test# hphp hip-hop-test.php --keep-tempdir=1 --log=3
running hphp...
creating temporary directory /tmp/hphp_vvyh9K ...
running hphp took 0'00" (78 ms) wall time
Exception: Environment variable HPHP_HOME is not set.\n
hphp failed
running hphp took 0'00" (103 ms) wall time