CppUnit 在 Mac OS X 上使用 Clang 链接错误

Question

我正在尝试使用 CppUnit 编译一个测试程序。问题是，使用此示例代码：

//[...]

class EntityComponentTest : public CppUnit::TestFixture
{
CPPUNIT_TEST_SUITE( EntityComponentTest );
CPPUNIT_TEST( testGetComponents );
CPPUNIT_TEST_SUITE_END();
Entity e;


public:
void setUp(){
    e.addComponent("1", new TestComponent("Hello 1"));
    e.addComponent("2", new TestComponent("Hello 2"));
}

void tearDown(){}

void testGetComponents()
{
    TestComponent &first = static_cast<TestComponent&>(e.getComponent("1"));
    TestComponent &second = static_cast<TestComponent&>(e.getComponent("2"));

    CPPUNIT_ASSERT(first.msg == "Hello 1");
    CPPUNIT_ASSERT(second.msg == "Hello 2");

}


};
CPPUNIT_TEST_SUITE_REGISTRATION( EntityComponentTest );
int main(void)
{
//followed from tutorial
CppUnit::TextUi::TestRunner run;
CppUnit::TestFactoryRegistry &r = CppUnit::TestFactoryRegistry::getRegistry();
run.addTest(r.makeTest());

run.run("", false, true);

return 0;
}

我收到链接错误：

  Undefined symbols for architecture x86_64:
  "CppUnit::SourceLine::SourceLine(std::__1::basic_string<char,    std::__1::char_traits<char>, std::__1::allocator<char> > const&, int)", referenced from:
  EntityComponentTest::testGetComponents() in EntityComponentTest.cpp.o
  "CppUnit::TextTestRunner::run(std::__1::basic_string<char, std::__1::char_traits<char>,   std::__1::allocator<char> >, bool, bool, bool)", referenced from:
  _main in EntityComponentTest.cpp.o
  "CppUnit::TestFactoryRegistry::getRegistry(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
  _main in EntityComponentTest.cpp.o
  CppUnit::AutoRegisterSuite<EntityComponentTest>::AutoRegisterSuite() in   EntityComponentTest.cpp.o
  "CppUnit::Message::Message(std::__1::basic_string<char, std::__1::char_traits<char>,  std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>,  std::__1::allocator<char> > const&)", referenced from:
  EntityComponentTest::testGetComponents() in EntityComponentTest.cpp.o
 "CppUnit::TestCase::TestCase(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
  CppUnit::TestCaller<EntityComponentTest>::TestCaller(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, void (EntityComponentTest::*)(), EntityComponentTest*) in EntityComponentTest.cpp.o
 "CppUnit::TestSuite::TestSuite(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >)", referenced from:
  EntityComponentTest::suite() in EntityComponentTest.cpp.o
 "CppUnit::TestSuiteBuilderContextBase::getTestNameFor(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) const", referenced from:
  EntityComponentTest::addTestsToSuite(CppUnit::TestSuiteBuilderContextBase&) in EntityComponentTest.cpp.o
 "CppUnit::Test::findTestPath(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, CppUnit::TestPath&) const", referenced from:
  vtable for CppUnit::TestCaller<EntityComponentTest> in EntityComponentTest.cpp.o
 "CppUnit::Test::resolveTestPath(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) const", referenced from:
  vtable for CppUnit::TestCaller<EntityComponentTest> in EntityComponentTest.cpp.o
 "CppUnit::Test::findTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) const", referenced from:
  vtable for CppUnit::TestCaller<EntityComponentTest> in EntityComponentTest.cpp.o
 ld: symbol(s) not found for architecture x86_64
 clang: error: linker command failed with exit code 1 (use -v to see invocation)

我在调用 clang 时使用了 -lcppunit 标志。当我在我的 Linux 机器上运行 make 文件时，它编译得很好。

libcppunit-1.12.1.0.0.dylib
libcppunit-1.12.1.dylib
libcppunit.a
libcppunit.dylib

在我的 /usr/local/lib/ 中。我什至尝试安装到 /usr/lib 并发生相同的链接错误。任何帮助将不胜感激。

非常感谢！

编辑：我发现了问题所在。我正在使用 libc++，因为我在我的项目中使用了 std::shared_ptr。问题是我尝试使用 libc++ 编译 CppUnit，但它会引发链接错误。看来它必须用 libstdc++ 编译，这需要我安装 Fink 或 Macports，这样我才能安装最新版本的 gcc 和 libstdc++。我真的希望避免这种情况，因为尝试设置它会一团糟。我真的也希望避免对 shared_ptr 使用 Boost。

这有可能吗？如果没有，我可能会放弃并安装 MacPorts

Answer 1

我有同样的问题。将“C++标准库”设置为“libstdc++(GNU C++标准库)”后就OK了。