cmake: Do initial network configuration if enabled

If CONFIG_NET_CONFIG_SETTINGS is enabled, then the network
configuration library will check if a yaml file network-config.yaml
is found in the application directory and use it to generate
network initial configuration that is then applied when the device
boots. If the yaml file is not there, then the relevant Kconfig options
are used to create initial network configuration.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

cmake/modules/kernel.cmake

@@ -256,3 +256,14 @@ if("${CMAKE_EXTRA_GENERATOR}" STREQUAL "Eclipse CDT4")
   include(${ZEPHYR_BASE}/cmake/ide/eclipse_cdt4_generator_amendment.cmake)
   eclipse_cdt4_generator_amendment(1)
 endif()
+
+if(CONFIG_NET_CONFIG_SETTINGS)
+  # If network configuration library is enabled, check if the yaml file
+  # is present and use it to generate an initial configuration. Otherwise
+  # use the .config file to generate the initial configuration.
+  if(EXISTS ${APPLICATION_SOURCE_DIR}/network-config.yaml)
+    network_generate_config_file_for_target(app ${APPLICATION_SOURCE_DIR}/network-config.yaml)
+  else()
+    network_generate_config_file_for_target(app ${DOTCONFIG})
+  endif()
+endif()