Re: [Boost-users] Boost Unit Test Undefined Reference

From: Gennadiy Rozental (rogeeff_at_[hidden])
Date: 2007-08-26 15:27:17

<cmicel1_at_[hidden]> wrote in message 
news:20070825232701.1e1f7qn08wg0g4w0_at_webmail.cct.lsu.edu...
> Am I missing something when I get undefined references to main using
> boost 1.34.1.  Here is a minimal example
>
> #include <iostream>
> #include <boost/test/unit_test.hpp>
>
> void my_test_function()
> {
>     std::cout << "hi there" << std::endl;
> }
> boost::unit_test::test_suite* init_unit_test_suite( int , char*[] )
> {
>      boost::unit_test::test_suite* test = BOOST_TEST_SUITE( "Master
> test suite" );
>      test->add( BOOST_TEST_CASE( &my_test_function ) );
>      return test;
> }
>
> This is copied off of the main page.  Here is the compilation line
> g++ test.cpp -o test -lboost_unit_test_framework-gcc41
> With gcc version 4.1.2
> Here is the error message:
> /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../lib/crt1.o: In function
> `_start':
> (.text+0x18): undefined reference to `main'
> collect2: ld returned 1 exit status
>
> Any insight?
> Chris Miceli

This was discusedin length right after 1.34. was out. The problem 
essencially is that -lboost_unit_test_framework-gcc41 in your build command 
picks up  incorrect version of the library. You should've used static 
version, while it picks up shared one (they both similarly, only extension 
is different). You've got several ways to deal with it:

1. rename shared library version of Boost.Test
2. enforce static library selection with -Bstatic and/or -Dn compiler's 
flags
3. Use aut registration instead combined with 
BOOST_TEST_MAIN/BOOST_TEST_MODULE

#include <iostream>
#define BOOST_TEST_MODULE  my test
#include <boost/test/unit_test.hpp>

BOOST_AUTO_TEST_CASE( my_test_function )
{
    std::cout << "hi there" << std::endl;
}

Gennadiy