compiling Windows programs to run 64 bits

farmer · December 5th, 2010, 6:55 pm

I have a 32-bit program which runs just fine on 64-bit Windows 7. So they must have a bunch of 32-bit dll's in there or something?Is there any way I can get it to run - including static lib and .a files in the compile - on 64-bit XP? Will I have to recompile all the lib files? Like libpthreadGC2.a?

renorm · December 5th, 2010, 7:08 pm

You need to recompile all binaries.

farmer · December 5th, 2010, 8:32 pm

Why does it run on Windows 7 64 bit?

renorm · December 5th, 2010, 9:29 pm

It runs in 32 bit mode. Win 64 comes with 32 bit versions of DLLs, including C-runtime.

farmer · December 5th, 2010, 11:45 pm

QuoteOriginally posted by: renormWin 64 comes with 32 bit versions of DLLs, including C-runtime.Just Windows 7 or Vista and XP also?

Hansi · December 6th, 2010, 12:23 am

QuoteOriginally posted by: farmerQuoteOriginally posted by: renormWin 64 comes with 32 bit versions of DLLs, including C-runtime.Just Windows 7 or Vista and XP also?They do have compatibility mode too but it's not as complete and very unstable.

CurtHagenlocher · December 6th, 2010, 7:57 pm

All 64-bit versions of Windows -- XP, Vista and Win7 -- effectively ship with both the 32-bit and 64-bit versions of the user-mode Windows DLLs. I used 64-bit Windows XP for well over a year and never had any trouble running 32-bit software which ran successfully on 32-bit XP.

farmer · December 7th, 2010, 3:11 pm

Argh. You think it would help if I bought book that explains what bits are? Maybe I should just hire someone else to do this. My program opens up a window when Windows starts, which shows the name of the user who is signed in. Is there somewhere I can buy a program that does something like that? Our company budget to get this working is $2500.

dd3 · December 11th, 2010, 3:26 pm

echo %USERNAME%cheque's in the post, ya?