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CMake Basics for Developers

The document provides an introduction to CMake including installing CMake, running CMake, dos and don'ts, the minimum version requirement, variables and the cache, programming in CMake, project structure, running other programs, adding features like C++11 support, utilities, including other projects, testing with GoogleTest and Catch, and exporting and installing projects.

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upreti2688
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55 views2 pages

CMake Basics for Developers

The document provides an introduction to CMake including installing CMake, running CMake, dos and don'ts, the minimum version requirement, variables and the cache, programming in CMake, project structure, running other programs, adding features like C++11 support, utilities, including other projects, testing with GoogleTest and Catch, and exporting and installing projects.

Uploaded by

upreti2688
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Introduction to the
An Introduction to Modern CMake

Installing CMake
basics
Running CMake

Do's and Don'ts Minimum Version


What's new in CMake
Here's the first line of every CMakeLists.txt ,
Introduction to the Basics
which is the required name of the file CMake looks
Variables and the Cache
for:
Programming in CMake
cmake_minimum_required(VERSION 3.1)
Communicating with your code

How to Structure Your Project


Let's mention a bit of CMake syntax. The command
Running Other Programs
name cmake_minimum_required is case insensitive,
A Simple Example so the common practice is to use lower case. 1
The VERSION is a special keyword for this
Adding Features
function. And the value of the version follows the
C++11 and Beyond
keyword. Like everywhere in this book, just click on
Small but common needs the command name to see the official
documentation, and use the dropdown to switch
Utilities
documentation between CMake versions.
Useful modules
This line is special! 2 The version of CMake will
IDEs
also dictate the policies, which define behavior
Debugging changes. So, if you set minimum_required to
Including Projects VERSION 2.8 , you'll get the wrong linking behavior

on macOS, for example, even in the newest


Submodule
CMake versions. If you set it to 3.3 or less, you'll
DownloadProject get the wrong hidden symbols behaviour, etc. A list
Fetch (CMake 3.11) of policies and versions is available at policies.

Testing Starting in CMake 3.12, this supports a range, such

GoogleTest
as VERSION 3.1...3.15 ; this means you support
as low as 3.1 but have also tested it with the new
Catch
policy settings up to 3.15. This is much nicer on
Exporting and Installing users that need the better settings and due to a

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