compile c++ boost test program on command line - c++

Question

I've registered an account at exercism.io and is working on the c++ test case. Trying to wrap my head around boost test I created this simple bob.cpp program:
#include "bob.h"
#include <iostream>
#include <string>
using namespace std;
int main(int argc, char const *argv[]) {
string s = bob::hey("Claus");
cout << s << endl;
return 0;
}
bob.h:
#include <string>
namespace bob {
std::string hey(std::string s) {
return "Hello " + s;
}
}
Compiling in terminal with 'clang++ bob.cpp' and running with ./a.out works. Wrote a boost test using this link: c++ Using boost test
bob_test.cpp:
#include "bob.h"
#define BOOST_TEST_MAIN
#include <boost/test/unit_test.hpp>
BOOST_AUTO_TEST_CASE(greeting) {
BOOST_CHECK_EQUAL("Hello Claus", bob::hey("Claus"));
}
But when I try to compile it using
~/devel/cpp/boost%>clang++ -I /opt/local/include -l boost_unit_test_framework bob_test.cpp
ld: library not found for -lboost_unit_test_framework
clang: error: linker command failed with exit code 1 (use -v to see invocation)
regards
Claus
This is on Yosemite with Xcode 6.0.1, boost 1.56 installed via macports. Tried on a Mavericks with same Xcode and boost 1.55 but same result.
I got it working by changing the parameters passed to the linker:
clang++ -I /opt/local/include -Wl,/opt/local/lib/libboost_unit_test_framework.a bob_test.cpp
^^^^
and provide the complete path to the library.
And to enable c++11 features add this:
-std=c++11

Answer 1

You forgot the library path:
$ clang++ -I /opt/local/include -L /opt/local/lib -l boost_unit_test_framework bob_test.cpp
^^^^^^^^^^^^^^^^^
The link error you get after fixing this indicates that you have no main() function - it seems that the boost unit test framework will generate this for you provided you have all the necessary boilerplate in place - see http://www.boost.org/doc/libs/1_40_0/libs/test/doc/html/utf/user-guide/test-organization/auto-test-suite.html for details, but it looks like you may need:
#define BOOST_AUTO_TEST_MAIN
#include <boost/test/auto_unit_test.hpp>
rather than:
#define BOOST_TEST_MAIN
#include <boost/test/unit_test.hpp>