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CMake: How to specify target platform?

Tags:

c++

cmake

How to specify target platform for CMake? For instance x86, x64, amd64. I've tried set TARGET_CPU=x64 but not sure does it works or not.

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Viktor Avatar asked Jul 20 '17 23:07

Viktor

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What is a target in CMake?

A CMake-based buildsystem is organized as a set of high-level logical targets. Each target corresponds to an executable or library, or is a custom target containing custom commands.

How do I choose a CMake generator?

Use its -G option to specify the generator for a new build tree. The cmake-gui(1) offers interactive selection of a generator when creating a new build tree.

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2 Answers

When calling the cmake command you can define a generator for instance Visual Studio 14 2015 Win64 which results in the target platform x64

cmake -G"Visual Studio 14 2015 Win64" -H%SOURCE_ROOT_DIR% -BC:\build\vs2015\x64\MyProject

If you like to build for x86 on Windows with VS2015 - you would go this way:

cmake -G"Visual Studio 14 2015" -H%SOURCE_ROOT_DIR% -BC:\build\vs2015\x64\MyProject

ARM:

cmake -G"Visual Studio 14 2015 ARM" -H%SOURCE_ROOT_DIR% -BC:\build\vs2015\x64\MyProject

Depending on your problem maybe a CMake toolchain file can help you.

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Vertexwahn Avatar answered Oct 12 '22 02:10

Vertexwahn

A little update for Cmake 3.17 and Visual Studio 2019.

In this case, even if you specify genertator with -G, you have to use -A option with either Win32 or Win64.

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Feldmarshall Avatar answered Oct 12 '22 02:10

Feldmarshall
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