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I am trying to run the examples in C++ from the WebRTC source code, using the native API(not building)
My Cmakelist is:
cmake_minimum_required(VERSION 3.5)
project(WebRTC)
include_directories("D:/Clion_Projects/src/api")
include_directories("D:/abseil-cpp")
include_directories("D:/CLion_Projects/src/")
add_executable(main examples/peerconnection/server/main.cc)
And the code is:
/*
* Copyright 2011 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#if defined(WEBRTC_POSIX)
#include <sys/select.h>
#endif
#include <time.h>
#include <string>
#include <vector>
#include "absl/flags/flag.h"
#include "absl/flags/parse.h"
#include "absl/flags/usage.h"
#include "examples/peerconnection/server/data_socket.h"
#include "examples/peerconnection/server/peer_channel.h"
#include "system_wrappers/include/field_trial.h"
#include "test/field_trial.h"
ABSL_FLAG(
std::string,
force_fieldtrials,
"",
"Field trials control experimental features. This flag specifies the field "
"trials in effect. E.g. running with "
"--force_fieldtrials=WebRTC-FooFeature/Enabled/ "
"will assign the group Enabled to field trial WebRTC-FooFeature. Multiple "
"trials are separated by \"/\"");
ABSL_FLAG(int, port, 8888, "default: 8888");
static const size_t kMaxConnections = (FD_SETSIZE - 2);
void HandleBrowserRequest(DataSocket *ds, bool *quit) {
assert(ds && ds->valid());
assert(quit);
const std::string &path = ds->request_path();
*quit = (path.compare("/quit") == 0);
if (*quit) {
ds->Send("200 OK", true, "text/html", "",
"<html><body>Quitting...</body></html>");
} else if (ds->method() == DataSocket::OPTIONS) {
// We'll get this when a browsers do cross-resource-sharing requests.
// The headers to allow cross-origin script support will be set inside
// Send.
ds->Send("200 OK", true, "", "", "");
} else {
// Here we could write some useful output back to the browser depending on
// the path.
printf("Received an invalid request: %s\n", ds->request_path().c_str());
ds->Send("500 Sorry", true, "text/html", "",
"<html><body>Sorry, not yet implemented</body></html>");
}
}
int main(int argc, char *argv[]) {
absl::SetProgramUsageMessage(
"Example usage: ./peerconnection_server --port=8888\n");
absl::ParseCommandLine(argc, argv);
// InitFieldTrialsFromString stores the char*, so the char array must outlive
// the application.
const std::string force_field_trials = absl::GetFlag(FLAGS_force_fieldtrials);
webrtc::field_trial::InitFieldTrialsFromString(force_field_trials.c_str());
int port = absl::GetFlag(FLAGS_port);
// Abort if the user specifies a port that is outside the allowed
// range [1, 65535].
if ((port < 1) || (port > 65535)) {
printf("Error: %i is not a valid port.\n", port);
return -1;
}
ListeningSocket listener;
if (!listener.Create()) {
printf("Failed to create server socket\n");
return -1;
} else if (!listener.Listen(port)) {
printf("Failed to listen on server socket\n");
return -1;
}
printf("Server listening on port %i\n", port);
PeerChannel clients;
typedef std::vector<DataSocket *> SocketArray;
SocketArray sockets;
bool quit = false;
while (!quit) {
fd_set socket_set;
FD_ZERO(&socket_set);
if (listener.valid())
FD_SET(listener.socket(), &socket_set);
for (SocketArray::iterator i = sockets.begin(); i != sockets.end(); ++i)
FD_SET((*i)->socket(), &socket_set);
struct timeval timeout = {10, 0};
if (select(FD_SETSIZE, &socket_set, NULL, NULL, &timeout) == SOCKET_ERROR) {
printf("select failed\n");
break;
}
for (SocketArray::iterator i = sockets.begin(); i != sockets.end(); ++i) {
DataSocket *s = *i;
bool socket_done = true;
if (FD_ISSET(s->socket(), &socket_set)) {
if (s->OnDataAvailable(&socket_done) && s->request_received()) {
ChannelMember *member = clients.Lookup(s);
if (member || PeerChannel::IsPeerConnection(s)) {
if (!member) {
if (s->PathEquals("/sign_in")) {
clients.AddMember(s);
} else {
printf("No member found for: %s\n", s->request_path().c_str());
s->Send("500 Error", true, "text/plain", "",
"Peer most likely gone.");
}
} else if (member->is_wait_request(s)) {
// no need to do anything.
