Fixes dyld libraries path to be able to install rust in /opt/local

fixrust.sh

#!/usr/bin/env bash
set -euo pipefail
#IFS=$'\n\t'

E_BADARGS=85

if [ ! -n "$1" ]
then
  echo "Usage: `basename $0` hash"
  exit $E_BADARGS
fi 

if [ ! ${#1} -eq 8 ]
then
  echo "hash must be 8 characters long"
  exit $E_BADARGS
fi

for i in `otool -L /opt/local/bin/rustc | grep x86_64 | awk '{print $1}'`
do
  install_name_tool -change $i /opt/local/lib/`basename $i` /opt/local/bin/rustc
done

for i in `otool -L /opt/local/bin/rustdoc | grep x86_64 | awk '{print $1}'`
do
  install_name_tool -change $i /opt/local/lib/`basename $i` /opt/local/bin/rustdoc
done

for rlib in `ls /opt/local/lib/*$1*`
do
  for i in `otool -L $rlib | grep x86_64 | awk '{print $1}'`
  do
    install_name_tool -change $i /opt/local/lib/`basename $i` $rlib
  done
done