llvm-g++ -stdlib=libstdc++ -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter -g -DMAC_OSX -DMSG_NOSIGNAL=0 -DBOOST_SPIRIT_THREADSAFE -DUSE_UPNP=1 -DUSE_IPV6=1 -I/Users/wilson/litecoin/src/leveldb/include -I/Users/wilson/litecoin/src/leveldb/helpers -DHAVE_BUILD_INFO -I"/Users/wilson/litecoin/src" -I"/Users/wilson/litecoin/src"/obj -I"/opt/local/include" -I"/opt/local/include/db48" -o litecoind -L"/opt/local/lib" -L"/opt/local/lib/db48" leveldb/libleveldb.a obj/alert.o obj/version.o obj/checkpoints.o obj/netbase.o obj/addrman.o obj/crypter.o obj/key.o obj/db.o obj/init.o obj/keystore.o obj/main.o obj/net.o obj/protocol.o obj/bitcoinrpc.o obj/rpcdump.o obj/rpcnet.o obj/rpcmining.o obj/rpcwallet.o obj/rpcblockchain.o obj/rpcrawtransaction.o obj/script.o obj/scrypt.o obj/sync.o obj/util.o obj/wallet.o obj/walletdb.o obj/hash.o obj/bloom.o obj/noui.o obj/leveldb.o obj/txdb.o -dead_strip -ldb_cxx-4.8 -lboost_system-mt -lboost_filesystem-mt -lboost_program_options-mt -lboost_thread-mt -lboost_chrono-mt -lssl -lcrypto -lz -lminiupnpc /Users/wilson/litecoin/src/leveldb/libleveldb.a /Users/wilson/litecoin/src/leveldb/libmemenv.a
Undefined symbols for architecture x86_64:
  "boost::program_options::to_internal(std::string const&)", referenced from:
      boost::program_options::detail::basic_config_file_iterator<char>::getline(std::string&) in util.o
  "boost::program_options::detail::common_config_file_iterator::common_config_file_iterator(std::set<std::string, std::less<std::string>, std::allocator<std::string> > const&, bool)", referenced from:
      boost::program_options::detail::basic_config_file_iterator<char>::basic_config_file_iterator(std::istream&, std::set<std::string, std::less<std::string>, std::allocator<std::string> > const&, bool) in util.o
  "Db::verify(char const*, char const*, std::ostream*, unsigned int)", referenced from:
      CDBEnv::Verify(std::string, bool (*)(CDBEnv&, std::string)) in db.o
      CDBEnv::Salvage(std::string, bool, std::vector<std::pair<std::vector<unsigned char, std::allocator<unsigned char> >, std::vector<unsigned char, std::allocator<unsigned char> > >, std::allocator<std::pair<std::vector<unsigned char, std::allocator<unsigned char> >, std::vector<unsigned char, std::allocator<unsigned char> > > > >&) in db.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [litecoind] Error 1
Wilsons-Mac:src wilson$