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I just added Interval::~Interval(){} and it worked! –Amir Oct 11 '11 at 0:39 add a comment| up vote 1 down vote I had the same problem. more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation c++ gcc linker-error share|improve this question edited Mar 1 '13 at 11:35 Peter Wood 11.8k32254 asked Mar 1 '13 at 9:59 Mary Grace Isanan Viaje 3717 marked as duplicate by Luchian Who is the highest-grossing debut director? http://softacoustik.com/undefined-reference/linker-error-undefined-reference-to-vtable-for.php

What do you call "intellectual" jobs? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed When everyone else gets your changes and runs make, make will see that the .pro file has changed and automatically run qmake. share|improve this answer edited Oct 11 '11 at 0:40 answered Oct 11 '11 at 0:35 bdonlan 134k18185269 1 But the linker error is coming from default constructor Interval::Interval() as well. http://stackoverflow.com/questions/8830025/linker-error-undefined-reference-to-vtable-for-square

Error Undefined Reference To Vtable For Qt

Box around continued fraction Is it correct to write "teoremo X statas, ke" in the sense of "theorem X states that"? How do you curtail too much customer input on website design? more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation My header file went in a library somewhere, but all the virtual functions were declared 'inline' in the class declaration.

Join them; it only takes a minute: Sign up Link error missing vtable up vote 0 down vote favorite I'm defining a class 'function' and two others classes 'polynomial' and 'affine' If you are using Qt or a project with a Makefile, you could just run these three commands (the first only applies to Qt projects). share|improve this answer answered Nov 3 '10 at 21:26 awallin 111 add a comment| up vote 0 down vote If you have a base class with pure virtual function, make sure Undefined Reference To Vtable For Destructor How is the ATC language structured?

There are some cases where it's justified to leave out the definition for a declared function, but they are very rare. The Vtable Symbol May Be Undefined Because The Class Is Missing Its Key Function Why won't a series converge if the limit of the sequence is 0? What examples are there of funny connected waypoint names or airways that tell a story? http://stackoverflow.com/questions/7720205/linking-error-undefined-reference-to-vtable-for-xxx Try to compile your project with only a few test files, but link and use the libraries you need.

If you can't figure it out, see if you can create a simple example that reproduces the error and post it here. Undefined Reference To Vtable Qobject the errors occur at the contructor and destructor definitions. The error message is really misleading. –mishmashru Apr 24 '13 at 17:14 | show 2 more comments up vote 50 down vote Qt C++ will show this error when you change I'm using MinGW with GCC and GNU-Make.

The Vtable Symbol May Be Undefined Because The Class Is Missing Its Key Function

Much like a normal linker error, it's because the compiler knew what you were talking about, but the linker couldn't find the definition. Because it is static (Section 2.9), the definition for s_Cm belongs in dataobject.cpp. Error Undefined Reference To Vtable For Qt Error: Unable to find libxxx.so.x For Win32 Users At compile-time, your IDE needs to find the .DLL. Undefined Reference To Vtable For Constructor Wardogs in Modern Combat How do you get a dragon head in Minecraft?

fourSided::fourSided() { this -> y = 0; this -> width = 0; this -> height = 0; this -> color = BLACK; this -> point = Point( x, y ); this useful reference I've also cleaned the environment. It means that the linker cannot find the definition of some named entity in your code. Not the answer you're looking for? Undefined Reference To Vtable For C++

plugin.o: classes.cpp classes.h $(CPP) -DBUILDING_DLL -c -o [email protected] classes.cpp Apr 27, 2012 at 10:37pm UTC vlad from moscow (6539) I think the problem is that you did not define testFunc in You have saved my life. Equation which has to be solved with logarithms USB in computer screen not working more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work http://softacoustik.com/undefined-reference/linker-error-undefined-reference-vtable.php virtual void foo(Many params, As part, Of veryLong, Method signature); and theirs: virtual void foo(Many params, As part, Of veryLong, Method signature) const; When merging I picked the first version, but

One hint is in the error message: [Linker error] main.o:main.cpp:(.text$_ZN7MachineC2Ev[Machine::Machine()]+0x8): undefined reference to `vtable for Machine' Here -------------------------------------------------^^^^^^^^^^^^^^^^ Implement the constructors and destructors and it should work. Undefined Reference To Vtable For Class C++ The determinant of the matrix Is it correct to write "teoremo X statas, ke" in the sense of "theorem X states that"? Join them; it only takes a minute: Sign up linker error: missing vtable up vote 0 down vote favorite I'm getting a linker error in xcode and I'm having a hard

I looked for that online, yet still I couldn't find the problem.

and the corresponding cpp file defines ALL the methods in the class template. The compiler generally tells you the exact location of any error that it detects. You describe implementing only the constructor. Undefined Reference To `typeinfo For My class looked like this: //----------------------------------------- // libbase.h class base { public: base() { } virtual ~base() { } virtual int foo() { return 0; } } //----------------------------------------- //----------------------------------------- // libbase.cpp

Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count). share|improve this answer answered Jun 2 '11 at 7:51 mschachter 9111 Thanks! Tip After this kind of linker error, check first that all files are listed properly in the project file, all QObjects have a proper Q_OBJECT macro, do a "qmake && make get redirected here All classes are in a same file for a pilot program. #include #include #include using namespace std; #define MAX_IP_RANGE 4294967295 class Interval { public: virtual Interval * interval_copy()

You could be on to something though. thanks –wanderameise Jan 30 '14 at 17:00 1 Also, if you forget to add the class to the *.pro file's HEADER's section you'll get the same error. asked 5 years ago viewed 23769 times active 3 months ago Related 158Undefined reference to static class member131g++ undefined reference to typeinfo64GCC C++ Linker errors: Undefined reference to 'vtable for XXX', All methods have matching parameters 3.

Is a food chain without plants plausible? I had the following code in the class definition: class ScreenWidget : public QGLWidget { Q_OBJECT // must include this if you use Qt signals/slots ... }; I had to remove But the vtable had been discarded. My main issue is that I'm still getting this for the Square class, which was supposed to inherit from the Polygon class.

What happens if one brings more than 10,000 USD with them into the US? How do I ensure my code/project is 64bit? Topic archived. Code Polygon.h/.cpp #ifndef POLYGON_H #define POLYGON_H #include "Shape.h" #include "vector3f.h" class Polygon { public: Polygon(); virtual void Collide(Shape &s) = 0; virtual void Collide(Polygon &p) = 0; virtual bool Intersects(const Shape

Red balls and Rings Spaced-out numbers How to decipher Powershell syntax for text formatting? In Visual Studio I created a x64 build config. –Alex Black Jul 7 '09 at 23:07 1 Is there a way to confirm the 3rd party library is 64bit? Public huts to stay overnight around UK Why won't a series converge if the limit of the sequence is 0? C++ Information Tutorials Reference Articles Forum Forum BeginnersWindows ProgrammingUNIX/Linux ProgrammingGeneral C++ ProgrammingLoungeJobs Home page | Privacy policy© cplusplus.com, 2000-2016 - All rights reserved - v3.1Spotted an error?

Different precision for masses of moon and earth online Why is JK Rowling considered 'bad at math'? You can find me everywhere How do you get a dragon head in Minecraft? Join them; it only takes a minute: Sign up Linker Error: Undefined Reference to `vtable for square` up vote 0 down vote favorite 1 I've checked the most common undefined reference class ISettings { public: virtual ~ISettings() {}; virtual void OKFunction() =0; virtual void ProblemFunction(); // missing =0 }; class Settings : ISettings { virtual ~Settings() {}; void OKFunction(); void ProblemFunction(); };