build: Do not copy conf generator files to build directory

These files are copied to the build directory but then never used during
the build, instead the command to generate lv_conf.h below uses the
original source files. Skip this unneeded copy.

Instead add these files to CMake's CONFIGURE_DEPENDS so that CMake will
still reconfigure if these source files change.

Signed-off-by: Andrew Davis <afd@ti.com>

Author: glneo

CMakeLists.txt

@@ -65,12 +65,9 @@ set(LV_BUILD_CONF_PATH
 set(LVGL_TEMPLATE_PATH "${CMAKE_SOURCE_DIR}/lvgl/lv_conf_template.h")
 set(GENERATE_SCRIPT_PATH "${CMAKE_SOURCE_DIR}/lvgl/scripts/generate_lv_conf.py")
 
-configure_file(${LVGL_TEMPLATE_PATH} ${CMAKE_BINARY_DIR}/lv_conf_template.h
-               COPYONLY)
-configure_file(${LV_CONF_DEFAULTS_PATH} ${CMAKE_BINARY_DIR}/lv_conf.defaults
-               COPYONLY)
-configure_file(${GENERATE_SCRIPT_PATH} ${CMAKE_BINARY_DIR}/generate_lv_conf.py
-               COPYONLY)
+set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${LVGL_TEMPLATE_PATH})
+set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${LV_CONF_DEFAULTS_PATH})
+set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${GENERATE_SCRIPT_PATH})
 
 execute_process(
   COMMAND