socket_done = false;
} else {
ChannelMember *target = clients.IsTargetedRequest(s);
if (target) {
member->ForwardRequestToPeer(s, target);
} else if (s->PathEquals("/sign_out")) {
s->Send("200 OK", true, "text/plain", "", "");
} else {
printf("Couldn't find target for request: %s\n",
s->request_path().c_str());
s->Send("500 Error", true, "text/plain", "",
"Peer most likely gone.");
}
}
} else {
HandleBrowserRequest(s, &quit);
if (quit) {
printf("Quitting...\n");
FD_CLR(listener.socket(), &socket_set);
listener.Close();
clients.CloseAll();
}
}
}
} else {
socket_done = false;
}
if (socket_done) {
printf("Disconnecting socket\n");
clients.OnClosing(s);
assert(s->valid()); // Close must not have been called yet.
FD_CLR(s->socket(), &socket_set);
delete (*i);
i = sockets.erase(i);
if (i == sockets.end())
break;
}
}
clients.CheckForTimeout();
if (FD_ISSET(listener.socket(), &socket_set)) {
DataSocket *s = listener.Accept();
if (sockets.size() >= kMaxConnections) {
delete s; // sorry, that's all we can take.
printf("Connection limit reached\n");
} else {
sockets.push_back(s);
printf("New connection...\n");
}
}
}
for (SocketArray::iterator i = sockets.begin(); i != sockets.end(); ++i)
delete (*i);
sockets.clear();
return 0;
}
But even after configuring the CmakeList I run into these errors:
Scanning dependencies of target main
[ 50%] Building CXX object CMakeFiles/main.dir/examples/peerconnection/server/main.cc.obj
[100%] Linking CXX executable main.exe
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `HandleBrowserRequest(DataSocket*, bool*)':
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:55: undefined reference to `DataSocket::Send(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:61: undefined reference to `DataSocket::Send(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:66: undefined reference to `DataSocket::Send(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `main':
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:72: undefined reference to `absl::SetProgramUsageMessage(absl::string_view)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:74: undefined reference to `absl::ParseCommandLine(int, char**)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:79: undefined reference to `webrtc::field_trial::InitFieldTrialsFromString(char const*)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:91: undefined reference to `SocketBase::Create()'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:94: undefined reference to `ListeningSocket::Listen(unsigned short)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:115: undefined reference to `__imp_select'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:123: undefined reference to `__WSAFDIsSet'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:124: undefined reference to `DataSocket::OnDataAvailable(bool*)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:125: undefined reference to `PeerChannel::Lookup(DataSocket*) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:126: undefined reference to `PeerChannel::IsPeerConnection(DataSocket const*)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:128: undefined reference to `DataSocket::PathEquals(char const*) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:129: undefined reference to `PeerChannel::AddMember(DataSocket*)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:132: undefined reference to `DataSocket::Send(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:135: undefined reference to `ChannelMember::is_wait_request(DataSocket*) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:139: undefined reference to `PeerChannel::IsTargetedRequest(DataSocket const*) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:141: undefined reference to `ChannelMember::ForwardRequestToPeer(DataSocket*, ChannelMember*)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:142: undefined reference to `DataSocket::PathEquals(char const*) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:143: undefined reference to `DataSocket::Send(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:147: undefined reference to `DataSocket::Send(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:156: undefined reference to `SocketBase::Close()'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:157: undefined reference to `PeerChannel::CloseAll()'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:167: undefined reference to `PeerChannel::OnClosing(DataSocket*)'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:177: undefined reference to `PeerChannel::CheckForTimeout()'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:179: undefined reference to `__WSAFDIsSet'
