Changing project name in CMakeLists does nothing

[Frikkie Badenhorst]

Hi there,

Very simple question as we are new to Zephyr. We currently have a test application running name qpc-zephyr-app (not nordics' example).This is a basic example project and we will be porting our existing application on top of this one. The project can be found in a folder directory named qpc-zephyr-app as well. We want to rename the project to our existing application.

Now, in the CMakeLists.txt file, we noted the following code:

project(qpc-zephyr-app) (this is the same for all nordic examples as well)

However when changing this to for example, project(rename_test), it seems as if nothing happens? Everything still builds fine, and the application name still seems to be the original qpc-zephyr-app:

What does project() then do? Should the project name be the same as the folder directory is stored in?

Is there documentation on what commands can be used in cmakelists.txt?

Regards,

Frikkie

[Sigurd Hellesvik]

Hi,

First, I would like to understand you goal.

We want to rename the project to our existing application.

What exactly do you mean by "rename the project"? (Which outcome are you looking for?)

Regards,
Sigurd Hellesvik

[Frikkie Badenhorst]

Hi,

The goal is to understand what project() in the CMakeLists.txt file does

[Sigurd Hellesvik]

See https://cmake.org/cmake/help/latest/command/project.html.

From what you say, it does not look like this is used in the nRF VS Code extension.

In fact, I suspect it is not used a lot at all, as multiple of our samples just set it to NONE:

[Frikkie Badenhorst]

Thanks Sigurd and apologies for the trivial question.

We are investigating using Zephyr now (we avoided it until now) as it seems we are forced to do so, so the goal at the moment is to try to understand the details of Zephyr/the build system, even though it may sound trivial.

[Sigurd Hellesvik]

No worries. It is good to ask those questions.

In case you have not seen it yet, I recommend https://academy.nordicsemi.com/.

Also, this blog was recently created by someone in Memfault, and it looks at zephyr from a slightly different angle than our docs do, so maybe it can be useful to you as well. (There are of course a lot of zephyr blogs around, but this is the most recent I heard about, so I thought might as well give it)