Liebe Mailinglisten Leser! Vorweg sei gleich gesagt, dass ich nur sehr wenig Ahnung von C++ habe. :-(
Ich habe mir heute die libpqxx näher ansehen wollen, und bin dabei auf folgendes Problem gestoßen: [EMAIL PROTECTED]:~/C++/Postgresql Beispiele$ g++ test001.cxx /tmp/cc54Du46.o: In function `main':test001.cxx:(.text+0x2c): undefined reference to `pqxx::connection::connection()' :test001.cxx:(.text+0x12a): undefined reference to `pqxx::transaction_base::exec(char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' :test001.cxx:(.text+0x182): undefined reference to `pqxx::result::empty() const' :test001.cxx:(.text+0x373): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> > pqxx::to_string<unsigned long>(unsigned long const&)' :test001.cxx:(.text+0x53f): undefined reference to `pqxx::transaction_base::commit()' :test001.cxx:(.text+0x618): undefined reference to `pqxx::connection::~connection()' :test001.cxx:(.text+0x645): undefined reference to `pqxx::connection::~connection()' /tmp/cc54Du46.o: (.gnu.linkonce.r._ZTVN4pqxx11transactionILNS_15isolation_levelE0EEE[vtable for pqxx::transaction<(pqxx::isolation_level)0>]+0x10): undefined reference to `pqxx::basic_transaction::do_begin()' /tmp/cc54Du46.o: (.gnu.linkonce.r._ZTVN4pqxx11transactionILNS_15isolation_levelE0EEE[vtable for pqxx::transaction<(pqxx::isolation_level)0>]+0x14): undefined reference to `pqxx::dbtransaction::do_exec(char const*)' /tmp/cc54Du46.o: (.gnu.linkonce.r._ZTVN4pqxx11transactionILNS_15isolation_levelE0EEE[vtable for pqxx::transaction<(pqxx::isolation_level)0>]+0x18): undefined reference to `pqxx::basic_transaction::do_commit()' /tmp/cc54Du46.o: (.gnu.linkonce.r._ZTVN4pqxx11transactionILNS_15isolation_levelE0EEE[vtable for pqxx::transaction<(pqxx::isolation_level)0>]+0x1c): undefined reference to `pqxx::basic_transaction::do_abort()' /tmp/cc54Du46.o: (.gnu.linkonce.r._ZTIN4pqxx11transactionILNS_15isolation_levelE0EEE[typeinfo for pqxx::transaction<(pqxx::isolation_level)0>]+0x8): undefined reference to `typeinfo for pqxx::basic_transaction' /tmp/cc54Du46.o: In function `pqxx::internal::PQAlloc<pg_result>::freemem()':test001.cxx: (.gnu.linkonce.t._ZN4pqxx8internal7PQAllocI9pg_resultE7freememEv[pqxx::internal::PQAlloc<pg_result>::freemem()]+0x10): undefined reference to `pqxx::internal::freemem_result(pg_result*)' /tmp/cc54Du46.o: In function `pqxx::result::field::c_str() const':test001.cxx: (.gnu.linkonce.t._ZNK4pqxx6result5field5c_strEv[pqxx::result::field::c_str() const]+0x3a): undefined reference to `pqxx::result::GetValue(unsigned long, unsigned int) const' /tmp/cc54Du46.o: In function `pqxx::result::field::is_null() const':test001.cxx: (.gnu.linkonce.t._ZNK4pqxx6result5field7is_nullEv[pqxx::result::field::is_null() const]+0x3a): undefined reference to `pqxx::result::GetIsNull(unsigned long, unsigned int) const' /tmp/cc54Du46.o: In function `pqxx::result::end() const':test001.cxx: (.gnu.linkonce.t._ZNK4pqxx6result3endEv[pqxx::result::end() const]+0x11): undefined reference to `pqxx::result::size() const' /tmp/cc54Du46.o: In function `pqxx::basic_transaction::~basic_transaction()':test001.cxx: (.gnu.linkonce.t._ZN4pqxx17basic_transactionD2Ev[pqxx::basic_transaction::~basic_transaction()]+0x7): undefined reference to `vtable for pqxx::basic_transaction' :test001.cxx: (.gnu.linkonce.t._ZN4pqxx17basic_transactionD2Ev[pqxx::basic_transaction::~basic_transaction()]+0x18): undefined reference to `pqxx::dbtransaction::~dbtransaction()' /tmp/cc54Du46.o: In function `pqxx::transaction<(pqxx::isolation_level) 0>::transaction(pqxx::connection_base&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':test001.cxx: (.gnu.linkonce.t._ZN4pqxx11transactionILNS_15isolation_levelE0EEC1ERNS_15connection_baseERKSs[pqxx::transaction<(pqxx::isolation_level) 0>::transaction(pqxx::connection_base&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)]+0x40): undefined reference to `pqxx::basic_transaction::basic_transaction(pqxx::connection_base&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' :test001.cxx: (.gnu.linkonce.t._ZN4pqxx11transactionILNS_15isolation_levelE0EEC1ERNS_15connection_baseERKSs[pqxx::transaction<(pqxx::isolation_level) 0>::transaction(pqxx::connection_base&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)]+0x93): undefined reference to `pqxx::transaction_base::Begin()' /tmp/cc54Du46.o: In function `pqxx::transaction<(pqxx::isolation_level) 0>::~transaction()':test001.cxx: (.gnu.linkonce.t._ZN4pqxx11transactionILNS_15isolation_levelE0EED1Ev[pqxx::transaction<(pqxx::isolation_level) 0>::~transaction()]+0x18): undefined reference to `pqxx::transaction_base::End()' /tmp/cc54Du46.o: In function `pqxx::transaction<(pqxx::isolation_level) 0>::~transaction()':test001.cxx: (.gnu.linkonce.t._ZN4pqxx11transactionILNS_15isolation_levelE0EED0Ev[pqxx::transaction<(pqxx::isolation_level) 0>::~transaction()]+0x18): undefined reference to `pqxx::transaction_base::End()' collect2: ld returned 1 exit status Habe mir dann gedacht "OK, hast etwas übersehen." und den Quellcode in ein neues KDevelop Projekt kopiert. Geht dort aber auch nicht. Bin heute schon zu müde um weiter zu machen. Aber vielleicht weiß ja einer auf die Schnelle eine Antwort. :-) LG, Leonhard.
