I'm getting an error whenever I try to use npm to install this. Any suggestions please?

Node v0.10.10
Ubuntu 12.10 (but I have exactly the same error on CentOS 6.2)

chris@chris-desktop:~/Node/Parser$ npm install pcap
npm http GET https://registry.npmjs.org/pcap
npm http 304 https://registry.npmjs.org/pcap
npm http GET https://registry.npmjs.org/socketwatcher
npm http 304 https://registry.npmjs.org/socketwatcher

socketwatcher@0.2.0 install /home/chris/node_modules/pcap/node_modules/socketwatcher
node-gyp rebuild
make: Entering directory /home/chris/node_modules/pcap/node_modules/socketwatcher/build' CXX(target) Release/obj.target/socketwatcher/socket_watcher.o SOLINK_MODULE(target) Release/obj.target/socketwatcher.node SOLINK_MODULE(target) Release/obj.target/socketwatcher.node: Finished COPY Release/socketwatcher.node make: Leaving directory/home/chris/node_modules/pcap/node_modules/socketwatcher/build'
pcap@1.0.0 install /home/chris/node_modules/pcap
node-gyp rebuild
make: Entering directory /home/chris/node_modules/pcap/build' CXX(target) Release/obj.target/pcap_binding/pcap_binding.o CXX(target) Release/obj.target/pcap_binding/pcap_session.o ../pcap_session.cc: In static member function ‘static void PcapSession::PacketReady(u_char*, const pcap_pkthdr*, const u_char*)’: ../pcap_session.cc:72:50: error: ‘memcpy’ was not declared in this scope ../pcap_session.cc: In static member function ‘static v8::Handle<v8::Value> PcapSession::Open(bool, const v8::Arguments&)’: ../pcap_session.cc:202:50: error: ‘strlen’ was not declared in this scope make: *** [Release/obj.target/pcap_binding/pcap_session.o] Error 1 make: Leaving directory/home/chris/node_modules/pcap/build'
gyp ERR! build error
gyp ERR! stack Error: make failed with exit code: 2
gyp ERR! stack at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:267:23)
gyp ERR! stack at ChildProcess.EventEmitter.emit (events.js:98:17)
gyp ERR! stack at Process.ChildProcess._handle.onexit (child_process.js:789:12)
gyp ERR! System Linux 3.5.0-39-generic
gyp ERR! command "node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /home/chris/node_modules/pcap
gyp ERR! node -v v0.10.10
gyp ERR! node-gyp -v v0.9.6
gyp ERR! not ok
npm ERR! weird error 1
npm ERR! not ok code 0