#!/bin/sh
set -e

# ccache breaks if it sees CCACHE_DIR="", yet due to clumsiness of
# /usr/bin/env, it's hard to avoid setting env vars for the parent;
# unset them if they're empty

if [ -z "$CCACHE_DIR" ]; then
   unset CCACHE_DIR
fi

if [ -z "$CC" ]; then
   unset CC
fi

if [ -z "$CXX" ]; then
   unset CXX
fi

exec "$@"