Hi Team, Greetings for the day. I apologies if this is a duplicate case which is already reported, but I am unable to find a suitable answer for this. I have installed boost(1.67.0.1) via brew, and created a simple unit test case as below. #define BOOST_TEST_DYN_LINK #define BOOST_TEST_MODULE super #include <boost/test/unit_test.hpp> using namespace boost::unit_test; std::string uri; std::string versionNum; BOOST_AUTO_TEST_CASE( free_test_function ) { BOOST_CHECK(true /* test assertion */); } *Compiled this code as below.* g++ obj/main.o -L /Library/PostgreSQL/9.6/lib -L /usr/local/lib -L /usr/local/opt/openssl/lib/ -o test_integration -lpq -lcpprest -lboost_regex-mt -lboost_system-mt -lboost_thread-mt -lssl -lcrypto -lboost_chrono-mt -lboost_log-mt -lboost_locale-mt -lboost_date_time-mt -lboost_program_options-mt -lboost_stacktrace_noop-mt -lboost_filesystem-mt -lboost_unit_test_framework-mt test integration installation is completed. *Got the error, while I execute the binary.* ./test_integration libc++abi.dylib: terminating with uncaught exception of type boost::unit_test::framework::setup_error: test unit with name 'free_test_function' registered multiple times [1] 59619 abort ./test_integration *I have tried to debug the binary, which execution is successful.* lldb -- ./pgBucket_integration (lldb) target create "./pgBucket_integration" Current executable set to './pgBucket_integration' (x86_64). (lldb) r Process 60066 launched: './pgBucket_integration' (x86_64) Running 1 test case... *** No errors detected Process 60066 exited with status = 0 (0x00000000) I would like to request you to guide me on what/where I am missing. *Below are my g++ version details.* $ g++ --version Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1 Apple LLVM version 8.1.0 (clang-802.0.42) Target: x86_64-apple-darwin16.4.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin -- Regards, Dinesh manojadinesh.blogspot.com