(C++) undefined reference to 'Wt::WRun(int, char**, Wt::WApplication* (*)(Wt::WEnvironment const&))'

Download the Qt Creator project 'CppLinkErrorUndefinedReferenceToWtWrun' with this error
Download the Qt Creator project 'CppLinkErrorUndefinedReferenceToWtWrun' with this error fixed

Full error message


/MyFolder/main.o:: In function 'main':

/MyFolder/main.cpp:16: error: undefined reference to 'Wt::WRun(int, char**, Wt::WApplication* (*)(Wt::WEnvironment const&))'

Technical facts

Application type(s)

Desktop application

Operating system(s) or programming environment(s)

Ubuntu 10.10 (maverick)

IDE(s):

Qt Creator 2.0.0

Project type:

Console application

Compiler(s):

G++ 4.4.5

Libraries used:

Wt: version 3.1.2

Qt project file: CppLinkErrorUndefinedReferenceToWtWrun.pro


#-------------------------------------------------

#

# Project created by QtCreator 2010-12-29T17:23:02

#

#-------------------------------------------------

QT       += core

QT       -= gui

TARGET = CppLinkErrorUndefinedReferenceToWtWrun

CONFIG   += console

CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

main.cpp


//---------------------------------------------------------------------------

#include <Wt/WApplication>

//---------------------------------------------------------------------------

struct MyWtClass : public Wt::WApplication

{

  MyWtClass(const Wt::WEnvironment& env)

    : Wt::WApplication(env) {}

};

//---------------------------------------------------------------------------

Wt::WApplication * createApplication(const Wt::WEnvironment& env)

{

  return new MyWtClass(env);

}

//---------------------------------------------------------------------------

int main(int argc, char **argv)

{

  return Wt::WRun(argc, argv, &createApplication);

}

//---------------------------------------------------------------------------

Solution

Add the following line to your Qt project file:


LIBS += -lwt -lwthttp

Note that the fixed version results in the misc error stat: No such file or directory. Document root ("") not valid.

Go back to Richel Bilderbeek's C++ page.

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