D:/CLion_Projects/src/examples/peerconnection/server/main.cc:180: undefined reference to `ListeningSocket::Accept() const'
CMakeFiles\main.dir/objects.a(main.cc.obj):main.cc:(.data+0x0): undefined reference to `vtable for absl::flags_internal::FlagImpl'
CMakeFiles\main.dir/objects.a(main.cc.obj):D:/CLion_Projects/src/examples/peerconnection/server/main.cc:42: undefined reference to `vtable for absl::flags_internal::FlagImpl'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `SocketBase::~SocketBase()':
D:/CLion_Projects/src/examples/peerconnection/server/data_socket.h:40: undefined reference to `SocketBase::Close()'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `PeerChannel::~PeerChannel()':
D:/CLion_Projects/src/examples/peerconnection/server/peer_channel.h:75: undefined reference to `PeerChannel::DeleteAll()'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `absl::flags_internal::FlagRegistrar<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, true>::FlagRegistrar(absl::flags_internal::Flag<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >&, char const*)':
D:/abseil-cpp/absl/flags/internal/flag.h:726: undefined reference to `absl::flags_internal::RegisterCommandLineFlag(absl::CommandLineFlag&, char const*)'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `absl::flags_internal::FlagRegistrar<int, true>::FlagRegistrar(absl::flags_internal::Flag<int>&, char const*)':
D:/abseil-cpp/absl/flags/internal/flag.h:726: undefined reference to `absl::flags_internal::RegisterCommandLineFlag(absl::CommandLineFlag&, char const*)'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > absl::UnparseFlag<int>(int const&)':
D:/abseil-cpp/absl/flags/marshalling.h:251: undefined reference to `absl::flags_internal::Unparse[abi:cxx11](int)'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `bool absl::flags_internal::InvokeParseFlag<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >(absl::string_view, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)':
D:/abseil-cpp/absl/flags/marshalling.h:195: undefined reference to `absl::flags_internal::AbslParseFlag(absl::string_view, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > absl::flags_internal::Unparse<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
D:/abseil-cpp/absl/flags/marshalling.h:208: undefined reference to `absl::flags_internal::AbslUnparseFlag[abi:cxx11](absl::string_view)'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `bool absl::flags_internal::InvokeParseFlag<int>(absl::string_view, int*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)':
D:/abseil-cpp/absl/flags/marshalling.h:195: undefined reference to `absl::flags_internal::AbslParseFlag(absl::string_view, int*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `absl::flags_internal::Flag<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::Get() const':
D:/abseil-cpp/absl/flags/internal/flag.h:618: undefined reference to `absl::flags_internal::FlagImpl::AssertValidType(void const*, std::type_info const* (*)()) const'
D:/abseil-cpp/absl/flags/internal/flag.h:622: undefined reference to `absl::flags_internal::FlagImpl::Read(void*) const'
CMakeFiles\main.dir/objects.a(main.cc.obj): In function `absl::flags_internal::Flag<int>::Get() const':
D:/abseil-cpp/absl/flags/internal/flag.h:618: undefined reference to `absl::flags_internal::FlagImpl::AssertValidType(void const*, std::type_info const* (*)()) const'
D:/abseil-cpp/absl/flags/internal/flag.h:622: undefined reference to `absl::flags_internal::FlagImpl::Read(void*) const'
collect2.exe: error: ld returned 1 exit status
mingw32-make.exe[3]: *** [CMakeFiles\main.dir\build.make:106: main.exe] Error 1
mingw32-make.exe[2]: *** [CMakeFiles\Makefile2:95: CMakeFiles/main.dir/all] Error 2
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:102: CMakeFiles/main.dir/rule] Error 2
mingw32-make.exe: *** [Makefile:137: main] Error 2
I don't understand why I am getting these errors, since I am running the example as is from the repo.
