Re: build C++ COM for 64-bit platform

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Thanks Ben,


Good to learn from you again!


regards,
George

"Ben Voigt [C++ MVP]" wrote:


"George" <George@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:A4104A61-1FC5-4216-8EC4-38CDDFA974B3@xxxxxxxxxxxxxxxx
Thanks Willy,


Your reply is very helpful. I want to check that when people mentioned
*x86*
it seems that it is for 32-bit only, and there is no x86-64bit, right?

And also when people mentioned *x64* it seems that it is for 64-bit only,
and there is no x64-32bit, right?

There are several names used interchangably (the minor differences aren't
important for user-mode Windows programs):

32-bit: x86, i386, i486, i586, i686
64-bit: AMD64, EM64T, x64, x86_64 <- this last one is potentially confusing



regards,
George

"Willy Denoyette [MVP]" wrote:

"George" <George@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:0FA962E2-D310-49B1-BDF4-A72445864D62@xxxxxxxxxxxxxxxx
Hi Willy,


I have tried dumpbin. Here is result,

Do you mean this line indicate it is 32-bit? I do not have a 64-bit DLL
at
hand so I do not know what is the output for 64-bit DLL,

32 bit word machine

here is the total output

14C machine (x86)
3 number of sections
471755F1 time date stamp Thu Oct 18 20:47:45 2007
0 file pointer to symbol table
0 number of symbols
E0 size of optional header
210E characteristics
Executable
Line numbers stripped
Symbols stripped
32 bit word machine
DLL



This is a native 32bit module, as indicated by :
14C machine (x86)

A 64bit module includes this:
8664 machine (x64)

in the header.

Willy.





.

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