    echo "Filepath [${filepath}] does not exist"
    exit 1
  fi

  install_name_tool -id ${filepath} ${filepath}

  # Given lines of the form
  #   @rpath/libboost_<name>.dylib (compatibility version 0.0.0, ...)
  # Extract
  #   @rpath/libboost_<name>.dylib
  rpaths=$(otool -L ${filepath} | grep "@rpath/libboost" | cut -d"(" -f1 | xargs) || true
  for rpath in $rpaths; do
    # Replace "@rpath" with "${BOOST_INSTALL_DIR}/lib"
    updated_rpath=${rpath/@rpath/${BOOST_INSTALL_DIR}/lib}
    install_name_tool -change ${rpath} ${updated_rpath} ${filepath}
    echo "  $rpath -> $updated_rpath"
  done

done