adds extern "C" to the header files that were missing it. (#5857)

scripts/style_api_gen.py

@@ -631,6 +631,11 @@ print(HEADING)
 print('#ifndef LV_OBJ_STYLE_GEN_H')
 print('#define LV_OBJ_STYLE_GEN_H')
 print()
+print('''\
+#ifdef __cplusplus
+extern "C" {
+#endif
+''')
 print("#include \"../misc/lv_area.h\"")
 print("#include \"../misc/lv_style.h\"")
 print("#include \"../core/lv_obj_style.h\"")
@@ -648,6 +653,12 @@ for p in props:
 guard_close()
 
 print()
+print('''\
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+''')
+
 print('#endif /* LV_OBJ_STYLE_GEN_H */')
 
 sys.stdout = open(base_dir + '/../src/core/lv_obj_style_gen.c', 'w')
@@ -678,6 +689,11 @@ print(HEADING)
 print('#ifndef LV_STYLE_GEN_H')
 print('#define LV_STYLE_GEN_H')
 print()
+print('''\
+#ifdef __cplusplus
+extern "C" {
+#endif
+''')
 
 for p in props:
   guard_proc(p)
@@ -690,6 +706,11 @@ for p in props:
 guard_close()
 
 print()
+print('''\
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+''')
 print('#endif /* LV_STYLE_GEN_H */')
 
 sys.stdout = open(base_dir + '/../docs/overview/style-props.rst', 'w')

src/core/lv_obj_style_gen.c

@@ -690,8 +690,7 @@ void lv_obj_set_style_opa_layered(lv_obj_t * obj, lv_opa_t value, lv_style_selec
     lv_obj_set_local_style_prop(obj, LV_STYLE_OPA_LAYERED, v, selector);
 }
 
-void lv_obj_set_style_color_filter_dsc(lv_obj_t * obj, const lv_color_filter_dsc_t * value,
-                                       lv_style_selector_t selector)
+void lv_obj_set_style_color_filter_dsc(lv_obj_t * obj, const lv_color_filter_dsc_t * value, lv_style_selector_t selector)
 {
     lv_style_value_t v = {
         .ptr = value

src/core/lv_obj_style_gen.h

@@ -10,6 +10,10 @@
 #ifndef LV_OBJ_STYLE_GEN_H
 #define LV_OBJ_STYLE_GEN_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "../misc/lv_area.h"
 #include "../misc/lv_style.h"
 #include "../core/lv_obj_style.h"
@@ -226,8 +230,7 @@ static inline lv_color_t lv_obj_get_style_bg_grad_color(const lv_obj_t * obj, ui
 
 static inline lv_color_t lv_obj_get_style_bg_grad_color_filtered(const lv_obj_t * obj, uint32_t part)
 {
-    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part,
-                                                                                           LV_STYLE_BG_GRAD_COLOR));
+    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part, LV_STYLE_BG_GRAD_COLOR));
     return v.color;
 }
 
@@ -287,8 +290,7 @@ static inline lv_color_t lv_obj_get_style_bg_image_recolor(const lv_obj_t * obj,
 
 static inline lv_color_t lv_obj_get_style_bg_image_recolor_filtered(const lv_obj_t * obj, uint32_t part)
 {
-    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part,
-                                                                                           LV_STYLE_BG_IMAGE_RECOLOR));
+    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part, LV_STYLE_BG_IMAGE_RECOLOR));
     return v.color;
 }
 
@@ -312,8 +314,7 @@ static inline lv_color_t lv_obj_get_style_border_color(const lv_obj_t * obj, uin
 
 static inline lv_color_t lv_obj_get_style_border_color_filtered(const lv_obj_t * obj, uint32_t part)
 {
-    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part,
-                                                                                           LV_STYLE_BORDER_COLOR));
+    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part, LV_STYLE_BORDER_COLOR));
     return v.color;
 }
 
@@ -355,8 +356,7 @@ static inline lv_color_t lv_obj_get_style_outline_color(const lv_obj_t * obj, ui
 
 static inline lv_color_t lv_obj_get_style_outline_color_filtered(const lv_obj_t * obj, uint32_t part)
 {
-    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part,
-                                                                                           LV_STYLE_OUTLINE_COLOR));
+    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part, LV_STYLE_OUTLINE_COLOR));
     return v.color;
 }
 
