/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLoggedOff::CMsgClientLoggedOff(Sc::CMsgClientLoggedOff const&)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgProtoBufHeader::~CMsgProtoBufHeader()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientHeartBeat::CMsgClientHeartBeat()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientRequestFriendData::~CMsgClientRequestFriendData()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientHeartBeat::~CMsgClientHeartBeat()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLoggedOff::~CMsgClientLoggedOff()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendMsgIncoming::CMsgClientFriendMsgIncoming()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendMsg::~CMsgClientFriendMsg()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientRequestFriendData::CMsgClientRequestFriendData()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLogon::~CMsgClientLogon()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgProtoBufHeader::ByteSize() const'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientPersonaState::~CMsgClientPersonaState()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendsList_Friend::~CMsgClientFriendsList_Friend()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientGamesPlayed::~CMsgClientGamesPlayed()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgProtoBufHeader::CMsgProtoBufHeader()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientChangeStatus::~CMsgClientChangeStatus()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLogonResponse::CMsgClientLogonResponse(Sc::CMsgClientLogonResponse const&)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgGCClient::~CMsgGCClient()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientGamesPlayed_GamePlayed::CMsgClientGamesPlayed_GamePlayed()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLogon::CMsgClientLogon()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendMsgIncoming::~CMsgClientFriendMsgIncoming()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientChangeStatus::CMsgClientChangeStatus()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendsList::CMsgClientFriendsList()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLogonResponse::~CMsgClientLogonResponse()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientPersonaState_Friend::CMsgClientPersonaState_Friend(Sc::CMsgClientPersonaState_Friend const&)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLogOff::CMsgClientLogOff()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientPersonaState::CMsgClientPersonaState()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLoggedOff::CMsgClientLoggedOff()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientGamesPlayed::CMsgClientGamesPlayed()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgGCClient::CMsgGCClient()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgMulti::CMsgMulti()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendsList_Friend::CMsgClientFriendsList_Friend(Sc::CMsgClientFriendsList_Friend const&)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendMsg::CMsgClientFriendMsg()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientPersonaState_Friend::~CMsgClientPersonaState_Friend()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgProtoBufHeader::CMsgProtoBufHeader(Sc::CMsgProtoBufHeader const&)'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLogonResponse::CMsgClientLogonResponse()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientLogOff::~CMsgClientLogOff()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgClientFriendsList::~CMsgClientFriendsList()'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libOpenSteamClient.so: undefined reference to `Sc::CMsgMulti::~CMsgMulti()'
collect2: error: ld returned 1 exit status