Re: Compiling OpenEXR on Windows

On 17/03/2014 08:34 p.m., Gonzalo Garramuño wrote:
> On 17/03/2014 05:45 p.m., Thorsten Kaufmann wrote:
>> I guess it has to do with this warning:
>>
>> 3>half.obj : warning LNK4197: export '?_toFloat@half@@0QBTuif@1@B' 
>> specified multiple times; using first specification
>> 3>half.obj : warning LNK4197: export '?_eLut@half@@0QBGB' specified 
>> multiple times; using first specification
>>
>> Though i am unsure how to fix that.
>
> Also, I tried the lib on a simple program which linked fine but the 
> output was garbage:
>
> #include <iostream>
> #include <half.h>
>
>
> int main()
> {
>    half p = 0.5f;
>    std::cerr << p << std::endl;
> }
>
> $ cd <mydir>
> $ cl.exe -EHsc -IF:/code/lib/Deploy/include half.cpp -link 
> -libpath:F:/code/lib/Deploy/lib/x64/Release Half.lib
> $ cp F:/code/lib/Deploy/bin/x64/Release Half.dll .
> $ half.exe
> 7.53516
>
> huh?  On linux this prints out 0.5 as it should.
>
>
It seems I need to put -DOPENEXR_DLL in the command line and then 
everything is fine.