undefined reference to `_D15TypeInfo_Struct6__vtblZ'

[Mike]

On Monday, 23 December 2013 at 12:57:33 UTC, Johannes Pfau wrote:
> Am Mon, 23 Dec 2013 12:03:09 +0000
> schrieb "Mike" <none at none.com>:
>
>> Thanks for all the help lately.  I'm sorry to be flooding this 
>> list with so many questions, but I'm making good progress, and 
>> still running into some things I don't quite understand.
>> 
>> I'm getting the following linker error as soon as I add a 
>> struct to my code.
>> 
>> undefined reference to `_D15TypeInfo_Struct6__vtblZ'
>> 
>
> It looks like you didn't compile object.d? The vtblZ symbols 
> are only
> generated when you compile a .d file and then you have to link 
> in the
> resulting object file, importing alone is not enough.
>
> So something like
> arm-eabi-gdc object.d -o object.o
> link object.o start.o -o start

Thanks johannes.  I already tried just as you suggested, but when 
I tried it, I ended up with multiple definitions as shown below.  
This is why I assumed it was compiled automatically

start.o:(.rodata._D6Object6__initZ+0x0): multiple definition of 
`_D6Object6__initZ'
object.o:(.rodata._D6Object6__initZ+0x0): first defined here
start.o:(.rodata._D6Object6__vtblZ+0x0): multiple definition of 
`_D6Object6__vtblZ'
object.o:(.rodata._D6Object6__vtblZ+0x0): first defined here
start.o:(.data._D6Object7__ClassZ+0x0): multiple definition of 
`_D6Object7__ClassZ'
object.o:(.data._D6Object7__ClassZ+0x0): first defined here
start.o:(.rodata._D14TypeInfo_Class6__vtblZ+0x0): multiple 
definition of `_D14TypeInfo_Class6__vtblZ'
object.o:(.rodata._D14TypeInfo_Class6__vtblZ+0x0): first defined 
here


So I'm quite confused.  Do I need and object.di file instead? Is 
there something to naming "object_.d" (trailing underscore) 
instead of "object.d"?