producer consumer link errors

gistfile1.txt

Linking CXX executable test_pc_std
/usr/bin/cmake -E cmake_link_script CMakeFiles/test_pc_std.dir/link.txt --verbose=1
/usr/bin/c++    -std=c++11 -pthread    CMakeFiles/test_pc_std.dir/main.cpp.o CMakeFiles/test_pc_std.dir/dummy.cpp.o  -o test_pc_std -rdynamic 
CMakeFiles/test_pc_std.dir/main.cpp.o: In function `main':
main.cpp:(.text+0xe7): undefined reference to `boost::thread::join()'
main.cpp:(.text+0xf6): undefined reference to `boost::thread::join()'
main.cpp:(.text+0x10a): undefined reference to `boost::thread::~thread()'
main.cpp:(.text+0x119): undefined reference to `boost::thread::~thread()'
main.cpp:(.text+0x157): undefined reference to `boost::thread::~thread()'
main.cpp:(.text+0x16b): undefined reference to `boost::thread::~thread()'