cmake: sysbuild: build harness apps with app list in SB_CONFIG_HARNESS_APPS

add on kconfig option, SB_CONFIG_HARNESS_APPS for sysbuild
to config harness app list,
iterate each harness app to build with ExternalZephyrProject_Add

Signed-off-by: Jingsai Lu <[email protected]>

Author: JingsaiLu

share/sysbuild/images/CMakeLists.txt

@@ -35,3 +35,22 @@ set(SYSBUILD_CURRENT_CMAKE_DIR)
 # This allows for board and SoC specific images to be included.
 sysbuild_add_subdirectory(boards)
 sysbuild_add_subdirectory(soc)
+
+# parse harness app list from SB_CONFIG_HARNESS_APPS and 
+# add these app projects into sysbuild system.
+if(SB_CONFIG_HARNESS_APPS)
+  string(REPLACE "," ";" items "${SB_CONFIG_HARNESS_APPS}")
+  message("SB_CONFIG_HARNESS_APPS: ${SB_CONFIG_HARNESS_APPS}")
+  message("items: ${items}")
+
+  foreach(item IN LISTS items)
+    message("item: ${item}")
+    string(REPLACE "/" "_" app_name ${item})
+    message("app_name: ${app_name}")
+    ExternalZephyrProject_Add(
+        APPLICATION ${app_name}
+        SOURCE_DIR ${ZEPHYR_BASE}/${item}
+        BOARD ${BOARD}
+      )
+  endforeach()
+endif()

share/sysbuild/images/Kconfig

@@ -3,3 +3,9 @@
 # SPDX-License-Identifier: Apache-2.0
 
 rsource "bootloader/Kconfig"
+
+
+config HARNESS_APPS
+	string "List of harness apps"
+	help
+	  List of harness apps to be built.