Any help would be greatly appreciated!
UPDATE
Solved the issue. The was the structure of the g++ command. This one worked for me:
g++ tutorial.cpp -I/opt/local/include -I/usr/include/boost -L/opt/local/lib -lmongoclient -lboost_thread -lboost_system -lboost_regex -o tutorial
OS: Ubuntu 16.04 64-bit
Following this tutorial:
https://mongodb.github.io/mongo-cxx-driver/legacy-v1/tutorial/
I'm able to build the mongodb-client using SCons with no issue.
mongo folder of header files here:
/opt/local/include
libmongoclient.a file here:
/opt/local/lib
Code is as follows, same as the tutorial:
#include <cstdlib>
#include <iostream>
#include "mongo/client/dbclient.h" // for the driver
void run() {
mongo::DBClientConnection c;
c.connect("localhost");
}
int main() {
mongo::client::initialize();
try {
run();
std::cout << "connected ok" << std::endl;
} catch( const mongo::DBException &e ) {
std::cout << "caught " << e.what() << std::endl;
}
return EXIT_SUCCESS;
}
This is the command I'm using to compile:
g++ -I/opt/local/include -L/opt/local/lib -pthread -lmongoclient -lboost_thread -lboost_system -lboost_filesystem -lboost_program_options tutorial.cpp -o tutorial
I receive the following error
/tmp/cceJe78D.o: In function `run()':
tutorial.cpp:(.text+0x34): undefined reference to `mongo::DBClientConnection::DBClientConnection(bool, mongo::DBClientReplicaSet*, double)'
/tmp/cceJe78D.o: In function `main':
tutorial.cpp:(.text+0x12f): undefined reference to `mongo::client::Options::Options()'
tutorial.cpp:(.text+0x148): undefined reference to `mongo::client::initialize(mongo::client::Options const&)'
/tmp/cceJe78D.o: In function `__static_initialization_and_destruction_0(int, int)':
tutorial.cpp:(.text+0x299): undefined reference to `boost::system::generic_category()'
tutorial.cpp:(.text+0x2a5): undefined reference to `boost::system::generic_category()'
tutorial.cpp:(.text+0x2b1): undefined reference to `boost::system::system_category()'
/tmp/cceJe78D.o: In function `mongo::DBException::DBException(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)':
tutorial.cpp:(.text._ZN5mongo11DBExceptionC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi[_ZN5mongo11DBExceptionC5ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi]+0x21): undefined reference to `vtable for mongo::DBException'
/tmp/cceJe78D.o: In function `mongo::DBException::~DBException()':
tutorial.cpp:(.text._ZN5mongo11DBExceptionD2Ev[_ZN5mongo11DBExceptionD5Ev]+0x10): undefined reference to `vtable for mongo::DBException'
/tmp/cceJe78D.o: In function `mongo::DBException::addContext(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
tutorial.cpp:(.text._ZN5mongo11DBException10addContextERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE[_ZN5mongo11DBException10addContextERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE]+0x33): undefined reference to `mongo::causedBy(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/tmp/cceJe78D.o: In function `mongo::UserException::UserException(int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
