Raw binary(to work without OS) in D

[mta`chrono]

Am 22.06.2012 19:23, schrieb Walter Bright:
> On 6/22/2012 7:11 AM, Mehrdad wrote:
>>> One way is to get the library source code for the C compiler and
>>> study it.
>> By "get" you mean "buy", right?
> 
> For Digital Mars C, yes you can buy it. For gcc, you can look at the C
> library source code for free. I'm sure the latter does the same things.
> 
>> I find that to be against D's (supposedly) open-source nature...
> 
> D is open source, however, that isn't necessarily true of C. For
> example, the Win64 version of dmd will be designed to work with
> Microsoft VS, which will cost $500.
> 
> 

I'm afright. Please explain what is meant by this, Walter.