Error Undefined Reference To Vtable Qt
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Undefined Reference To Vtable Qt Cmake
Meta Discuss the workings and policies of this site About Us Learn more about qt undefined reference to vtable for constructor Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges qt undefined reference to function Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Undefined reference to vtable. Trying to compile a Qt project up vote 41
Undefined Reference To Signal Qt
down vote favorite 4 I'm using Code::Blocks 8.02 and the mingw 5.1.6 compiler. I'm getting this error when I compile my Qt project: C:\Documents and Settings\The Fuzz\Desktop\GUI\App_interface.cpp|33|undefined reference to `vtable for AddressBook' File AddressBook.h: #ifndef ADDRESSBOOK_H #define ADDRESSBOOK_H #include
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings undefined reference to staticmetaobject and policies of this site About Us Learn more about Stack undefined reference to vtable for class qobject Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs
Error: Undefined Reference To `vtable For
Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; http://stackoverflow.com/questions/1552069/undefined-reference-to-vtable-trying-to-compile-a-qt-project it only takes a minute: Sign up Qt: Signals and slots Error: undefined reference to `vtable for up vote 18 down vote favorite 1 Following example from this link: http://developer.kde.org/documentation/books/kde-2.0-development/ch03lev1sec3.html #include
on April 24, 2009 by lizardo If you ever come across an error like this when compiling C++ code with Qt derived https://lizardo.wordpress.com/2009/04/24/undefined-reference-to-vtable-for-errors-in-qt-derived-classes/ class definitions:
g++ -Wl,--no-undefined -o test test.o -L/usr/lib -lQtGui -lQtCore -lpthread
test.o: In function `main':
test.cpp:(.text+0x2c): undefined reference to `vtable for MyClass'
http://dragly.org/2010/01/03/fixing-undefined-reference-to-vtable-for/ collect2: ld returned 1 exit status
make: *** [test] Error 1
It is probably because either you defined a class in a .cpp file undefined reference or you forgot to add some header file to the HEADERS variable in the .pro file. This happens because moc (Qt's meta-object compiler) only runs on header files by default (and only on those listed in the HEADERS variable), therefore it did not generate the necessary MOC code for that class. The fix undefined reference to is to simply move the class definition to a header, and make sure it is added to the HEADERS variable in the qmake project file. Like this:Like Loading... Related About lizardo My hobby: figure out how systems are expected to work; induce them to work unexpectedly; and responsibly disclose. View all posts by lizardo → This entry was posted in Tricks and tagged qt. Bookmark the permalink. ← Setting up libc6 sources for analysis onDebian/Ubuntu Making icecream monitor (icemon) work onJaunty → 24 Responses to "undefined reference to `vtable for …' errors" in Qt derivedclasses Bruno Abinader says: April 24, 2009 at 11:44 … or you can add something like this (supposing that MyClass definition is under MyClass.cpp file): #include "MyClass.moc" At the end of MyClass.cpp file🙂 It is very useful when you need to define private classes (see http://techbase.kde.org/Policies/Library_Code_Policy#D-Pointers ) which doesn’t need to be visible from header files. Reply Arun says: February 7, 2010 at 11:3
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