ESP32 Forum

Posted: **Thu Apr 30, 2020 8:37 pm**

Hello,

Dev env : Linux Ubuntu 18.04

My project is structured like this :

Code: Untitled.cmake Select all

My_project :

	subproject 1

		main

			main.c

			file1.c

			CMakeList.txt 

		CMakeList.txt

			

	subproject 2

		main

			main.c

			file 2.c

			CMakeList.txt

		CMakeList.txt



	extra_component

		Component1

			file3.c

			filee3.h

			CMakeList.txt

		Component2

			file4.c

			file4.h

			CmakeList.txt

Both subproject (1&2) used the components inside the extra_components directories.

I used this scheme because my project need to build two different .bin to dowload two different board.

The Subproject CmainList is as follow :

Code: Untitled.cmake Select all

cmake_minimum_required(VERSION 3.5)

set(PROJECT_VER "1.0.2")

set(EXTRA_COMPONENT_DIRS "${PROJECT_DIR}/../extra_components")

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

project(esp-mad-server)

The CmainList for the main component of the subproject is as follow :

Code: Untitled.cmake Select all

idf_component_register(SRCS "main.c" "file1.c"

			   REQUIRES Component1 Component2)

When i try to build one subproject, Cmake failed with the following error :

CMake Error at /home/adesandr/esp-idf/tools/cmake/build.cmake:185 (message):
Failed to resolve component ‘Component1'.

I can’t understand that is wrong in my setup.

Thank you in advance for your help.

Regards.

Posted: **Fri May 01, 2020 1:01 pm**

Hello,

Env Dev : Linux Ubuntu 18.04 /ESP-IDF 4.00

My_project is structured as follow :

Code: Untitled.cmake Select all

- My_Project/

	- CMakeList.txt

	- main/

        	- file1.c

        	- file1.h

        	- CMakeList.txt

- extra_components/

	- component1/

		- file2.c

		- file2.h

		- CMakeList.txt

	- component2/

		- file3.c

		- file3.h

		- CMakeList.txt

My_Project/CMakeList.txt is as follow :

Code: Untitled.cmake Select all

	# The following lines of boilerplate have to be in your project's

# CMakeLists in this exact order for cmake to work correctly

cmake_minimum_required(VERSION 3.5)



# Project version

set(PROJECT_VER "1.0.2")



# Additional directorie to search for components

set(EXTRA_COMPONENT_DIRS "${PROJECT_DIR}/../extra_components")



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



project(My_Project)

My_Project/main/CMakeList.txt is as follow

Code: Untitled.cmake Select all

idf_component_register(SRCS "file1.c"

                                        INCLUDE_DIRS " ")

/extra_components/component1/CMakeList.txt is as follow :

Code: Untitled.cmake Select all

idf_component_register(SRCS "file2.c"

                    INCLUDE_DIRS "")

When i build My_Project, extra_components/component1and extra_component/component2 are not included in the components list, either in the components path ?

It seems that the command set(EXTRA_COMPONENT_DIRS "${PROJECT_DIR}/../extra_components") is not corrected interpreted.

If I change the structure of My_Project like in the ESP32 CMAKE build system documentation :

Code: Untitled.cmake Select all

- My_Project/

	- CMakeList.txt

	- main/

		- file1.c

		- file1.h

		- CMakeList.txt

	- components/

		- component1/

			- file2.c

			- file2.h

			- CMakeList.txt

		- component2/

			- file3.c

			- file3.h

			- CMakeList.txt

The build is working properly.

Thank you in advance for your help.

Regards.

Posted: **Fri May 15, 2020 2:26 am**

Hi adesandr,

Thanks for being patient while someone got back to you.

I think the problem is here:

# Additional directorie to search for components
set(EXTRA_COMPONENT_DIRS "${PROJECT_DIR}/../extra_components")

The PROJECT_DIR is not set as a variable in this file, it's only set as a build property (see API for getting build properties.)

If you look closely at the build output log, there should be some error about failing to find directory "/../extra_components".

Suggest the following should work:

Code: Select all

# Additional directory to search for components
set(EXTRA_COMPONENT_DIRS "${CMAKE_SOURCE_DIR}/../extra_components")

Angus

Posted: **Sun May 31, 2020 6:08 pm**

Hello,

Thank you very much ESP_Angus, it was the problem.
It's very curious because it works under windows (${PROJECT_DIR}, but not under Linux. Maybe under windows PROJECT_DIR is set in the PATH, i will check.

Problem solved

Regards.

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