been trying to compile the library under mac os x 10.8.4 mountain lion with clang++ version 5.0. It is getting multiple compile errors having this similar message

ld: unknown option: -headerpad_max_install_names;-std=c++11
clang: error: linker command failed with exit code 1 (use -v to see invocation)

it seems there is an extra ";" symbol in between two linker flags. The command executing it is

cd /Users/XX/Desktop/cpp-netlib/build/message/test && /opt/local/bin/cmake -E cmake_link_script CMakeFiles/cpp-netlib-message_transform_test.dir/link.txt --verbose=1

the error will go away if I manually edit the link.txt file and get rid of the ";". Any idea where this is originated from the cmake source ?