tutorial.cpp:(.text._ZN5mongo13UserExceptionC2EiRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE[_ZN5mongo13UserExceptionC5EiRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE]+0x2a): undefined reference to `vtable for mongo::UserException'
/tmp/cceJe78D.o: In function `mongo::UserException::~UserException()':
tutorial.cpp:(.text._ZN5mongo13UserExceptionD2Ev[_ZN5mongo13UserExceptionD5Ev]+0xd): undefined reference to `vtable for mongo::UserException'
/tmp/cceJe78D.o: In function `mongo::DBClientConnection::~DBClientConnection()':
tutorial.cpp:(.text._ZN5mongo18DBClientConnectionD2Ev[_ZN5mongo18DBClientConnectionD5Ev]+0xe): undefined reference to `vtable for mongo::DBClientConnection'
tutorial.cpp:(.text._ZN5mongo18DBClientConnectionD2Ev[_ZN5mongo18DBClientConnectionD5Ev]+0x1a): undefined reference to `vtable for mongo::DBClientConnection'
tutorial.cpp:(.text._ZN5mongo18DBClientConnectionD2Ev[_ZN5mongo18DBClientConnectionD5Ev]+0x2c): undefined reference to `mongo::DBClientConnection::_numConnections'
tutorial.cpp:(.text._ZN5mongo18DBClientConnectionD2Ev[_ZN5mongo18DBClientConnectionD5Ev]+0xbb): undefined reference to `mongo::DBClientBase::~DBClientBase()'
tutorial.cpp:(.text._ZN5mongo18DBClientConnectionD2Ev[_ZN5mongo18DBClientConnectionD5Ev]+0x189): undefined reference to `mongo::DBClientBase::~DBClientBase()'
/tmp/cceJe78D.o: In function `mongo::DBClientConnection::connect(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
tutorial.cpp:(.text._ZN5mongo18DBClientConnection7connectERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE[_ZN5mongo18DBClientConnection7connectERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE]+0x78): undefined reference to `mongo::HostAndPort::HostAndPort(mongo::StringData const&)'
/tmp/cceJe78D.o:(.gcc_except_table+0x50): undefined reference to `typeinfo for mongo::DBException'
/tmp/cceJe78D.o:(.rodata._ZTVN5mongo16ConnectExceptionE[_ZTVN5mongo16ConnectExceptionE]+0x30): undefined reference to `mongo::UserException::appendPrefix(std::__cxx11::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) const'
/tmp/cceJe78D.o:(.rodata._ZTVN5mongo16ConnectExceptionE[_ZTVN5mongo16ConnectExceptionE]+0x40): undefined reference to `mongo::DBException::toString[abi:cxx11]() const'
/tmp/cceJe78D.o:(.rodata._ZTVN5mongo18AssertionExceptionE[_ZTVN5mongo18AssertionExceptionE]+0x40): undefined reference to `mongo::DBException::toString[abi:cxx11]() const'
/tmp/cceJe78D.o:(.rodata._ZTIN5mongo16ConnectExceptionE[_ZTIN5mongo16ConnectExceptionE]+0x10): undefined reference to `typeinfo for mongo::UserException'
/tmp/cceJe78D.o:(.rodata._ZTIN5mongo18AssertionExceptionE[_ZTIN5mongo18AssertionExceptionE]+0x10): undefined reference to `typeinfo for mongo::DBException'
collect2: error: ld returned 1 exit status
I've searched around Google, and saw some people with the same issue, but they didn't appear to be linking files correctly. As far as I can tell I'm doing everything correctly.
Any help would be greatly appreciated.
