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

[Alexander Tarnopolsky]

Hi,

I'm trying to invoke an interactive shell from a cmake script using the
following: 

execute_process (COMMAND ${SHELL} ${ARGS})

And the 32bit cmd.exe is invoked on "Windows 7 x64" (since the cmake
itself runs in 32bit environment). 
But I'm interested in 64bit cmd.exe.
Is there a way to invoke it from cmake?

Thanks in advance for your comments.
 
Regards,
Alexander Tarnopolsky 
Build Manager, Epos
 
Alexander.Tarnopolsky at PDGM.com
www.pdgm.com

-----Original Message-----
From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf
Of Arnaud GELAS
Sent: Friday, August 20, 2010 7:19 PM
To: cmake at cmake.org
Subject: [CMake] TRY_COMPILE and -Werror


  Hi all,

I would like to check if one piece of code generates a warning or not 
(about a deprecated method). I want to use TRY_COMPILE and adds -Werror 
to gcc flags.

I have tried the following:

TRY_COMPILE(VTK_FFMPEG_GUESSFORMAT
          ${VTK_BINARY_DIR}/CMakeTmp
          ${VTK_CMAKE_DIR}/vtkFFMPEGTestGuessFormat.cxx
          CMAKE_FLAGS
"-DINCLUDE_DIRECTORIES:STRING=${FFMPEG_INCLUDE_DIR}"
            -DCOMPILE_DEFINITIONS:STRING=-D${VTK_FFMPEG_CDEFS}
            -DCOMPILE_DEFINITIONS:STRING=-D__STDC_CONSTANT_MACROS
           "-DLINK_LIBRARIES:STRING=${FFMPEG_avformat_LIBRARY}"
           "-DCMAKE_CXX_FLAGS:STRING=-Werror"
          OUTPUT_VARIABLE OUTPUT)

But VTK_FFMPEG_GUESSFORMAT is still true...

Any idea?

Thanks,
Arnaud
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