Build errors in Ubuntu 18.04 for libmediasoupclient and mediasoup-boradcaster-demo

I still get an error:

[ 81%] **Linking CXX executable broadcaster**
/usr/bin/ld: /home/sumitj/webrtc-checkout-m84/src/out/m84/obj/libwebrtc.a(latebindingsymboltable_linux.o): undefined reference to symbol 'dlclose@@GLIBC_2.2.5'
/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/libdl.so: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
CMakeFiles/broadcaster.dir/build.make:122: recipe for target 'broadcaster' failed
make[2]: *** [broadcaster] Error 1

When I print out the cmake variables I see this which means libwebrtc is not linked:

{LIBWEBRTC_BINARY_PATH}/libwebrtc{CMAKE_STATIC_LIBRARY_SUFFIX}: /home/sumitj/webrtc-checkout-m84/src/out/m84/obj/libwebrtc.a

${CMAKE_DL_LIBS}: dl