When using Win32/x86 in a version block is that the compiler or OS?

[Jacob Carlborg]

On 2014-01-12 19:47, Gary Willoughby wrote:
> When using Win32/x86 in a version block, does that relate to the
> compiler or OS?
>
> for example:
>
> version(Win32)
> {
>      // 32bit Windows or 32bit Compiler?
> }

Microsoft 32-bit Windows systems

> version(X86)
> {
>      // 32bit OS or 32bit Compiler?
> }

Intel and AMD 32-bit processors

> If these don't relate to the compiler is there any indication that the
> program is being compiled with a 32bit compiler?

You might want to use: D_LP64 - Pointers are 64 bits (command line 
switch -m64). (Do not confuse this with C's LP64 model)

I don't think what you're asking for is useful. The 32bit compiler can 
compile both 32bit and 64bit code, at least DMD.

> I'm primarily asking because i need to use this to constrain dub to
> build different things depending on what compiler is used and on what
> architecture.

DigitalMars - DMD
GNU - GDC
LDC - LDC
SDC - SDC

A complete list of predefined versions can be found here:

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

-- 
/Jacob Carlborg