[CMake] How to force use of Windows 64bit link.exe?

[R0b0t1]

On Wednesday, November 8, 2017, Shoaib Meenai <smeenai at fb.com> wrote:
> Running cmake from an x64 developer command prompt and passing -Thost=x64
to cmake should do the trick.
>

Perhaps more advisable is selecting the Visual Studio generator and passing
in the platform at the end: "Visual Studio 15 2017 Win64."

Per
https://cmake.org/cmake/help/v3.10/generator/Visual%20Studio%2015%202017.html
.

It might be wise to make 64 bit the default or at least more prominent. I
had a hard time figuring this out.

Cheers,
    R0b0t1

> On 11/8/17, 2:26 PM, "CMake on behalf of Paul Smith" <
cmake-bounces at cmake.org on behalf of paul at mad-scientist.net> wrote:
>
>     Hi all.  I wonder if someone can help me get CMake to force Visual
>     Studio to run the 64bit linker instead of the 32bit linker.  By that I
>     mean, the link.exe binary built for 64bit, not a linker that produces
a
>     64bit executable.
>
>     Sometimes (but not always) when I link my code I get an error from the
>     32bit link.exe and Visual Studio wants to automatically re-invoke the
>     64bit link.exe.  I would prefer that it just always starts with the
>     64bit version, rather than fail and retry.
>
>     I get errors like:
>
>       LINK : the 32-bit linker
>       (C:\Program Files (x86)\Microsoft Visual Studio
14.0\VC\bin\x86_amd64\link.exe)
>       ran out of heap space; restarting link with the 64-bit linker
>
>     I run CMake with a generator like this:
>
>       cmake.exe -G "Visual Studio 14 2015" -A x64 D:\builds\src
>
>     I want to convince cmake to tell Visual Studio to invoke the 64bit
>     link.exe at first, rather than waiting for a failure--the 64bit
>     link.exe is, I believe:
>
>       C:\Program Files (x86)\Microsoft Visual Studio
14.0\VC\bin\amd64\link.exe
>
>     Does anyone know how to force that to happen?
>
>     BTW, I'm using CMake 3.5.2 at the moment.
>
>     Cheers!
>     --
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