title: Linking static libs built with VS2008 from a VS2012 project? Are they compatible?
body: <p>I have a bunch of static .lib files including mysqlclient.lib, v8_base.lib and mysqlpp.lib that I link into my project, these were all built using Visual Studio 2008, they are built using the /MT runtime library option.</p>
  
  <p>I've just tried upgrading to VS2012 and the code compiles fine but when the project get linked I get the following errors (over 500 errors in total):</p>
  
  <pre><code>Error   47  error LNK2019: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ) referenced in function "public: void __thiscall std::ios_base::clear(int,bool)" (?clear@ios_base@std@@QAEXH_N@Z)  D:\server\mysqlpp.lib(dbdriver.obj) server
  Error   48  error LNK2001: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ)   D:\server\mysqlpp.lib(datetime.obj) server
  Error   49  error LNK2001: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ)   D:\server\mysqlpp.lib(stadapter.obj)    server
  Error   50  error LNK2001: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ)   D:\server\mysqlpp.lib(sqlstream.obj)    server
  Error   51  error LNK2001: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ)   D:\server\mysqlpp.lib(connection.obj)   server
  Error   52  error LNK2001: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ)   D:\server\mysqlpp.lib(mystring.obj) server
  Error   53  error LNK2001: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ)   D:\server\mysqlpp.lib(row.obj)  server
  Error   54  error LNK2001: unresolved external symbol "public: __thiscall std::_Mutex::~_Mutex(void)" (??1_Mutex@std@@QAE@XZ)   D:\server\mysqlpp.lib(query.obj)    server
  Error   55  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(dbdriver.obj) server
  Error   56  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(datetime.obj) server
  Error   57  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(stadapter.obj)    server
  Error   58  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(sqlstream.obj)    server
  Error   59  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(connection.obj)   server
  Error   60  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(mystring.obj) server
  Error   61  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(row.obj)  server
  Error   62  error LNK2001: unresolved external symbol "long const std::_BADOFF" (?_BADOFF@std@@3JB) D:\server\mysqlpp.lib(query.obj)    server
  Error   63  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(qparms.obj)   server
  Error   64  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(sqlstream.obj)    server
  Error   65  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(options.obj)  server
  Error   66  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(field_types.obj)  server
  Error   67  error LNK2019: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) referenced in function "public: char __thiscall mysqlpp::SQLTypeAdapter::at(unsigned int)const " (?at@SQLTypeAdapter@mysqlpp@@QBEDI@Z)  D:\server\mysqlpp.lib(stadapter.obj)    server
  Error   68  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(manip.obj)    server
  Error   69  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(null.obj) server
  Error   70  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(datetime.obj) server
  Error   71  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(type_info.obj)    server
  Error   72  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(vallist.obj)  server
  Error   73  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(field_names.obj)  server
  Error   74  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(query.obj)    server
  Error   75  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(dbdriver.obj) server
  Error   76  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(tcp_connection.obj)   server
  Error   77  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(uds_connection.obj)   server
  Error   78  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(connection.obj)   server
  Error   79  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(mystring.obj) server
  Error   80  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(row.obj)  server
  Error   81  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xran(void)" (?_Xran@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(result.obj)   server
  Error   82  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(null.obj) server
  Error   83  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(qparms.obj)   server
  Error   84  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(sqlstream.obj)    server
  Error   85  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(field_types.obj)  server
  Error   86  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(stadapter.obj)    server
  Error   87  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(manip.obj)    server
  Error   88  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(utility.obj)  server
  Error   89  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(datetime.obj) server
  Error   90  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(type_info.obj)    server
  Error   91  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(vallist.obj)  server
  Error   92  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(field_names.obj)  server
  Error   93  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(query.obj)    server
  Error   94  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(dbdriver.obj) server
  Error   95  error LNK2001: unresolved external symbol "public: static void __cdecl std::_String_base::_Xlen(void)" (?_Xlen@_String_base@std@@SAXXZ) D:\server\mysqlpp.lib(tcp_connection.obj)   server
  </code></pre>
  
  <p>Do the runtime symbols defined by VS2012's standard libraries differ from those suplied with VS2008?</p>