How to Add a Custom Library to Buildroot in Luckfox Pico SDK

[parth-6]

Hi everyone,

I'm very new to embedded Linux and just started working with the Luckfox Pico board. I’ve been following the SDK and Buildroot setup, and it’s been great so far — thank you to the developers for this project!

Now, I’m trying to do something that I’m not sure how to approach:
I want to add my own simple C library (some .c and .h files) to the system so it gets compiled and included in the final firmware.

What I'm Trying to Do:
I wrote a small custom library called libmysensor, and the folder looks like this:
libmysensor/
├── libmysensor.c
├── libmysensor.h
└── Makefile
I want this library to be:
Compiled automatically when I build the project
Included in the root filesystem
Available for other programs on the board to use

What I Know So Far:
I saw that Buildroot can be used to add packages.
I read a bit about creating a folder in buildroot/package/ and adding Config.in and .mk files.
I also found the make menuconfig command to enable packages.

But honestly, I don’t fully understand how Buildroot works yet, or what’s the right way to "install" a custom library like mine.

Can Someone Please Guide Me?
I’d really appreciate help with:
What steps should I follow (in beginner language) to add my library?
Where should I put my library code?
How do I tell Buildroot to compile and install it?
How can I check if it's available on the final system after flashing?

I’m using this repo:
https://github.com/LuckfoxTECH/luckfox-pico

Thank you so much in advance!
I’m eager to learn and would love any beginner-friendly tips, examples, or documentation you could share.

Best,
Parth Dhoble

[luckfox-eng33]

This question is more about buildroot. If you add packages to buildroot, I think you should read the buildroot documentation （customize-packages）

But I think there is a more convenient way to solve your problem. If you can read shell scripts and makefiles, you can refer to the Add custom program in media/luckfox