@@ -404,8 +404,7 @@ static inline lv_color_t lv_obj_get_style_shadow_color(const lv_obj_t * obj, uin
 
 static inline lv_color_t lv_obj_get_style_shadow_color_filtered(const lv_obj_t * obj, uint32_t part)
 {
-    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part,
-                                                                                           LV_STYLE_SHADOW_COLOR));
+    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part, LV_STYLE_SHADOW_COLOR));
     return v.color;
 }
 
@@ -429,8 +428,7 @@ static inline lv_color_t lv_obj_get_style_image_recolor(const lv_obj_t * obj, ui
 
 static inline lv_color_t lv_obj_get_style_image_recolor_filtered(const lv_obj_t * obj, uint32_t part)
 {
-    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part,
-                                                                                           LV_STYLE_IMAGE_RECOLOR));
+    lv_style_value_t v = _lv_obj_style_apply_color_filter(obj, part, lv_obj_get_style_prop(obj, part, LV_STYLE_IMAGE_RECOLOR));
     return v.color;
 }
 
@@ -825,8 +823,7 @@ void lv_obj_set_style_radius(lv_obj_t * obj, int32_t value, lv_style_selector_t
 void lv_obj_set_style_clip_corner(lv_obj_t * obj, bool value, lv_style_selector_t selector);
 void lv_obj_set_style_opa(lv_obj_t * obj, lv_opa_t value, lv_style_selector_t selector);
 void lv_obj_set_style_opa_layered(lv_obj_t * obj, lv_opa_t value, lv_style_selector_t selector);
-void lv_obj_set_style_color_filter_dsc(lv_obj_t * obj, const lv_color_filter_dsc_t * value,
-                                       lv_style_selector_t selector);
+void lv_obj_set_style_color_filter_dsc(lv_obj_t * obj, const lv_color_filter_dsc_t * value, lv_style_selector_t selector);
 void lv_obj_set_style_color_filter_opa(lv_obj_t * obj, lv_opa_t value, lv_style_selector_t selector);
 void lv_obj_set_style_anim(lv_obj_t * obj, const lv_anim_t * value, lv_style_selector_t selector);
 void lv_obj_set_style_anim_duration(lv_obj_t * obj, uint32_t value, lv_style_selector_t selector);
@@ -857,4 +854,8 @@ void lv_obj_set_style_bitmap_mask_src(lv_obj_t * obj, const lv_image_dsc_t * val
 #endif /*LV_USE_GRID*/
 
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* LV_OBJ_STYLE_GEN_H */

src/libs/gif/gifdec.h

@@ -1,6 +1,10 @@
 #ifndef GIFDEC_H
 #define GIFDEC_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include "../../misc/lv_fs.h"
 
@@ -60,4 +64,8 @@ void gd_close_gif(gd_GIF * gif);
 
 #endif /*LV_USE_GIF*/
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* GIFDEC_H */

src/libs/lodepng/lodepng.h

@@ -26,6 +26,10 @@ freely, subject to the following restrictions:
 #ifndef LODEPNG_H
 #define LODEPNG_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <string.h> /*for size_t*/
 
 #include "../../../lvgl.h"
@@ -1092,6 +1096,10 @@ TODO:
 
 #endif /*LV_USE_LODEPNG*/
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /*LODEPNG_H inclusion guard*/
 
 /*

src/misc/lv_style_gen.h

@@ -10,6 +10,10 @@
 #ifndef LV_STYLE_GEN_H
 #define LV_STYLE_GEN_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void lv_style_set_width(lv_style_t * style, int32_t value);
 LV_ATTRIBUTE_EXTERN_DATA extern const lv_style_prop_t _lv_style_const_prop_id_WIDTH;
 void lv_style_set_min_width(lv_style_t * style, int32_t value);
@@ -786,4 +790,8 @@ LV_ATTRIBUTE_EXTERN_DATA extern const lv_style_prop_t _lv_style_const_prop_id_BI
 #endif /*LV_USE_GRID*/
 
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* LV_STYLE_GEN_H */