EDIT
Output if I change the command to:
g++ tutorial.cpp -I/opt/local/include -I/usr/include/boost -L/opt/local/lib -pthread -lmongoclient -lboost_thread -lboost_system -lboost_filesystem -lboost_program_options -o tutorial
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::assign(char const*, char const*, unsigned int)':
/usr/include/boost/regex/v4/basic_regex.hpp:380: undefined reference to `boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind_extra_block(bool)':
/usr/include/boost/regex/v4/perl_matcher_non_recursive.hpp:1135: undefined reference to `boost::re_detail::put_mem_block(void*)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::cpp_regex_traits<char>::transform_primary(char const*, char const*) const':
/usr/include/boost/regex/v4/cpp_regex_traits.hpp:965: undefined reference to `boost::re_detail::cpp_regex_traits_implementation<char>::transform_primary(char const*, char const*) const'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::cpp_regex_traits<char>::transform(char const*, char const*) const':
/usr/include/boost/regex/v4/cpp_regex_traits.hpp:961: undefined reference to `boost::re_detail::cpp_regex_traits_implementation<char>::transform(char const*, char const*) const'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `void boost::re_detail::raise_error<boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > >(boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::error_type)':
/usr/include/boost/regex/pattern_except.hpp:75: undefined reference to `boost::re_detail::raise_runtime_error(std::runtime_error const&)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::cpp_regex_traits_implementation<char>::error_string(boost::regex_constants::error_type) const':
/usr/include/boost/regex/v4/cpp_regex_traits.hpp:448: undefined reference to `boost::re_detail::get_default_error_string(boost::regex_constants::error_type)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::extend_stack()':
/usr/include/boost/regex/v4/perl_matcher_non_recursive.hpp:213: undefined reference to `boost::re_detail::get_mem_block()'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::save_state_init::save_state_init(boost::re_detail::saved_state**, boost::re_detail::saved_state**)':
/usr/include/boost/regex/v4/perl_matcher_non_recursive.hpp:107: undefined reference to `boost::re_detail::get_mem_block()'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_imp()':
/usr/include/boost/regex/v4/perl_matcher_common.hpp:208: undefined reference to `boost::re_detail::verify_options(unsigned int, boost::regex_constants::_match_flags)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::save_state_init::~save_state_init()':
/usr/include/boost/regex/v4/perl_matcher_non_recursive.hpp:115: undefined reference to `boost::re_detail::put_mem_block(void*)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_prefix()':
/usr/include/boost/regex/v4/perl_matcher_common.hpp:333: undefined reference to `boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::save_state_init::~save_state_init()':
/usr/include/boost/regex/v4/perl_matcher_non_recursive.hpp:115: undefined reference to `boost::re_detail::put_mem_block(void*)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::perl_matcher(__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags, __gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >)':
/usr/include/boost/regex/v4/perl_matcher.hpp:365: undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)'
/opt/local/lib/libmongoclient.a(dbclient.o): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_match()':
/usr/include/boost/regex/v4/perl_matcher_non_recursive.hpp:991: undefined reference to `boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)'
collect2: error: ld returned 1 exit status
In your g++ command, try to have tutorial.cpp first before the other libs. Some linkers needs to see the objects that need symbols first (from left to right)
I installed boost on ubuntu 10.04 by
sudo apt-get install libboost-dev
I think after that I don't need to set any -I and -L flags, so I compile my code by
g++ test.cpp
Here is my test.cpp
#include <iostream>
#include <string>
#include <set>
#include <sstream>
#include <boost/config.hpp>
#include <boost/program_options/detail/config_file.hpp>
#include <boost/program_options/parsers.hpp>
namespace pod = boost::program_options::detail;
int main()
