Porting gdc/dmd to Hurd

[yelninei]

On Thursday, 19 March 2026 at 16:41:41 UTC, yelninei wrote:
> Hi everyone,
>
> Over the last couple of weeks I have been trying to make 
> gdc/dmd work on GNU Hurd.
>
> This mostly involved porting druntime, wiring things up in the 
> gcc/dmd build system and telling dmd about the new OS.
>

This got merged yesterday.

  A lot of thanks to all the people here and especially Iain 
Buclaw and Nicholas Wilson.

Especially helpful was the importc_compare test for struct 
sizes/layouts where I too eagerly copied the linux or BSD 
versions.

I also created PRs for gdc and ldc to add the bit of glue code 
that should enable it to work there once they have a new enough 
druntime.

For bootstrapping I backported this back to gcc-11 and gcc-14/15 
which is how Ive been building dmd so far.

Managing 3-4 variants of more or less the same giant patch was 
definitely a challenge especially keeping them in sync while they 
are constantly changing.