Hello everyone, One of the errors that keeps popping up time and time again as I attempt to compile boost on AIX is the following: common.mkdir ../bin.v2/libs/asio/test/basic_datagram_socket_select.test common.mkdir ../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1 common.mkdir ../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1/debug common.mkdir ../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1/debug/threading-multi gcc.compile.c+ + ../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1/debug/threading-multi/basic_datagram_socket.o gcc.link ../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1/debug/threading-multi/basic_datagram_socket_select ld: 0711-224 WARNING: Duplicate symbol: .init_unit_test_suite(int, char**) ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information. ld: 0711-317 ERROR: Undefined symbol: .test_main(int, char**) collect2: error: ld returned 8 exit status "g++" -o "../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1/debug/threading-multi/basic_datagram_socket_select" "../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1/debug/threading-multi/basic_datagram_socket.o" "../bin.v2/libs/test/build/gcc-4.8.1/debug/link-static/threading-multi/libboost_test_exec_monitor.a" "../bin.v2/libs/system/build/gcc-4.8.1/debug/threading-multi/libboost_system.so" "../bin.v2/libs/regex/build/gcc-4.8.1/debug/threading-multi/libboost_regex.so" "../bin.v2/libs/date_time/build/gcc-4.8.1/debug/threading-multi/libboost_date_time.so" -lrt -g -Wl,-brtl -Wl,-bnoipath -pthread ...failed gcc.link ../bin.v2/libs/asio/test/basic_datagram_socket_select.test/gcc-4.8.1/debug/threading-multi/basic_datagram_socket_select... So this particular error happens in every single asio test, but this kind of error also happens across a few other libraries. I tried to set the gcc flag that simply states that these type of linking errors should be ignored, but many tests apparently still reference the symbol on AIX. Additionally while debugging, I realized that the power linux platform also keeps the symbols test_main undefined, but apparently manages to throw them out in the executable. My main question is where in the building framework are those symbols being thrown out? Or is the issue something bigger? Thank you for reading. Sincerely, -Axel