[CMake] How to invoke 64 bit cmd.exe from cmake script onWindows 7 (x64).

[Eric Noulard]

2010/8/23 Alexander Tarnopolsky <Alexander.Tarnopolsky at pdgm.com>:
> Thanks for prompt reply.
>
> In a simple case I invoke just interactive shell using full path to
> 64bit cmd.exe :
>
> file (TO_NATIVE_PATH "$ENV{COMSPEC}" SHELL)
> SET (ARGS /k)
> execute_process (COMMAND ${SHELL} ${ARGS})
>
> Still I see that the cmd process running as 32bit (in TaskManager).

I'm not a windows expert but since execute_process somehow
Fork/CreateThread/CreateProcess from 32 bits CMake I doubt
that this 32bits app may fork a 64bits one.

The converse should be possible because of WoW64 thing
http://en.wikipedia.org/wiki/WoW64.

May be you can try to:

1) open a 32 bits command shell
2) try to open a 64 bits command shell from the first one and see what happen

-- 
Erk
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