env['BOOSTREGEXLIB'] = 'boost_regex' + env['BOOST_VARIANT']
env['BOOSTFSLIB'] = 'boost_filesystem' + env['BOOST_VARIANT']
env['BOOSTIOSTREAMSLIB'] = 'boost_iostreams' + env['BOOST_VARIANT']
+ env['BOOSTSIGNALSLIB'] = 'boost_signals' + env['BOOST_VARIANT']
if env['BOOST_PREFIX']:
env['BOOST_LIBDIR'] = os.path.join(env['BOOST_PREFIX'], 'lib')