Hi, In the development of my library, I'm in a position where I need to add support for multiple compilers. For instance, supporting both the assembly of LDC/DMD and GDC. I want to do something like:

version(DigitalMars && LDC)
{
}

However, it doesn't compile which forces me to rewrote the same code for both DigitalMars and LDC

version(DigitalMars)
{
}

version(LDC)
{
}

Is there a way to check both versions at the same time? (I can't seem to find the solution through google, sorry)

Thanks,
Danyal Zia

Danyal Zia:

> Is there a way to check both versions at the same time? (I can't seem to find the solution through google, sorry)

This is close to being the best solution in D (untested):

version(DigitalMars) enum myMars = true; else enum myMars = false;
version(LDC) enum myLdc = true; else enum myLdc = false;
enum myMarsOrLdc = myMars || myLdc;

static if (myMarsOrLdc) {
    ...
} else {
    ...
}

Bye,
bearophile

On Wed, 25 Jun 2014 20:24:30 +0000, Danyal Zia wrote:

> Hi, In the development of my library, I'm in a position where I need to add support for multiple compilers. For instance, supporting both the assembly of LDC/DMD and GDC. I want to do something like:
> 
> version(DigitalMars && LDC)
> {
> }
> 
> However, it doesn't compile which forces me to rewrote the same code for both DigitalMars and LDC
> 
> version(DigitalMars)
> {
> }
> 
> version(LDC)
> {
> }
> 
> Is there a way to check both versions at the same time? (I can't seem to find the solution through google, sorry)
> 
> Thanks,
> Danyal Zia

I think you mean ||, not &&.  The best way I know around this is to define enums:

version (DigitalMars)
   enum compiler_DigitalMars = true;
else
   enum compiler_DigitalMars = false;

//... similar for LDC

static if (compiler_DigitalMars || compiler_LDC)
{
   ...
} else {
   ...
}

On Wednesday, 25 June 2014 at 20:30:28 UTC, Justin Whear wrote:
> I think you mean ||, not &&.  The best way I know around this is to
> define enums:
>
> version (DigitalMars)
>    enum compiler_DigitalMars = true;
> else
>    enum compiler_DigitalMars = false;
>
> //... similar for LDC
>
> static if (compiler_DigitalMars || compiler_LDC)
> {
>    ...
> } else {
>    ...
> }
Yeah, I mean ||. Your solution works, thanks a lot!

version(DigitalMars) version = DMDAsm;
version(LDC) version = DMDAsm;

version(DMDAsm) asm {
  //dmd/ldc asm here
}
version(GDC) asm {
  //gdc asm here
}


http://dlang.org/version.html#VersionSpecification