Surprise using DMD as replacement C compiler

[Lance Bachmeier]

On Thursday, 29 February 2024 at 21:52:50 UTC, Richard (Rikki) 
Andrew Cattermole wrote:
> On 01/03/2024 10:41 AM, Lance Bachmeier wrote:
>> On Thursday, 29 February 2024 at 21:34:03 UTC, Richard (Rikki) 
>> Andrew Cattermole wrote:
>> 
>>> There are two separate issues here, my ticket is to prevent 
>>> invasive changes in a build script. What Carl's ticket is 
>>> for, is to prevent an accidental infinite recursion.
>>>
>>> Both are needed :)
>> 
>> What you're proposing would prevent infinite recursion, 
>> wouldn't it? Maybe I'm missing something. The source of the 
>> problem is grabbing the `CC` environment variable inside 
>> link.d.
>
> No.
>
> DMD_CC=dmd
>
> That'll still be recursive.

You'd be telling the compiler you want an infinite recursion if 
you do that, so it would be the intended behavior. Your original 
proposal was


```sh
DMD_CC=$CC
CC=dmd
```

which wouldn't do that.