cmake HAS_NO_UNDEFINED examples

loentar/ngrest CMakeLists.txt :16 

check_cxx_compiler_flag(-Wl,--no-undefined HAS_NO_UNDEFINED)

loentar/ngrest tools/ngrestcg/templates/project/CMakeLists.txt :12 

check_cxx_compiler_flag(-Wl,--no-undefined HAS_NO_UNDEFINED)