Hi Bruce, thanks for your swift reply

I'm not building with Xcode, but with a Makefile for OS X (makefile.osx).
I'm guessing the latter somehow defines __MACOSX_CORE__, so I figure I need
to create a Makefile tailored for Emscripten.

Thanks,
Arve

On Tue, Sep 2, 2014 at 3:59 AM, Bruce Mitchener <[email protected]>
wrote:

> Arve,
>
> You'll notice in the code that that is wrapped with:
>
> #if defined(__MACOSX_CORE__)
> #include <AvailabilityMacros.h>
> #endif
>
> In emscripten, __MACOSX_CORE__ shouldn't be defined.
>
> We check to see what emcc / em++ is defining, with this:
>
>   emcc -dM -E -x c /dev/null
>
> It isn't defining __MACOSX_CORE__ ... so something else in your build
> environment must be. (It is worth noting that clang doesn't set that
> either, so this is something coming from ChucK probably.
>
> Doing a quick search shows that the Xcode project is the one setting that
> define ... are you still trying to build with Xcode?
>
> (And it requires that one of the right platforms be set up and it doesn't
> look like someone has done that yet for emscripten, so I assume that's your
> end goal here?)
>
>  - Bruce
>
>
>
> On Tue, Sep 2, 2014 at 3:42 AM, Arve Knudsen <[email protected]>
> wrote:
>
>> Hi
>>
>> I'm trying to port the ChucK C++ project (https://github.com/ccrma/chuck)
>> to JS with Emscripten (1.22.0), but after substituting emcc for clang and
>> clang++, building on OS X fails due to AvailabilityMacros.h not being found:
>>
>>     ./chuck_dl.h:661:10: fatal error: 'AvailabilityMacros.h' file not
>> found
>>
>> Is this a known problem? From googling, it appears to be an OS X system
>> header.
>>
>> If I only substitute the C compiler, the build breaks due to another
>> issue:
>>
>>     lo/message.c:160:11: error: cannot compile this aggregate va_arg
>> expression yet
>>                 tt = va_arg(ap, lo_timetag);
>>
>> Is there any solution at this point for this last problem?
>>
>> Thanks,
>> Arve
>>
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