Working with CMake

Hello Everyone, glad to be back again!

In my previous story, I tried to give you some hints about the fundamental functionalities of CMake. Since there’s no ending to learning, let’s move ahead.

Now in a project you have files distributed in different directories. Let’s take the example of header files while building a library with them. Header files are generally provided inside an include directory. The compiler is not really aware of how you actually define your project’s structure. While building your library, you’d be required to specify your defined header files it depends on. In such a case, we do something as ‘gcc -c test.cpp -Iinclude’. This specifies the compiler to look for the header files inside the include directory. To do the same with CMake, we do

To set a variable in CMake, we use the set command, set(var-name var-value).

REQUIRED: Just in case if the package is not found, CMake generates an error. To shut this error generation, you can replace REQUIRED with the QUIET argument.

SystemC is the namespace provided here so as to get an idea that the target being used is imported and out of its original scope, systemc is the target that was actually created by the systemc package during its own build.

We’ll have to wrap up here since next we’ll be focusing on install and exports where we can get a clear idea about the config and target files generation and consumption.

This is your Author Kunal Sharma, until then stay foolish and scratch that head!

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