Hi everyone, I have been developing something, and basically it requires the two boost libraries - the matrix library and unit test library. I have a file test.cpp : #include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/io.hpp> #include <boost/test/included/unit_test.hpp> #define BOOST_TEST_DYN_LINK #define BOOST_TEST_MODULE test BOOST_AUTO_TEST_SUITE(Integer_matrices) BOOST_AUTO_TEST_CASE(Constructors) { BOOST_CHECK(2 == 2); } BOOST_AUTO_TEST_SUITE_END() I am compiling this with: g++ -I <path to boost_1_63_0> test.cpp I'm getting the following error: /tmp/ccnxRzsf.o: In function `main': test.cpp:(.text+0x18aa1): undefined reference to `init_unit_test_suite(int, char**)' collect2: error: ld returned 1 exit status Any help will be greatly appreciated. Thanks.