how to detect OS architecture?

[Marco Leise]

Am Tue, 17 Dec 2013 13:30:25 -0000
schrieb "Regan Heath" <regan at netmail.co.nz>:

> On Mon, 16 Dec 2013 21:27:13 -0000, Hugo Florentino <hugo at acdam.cu> wrote:
> 
> > On Mon, 16 Dec 2013 20:23:00 +0100, Jacob Carlborg wrote:
> >> On 2013-12-16 17:46, Marco Leise wrote:
> >>
> >>> Hehe, I guess the whole purpose of the launcher is to run in
> >>> 32-bit and detect at runtime if the 64-bit main executable can
> >>> be run or the 32-bit version must be used.
> >>
> >> The only advantage of that is that only a 32bit launcher needs to be
> >> distributed. Perhaps that's the whole idea.
> >
> > It is. :)
> 
> "Process Explorer" by sysinternals, now distributed by M$ does something  
> similar.
> http://technet.microsoft.com/en-gb/sysinternals/bb896653.aspx
> 
> It is a 32 bit exe, which detects the OS bit width and if it's 64 bit  
> extracts a 64 exe from within itself to run.  When you quit that 64 bit  
> exe, it deletes the file it extracted from disk.  It's quite a neat  
> solution.
> 
> R
> 

Only if your executable is self-contained. If you already have
external DLLs or assets you can as well have a launcher and 2
actual binaries.

-- 
Marco