When I do:
git checkout SC14_demo
cd runtime
mkdir build
cd build
cmake .. -DUSE_B40C=1 -DCMAKE_CXX_COMPILER=mpicxx

I get the following error:
Linking CXX executable bonsai_driver
/usr/bin/ld: CMakeFiles/bonsai_driver.dir/src/driver.cpp.o: undefined reference to symbol 'dlsym@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libdl.so.2: error adding symbols: DSO missing from command line

I can fix this by changing CMakeLists.txt to comment the following lines:

add_executable(bonsai_driver

src/driver.cpp

)