https://sourceforge.net/p/cppunit/bugs/210/2013-05-24T02:44:53.755000ZRecent changes to 210: libcppunit.so: undefined reference to `dlsym' (with solution2013-05-24T02:44:53.755000Z2013-05-24T02:44:53.755000ZBoinsthttps://sourceforge.net/u/boinst/https://sourceforge.neta98c23cd9e93cc88ec60e9ad014810e67ae11c7b

<div class="markdown_content"><p>I had this problem too. I solved it by adding LDFLAGS="-lld" to the command line when calling "./configure"</p></div>

2012-12-03T18:58:55Z2012-12-03T18:58:55ZAlexander Perepelkinhttps://sourceforge.net/u/userid-2383191/https://sourceforge.netac4997db537e63831c0a79ab62fac81cae3acb1e

<div class="markdown_content"><p>Ubuntu 12.04 <br /> Linux version 3.2.0-29-generic-pae (buildd@roseapple) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012</p> <p>After libcppunit.so is successfully built it turns out that it could not be used due to lack of references. Simple 'make' command fails. Last command is:<br /> g++ -g -O2 -o .libs/DllPlugInTester DllPlugInTester.o CommandLineParser.o -ldl ../../src/cppunit/.libs/libcppunit.so -lm -Wl,--rpath -Wl,/home/tools/cppunit/lib<br /> ../../src/cppunit/.libs/libcppunit.so: undefined reference to `dlsym'<br /> ../../src/cppunit/.libs/libcppunit.so: undefined reference to `dlopen'<br /> ../../src/cppunit/.libs/libcppunit.so: undefined reference to `dlclose'</p> <p>The error is obviously caused by lack of -ldl option when linking libcppunit.so:</p> <p>g++ -shared -nostdlib /usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crti.o /usr/lib/gcc/i686-linux-gnu/4.6/crtbeginS.o .libs/AdditionalMessage.o .libs/Asserter.o .libs/BeOsDynamicLibraryManager.o .libs/BriefTestProgressListener.o .libs/CompilerOutputter.o .libs/DefaultProtector.o .libs/DynamicLibraryManager.o .libs/DynamicLibraryManagerException.o .libs/Exception.o .libs/Message.o .libs/RepeatedTest.o .libs/PlugInManager.o .libs/PlugInParameters.o .libs/Protector.o .libs/ProtectorChain.o .libs/SourceLine.o .libs/StringTools.o .libs/SynchronizedObject.o .libs/Test.o .libs/TestAssert.o .libs/TestCase.o .libs/TestCaseDecorator.o .libs/TestComposite.o .libs/TestDecorator.o .libs/TestFactoryRegistry.o .libs/TestFailure.o .libs/TestLeaf.o .libs/TestNamer.o .libs/TestPath.o .libs/TestPlugInDefaultImpl.o .libs/TestResult.o .libs/TestResultCollector.o .libs/TestRunner.o .libs/TestSetUp.o .libs/TestSuccessListener.o .libs/TestSuite.o .libs/TestSuiteBuilderContext.o .libs/TextOutputter.o .libs/TextTestProgressListener.o .libs/TextTestResult.o .libs/TextTestRunner.o .libs/TypeInfoHelper.o .libs/UnixDynamicLibraryManager.o .libs/ShlDynamicLibraryManager.o .libs/XmlDocument.o .libs/XmlElement.o .libs/XmlOutputter.o .libs/XmlOutputterHook.o .libs/Win32DynamicLibraryManager.o -L/usr/lib/gcc/i686-linux-gnu/4.6 -L/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu -L/usr/lib/gcc/i686-linux-gnu/4.6/../../../../lib -L/lib/i386-linux-gnu -L/lib/../lib -L/usr/lib/i386-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/i686-linux-gnu/4.6/../../.. -lstdc++ -lm -lc -lgcc_s /usr/lib/gcc/i686-linux-gnu/4.6/crtendS.o /usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crtn.o -Wl,-soname -Wl,libcppunit-1.12.so.1 -o .libs/libcppunit-1.12.so.1.0.0 </p> <p>When I added -ldl and executed it manually, the trouble is resolved.<br /> g++ -shared -nostdlib -ldl /usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crti.o /usr/lib/gcc/i686-linux-gnu/4.6/crtbeginS.o .libs/AdditionalMessage.o .libs/Asserter.o .libs/BeOsDynamicLibraryManager.o .libs/BriefTestProgressListener.o .libs/CompilerOutputter.o .libs/DefaultProtector.o .libs/DynamicLibraryManager.o .libs/DynamicLibraryManagerException.o .libs/Exception.o .libs/Message.o .libs/RepeatedTest.o .libs/PlugInManager.o .libs/PlugInParameters.o .libs/Protector.o .libs/ProtectorChain.o .libs/SourceLine.o .libs/StringTools.o .libs/SynchronizedObject.o .libs/Test.o .libs/TestAssert.o .libs/TestCase.o .libs/TestCaseDecorator.o .libs/TestComposite.o .libs/TestDecorator.o .libs/TestFactoryRegistry.o .libs/TestFailure.o .libs/TestLeaf.o .libs/TestNamer.o .libs/TestPath.o .libs/TestPlugInDefaultImpl.o .libs/TestResult.o .libs/TestResultCollector.o .libs/TestRunner.o .libs/TestSetUp.o .libs/TestSuccessListener.o .libs/TestSuite.o .libs/TestSuiteBuilderContext.o .libs/TextOutputter.o .libs/TextTestProgressListener.o .libs/TextTestResult.o .libs/TextTestRunner.o .libs/TypeInfoHelper.o .libs/UnixDynamicLibraryManager.o .libs/ShlDynamicLibraryManager.o .libs/XmlDocument.o .libs/XmlElement.o .libs/XmlOutputter.o .libs/XmlOutputterHook.o .libs/Win32DynamicLibraryManager.o -L/usr/lib/gcc/i686-linux-gnu/4.6 -L/usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu -L/usr/lib/gcc/i686-linux-gnu/4.6/../../../../lib -L/lib/i386-linux-gnu -L/lib/../lib -L/usr/lib/i386-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/i686-linux-gnu/4.6/../../.. -lstdc++ -lm -lc -lgcc_s /usr/lib/gcc/i686-linux-gnu/4.6/crtendS.o /usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crtn.o -Wl,-soname -Wl,libcppunit-1.12.so.1 -o .libs/libcppunit-1.12.so.1.0.0 </p> <p>It's probably the Makefile's deal.</p></div>