cppunit、cmake、ubuntu链接错误

很抱歉，这可能是一个完全没有意义的问题，但我越来越绝望了。我正在尝试在Ubuntu 上使用KDevelop/CMake运行cppunit

我安装了libcppunit dev:

markus@hp-notebook:~$ 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://at.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
        100 /var/lib/dpkg/status

我的CMakeLists.txt看起来像这样：

project(simpletest)
include_directories(/usr/local/include/)
link_directories(/usr/lib/)
add_executable(simpletest main.cpp)
LINK_LIBRARIES(simpletest cppunit)

我的简单测试是这样的：

#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;
}

如果我只是做一个：

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

一切编译和链接都很好。但如果我使用CMake构建，我会得到链接器错误：

/home/markus/projects/simpletest/build> make
-- Configuring done
-- Generating done
-- Build files have been written to: /home/markus/projects/simpletest/build
Scanning dependencies of target simpletest
[100%] Building CXX object CMakeFiles/simpletest.dir/main.cpp.o
Linking CXX executable simpletest
CMakeFiles/simpletest.dir/main.cpp.o: In function `main':
/home/markus/projects/simpletest/main.cpp:9: undefined reference to `CppUnit::TestFactoryRegistry::getRegistry(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/home/markus/projects/simpletest/main.cpp:11: undefined reference to `CppUnit::TextTestRunner::TextTestRunner(CppUnit::Outputter*)'
/home/markus/projects/simpletest/main.cpp:12: undefined reference to `CppUnit::TestRunner::addTest(CppUnit::Test*)'
/home/markus/projects/simpletest/main.cpp:13: undefined reference to `CppUnit::TextTestRunner::result() const'
/home/markus/projects/simpletest/main.cpp:13: 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&)'
/home/markus/projects/simpletest/main.cpp:13: undefined reference to `CppUnit::TextTestRunner::setOutputter(CppUnit::Outputter*)'
/home/markus/projects/simpletest/main.cpp:15: undefined reference to `CppUnit::TextTestRunner::run(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, bool, bool)'
/home/markus/projects/simpletest/main.cpp:15: undefined reference to `CppUnit::TextTestRunner::~TextTestRunner()'
/home/markus/projects/simpletest/main.cpp:15: undefined reference to `CppUnit::TextTestRunner::~TextTestRunner()'
collect2: ld returned 1 exit status
make[2]: *** [simpletest] Error 1
make[1]: *** [CMakeFiles/simpletest.dir/all] Error 2
make: *** [all] Error 2
*** Failed ***

由于它在直接调用g++时可以工作，我假设所有的库都在那里并且可以工作（没有编译器等），但问题出在我的CMake文件上。-库声明应该如何工作——例如，库是称为libcppunit还是仅称为cppunit。我想我只是犯了一个愚蠢的错误，但任何帮助都将不胜感激。