Post by @mcc@mastodon.social

CMake question.

For years, I've been adding this line to my cmake configuration invokes on Windows.

-A x64

I do this because I believe this is the only way to communicate to Windows CMake I want to build an x86-64 executable and NOT x86-32.

My wife tried to use one of my invocations on her machine. It angrily refused to run, saying I requested "platform specification" and "ninja" does not support "platform specification".

Is there a correct cross-generator way to say "64 BIT" on Windows?

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Kenneth Rapp

@krapp@krapp.masto.host 20 min. ago

@mcc I have CMake build for Visual Studio and in the project set it to compile x64. That may or may not be useful to you.

mcc

@mcc@mastodon.social 16 min. ago

@krapp You mean, you go into the Visual Studio GUI and do this?

Kenneth Rapp

@krapp@krapp.masto.host 11 min. ago

@mcc Yes, I use CMake to build a Visual Studio project, then work inside Visual Studio from then on. Export config is just a dropdown menu at the top of the editor.

mcc

@mcc@mastodon.social 10 min. ago

@krapp Thanks.

Charlie

@sabena@mastodon.social 25 min. ago

@mcc no, ninja will just detect what compiler toolchain you have. Cmake profiles have at least a way to communicate to the invoking tool what it wants but it’s cursed (the “strategy” part of the toolchain “architecture” key

mcc

@mcc@mastodon.social 16 min. ago

@sabena I would expect I am using Microsoft Visual Studio, which contains both a 32 bit and 64 bit toolchain.

mcc

@mcc@mastodon.social 15 min. ago

@sabena Also I should clarify that we are not using "Ninja", were not aware that "Ninja" was installed, and on checking our CMake generators, it claims Visual Studio is our generator.

mcc

@mcc@mastodon.social 10 min. ago

@sabena So the error was confusing to us on multiple levels.

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