#!/bin/bash

set -e

if test -z "$TEA_PREFIX"
then
  echo 'TEA_PREFIX mysteriously unset' >&2
  exit 1
fi

DIR=$(dirname "$0")
IFS=: read -r -a PATHS <<< "$PATH"

__which() {
  for dir in "${PATHS[@]}"; do
    if test "$dir" == "$DIR"; then
      :  # no fork bombs thanks
    elif [ -L "$dir/$1" ]; then
      # no fork bombs thanks
      foo="$(realpath "$dir/$1")"
      foo="$(basename "$foo")"
      if [ "$foo" != "tea" ]; then
        exe="$dir/$1"
        return 0
      fi
    elif [ -x "$dir/$1" ]; then
      exe="$dir/$1"
      return 0
    fi
  done

  return 1
}

# If we can find our specific name, e.g. `lld`,
# passthrough to that
# Otherwise, fallback to `ld`
# NB: this might not have the right invocations, sometimes;
# (invoking `ld` as `lld64.ld`) watch for those potential cases
if __which $(basename "$0") || __which ld; then
  :
else
  echo 'ld not found in PATH' >&2
  exit 127
fi

# At a minimum, `ld` will complain if you mix the `-r` and `-rpath` flags,
# so if any argument to this script is `-r`, we just pass through without
# additions.
for word in "$@"; do
  if test "$word" = "-r"; then
    exec "$exe" "$@"
  fi
done

exec "$exe" "$@" -rpath "$TEA_PREFIX"