Error[e46]: Undefined external "?cstart_call_ctors" referred in

Deniz Can Cigsar

When I declare a class variable as global, linker gives that error. As far as I understand cstartup code calls a function that calls that constructors but that implementation is missing..

What should I include?

over 11 years ago

0 Tim C over 11 years ago

TI__Mastermind 34660 points

Can you paste a snippet of the code you are using?

0 Deniz Can Cigsar over 11 years ago in reply to Tim C

Intellectual 720 points

Sure..

class Foo
{
public:
	Foo();
	int delta;
};

Foo::Foo()
{
	delta = 5;
}


Foo foo;

int main()
{
	
}

If I move Foo foo; into main(), the problem goes away. From the name I understand that cstart_call_ctors, calls constructors before main.. That is missing in the libraries..

0 Deniz Can Cigsar over 11 years ago in reply to Tim C

Intellectual 720 points

Ok, I think I found the problem.. When I created the project I didn't pay attention which template I used.. Creating new project by selecting C++ template explicitly fixed the problem.. That's interesting though..

0 Deniz Can Cigsar over 11 years ago in reply to Tim C

Intellectual 720 points

The main problem was not project file though.. IAR uses DLib for C++ projects, CLib for C projects.. ?cstart_call_ctors is in DLib.. One has to rewrite startup code.. I don't know how as there isn't much info, also startup code's are closed source as well :))

TI's closed source libraries are compiled against CLib.. So, one cannot program in C++ while using TI's closed source libraries..

Bluetooth®︎

Bluetooth forum

Error[e46]: Undefined external "?cstart_call_ctors" referred in