#! /bin/bash

die() {
  echo -e "$*"
  exit 1
}

root_cache_dir=/var/tmp/ccache
ccache_dir=/usr/lib/ccache/bin
quiet="no"

if [ "$1" = "--help" ]; then
  echo "Usage: ${0##*/} [-q]" 
  echo "This is a simple wrapper which:"
  echo "-adds ccache path"
  echo "-if run as root it uses $root_cache_dir, if exist"
  echo "-runs rest of the options as command"
  exit 0
fi

if [ "$1" = "-q" ]; then
  quiet="yes"
  shift
fi

[ -z "$1" ] && die "Missing argument"

[ -d "$ccache_dir" ] || die "ccache dir $ccache_dir not found"
export PATH="/usr/lib/ccache/bin:$PATH"

[ "$quiet" = "yes" ] || echo "Running ${0##*/} as $(whoami) - gcc is $(type gcc)"
if [ "$(whoami)" = "root" ]; then
  [ -d "$root_cache_dir" ] && export CCACHE_DIR="$root_cache_dir"
fi
unset root_cache_dir ccache_dir quiet
unset -f die
$@