Qt Error Undefined Reference To Vtable For
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Undefined Reference To Vtable Qt Cmake
hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join qt undefined reference to vtable for constructor the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Undefined reference to vtable. qt undefined reference to function Trying to compile a Qt project up vote 41 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
Undefined Reference To Signal Qt
0); private: QLineEdit *nameLine; QTextEdit *addressText; }; #endif File AddressBook.cpp: #include
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The Vtable Symbol May Be Undefined Because The Class Is Missing Its Key Function
us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just http://stackoverflow.com/questions/1552069/undefined-reference-to-vtable-trying-to-compile-a-qt-project like you, helping each other. Join them; 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 class definitions:
g++ https://lizardo.wordpress.com/2009/04/24/undefined-reference-to-vtable-for-errors-in-qt-derived-classes/ -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'
collect2: ld returned 1 exit status
make: *** [test] Error 1
It is probably because either you defined a class in a .cpp file or you forgot to add some header file to undefined reference 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 is to simply move the class definition to a header, and make sure it undefined reference to 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 11:30 I had similar problem. I added the header files and cpp files in the project file and there was no error. Reply Carp says: August 2,