What are CMake variables and how do I use them?

What are CMake variables and how do I use them?

CMake variables are used to store values that can be referenced throughout your CMake scripts. You can define them using the set() command.

Can you give me an example of defining a variable?

Sure! You can define a variable like this: set(MY_VARIABLE "Hello, World!"). Then, you can use it later in your script.

How do I access the value of a variable?

You can access the value of a variable by using ${VARIABLE_NAME} syntax. For example, ${MY_VARIABLE} will output "Hello, World!".

Are there different types of variables in CMake?

Yes, CMake supports different types of variables, including cache variables, environment variables, and normal variables, each with specific scopes and uses.