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boost/config/abi_prefix.hpp

http://www.boost.org/LICENSE_1_0.txt).

#ifndef BOOST_CONFIG_ABI_PREFIX_HPP
# define BOOST_CONFIG_ABI_PREFIX_HPP
#else
# error double inclusion of header boost/config/abi_prefix.hpp is an error
#endif

#include <boost/config.hpp>

// this must occur after all other includes and before any code appears:
#ifdef BOOST_HAS_ABI_HEADERS
#  include BOOST_ABI_PREFIX
#endif