fix(grid,flex): fix compile errors when grid or flex is disabled (#5289)

demos/benchmark/lv_demo_benchmark.c

@@ -18,6 +18,10 @@
     #error "LV_FONT_MONTSERRAT_24 is required for lv_demo_benchmark. Enable it in lv_conf.h."
 #endif
 
+#if LV_USE_DEMO_WIDGETS == 0
+    #error "LV_USE_DEMO_WIDGETS needs to be enabled"
+#endif
+
 #include "../../src/display/lv_display_private.h"
 #include "../../src/core/lv_global.h"
 

demos/multilang/lv_demo_multilang.h

@@ -15,6 +15,16 @@ extern "C" {
  *********************/
 #include "../lv_demos.h"
 
+#if LV_USE_DEMO_MULTILANG
+
+#if LV_USE_GRID == 0
+#error "LV_USE_GRID needs to be enabled"
+#endif
+
+#if LV_USE_FLEX == 0
+#error "LV_USE_FLEX needs to be enabled"
+#endif
+
 /*********************
  *      DEFINES
  *********************/
@@ -32,6 +42,8 @@ void lv_demo_multilang(void);
  *      MACROS
  **********************/
 
+#endif /*LV_USE_DEMO_MULTILANG*/
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif

demos/music/lv_demo_music_main.h

@@ -14,8 +14,13 @@ extern "C" {
  *      INCLUDES
  *********************/
 #include "lv_demo_music.h"
+
 #if LV_USE_DEMO_MUSIC
 
+#if LV_USE_GRID == 0
+#error "LV_USE_GRID needs to be enabled"
+#endif
+
 /*********************
  *      DEFINES
  *********************/

demos/render/lv_demo_render.c

@@ -9,6 +9,7 @@
 #include "lv_demo_render.h"
 
 #if LV_USE_DEMO_RENDER
+
 #include "../../src/display/lv_display_private.h"
 #include "../../src/core/lv_global.h"
 

demos/render/lv_demo_render.h

@@ -17,6 +17,10 @@ extern "C" {
 
 #if LV_USE_DEMO_RENDER
 
+#if LV_USE_GRID == 0
+#error "LV_USE_GRID needs to be enabled"
+#endif
+
 /*********************
  *      DEFINES
  *********************/

demos/transform/lv_demo_transform.c

@@ -10,10 +10,6 @@
 
 #if LV_USE_DEMO_TRANSFORM
 
-#if LV_FONT_MONTSERRAT_18 == 0
-    #error "LV_FONT_MONTSERRAT_18 is required for lv_demo_transform. Enable it in lv_conf.h."
-#endif
-
 /*********************
  *      DEFINES
  *********************/

demos/transform/lv_demo_transform.h

@@ -15,6 +15,16 @@ extern "C" {
  *********************/
 #include "../lv_demos.h"
 
+#if LV_USE_DEMO_TRANSFORM
+
+#if LV_FONT_MONTSERRAT_18 == 0
+#error "LV_FONT_MONTSERRAT_18 is required for lv_demo_transform. Enable it in lv_conf.h."
+#endif
+
+#if LV_USE_GRID == 0
+#error "LV_USE_GRID needs to be enabled"
+#endif
+
 /*********************
  *      DEFINES
  *********************/
@@ -32,6 +42,8 @@ void lv_demo_transform(void);
  *      MACROS
  **********************/
 
+#endif /*LV_USE_DEMO_TRANSFORM*/
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif

demos/widgets/lv_demo_widgets.h

@@ -15,6 +15,16 @@ extern "C" {
  *********************/
 #include "../lv_demos.h"
 
+#if LV_USE_DEMO_WIDGETS
+
+#if LV_USE_GRID == 0
+#error "LV_USE_GRID needs to be enabled"
+#endif
+
+#if LV_USE_FLEX == 0
+#error "LV_USE_FLEX needs to be enabled"
+#endif
+
 /*********************
  *      DEFINES
  *********************/
@@ -33,6 +43,8 @@ void lv_demo_widgets_start_slideshow(void);
  *      MACROS
  **********************/
 
+#endif /*LV_USE_DEMO_WIDGETS*/
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif