I’m currently using D to program an ATmega328P microcontroller, which interprets the AVR instruction set. Works quite well, but there are some definitions missing from the core library, such as a definition for c_long, when compiling for AVR. This makes it impossible to import parts of the standard library that rely on these definitions being there.

I’d like to add the missing features to druntime, but this requires a version switch for AVR. Is there such a switch? If not I could add it to LDC, would “AVR” be a good name?

For instance, the following code currently compiles, but ideally shouldn’t:

version (AVR)
    static assert(false);

Using ldc2 -mtriple=avr-atmel-none -mcpu=atmega328p

On Sunday, 14 June 2020 at 19:53:35 UTC, Chloé Kekoa wrote:
> I’d like to add the missing features to druntime, but this requires a version switch for AVR.

Try a v1.22 beta, version (AVR) was added with beta1.

On 14 Jun 2020, at 21:00, kinke via digitalmars-d-ldc wrote:
> On Sunday, 14 June 2020 at 19:53:35 UTC, Chloé Kekoa wrote:
>> I’d like to add the missing features to druntime, but this requires a version switch for AVR.
>
> Try a v1.22 beta, version (AVR) was added with beta1.

Also, for future reference, the table of predefined versions (not all necessarily implemented on LDC) can be found at https://dlang.org/spec/version.html#predefined-versions.

 — David

On Sunday, 14 June 2020 at 21:10:31 UTC, David Nadlinger wrote:
> On 14 Jun 2020, at 21:00, kinke via digitalmars-d-ldc wrote:
>> On Sunday, 14 June 2020 at 19:53:35 UTC, Chloé Kekoa wrote:
>>> I’d like to add the missing features to druntime, but this requires a version switch for AVR.
>>
>> Try a v1.22 beta, version (AVR) was added with beta1.
>
> Also, for future reference, the table of predefined versions (not all necessarily implemented on LDC) can be found at https://dlang.org/spec/version.html#predefined-versions.
>
>  — David

Thanks, will give that a try and see if I can add the definitions to druntime and import some more stuff from std. :)