{
//contents
std::stringstream s(
"a = 1\n"
"b = 2\n"
"c = test option\n");
//parameters
std::set<std::string> options;
options.insert("a");
options.insert("b");
options.insert("c");
//parser
for (pod::config_file_iterator i(s, options), e ; i != e; ++i)
{
std::cout << i->value[0] << std::endl;
}
}
I think things will goes well but actually there are some errors:
/tmp/ccNQEbJM.o: In function `boost::program_options::detail::basic_config_file_iterator<char>::basic_config_file_iterator(std::basic_istream<char, std::char_traits<char> >&, std::set<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, bool)':
a.cpp:(.text._ZN5boost15program_options6detail26basic_config_file_iteratorIcEC1ERSiRKSt3setISsSt4lessISsESaISsEEb[boost::program_options::detail::basic_config_file_iterator<char>::basic_config_file_iterator(std::basic_istream<char, std::char_traits<char> >&, std::set<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, bool)]+0x24): undefined reference to `boost::program_options::detail::common_config_file_iterator::common_config_file_iterator(std::set<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, bool)'
a.cpp:(.text._ZN5boost15program_options6detail26basic_config_file_iteratorIcEC1ERSiRKSt3setISsSt4lessISsESaISsEEb[boost::program_options::detail::basic_config_file_iterator<char>::basic_config_file_iterator(std::basic_istream<char, std::char_traits<char> >&, std::set<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, bool)]+0x5f): undefined reference to `boost::program_options::detail::common_config_file_iterator::get()'
/tmp/ccNQEbJM.o: In function `boost::eof_iterator<boost::program_options::detail::common_config_file_iterator, boost::program_options::basic_option<char> >::increment()':
a.cpp:(.text._ZN5boost12eof_iteratorINS_15program_options6detail27common_config_file_iteratorENS1_12basic_optionIcEEE9incrementEv[boost::eof_iterator<boost::program_options::detail::common_config_file_iterator, boost::program_options::basic_option<char> >::increment()]+0x10): undefined reference to `boost::program_options::detail::common_config_file_iterator::get()'
/tmp/ccNQEbJM.o: In function `boost::program_options::detail::basic_config_file_iterator<char>::getline(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
a.cpp:(.text._ZN5boost15program_options6detail26basic_config_file_iteratorIcE7getlineERSs[boost::program_options::detail::basic_config_file_iterator<char>::getline(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)]+0x5b): undefined reference to `boost::program_options::to_internal(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
collect2: ld returned 1 exit status
I can't figure out where and why I went wrong.
You need to link to the Boost program_options library as not everything in Boost is pure templates:
edd#max:/tmp$ cat bpoex.cpp
#include <iostream>
#include <string>
#include <set>
#include <sstream>
#include <boost/config.hpp>
#include <boost/program_options/detail/config_file.hpp>
#include <boost/program_options/parsers.hpp>
namespace pod = boost::program_options::detail;
int main()
{
//contents
std::stringstream s(
"a = 1\n"
"b = 2\n"
"c = test option\n");
//parameters
std::set<std::string> options;
options.insert("a");
options.insert("b");
options.insert("c");
//parser
for (pod::config_file_iterator i(s, options), e ; i != e; ++i)
{
std::cout << i->value[0] << std::endl;
}
}
edd#max:/tmp$ g++ -o bpoex bpoex.cpp -lboost_program_options
edd#max:/tmp$ ./bpoex
1
2
test option
edd#max:/tmp$
I've got a program that uses tr1::regex, and while it compiles, it gives me very verbose linker errors.
Here's my header file MapObject.hpp:
#include <iostream>
#include <string>
#include <tr1/regex>
#include "phBaseObject.hpp"
using std::string;
namespace phObject
{
class MapObject: public phBaseObject
{
private:
string color; // must be a hex string represented as "#XXXXXX"
static const std::tr1::regex colorRX; // enforces the rule above
public:
void setColor(const string&);
(...)
};
}
Here's my implementation:
#include <iostream>
#include <string>
#include <tr1/regex>
#include "MapObject.hpp"
using namespace std;
namespace phObject
{
const tr1::regex MapObject::colorRX("#[a-fA-F0-9]{6}");
void MapObject::setColor(const string& c)
{
if(tr1::regex_match(c.begin(), c.end(), colorRX))
{
color = c;
}
else cerr << "Invalid color assignment (" << c << ")" << endl;
}
(...)
