[CMake] Building for 64 bit with Visual Studio 2013

[Nils Gladitz]

On 04.02.2015 20:28, Scott Aron Bloom wrote:
>
> We have been building for 32 bits on windows, and 64 bit on linux and 
> OSX for a while.
>
> In order to enable this, we have a simple function that uses 
> CMAKE_SIZEOF_VOID_P to add a define via add_defintions
>
> However, we are now going to build for windows 64, I calling 
> vsvarsall.bat with x64 as a parameter, however, the 
> CMAKE_SIZEOF_VOID_P still is equal to 4.
>
> Any idea on what Im missing?
>

Are you using a "Visual Studio" generator or a "Makefile" or "Ninja" 
generator?
The visual studio command line environment is only relevant for the later.

For the Visual Studio generators you can append e.g. "Win64" to the 
generator name to get the 64-bit compilers.
e.g. "Visual Studio 12 2013 Win64".

Nils
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