Is `__GNUC__` defined in dmd when using importC?

[Dejan Lekic]

On Friday, 10 October 2025 at 10:06:39 UTC, felixfxu wrote:
> But that introduce another question: dmd is not a complete gcc 
> replacement I guess, but in the headers, all `#ifdef __GNUC__`

What made you think DMD is a replacement for a C compiler? 
Perhaps you are confusing importC with betterC? ImportC is there 
to help D developers easily interface with C libraries (so you do 
not have to write your own bindings). betterC is an abomination 
that may be interesting to some people but I suggest you avoid it.