Hi everyone,

I am currently working on the Zephyr OS with a FDRM_K64f board from NXP.

I want to create my own application using cmake as recommended by the documentation.

However I don’t want to put everything in one CMakeLists.txt. I want to break down my project into libraries (multiple CMakeLists.txt).

Do you know if there is any documentation talking about that?

My top CMakeLists looks like that:

cmake_minimum_required(VERSION 3.8.2)

include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)

project(NONE)

add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/DataLinkLayer

${CMAKE_CURRENT_SOURCE_DIR}/build/${BOARD}/DataLinkLayer)

target_sources(app PRIVATE src/main.c)

target_link_libraries(app

PRIVATE DL

)

And my second CMakeLists (under the folder DataLinkLayer) looks like that:

include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src)

add_library(DL src/DataLinkInterface.c)

target_include_directories(DL

INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/Interface)

The issue is I can include the boilerplate.cmake in only one CMakeLists.txt otherwise It’s not working, But, the second CmakeLists doesn’t know the zephyr library..

I tried to add: include_directories(/home/user/zephyr/include) in the second CMakeLists but it is not enough. Do you know what should I do?

Thank you,