dolfin team mailing list archive

["Garth N. Wells" <g.n.wells@xxxxxxxxxx>]

Anders Logg wrote:
> I think I found the problem. Look in your file Class2.cpp:
> 
>   #include "Class1.hpp"
> 
>   using namespace dolfin;
> 
>   Class1::Class1()
>   {}
> 
> Notice something wrong? :-)
>

I saw this too, but is doesn't help. You can get rid of Class2
completely and the problem remains. The code in LSM_grad.h still gets
compiled into Class1.o and main.o.

Garth

> /Anders
> 
> 
> On Mon, Oct 30, 2006 at 10:44:09AM +0100, Garth N. Wells wrote:
>>
>> Dag Lindbo wrote:
>> ...
>>
>>>>> I'm no C++ boffin, but it seems to me the the linker (g++) is getting
>>>>> confused over the fact there is code in the form headers that has been
>>>>> compiled multiple times (once for each class that uses the particular
>>>>> form)  . Did libtool do a better job at figuring this out? How do I use
>>>>> libtool?
>>>>>
>>>> Can you give a stripped down example where it goes wrong?
>>> The attached files are _very_ simple. Just two classes (that do nothing)
>>> and a main (that does nothing). /Dag
>>>
>> The problem seems to stem from LSM_grad.h containing definitions
>> and not just declarations. The definitions are compiled each time they
>> appear. I'm not sure how to get around it. Note that if you put the
>> definitions for Class1 and Class2 into the header files and remove
>> Class1.cpp and Class2.cpp, everything works.
>>
>> Garth
>>
>>
>>>> Garth
>>>>
>>>>> /Dag
>>>>>
>>>>>> Garth
>>>>>>
>>>>>>> Thanks a lot!
>>>>>>> Dag Lindbo
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> DOLFIN-dev mailing list
>>>>>>> DOLFIN-dev@xxxxxxxxxx
>>>>>>> http://www.fenics.org/mailman/listinfo/dolfin-dev
>>>>>>>
>>
>>
>> _______________________________________________
>> DOLFIN-dev mailing list
>> DOLFIN-dev@xxxxxxxxxx
>> http://www.fenics.org/mailman/listinfo/dolfin-dev
> _______________________________________________
> DOLFIN-dev mailing list
> DOLFIN-dev@xxxxxxxxxx
> http://www.fenics.org/mailman/listinfo/dolfin-dev
>