}
and now for the errors:
max#max-desktop:~/Desktop/Development/CppPartyHack/PartyHack/lib$ g++ -Wall -std=c++0x MapObject.cpp
/tmp/cce5gojG.o: In function std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(char const*, unsigned int)':
MapObject.cpp:(.text._ZNSt3tr111basic_regexIcNS_12regex_traitsIcEEEC1EPKcj[std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(char const*, unsigned int)]+0x61): undefined reference tostd::tr1::basic_regex >::_M_compile()'
/tmp/cce5gojG.o: In function bool std::tr1::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, char, std::tr1::regex_traits<char> >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::tr1::basic_regex<char, std::tr1::regex_traits<char> > const&, std::bitset<11u>)':
MapObject.cpp:(.text._ZNSt3tr111regex_matchIN9__gnu_cxx17__normal_iteratorIPKcSsEEcNS_12regex_traitsIcEEEEbT_S8_RKNS_11basic_regexIT0_T1_EESt6bitsetILj11EE[bool std::tr1::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, char, std::tr1::regex_traits<char> >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::tr1::basic_regex<char, std::tr1::regex_traits<char> > const&, std::bitset<11u>)]+0x53): undefined reference tobool std::tr1::regex_match<__gnu_cxx::__normal_iterator, std::allocator > >, std::allocator, std::allocator > > > >, char, std::tr1::regex_traits >(__gnu_cxx::__normal_iterator, std::allocator > >, __gnu_cxx::__normal_iterator, std::allocator > >, std::tr1::match_results<__gnu_cxx::__normal_iterator, std::allocator > >, std::allocator, std::allocator > > > > >&, std::tr1::basic_regex > const&, std::bitset<11u>)'
collect2: ld returned 1 exit status
I can't really make heads or tails of this, except for the undefined reference to std::tr1::basic_regex near the beginning. Anyone know what's going on?
Regex support for C++0x is incomplete and wasn't there for TR1, see the implementation status page for C++0x/TR1.
Boost offers an alternative TR1 implementation as well as the original library it is based on.
The answer is, even though the header is supplied, some of the methods are not supplied.
One could deduce this from Georg's answer, but after thinking up and coding a hundred lines or so based on the assumption that the nifty library was actually provided, one might be too tired for any further deductions.
I have written a class using std::tr1::regex, and I don't know how to link it. I get (sorry for the large dump...) :
$ g++ DictReader.cpp -std=c++0x
/usr/include/c++/4.4/tr1_impl/regex:2255: warning: inline function ‘bool std::tr1::regex_search(_Bi_iter, _Bi_iter, std::tr1::match_results<_Bi_iter, _Allocator>&, const std::tr1::basic_regex<_Ch_type, _Rx_traits>&, std::tr1::regex_constants::match_flag_type) [with _Bi_iter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, _Allocator = std::allocator<std::tr1::sub_match<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, _Ch_type = char, _Rx_traits = std::tr1::regex_traits<char>]’ used but never defined
/usr/lib/gcc/x86_64-linux-gnu/4.4.1/../../../../lib/crt1.o: In function `_start':
/build/buildd/eglibc-2.10.1/csu/../sysdeps/x86_64/elf/start.S:109: undefined reference to `main'
/tmp/ccgBkWlK.o: In function `DictReader::operator++(int)':
DictReader.cpp:(.text+0xb2a): undefined reference to `bool std::tr1::regex_search<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::tr1::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, char, std::tr1::regex_traits<char> >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::tr1::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::tr1::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, std::tr1::basic_regex<char, std::tr1::regex_traits<char> > const&, std::bitset<11ul>)'
/tmp/ccgBkWlK.o: In function `std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(char const*, unsigned int)':
DictReader.cpp:(.text._ZNSt3tr111basic_regexIcNS_12regex_traitsIcEEEC1EPKcj[std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(char const*, unsigned int)]+0x75): undefined reference to `std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::_M_compile()'
/tmp/ccgBkWlK.o: In function `std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(std::tr1::basic_regex<char, std::tr1::regex_traits<char> > const&)':
DictReader.cpp:(.text._ZNSt3tr111basic_regexIcNS_12regex_traitsIcEEEC1ERKS3_[std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(std::tr1::basic_regex<char, std::tr1::regex_traits<char> > const&)]+0x60): undefined reference to `std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::_M_compile()'
collect2: ld returned 1 exit status.
What should I link against?
This is a linker error, it does not found the function you are using. TR1 is still new so it may not be implemented everywhere. I recommend you to use the boost regex library instead.