JackN
21st October 2010 15:09 UTC

How can an NSIS installer script discover if the windows OS is 32 or 64 bits?
I need to be able to provide either the 32 or 64 bit version of jspWin.dll with some .jar files based on the windows OS.
The windows batch method is:

Set RegQry=HKLM\Hardware\Description\System\CentralProcessor\0 
REG.exe Query %RegQry% > checkOS.txt
Find /i "x86" < CheckOS.txt > StringCheck.txt
If %ERRORLEVEL% == 0 (
    Echo "This is 32 Bit Operating system"
) ELSE (
    Echo "This is 64 Bit Operating System"
)

Anders
21st October 2010 15:26 UTC

!include "x64.nsh"

MSG
21st October 2010 16:12 UTC

...and a simple forum search would have told you that, too.

Majek
24th October 2010 03:43 UTC

!include "x64.nsh"

use the ${If} ${RunningX64} to check for x86 or x64.