Arve,

emscripten imposes limits on what can be passed through a va_arg.  Alon
will have to help further on this as I don't know what the rules are.

 - Bruce



On Tue, Sep 2, 2014 at 5:48 PM, Arve Knudsen <[email protected]> wrote:

> Bruce, do you know if there's a solution for the below compilation issue
> though?
>
>     lo/message.c:160:11: error: cannot compile this aggregate va_arg
> expression yet
>                 tt = va_arg(ap, lo_timetag);
>
> Thanks,
> Arve
>
>
> On Tue, Sep 2, 2014 at 12:24 PM, Arve Knudsen <[email protected]>
> wrote:
>
>> 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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>>>
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>>
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