Re: [AD] void* conversion errors in kcm_audio/openal.c

[Evert Glebbeek <eglebbk@xxxxxxxxxx>]

On 8 Jul 2009, at 15:25 , Kibiz0r wrote:
> Using MSVC 9.0:
>
> Error	1	error C2440: 'initializing' : cannot convert from 'void *'  
> to 'ALLEGRO_AL_DATA *'	c:\AllegroNet\Allegro\allegro\addons\kcm_audio 
> \openal.c	254	kcm_audio
<snip>
> Error	10	error C2440: 'initializing' : cannot convert from 'void *'  
> to 'ALLEGRO_AL_DATA *'	c:\AllegroNet\Allegro\allegro\addons\kcm_audio 
> \openal.c	632	kcm_audio
>
> I added the casts (attached) but that gave me a linker error that I  
> can't figure out.

Are you compiling that file as a C or a C++ file?
It shouldn't need the casts if it's compiled as C code (in fact, it  
argualy *shouldn't* have the casts).

> _al_voice_update is clearly defined in kcm_voice.c. dsound.cpp  
> references it as well, and resolved without a problem. Changing the  
> definition of _al_voice_update to _al_voice_update2 makes dsound.obj  
> fail in a different way than openal.obj:
>
> Error	1	error LNK2019: unresolved external symbol __al_voice_update  
> referenced in function __dsound_update	dsound.obj	kcm_audio
>
> Any ideas?

Again, check if you're actually compiling that file as a C file, not a  
C++ file. It seems to me that both problems may be caused by  
incorrectly compiling it as C++... I don't know for sure though.

Evert