Open MPI with D

[Martin Nowak]

On Fri, 25 Nov 2011 15:55:15 +0100, Max Samukha <maxter at spambox.com> wrote:

> On 11/25/2011 02:27 PM, Andrei Alexandrescu wrote:
>> On 11/25/11 2:13 AM, Jude Young wrote:
>>> Is there an easy way to turn D style (string[] args) into C style?
>>
>> Hm, I expected this would work:
>>
>> extern(C) int __argc;
>> extern(C) char** __argv;
>>
>> The symbols do exist at least on OSX (no linker error) but they are both
>> zero, so apparently druntime doesn't initialize them.
>>
>>
>> Andrei
>>
>
> If you want a reference to an externally defined variable, you need  
> another "extern" and (if the variable is non-TLS) - __gshared:
>
> __gshared extern extern(C) int __argc;

It also took me terribly long to find out that one for getting environ.
We could probably get rid of setErrno and getErrno which add extra C  
sources
to druntime.

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