Custom component library

[leonardo]

Hi all,
I'm trying to be familiar with ESP32. I'm following the program guide and I read the build system guide but I'm not able to understand how I can create a reusable components library between more than one project and I need some help....
I try to explain better what I did:
I created an easy project with main.c and I created under a completely different directory a commoncomponents folder.
Inside commoncomponents I created mycomponent where I put mycomponent.c and mycomponent.h. I also add CMakeLists.txt containing

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idf_component_register(SRCS "mycomponent.c"
                       INCLUDE_DIRS ".")

In the CMakeLists.txt file of my project I set those lines:

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cmake_minimum_required(VERSION 3.5)

set(EXTRA_COMPONENT_DIRS "D:/commoncomponents/mycomponent")

include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(app-template)

And in main.c I added the include of mycomponent

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#include "mycomponent.h"

But I always got back an error when I launch idf.py build:

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MakeFiles/__idf_main.dir/main.c.obj   -c ../main/main.c
../main/main.c:2:10: fatal error: mycomponent.h: No such file or directory
 #include "mycomponent.h"

Could you please help me to figure out what's wrong?

Thank you!

[chegewara]

How mycomponent tree looks like? Did you put mycomponent.h in include subfolder?

You also need to add mycomponent to CMakeLists.txt in main folder:
https://github.com/espressif/esp-adf/bl ... sts.txt#L5

[leonardo]

Thank you very much!
It was an error placing the files in the tree. I followed your project and I was able to compile mine correctly.
Thank you again!