Specify LDC to compile specific files

[Michelle Long]

On Saturday, 2 March 2019 at 17:03:20 UTC, Jacob Carlborg wrote:
> On 2019-03-02 05:49, Michelle Long wrote:
>> The problem with LDC is that it is very slow to compile. About 
>> 10x slower than dmd. Unfortunately certain things need ldc to 
>> function such as dcompute.
>> 
>> It would be nice if one could specify certain files to compile 
>> for ldc only.
>> 
>> 
>> I guess the only way to accomplish this is to create a new 
>> project in the solution and use LDC for that?
>
> Perhaps this is a question specific for Visual Studio and I'm 
> not sure exactly what you're looking for. But generally 
> speaking you could add `version (LDC):` at the top of a file 
> and it would only be compiled if LDC is the compiler.
>

But one can only select one compiler using the build 
configuration. So in Visual D one has to use one compiler per 
project(one can switch at a click but that is it).

So version is useless to be able to do both.

Visual D could have a combo but it would then require versioning 
all the files.


If they are not ABI it might be a real problem getting it to work 
;/


> If you're using Dub you can do something like:
>
> "sourceFiles-ldc": ["some_file.d"]


And doing so will use dmd for all the others, compile some_file.d 
using ldc and then work all the details out?

This is essentially what I'm asking for in Visual D so to speak. 
To mark a file to use LDC and it will effectively do what dub is 
doing(if it is doing it as I stated).