编译bug

[cuijinquan]

bug:
/net/libtnet/src/acceptor.cpp: In destructor ‘tnet::Acceptor::~Acceptor()’:
/net/libtnet/src/acceptor.cpp:38:27: error: ‘close’ was not declared in this scope
close(m_sockFd);
^
/net/libtnet/src/acceptor.cpp:40:24: error: ‘close’ was not declared in this scope
close(m_dummyFd);
^
/net/libtnet/src/acceptor.cpp: In member function ‘void tnet::Acceptor::onAccept(tnet::IOLoop*, int)’:
/net/libtnet/src/acceptor.cpp:98:32: error: ‘close’ was not declared in this scope
close(m_dummyFd);
^
make[2]: *** [src/CMakeFiles/tnet.dir/acceptor.cpp.o] Error 1
make[1]: *** [src/CMakeFiles/tnet.dir/all] Error 2
make: *** [all] Error 2

[HamsterCoderSim]

请问解决这个问题了吗，这个问题是由什么引起的呢？ @cuijinquan