Question

我想我在这里错过了一些非常愚蠢的事情。

我安装了libcppunit :(我正在使用Ubuntu 12.04）

$ apt-cache policy libcppunit-dev 
libcppunit-dev:
  Installed: 1.12.1-4
  Candidate: 1.12.1-4
  Version table:
 *** 1.12.1-4 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

$ apt-cache policy libcppunit-1.12-1 
libcppunit-1.12-1:
  Installed: 1.12.1-4
  Candidate: 1.12.1-4
  Version table:
 *** 1.12.1-4 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

我有一个简单的测试：

#include <iostream>

#include <cppunit/ui/text/TestRunner.h>
#include <cppunit/CompilerOutputter.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>

int main() {
    CppUnit::Test* suite = CppUnit::TestFactoryRegistry::getRegistry().makeTest();

    CppUnit::TextUi::TestRunner runner;
    runner.addTest(suite);
    runner.setOutputter(new CppUnit::CompilerOutputter(&runner.result(), std::cerr));

    return runner.run() ? 0 : 1;
}

我这是编译器输出：

$ g++ -lcppunit -o test.bin test.cpp 
/tmp/ccoQDuGC.o: In function `main':
test.cpp:(.text+0x36): undefined reference to `CppUnit::TestFactoryRegistry::getRegistry(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
test.cpp:(.text+0x75): undefined reference to `CppUnit::TextTestRunner::TextTestRunner(CppUnit::Outputter*)'
test.cpp:(.text+0x8b): undefined reference to `CppUnit::TestRunner::addTest(CppUnit::Test*)'
test.cpp:(.text+0x9a): undefined reference to `CppUnit::TextTestRunner::result() const'
test.cpp:(.text+0xe2): undefined reference to `CppUnit::CompilerOutputter::CompilerOutputter(CppUnit::TestResultCollector*, std::basic_ostream<char, std::char_traits<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
test.cpp:(.text+0xf4): undefined reference to `CppUnit::TextTestRunner::setOutputter(CppUnit::Outputter*)'
test.cpp:(.text+0x150): undefined reference to `CppUnit::TextTestRunner::run(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, bool, bool)'
test.cpp:(.text+0x189): undefined reference to `CppUnit::TextTestRunner::~TextTestRunner()'
test.cpp:(.text+0x227): undefined reference to `CppUnit::TextTestRunner::~TextTestRunner()'
collect2: ld returned 1 exit status

为了确保这些库确实存在于/ usr / lib

下

$ ls /usr/lib/ | grep cppunit
libcppunit-1.12.so.1
libcppunit-1.12.so.1.0.0
libcppunit.a
libcppunit.la
libcppunit.so

我错过了什么导致了这个？

Answer 1

您必须告诉编译器在之后链接到的库，告诉它要编译哪些文件，即

g++ test.cpp -lcppunit -o test.bin

Answer 2

我遇到了同样的问题（使用Ubuntu 11.04）

这在Ubuntu中似乎是bug。您的解决方法“-Wl， - no-as-needed”对我有用，并且在链接的错误报告中也被提及为变通方法。我没有足够深入探究实际原因。

Answer 3

我猜的根本原因是cppunit doc教程文件“money_example.html”，它建议添加到Makefile.am一行

MoneyApp_LDFLAGS = $(CPPUNIT_LIBS) -ldl

而不是正确的

MoneyApp_LDADD = $(CPPUNIT_LIBS) -ldl

甚至更正确

MoneyApp_LDADD = $(CPPUNIT_LIBS)

因为CPPUNIT_LIBS无论如何都会带来-ldl。 LDFLAGS在链接器可执行文件名后面添加标记，LDADD最后添加它们，消除了原始帖子中的错误。

Answer 4

使用cppunit和dl（-lcppunit -ldl）库添加链接

我如何链接到cppunit？

4 个答案: