add some code

managed_components/lvgl__lvgl/env_support/cmake/kconfig.cmake

@@ -0,0 +1,57 @@
+set(PROJECT_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
+set(KCONFIG_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/Kconfig)
+set(AUTOCONF_H ${CMAKE_CURRENT_BINARY_DIR}/autoconf.h)
+set(OUTPUT_DOTCONFIG ${CMAKE_CURRENT_SOURCE_DIR}/.config)
+set(KCONFIG_LIST_OUT ${CMAKE_CURRENT_BINARY_DIR}/kconfig_list)
+set(AUTO_CONF_DIR ${CMAKE_CURRENT_BINARY_DIR})
+
+# Check if the user wants to use a defconfig, using the -DLV_BUILD_DEFCONFIG_PATH option
+if(LV_BUILD_DEFCONFIG_PATH)
+    # The supplied path can be relative - normalize it to absolute
+    message(STATUS "Using defconfig: ${LV_BUILD_DEFCONFIG_PATH}")
+
+    if (NOT IS_ABSOLUTE ${CONF_PATH})
+        file(REAL_PATH ${LV_BUILD_DEFCONFIG_PATH}
+            DOTCONFIG BASE_DIRECTORY ${CMAKE_SOURCE_DIR})
+        message(STATUS "Converted to absolute path: ${DOTCONFIG}")
+
+    else()
+        set(DOTCONFIG ${LV_BUILD_DEFCONFIG_PATH})
+    endif()
+
+else()
+    # Fallback - This will attempt to use a .config file inside of the LVGL directory
+    set(DOTCONFIG ${CMAKE_CURRENT_SOURCE_DIR}/.config)
+
+endif()
+
+if (NOT EXISTS ${DOTCONFIG})
+    message(FATAL_ERROR "defconfig: ${DOTCONFIG} - does not exist")
+endif()
+
+execute_process(
+    COMMAND ${Python_EXECUTABLE}
+    ${LVGL_ROOT_DIR}/scripts/kconfig.py
+    ${LVGL_ROOT_DIR}/Kconfig
+    ${OUTPUT_DOTCONFIG}
+    ${AUTOCONF_H}
+    ${KCONFIG_LIST_OUT}
+    ${DOTCONFIG}
+    WORKING_DIRECTORY ${LVGL_ROOT_DIR}
+    # The working directory is set to the app dir such that the user
+    # can use relative paths in CONF_FILE, e.g. CONF_FILE=nrf5.conf
+    RESULT_VARIABLE ret
+    )
+if(NOT "${ret}" STREQUAL "0")
+    message(FATAL_ERROR "command failed with return code: ${ret}")
+endif()
+
+# Re-configure (Re-execute all CMakeLists.txt code) when autoconf.h changes
+set_target_properties(lvgl PROPERTIES CMAKE_CONFIGURE_DEPENDS ${AUTOCONF_H})
+
+# Set the variable that can be used by the CMakeLists.txt including this file
+set(KCONFIG_EXTERNAL_INCLUDE ${AUTOCONF_H})
+
+# Ensure LV_BUILD_DEFCONFIG_PATH is not set in the path, to be able to call it without
+# the -DLV_BUILD_DEFCONFIG_PATH after the first configuration, and to work with the .config
+unset(LV_BUILD_DEFCONFIG_PATH CACHE)