ns3 build failing

[Rima ZOURANE]

I installed the latest version of ns3 in my vm and the build worked for the first times and now i don't know why but it doesn't seem to work and it gives me this error, could anyone help ?

/usr/bin/ld: ../src/test/CMakeFiles/libtest.dir/ns3tcp/ns3tcp-socket-test-suite.cc.o: in function `Ns3TcpSocketTestCaseCsma::DoRun()':
/home/rima/ns-allinone-3.38/ns-3.38/src/test/ns3tcp/ns3tcp-socket-test-suite.cc:230: undefined reference to `ns3::CsmaHelper::CsmaHelper()'
/usr/bin/ld: /home/rima/ns-allinone-3.38/ns-3.38/src/test/ns3tcp/ns3tcp-socket-test-suite.cc:231: undefined reference to `ns3::CsmaHelper::SetChannelAttribute(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, ns3::AttributeValue const&)'
/usr/bin/ld: /home/rima/ns-allinone-3.38/ns-3.38/src/test/ns3tcp/ns3tcp-socket-test-suite.cc:232: undefined reference to `ns3::CsmaHelper::SetChannelAttribute(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, ns3::AttributeValue const&)'
/usr/bin/ld: /home/rima/ns-allinone-3.38/ns-3.38/src/test/ns3tcp/ns3tcp-socket-test-suite.cc:235: undefined reference to `ns3::CsmaHelper::Install(ns3::NodeContainer const&) const'
/usr/bin/ld: ../src/test/CMakeFiles/libtest.dir/ns3tcp/ns3tcp-socket-test-suite.cc.o: in function `ns3::CsmaHelper::~CsmaHelper()':
/home/rima/ns-allinone-3.38/ns-3.38/src/csma/helper/csma-helper.h:56: undefined reference to `vtable for ns3::CsmaHelper'
/usr/bin/ld: /home/rima/ns-allinone-3.38/ns-3.38/src/csma/helper/csma-helper.h:56: undefined reference to `vtable for ns3::CsmaHelper'
/usr/bin/ld: ../src/test/CMakeFiles/libtest.dir/ns3tcp/ns3tcp-socket-test-suite.cc.o: in function `ns3::CsmaHelper::~CsmaHelper()':
/home/rima/ns-allinone-3.38/ns-3.38/src/csma/helper/csma-helper.h:56: undefined reference to `vtable for ns3::CsmaHelper'
/usr/bin/ld: ../src/test/CMakeFiles/libtest.dir/ns3tcp/ns3tcp-socket-test-suite.cc.o: in function `non-virtual thunk to ns3::CsmaHelper::~CsmaHelper()':
/usr/include/c++/11/bits/stl_list.h:499: undefined reference to `vtable for ns3::CsmaHelper'
/usr/bin/ld: ../src/test/CMakeFiles/libtest.dir/ns3tcp/ns3tcp-socket-test-suite.cc.o: in function `ns3::CsmaHelper::~CsmaHelper()':
/home/rima/ns-allinone-3.38/ns-3.38/src/csma/helper/csma-helper.h:56: undefined reference to `vtable for ns3::CsmaHelper'
/usr/bin/ld: ../src/test/CMakeFiles/libtest.dir/ns3tcp/ns3tcp-socket-test-suite.cc.o:/home/rima/ns-allinone-3.38/ns-3.38/src/csma/helper/csma-helper.h:57: more undefined references to `vtable for ns3::CsmaHelper' follow
collect2: error: ld returned 1 exit status
gmake[2]: *** [utils/CMakeFiles/test-runner.dir/build.make:119: ../build/utils/ns3.38-test-runner-default] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:3908: utils/CMakeFiles/test-runner.dir/all] Error 2
gmake: *** [Makefile:146: all] Error 2
Finished executing the following commands:
cd cmake-cache; /usr/bin/cmake --build . -j 3 ; cd ..

[Tom Henderson]

My quick read of this is that you must be enabling only a subset of
modules and not including 'csma' in that subset, and there is a bug in
the CMakeLists.txt for ns3tcp-socket-test-suite.cc that is only checking
if 'applications' and 'point-to-point' are included, but should also be
checking 'csma'.

The workaround for now is to include 'csma' in the list of enabled
modules, even if you do not need it (it is a small library).

- Tom

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