fix(extra): add lv_extra.c/h for lv_extra_init()

src/core/lv_obj.c

@@ -22,7 +22,7 @@
 #include "../misc/lv_math.h"
 #include "../misc/lv_log.h"
 #include "../hal/lv_hal.h"
-#include "../extra/layouts/lv_layouts.h"
+#include "../extra/lv_extra.h"
 #include <stdint.h>
 #include <string.h>
 
@@ -156,8 +156,7 @@ void lv_init(void)
     LV_LOG_WARN("Log level is set the Trace which makes LVGL much slower")
 #endif
 
-    lv_grid_init();
-    lv_flex_init();
+    lv_extra_init();
 
     lv_initialized = true;
 

src/extra/lv_extra.c

@@ -0,0 +1,47 @@
+/**
+ * @file lv_extra.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lvgl.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+void lv_extra_init(void)
+{
+#if LV_USE_FLEX
+    lv_flex_init();
+#endif
+
+#if LV_USE_GRID
+    lv_grid_init();
+#endif
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/

src/extra/lv_extra.h

@@ -0,0 +1,42 @@
+/**
+ * @file lv_extra.h
+ *
+ */
+
+#ifndef LV_EXTRA_H
+#define LV_EXTRA_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Initilaize the extra components
+ */
+void lv_extra_init(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_EXTRA_H*/