Re: [Mingw-users] undefined reference problem when calling a method of a class from a .dll file

[Okan D. <okn...@gm...>]

Thanks for the reply. Now i understand.
I thought LoadLibrary function would do all the job for me. I went wrong.

On 08/10/2011 11:50 PM, John Brown wrote:
>
> Okan Demir wrote:
> ----------------------------------------
>    
>> When i define this class' functions in class' self block, i'm
>> able to use these functions normally. But compiler gives a 'undefined
>> reference to MyClass::MyFunc()...' error when i define function bodies
>> out side of the class block in a different file which i include class'
>> .h file into it.
>>      
>    
>> ===foo.cpp===
>> int Foo::method() {
>> ...func. body...
>> }
>>
>>      
> Note that your example foo.cpp does not include foo.h, but I will just
> assume that this is a mistake and the real foo.cpp (and also the program
> that calls Foo::method()) includes foo.h, because the error message
> would be different.
>
> The 'undefined reference to ...' error is a *linker* error. The linker
> does not know where to find this function. You need to add libfoo to the
> command line that builds the program that calls Foo::method().
>
> Regards,
> John Brown.
>
>
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