DMD as cross-compiler

[Jacob Carlborg]

On Thursday, 12 November 2020 at 18:58:56 UTC, Elronnd wrote:

> FWIW I started working on some stubs for a pure-d libc a while 
> back - https://github.com/moon-chilled/dlibc/.  If it were 
> completed and integrated into druntime--or, at least, if enough 
> of it were completed to support druntime+phobos--then it would 
> make for a much nicer cross-compiling experience.

That's nice. But I would prefer if druntime and Phobos did not 
depend on the C standard library, even if it's implemented in D. 
You're constrained by C and by the API of the C standard library. 
Implementing druntime and Phobos without the C standard library 
will give a big opportunity to do things better.

> Perhaps a better solution would be to link to a stub dylib of 
> libc?  (Assuming macos libc has a stable ABI.)

That's already what I'm working on [1].

>> LLD for Mach-O has bitrotted significantly and isn't really 
>> functional anymore (beyond the most basic programs). I'd 
>> recommend sticking with ld64 as the linker.

Same here, working on that as well [2].

[1] 
https://github.com/d-cross-compiler/sdk-apple/releases/tag/v0.0.1
[2] 
https://github.com/d-cross-compiler/cctools-port/releases/tag/cctools-949.0.1-ld64-530

--
/Jacob Carlborg