CMakeList build system question

[adesandr]

Hello,

Dev env : Linux Ubuntu 18.04

My project is structured like this :

Code: [Select all] [Expand/Collapse]

1. My_project :
2.     subproject 1
3.         main
4.             main.c
5.             file1.c
6.             CMakeList.txt
7.         CMakeList.txt
8.            
9.     subproject 2
10.         main
11.             main.c
12.             file 2.c
13.             CMakeList.txt
14.         CMakeList.txt
15.  
16.     extra_component
17.         Component1
18.             file3.c
19.             filee3.h
20.             CMakeList.txt
21.         Component2
22.             file4.c
23.             file4.h
24.             CmakeList.txt

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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 :

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1. cmake_minimum_required(VERSION 3.5)
2. set(PROJECT_VER "1.0.2")
3. set(EXTRA_COMPONENT_DIRS "${PROJECT_DIR}/../extra_components")
4. include($ENV{IDF_PATH}/tools/cmake/project.cmake)
5. project(esp-mad-server)  

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

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1. idf_component_register(SRCS "main.c" "file1.c"
2.                REQUIRES Component1 Component2)

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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.

[adesandr]

Hello,

Env Dev : Linux Ubuntu 18.04 /ESP-IDF 4.00

My_project is structured as follow :

Code: [Select all] [Expand/Collapse]

1. - My_Project/
2.     - CMakeList.txt
3.     - main/
4.             - file1.c
5.             - file1.h
6.             - CMakeList.txt
7. - extra_components/
8.     - component1/
9.         - file2.c
10.         - file2.h
11.         - CMakeList.txt
12.     - component2/
13.         - file3.c
14.         - file3.h
15.         - CMakeList.txt

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My_Project/CMakeList.txt is as follow :

Code: [Select all] [Expand/Collapse]

1.     # The following lines of boilerplate have to be in your project's
2. # CMakeLists in this exact order for cmake to work correctly
3. cmake_minimum_required(VERSION 3.5)
4.  
5. # Project version
6. set(PROJECT_VER "1.0.2")
7.  
8. # Additional directorie to search for components
9. set(EXTRA_COMPONENT_DIRS "${PROJECT_DIR}/../extra_components")
10.  
11. include($ENV{IDF_PATH}/tools/cmake/project.cmake)
12.  
13. project(My_Project)

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My_Project/main/CMakeList.txt is as follow

Code: [Select all] [Expand/Collapse]

1. idf_component_register(SRCS "file1.c"
2.                                         INCLUDE_DIRS " ")

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

Code: [Select all] [Expand/Collapse]

1. idf_component_register(SRCS "file2.c"
2.                     INCLUDE_DIRS "")

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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: [Select all] [Expand/Collapse]

1. - My_Project/
2.     - CMakeList.txt
3.     - main/
4.         - file1.c
5.         - file1.h
6.         - CMakeList.txt
7.     - components/
8.         - component1/
9.             - file2.c
10.             - file2.h
11.             - CMakeList.txt
12.         - component2/
13.             - file3.c
14.             - file3.h
15.             - CMakeList.txt

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The build is working properly.

Thank you in advance for your help.

Regards.

[ESP_Angus]

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

[adesandr]

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.