w8jcik commented on a change in pull request #334:
URL: 
https://github.com/apache/incubator-nuttx-apps/pull/334#discussion_r455143417



##########
File path: graphics/lvgl/Makefile
##########
@@ -78,20 +78,21 @@ $(LVGL_UNPACKNAME): $(LVGL_TARBALL)
        $(Q) mv lvgl-$(LVGL_VERSION) $(LVGL_UNPACKNAME)
        $(Q) touch $(LVGL_UNPACKNAME)
 
-lvgl/lvgl.h: $(LVGL_UNPACKNAME)
+$(LVGL_UNPACKNAME)/lvgl.h: $(LVGL_UNPACKNAME)
 
-$(APPDIR)/include/graphics/lvgl.h: lvgl/lvgl.h
-       @echo "CP: lvgl/lvgl.h"
-       $(Q) cp lvgl/lvgl.h $(APPDIR)/include/graphics/lvgl.h
+exports/graphics/lvgl.h: $(LVGL_UNPACKNAME)/lvgl.h
+       $(Q) mkdir -p exports/graphics
+       @echo "CP: $(LVGL_UNPACKNAME)/lvgl.h"
+       $(Q) cp $(LVGL_UNPACKNAME)/lvgl.h exports/graphics/lvgl.h

Review comment:
       Hi @v01d the prefix is already present, because currently LVGL wrapper 
is copying some header to `include/graphics` to be consistent with other NuttX 
apps libraries. Change suggested by @xiaoxiang781216 removes this prefix. I was 
asking should we really remove it, because this way we break compatibility and 
violate consistency. Breaking compatibility is fine for me. But what is the 
official strategy. Do we want `graphics` in front of all LVGL includes? Right 
now it seems to be in front of one of the headers and probably not in front of 
the others. I think it should be still possible to have `#include 
<graphics/lvgl/...>`. The question is do we want it.




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