 define=BOOST_TEST_NO_MAIN``  When the library is compiled with __boost_test_no_main__ defined, one source file must provide a definition for =main=.  The simplest is to delegate to __unit_test_main__ and provide an implementation of an initialization function that manually adds test cases and suites to the test tree. Any test cases or test suites added with __boost_auto_test_case__, __boost_fixture_test_case__, __boost_auto_test_suite__ or __boost_fixture_test_suite__ are automatically added.  ``` // In exactly one source file #define BOOST_TEST_NO_MAIN #include <boost/test/unit_test.hpp>  boo