I've been trying to play with using LDC to compile to the target `arm-none-eabi` or `thumb-none-eabi`.  While I can get these targets to work with clang and my full llvm installation, I can not get my LDC to properly target them.

I played a fair deal with the target selector code in LDC.  Even trying to replace it largely with how clang does the selection, but I almost always ended up at the error:

Error: target 'thumb-none--eabi' is not yet supported

Any pointers on a direction to continue digging, or if this is just an area that's not ready yet, I'd love some info!

Thanks!

On Saturday, 5 November 2016 at 15:09:15 UTC, Thomas Muldowney wrote:
> I've been trying to play with using LDC to compile to the target `arm-none-eabi` or `thumb-none-eabi`.  While I can get these targets to work with clang and my full llvm installation, I can not get my LDC to properly target them.
>
> I played a fair deal with the target selector code in LDC.  Even trying to replace it largely with how clang does the selection, but I almost always ended up at the error:
>
> Error: target 'thumb-none--eabi' is not yet supported
>
> Any pointers on a direction to continue digging, or if this is just an area that's not ready yet, I'd love some info!
>
> Thanks!

I would first try to compile with "-c -mtriple=arm-linux-eabi", then link the object(s) using GNU ld as you would with none-eabi target. You'll still need to provide at least empty stubs for some runtime features.

On Saturday, 5 November 2016 at 15:09:15 UTC, Thomas Muldowney wrote:
> I've been trying to play with using LDC to compile to the target `arm-none-eabi` or `thumb-none-eabi`.  While I can get these targets to work with clang and my full llvm installation, I can not get my LDC to properly target them.
>
> I played a fair deal with the target selector code in LDC.  Even trying to replace it largely with how clang does the selection, but I almost always ended up at the error:
>
> Error: target 'thumb-none--eabi' is not yet supported
>
> Any pointers on a direction to continue digging, or if this is just an area that's not ready yet, I'd love some info!
>
> Thanks!

Specifying only the architecture with "-march=thumb" or "-march=arm" should also work, see [1].
There are also some DConf presentations worth watching: [2] [3].

1. https://wiki.dlang.org/Minimal_semihosted_ARM_Cortex-M_"Hello_World"
2. http://dconf.org/2014/talks/ruppe.html
3. http://dconf.org/2014/talks/franklin.html